2 * Copyright (C) 2009 Nokia Corporation
3 * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
9 * This program is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
14 * You should have received a copy of the GNU General Public License along with
15 * this program. If not, see <http://www.gnu.org/licenses/>.
18 #define DSS_SUBSYS_NAME "DSI"
20 #include <linux/kernel.h>
21 #include <linux/mfd/syscon.h>
22 #include <linux/regmap.h>
24 #include <linux/clk.h>
25 #include <linux/device.h>
26 #include <linux/err.h>
27 #include <linux/interrupt.h>
28 #include <linux/delay.h>
29 #include <linux/mutex.h>
30 #include <linux/module.h>
31 #include <linux/semaphore.h>
32 #include <linux/seq_file.h>
33 #include <linux/platform_device.h>
34 #include <linux/regulator/consumer.h>
35 #include <linux/wait.h>
36 #include <linux/workqueue.h>
37 #include <linux/sched.h>
38 #include <linux/slab.h>
39 #include <linux/debugfs.h>
40 #include <linux/pm_runtime.h>
42 #include <linux/of_graph.h>
43 #include <linux/of_platform.h>
44 #include <linux/component.h>
45 #include <linux/sys_soc.h>
47 #include <video/mipi_display.h>
52 #define DSI_CATCH_MISSING_TE
54 struct dsi_reg { u16 module; u16 idx; };
56 #define DSI_REG(mod, idx) ((const struct dsi_reg) { mod, idx })
58 /* DSI Protocol Engine */
61 #define DSI_PROTO_SZ 0x200
63 #define DSI_REVISION DSI_REG(DSI_PROTO, 0x0000)
64 #define DSI_SYSCONFIG DSI_REG(DSI_PROTO, 0x0010)
65 #define DSI_SYSSTATUS DSI_REG(DSI_PROTO, 0x0014)
66 #define DSI_IRQSTATUS DSI_REG(DSI_PROTO, 0x0018)
67 #define DSI_IRQENABLE DSI_REG(DSI_PROTO, 0x001C)
68 #define DSI_CTRL DSI_REG(DSI_PROTO, 0x0040)
69 #define DSI_GNQ DSI_REG(DSI_PROTO, 0x0044)
70 #define DSI_COMPLEXIO_CFG1 DSI_REG(DSI_PROTO, 0x0048)
71 #define DSI_COMPLEXIO_IRQ_STATUS DSI_REG(DSI_PROTO, 0x004C)
72 #define DSI_COMPLEXIO_IRQ_ENABLE DSI_REG(DSI_PROTO, 0x0050)
73 #define DSI_CLK_CTRL DSI_REG(DSI_PROTO, 0x0054)
74 #define DSI_TIMING1 DSI_REG(DSI_PROTO, 0x0058)
75 #define DSI_TIMING2 DSI_REG(DSI_PROTO, 0x005C)
76 #define DSI_VM_TIMING1 DSI_REG(DSI_PROTO, 0x0060)
77 #define DSI_VM_TIMING2 DSI_REG(DSI_PROTO, 0x0064)
78 #define DSI_VM_TIMING3 DSI_REG(DSI_PROTO, 0x0068)
79 #define DSI_CLK_TIMING DSI_REG(DSI_PROTO, 0x006C)
80 #define DSI_TX_FIFO_VC_SIZE DSI_REG(DSI_PROTO, 0x0070)
81 #define DSI_RX_FIFO_VC_SIZE DSI_REG(DSI_PROTO, 0x0074)
82 #define DSI_COMPLEXIO_CFG2 DSI_REG(DSI_PROTO, 0x0078)
83 #define DSI_RX_FIFO_VC_FULLNESS DSI_REG(DSI_PROTO, 0x007C)
84 #define DSI_VM_TIMING4 DSI_REG(DSI_PROTO, 0x0080)
85 #define DSI_TX_FIFO_VC_EMPTINESS DSI_REG(DSI_PROTO, 0x0084)
86 #define DSI_VM_TIMING5 DSI_REG(DSI_PROTO, 0x0088)
87 #define DSI_VM_TIMING6 DSI_REG(DSI_PROTO, 0x008C)
88 #define DSI_VM_TIMING7 DSI_REG(DSI_PROTO, 0x0090)
89 #define DSI_STOPCLK_TIMING DSI_REG(DSI_PROTO, 0x0094)
90 #define DSI_VC_CTRL(n) DSI_REG(DSI_PROTO, 0x0100 + (n * 0x20))
91 #define DSI_VC_TE(n) DSI_REG(DSI_PROTO, 0x0104 + (n * 0x20))
92 #define DSI_VC_LONG_PACKET_HEADER(n) DSI_REG(DSI_PROTO, 0x0108 + (n * 0x20))
93 #define DSI_VC_LONG_PACKET_PAYLOAD(n) DSI_REG(DSI_PROTO, 0x010C + (n * 0x20))
94 #define DSI_VC_SHORT_PACKET_HEADER(n) DSI_REG(DSI_PROTO, 0x0110 + (n * 0x20))
95 #define DSI_VC_IRQSTATUS(n) DSI_REG(DSI_PROTO, 0x0118 + (n * 0x20))
96 #define DSI_VC_IRQENABLE(n) DSI_REG(DSI_PROTO, 0x011C + (n * 0x20))
101 #define DSI_PHY_OFFSET 0x200
102 #define DSI_PHY_SZ 0x40
104 #define DSI_DSIPHY_CFG0 DSI_REG(DSI_PHY, 0x0000)
105 #define DSI_DSIPHY_CFG1 DSI_REG(DSI_PHY, 0x0004)
106 #define DSI_DSIPHY_CFG2 DSI_REG(DSI_PHY, 0x0008)
107 #define DSI_DSIPHY_CFG5 DSI_REG(DSI_PHY, 0x0014)
108 #define DSI_DSIPHY_CFG10 DSI_REG(DSI_PHY, 0x0028)
110 /* DSI_PLL_CTRL_SCP */
113 #define DSI_PLL_OFFSET 0x300
114 #define DSI_PLL_SZ 0x20
116 #define DSI_PLL_CONTROL DSI_REG(DSI_PLL, 0x0000)
117 #define DSI_PLL_STATUS DSI_REG(DSI_PLL, 0x0004)
118 #define DSI_PLL_GO DSI_REG(DSI_PLL, 0x0008)
119 #define DSI_PLL_CONFIGURATION1 DSI_REG(DSI_PLL, 0x000C)
120 #define DSI_PLL_CONFIGURATION2 DSI_REG(DSI_PLL, 0x0010)
122 #define REG_GET(dsi, idx, start, end) \
123 FLD_GET(dsi_read_reg(dsi, idx), start, end)
125 #define REG_FLD_MOD(dsi, idx, val, start, end) \
126 dsi_write_reg(dsi, idx, FLD_MOD(dsi_read_reg(dsi, idx), val, start, end))
128 /* Global interrupts */
129 #define DSI_IRQ_VC0 (1 << 0)
130 #define DSI_IRQ_VC1 (1 << 1)
131 #define DSI_IRQ_VC2 (1 << 2)
132 #define DSI_IRQ_VC3 (1 << 3)
133 #define DSI_IRQ_WAKEUP (1 << 4)
134 #define DSI_IRQ_RESYNC (1 << 5)
135 #define DSI_IRQ_PLL_LOCK (1 << 7)
136 #define DSI_IRQ_PLL_UNLOCK (1 << 8)
137 #define DSI_IRQ_PLL_RECALL (1 << 9)
138 #define DSI_IRQ_COMPLEXIO_ERR (1 << 10)
139 #define DSI_IRQ_HS_TX_TIMEOUT (1 << 14)
140 #define DSI_IRQ_LP_RX_TIMEOUT (1 << 15)
141 #define DSI_IRQ_TE_TRIGGER (1 << 16)
142 #define DSI_IRQ_ACK_TRIGGER (1 << 17)
143 #define DSI_IRQ_SYNC_LOST (1 << 18)
144 #define DSI_IRQ_LDO_POWER_GOOD (1 << 19)
145 #define DSI_IRQ_TA_TIMEOUT (1 << 20)
146 #define DSI_IRQ_ERROR_MASK \
147 (DSI_IRQ_HS_TX_TIMEOUT | DSI_IRQ_LP_RX_TIMEOUT | DSI_IRQ_SYNC_LOST | \
149 #define DSI_IRQ_CHANNEL_MASK 0xf
151 /* Virtual channel interrupts */
152 #define DSI_VC_IRQ_CS (1 << 0)
153 #define DSI_VC_IRQ_ECC_CORR (1 << 1)
154 #define DSI_VC_IRQ_PACKET_SENT (1 << 2)
155 #define DSI_VC_IRQ_FIFO_TX_OVF (1 << 3)
156 #define DSI_VC_IRQ_FIFO_RX_OVF (1 << 4)
157 #define DSI_VC_IRQ_BTA (1 << 5)
158 #define DSI_VC_IRQ_ECC_NO_CORR (1 << 6)
159 #define DSI_VC_IRQ_FIFO_TX_UDF (1 << 7)
160 #define DSI_VC_IRQ_PP_BUSY_CHANGE (1 << 8)
161 #define DSI_VC_IRQ_ERROR_MASK \
162 (DSI_VC_IRQ_CS | DSI_VC_IRQ_ECC_CORR | DSI_VC_IRQ_FIFO_TX_OVF | \
163 DSI_VC_IRQ_FIFO_RX_OVF | DSI_VC_IRQ_ECC_NO_CORR | \
164 DSI_VC_IRQ_FIFO_TX_UDF)
166 /* ComplexIO interrupts */
167 #define DSI_CIO_IRQ_ERRSYNCESC1 (1 << 0)
168 #define DSI_CIO_IRQ_ERRSYNCESC2 (1 << 1)
169 #define DSI_CIO_IRQ_ERRSYNCESC3 (1 << 2)
170 #define DSI_CIO_IRQ_ERRSYNCESC4 (1 << 3)
171 #define DSI_CIO_IRQ_ERRSYNCESC5 (1 << 4)
172 #define DSI_CIO_IRQ_ERRESC1 (1 << 5)
173 #define DSI_CIO_IRQ_ERRESC2 (1 << 6)
174 #define DSI_CIO_IRQ_ERRESC3 (1 << 7)
175 #define DSI_CIO_IRQ_ERRESC4 (1 << 8)
176 #define DSI_CIO_IRQ_ERRESC5 (1 << 9)
177 #define DSI_CIO_IRQ_ERRCONTROL1 (1 << 10)
178 #define DSI_CIO_IRQ_ERRCONTROL2 (1 << 11)
179 #define DSI_CIO_IRQ_ERRCONTROL3 (1 << 12)
180 #define DSI_CIO_IRQ_ERRCONTROL4 (1 << 13)
181 #define DSI_CIO_IRQ_ERRCONTROL5 (1 << 14)
182 #define DSI_CIO_IRQ_STATEULPS1 (1 << 15)
183 #define DSI_CIO_IRQ_STATEULPS2 (1 << 16)
184 #define DSI_CIO_IRQ_STATEULPS3 (1 << 17)
185 #define DSI_CIO_IRQ_STATEULPS4 (1 << 18)
186 #define DSI_CIO_IRQ_STATEULPS5 (1 << 19)
187 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_1 (1 << 20)
188 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_1 (1 << 21)
189 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_2 (1 << 22)
190 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_2 (1 << 23)
191 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_3 (1 << 24)
192 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_3 (1 << 25)
193 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_4 (1 << 26)
194 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_4 (1 << 27)
195 #define DSI_CIO_IRQ_ERRCONTENTIONLP0_5 (1 << 28)
196 #define DSI_CIO_IRQ_ERRCONTENTIONLP1_5 (1 << 29)
197 #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL0 (1 << 30)
198 #define DSI_CIO_IRQ_ULPSACTIVENOT_ALL1 (1 << 31)
199 #define DSI_CIO_IRQ_ERROR_MASK \
200 (DSI_CIO_IRQ_ERRSYNCESC1 | DSI_CIO_IRQ_ERRSYNCESC2 | \
201 DSI_CIO_IRQ_ERRSYNCESC3 | DSI_CIO_IRQ_ERRSYNCESC4 | \
202 DSI_CIO_IRQ_ERRSYNCESC5 | \
203 DSI_CIO_IRQ_ERRESC1 | DSI_CIO_IRQ_ERRESC2 | \
204 DSI_CIO_IRQ_ERRESC3 | DSI_CIO_IRQ_ERRESC4 | \
205 DSI_CIO_IRQ_ERRESC5 | \
206 DSI_CIO_IRQ_ERRCONTROL1 | DSI_CIO_IRQ_ERRCONTROL2 | \
207 DSI_CIO_IRQ_ERRCONTROL3 | DSI_CIO_IRQ_ERRCONTROL4 | \
208 DSI_CIO_IRQ_ERRCONTROL5 | \
209 DSI_CIO_IRQ_ERRCONTENTIONLP0_1 | DSI_CIO_IRQ_ERRCONTENTIONLP1_1 | \
210 DSI_CIO_IRQ_ERRCONTENTIONLP0_2 | DSI_CIO_IRQ_ERRCONTENTIONLP1_2 | \
211 DSI_CIO_IRQ_ERRCONTENTIONLP0_3 | DSI_CIO_IRQ_ERRCONTENTIONLP1_3 | \
212 DSI_CIO_IRQ_ERRCONTENTIONLP0_4 | DSI_CIO_IRQ_ERRCONTENTIONLP1_4 | \
213 DSI_CIO_IRQ_ERRCONTENTIONLP0_5 | DSI_CIO_IRQ_ERRCONTENTIONLP1_5)
215 typedef void (*omap_dsi_isr_t) (void *arg, u32 mask);
218 static int dsi_display_init_dispc(struct dsi_data *dsi);
219 static void dsi_display_uninit_dispc(struct dsi_data *dsi);
221 static int dsi_vc_send_null(struct dsi_data *dsi, int channel);
223 /* DSI PLL HSDIV indices */
224 #define HSDIV_DISPC 0
227 #define DSI_MAX_NR_ISRS 2
228 #define DSI_MAX_NR_LANES 5
236 enum dsi_lane_function {
245 struct dsi_lane_config {
246 enum dsi_lane_function function;
250 struct dsi_isr_data {
258 DSI_FIFO_SIZE_32 = 1,
259 DSI_FIFO_SIZE_64 = 2,
260 DSI_FIFO_SIZE_96 = 3,
261 DSI_FIFO_SIZE_128 = 4,
265 DSI_VC_SOURCE_L4 = 0,
269 struct dsi_irq_stats {
270 unsigned long last_reset;
271 unsigned int irq_count;
272 unsigned int dsi_irqs[32];
273 unsigned int vc_irqs[4][32];
274 unsigned int cio_irqs[32];
277 struct dsi_isr_tables {
278 struct dsi_isr_data isr_table[DSI_MAX_NR_ISRS];
279 struct dsi_isr_data isr_table_vc[4][DSI_MAX_NR_ISRS];
280 struct dsi_isr_data isr_table_cio[DSI_MAX_NR_ISRS];
283 struct dsi_clk_calc_ctx {
284 struct dsi_data *dsi;
289 const struct omap_dss_dsi_config *config;
291 unsigned long req_pck_min, req_pck_nom, req_pck_max;
295 struct dss_pll_clock_info dsi_cinfo;
296 struct dispc_clock_info dispc_cinfo;
299 struct omap_dss_dsi_videomode_timings dsi_vm;
302 struct dsi_lp_clock_info {
303 unsigned long lp_clk;
307 struct dsi_module_id_data {
313 DSI_QUIRK_PLL_PWR_BUG = (1 << 0), /* DSI-PLL power command 0x3 is not working */
314 DSI_QUIRK_DCS_CMD_CONFIG_VC = (1 << 1),
315 DSI_QUIRK_VC_OCP_WIDTH = (1 << 2),
316 DSI_QUIRK_REVERSE_TXCLKESC = (1 << 3),
317 DSI_QUIRK_GNQ = (1 << 4),
318 DSI_QUIRK_PHY_DCC = (1 << 5),
322 enum dsi_model model;
323 const struct dss_pll_hw *pll_hw;
324 const struct dsi_module_id_data *modules;
325 unsigned int max_fck_freq;
326 unsigned int max_pll_lpdiv;
327 enum dsi_quirks quirks;
332 void __iomem *proto_base;
333 void __iomem *phy_base;
334 void __iomem *pll_base;
336 const struct dsi_of_data *data;
344 struct regmap *syscon;
345 struct dss_device *dss;
347 struct dispc_clock_info user_dispc_cinfo;
348 struct dss_pll_clock_info user_dsi_cinfo;
350 struct dsi_lp_clock_info user_lp_cinfo;
351 struct dsi_lp_clock_info current_lp_cinfo;
355 bool vdds_dsi_enabled;
356 struct regulator *vdds_dsi_reg;
359 enum dsi_vc_source source;
360 struct omap_dss_device *dssdev;
361 enum fifo_size tx_fifo_size;
362 enum fifo_size rx_fifo_size;
367 struct semaphore bus_lock;
370 struct dsi_isr_tables isr_tables;
371 /* space for a copy used by the interrupt handler */
372 struct dsi_isr_tables isr_tables_copy;
375 #ifdef DSI_PERF_MEASURE
376 unsigned int update_bytes;
382 void (*framedone_callback)(int, void *);
383 void *framedone_data;
385 struct delayed_work framedone_timeout_work;
387 #ifdef DSI_CATCH_MISSING_TE
388 struct timer_list te_timer;
391 unsigned long cache_req_pck;
392 unsigned long cache_clk_freq;
393 struct dss_pll_clock_info cache_cinfo;
396 spinlock_t errors_lock;
397 #ifdef DSI_PERF_MEASURE
398 ktime_t perf_setup_time;
399 ktime_t perf_start_time;
404 struct dss_debugfs_entry *irqs;
405 struct dss_debugfs_entry *regs;
408 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
409 spinlock_t irq_stats_lock;
410 struct dsi_irq_stats irq_stats;
413 unsigned int num_lanes_supported;
414 unsigned int line_buffer_size;
416 struct dsi_lane_config lanes[DSI_MAX_NR_LANES];
417 unsigned int num_lanes_used;
419 unsigned int scp_clk_refcount;
421 struct dss_lcd_mgr_config mgr_config;
423 enum omap_dss_dsi_pixel_format pix_fmt;
424 enum omap_dss_dsi_mode mode;
425 struct omap_dss_dsi_videomode_timings vm_timings;
427 struct omap_dss_device output;
430 struct dsi_packet_sent_handler_data {
431 struct dsi_data *dsi;
432 struct completion *completion;
435 #ifdef DSI_PERF_MEASURE
436 static bool dsi_perf;
437 module_param(dsi_perf, bool, 0644);
440 static inline struct dsi_data *to_dsi_data(struct omap_dss_device *dssdev)
442 return dev_get_drvdata(dssdev->dev);
445 static struct dsi_data *dsi_get_dsi_from_id(int module)
447 struct omap_dss_device *out;
448 enum omap_dss_output_id id;
452 id = OMAP_DSS_OUTPUT_DSI1;
455 id = OMAP_DSS_OUTPUT_DSI2;
461 out = omap_dss_get_output(id);
463 return out ? to_dsi_data(out) : NULL;
466 static inline void dsi_write_reg(struct dsi_data *dsi,
467 const struct dsi_reg idx, u32 val)
472 case DSI_PROTO: base = dsi->proto_base; break;
473 case DSI_PHY: base = dsi->phy_base; break;
474 case DSI_PLL: base = dsi->pll_base; break;
478 __raw_writel(val, base + idx.idx);
481 static inline u32 dsi_read_reg(struct dsi_data *dsi, const struct dsi_reg idx)
486 case DSI_PROTO: base = dsi->proto_base; break;
487 case DSI_PHY: base = dsi->phy_base; break;
488 case DSI_PLL: base = dsi->pll_base; break;
492 return __raw_readl(base + idx.idx);
495 static void dsi_bus_lock(struct omap_dss_device *dssdev)
497 struct dsi_data *dsi = to_dsi_data(dssdev);
499 down(&dsi->bus_lock);
502 static void dsi_bus_unlock(struct omap_dss_device *dssdev)
504 struct dsi_data *dsi = to_dsi_data(dssdev);
509 static bool dsi_bus_is_locked(struct dsi_data *dsi)
511 return dsi->bus_lock.count == 0;
514 static void dsi_completion_handler(void *data, u32 mask)
516 complete((struct completion *)data);
519 static inline bool wait_for_bit_change(struct dsi_data *dsi,
520 const struct dsi_reg idx,
521 int bitnum, int value)
523 unsigned long timeout;
527 /* first busyloop to see if the bit changes right away */
530 if (REG_GET(dsi, idx, bitnum, bitnum) == value)
534 /* then loop for 500ms, sleeping for 1ms in between */
535 timeout = jiffies + msecs_to_jiffies(500);
536 while (time_before(jiffies, timeout)) {
537 if (REG_GET(dsi, idx, bitnum, bitnum) == value)
540 wait = ns_to_ktime(1000 * 1000);
541 set_current_state(TASK_UNINTERRUPTIBLE);
542 schedule_hrtimeout(&wait, HRTIMER_MODE_REL);
548 static u8 dsi_get_pixel_size(enum omap_dss_dsi_pixel_format fmt)
551 case OMAP_DSS_DSI_FMT_RGB888:
552 case OMAP_DSS_DSI_FMT_RGB666:
554 case OMAP_DSS_DSI_FMT_RGB666_PACKED:
556 case OMAP_DSS_DSI_FMT_RGB565:
564 #ifdef DSI_PERF_MEASURE
565 static void dsi_perf_mark_setup(struct dsi_data *dsi)
567 dsi->perf_setup_time = ktime_get();
570 static void dsi_perf_mark_start(struct dsi_data *dsi)
572 dsi->perf_start_time = ktime_get();
575 static void dsi_perf_show(struct dsi_data *dsi, const char *name)
577 ktime_t t, setup_time, trans_time;
579 u32 setup_us, trans_us, total_us;
586 setup_time = ktime_sub(dsi->perf_start_time, dsi->perf_setup_time);
587 setup_us = (u32)ktime_to_us(setup_time);
591 trans_time = ktime_sub(t, dsi->perf_start_time);
592 trans_us = (u32)ktime_to_us(trans_time);
596 total_us = setup_us + trans_us;
598 total_bytes = dsi->update_bytes;
600 pr_info("DSI(%s): %u us + %u us = %u us (%uHz), %u bytes, %u kbytes/sec\n",
605 1000 * 1000 / total_us,
607 total_bytes * 1000 / total_us);
610 static inline void dsi_perf_mark_setup(struct dsi_data *dsi)
614 static inline void dsi_perf_mark_start(struct dsi_data *dsi)
618 static inline void dsi_perf_show(struct dsi_data *dsi, const char *name)
623 static int verbose_irq;
625 static void print_irq_status(u32 status)
630 if (!verbose_irq && (status & ~DSI_IRQ_CHANNEL_MASK) == 0)
633 #define PIS(x) (status & DSI_IRQ_##x) ? (#x " ") : ""
635 pr_debug("DSI IRQ: 0x%x: %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
637 verbose_irq ? PIS(VC0) : "",
638 verbose_irq ? PIS(VC1) : "",
639 verbose_irq ? PIS(VC2) : "",
640 verbose_irq ? PIS(VC3) : "",
657 static void print_irq_status_vc(int channel, u32 status)
662 if (!verbose_irq && (status & ~DSI_VC_IRQ_PACKET_SENT) == 0)
665 #define PIS(x) (status & DSI_VC_IRQ_##x) ? (#x " ") : ""
667 pr_debug("DSI VC(%d) IRQ 0x%x: %s%s%s%s%s%s%s%s%s\n",
673 verbose_irq ? PIS(PACKET_SENT) : "",
678 PIS(PP_BUSY_CHANGE));
682 static void print_irq_status_cio(u32 status)
687 #define PIS(x) (status & DSI_CIO_IRQ_##x) ? (#x " ") : ""
689 pr_debug("DSI CIO IRQ 0x%x: %s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s%s\n",
703 PIS(ERRCONTENTIONLP0_1),
704 PIS(ERRCONTENTIONLP1_1),
705 PIS(ERRCONTENTIONLP0_2),
706 PIS(ERRCONTENTIONLP1_2),
707 PIS(ERRCONTENTIONLP0_3),
708 PIS(ERRCONTENTIONLP1_3),
709 PIS(ULPSACTIVENOT_ALL0),
710 PIS(ULPSACTIVENOT_ALL1));
714 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
715 static void dsi_collect_irq_stats(struct dsi_data *dsi, u32 irqstatus,
716 u32 *vcstatus, u32 ciostatus)
720 spin_lock(&dsi->irq_stats_lock);
722 dsi->irq_stats.irq_count++;
723 dss_collect_irq_stats(irqstatus, dsi->irq_stats.dsi_irqs);
725 for (i = 0; i < 4; ++i)
726 dss_collect_irq_stats(vcstatus[i], dsi->irq_stats.vc_irqs[i]);
728 dss_collect_irq_stats(ciostatus, dsi->irq_stats.cio_irqs);
730 spin_unlock(&dsi->irq_stats_lock);
733 #define dsi_collect_irq_stats(dsi, irqstatus, vcstatus, ciostatus)
736 static int debug_irq;
738 static void dsi_handle_irq_errors(struct dsi_data *dsi, u32 irqstatus,
739 u32 *vcstatus, u32 ciostatus)
743 if (irqstatus & DSI_IRQ_ERROR_MASK) {
744 DSSERR("DSI error, irqstatus %x\n", irqstatus);
745 print_irq_status(irqstatus);
746 spin_lock(&dsi->errors_lock);
747 dsi->errors |= irqstatus & DSI_IRQ_ERROR_MASK;
748 spin_unlock(&dsi->errors_lock);
749 } else if (debug_irq) {
750 print_irq_status(irqstatus);
753 for (i = 0; i < 4; ++i) {
754 if (vcstatus[i] & DSI_VC_IRQ_ERROR_MASK) {
755 DSSERR("DSI VC(%d) error, vc irqstatus %x\n",
757 print_irq_status_vc(i, vcstatus[i]);
758 } else if (debug_irq) {
759 print_irq_status_vc(i, vcstatus[i]);
763 if (ciostatus & DSI_CIO_IRQ_ERROR_MASK) {
764 DSSERR("DSI CIO error, cio irqstatus %x\n", ciostatus);
765 print_irq_status_cio(ciostatus);
766 } else if (debug_irq) {
767 print_irq_status_cio(ciostatus);
771 static void dsi_call_isrs(struct dsi_isr_data *isr_array,
772 unsigned int isr_array_size, u32 irqstatus)
774 struct dsi_isr_data *isr_data;
777 for (i = 0; i < isr_array_size; i++) {
778 isr_data = &isr_array[i];
779 if (isr_data->isr && isr_data->mask & irqstatus)
780 isr_data->isr(isr_data->arg, irqstatus);
784 static void dsi_handle_isrs(struct dsi_isr_tables *isr_tables,
785 u32 irqstatus, u32 *vcstatus, u32 ciostatus)
789 dsi_call_isrs(isr_tables->isr_table,
790 ARRAY_SIZE(isr_tables->isr_table),
793 for (i = 0; i < 4; ++i) {
794 if (vcstatus[i] == 0)
796 dsi_call_isrs(isr_tables->isr_table_vc[i],
797 ARRAY_SIZE(isr_tables->isr_table_vc[i]),
802 dsi_call_isrs(isr_tables->isr_table_cio,
803 ARRAY_SIZE(isr_tables->isr_table_cio),
807 static irqreturn_t omap_dsi_irq_handler(int irq, void *arg)
809 struct dsi_data *dsi = arg;
810 u32 irqstatus, vcstatus[4], ciostatus;
813 if (!dsi->is_enabled)
816 spin_lock(&dsi->irq_lock);
818 irqstatus = dsi_read_reg(dsi, DSI_IRQSTATUS);
820 /* IRQ is not for us */
822 spin_unlock(&dsi->irq_lock);
826 dsi_write_reg(dsi, DSI_IRQSTATUS, irqstatus & ~DSI_IRQ_CHANNEL_MASK);
827 /* flush posted write */
828 dsi_read_reg(dsi, DSI_IRQSTATUS);
830 for (i = 0; i < 4; ++i) {
831 if ((irqstatus & (1 << i)) == 0) {
836 vcstatus[i] = dsi_read_reg(dsi, DSI_VC_IRQSTATUS(i));
838 dsi_write_reg(dsi, DSI_VC_IRQSTATUS(i), vcstatus[i]);
839 /* flush posted write */
840 dsi_read_reg(dsi, DSI_VC_IRQSTATUS(i));
843 if (irqstatus & DSI_IRQ_COMPLEXIO_ERR) {
844 ciostatus = dsi_read_reg(dsi, DSI_COMPLEXIO_IRQ_STATUS);
846 dsi_write_reg(dsi, DSI_COMPLEXIO_IRQ_STATUS, ciostatus);
847 /* flush posted write */
848 dsi_read_reg(dsi, DSI_COMPLEXIO_IRQ_STATUS);
853 #ifdef DSI_CATCH_MISSING_TE
854 if (irqstatus & DSI_IRQ_TE_TRIGGER)
855 del_timer(&dsi->te_timer);
858 /* make a copy and unlock, so that isrs can unregister
860 memcpy(&dsi->isr_tables_copy, &dsi->isr_tables,
861 sizeof(dsi->isr_tables));
863 spin_unlock(&dsi->irq_lock);
865 dsi_handle_isrs(&dsi->isr_tables_copy, irqstatus, vcstatus, ciostatus);
867 dsi_handle_irq_errors(dsi, irqstatus, vcstatus, ciostatus);
869 dsi_collect_irq_stats(dsi, irqstatus, vcstatus, ciostatus);
874 /* dsi->irq_lock has to be locked by the caller */
875 static void _omap_dsi_configure_irqs(struct dsi_data *dsi,
876 struct dsi_isr_data *isr_array,
877 unsigned int isr_array_size,
879 const struct dsi_reg enable_reg,
880 const struct dsi_reg status_reg)
882 struct dsi_isr_data *isr_data;
889 for (i = 0; i < isr_array_size; i++) {
890 isr_data = &isr_array[i];
892 if (isr_data->isr == NULL)
895 mask |= isr_data->mask;
898 old_mask = dsi_read_reg(dsi, enable_reg);
899 /* clear the irqstatus for newly enabled irqs */
900 dsi_write_reg(dsi, status_reg, (mask ^ old_mask) & mask);
901 dsi_write_reg(dsi, enable_reg, mask);
903 /* flush posted writes */
904 dsi_read_reg(dsi, enable_reg);
905 dsi_read_reg(dsi, status_reg);
908 /* dsi->irq_lock has to be locked by the caller */
909 static void _omap_dsi_set_irqs(struct dsi_data *dsi)
911 u32 mask = DSI_IRQ_ERROR_MASK;
912 #ifdef DSI_CATCH_MISSING_TE
913 mask |= DSI_IRQ_TE_TRIGGER;
915 _omap_dsi_configure_irqs(dsi, dsi->isr_tables.isr_table,
916 ARRAY_SIZE(dsi->isr_tables.isr_table), mask,
917 DSI_IRQENABLE, DSI_IRQSTATUS);
920 /* dsi->irq_lock has to be locked by the caller */
921 static void _omap_dsi_set_irqs_vc(struct dsi_data *dsi, int vc)
923 _omap_dsi_configure_irqs(dsi, dsi->isr_tables.isr_table_vc[vc],
924 ARRAY_SIZE(dsi->isr_tables.isr_table_vc[vc]),
925 DSI_VC_IRQ_ERROR_MASK,
926 DSI_VC_IRQENABLE(vc), DSI_VC_IRQSTATUS(vc));
929 /* dsi->irq_lock has to be locked by the caller */
930 static void _omap_dsi_set_irqs_cio(struct dsi_data *dsi)
932 _omap_dsi_configure_irqs(dsi, dsi->isr_tables.isr_table_cio,
933 ARRAY_SIZE(dsi->isr_tables.isr_table_cio),
934 DSI_CIO_IRQ_ERROR_MASK,
935 DSI_COMPLEXIO_IRQ_ENABLE, DSI_COMPLEXIO_IRQ_STATUS);
938 static void _dsi_initialize_irq(struct dsi_data *dsi)
943 spin_lock_irqsave(&dsi->irq_lock, flags);
945 memset(&dsi->isr_tables, 0, sizeof(dsi->isr_tables));
947 _omap_dsi_set_irqs(dsi);
948 for (vc = 0; vc < 4; ++vc)
949 _omap_dsi_set_irqs_vc(dsi, vc);
950 _omap_dsi_set_irqs_cio(dsi);
952 spin_unlock_irqrestore(&dsi->irq_lock, flags);
955 static int _dsi_register_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
956 struct dsi_isr_data *isr_array, unsigned int isr_array_size)
958 struct dsi_isr_data *isr_data;
964 /* check for duplicate entry and find a free slot */
966 for (i = 0; i < isr_array_size; i++) {
967 isr_data = &isr_array[i];
969 if (isr_data->isr == isr && isr_data->arg == arg &&
970 isr_data->mask == mask) {
974 if (isr_data->isr == NULL && free_idx == -1)
981 isr_data = &isr_array[free_idx];
984 isr_data->mask = mask;
989 static int _dsi_unregister_isr(omap_dsi_isr_t isr, void *arg, u32 mask,
990 struct dsi_isr_data *isr_array, unsigned int isr_array_size)
992 struct dsi_isr_data *isr_data;
995 for (i = 0; i < isr_array_size; i++) {
996 isr_data = &isr_array[i];
997 if (isr_data->isr != isr || isr_data->arg != arg ||
998 isr_data->mask != mask)
1001 isr_data->isr = NULL;
1002 isr_data->arg = NULL;
1011 static int dsi_register_isr(struct dsi_data *dsi, omap_dsi_isr_t isr,
1012 void *arg, u32 mask)
1014 unsigned long flags;
1017 spin_lock_irqsave(&dsi->irq_lock, flags);
1019 r = _dsi_register_isr(isr, arg, mask, dsi->isr_tables.isr_table,
1020 ARRAY_SIZE(dsi->isr_tables.isr_table));
1023 _omap_dsi_set_irqs(dsi);
1025 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1030 static int dsi_unregister_isr(struct dsi_data *dsi, omap_dsi_isr_t isr,
1031 void *arg, u32 mask)
1033 unsigned long flags;
1036 spin_lock_irqsave(&dsi->irq_lock, flags);
1038 r = _dsi_unregister_isr(isr, arg, mask, dsi->isr_tables.isr_table,
1039 ARRAY_SIZE(dsi->isr_tables.isr_table));
1042 _omap_dsi_set_irqs(dsi);
1044 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1049 static int dsi_register_isr_vc(struct dsi_data *dsi, int channel,
1050 omap_dsi_isr_t isr, void *arg, u32 mask)
1052 unsigned long flags;
1055 spin_lock_irqsave(&dsi->irq_lock, flags);
1057 r = _dsi_register_isr(isr, arg, mask,
1058 dsi->isr_tables.isr_table_vc[channel],
1059 ARRAY_SIZE(dsi->isr_tables.isr_table_vc[channel]));
1062 _omap_dsi_set_irqs_vc(dsi, channel);
1064 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1069 static int dsi_unregister_isr_vc(struct dsi_data *dsi, int channel,
1070 omap_dsi_isr_t isr, void *arg, u32 mask)
1072 unsigned long flags;
1075 spin_lock_irqsave(&dsi->irq_lock, flags);
1077 r = _dsi_unregister_isr(isr, arg, mask,
1078 dsi->isr_tables.isr_table_vc[channel],
1079 ARRAY_SIZE(dsi->isr_tables.isr_table_vc[channel]));
1082 _omap_dsi_set_irqs_vc(dsi, channel);
1084 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1089 static int dsi_register_isr_cio(struct dsi_data *dsi, omap_dsi_isr_t isr,
1090 void *arg, u32 mask)
1092 unsigned long flags;
1095 spin_lock_irqsave(&dsi->irq_lock, flags);
1097 r = _dsi_register_isr(isr, arg, mask, dsi->isr_tables.isr_table_cio,
1098 ARRAY_SIZE(dsi->isr_tables.isr_table_cio));
1101 _omap_dsi_set_irqs_cio(dsi);
1103 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1108 static int dsi_unregister_isr_cio(struct dsi_data *dsi, omap_dsi_isr_t isr,
1109 void *arg, u32 mask)
1111 unsigned long flags;
1114 spin_lock_irqsave(&dsi->irq_lock, flags);
1116 r = _dsi_unregister_isr(isr, arg, mask, dsi->isr_tables.isr_table_cio,
1117 ARRAY_SIZE(dsi->isr_tables.isr_table_cio));
1120 _omap_dsi_set_irqs_cio(dsi);
1122 spin_unlock_irqrestore(&dsi->irq_lock, flags);
1127 static u32 dsi_get_errors(struct dsi_data *dsi)
1129 unsigned long flags;
1132 spin_lock_irqsave(&dsi->errors_lock, flags);
1135 spin_unlock_irqrestore(&dsi->errors_lock, flags);
1139 static int dsi_runtime_get(struct dsi_data *dsi)
1143 DSSDBG("dsi_runtime_get\n");
1145 r = pm_runtime_get_sync(dsi->dev);
1147 return r < 0 ? r : 0;
1150 static void dsi_runtime_put(struct dsi_data *dsi)
1154 DSSDBG("dsi_runtime_put\n");
1156 r = pm_runtime_put_sync(dsi->dev);
1157 WARN_ON(r < 0 && r != -ENOSYS);
1160 static int dsi_regulator_init(struct dsi_data *dsi)
1162 struct regulator *vdds_dsi;
1164 if (dsi->vdds_dsi_reg != NULL)
1167 vdds_dsi = devm_regulator_get(dsi->dev, "vdd");
1169 if (IS_ERR(vdds_dsi)) {
1170 if (PTR_ERR(vdds_dsi) != -EPROBE_DEFER)
1171 DSSERR("can't get DSI VDD regulator\n");
1172 return PTR_ERR(vdds_dsi);
1175 dsi->vdds_dsi_reg = vdds_dsi;
1180 static void _dsi_print_reset_status(struct dsi_data *dsi)
1185 /* A dummy read using the SCP interface to any DSIPHY register is
1186 * required after DSIPHY reset to complete the reset of the DSI complex
1188 l = dsi_read_reg(dsi, DSI_DSIPHY_CFG5);
1190 if (dsi->data->quirks & DSI_QUIRK_REVERSE_TXCLKESC) {
1200 #define DSI_FLD_GET(fld, start, end)\
1201 FLD_GET(dsi_read_reg(dsi, DSI_##fld), start, end)
1203 pr_debug("DSI resets: PLL (%d) CIO (%d) PHY (%x%x%x, %d, %d, %d)\n",
1204 DSI_FLD_GET(PLL_STATUS, 0, 0),
1205 DSI_FLD_GET(COMPLEXIO_CFG1, 29, 29),
1206 DSI_FLD_GET(DSIPHY_CFG5, b0, b0),
1207 DSI_FLD_GET(DSIPHY_CFG5, b1, b1),
1208 DSI_FLD_GET(DSIPHY_CFG5, b2, b2),
1209 DSI_FLD_GET(DSIPHY_CFG5, 29, 29),
1210 DSI_FLD_GET(DSIPHY_CFG5, 30, 30),
1211 DSI_FLD_GET(DSIPHY_CFG5, 31, 31));
1216 static inline int dsi_if_enable(struct dsi_data *dsi, bool enable)
1218 DSSDBG("dsi_if_enable(%d)\n", enable);
1220 enable = enable ? 1 : 0;
1221 REG_FLD_MOD(dsi, DSI_CTRL, enable, 0, 0); /* IF_EN */
1223 if (!wait_for_bit_change(dsi, DSI_CTRL, 0, enable)) {
1224 DSSERR("Failed to set dsi_if_enable to %d\n", enable);
1231 static unsigned long dsi_get_pll_hsdiv_dispc_rate(struct dsi_data *dsi)
1233 return dsi->pll.cinfo.clkout[HSDIV_DISPC];
1236 static unsigned long dsi_get_pll_hsdiv_dsi_rate(struct dsi_data *dsi)
1238 return dsi->pll.cinfo.clkout[HSDIV_DSI];
1241 static unsigned long dsi_get_txbyteclkhs(struct dsi_data *dsi)
1243 return dsi->pll.cinfo.clkdco / 16;
1246 static unsigned long dsi_fclk_rate(struct dsi_data *dsi)
1249 enum dss_clk_source source;
1251 source = dss_get_dsi_clk_source(dsi->dss, dsi->module_id);
1252 if (source == DSS_CLK_SRC_FCK) {
1253 /* DSI FCLK source is DSS_CLK_FCK */
1254 r = clk_get_rate(dsi->dss_clk);
1256 /* DSI FCLK source is dsi_pll_hsdiv_dsi_clk */
1257 r = dsi_get_pll_hsdiv_dsi_rate(dsi);
1263 static int dsi_lp_clock_calc(unsigned long dsi_fclk,
1264 unsigned long lp_clk_min, unsigned long lp_clk_max,
1265 struct dsi_lp_clock_info *lp_cinfo)
1267 unsigned int lp_clk_div;
1268 unsigned long lp_clk;
1270 lp_clk_div = DIV_ROUND_UP(dsi_fclk, lp_clk_max * 2);
1271 lp_clk = dsi_fclk / 2 / lp_clk_div;
1273 if (lp_clk < lp_clk_min || lp_clk > lp_clk_max)
1276 lp_cinfo->lp_clk_div = lp_clk_div;
1277 lp_cinfo->lp_clk = lp_clk;
1282 static int dsi_set_lp_clk_divisor(struct dsi_data *dsi)
1284 unsigned long dsi_fclk;
1285 unsigned int lp_clk_div;
1286 unsigned long lp_clk;
1287 unsigned int lpdiv_max = dsi->data->max_pll_lpdiv;
1290 lp_clk_div = dsi->user_lp_cinfo.lp_clk_div;
1292 if (lp_clk_div == 0 || lp_clk_div > lpdiv_max)
1295 dsi_fclk = dsi_fclk_rate(dsi);
1297 lp_clk = dsi_fclk / 2 / lp_clk_div;
1299 DSSDBG("LP_CLK_DIV %u, LP_CLK %lu\n", lp_clk_div, lp_clk);
1300 dsi->current_lp_cinfo.lp_clk = lp_clk;
1301 dsi->current_lp_cinfo.lp_clk_div = lp_clk_div;
1303 /* LP_CLK_DIVISOR */
1304 REG_FLD_MOD(dsi, DSI_CLK_CTRL, lp_clk_div, 12, 0);
1306 /* LP_RX_SYNCHRO_ENABLE */
1307 REG_FLD_MOD(dsi, DSI_CLK_CTRL, dsi_fclk > 30000000 ? 1 : 0, 21, 21);
1312 static void dsi_enable_scp_clk(struct dsi_data *dsi)
1314 if (dsi->scp_clk_refcount++ == 0)
1315 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 1, 14, 14); /* CIO_CLK_ICG */
1318 static void dsi_disable_scp_clk(struct dsi_data *dsi)
1320 WARN_ON(dsi->scp_clk_refcount == 0);
1321 if (--dsi->scp_clk_refcount == 0)
1322 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 0, 14, 14); /* CIO_CLK_ICG */
1325 enum dsi_pll_power_state {
1326 DSI_PLL_POWER_OFF = 0x0,
1327 DSI_PLL_POWER_ON_HSCLK = 0x1,
1328 DSI_PLL_POWER_ON_ALL = 0x2,
1329 DSI_PLL_POWER_ON_DIV = 0x3,
1332 static int dsi_pll_power(struct dsi_data *dsi, enum dsi_pll_power_state state)
1336 /* DSI-PLL power command 0x3 is not working */
1337 if ((dsi->data->quirks & DSI_QUIRK_PLL_PWR_BUG) &&
1338 state == DSI_PLL_POWER_ON_DIV)
1339 state = DSI_PLL_POWER_ON_ALL;
1342 REG_FLD_MOD(dsi, DSI_CLK_CTRL, state, 31, 30);
1344 /* PLL_PWR_STATUS */
1345 while (FLD_GET(dsi_read_reg(dsi, DSI_CLK_CTRL), 29, 28) != state) {
1347 DSSERR("Failed to set DSI PLL power mode to %d\n",
1358 static void dsi_pll_calc_dsi_fck(struct dsi_data *dsi,
1359 struct dss_pll_clock_info *cinfo)
1361 unsigned long max_dsi_fck;
1363 max_dsi_fck = dsi->data->max_fck_freq;
1365 cinfo->mX[HSDIV_DSI] = DIV_ROUND_UP(cinfo->clkdco, max_dsi_fck);
1366 cinfo->clkout[HSDIV_DSI] = cinfo->clkdco / cinfo->mX[HSDIV_DSI];
1369 static int dsi_pll_enable(struct dss_pll *pll)
1371 struct dsi_data *dsi = container_of(pll, struct dsi_data, pll);
1374 DSSDBG("PLL init\n");
1376 r = dsi_regulator_init(dsi);
1380 r = dsi_runtime_get(dsi);
1385 * Note: SCP CLK is not required on OMAP3, but it is required on OMAP4.
1387 dsi_enable_scp_clk(dsi);
1389 if (!dsi->vdds_dsi_enabled) {
1390 r = regulator_enable(dsi->vdds_dsi_reg);
1393 dsi->vdds_dsi_enabled = true;
1396 /* XXX PLL does not come out of reset without this... */
1397 dispc_pck_free_enable(dsi->dss->dispc, 1);
1399 if (!wait_for_bit_change(dsi, DSI_PLL_STATUS, 0, 1)) {
1400 DSSERR("PLL not coming out of reset.\n");
1402 dispc_pck_free_enable(dsi->dss->dispc, 0);
1406 /* XXX ... but if left on, we get problems when planes do not
1407 * fill the whole display. No idea about this */
1408 dispc_pck_free_enable(dsi->dss->dispc, 0);
1410 r = dsi_pll_power(dsi, DSI_PLL_POWER_ON_ALL);
1415 DSSDBG("PLL init done\n");
1419 if (dsi->vdds_dsi_enabled) {
1420 regulator_disable(dsi->vdds_dsi_reg);
1421 dsi->vdds_dsi_enabled = false;
1424 dsi_disable_scp_clk(dsi);
1425 dsi_runtime_put(dsi);
1429 static void dsi_pll_uninit(struct dsi_data *dsi, bool disconnect_lanes)
1431 dsi_pll_power(dsi, DSI_PLL_POWER_OFF);
1432 if (disconnect_lanes) {
1433 WARN_ON(!dsi->vdds_dsi_enabled);
1434 regulator_disable(dsi->vdds_dsi_reg);
1435 dsi->vdds_dsi_enabled = false;
1438 dsi_disable_scp_clk(dsi);
1439 dsi_runtime_put(dsi);
1441 DSSDBG("PLL uninit done\n");
1444 static void dsi_pll_disable(struct dss_pll *pll)
1446 struct dsi_data *dsi = container_of(pll, struct dsi_data, pll);
1448 dsi_pll_uninit(dsi, true);
1451 static void dsi_dump_dsi_clocks(struct dsi_data *dsi, struct seq_file *s)
1453 struct dss_pll_clock_info *cinfo = &dsi->pll.cinfo;
1454 enum dss_clk_source dispc_clk_src, dsi_clk_src;
1455 int dsi_module = dsi->module_id;
1456 struct dss_pll *pll = &dsi->pll;
1458 dispc_clk_src = dss_get_dispc_clk_source(dsi->dss);
1459 dsi_clk_src = dss_get_dsi_clk_source(dsi->dss, dsi_module);
1461 if (dsi_runtime_get(dsi))
1464 seq_printf(s, "- DSI%d PLL -\n", dsi_module + 1);
1466 seq_printf(s, "dsi pll clkin\t%lu\n", clk_get_rate(pll->clkin));
1468 seq_printf(s, "Fint\t\t%-16lun %u\n", cinfo->fint, cinfo->n);
1470 seq_printf(s, "CLKIN4DDR\t%-16lum %u\n",
1471 cinfo->clkdco, cinfo->m);
1473 seq_printf(s, "DSI_PLL_HSDIV_DISPC (%s)\t%-16lum_dispc %u\t(%s)\n",
1474 dss_get_clk_source_name(dsi_module == 0 ?
1475 DSS_CLK_SRC_PLL1_1 :
1476 DSS_CLK_SRC_PLL2_1),
1477 cinfo->clkout[HSDIV_DISPC],
1478 cinfo->mX[HSDIV_DISPC],
1479 dispc_clk_src == DSS_CLK_SRC_FCK ?
1482 seq_printf(s, "DSI_PLL_HSDIV_DSI (%s)\t%-16lum_dsi %u\t(%s)\n",
1483 dss_get_clk_source_name(dsi_module == 0 ?
1484 DSS_CLK_SRC_PLL1_2 :
1485 DSS_CLK_SRC_PLL2_2),
1486 cinfo->clkout[HSDIV_DSI],
1487 cinfo->mX[HSDIV_DSI],
1488 dsi_clk_src == DSS_CLK_SRC_FCK ?
1491 seq_printf(s, "- DSI%d -\n", dsi_module + 1);
1493 seq_printf(s, "dsi fclk source = %s\n",
1494 dss_get_clk_source_name(dsi_clk_src));
1496 seq_printf(s, "DSI_FCLK\t%lu\n", dsi_fclk_rate(dsi));
1498 seq_printf(s, "DDR_CLK\t\t%lu\n",
1501 seq_printf(s, "TxByteClkHS\t%lu\n", dsi_get_txbyteclkhs(dsi));
1503 seq_printf(s, "LP_CLK\t\t%lu\n", dsi->current_lp_cinfo.lp_clk);
1505 dsi_runtime_put(dsi);
1508 void dsi_dump_clocks(struct seq_file *s)
1510 struct dsi_data *dsi;
1513 for (i = 0; i < MAX_NUM_DSI; i++) {
1514 dsi = dsi_get_dsi_from_id(i);
1516 dsi_dump_dsi_clocks(dsi, s);
1520 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
1521 static void dsi_dump_dsi_irqs(struct dsi_data *dsi, struct seq_file *s)
1523 unsigned long flags;
1524 struct dsi_irq_stats stats;
1526 spin_lock_irqsave(&dsi->irq_stats_lock, flags);
1528 stats = dsi->irq_stats;
1529 memset(&dsi->irq_stats, 0, sizeof(dsi->irq_stats));
1530 dsi->irq_stats.last_reset = jiffies;
1532 spin_unlock_irqrestore(&dsi->irq_stats_lock, flags);
1534 seq_printf(s, "period %u ms\n",
1535 jiffies_to_msecs(jiffies - stats.last_reset));
1537 seq_printf(s, "irqs %d\n", stats.irq_count);
1539 seq_printf(s, "%-20s %10d\n", #x, stats.dsi_irqs[ffs(DSI_IRQ_##x)-1]);
1541 seq_printf(s, "-- DSI%d interrupts --\n", dsi->module_id + 1);
1557 PIS(LDO_POWER_GOOD);
1562 seq_printf(s, "%-20s %10d %10d %10d %10d\n", #x, \
1563 stats.vc_irqs[0][ffs(DSI_VC_IRQ_##x)-1], \
1564 stats.vc_irqs[1][ffs(DSI_VC_IRQ_##x)-1], \
1565 stats.vc_irqs[2][ffs(DSI_VC_IRQ_##x)-1], \
1566 stats.vc_irqs[3][ffs(DSI_VC_IRQ_##x)-1]);
1568 seq_printf(s, "-- VC interrupts --\n");
1577 PIS(PP_BUSY_CHANGE);
1581 seq_printf(s, "%-20s %10d\n", #x, \
1582 stats.cio_irqs[ffs(DSI_CIO_IRQ_##x)-1]);
1584 seq_printf(s, "-- CIO interrupts --\n");
1597 PIS(ERRCONTENTIONLP0_1);
1598 PIS(ERRCONTENTIONLP1_1);
1599 PIS(ERRCONTENTIONLP0_2);
1600 PIS(ERRCONTENTIONLP1_2);
1601 PIS(ERRCONTENTIONLP0_3);
1602 PIS(ERRCONTENTIONLP1_3);
1603 PIS(ULPSACTIVENOT_ALL0);
1604 PIS(ULPSACTIVENOT_ALL1);
1608 static int dsi1_dump_irqs(struct seq_file *s, void *p)
1610 struct dsi_data *dsi = dsi_get_dsi_from_id(0);
1612 dsi_dump_dsi_irqs(dsi, s);
1616 static int dsi2_dump_irqs(struct seq_file *s, void *p)
1618 struct dsi_data *dsi = dsi_get_dsi_from_id(1);
1620 dsi_dump_dsi_irqs(dsi, s);
1625 static void dsi_dump_dsi_regs(struct dsi_data *dsi, struct seq_file *s)
1627 #define DUMPREG(r) seq_printf(s, "%-35s %08x\n", #r, dsi_read_reg(dsi, r))
1629 if (dsi_runtime_get(dsi))
1631 dsi_enable_scp_clk(dsi);
1633 DUMPREG(DSI_REVISION);
1634 DUMPREG(DSI_SYSCONFIG);
1635 DUMPREG(DSI_SYSSTATUS);
1636 DUMPREG(DSI_IRQSTATUS);
1637 DUMPREG(DSI_IRQENABLE);
1639 DUMPREG(DSI_COMPLEXIO_CFG1);
1640 DUMPREG(DSI_COMPLEXIO_IRQ_STATUS);
1641 DUMPREG(DSI_COMPLEXIO_IRQ_ENABLE);
1642 DUMPREG(DSI_CLK_CTRL);
1643 DUMPREG(DSI_TIMING1);
1644 DUMPREG(DSI_TIMING2);
1645 DUMPREG(DSI_VM_TIMING1);
1646 DUMPREG(DSI_VM_TIMING2);
1647 DUMPREG(DSI_VM_TIMING3);
1648 DUMPREG(DSI_CLK_TIMING);
1649 DUMPREG(DSI_TX_FIFO_VC_SIZE);
1650 DUMPREG(DSI_RX_FIFO_VC_SIZE);
1651 DUMPREG(DSI_COMPLEXIO_CFG2);
1652 DUMPREG(DSI_RX_FIFO_VC_FULLNESS);
1653 DUMPREG(DSI_VM_TIMING4);
1654 DUMPREG(DSI_TX_FIFO_VC_EMPTINESS);
1655 DUMPREG(DSI_VM_TIMING5);
1656 DUMPREG(DSI_VM_TIMING6);
1657 DUMPREG(DSI_VM_TIMING7);
1658 DUMPREG(DSI_STOPCLK_TIMING);
1660 DUMPREG(DSI_VC_CTRL(0));
1661 DUMPREG(DSI_VC_TE(0));
1662 DUMPREG(DSI_VC_LONG_PACKET_HEADER(0));
1663 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(0));
1664 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(0));
1665 DUMPREG(DSI_VC_IRQSTATUS(0));
1666 DUMPREG(DSI_VC_IRQENABLE(0));
1668 DUMPREG(DSI_VC_CTRL(1));
1669 DUMPREG(DSI_VC_TE(1));
1670 DUMPREG(DSI_VC_LONG_PACKET_HEADER(1));
1671 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(1));
1672 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(1));
1673 DUMPREG(DSI_VC_IRQSTATUS(1));
1674 DUMPREG(DSI_VC_IRQENABLE(1));
1676 DUMPREG(DSI_VC_CTRL(2));
1677 DUMPREG(DSI_VC_TE(2));
1678 DUMPREG(DSI_VC_LONG_PACKET_HEADER(2));
1679 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(2));
1680 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(2));
1681 DUMPREG(DSI_VC_IRQSTATUS(2));
1682 DUMPREG(DSI_VC_IRQENABLE(2));
1684 DUMPREG(DSI_VC_CTRL(3));
1685 DUMPREG(DSI_VC_TE(3));
1686 DUMPREG(DSI_VC_LONG_PACKET_HEADER(3));
1687 DUMPREG(DSI_VC_LONG_PACKET_PAYLOAD(3));
1688 DUMPREG(DSI_VC_SHORT_PACKET_HEADER(3));
1689 DUMPREG(DSI_VC_IRQSTATUS(3));
1690 DUMPREG(DSI_VC_IRQENABLE(3));
1692 DUMPREG(DSI_DSIPHY_CFG0);
1693 DUMPREG(DSI_DSIPHY_CFG1);
1694 DUMPREG(DSI_DSIPHY_CFG2);
1695 DUMPREG(DSI_DSIPHY_CFG5);
1697 DUMPREG(DSI_PLL_CONTROL);
1698 DUMPREG(DSI_PLL_STATUS);
1699 DUMPREG(DSI_PLL_GO);
1700 DUMPREG(DSI_PLL_CONFIGURATION1);
1701 DUMPREG(DSI_PLL_CONFIGURATION2);
1703 dsi_disable_scp_clk(dsi);
1704 dsi_runtime_put(dsi);
1708 static int dsi1_dump_regs(struct seq_file *s, void *p)
1710 struct dsi_data *dsi = dsi_get_dsi_from_id(0);
1712 dsi_dump_dsi_regs(dsi, s);
1716 static int dsi2_dump_regs(struct seq_file *s, void *p)
1718 struct dsi_data *dsi = dsi_get_dsi_from_id(1);
1720 dsi_dump_dsi_regs(dsi, s);
1724 enum dsi_cio_power_state {
1725 DSI_COMPLEXIO_POWER_OFF = 0x0,
1726 DSI_COMPLEXIO_POWER_ON = 0x1,
1727 DSI_COMPLEXIO_POWER_ULPS = 0x2,
1730 static int dsi_cio_power(struct dsi_data *dsi, enum dsi_cio_power_state state)
1735 REG_FLD_MOD(dsi, DSI_COMPLEXIO_CFG1, state, 28, 27);
1738 while (FLD_GET(dsi_read_reg(dsi, DSI_COMPLEXIO_CFG1),
1741 DSSERR("failed to set complexio power state to "
1751 static unsigned int dsi_get_line_buf_size(struct dsi_data *dsi)
1755 /* line buffer on OMAP3 is 1024 x 24bits */
1756 /* XXX: for some reason using full buffer size causes
1757 * considerable TX slowdown with update sizes that fill the
1759 if (!(dsi->data->quirks & DSI_QUIRK_GNQ))
1762 val = REG_GET(dsi, DSI_GNQ, 14, 12); /* VP1_LINE_BUFFER_SIZE */
1766 return 512 * 3; /* 512x24 bits */
1768 return 682 * 3; /* 682x24 bits */
1770 return 853 * 3; /* 853x24 bits */
1772 return 1024 * 3; /* 1024x24 bits */
1774 return 1194 * 3; /* 1194x24 bits */
1776 return 1365 * 3; /* 1365x24 bits */
1778 return 1920 * 3; /* 1920x24 bits */
1785 static int dsi_set_lane_config(struct dsi_data *dsi)
1787 static const u8 offsets[] = { 0, 4, 8, 12, 16 };
1788 static const enum dsi_lane_function functions[] = {
1798 r = dsi_read_reg(dsi, DSI_COMPLEXIO_CFG1);
1800 for (i = 0; i < dsi->num_lanes_used; ++i) {
1801 unsigned int offset = offsets[i];
1802 unsigned int polarity, lane_number;
1805 for (t = 0; t < dsi->num_lanes_supported; ++t)
1806 if (dsi->lanes[t].function == functions[i])
1809 if (t == dsi->num_lanes_supported)
1813 polarity = dsi->lanes[t].polarity;
1815 r = FLD_MOD(r, lane_number + 1, offset + 2, offset);
1816 r = FLD_MOD(r, polarity, offset + 3, offset + 3);
1819 /* clear the unused lanes */
1820 for (; i < dsi->num_lanes_supported; ++i) {
1821 unsigned int offset = offsets[i];
1823 r = FLD_MOD(r, 0, offset + 2, offset);
1824 r = FLD_MOD(r, 0, offset + 3, offset + 3);
1827 dsi_write_reg(dsi, DSI_COMPLEXIO_CFG1, r);
1832 static inline unsigned int ns2ddr(struct dsi_data *dsi, unsigned int ns)
1834 /* convert time in ns to ddr ticks, rounding up */
1835 unsigned long ddr_clk = dsi->pll.cinfo.clkdco / 4;
1837 return (ns * (ddr_clk / 1000 / 1000) + 999) / 1000;
1840 static inline unsigned int ddr2ns(struct dsi_data *dsi, unsigned int ddr)
1842 unsigned long ddr_clk = dsi->pll.cinfo.clkdco / 4;
1844 return ddr * 1000 * 1000 / (ddr_clk / 1000);
1847 static void dsi_cio_timings(struct dsi_data *dsi)
1850 u32 ths_prepare, ths_prepare_ths_zero, ths_trail, ths_exit;
1851 u32 tlpx_half, tclk_trail, tclk_zero;
1854 /* calculate timings */
1856 /* 1 * DDR_CLK = 2 * UI */
1858 /* min 40ns + 4*UI max 85ns + 6*UI */
1859 ths_prepare = ns2ddr(dsi, 70) + 2;
1861 /* min 145ns + 10*UI */
1862 ths_prepare_ths_zero = ns2ddr(dsi, 175) + 2;
1864 /* min max(8*UI, 60ns+4*UI) */
1865 ths_trail = ns2ddr(dsi, 60) + 5;
1868 ths_exit = ns2ddr(dsi, 145);
1871 tlpx_half = ns2ddr(dsi, 25);
1874 tclk_trail = ns2ddr(dsi, 60) + 2;
1876 /* min 38ns, max 95ns */
1877 tclk_prepare = ns2ddr(dsi, 65);
1879 /* min tclk-prepare + tclk-zero = 300ns */
1880 tclk_zero = ns2ddr(dsi, 260);
1882 DSSDBG("ths_prepare %u (%uns), ths_prepare_ths_zero %u (%uns)\n",
1883 ths_prepare, ddr2ns(dsi, ths_prepare),
1884 ths_prepare_ths_zero, ddr2ns(dsi, ths_prepare_ths_zero));
1885 DSSDBG("ths_trail %u (%uns), ths_exit %u (%uns)\n",
1886 ths_trail, ddr2ns(dsi, ths_trail),
1887 ths_exit, ddr2ns(dsi, ths_exit));
1889 DSSDBG("tlpx_half %u (%uns), tclk_trail %u (%uns), "
1890 "tclk_zero %u (%uns)\n",
1891 tlpx_half, ddr2ns(dsi, tlpx_half),
1892 tclk_trail, ddr2ns(dsi, tclk_trail),
1893 tclk_zero, ddr2ns(dsi, tclk_zero));
1894 DSSDBG("tclk_prepare %u (%uns)\n",
1895 tclk_prepare, ddr2ns(dsi, tclk_prepare));
1897 /* program timings */
1899 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG0);
1900 r = FLD_MOD(r, ths_prepare, 31, 24);
1901 r = FLD_MOD(r, ths_prepare_ths_zero, 23, 16);
1902 r = FLD_MOD(r, ths_trail, 15, 8);
1903 r = FLD_MOD(r, ths_exit, 7, 0);
1904 dsi_write_reg(dsi, DSI_DSIPHY_CFG0, r);
1906 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG1);
1907 r = FLD_MOD(r, tlpx_half, 20, 16);
1908 r = FLD_MOD(r, tclk_trail, 15, 8);
1909 r = FLD_MOD(r, tclk_zero, 7, 0);
1911 if (dsi->data->quirks & DSI_QUIRK_PHY_DCC) {
1912 r = FLD_MOD(r, 0, 21, 21); /* DCCEN = disable */
1913 r = FLD_MOD(r, 1, 22, 22); /* CLKINP_DIVBY2EN = enable */
1914 r = FLD_MOD(r, 1, 23, 23); /* CLKINP_SEL = enable */
1917 dsi_write_reg(dsi, DSI_DSIPHY_CFG1, r);
1919 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG2);
1920 r = FLD_MOD(r, tclk_prepare, 7, 0);
1921 dsi_write_reg(dsi, DSI_DSIPHY_CFG2, r);
1924 /* lane masks have lane 0 at lsb. mask_p for positive lines, n for negative */
1925 static void dsi_cio_enable_lane_override(struct dsi_data *dsi,
1926 unsigned int mask_p,
1927 unsigned int mask_n)
1931 u8 lptxscp_start = dsi->num_lanes_supported == 3 ? 22 : 26;
1935 for (i = 0; i < dsi->num_lanes_supported; ++i) {
1936 unsigned int p = dsi->lanes[i].polarity;
1938 if (mask_p & (1 << i))
1939 l |= 1 << (i * 2 + (p ? 0 : 1));
1941 if (mask_n & (1 << i))
1942 l |= 1 << (i * 2 + (p ? 1 : 0));
1946 * Bits in REGLPTXSCPDAT4TO0DXDY:
1954 /* Set the lane override configuration */
1956 /* REGLPTXSCPDAT4TO0DXDY */
1957 REG_FLD_MOD(dsi, DSI_DSIPHY_CFG10, l, lptxscp_start, 17);
1959 /* Enable lane override */
1962 REG_FLD_MOD(dsi, DSI_DSIPHY_CFG10, 1, 27, 27);
1965 static void dsi_cio_disable_lane_override(struct dsi_data *dsi)
1967 /* Disable lane override */
1968 REG_FLD_MOD(dsi, DSI_DSIPHY_CFG10, 0, 27, 27); /* ENLPTXSCPDAT */
1969 /* Reset the lane override configuration */
1970 /* REGLPTXSCPDAT4TO0DXDY */
1971 REG_FLD_MOD(dsi, DSI_DSIPHY_CFG10, 0, 22, 17);
1974 static int dsi_cio_wait_tx_clk_esc_reset(struct dsi_data *dsi)
1977 bool in_use[DSI_MAX_NR_LANES];
1978 static const u8 offsets_old[] = { 28, 27, 26 };
1979 static const u8 offsets_new[] = { 24, 25, 26, 27, 28 };
1982 if (dsi->data->quirks & DSI_QUIRK_REVERSE_TXCLKESC)
1983 offsets = offsets_old;
1985 offsets = offsets_new;
1987 for (i = 0; i < dsi->num_lanes_supported; ++i)
1988 in_use[i] = dsi->lanes[i].function != DSI_LANE_UNUSED;
1995 l = dsi_read_reg(dsi, DSI_DSIPHY_CFG5);
1998 for (i = 0; i < dsi->num_lanes_supported; ++i) {
1999 if (!in_use[i] || (l & (1 << offsets[i])))
2003 if (ok == dsi->num_lanes_supported)
2007 for (i = 0; i < dsi->num_lanes_supported; ++i) {
2008 if (!in_use[i] || (l & (1 << offsets[i])))
2011 DSSERR("CIO TXCLKESC%d domain not coming " \
2012 "out of reset\n", i);
2021 /* return bitmask of enabled lanes, lane0 being the lsb */
2022 static unsigned int dsi_get_lane_mask(struct dsi_data *dsi)
2024 unsigned int mask = 0;
2027 for (i = 0; i < dsi->num_lanes_supported; ++i) {
2028 if (dsi->lanes[i].function != DSI_LANE_UNUSED)
2035 /* OMAP4 CONTROL_DSIPHY */
2036 #define OMAP4_DSIPHY_SYSCON_OFFSET 0x78
2038 #define OMAP4_DSI2_LANEENABLE_SHIFT 29
2039 #define OMAP4_DSI2_LANEENABLE_MASK (0x7 << 29)
2040 #define OMAP4_DSI1_LANEENABLE_SHIFT 24
2041 #define OMAP4_DSI1_LANEENABLE_MASK (0x1f << 24)
2042 #define OMAP4_DSI1_PIPD_SHIFT 19
2043 #define OMAP4_DSI1_PIPD_MASK (0x1f << 19)
2044 #define OMAP4_DSI2_PIPD_SHIFT 14
2045 #define OMAP4_DSI2_PIPD_MASK (0x1f << 14)
2047 static int dsi_omap4_mux_pads(struct dsi_data *dsi, unsigned int lanes)
2049 u32 enable_mask, enable_shift;
2050 u32 pipd_mask, pipd_shift;
2052 if (dsi->module_id == 0) {
2053 enable_mask = OMAP4_DSI1_LANEENABLE_MASK;
2054 enable_shift = OMAP4_DSI1_LANEENABLE_SHIFT;
2055 pipd_mask = OMAP4_DSI1_PIPD_MASK;
2056 pipd_shift = OMAP4_DSI1_PIPD_SHIFT;
2057 } else if (dsi->module_id == 1) {
2058 enable_mask = OMAP4_DSI2_LANEENABLE_MASK;
2059 enable_shift = OMAP4_DSI2_LANEENABLE_SHIFT;
2060 pipd_mask = OMAP4_DSI2_PIPD_MASK;
2061 pipd_shift = OMAP4_DSI2_PIPD_SHIFT;
2066 return regmap_update_bits(dsi->syscon, OMAP4_DSIPHY_SYSCON_OFFSET,
2067 enable_mask | pipd_mask,
2068 (lanes << enable_shift) | (lanes << pipd_shift));
2071 /* OMAP5 CONTROL_DSIPHY */
2073 #define OMAP5_DSIPHY_SYSCON_OFFSET 0x74
2075 #define OMAP5_DSI1_LANEENABLE_SHIFT 24
2076 #define OMAP5_DSI2_LANEENABLE_SHIFT 19
2077 #define OMAP5_DSI_LANEENABLE_MASK 0x1f
2079 static int dsi_omap5_mux_pads(struct dsi_data *dsi, unsigned int lanes)
2083 if (dsi->module_id == 0)
2084 enable_shift = OMAP5_DSI1_LANEENABLE_SHIFT;
2085 else if (dsi->module_id == 1)
2086 enable_shift = OMAP5_DSI2_LANEENABLE_SHIFT;
2090 return regmap_update_bits(dsi->syscon, OMAP5_DSIPHY_SYSCON_OFFSET,
2091 OMAP5_DSI_LANEENABLE_MASK << enable_shift,
2092 lanes << enable_shift);
2095 static int dsi_enable_pads(struct dsi_data *dsi, unsigned int lane_mask)
2097 if (dsi->data->model == DSI_MODEL_OMAP4)
2098 return dsi_omap4_mux_pads(dsi, lane_mask);
2099 if (dsi->data->model == DSI_MODEL_OMAP5)
2100 return dsi_omap5_mux_pads(dsi, lane_mask);
2104 static void dsi_disable_pads(struct dsi_data *dsi)
2106 if (dsi->data->model == DSI_MODEL_OMAP4)
2107 dsi_omap4_mux_pads(dsi, 0);
2108 else if (dsi->data->model == DSI_MODEL_OMAP5)
2109 dsi_omap5_mux_pads(dsi, 0);
2112 static int dsi_cio_init(struct dsi_data *dsi)
2117 DSSDBG("DSI CIO init starts");
2119 r = dsi_enable_pads(dsi, dsi_get_lane_mask(dsi));
2123 dsi_enable_scp_clk(dsi);
2125 /* A dummy read using the SCP interface to any DSIPHY register is
2126 * required after DSIPHY reset to complete the reset of the DSI complex
2128 dsi_read_reg(dsi, DSI_DSIPHY_CFG5);
2130 if (!wait_for_bit_change(dsi, DSI_DSIPHY_CFG5, 30, 1)) {
2131 DSSERR("CIO SCP Clock domain not coming out of reset.\n");
2133 goto err_scp_clk_dom;
2136 r = dsi_set_lane_config(dsi);
2138 goto err_scp_clk_dom;
2140 /* set TX STOP MODE timer to maximum for this operation */
2141 l = dsi_read_reg(dsi, DSI_TIMING1);
2142 l = FLD_MOD(l, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
2143 l = FLD_MOD(l, 1, 14, 14); /* STOP_STATE_X16_IO */
2144 l = FLD_MOD(l, 1, 13, 13); /* STOP_STATE_X4_IO */
2145 l = FLD_MOD(l, 0x1fff, 12, 0); /* STOP_STATE_COUNTER_IO */
2146 dsi_write_reg(dsi, DSI_TIMING1, l);
2148 if (dsi->ulps_enabled) {
2149 unsigned int mask_p;
2152 DSSDBG("manual ulps exit\n");
2154 /* ULPS is exited by Mark-1 state for 1ms, followed by
2155 * stop state. DSS HW cannot do this via the normal
2156 * ULPS exit sequence, as after reset the DSS HW thinks
2157 * that we are not in ULPS mode, and refuses to send the
2158 * sequence. So we need to send the ULPS exit sequence
2159 * manually by setting positive lines high and negative lines
2165 for (i = 0; i < dsi->num_lanes_supported; ++i) {
2166 if (dsi->lanes[i].function == DSI_LANE_UNUSED)
2171 dsi_cio_enable_lane_override(dsi, mask_p, 0);
2174 r = dsi_cio_power(dsi, DSI_COMPLEXIO_POWER_ON);
2178 if (!wait_for_bit_change(dsi, DSI_COMPLEXIO_CFG1, 29, 1)) {
2179 DSSERR("CIO PWR clock domain not coming out of reset.\n");
2181 goto err_cio_pwr_dom;
2184 dsi_if_enable(dsi, true);
2185 dsi_if_enable(dsi, false);
2186 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 1, 20, 20); /* LP_CLK_ENABLE */
2188 r = dsi_cio_wait_tx_clk_esc_reset(dsi);
2190 goto err_tx_clk_esc_rst;
2192 if (dsi->ulps_enabled) {
2193 /* Keep Mark-1 state for 1ms (as per DSI spec) */
2194 ktime_t wait = ns_to_ktime(1000 * 1000);
2195 set_current_state(TASK_UNINTERRUPTIBLE);
2196 schedule_hrtimeout(&wait, HRTIMER_MODE_REL);
2198 /* Disable the override. The lanes should be set to Mark-11
2199 * state by the HW */
2200 dsi_cio_disable_lane_override(dsi);
2203 /* FORCE_TX_STOP_MODE_IO */
2204 REG_FLD_MOD(dsi, DSI_TIMING1, 0, 15, 15);
2206 dsi_cio_timings(dsi);
2208 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
2209 /* DDR_CLK_ALWAYS_ON */
2210 REG_FLD_MOD(dsi, DSI_CLK_CTRL,
2211 dsi->vm_timings.ddr_clk_always_on, 13, 13);
2214 dsi->ulps_enabled = false;
2216 DSSDBG("CIO init done\n");
2221 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 0, 20, 20); /* LP_CLK_ENABLE */
2223 dsi_cio_power(dsi, DSI_COMPLEXIO_POWER_OFF);
2225 if (dsi->ulps_enabled)
2226 dsi_cio_disable_lane_override(dsi);
2228 dsi_disable_scp_clk(dsi);
2229 dsi_disable_pads(dsi);
2233 static void dsi_cio_uninit(struct dsi_data *dsi)
2235 /* DDR_CLK_ALWAYS_ON */
2236 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 0, 13, 13);
2238 dsi_cio_power(dsi, DSI_COMPLEXIO_POWER_OFF);
2239 dsi_disable_scp_clk(dsi);
2240 dsi_disable_pads(dsi);
2243 static void dsi_config_tx_fifo(struct dsi_data *dsi,
2244 enum fifo_size size1, enum fifo_size size2,
2245 enum fifo_size size3, enum fifo_size size4)
2251 dsi->vc[0].tx_fifo_size = size1;
2252 dsi->vc[1].tx_fifo_size = size2;
2253 dsi->vc[2].tx_fifo_size = size3;
2254 dsi->vc[3].tx_fifo_size = size4;
2256 for (i = 0; i < 4; i++) {
2258 int size = dsi->vc[i].tx_fifo_size;
2260 if (add + size > 4) {
2261 DSSERR("Illegal FIFO configuration\n");
2266 v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
2268 /*DSSDBG("TX FIFO vc %d: size %d, add %d\n", i, size, add); */
2272 dsi_write_reg(dsi, DSI_TX_FIFO_VC_SIZE, r);
2275 static void dsi_config_rx_fifo(struct dsi_data *dsi,
2276 enum fifo_size size1, enum fifo_size size2,
2277 enum fifo_size size3, enum fifo_size size4)
2283 dsi->vc[0].rx_fifo_size = size1;
2284 dsi->vc[1].rx_fifo_size = size2;
2285 dsi->vc[2].rx_fifo_size = size3;
2286 dsi->vc[3].rx_fifo_size = size4;
2288 for (i = 0; i < 4; i++) {
2290 int size = dsi->vc[i].rx_fifo_size;
2292 if (add + size > 4) {
2293 DSSERR("Illegal FIFO configuration\n");
2298 v = FLD_VAL(add, 2, 0) | FLD_VAL(size, 7, 4);
2300 /*DSSDBG("RX FIFO vc %d: size %d, add %d\n", i, size, add); */
2304 dsi_write_reg(dsi, DSI_RX_FIFO_VC_SIZE, r);
2307 static int dsi_force_tx_stop_mode_io(struct dsi_data *dsi)
2311 r = dsi_read_reg(dsi, DSI_TIMING1);
2312 r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
2313 dsi_write_reg(dsi, DSI_TIMING1, r);
2315 if (!wait_for_bit_change(dsi, DSI_TIMING1, 15, 0)) {
2316 DSSERR("TX_STOP bit not going down\n");
2323 static bool dsi_vc_is_enabled(struct dsi_data *dsi, int channel)
2325 return REG_GET(dsi, DSI_VC_CTRL(channel), 0, 0);
2328 static void dsi_packet_sent_handler_vp(void *data, u32 mask)
2330 struct dsi_packet_sent_handler_data *vp_data =
2331 (struct dsi_packet_sent_handler_data *) data;
2332 struct dsi_data *dsi = vp_data->dsi;
2333 const int channel = dsi->update_channel;
2334 u8 bit = dsi->te_enabled ? 30 : 31;
2336 if (REG_GET(dsi, DSI_VC_TE(channel), bit, bit) == 0)
2337 complete(vp_data->completion);
2340 static int dsi_sync_vc_vp(struct dsi_data *dsi, int channel)
2342 DECLARE_COMPLETION_ONSTACK(completion);
2343 struct dsi_packet_sent_handler_data vp_data = {
2345 .completion = &completion
2350 bit = dsi->te_enabled ? 30 : 31;
2352 r = dsi_register_isr_vc(dsi, channel, dsi_packet_sent_handler_vp,
2353 &vp_data, DSI_VC_IRQ_PACKET_SENT);
2357 /* Wait for completion only if TE_EN/TE_START is still set */
2358 if (REG_GET(dsi, DSI_VC_TE(channel), bit, bit)) {
2359 if (wait_for_completion_timeout(&completion,
2360 msecs_to_jiffies(10)) == 0) {
2361 DSSERR("Failed to complete previous frame transfer\n");
2367 dsi_unregister_isr_vc(dsi, channel, dsi_packet_sent_handler_vp,
2368 &vp_data, DSI_VC_IRQ_PACKET_SENT);
2372 dsi_unregister_isr_vc(dsi, channel, dsi_packet_sent_handler_vp,
2373 &vp_data, DSI_VC_IRQ_PACKET_SENT);
2378 static void dsi_packet_sent_handler_l4(void *data, u32 mask)
2380 struct dsi_packet_sent_handler_data *l4_data =
2381 (struct dsi_packet_sent_handler_data *) data;
2382 struct dsi_data *dsi = l4_data->dsi;
2383 const int channel = dsi->update_channel;
2385 if (REG_GET(dsi, DSI_VC_CTRL(channel), 5, 5) == 0)
2386 complete(l4_data->completion);
2389 static int dsi_sync_vc_l4(struct dsi_data *dsi, int channel)
2391 DECLARE_COMPLETION_ONSTACK(completion);
2392 struct dsi_packet_sent_handler_data l4_data = {
2394 .completion = &completion
2398 r = dsi_register_isr_vc(dsi, channel, dsi_packet_sent_handler_l4,
2399 &l4_data, DSI_VC_IRQ_PACKET_SENT);
2403 /* Wait for completion only if TX_FIFO_NOT_EMPTY is still set */
2404 if (REG_GET(dsi, DSI_VC_CTRL(channel), 5, 5)) {
2405 if (wait_for_completion_timeout(&completion,
2406 msecs_to_jiffies(10)) == 0) {
2407 DSSERR("Failed to complete previous l4 transfer\n");
2413 dsi_unregister_isr_vc(dsi, channel, dsi_packet_sent_handler_l4,
2414 &l4_data, DSI_VC_IRQ_PACKET_SENT);
2418 dsi_unregister_isr_vc(dsi, channel, dsi_packet_sent_handler_l4,
2419 &l4_data, DSI_VC_IRQ_PACKET_SENT);
2424 static int dsi_sync_vc(struct dsi_data *dsi, int channel)
2426 WARN_ON(!dsi_bus_is_locked(dsi));
2428 WARN_ON(in_interrupt());
2430 if (!dsi_vc_is_enabled(dsi, channel))
2433 switch (dsi->vc[channel].source) {
2434 case DSI_VC_SOURCE_VP:
2435 return dsi_sync_vc_vp(dsi, channel);
2436 case DSI_VC_SOURCE_L4:
2437 return dsi_sync_vc_l4(dsi, channel);
2444 static int dsi_vc_enable(struct dsi_data *dsi, int channel, bool enable)
2446 DSSDBG("dsi_vc_enable channel %d, enable %d\n",
2449 enable = enable ? 1 : 0;
2451 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), enable, 0, 0);
2453 if (!wait_for_bit_change(dsi, DSI_VC_CTRL(channel), 0, enable)) {
2454 DSSERR("Failed to set dsi_vc_enable to %d\n", enable);
2461 static void dsi_vc_initial_config(struct dsi_data *dsi, int channel)
2465 DSSDBG("Initial config of virtual channel %d", channel);
2467 r = dsi_read_reg(dsi, DSI_VC_CTRL(channel));
2469 if (FLD_GET(r, 15, 15)) /* VC_BUSY */
2470 DSSERR("VC(%d) busy when trying to configure it!\n",
2473 r = FLD_MOD(r, 0, 1, 1); /* SOURCE, 0 = L4 */
2474 r = FLD_MOD(r, 0, 2, 2); /* BTA_SHORT_EN */
2475 r = FLD_MOD(r, 0, 3, 3); /* BTA_LONG_EN */
2476 r = FLD_MOD(r, 0, 4, 4); /* MODE, 0 = command */
2477 r = FLD_MOD(r, 1, 7, 7); /* CS_TX_EN */
2478 r = FLD_MOD(r, 1, 8, 8); /* ECC_TX_EN */
2479 r = FLD_MOD(r, 0, 9, 9); /* MODE_SPEED, high speed on/off */
2480 if (dsi->data->quirks & DSI_QUIRK_VC_OCP_WIDTH)
2481 r = FLD_MOD(r, 3, 11, 10); /* OCP_WIDTH = 32 bit */
2483 r = FLD_MOD(r, 4, 29, 27); /* DMA_RX_REQ_NB = no dma */
2484 r = FLD_MOD(r, 4, 23, 21); /* DMA_TX_REQ_NB = no dma */
2486 dsi_write_reg(dsi, DSI_VC_CTRL(channel), r);
2488 dsi->vc[channel].source = DSI_VC_SOURCE_L4;
2491 static int dsi_vc_config_source(struct dsi_data *dsi, int channel,
2492 enum dsi_vc_source source)
2494 if (dsi->vc[channel].source == source)
2497 DSSDBG("Source config of virtual channel %d", channel);
2499 dsi_sync_vc(dsi, channel);
2501 dsi_vc_enable(dsi, channel, 0);
2504 if (!wait_for_bit_change(dsi, DSI_VC_CTRL(channel), 15, 0)) {
2505 DSSERR("vc(%d) busy when trying to config for VP\n", channel);
2509 /* SOURCE, 0 = L4, 1 = video port */
2510 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), source, 1, 1);
2512 /* DCS_CMD_ENABLE */
2513 if (dsi->data->quirks & DSI_QUIRK_DCS_CMD_CONFIG_VC) {
2514 bool enable = source == DSI_VC_SOURCE_VP;
2515 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), enable, 30, 30);
2518 dsi_vc_enable(dsi, channel, 1);
2520 dsi->vc[channel].source = source;
2525 static void dsi_vc_enable_hs(struct omap_dss_device *dssdev, int channel,
2528 struct dsi_data *dsi = to_dsi_data(dssdev);
2530 DSSDBG("dsi_vc_enable_hs(%d, %d)\n", channel, enable);
2532 WARN_ON(!dsi_bus_is_locked(dsi));
2534 dsi_vc_enable(dsi, channel, 0);
2535 dsi_if_enable(dsi, 0);
2537 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), enable, 9, 9);
2539 dsi_vc_enable(dsi, channel, 1);
2540 dsi_if_enable(dsi, 1);
2542 dsi_force_tx_stop_mode_io(dsi);
2544 /* start the DDR clock by sending a NULL packet */
2545 if (dsi->vm_timings.ddr_clk_always_on && enable)
2546 dsi_vc_send_null(dsi, channel);
2549 static void dsi_vc_flush_long_data(struct dsi_data *dsi, int channel)
2551 while (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20)) {
2553 val = dsi_read_reg(dsi, DSI_VC_SHORT_PACKET_HEADER(channel));
2554 DSSDBG("\t\tb1 %#02x b2 %#02x b3 %#02x b4 %#02x\n",
2558 (val >> 24) & 0xff);
2562 static void dsi_show_rx_ack_with_err(u16 err)
2564 DSSERR("\tACK with ERROR (%#x):\n", err);
2566 DSSERR("\t\tSoT Error\n");
2568 DSSERR("\t\tSoT Sync Error\n");
2570 DSSERR("\t\tEoT Sync Error\n");
2572 DSSERR("\t\tEscape Mode Entry Command Error\n");
2574 DSSERR("\t\tLP Transmit Sync Error\n");
2576 DSSERR("\t\tHS Receive Timeout Error\n");
2578 DSSERR("\t\tFalse Control Error\n");
2580 DSSERR("\t\t(reserved7)\n");
2582 DSSERR("\t\tECC Error, single-bit (corrected)\n");
2584 DSSERR("\t\tECC Error, multi-bit (not corrected)\n");
2585 if (err & (1 << 10))
2586 DSSERR("\t\tChecksum Error\n");
2587 if (err & (1 << 11))
2588 DSSERR("\t\tData type not recognized\n");
2589 if (err & (1 << 12))
2590 DSSERR("\t\tInvalid VC ID\n");
2591 if (err & (1 << 13))
2592 DSSERR("\t\tInvalid Transmission Length\n");
2593 if (err & (1 << 14))
2594 DSSERR("\t\t(reserved14)\n");
2595 if (err & (1 << 15))
2596 DSSERR("\t\tDSI Protocol Violation\n");
2599 static u16 dsi_vc_flush_receive_data(struct dsi_data *dsi, int channel)
2601 /* RX_FIFO_NOT_EMPTY */
2602 while (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20)) {
2605 val = dsi_read_reg(dsi, DSI_VC_SHORT_PACKET_HEADER(channel));
2606 DSSERR("\trawval %#08x\n", val);
2607 dt = FLD_GET(val, 5, 0);
2608 if (dt == MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT) {
2609 u16 err = FLD_GET(val, 23, 8);
2610 dsi_show_rx_ack_with_err(err);
2611 } else if (dt == MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE) {
2612 DSSERR("\tDCS short response, 1 byte: %#x\n",
2613 FLD_GET(val, 23, 8));
2614 } else if (dt == MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE) {
2615 DSSERR("\tDCS short response, 2 byte: %#x\n",
2616 FLD_GET(val, 23, 8));
2617 } else if (dt == MIPI_DSI_RX_DCS_LONG_READ_RESPONSE) {
2618 DSSERR("\tDCS long response, len %d\n",
2619 FLD_GET(val, 23, 8));
2620 dsi_vc_flush_long_data(dsi, channel);
2622 DSSERR("\tunknown datatype 0x%02x\n", dt);
2628 static int dsi_vc_send_bta(struct dsi_data *dsi, int channel)
2630 if (dsi->debug_write || dsi->debug_read)
2631 DSSDBG("dsi_vc_send_bta %d\n", channel);
2633 WARN_ON(!dsi_bus_is_locked(dsi));
2635 /* RX_FIFO_NOT_EMPTY */
2636 if (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20)) {
2637 DSSERR("rx fifo not empty when sending BTA, dumping data:\n");
2638 dsi_vc_flush_receive_data(dsi, channel);
2641 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), 1, 6, 6); /* BTA_EN */
2643 /* flush posted write */
2644 dsi_read_reg(dsi, DSI_VC_CTRL(channel));
2649 static int dsi_vc_send_bta_sync(struct omap_dss_device *dssdev, int channel)
2651 struct dsi_data *dsi = to_dsi_data(dssdev);
2652 DECLARE_COMPLETION_ONSTACK(completion);
2656 r = dsi_register_isr_vc(dsi, channel, dsi_completion_handler,
2657 &completion, DSI_VC_IRQ_BTA);
2661 r = dsi_register_isr(dsi, dsi_completion_handler, &completion,
2662 DSI_IRQ_ERROR_MASK);
2666 r = dsi_vc_send_bta(dsi, channel);
2670 if (wait_for_completion_timeout(&completion,
2671 msecs_to_jiffies(500)) == 0) {
2672 DSSERR("Failed to receive BTA\n");
2677 err = dsi_get_errors(dsi);
2679 DSSERR("Error while sending BTA: %x\n", err);
2684 dsi_unregister_isr(dsi, dsi_completion_handler, &completion,
2685 DSI_IRQ_ERROR_MASK);
2687 dsi_unregister_isr_vc(dsi, channel, dsi_completion_handler,
2688 &completion, DSI_VC_IRQ_BTA);
2693 static inline void dsi_vc_write_long_header(struct dsi_data *dsi, int channel,
2694 u8 data_type, u16 len, u8 ecc)
2699 WARN_ON(!dsi_bus_is_locked(dsi));
2701 data_id = data_type | dsi->vc[channel].vc_id << 6;
2703 val = FLD_VAL(data_id, 7, 0) | FLD_VAL(len, 23, 8) |
2704 FLD_VAL(ecc, 31, 24);
2706 dsi_write_reg(dsi, DSI_VC_LONG_PACKET_HEADER(channel), val);
2709 static inline void dsi_vc_write_long_payload(struct dsi_data *dsi, int channel,
2710 u8 b1, u8 b2, u8 b3, u8 b4)
2714 val = b4 << 24 | b3 << 16 | b2 << 8 | b1 << 0;
2716 /* DSSDBG("\twriting %02x, %02x, %02x, %02x (%#010x)\n",
2717 b1, b2, b3, b4, val); */
2719 dsi_write_reg(dsi, DSI_VC_LONG_PACKET_PAYLOAD(channel), val);
2722 static int dsi_vc_send_long(struct dsi_data *dsi, int channel, u8 data_type,
2723 u8 *data, u16 len, u8 ecc)
2731 if (dsi->debug_write)
2732 DSSDBG("dsi_vc_send_long, %d bytes\n", len);
2735 if (dsi->vc[channel].tx_fifo_size * 32 * 4 < len + 4) {
2736 DSSERR("unable to send long packet: packet too long.\n");
2740 dsi_vc_config_source(dsi, channel, DSI_VC_SOURCE_L4);
2742 dsi_vc_write_long_header(dsi, channel, data_type, len, ecc);
2745 for (i = 0; i < len >> 2; i++) {
2746 if (dsi->debug_write)
2747 DSSDBG("\tsending full packet %d\n", i);
2754 dsi_vc_write_long_payload(dsi, channel, b1, b2, b3, b4);
2759 b1 = 0; b2 = 0; b3 = 0;
2761 if (dsi->debug_write)
2762 DSSDBG("\tsending remainder bytes %d\n", i);
2779 dsi_vc_write_long_payload(dsi, channel, b1, b2, b3, 0);
2785 static int dsi_vc_send_short(struct dsi_data *dsi, int channel, u8 data_type,
2791 WARN_ON(!dsi_bus_is_locked(dsi));
2793 if (dsi->debug_write)
2794 DSSDBG("dsi_vc_send_short(ch%d, dt %#x, b1 %#x, b2 %#x)\n",
2796 data_type, data & 0xff, (data >> 8) & 0xff);
2798 dsi_vc_config_source(dsi, channel, DSI_VC_SOURCE_L4);
2800 if (FLD_GET(dsi_read_reg(dsi, DSI_VC_CTRL(channel)), 16, 16)) {
2801 DSSERR("ERROR FIFO FULL, aborting transfer\n");
2805 data_id = data_type | dsi->vc[channel].vc_id << 6;
2807 r = (data_id << 0) | (data << 8) | (ecc << 24);
2809 dsi_write_reg(dsi, DSI_VC_SHORT_PACKET_HEADER(channel), r);
2814 static int dsi_vc_send_null(struct dsi_data *dsi, int channel)
2816 return dsi_vc_send_long(dsi, channel, MIPI_DSI_NULL_PACKET, NULL, 0, 0);
2819 static int dsi_vc_write_nosync_common(struct dsi_data *dsi, int channel,
2821 enum dss_dsi_content_type type)
2826 BUG_ON(type == DSS_DSI_CONTENT_DCS);
2827 r = dsi_vc_send_short(dsi, channel,
2828 MIPI_DSI_GENERIC_SHORT_WRITE_0_PARAM, 0, 0);
2829 } else if (len == 1) {
2830 r = dsi_vc_send_short(dsi, channel,
2831 type == DSS_DSI_CONTENT_GENERIC ?
2832 MIPI_DSI_GENERIC_SHORT_WRITE_1_PARAM :
2833 MIPI_DSI_DCS_SHORT_WRITE, data[0], 0);
2834 } else if (len == 2) {
2835 r = dsi_vc_send_short(dsi, channel,
2836 type == DSS_DSI_CONTENT_GENERIC ?
2837 MIPI_DSI_GENERIC_SHORT_WRITE_2_PARAM :
2838 MIPI_DSI_DCS_SHORT_WRITE_PARAM,
2839 data[0] | (data[1] << 8), 0);
2841 r = dsi_vc_send_long(dsi, channel,
2842 type == DSS_DSI_CONTENT_GENERIC ?
2843 MIPI_DSI_GENERIC_LONG_WRITE :
2844 MIPI_DSI_DCS_LONG_WRITE, data, len, 0);
2850 static int dsi_vc_dcs_write_nosync(struct omap_dss_device *dssdev, int channel,
2853 struct dsi_data *dsi = to_dsi_data(dssdev);
2855 return dsi_vc_write_nosync_common(dsi, channel, data, len,
2856 DSS_DSI_CONTENT_DCS);
2859 static int dsi_vc_generic_write_nosync(struct omap_dss_device *dssdev, int channel,
2862 struct dsi_data *dsi = to_dsi_data(dssdev);
2864 return dsi_vc_write_nosync_common(dsi, channel, data, len,
2865 DSS_DSI_CONTENT_GENERIC);
2868 static int dsi_vc_write_common(struct omap_dss_device *dssdev,
2869 int channel, u8 *data, int len,
2870 enum dss_dsi_content_type type)
2872 struct dsi_data *dsi = to_dsi_data(dssdev);
2875 r = dsi_vc_write_nosync_common(dsi, channel, data, len, type);
2879 r = dsi_vc_send_bta_sync(dssdev, channel);
2883 /* RX_FIFO_NOT_EMPTY */
2884 if (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20)) {
2885 DSSERR("rx fifo not empty after write, dumping data:\n");
2886 dsi_vc_flush_receive_data(dsi, channel);
2893 DSSERR("dsi_vc_write_common(ch %d, cmd 0x%02x, len %d) failed\n",
2894 channel, data[0], len);
2898 static int dsi_vc_dcs_write(struct omap_dss_device *dssdev, int channel, u8 *data,
2901 return dsi_vc_write_common(dssdev, channel, data, len,
2902 DSS_DSI_CONTENT_DCS);
2905 static int dsi_vc_generic_write(struct omap_dss_device *dssdev, int channel, u8 *data,
2908 return dsi_vc_write_common(dssdev, channel, data, len,
2909 DSS_DSI_CONTENT_GENERIC);
2912 static int dsi_vc_dcs_send_read_request(struct dsi_data *dsi, int channel,
2917 if (dsi->debug_read)
2918 DSSDBG("dsi_vc_dcs_send_read_request(ch%d, dcs_cmd %x)\n",
2921 r = dsi_vc_send_short(dsi, channel, MIPI_DSI_DCS_READ, dcs_cmd, 0);
2923 DSSERR("dsi_vc_dcs_send_read_request(ch %d, cmd 0x%02x)"
2924 " failed\n", channel, dcs_cmd);
2931 static int dsi_vc_generic_send_read_request(struct dsi_data *dsi, int channel,
2932 u8 *reqdata, int reqlen)
2938 if (dsi->debug_read)
2939 DSSDBG("dsi_vc_generic_send_read_request(ch %d, reqlen %d)\n",
2943 data_type = MIPI_DSI_GENERIC_READ_REQUEST_0_PARAM;
2945 } else if (reqlen == 1) {
2946 data_type = MIPI_DSI_GENERIC_READ_REQUEST_1_PARAM;
2948 } else if (reqlen == 2) {
2949 data_type = MIPI_DSI_GENERIC_READ_REQUEST_2_PARAM;
2950 data = reqdata[0] | (reqdata[1] << 8);
2956 r = dsi_vc_send_short(dsi, channel, data_type, data, 0);
2958 DSSERR("dsi_vc_generic_send_read_request(ch %d, reqlen %d)"
2959 " failed\n", channel, reqlen);
2966 static int dsi_vc_read_rx_fifo(struct dsi_data *dsi, int channel, u8 *buf,
2967 int buflen, enum dss_dsi_content_type type)
2973 /* RX_FIFO_NOT_EMPTY */
2974 if (REG_GET(dsi, DSI_VC_CTRL(channel), 20, 20) == 0) {
2975 DSSERR("RX fifo empty when trying to read.\n");
2980 val = dsi_read_reg(dsi, DSI_VC_SHORT_PACKET_HEADER(channel));
2981 if (dsi->debug_read)
2982 DSSDBG("\theader: %08x\n", val);
2983 dt = FLD_GET(val, 5, 0);
2984 if (dt == MIPI_DSI_RX_ACKNOWLEDGE_AND_ERROR_REPORT) {
2985 u16 err = FLD_GET(val, 23, 8);
2986 dsi_show_rx_ack_with_err(err);
2990 } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ?
2991 MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_1BYTE :
2992 MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_1BYTE)) {
2993 u8 data = FLD_GET(val, 15, 8);
2994 if (dsi->debug_read)
2995 DSSDBG("\t%s short response, 1 byte: %02x\n",
2996 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" :
3007 } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ?
3008 MIPI_DSI_RX_GENERIC_SHORT_READ_RESPONSE_2BYTE :
3009 MIPI_DSI_RX_DCS_SHORT_READ_RESPONSE_2BYTE)) {
3010 u16 data = FLD_GET(val, 23, 8);
3011 if (dsi->debug_read)
3012 DSSDBG("\t%s short response, 2 byte: %04x\n",
3013 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" :
3021 buf[0] = data & 0xff;
3022 buf[1] = (data >> 8) & 0xff;
3025 } else if (dt == (type == DSS_DSI_CONTENT_GENERIC ?
3026 MIPI_DSI_RX_GENERIC_LONG_READ_RESPONSE :
3027 MIPI_DSI_RX_DCS_LONG_READ_RESPONSE)) {
3029 int len = FLD_GET(val, 23, 8);
3030 if (dsi->debug_read)
3031 DSSDBG("\t%s long response, len %d\n",
3032 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" :
3040 /* two byte checksum ends the packet, not included in len */
3041 for (w = 0; w < len + 2;) {
3043 val = dsi_read_reg(dsi,
3044 DSI_VC_SHORT_PACKET_HEADER(channel));
3045 if (dsi->debug_read)
3046 DSSDBG("\t\t%02x %02x %02x %02x\n",
3050 (val >> 24) & 0xff);
3052 for (b = 0; b < 4; ++b) {
3054 buf[w] = (val >> (b * 8)) & 0xff;
3055 /* we discard the 2 byte checksum */
3062 DSSERR("\tunknown datatype 0x%02x\n", dt);
3068 DSSERR("dsi_vc_read_rx_fifo(ch %d type %s) failed\n", channel,
3069 type == DSS_DSI_CONTENT_GENERIC ? "GENERIC" : "DCS");
3074 static int dsi_vc_dcs_read(struct omap_dss_device *dssdev, int channel, u8 dcs_cmd,
3075 u8 *buf, int buflen)
3077 struct dsi_data *dsi = to_dsi_data(dssdev);
3080 r = dsi_vc_dcs_send_read_request(dsi, channel, dcs_cmd);
3084 r = dsi_vc_send_bta_sync(dssdev, channel);
3088 r = dsi_vc_read_rx_fifo(dsi, channel, buf, buflen,
3089 DSS_DSI_CONTENT_DCS);
3100 DSSERR("dsi_vc_dcs_read(ch %d, cmd 0x%02x) failed\n", channel, dcs_cmd);
3104 static int dsi_vc_generic_read(struct omap_dss_device *dssdev, int channel,
3105 u8 *reqdata, int reqlen, u8 *buf, int buflen)
3107 struct dsi_data *dsi = to_dsi_data(dssdev);
3110 r = dsi_vc_generic_send_read_request(dsi, channel, reqdata, reqlen);
3114 r = dsi_vc_send_bta_sync(dssdev, channel);
3118 r = dsi_vc_read_rx_fifo(dsi, channel, buf, buflen,
3119 DSS_DSI_CONTENT_GENERIC);
3131 static int dsi_vc_set_max_rx_packet_size(struct omap_dss_device *dssdev, int channel,
3134 struct dsi_data *dsi = to_dsi_data(dssdev);
3136 return dsi_vc_send_short(dsi, channel,
3137 MIPI_DSI_SET_MAXIMUM_RETURN_PACKET_SIZE, len, 0);
3140 static int dsi_enter_ulps(struct dsi_data *dsi)
3142 DECLARE_COMPLETION_ONSTACK(completion);
3146 DSSDBG("Entering ULPS");
3148 WARN_ON(!dsi_bus_is_locked(dsi));
3150 WARN_ON(dsi->ulps_enabled);
3152 if (dsi->ulps_enabled)
3155 /* DDR_CLK_ALWAYS_ON */
3156 if (REG_GET(dsi, DSI_CLK_CTRL, 13, 13)) {
3157 dsi_if_enable(dsi, 0);
3158 REG_FLD_MOD(dsi, DSI_CLK_CTRL, 0, 13, 13);
3159 dsi_if_enable(dsi, 1);
3162 dsi_sync_vc(dsi, 0);
3163 dsi_sync_vc(dsi, 1);
3164 dsi_sync_vc(dsi, 2);
3165 dsi_sync_vc(dsi, 3);
3167 dsi_force_tx_stop_mode_io(dsi);
3169 dsi_vc_enable(dsi, 0, false);
3170 dsi_vc_enable(dsi, 1, false);
3171 dsi_vc_enable(dsi, 2, false);
3172 dsi_vc_enable(dsi, 3, false);
3174 if (REG_GET(dsi, DSI_COMPLEXIO_CFG2, 16, 16)) { /* HS_BUSY */
3175 DSSERR("HS busy when enabling ULPS\n");
3179 if (REG_GET(dsi, DSI_COMPLEXIO_CFG2, 17, 17)) { /* LP_BUSY */
3180 DSSERR("LP busy when enabling ULPS\n");
3184 r = dsi_register_isr_cio(dsi, dsi_completion_handler, &completion,
3185 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3191 for (i = 0; i < dsi->num_lanes_supported; ++i) {
3192 if (dsi->lanes[i].function == DSI_LANE_UNUSED)
3196 /* Assert TxRequestEsc for data lanes and TxUlpsClk for clk lane */
3197 /* LANEx_ULPS_SIG2 */
3198 REG_FLD_MOD(dsi, DSI_COMPLEXIO_CFG2, mask, 9, 5);
3200 /* flush posted write and wait for SCP interface to finish the write */
3201 dsi_read_reg(dsi, DSI_COMPLEXIO_CFG2);
3203 if (wait_for_completion_timeout(&completion,
3204 msecs_to_jiffies(1000)) == 0) {
3205 DSSERR("ULPS enable timeout\n");
3210 dsi_unregister_isr_cio(dsi, dsi_completion_handler, &completion,
3211 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3213 /* Reset LANEx_ULPS_SIG2 */
3214 REG_FLD_MOD(dsi, DSI_COMPLEXIO_CFG2, 0, 9, 5);
3216 /* flush posted write and wait for SCP interface to finish the write */
3217 dsi_read_reg(dsi, DSI_COMPLEXIO_CFG2);
3219 dsi_cio_power(dsi, DSI_COMPLEXIO_POWER_ULPS);
3221 dsi_if_enable(dsi, false);
3223 dsi->ulps_enabled = true;
3228 dsi_unregister_isr_cio(dsi, dsi_completion_handler, &completion,
3229 DSI_CIO_IRQ_ULPSACTIVENOT_ALL0);
3233 static void dsi_set_lp_rx_timeout(struct dsi_data *dsi, unsigned int ticks,
3237 unsigned long total_ticks;
3240 BUG_ON(ticks > 0x1fff);
3242 /* ticks in DSI_FCK */
3243 fck = dsi_fclk_rate(dsi);
3245 r = dsi_read_reg(dsi, DSI_TIMING2);
3246 r = FLD_MOD(r, 1, 15, 15); /* LP_RX_TO */
3247 r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* LP_RX_TO_X16 */
3248 r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* LP_RX_TO_X4 */
3249 r = FLD_MOD(r, ticks, 12, 0); /* LP_RX_COUNTER */
3250 dsi_write_reg(dsi, DSI_TIMING2, r);
3252 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3254 DSSDBG("LP_RX_TO %lu ticks (%#x%s%s) = %lu ns\n",
3256 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3257 (total_ticks * 1000) / (fck / 1000 / 1000));
3260 static void dsi_set_ta_timeout(struct dsi_data *dsi, unsigned int ticks,
3264 unsigned long total_ticks;
3267 BUG_ON(ticks > 0x1fff);
3269 /* ticks in DSI_FCK */
3270 fck = dsi_fclk_rate(dsi);
3272 r = dsi_read_reg(dsi, DSI_TIMING1);
3273 r = FLD_MOD(r, 1, 31, 31); /* TA_TO */
3274 r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* TA_TO_X16 */
3275 r = FLD_MOD(r, x8 ? 1 : 0, 29, 29); /* TA_TO_X8 */
3276 r = FLD_MOD(r, ticks, 28, 16); /* TA_TO_COUNTER */
3277 dsi_write_reg(dsi, DSI_TIMING1, r);
3279 total_ticks = ticks * (x16 ? 16 : 1) * (x8 ? 8 : 1);
3281 DSSDBG("TA_TO %lu ticks (%#x%s%s) = %lu ns\n",
3283 ticks, x8 ? " x8" : "", x16 ? " x16" : "",
3284 (total_ticks * 1000) / (fck / 1000 / 1000));
3287 static void dsi_set_stop_state_counter(struct dsi_data *dsi, unsigned int ticks,
3291 unsigned long total_ticks;
3294 BUG_ON(ticks > 0x1fff);
3296 /* ticks in DSI_FCK */
3297 fck = dsi_fclk_rate(dsi);
3299 r = dsi_read_reg(dsi, DSI_TIMING1);
3300 r = FLD_MOD(r, 1, 15, 15); /* FORCE_TX_STOP_MODE_IO */
3301 r = FLD_MOD(r, x16 ? 1 : 0, 14, 14); /* STOP_STATE_X16_IO */
3302 r = FLD_MOD(r, x4 ? 1 : 0, 13, 13); /* STOP_STATE_X4_IO */
3303 r = FLD_MOD(r, ticks, 12, 0); /* STOP_STATE_COUNTER_IO */
3304 dsi_write_reg(dsi, DSI_TIMING1, r);
3306 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3308 DSSDBG("STOP_STATE_COUNTER %lu ticks (%#x%s%s) = %lu ns\n",
3310 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3311 (total_ticks * 1000) / (fck / 1000 / 1000));
3314 static void dsi_set_hs_tx_timeout(struct dsi_data *dsi, unsigned int ticks,
3318 unsigned long total_ticks;
3321 BUG_ON(ticks > 0x1fff);
3323 /* ticks in TxByteClkHS */
3324 fck = dsi_get_txbyteclkhs(dsi);
3326 r = dsi_read_reg(dsi, DSI_TIMING2);
3327 r = FLD_MOD(r, 1, 31, 31); /* HS_TX_TO */
3328 r = FLD_MOD(r, x16 ? 1 : 0, 30, 30); /* HS_TX_TO_X16 */
3329 r = FLD_MOD(r, x4 ? 1 : 0, 29, 29); /* HS_TX_TO_X8 (4 really) */
3330 r = FLD_MOD(r, ticks, 28, 16); /* HS_TX_TO_COUNTER */
3331 dsi_write_reg(dsi, DSI_TIMING2, r);
3333 total_ticks = ticks * (x16 ? 16 : 1) * (x4 ? 4 : 1);
3335 DSSDBG("HS_TX_TO %lu ticks (%#x%s%s) = %lu ns\n",
3337 ticks, x4 ? " x4" : "", x16 ? " x16" : "",
3338 (total_ticks * 1000) / (fck / 1000 / 1000));
3341 static void dsi_config_vp_num_line_buffers(struct dsi_data *dsi)
3343 int num_line_buffers;
3345 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3346 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
3347 struct videomode *vm = &dsi->vm;
3349 * Don't use line buffers if width is greater than the video
3350 * port's line buffer size
3352 if (dsi->line_buffer_size <= vm->hactive * bpp / 8)
3353 num_line_buffers = 0;
3355 num_line_buffers = 2;
3357 /* Use maximum number of line buffers in command mode */
3358 num_line_buffers = 2;
3362 REG_FLD_MOD(dsi, DSI_CTRL, num_line_buffers, 13, 12);
3365 static void dsi_config_vp_sync_events(struct dsi_data *dsi)
3370 if (dsi->vm_timings.trans_mode == OMAP_DSS_DSI_PULSE_MODE)
3375 r = dsi_read_reg(dsi, DSI_CTRL);
3376 r = FLD_MOD(r, 1, 9, 9); /* VP_DE_POL */
3377 r = FLD_MOD(r, 1, 10, 10); /* VP_HSYNC_POL */
3378 r = FLD_MOD(r, 1, 11, 11); /* VP_VSYNC_POL */
3379 r = FLD_MOD(r, 1, 15, 15); /* VP_VSYNC_START */
3380 r = FLD_MOD(r, sync_end, 16, 16); /* VP_VSYNC_END */
3381 r = FLD_MOD(r, 1, 17, 17); /* VP_HSYNC_START */
3382 r = FLD_MOD(r, sync_end, 18, 18); /* VP_HSYNC_END */
3383 dsi_write_reg(dsi, DSI_CTRL, r);
3386 static void dsi_config_blanking_modes(struct dsi_data *dsi)
3388 int blanking_mode = dsi->vm_timings.blanking_mode;
3389 int hfp_blanking_mode = dsi->vm_timings.hfp_blanking_mode;
3390 int hbp_blanking_mode = dsi->vm_timings.hbp_blanking_mode;
3391 int hsa_blanking_mode = dsi->vm_timings.hsa_blanking_mode;
3395 * 0 = TX FIFO packets sent or LPS in corresponding blanking periods
3396 * 1 = Long blanking packets are sent in corresponding blanking periods
3398 r = dsi_read_reg(dsi, DSI_CTRL);
3399 r = FLD_MOD(r, blanking_mode, 20, 20); /* BLANKING_MODE */
3400 r = FLD_MOD(r, hfp_blanking_mode, 21, 21); /* HFP_BLANKING */
3401 r = FLD_MOD(r, hbp_blanking_mode, 22, 22); /* HBP_BLANKING */
3402 r = FLD_MOD(r, hsa_blanking_mode, 23, 23); /* HSA_BLANKING */
3403 dsi_write_reg(dsi, DSI_CTRL, r);
3407 * According to section 'HS Command Mode Interleaving' in OMAP TRM, Scenario 3
3408 * results in maximum transition time for data and clock lanes to enter and
3409 * exit HS mode. Hence, this is the scenario where the least amount of command
3410 * mode data can be interleaved. We program the minimum amount of TXBYTECLKHS
3411 * clock cycles that can be used to interleave command mode data in HS so that
3412 * all scenarios are satisfied.
3414 static int dsi_compute_interleave_hs(int blank, bool ddr_alwon, int enter_hs,
3415 int exit_hs, int exiths_clk, int ddr_pre, int ddr_post)
3420 * If DDR_CLK_ALWAYS_ON is set, we need to consider HS mode transition
3421 * time of data lanes only, if it isn't set, we need to consider HS
3422 * transition time of both data and clock lanes. HS transition time
3423 * of Scenario 3 is considered.
3426 transition = enter_hs + exit_hs + max(enter_hs, 2) + 1;
3429 trans1 = ddr_pre + enter_hs + exit_hs + max(enter_hs, 2) + 1;
3430 trans2 = ddr_pre + enter_hs + exiths_clk + ddr_post + ddr_pre +
3432 transition = max(trans1, trans2);
3435 return blank > transition ? blank - transition : 0;
3439 * According to section 'LP Command Mode Interleaving' in OMAP TRM, Scenario 1
3440 * results in maximum transition time for data lanes to enter and exit LP mode.
3441 * Hence, this is the scenario where the least amount of command mode data can
3442 * be interleaved. We program the minimum amount of bytes that can be
3443 * interleaved in LP so that all scenarios are satisfied.
3445 static int dsi_compute_interleave_lp(int blank, int enter_hs, int exit_hs,
3446 int lp_clk_div, int tdsi_fclk)
3448 int trans_lp; /* time required for a LP transition, in TXBYTECLKHS */
3449 int tlp_avail; /* time left for interleaving commands, in CLKIN4DDR */
3450 int ttxclkesc; /* period of LP transmit escape clock, in CLKIN4DDR */
3451 int thsbyte_clk = 16; /* Period of TXBYTECLKHS clock, in CLKIN4DDR */
3452 int lp_inter; /* cmd mode data that can be interleaved, in bytes */
3454 /* maximum LP transition time according to Scenario 1 */
3455 trans_lp = exit_hs + max(enter_hs, 2) + 1;
3457 /* CLKIN4DDR = 16 * TXBYTECLKHS */
3458 tlp_avail = thsbyte_clk * (blank - trans_lp);
3460 ttxclkesc = tdsi_fclk * lp_clk_div;
3462 lp_inter = ((tlp_avail - 8 * thsbyte_clk - 5 * tdsi_fclk) / ttxclkesc -
3465 return max(lp_inter, 0);
3468 static void dsi_config_cmd_mode_interleaving(struct dsi_data *dsi)
3471 int hfp_blanking_mode, hbp_blanking_mode, hsa_blanking_mode;
3472 int hsa, hfp, hbp, width_bytes, bllp, lp_clk_div;
3473 int ddr_clk_pre, ddr_clk_post, enter_hs_mode_lat, exit_hs_mode_lat;
3474 int tclk_trail, ths_exit, exiths_clk;
3476 struct videomode *vm = &dsi->vm;
3477 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
3478 int ndl = dsi->num_lanes_used - 1;
3479 int dsi_fclk_hsdiv = dsi->user_dsi_cinfo.mX[HSDIV_DSI] + 1;
3480 int hsa_interleave_hs = 0, hsa_interleave_lp = 0;
3481 int hfp_interleave_hs = 0, hfp_interleave_lp = 0;
3482 int hbp_interleave_hs = 0, hbp_interleave_lp = 0;
3483 int bl_interleave_hs = 0, bl_interleave_lp = 0;
3486 r = dsi_read_reg(dsi, DSI_CTRL);
3487 blanking_mode = FLD_GET(r, 20, 20);
3488 hfp_blanking_mode = FLD_GET(r, 21, 21);
3489 hbp_blanking_mode = FLD_GET(r, 22, 22);
3490 hsa_blanking_mode = FLD_GET(r, 23, 23);
3492 r = dsi_read_reg(dsi, DSI_VM_TIMING1);
3493 hbp = FLD_GET(r, 11, 0);
3494 hfp = FLD_GET(r, 23, 12);
3495 hsa = FLD_GET(r, 31, 24);
3497 r = dsi_read_reg(dsi, DSI_CLK_TIMING);
3498 ddr_clk_post = FLD_GET(r, 7, 0);
3499 ddr_clk_pre = FLD_GET(r, 15, 8);
3501 r = dsi_read_reg(dsi, DSI_VM_TIMING7);
3502 exit_hs_mode_lat = FLD_GET(r, 15, 0);
3503 enter_hs_mode_lat = FLD_GET(r, 31, 16);
3505 r = dsi_read_reg(dsi, DSI_CLK_CTRL);
3506 lp_clk_div = FLD_GET(r, 12, 0);
3507 ddr_alwon = FLD_GET(r, 13, 13);
3509 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG0);
3510 ths_exit = FLD_GET(r, 7, 0);
3512 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG1);
3513 tclk_trail = FLD_GET(r, 15, 8);
3515 exiths_clk = ths_exit + tclk_trail;
3517 width_bytes = DIV_ROUND_UP(vm->hactive * bpp, 8);
3518 bllp = hbp + hfp + hsa + DIV_ROUND_UP(width_bytes + 6, ndl);
3520 if (!hsa_blanking_mode) {
3521 hsa_interleave_hs = dsi_compute_interleave_hs(hsa, ddr_alwon,
3522 enter_hs_mode_lat, exit_hs_mode_lat,
3523 exiths_clk, ddr_clk_pre, ddr_clk_post);
3524 hsa_interleave_lp = dsi_compute_interleave_lp(hsa,
3525 enter_hs_mode_lat, exit_hs_mode_lat,
3526 lp_clk_div, dsi_fclk_hsdiv);
3529 if (!hfp_blanking_mode) {
3530 hfp_interleave_hs = dsi_compute_interleave_hs(hfp, ddr_alwon,
3531 enter_hs_mode_lat, exit_hs_mode_lat,
3532 exiths_clk, ddr_clk_pre, ddr_clk_post);
3533 hfp_interleave_lp = dsi_compute_interleave_lp(hfp,
3534 enter_hs_mode_lat, exit_hs_mode_lat,
3535 lp_clk_div, dsi_fclk_hsdiv);
3538 if (!hbp_blanking_mode) {
3539 hbp_interleave_hs = dsi_compute_interleave_hs(hbp, ddr_alwon,
3540 enter_hs_mode_lat, exit_hs_mode_lat,
3541 exiths_clk, ddr_clk_pre, ddr_clk_post);
3543 hbp_interleave_lp = dsi_compute_interleave_lp(hbp,
3544 enter_hs_mode_lat, exit_hs_mode_lat,
3545 lp_clk_div, dsi_fclk_hsdiv);
3548 if (!blanking_mode) {
3549 bl_interleave_hs = dsi_compute_interleave_hs(bllp, ddr_alwon,
3550 enter_hs_mode_lat, exit_hs_mode_lat,
3551 exiths_clk, ddr_clk_pre, ddr_clk_post);
3553 bl_interleave_lp = dsi_compute_interleave_lp(bllp,
3554 enter_hs_mode_lat, exit_hs_mode_lat,
3555 lp_clk_div, dsi_fclk_hsdiv);
3558 DSSDBG("DSI HS interleaving(TXBYTECLKHS) HSA %d, HFP %d, HBP %d, BLLP %d\n",
3559 hsa_interleave_hs, hfp_interleave_hs, hbp_interleave_hs,
3562 DSSDBG("DSI LP interleaving(bytes) HSA %d, HFP %d, HBP %d, BLLP %d\n",
3563 hsa_interleave_lp, hfp_interleave_lp, hbp_interleave_lp,
3566 r = dsi_read_reg(dsi, DSI_VM_TIMING4);
3567 r = FLD_MOD(r, hsa_interleave_hs, 23, 16);
3568 r = FLD_MOD(r, hfp_interleave_hs, 15, 8);
3569 r = FLD_MOD(r, hbp_interleave_hs, 7, 0);
3570 dsi_write_reg(dsi, DSI_VM_TIMING4, r);
3572 r = dsi_read_reg(dsi, DSI_VM_TIMING5);
3573 r = FLD_MOD(r, hsa_interleave_lp, 23, 16);
3574 r = FLD_MOD(r, hfp_interleave_lp, 15, 8);
3575 r = FLD_MOD(r, hbp_interleave_lp, 7, 0);
3576 dsi_write_reg(dsi, DSI_VM_TIMING5, r);
3578 r = dsi_read_reg(dsi, DSI_VM_TIMING6);
3579 r = FLD_MOD(r, bl_interleave_hs, 31, 15);
3580 r = FLD_MOD(r, bl_interleave_lp, 16, 0);
3581 dsi_write_reg(dsi, DSI_VM_TIMING6, r);
3584 static int dsi_proto_config(struct dsi_data *dsi)
3589 dsi_config_tx_fifo(dsi, DSI_FIFO_SIZE_32,
3594 dsi_config_rx_fifo(dsi, DSI_FIFO_SIZE_32,
3599 /* XXX what values for the timeouts? */
3600 dsi_set_stop_state_counter(dsi, 0x1000, false, false);
3601 dsi_set_ta_timeout(dsi, 0x1fff, true, true);
3602 dsi_set_lp_rx_timeout(dsi, 0x1fff, true, true);
3603 dsi_set_hs_tx_timeout(dsi, 0x1fff, true, true);
3605 switch (dsi_get_pixel_size(dsi->pix_fmt)) {
3620 r = dsi_read_reg(dsi, DSI_CTRL);
3621 r = FLD_MOD(r, 1, 1, 1); /* CS_RX_EN */
3622 r = FLD_MOD(r, 1, 2, 2); /* ECC_RX_EN */
3623 r = FLD_MOD(r, 1, 3, 3); /* TX_FIFO_ARBITRATION */
3624 r = FLD_MOD(r, 1, 4, 4); /* VP_CLK_RATIO, always 1, see errata*/
3625 r = FLD_MOD(r, buswidth, 7, 6); /* VP_DATA_BUS_WIDTH */
3626 r = FLD_MOD(r, 0, 8, 8); /* VP_CLK_POL */
3627 r = FLD_MOD(r, 1, 14, 14); /* TRIGGER_RESET_MODE */
3628 r = FLD_MOD(r, 1, 19, 19); /* EOT_ENABLE */
3629 if (!(dsi->data->quirks & DSI_QUIRK_DCS_CMD_CONFIG_VC)) {
3630 r = FLD_MOD(r, 1, 24, 24); /* DCS_CMD_ENABLE */
3631 /* DCS_CMD_CODE, 1=start, 0=continue */
3632 r = FLD_MOD(r, 0, 25, 25);
3635 dsi_write_reg(dsi, DSI_CTRL, r);
3637 dsi_config_vp_num_line_buffers(dsi);
3639 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3640 dsi_config_vp_sync_events(dsi);
3641 dsi_config_blanking_modes(dsi);
3642 dsi_config_cmd_mode_interleaving(dsi);
3645 dsi_vc_initial_config(dsi, 0);
3646 dsi_vc_initial_config(dsi, 1);
3647 dsi_vc_initial_config(dsi, 2);
3648 dsi_vc_initial_config(dsi, 3);
3653 static void dsi_proto_timings(struct dsi_data *dsi)
3655 unsigned int tlpx, tclk_zero, tclk_prepare, tclk_trail;
3656 unsigned int tclk_pre, tclk_post;
3657 unsigned int ths_prepare, ths_prepare_ths_zero, ths_zero;
3658 unsigned int ths_trail, ths_exit;
3659 unsigned int ddr_clk_pre, ddr_clk_post;
3660 unsigned int enter_hs_mode_lat, exit_hs_mode_lat;
3661 unsigned int ths_eot;
3662 int ndl = dsi->num_lanes_used - 1;
3665 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG0);
3666 ths_prepare = FLD_GET(r, 31, 24);
3667 ths_prepare_ths_zero = FLD_GET(r, 23, 16);
3668 ths_zero = ths_prepare_ths_zero - ths_prepare;
3669 ths_trail = FLD_GET(r, 15, 8);
3670 ths_exit = FLD_GET(r, 7, 0);
3672 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG1);
3673 tlpx = FLD_GET(r, 20, 16) * 2;
3674 tclk_trail = FLD_GET(r, 15, 8);
3675 tclk_zero = FLD_GET(r, 7, 0);
3677 r = dsi_read_reg(dsi, DSI_DSIPHY_CFG2);
3678 tclk_prepare = FLD_GET(r, 7, 0);
3682 /* min 60ns + 52*UI */
3683 tclk_post = ns2ddr(dsi, 60) + 26;
3685 ths_eot = DIV_ROUND_UP(4, ndl);
3687 ddr_clk_pre = DIV_ROUND_UP(tclk_pre + tlpx + tclk_zero + tclk_prepare,
3689 ddr_clk_post = DIV_ROUND_UP(tclk_post + ths_trail, 4) + ths_eot;
3691 BUG_ON(ddr_clk_pre == 0 || ddr_clk_pre > 255);
3692 BUG_ON(ddr_clk_post == 0 || ddr_clk_post > 255);
3694 r = dsi_read_reg(dsi, DSI_CLK_TIMING);
3695 r = FLD_MOD(r, ddr_clk_pre, 15, 8);
3696 r = FLD_MOD(r, ddr_clk_post, 7, 0);
3697 dsi_write_reg(dsi, DSI_CLK_TIMING, r);
3699 DSSDBG("ddr_clk_pre %u, ddr_clk_post %u\n",
3703 enter_hs_mode_lat = 1 + DIV_ROUND_UP(tlpx, 4) +
3704 DIV_ROUND_UP(ths_prepare, 4) +
3705 DIV_ROUND_UP(ths_zero + 3, 4);
3707 exit_hs_mode_lat = DIV_ROUND_UP(ths_trail + ths_exit, 4) + 1 + ths_eot;
3709 r = FLD_VAL(enter_hs_mode_lat, 31, 16) |
3710 FLD_VAL(exit_hs_mode_lat, 15, 0);
3711 dsi_write_reg(dsi, DSI_VM_TIMING7, r);
3713 DSSDBG("enter_hs_mode_lat %u, exit_hs_mode_lat %u\n",
3714 enter_hs_mode_lat, exit_hs_mode_lat);
3716 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3717 /* TODO: Implement a video mode check_timings function */
3718 int hsa = dsi->vm_timings.hsa;
3719 int hfp = dsi->vm_timings.hfp;
3720 int hbp = dsi->vm_timings.hbp;
3721 int vsa = dsi->vm_timings.vsa;
3722 int vfp = dsi->vm_timings.vfp;
3723 int vbp = dsi->vm_timings.vbp;
3724 int window_sync = dsi->vm_timings.window_sync;
3726 struct videomode *vm = &dsi->vm;
3727 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
3728 int tl, t_he, width_bytes;
3730 hsync_end = dsi->vm_timings.trans_mode == OMAP_DSS_DSI_PULSE_MODE;
3732 ((hsa == 0 && ndl == 3) ? 1 : DIV_ROUND_UP(4, ndl)) : 0;
3734 width_bytes = DIV_ROUND_UP(vm->hactive * bpp, 8);
3736 /* TL = t_HS + HSA + t_HE + HFP + ceil((WC + 6) / NDL) + HBP */
3737 tl = DIV_ROUND_UP(4, ndl) + (hsync_end ? hsa : 0) + t_he + hfp +
3738 DIV_ROUND_UP(width_bytes + 6, ndl) + hbp;
3740 DSSDBG("HBP: %d, HFP: %d, HSA: %d, TL: %d TXBYTECLKHS\n", hbp,
3741 hfp, hsync_end ? hsa : 0, tl);
3742 DSSDBG("VBP: %d, VFP: %d, VSA: %d, VACT: %d lines\n", vbp, vfp,
3745 r = dsi_read_reg(dsi, DSI_VM_TIMING1);
3746 r = FLD_MOD(r, hbp, 11, 0); /* HBP */
3747 r = FLD_MOD(r, hfp, 23, 12); /* HFP */
3748 r = FLD_MOD(r, hsync_end ? hsa : 0, 31, 24); /* HSA */
3749 dsi_write_reg(dsi, DSI_VM_TIMING1, r);
3751 r = dsi_read_reg(dsi, DSI_VM_TIMING2);
3752 r = FLD_MOD(r, vbp, 7, 0); /* VBP */
3753 r = FLD_MOD(r, vfp, 15, 8); /* VFP */
3754 r = FLD_MOD(r, vsa, 23, 16); /* VSA */
3755 r = FLD_MOD(r, window_sync, 27, 24); /* WINDOW_SYNC */
3756 dsi_write_reg(dsi, DSI_VM_TIMING2, r);
3758 r = dsi_read_reg(dsi, DSI_VM_TIMING3);
3759 r = FLD_MOD(r, vm->vactive, 14, 0); /* VACT */
3760 r = FLD_MOD(r, tl, 31, 16); /* TL */
3761 dsi_write_reg(dsi, DSI_VM_TIMING3, r);
3765 static int dsi_configure_pins(struct omap_dss_device *dssdev,
3766 const struct omap_dsi_pin_config *pin_cfg)
3768 struct dsi_data *dsi = to_dsi_data(dssdev);
3771 struct dsi_lane_config lanes[DSI_MAX_NR_LANES];
3775 static const enum dsi_lane_function functions[] = {
3783 num_pins = pin_cfg->num_pins;
3784 pins = pin_cfg->pins;
3786 if (num_pins < 4 || num_pins > dsi->num_lanes_supported * 2
3787 || num_pins % 2 != 0)
3790 for (i = 0; i < DSI_MAX_NR_LANES; ++i)
3791 lanes[i].function = DSI_LANE_UNUSED;
3795 for (i = 0; i < num_pins; i += 2) {
3802 if (dx < 0 || dx >= dsi->num_lanes_supported * 2)
3805 if (dy < 0 || dy >= dsi->num_lanes_supported * 2)
3820 lanes[lane].function = functions[i / 2];
3821 lanes[lane].polarity = pol;
3825 memcpy(dsi->lanes, lanes, sizeof(dsi->lanes));
3826 dsi->num_lanes_used = num_lanes;
3831 static int dsi_enable_video_output(struct omap_dss_device *dssdev, int channel)
3833 struct dsi_data *dsi = to_dsi_data(dssdev);
3834 int bpp = dsi_get_pixel_size(dsi->pix_fmt);
3835 struct omap_dss_device *out = &dsi->output;
3840 if (!out->dispc_channel_connected) {
3841 DSSERR("failed to enable display: no output/manager\n");
3845 r = dsi_display_init_dispc(dsi);
3847 goto err_init_dispc;
3849 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3850 switch (dsi->pix_fmt) {
3851 case OMAP_DSS_DSI_FMT_RGB888:
3852 data_type = MIPI_DSI_PACKED_PIXEL_STREAM_24;
3854 case OMAP_DSS_DSI_FMT_RGB666:
3855 data_type = MIPI_DSI_PIXEL_STREAM_3BYTE_18;
3857 case OMAP_DSS_DSI_FMT_RGB666_PACKED:
3858 data_type = MIPI_DSI_PACKED_PIXEL_STREAM_18;
3860 case OMAP_DSS_DSI_FMT_RGB565:
3861 data_type = MIPI_DSI_PACKED_PIXEL_STREAM_16;
3868 dsi_if_enable(dsi, false);
3869 dsi_vc_enable(dsi, channel, false);
3871 /* MODE, 1 = video mode */
3872 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), 1, 4, 4);
3874 word_count = DIV_ROUND_UP(dsi->vm.hactive * bpp, 8);
3876 dsi_vc_write_long_header(dsi, channel, data_type,
3879 dsi_vc_enable(dsi, channel, true);
3880 dsi_if_enable(dsi, true);
3883 r = dss_mgr_enable(&dsi->output);
3885 goto err_mgr_enable;
3890 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3891 dsi_if_enable(dsi, false);
3892 dsi_vc_enable(dsi, channel, false);
3895 dsi_display_uninit_dispc(dsi);
3900 static void dsi_disable_video_output(struct omap_dss_device *dssdev, int channel)
3902 struct dsi_data *dsi = to_dsi_data(dssdev);
3904 if (dsi->mode == OMAP_DSS_DSI_VIDEO_MODE) {
3905 dsi_if_enable(dsi, false);
3906 dsi_vc_enable(dsi, channel, false);
3908 /* MODE, 0 = command mode */
3909 REG_FLD_MOD(dsi, DSI_VC_CTRL(channel), 0, 4, 4);
3911 dsi_vc_enable(dsi, channel, true);
3912 dsi_if_enable(dsi, true);
3915 dss_mgr_disable(&dsi->output);
3917 dsi_display_uninit_dispc(dsi);
3920 static void dsi_update_screen_dispc(struct dsi_data *dsi)
3922 unsigned int bytespp;
3923 unsigned int bytespl;
3924 unsigned int bytespf;
3925 unsigned int total_len;
3926 unsigned int packet_payload;
3927 unsigned int packet_len;
3930 const unsigned channel = dsi->update_channel;
3931 const unsigned int line_buf_size = dsi->line_buffer_size;
3932 u16 w = dsi->vm.hactive;
3933 u16 h = dsi->vm.vactive;
3935 DSSDBG("dsi_update_screen_dispc(%dx%d)\n", w, h);
3937 dsi_vc_config_source(dsi, channel, DSI_VC_SOURCE_VP);
3939 bytespp = dsi_get_pixel_size(dsi->pix_fmt) / 8;
3940 bytespl = w * bytespp;
3941 bytespf = bytespl * h;
3943 /* NOTE: packet_payload has to be equal to N * bytespl, where N is
3944 * number of lines in a packet. See errata about VP_CLK_RATIO */
3946 if (bytespf < line_buf_size)
3947 packet_payload = bytespf;
3949 packet_payload = (line_buf_size) / bytespl * bytespl;
3951 packet_len = packet_payload + 1; /* 1 byte for DCS cmd */
3952 total_len = (bytespf / packet_payload) * packet_len;
3954 if (bytespf % packet_payload)
3955 total_len += (bytespf % packet_payload) + 1;
3957 l = FLD_VAL(total_len, 23, 0); /* TE_SIZE */
3958 dsi_write_reg(dsi, DSI_VC_TE(channel), l);
3960 dsi_vc_write_long_header(dsi, channel, MIPI_DSI_DCS_LONG_WRITE,
3963 if (dsi->te_enabled)
3964 l = FLD_MOD(l, 1, 30, 30); /* TE_EN */
3966 l = FLD_MOD(l, 1, 31, 31); /* TE_START */
3967 dsi_write_reg(dsi, DSI_VC_TE(channel), l);
3969 /* We put SIDLEMODE to no-idle for the duration of the transfer,
3970 * because DSS interrupts are not capable of waking up the CPU and the
3971 * framedone interrupt could be delayed for quite a long time. I think
3972 * the same goes for any DSS interrupts, but for some reason I have not
3973 * seen the problem anywhere else than here.
3975 dispc_disable_sidle(dsi->dss->dispc);
3977 dsi_perf_mark_start(dsi);
3979 r = schedule_delayed_work(&dsi->framedone_timeout_work,
3980 msecs_to_jiffies(250));
3983 dss_mgr_set_timings(&dsi->output, &dsi->vm);
3985 dss_mgr_start_update(&dsi->output);
3987 if (dsi->te_enabled) {
3988 /* disable LP_RX_TO, so that we can receive TE. Time to wait
3989 * for TE is longer than the timer allows */
3990 REG_FLD_MOD(dsi, DSI_TIMING2, 0, 15, 15); /* LP_RX_TO */
3992 dsi_vc_send_bta(dsi, channel);
3994 #ifdef DSI_CATCH_MISSING_TE
3995 mod_timer(&dsi->te_timer, jiffies + msecs_to_jiffies(250));
4000 #ifdef DSI_CATCH_MISSING_TE
4001 static void dsi_te_timeout(struct timer_list *unused)
4003 DSSERR("TE not received for 250ms!\n");
4007 static void dsi_handle_framedone(struct dsi_data *dsi, int error)
4009 /* SIDLEMODE back to smart-idle */
4010 dispc_enable_sidle(dsi->dss->dispc);
4012 if (dsi->te_enabled) {
4013 /* enable LP_RX_TO again after the TE */
4014 REG_FLD_MOD(dsi, DSI_TIMING2, 1, 15, 15); /* LP_RX_TO */
4017 dsi->framedone_callback(error, dsi->framedone_data);
4020 dsi_perf_show(dsi, "DISPC");
4023 static void dsi_framedone_timeout_work_callback(struct work_struct *work)
4025 struct dsi_data *dsi = container_of(work, struct dsi_data,
4026 framedone_timeout_work.work);
4027 /* XXX While extremely unlikely, we could get FRAMEDONE interrupt after
4028 * 250ms which would conflict with this timeout work. What should be
4029 * done is first cancel the transfer on the HW, and then cancel the
4030 * possibly scheduled framedone work. However, cancelling the transfer
4031 * on the HW is buggy, and would probably require resetting the whole
4034 DSSERR("Framedone not received for 250ms!\n");
4036 dsi_handle_framedone(dsi, -ETIMEDOUT);
4039 static void dsi_framedone_irq_callback(void *data)
4041 struct dsi_data *dsi = data;
4043 /* Note: We get FRAMEDONE when DISPC has finished sending pixels and
4044 * turns itself off. However, DSI still has the pixels in its buffers,
4045 * and is sending the data.
4048 cancel_delayed_work(&dsi->framedone_timeout_work);
4050 dsi_handle_framedone(dsi, 0);
4053 static int dsi_update(struct omap_dss_device *dssdev, int channel,
4054 void (*callback)(int, void *), void *data)
4056 struct dsi_data *dsi = to_dsi_data(dssdev);
4059 dsi_perf_mark_setup(dsi);
4061 dsi->update_channel = channel;
4063 dsi->framedone_callback = callback;
4064 dsi->framedone_data = data;
4066 dw = dsi->vm.hactive;
4067 dh = dsi->vm.vactive;
4069 #ifdef DSI_PERF_MEASURE
4070 dsi->update_bytes = dw * dh *
4071 dsi_get_pixel_size(dsi->pix_fmt) / 8;
4073 dsi_update_screen_dispc(dsi);
4080 static int dsi_configure_dispc_clocks(struct dsi_data *dsi)
4082 struct dispc_clock_info dispc_cinfo;
4086 fck = dsi_get_pll_hsdiv_dispc_rate(dsi);
4088 dispc_cinfo.lck_div = dsi->user_dispc_cinfo.lck_div;
4089 dispc_cinfo.pck_div = dsi->user_dispc_cinfo.pck_div;
4091 r = dispc_calc_clock_rates(dsi->dss->dispc, fck, &dispc_cinfo);
4093 DSSERR("Failed to calc dispc clocks\n");
4097 dsi->mgr_config.clock_info = dispc_cinfo;
4102 static int dsi_display_init_dispc(struct dsi_data *dsi)
4104 enum omap_channel channel = dsi->output.dispc_channel;
4107 dss_select_lcd_clk_source(dsi->dss, channel, dsi->module_id == 0 ?
4108 DSS_CLK_SRC_PLL1_1 :
4109 DSS_CLK_SRC_PLL2_1);
4111 if (dsi->mode == OMAP_DSS_DSI_CMD_MODE) {
4112 r = dss_mgr_register_framedone_handler(&dsi->output,
4113 dsi_framedone_irq_callback, dsi);
4115 DSSERR("can't register FRAMEDONE handler\n");
4119 dsi->mgr_config.stallmode = true;
4120 dsi->mgr_config.fifohandcheck = true;
4122 dsi->mgr_config.stallmode = false;
4123 dsi->mgr_config.fifohandcheck = false;
4127 * override interlace, logic level and edge related parameters in
4128 * videomode with default values
4130 dsi->vm.flags &= ~DISPLAY_FLAGS_INTERLACED;
4131 dsi->vm.flags &= ~DISPLAY_FLAGS_HSYNC_LOW;
4132 dsi->vm.flags |= DISPLAY_FLAGS_HSYNC_HIGH;
4133 dsi->vm.flags &= ~DISPLAY_FLAGS_VSYNC_LOW;
4134 dsi->vm.flags |= DISPLAY_FLAGS_VSYNC_HIGH;
4135 dsi->vm.flags &= ~DISPLAY_FLAGS_PIXDATA_NEGEDGE;
4136 dsi->vm.flags |= DISPLAY_FLAGS_PIXDATA_POSEDGE;
4137 dsi->vm.flags &= ~DISPLAY_FLAGS_DE_LOW;
4138 dsi->vm.flags |= DISPLAY_FLAGS_DE_HIGH;
4139 dsi->vm.flags &= ~DISPLAY_FLAGS_SYNC_POSEDGE;
4140 dsi->vm.flags |= DISPLAY_FLAGS_SYNC_NEGEDGE;
4142 dss_mgr_set_timings(&dsi->output, &dsi->vm);
4144 r = dsi_configure_dispc_clocks(dsi);
4148 dsi->mgr_config.io_pad_mode = DSS_IO_PAD_MODE_BYPASS;
4149 dsi->mgr_config.video_port_width =
4150 dsi_get_pixel_size(dsi->pix_fmt);
4151 dsi->mgr_config.lcden_sig_polarity = 0;
4153 dss_mgr_set_lcd_config(&dsi->output, &dsi->mgr_config);
4157 if (dsi->mode == OMAP_DSS_DSI_CMD_MODE)
4158 dss_mgr_unregister_framedone_handler(&dsi->output,
4159 dsi_framedone_irq_callback, dsi);
4161 dss_select_lcd_clk_source(dsi->dss, channel, DSS_CLK_SRC_FCK);
4165 static void dsi_display_uninit_dispc(struct dsi_data *dsi)
4167 enum omap_channel channel = dsi->output.dispc_channel;
4169 if (dsi->mode == OMAP_DSS_DSI_CMD_MODE)
4170 dss_mgr_unregister_framedone_handler(&dsi->output,
4171 dsi_framedone_irq_callback, dsi);
4173 dss_select_lcd_clk_source(dsi->dss, channel, DSS_CLK_SRC_FCK);
4176 static int dsi_configure_dsi_clocks(struct dsi_data *dsi)
4178 struct dss_pll_clock_info cinfo;
4181 cinfo = dsi->user_dsi_cinfo;
4183 r = dss_pll_set_config(&dsi->pll, &cinfo);
4185 DSSERR("Failed to set dsi clocks\n");
4192 static int dsi_display_init_dsi(struct dsi_data *dsi)
4196 r = dss_pll_enable(&dsi->pll);
4200 r = dsi_configure_dsi_clocks(dsi);
4204 dss_select_dsi_clk_source(dsi->dss, dsi->module_id,
4205 dsi->module_id == 0 ?
4206 DSS_CLK_SRC_PLL1_2 : DSS_CLK_SRC_PLL2_2);
4210 r = dsi_cio_init(dsi);
4214 _dsi_print_reset_status(dsi);
4216 dsi_proto_timings(dsi);
4217 dsi_set_lp_clk_divisor(dsi);
4220 _dsi_print_reset_status(dsi);
4222 r = dsi_proto_config(dsi);
4226 /* enable interface */
4227 dsi_vc_enable(dsi, 0, 1);
4228 dsi_vc_enable(dsi, 1, 1);
4229 dsi_vc_enable(dsi, 2, 1);
4230 dsi_vc_enable(dsi, 3, 1);
4231 dsi_if_enable(dsi, 1);
4232 dsi_force_tx_stop_mode_io(dsi);
4236 dsi_cio_uninit(dsi);
4238 dss_select_dsi_clk_source(dsi->dss, dsi->module_id, DSS_CLK_SRC_FCK);
4240 dss_pll_disable(&dsi->pll);
4245 static void dsi_display_uninit_dsi(struct dsi_data *dsi, bool disconnect_lanes,
4248 if (enter_ulps && !dsi->ulps_enabled)
4249 dsi_enter_ulps(dsi);
4251 /* disable interface */
4252 dsi_if_enable(dsi, 0);
4253 dsi_vc_enable(dsi, 0, 0);
4254 dsi_vc_enable(dsi, 1, 0);
4255 dsi_vc_enable(dsi, 2, 0);
4256 dsi_vc_enable(dsi, 3, 0);
4258 dss_select_dsi_clk_source(dsi->dss, dsi->module_id, DSS_CLK_SRC_FCK);
4259 dsi_cio_uninit(dsi);
4260 dsi_pll_uninit(dsi, disconnect_lanes);
4263 static int dsi_display_enable(struct omap_dss_device *dssdev)
4265 struct dsi_data *dsi = to_dsi_data(dssdev);
4268 DSSDBG("dsi_display_enable\n");
4270 WARN_ON(!dsi_bus_is_locked(dsi));
4272 mutex_lock(&dsi->lock);
4274 r = dsi_runtime_get(dsi);
4278 _dsi_initialize_irq(dsi);
4280 r = dsi_display_init_dsi(dsi);
4284 mutex_unlock(&dsi->lock);
4289 dsi_runtime_put(dsi);
4291 mutex_unlock(&dsi->lock);
4292 DSSDBG("dsi_display_enable FAILED\n");
4296 static void dsi_display_disable(struct omap_dss_device *dssdev,
4297 bool disconnect_lanes, bool enter_ulps)
4299 struct dsi_data *dsi = to_dsi_data(dssdev);
4301 DSSDBG("dsi_display_disable\n");
4303 WARN_ON(!dsi_bus_is_locked(dsi));
4305 mutex_lock(&dsi->lock);
4307 dsi_sync_vc(dsi, 0);
4308 dsi_sync_vc(dsi, 1);
4309 dsi_sync_vc(dsi, 2);
4310 dsi_sync_vc(dsi, 3);
4312 dsi_display_uninit_dsi(dsi, disconnect_lanes, enter_ulps);
4314 dsi_runtime_put(dsi);
4316 mutex_unlock(&dsi->lock);
4319 static int dsi_enable_te(struct omap_dss_device *dssdev, bool enable)
4321 struct dsi_data *dsi = to_dsi_data(dssdev);
4323 dsi->te_enabled = enable;
4327 #ifdef PRINT_VERBOSE_VM_TIMINGS
4328 static void print_dsi_vm(const char *str,
4329 const struct omap_dss_dsi_videomode_timings *t)
4331 unsigned long byteclk = t->hsclk / 4;
4332 int bl, wc, pps, tot;
4334 wc = DIV_ROUND_UP(t->hact * t->bitspp, 8);
4335 pps = DIV_ROUND_UP(wc + 6, t->ndl); /* pixel packet size */
4336 bl = t->hss + t->hsa + t->hse + t->hbp + t->hfp;
4339 #define TO_DSI_T(x) ((u32)div64_u64((u64)x * 1000000000llu, byteclk))
4341 pr_debug("%s bck %lu, %u/%u/%u/%u/%u/%u = %u+%u = %u, "
4342 "%u/%u/%u/%u/%u/%u = %u + %u = %u\n",
4345 t->hss, t->hsa, t->hse, t->hbp, pps, t->hfp,
4361 static void print_dispc_vm(const char *str, const struct videomode *vm)
4363 unsigned long pck = vm->pixelclock;
4367 bl = vm->hsync_len + vm->hback_porch + vm->hfront_porch;
4370 #define TO_DISPC_T(x) ((u32)div64_u64((u64)x * 1000000000llu, pck))
4372 pr_debug("%s pck %lu, %u/%u/%u/%u = %u+%u = %u, "
4373 "%u/%u/%u/%u = %u + %u = %u\n",
4376 vm->hsync_len, vm->hback_porch, hact, vm->hfront_porch,
4378 TO_DISPC_T(vm->hsync_len),
4379 TO_DISPC_T(vm->hback_porch),
4381 TO_DISPC_T(vm->hfront_porch),
4388 /* note: this is not quite accurate */
4389 static void print_dsi_dispc_vm(const char *str,
4390 const struct omap_dss_dsi_videomode_timings *t)
4392 struct videomode vm = { 0 };
4393 unsigned long byteclk = t->hsclk / 4;
4396 int dsi_hact, dsi_htot;
4398 dsi_tput = (u64)byteclk * t->ndl * 8;
4399 pck = (u32)div64_u64(dsi_tput, t->bitspp);
4400 dsi_hact = DIV_ROUND_UP(DIV_ROUND_UP(t->hact * t->bitspp, 8) + 6, t->ndl);
4401 dsi_htot = t->hss + t->hsa + t->hse + t->hbp + dsi_hact + t->hfp;
4403 vm.pixelclock = pck;
4404 vm.hsync_len = div64_u64((u64)(t->hsa + t->hse) * pck, byteclk);
4405 vm.hback_porch = div64_u64((u64)t->hbp * pck, byteclk);
4406 vm.hfront_porch = div64_u64((u64)t->hfp * pck, byteclk);
4407 vm.hactive = t->hact;
4409 print_dispc_vm(str, &vm);
4411 #endif /* PRINT_VERBOSE_VM_TIMINGS */
4413 static bool dsi_cm_calc_dispc_cb(int lckd, int pckd, unsigned long lck,
4414 unsigned long pck, void *data)
4416 struct dsi_clk_calc_ctx *ctx = data;
4417 struct videomode *vm = &ctx->vm;
4419 ctx->dispc_cinfo.lck_div = lckd;
4420 ctx->dispc_cinfo.pck_div = pckd;
4421 ctx->dispc_cinfo.lck = lck;
4422 ctx->dispc_cinfo.pck = pck;
4424 *vm = *ctx->config->vm;
4425 vm->pixelclock = pck;
4426 vm->hactive = ctx->config->vm->hactive;
4427 vm->vactive = ctx->config->vm->vactive;
4428 vm->hsync_len = vm->hfront_porch = vm->hback_porch = vm->vsync_len = 1;
4429 vm->vfront_porch = vm->vback_porch = 0;
4434 static bool dsi_cm_calc_hsdiv_cb(int m_dispc, unsigned long dispc,
4437 struct dsi_clk_calc_ctx *ctx = data;
4439 ctx->dsi_cinfo.mX[HSDIV_DISPC] = m_dispc;
4440 ctx->dsi_cinfo.clkout[HSDIV_DISPC] = dispc;
4442 return dispc_div_calc(ctx->dsi->dss->dispc, dispc,
4443 ctx->req_pck_min, ctx->req_pck_max,
4444 dsi_cm_calc_dispc_cb, ctx);
4447 static bool dsi_cm_calc_pll_cb(int n, int m, unsigned long fint,
4448 unsigned long clkdco, void *data)
4450 struct dsi_clk_calc_ctx *ctx = data;
4451 struct dsi_data *dsi = ctx->dsi;
4453 ctx->dsi_cinfo.n = n;
4454 ctx->dsi_cinfo.m = m;
4455 ctx->dsi_cinfo.fint = fint;
4456 ctx->dsi_cinfo.clkdco = clkdco;
4458 return dss_pll_hsdiv_calc_a(ctx->pll, clkdco, ctx->req_pck_min,
4459 dsi->data->max_fck_freq,
4460 dsi_cm_calc_hsdiv_cb, ctx);
4463 static bool dsi_cm_calc(struct dsi_data *dsi,
4464 const struct omap_dss_dsi_config *cfg,
4465 struct dsi_clk_calc_ctx *ctx)
4467 unsigned long clkin;
4469 unsigned long pll_min, pll_max;
4470 unsigned long pck, txbyteclk;
4472 clkin = clk_get_rate(dsi->pll.clkin);
4473 bitspp = dsi_get_pixel_size(cfg->pixel_format);
4474 ndl = dsi->num_lanes_used - 1;
4477 * Here we should calculate minimum txbyteclk to be able to send the
4478 * frame in time, and also to handle TE. That's not very simple, though,
4479 * especially as we go to LP between each pixel packet due to HW
4480 * "feature". So let's just estimate very roughly and multiply by 1.5.
4482 pck = cfg->vm->pixelclock;
4484 txbyteclk = pck * bitspp / 8 / ndl;
4486 memset(ctx, 0, sizeof(*ctx));
4488 ctx->pll = &dsi->pll;
4490 ctx->req_pck_min = pck;
4491 ctx->req_pck_nom = pck;
4492 ctx->req_pck_max = pck * 3 / 2;
4494 pll_min = max(cfg->hs_clk_min * 4, txbyteclk * 4 * 4);
4495 pll_max = cfg->hs_clk_max * 4;
4497 return dss_pll_calc_a(ctx->pll, clkin,
4499 dsi_cm_calc_pll_cb, ctx);
4502 static bool dsi_vm_calc_blanking(struct dsi_clk_calc_ctx *ctx)
4504 struct dsi_data *dsi = ctx->dsi;
4505 const struct omap_dss_dsi_config *cfg = ctx->config;
4506 int bitspp = dsi_get_pixel_size(cfg->pixel_format);
4507 int ndl = dsi->num_lanes_used - 1;
4508 unsigned long hsclk = ctx->dsi_cinfo.clkdco / 4;
4509 unsigned long byteclk = hsclk / 4;
4511 unsigned long dispc_pck, req_pck_min, req_pck_nom, req_pck_max;
4513 int panel_htot, panel_hbl; /* pixels */
4514 int dispc_htot, dispc_hbl; /* pixels */
4515 int dsi_htot, dsi_hact, dsi_hbl, hss, hse; /* byteclks */
4517 const struct videomode *req_vm;
4518 struct videomode *dispc_vm;
4519 struct omap_dss_dsi_videomode_timings *dsi_vm;
4520 u64 dsi_tput, dispc_tput;
4522 dsi_tput = (u64)byteclk * ndl * 8;
4525 req_pck_min = ctx->req_pck_min;
4526 req_pck_max = ctx->req_pck_max;
4527 req_pck_nom = ctx->req_pck_nom;
4529 dispc_pck = ctx->dispc_cinfo.pck;
4530 dispc_tput = (u64)dispc_pck * bitspp;
4532 xres = req_vm->hactive;
4534 panel_hbl = req_vm->hfront_porch + req_vm->hback_porch +
4536 panel_htot = xres + panel_hbl;
4538 dsi_hact = DIV_ROUND_UP(DIV_ROUND_UP(xres * bitspp, 8) + 6, ndl);
4541 * When there are no line buffers, DISPC and DSI must have the
4542 * same tput. Otherwise DISPC tput needs to be higher than DSI's.
4544 if (dsi->line_buffer_size < xres * bitspp / 8) {
4545 if (dispc_tput != dsi_tput)
4548 if (dispc_tput < dsi_tput)
4552 /* DSI tput must be over the min requirement */
4553 if (dsi_tput < (u64)bitspp * req_pck_min)
4556 /* When non-burst mode, DSI tput must be below max requirement. */
4557 if (cfg->trans_mode != OMAP_DSS_DSI_BURST_MODE) {
4558 if (dsi_tput > (u64)bitspp * req_pck_max)
4562 hss = DIV_ROUND_UP(4, ndl);
4564 if (cfg->trans_mode == OMAP_DSS_DSI_PULSE_MODE) {
4565 if (ndl == 3 && req_vm->hsync_len == 0)
4568 hse = DIV_ROUND_UP(4, ndl);
4573 /* DSI htot to match the panel's nominal pck */
4574 dsi_htot = div64_u64((u64)panel_htot * byteclk, req_pck_nom);
4576 /* fail if there would be no time for blanking */
4577 if (dsi_htot < hss + hse + dsi_hact)
4580 /* total DSI blanking needed to achieve panel's TL */
4581 dsi_hbl = dsi_htot - dsi_hact;
4583 /* DISPC htot to match the DSI TL */
4584 dispc_htot = div64_u64((u64)dsi_htot * dispc_pck, byteclk);
4586 /* verify that the DSI and DISPC TLs are the same */
4587 if ((u64)dsi_htot * dispc_pck != (u64)dispc_htot * byteclk)
4590 dispc_hbl = dispc_htot - xres;
4592 /* setup DSI videomode */
4594 dsi_vm = &ctx->dsi_vm;
4595 memset(dsi_vm, 0, sizeof(*dsi_vm));
4597 dsi_vm->hsclk = hsclk;
4600 dsi_vm->bitspp = bitspp;
4602 if (cfg->trans_mode != OMAP_DSS_DSI_PULSE_MODE) {
4604 } else if (ndl == 3 && req_vm->hsync_len == 0) {
4607 hsa = div64_u64((u64)req_vm->hsync_len * byteclk, req_pck_nom);
4608 hsa = max(hsa - hse, 1);
4611 hbp = div64_u64((u64)req_vm->hback_porch * byteclk, req_pck_nom);
4614 hfp = dsi_hbl - (hss + hsa + hse + hbp);
4617 /* we need to take cycles from hbp */
4620 hbp = max(hbp - t, 1);
4621 hfp = dsi_hbl - (hss + hsa + hse + hbp);
4623 if (hfp < 1 && hsa > 0) {
4624 /* we need to take cycles from hsa */
4626 hsa = max(hsa - t, 1);
4627 hfp = dsi_hbl - (hss + hsa + hse + hbp);
4638 dsi_vm->hact = xres;
4641 dsi_vm->vsa = req_vm->vsync_len;
4642 dsi_vm->vbp = req_vm->vback_porch;
4643 dsi_vm->vact = req_vm->vactive;
4644 dsi_vm->vfp = req_vm->vfront_porch;
4646 dsi_vm->trans_mode = cfg->trans_mode;
4648 dsi_vm->blanking_mode = 0;
4649 dsi_vm->hsa_blanking_mode = 1;
4650 dsi_vm->hfp_blanking_mode = 1;
4651 dsi_vm->hbp_blanking_mode = 1;
4653 dsi_vm->ddr_clk_always_on = cfg->ddr_clk_always_on;
4654 dsi_vm->window_sync = 4;
4656 /* setup DISPC videomode */
4658 dispc_vm = &ctx->vm;
4659 *dispc_vm = *req_vm;
4660 dispc_vm->pixelclock = dispc_pck;
4662 if (cfg->trans_mode == OMAP_DSS_DSI_PULSE_MODE) {
4663 hsa = div64_u64((u64)req_vm->hsync_len * dispc_pck,
4670 hbp = div64_u64((u64)req_vm->hback_porch * dispc_pck, req_pck_nom);
4673 hfp = dispc_hbl - hsa - hbp;
4676 /* we need to take cycles from hbp */
4679 hbp = max(hbp - t, 1);
4680 hfp = dispc_hbl - hsa - hbp;
4683 /* we need to take cycles from hsa */
4685 hsa = max(hsa - t, 1);
4686 hfp = dispc_hbl - hsa - hbp;
4693 dispc_vm->hfront_porch = hfp;
4694 dispc_vm->hsync_len = hsa;
4695 dispc_vm->hback_porch = hbp;
4701 static bool dsi_vm_calc_dispc_cb(int lckd, int pckd, unsigned long lck,
4702 unsigned long pck, void *data)
4704 struct dsi_clk_calc_ctx *ctx = data;
4706 ctx->dispc_cinfo.lck_div = lckd;
4707 ctx->dispc_cinfo.pck_div = pckd;
4708 ctx->dispc_cinfo.lck = lck;
4709 ctx->dispc_cinfo.pck = pck;
4711 if (dsi_vm_calc_blanking(ctx) == false)
4714 #ifdef PRINT_VERBOSE_VM_TIMINGS
4715 print_dispc_vm("dispc", &ctx->vm);
4716 print_dsi_vm("dsi ", &ctx->dsi_vm);
4717 print_dispc_vm("req ", ctx->config->vm);
4718 print_dsi_dispc_vm("act ", &ctx->dsi_vm);
4724 static bool dsi_vm_calc_hsdiv_cb(int m_dispc, unsigned long dispc,
4727 struct dsi_clk_calc_ctx *ctx = data;
4728 unsigned long pck_max;
4730 ctx->dsi_cinfo.mX[HSDIV_DISPC] = m_dispc;
4731 ctx->dsi_cinfo.clkout[HSDIV_DISPC] = dispc;
4734 * In burst mode we can let the dispc pck be arbitrarily high, but it
4735 * limits our scaling abilities. So for now, don't aim too high.
4738 if (ctx->config->trans_mode == OMAP_DSS_DSI_BURST_MODE)
4739 pck_max = ctx->req_pck_max + 10000000;
4741 pck_max = ctx->req_pck_max;
4743 return dispc_div_calc(ctx->dsi->dss->dispc, dispc,
4744 ctx->req_pck_min, pck_max,
4745 dsi_vm_calc_dispc_cb, ctx);
4748 static bool dsi_vm_calc_pll_cb(int n, int m, unsigned long fint,
4749 unsigned long clkdco, void *data)
4751 struct dsi_clk_calc_ctx *ctx = data;
4752 struct dsi_data *dsi = ctx->dsi;
4754 ctx->dsi_cinfo.n = n;
4755 ctx->dsi_cinfo.m = m;
4756 ctx->dsi_cinfo.fint = fint;
4757 ctx->dsi_cinfo.clkdco = clkdco;
4759 return dss_pll_hsdiv_calc_a(ctx->pll, clkdco, ctx->req_pck_min,
4760 dsi->data->max_fck_freq,
4761 dsi_vm_calc_hsdiv_cb, ctx);
4764 static bool dsi_vm_calc(struct dsi_data *dsi,
4765 const struct omap_dss_dsi_config *cfg,
4766 struct dsi_clk_calc_ctx *ctx)
4768 const struct videomode *vm = cfg->vm;
4769 unsigned long clkin;
4770 unsigned long pll_min;
4771 unsigned long pll_max;
4772 int ndl = dsi->num_lanes_used - 1;
4773 int bitspp = dsi_get_pixel_size(cfg->pixel_format);
4774 unsigned long byteclk_min;
4776 clkin = clk_get_rate(dsi->pll.clkin);
4778 memset(ctx, 0, sizeof(*ctx));
4780 ctx->pll = &dsi->pll;
4783 /* these limits should come from the panel driver */
4784 ctx->req_pck_min = vm->pixelclock - 1000;
4785 ctx->req_pck_nom = vm->pixelclock;
4786 ctx->req_pck_max = vm->pixelclock + 1000;
4788 byteclk_min = div64_u64((u64)ctx->req_pck_min * bitspp, ndl * 8);
4789 pll_min = max(cfg->hs_clk_min * 4, byteclk_min * 4 * 4);
4791 if (cfg->trans_mode == OMAP_DSS_DSI_BURST_MODE) {
4792 pll_max = cfg->hs_clk_max * 4;
4794 unsigned long byteclk_max;
4795 byteclk_max = div64_u64((u64)ctx->req_pck_max * bitspp,
4798 pll_max = byteclk_max * 4 * 4;
4801 return dss_pll_calc_a(ctx->pll, clkin,
4803 dsi_vm_calc_pll_cb, ctx);
4806 static int dsi_set_config(struct omap_dss_device *dssdev,
4807 const struct omap_dss_dsi_config *config)
4809 struct dsi_data *dsi = to_dsi_data(dssdev);
4810 struct dsi_clk_calc_ctx ctx;
4814 mutex_lock(&dsi->lock);
4816 dsi->pix_fmt = config->pixel_format;
4817 dsi->mode = config->mode;
4819 if (config->mode == OMAP_DSS_DSI_VIDEO_MODE)
4820 ok = dsi_vm_calc(dsi, config, &ctx);
4822 ok = dsi_cm_calc(dsi, config, &ctx);
4825 DSSERR("failed to find suitable DSI clock settings\n");
4830 dsi_pll_calc_dsi_fck(dsi, &ctx.dsi_cinfo);
4832 r = dsi_lp_clock_calc(ctx.dsi_cinfo.clkout[HSDIV_DSI],
4833 config->lp_clk_min, config->lp_clk_max, &dsi->user_lp_cinfo);
4835 DSSERR("failed to find suitable DSI LP clock settings\n");
4839 dsi->user_dsi_cinfo = ctx.dsi_cinfo;
4840 dsi->user_dispc_cinfo = ctx.dispc_cinfo;
4843 dsi->vm_timings = ctx.dsi_vm;
4845 mutex_unlock(&dsi->lock);
4849 mutex_unlock(&dsi->lock);
4855 * Return a hardcoded channel for the DSI output. This should work for
4856 * current use cases, but this can be later expanded to either resolve
4857 * the channel in some more dynamic manner, or get the channel as a user
4860 static enum omap_channel dsi_get_channel(struct dsi_data *dsi)
4862 switch (dsi->data->model) {
4863 case DSI_MODEL_OMAP3:
4864 return OMAP_DSS_CHANNEL_LCD;
4866 case DSI_MODEL_OMAP4:
4867 switch (dsi->module_id) {
4869 return OMAP_DSS_CHANNEL_LCD;
4871 return OMAP_DSS_CHANNEL_LCD2;
4873 DSSWARN("unsupported module id\n");
4874 return OMAP_DSS_CHANNEL_LCD;
4877 case DSI_MODEL_OMAP5:
4878 switch (dsi->module_id) {
4880 return OMAP_DSS_CHANNEL_LCD;
4882 return OMAP_DSS_CHANNEL_LCD3;
4884 DSSWARN("unsupported module id\n");
4885 return OMAP_DSS_CHANNEL_LCD;
4889 DSSWARN("unsupported DSS version\n");
4890 return OMAP_DSS_CHANNEL_LCD;
4894 static int dsi_request_vc(struct omap_dss_device *dssdev, int *channel)
4896 struct dsi_data *dsi = to_dsi_data(dssdev);
4899 for (i = 0; i < ARRAY_SIZE(dsi->vc); i++) {
4900 if (!dsi->vc[i].dssdev) {
4901 dsi->vc[i].dssdev = dssdev;
4907 DSSERR("cannot get VC for display %s", dssdev->name);
4911 static int dsi_set_vc_id(struct omap_dss_device *dssdev, int channel, int vc_id)
4913 struct dsi_data *dsi = to_dsi_data(dssdev);
4915 if (vc_id < 0 || vc_id > 3) {
4916 DSSERR("VC ID out of range\n");
4920 if (channel < 0 || channel > 3) {
4921 DSSERR("Virtual Channel out of range\n");
4925 if (dsi->vc[channel].dssdev != dssdev) {
4926 DSSERR("Virtual Channel not allocated to display %s\n",
4931 dsi->vc[channel].vc_id = vc_id;
4936 static void dsi_release_vc(struct omap_dss_device *dssdev, int channel)
4938 struct dsi_data *dsi = to_dsi_data(dssdev);
4940 if ((channel >= 0 && channel <= 3) &&
4941 dsi->vc[channel].dssdev == dssdev) {
4942 dsi->vc[channel].dssdev = NULL;
4943 dsi->vc[channel].vc_id = 0;
4948 static int dsi_get_clocks(struct dsi_data *dsi)
4952 clk = devm_clk_get(dsi->dev, "fck");
4954 DSSERR("can't get fck\n");
4955 return PTR_ERR(clk);
4963 static int dsi_connect(struct omap_dss_device *dssdev,
4964 struct omap_dss_device *dst)
4966 struct dsi_data *dsi = to_dsi_data(dssdev);
4969 r = dsi_regulator_init(dsi);
4973 r = dss_mgr_connect(&dsi->output, dssdev);
4977 r = omapdss_output_set_device(dssdev, dst);
4979 DSSERR("failed to connect output to new device: %s\n",
4981 dss_mgr_disconnect(&dsi->output, dssdev);
4988 static void dsi_disconnect(struct omap_dss_device *dssdev,
4989 struct omap_dss_device *dst)
4991 struct dsi_data *dsi = to_dsi_data(dssdev);
4993 WARN_ON(dst != dssdev->dst);
4995 if (dst != dssdev->dst)
4998 omapdss_output_unset_device(dssdev);
5000 dss_mgr_disconnect(&dsi->output, dssdev);
5003 static const struct omapdss_dsi_ops dsi_ops = {
5004 .connect = dsi_connect,
5005 .disconnect = dsi_disconnect,
5007 .bus_lock = dsi_bus_lock,
5008 .bus_unlock = dsi_bus_unlock,
5010 .enable = dsi_display_enable,
5011 .disable = dsi_display_disable,
5013 .enable_hs = dsi_vc_enable_hs,
5015 .configure_pins = dsi_configure_pins,
5016 .set_config = dsi_set_config,
5018 .enable_video_output = dsi_enable_video_output,
5019 .disable_video_output = dsi_disable_video_output,
5021 .update = dsi_update,
5023 .enable_te = dsi_enable_te,
5025 .request_vc = dsi_request_vc,
5026 .set_vc_id = dsi_set_vc_id,
5027 .release_vc = dsi_release_vc,
5029 .dcs_write = dsi_vc_dcs_write,
5030 .dcs_write_nosync = dsi_vc_dcs_write_nosync,
5031 .dcs_read = dsi_vc_dcs_read,
5033 .gen_write = dsi_vc_generic_write,
5034 .gen_write_nosync = dsi_vc_generic_write_nosync,
5035 .gen_read = dsi_vc_generic_read,
5037 .bta_sync = dsi_vc_send_bta_sync,
5039 .set_max_rx_packet_size = dsi_vc_set_max_rx_packet_size,
5042 static void dsi_init_output(struct dsi_data *dsi)
5044 struct omap_dss_device *out = &dsi->output;
5046 out->dev = dsi->dev;
5047 out->id = dsi->module_id == 0 ?
5048 OMAP_DSS_OUTPUT_DSI1 : OMAP_DSS_OUTPUT_DSI2;
5050 out->output_type = OMAP_DISPLAY_TYPE_DSI;
5051 out->name = dsi->module_id == 0 ? "dsi.0" : "dsi.1";
5052 out->dispc_channel = dsi_get_channel(dsi);
5053 out->ops.dsi = &dsi_ops;
5054 out->owner = THIS_MODULE;
5056 omapdss_register_output(out);
5059 static void dsi_uninit_output(struct dsi_data *dsi)
5061 struct omap_dss_device *out = &dsi->output;
5063 omapdss_unregister_output(out);
5066 static int dsi_probe_of(struct dsi_data *dsi)
5068 struct device_node *node = dsi->dev->of_node;
5069 struct property *prop;
5073 struct device_node *ep;
5074 struct omap_dsi_pin_config pin_cfg;
5076 ep = of_graph_get_endpoint_by_regs(node, 0, 0);
5080 prop = of_find_property(ep, "lanes", &len);
5082 dev_err(dsi->dev, "failed to find lane data\n");
5087 num_pins = len / sizeof(u32);
5089 if (num_pins < 4 || num_pins % 2 != 0 ||
5090 num_pins > dsi->num_lanes_supported * 2) {
5091 dev_err(dsi->dev, "bad number of lanes\n");
5096 r = of_property_read_u32_array(ep, "lanes", lane_arr, num_pins);
5098 dev_err(dsi->dev, "failed to read lane data\n");
5102 pin_cfg.num_pins = num_pins;
5103 for (i = 0; i < num_pins; ++i)
5104 pin_cfg.pins[i] = (int)lane_arr[i];
5106 r = dsi_configure_pins(&dsi->output, &pin_cfg);
5108 dev_err(dsi->dev, "failed to configure pins");
5121 static const struct dss_pll_ops dsi_pll_ops = {
5122 .enable = dsi_pll_enable,
5123 .disable = dsi_pll_disable,
5124 .set_config = dss_pll_write_config_type_a,
5127 static const struct dss_pll_hw dss_omap3_dsi_pll_hw = {
5128 .type = DSS_PLL_TYPE_A,
5130 .n_max = (1 << 7) - 1,
5131 .m_max = (1 << 11) - 1,
5132 .mX_max = (1 << 4) - 1,
5134 .fint_max = 2100000,
5135 .clkdco_low = 1000000000,
5136 .clkdco_max = 1800000000,
5148 .has_stopmode = true,
5149 .has_freqsel = true,
5150 .has_selfreqdco = false,
5151 .has_refsel = false,
5154 static const struct dss_pll_hw dss_omap4_dsi_pll_hw = {
5155 .type = DSS_PLL_TYPE_A,
5157 .n_max = (1 << 8) - 1,
5158 .m_max = (1 << 12) - 1,
5159 .mX_max = (1 << 5) - 1,
5161 .fint_max = 2500000,
5162 .clkdco_low = 1000000000,
5163 .clkdco_max = 1800000000,
5175 .has_stopmode = true,
5176 .has_freqsel = false,
5177 .has_selfreqdco = false,
5178 .has_refsel = false,
5181 static const struct dss_pll_hw dss_omap5_dsi_pll_hw = {
5182 .type = DSS_PLL_TYPE_A,
5184 .n_max = (1 << 8) - 1,
5185 .m_max = (1 << 12) - 1,
5186 .mX_max = (1 << 5) - 1,
5188 .fint_max = 52000000,
5189 .clkdco_low = 1000000000,
5190 .clkdco_max = 1800000000,
5202 .has_stopmode = true,
5203 .has_freqsel = false,
5204 .has_selfreqdco = true,
5208 static int dsi_init_pll_data(struct dss_device *dss, struct dsi_data *dsi)
5210 struct dss_pll *pll = &dsi->pll;
5214 clk = devm_clk_get(dsi->dev, "sys_clk");
5216 DSSERR("can't get sys_clk\n");
5217 return PTR_ERR(clk);
5220 pll->name = dsi->module_id == 0 ? "dsi0" : "dsi1";
5221 pll->id = dsi->module_id == 0 ? DSS_PLL_DSI1 : DSS_PLL_DSI2;
5223 pll->base = dsi->pll_base;
5224 pll->hw = dsi->data->pll_hw;
5225 pll->ops = &dsi_pll_ops;
5227 r = dss_pll_register(dss, pll);
5234 /* DSI1 HW IP initialisation */
5235 static const struct dsi_of_data dsi_of_data_omap34xx = {
5236 .model = DSI_MODEL_OMAP3,
5237 .pll_hw = &dss_omap3_dsi_pll_hw,
5238 .modules = (const struct dsi_module_id_data[]) {
5239 { .address = 0x4804fc00, .id = 0, },
5242 .max_fck_freq = 173000000,
5243 .max_pll_lpdiv = (1 << 13) - 1,
5244 .quirks = DSI_QUIRK_REVERSE_TXCLKESC,
5247 static const struct dsi_of_data dsi_of_data_omap36xx = {
5248 .model = DSI_MODEL_OMAP3,
5249 .pll_hw = &dss_omap3_dsi_pll_hw,
5250 .modules = (const struct dsi_module_id_data[]) {
5251 { .address = 0x4804fc00, .id = 0, },
5254 .max_fck_freq = 173000000,
5255 .max_pll_lpdiv = (1 << 13) - 1,
5256 .quirks = DSI_QUIRK_PLL_PWR_BUG,
5259 static const struct dsi_of_data dsi_of_data_omap4 = {
5260 .model = DSI_MODEL_OMAP4,
5261 .pll_hw = &dss_omap4_dsi_pll_hw,
5262 .modules = (const struct dsi_module_id_data[]) {
5263 { .address = 0x58004000, .id = 0, },
5264 { .address = 0x58005000, .id = 1, },
5267 .max_fck_freq = 170000000,
5268 .max_pll_lpdiv = (1 << 13) - 1,
5269 .quirks = DSI_QUIRK_DCS_CMD_CONFIG_VC | DSI_QUIRK_VC_OCP_WIDTH
5273 static const struct dsi_of_data dsi_of_data_omap5 = {
5274 .model = DSI_MODEL_OMAP5,
5275 .pll_hw = &dss_omap5_dsi_pll_hw,
5276 .modules = (const struct dsi_module_id_data[]) {
5277 { .address = 0x58004000, .id = 0, },
5278 { .address = 0x58009000, .id = 1, },
5281 .max_fck_freq = 209250000,
5282 .max_pll_lpdiv = (1 << 13) - 1,
5283 .quirks = DSI_QUIRK_DCS_CMD_CONFIG_VC | DSI_QUIRK_VC_OCP_WIDTH
5284 | DSI_QUIRK_GNQ | DSI_QUIRK_PHY_DCC,
5287 static const struct of_device_id dsi_of_match[] = {
5288 { .compatible = "ti,omap3-dsi", .data = &dsi_of_data_omap36xx, },
5289 { .compatible = "ti,omap4-dsi", .data = &dsi_of_data_omap4, },
5290 { .compatible = "ti,omap5-dsi", .data = &dsi_of_data_omap5, },
5294 static const struct soc_device_attribute dsi_soc_devices[] = {
5295 { .machine = "OMAP3[45]*", .data = &dsi_of_data_omap34xx },
5296 { .machine = "AM35*", .data = &dsi_of_data_omap34xx },
5300 static int dsi_bind(struct device *dev, struct device *master, void *data)
5302 struct platform_device *pdev = to_platform_device(dev);
5303 struct dss_device *dss = dss_get_device(master);
5304 const struct soc_device_attribute *soc;
5305 const struct dsi_module_id_data *d;
5308 struct dsi_data *dsi;
5309 struct resource *dsi_mem;
5310 struct resource *res;
5312 dsi = devm_kzalloc(dev, sizeof(*dsi), GFP_KERNEL);
5318 dev_set_drvdata(dev, dsi);
5320 spin_lock_init(&dsi->irq_lock);
5321 spin_lock_init(&dsi->errors_lock);
5324 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
5325 spin_lock_init(&dsi->irq_stats_lock);
5326 dsi->irq_stats.last_reset = jiffies;
5329 mutex_init(&dsi->lock);
5330 sema_init(&dsi->bus_lock, 1);
5332 INIT_DEFERRABLE_WORK(&dsi->framedone_timeout_work,
5333 dsi_framedone_timeout_work_callback);
5335 #ifdef DSI_CATCH_MISSING_TE
5336 timer_setup(&dsi->te_timer, dsi_te_timeout, 0);
5339 dsi_mem = platform_get_resource_byname(pdev, IORESOURCE_MEM, "proto");
5340 dsi->proto_base = devm_ioremap_resource(dev, dsi_mem);
5341 if (IS_ERR(dsi->proto_base))
5342 return PTR_ERR(dsi->proto_base);
5344 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "phy");
5345 dsi->phy_base = devm_ioremap_resource(dev, res);
5346 if (IS_ERR(dsi->phy_base))
5347 return PTR_ERR(dsi->phy_base);
5349 res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "pll");
5350 dsi->pll_base = devm_ioremap_resource(dev, res);
5351 if (IS_ERR(dsi->pll_base))
5352 return PTR_ERR(dsi->pll_base);
5354 dsi->irq = platform_get_irq(pdev, 0);
5356 DSSERR("platform_get_irq failed\n");
5360 r = devm_request_irq(dev, dsi->irq, omap_dsi_irq_handler,
5361 IRQF_SHARED, dev_name(dev), dsi);
5363 DSSERR("request_irq failed\n");
5367 soc = soc_device_match(dsi_soc_devices);
5369 dsi->data = soc->data;
5371 dsi->data = of_match_node(dsi_of_match, dev->of_node)->data;
5373 d = dsi->data->modules;
5374 while (d->address != 0 && d->address != dsi_mem->start)
5377 if (d->address == 0) {
5378 DSSERR("unsupported DSI module\n");
5382 dsi->module_id = d->id;
5384 if (dsi->data->model == DSI_MODEL_OMAP4 ||
5385 dsi->data->model == DSI_MODEL_OMAP5) {
5386 struct device_node *np;
5389 * The OMAP4/5 display DT bindings don't reference the padconf
5390 * syscon. Our only option to retrieve it is to find it by name.
5392 np = of_find_node_by_name(NULL,
5393 dsi->data->model == DSI_MODEL_OMAP4 ?
5394 "omap4_padconf_global" : "omap5_padconf_global");
5398 dsi->syscon = syscon_node_to_regmap(np);
5402 /* DSI VCs initialization */
5403 for (i = 0; i < ARRAY_SIZE(dsi->vc); i++) {
5404 dsi->vc[i].source = DSI_VC_SOURCE_L4;
5405 dsi->vc[i].dssdev = NULL;
5406 dsi->vc[i].vc_id = 0;
5409 r = dsi_get_clocks(dsi);
5413 dsi_init_pll_data(dss, dsi);
5415 pm_runtime_enable(dev);
5417 r = dsi_runtime_get(dsi);
5419 goto err_runtime_get;
5421 rev = dsi_read_reg(dsi, DSI_REVISION);
5422 dev_dbg(dev, "OMAP DSI rev %d.%d\n",
5423 FLD_GET(rev, 7, 4), FLD_GET(rev, 3, 0));
5425 /* DSI on OMAP3 doesn't have register DSI_GNQ, set number
5426 * of data to 3 by default */
5427 if (dsi->data->quirks & DSI_QUIRK_GNQ)
5429 dsi->num_lanes_supported = 1 + REG_GET(dsi, DSI_GNQ, 11, 9);
5431 dsi->num_lanes_supported = 3;
5433 dsi->line_buffer_size = dsi_get_line_buf_size(dsi);
5435 dsi_init_output(dsi);
5437 r = dsi_probe_of(dsi);
5439 DSSERR("Invalid DSI DT data\n");
5443 r = of_platform_populate(dev->of_node, NULL, NULL, dev);
5445 DSSERR("Failed to populate DSI child devices: %d\n", r);
5447 dsi_runtime_put(dsi);
5449 if (dsi->module_id == 0)
5450 dsi->debugfs.regs = dss_debugfs_create_file(dss, "dsi1_regs",
5454 dsi->debugfs.regs = dss_debugfs_create_file(dss, "dsi2_regs",
5457 #ifdef CONFIG_OMAP2_DSS_COLLECT_IRQ_STATS
5458 if (dsi->module_id == 0)
5459 dsi->debugfs.irqs = dss_debugfs_create_file(dss, "dsi1_irqs",
5463 dsi->debugfs.irqs = dss_debugfs_create_file(dss, "dsi2_irqs",
5471 dsi_uninit_output(dsi);
5472 dsi_runtime_put(dsi);
5475 pm_runtime_disable(dev);
5479 static void dsi_unbind(struct device *dev, struct device *master, void *data)
5481 struct dsi_data *dsi = dev_get_drvdata(dev);
5483 dss_debugfs_remove_file(dsi->debugfs.irqs);
5484 dss_debugfs_remove_file(dsi->debugfs.regs);
5486 of_platform_depopulate(dev);
5488 WARN_ON(dsi->scp_clk_refcount > 0);
5490 dss_pll_unregister(&dsi->pll);
5492 dsi_uninit_output(dsi);
5494 pm_runtime_disable(dev);
5496 if (dsi->vdds_dsi_reg != NULL && dsi->vdds_dsi_enabled) {
5497 regulator_disable(dsi->vdds_dsi_reg);
5498 dsi->vdds_dsi_enabled = false;
5502 static const struct component_ops dsi_component_ops = {
5504 .unbind = dsi_unbind,
5507 static int dsi_probe(struct platform_device *pdev)
5509 return component_add(&pdev->dev, &dsi_component_ops);
5512 static int dsi_remove(struct platform_device *pdev)
5514 component_del(&pdev->dev, &dsi_component_ops);
5518 static int dsi_runtime_suspend(struct device *dev)
5520 struct dsi_data *dsi = dev_get_drvdata(dev);
5522 dsi->is_enabled = false;
5523 /* ensure the irq handler sees the is_enabled value */
5525 /* wait for current handler to finish before turning the DSI off */
5526 synchronize_irq(dsi->irq);
5528 dispc_runtime_put(dsi->dss->dispc);
5533 static int dsi_runtime_resume(struct device *dev)
5535 struct dsi_data *dsi = dev_get_drvdata(dev);
5538 r = dispc_runtime_get(dsi->dss->dispc);
5542 dsi->is_enabled = true;
5543 /* ensure the irq handler sees the is_enabled value */
5549 static const struct dev_pm_ops dsi_pm_ops = {
5550 .runtime_suspend = dsi_runtime_suspend,
5551 .runtime_resume = dsi_runtime_resume,
5554 struct platform_driver omap_dsihw_driver = {
5556 .remove = dsi_remove,
5558 .name = "omapdss_dsi",
5560 .of_match_table = dsi_of_match,
5561 .suppress_bind_attrs = true,