Merge tag 'char-misc-4.20-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/gregk...
[sfrench/cifs-2.6.git] / drivers / gpu / drm / omapdrm / dss / venc.c
1 /*
2  * Copyright (C) 2009 Nokia Corporation
3  * Author: Tomi Valkeinen <tomi.valkeinen@ti.com>
4  *
5  * VENC settings from TI's DSS driver
6  *
7  * This program is free software; you can redistribute it and/or modify it
8  * under the terms of the GNU General Public License version 2 as published by
9  * the Free Software Foundation.
10  *
11  * This program is distributed in the hope that it will be useful, but WITHOUT
12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
14  * more details.
15  *
16  * You should have received a copy of the GNU General Public License along with
17  * this program.  If not, see <http://www.gnu.org/licenses/>.
18  */
19
20 #define DSS_SUBSYS_NAME "VENC"
21
22 #include <linux/kernel.h>
23 #include <linux/module.h>
24 #include <linux/clk.h>
25 #include <linux/err.h>
26 #include <linux/io.h>
27 #include <linux/mutex.h>
28 #include <linux/completion.h>
29 #include <linux/delay.h>
30 #include <linux/string.h>
31 #include <linux/seq_file.h>
32 #include <linux/platform_device.h>
33 #include <linux/regulator/consumer.h>
34 #include <linux/pm_runtime.h>
35 #include <linux/of.h>
36 #include <linux/of_graph.h>
37 #include <linux/component.h>
38 #include <linux/sys_soc.h>
39
40 #include "omapdss.h"
41 #include "dss.h"
42
43 /* Venc registers */
44 #define VENC_REV_ID                             0x00
45 #define VENC_STATUS                             0x04
46 #define VENC_F_CONTROL                          0x08
47 #define VENC_VIDOUT_CTRL                        0x10
48 #define VENC_SYNC_CTRL                          0x14
49 #define VENC_LLEN                               0x1C
50 #define VENC_FLENS                              0x20
51 #define VENC_HFLTR_CTRL                         0x24
52 #define VENC_CC_CARR_WSS_CARR                   0x28
53 #define VENC_C_PHASE                            0x2C
54 #define VENC_GAIN_U                             0x30
55 #define VENC_GAIN_V                             0x34
56 #define VENC_GAIN_Y                             0x38
57 #define VENC_BLACK_LEVEL                        0x3C
58 #define VENC_BLANK_LEVEL                        0x40
59 #define VENC_X_COLOR                            0x44
60 #define VENC_M_CONTROL                          0x48
61 #define VENC_BSTAMP_WSS_DATA                    0x4C
62 #define VENC_S_CARR                             0x50
63 #define VENC_LINE21                             0x54
64 #define VENC_LN_SEL                             0x58
65 #define VENC_L21__WC_CTL                        0x5C
66 #define VENC_HTRIGGER_VTRIGGER                  0x60
67 #define VENC_SAVID__EAVID                       0x64
68 #define VENC_FLEN__FAL                          0x68
69 #define VENC_LAL__PHASE_RESET                   0x6C
70 #define VENC_HS_INT_START_STOP_X                0x70
71 #define VENC_HS_EXT_START_STOP_X                0x74
72 #define VENC_VS_INT_START_X                     0x78
73 #define VENC_VS_INT_STOP_X__VS_INT_START_Y      0x7C
74 #define VENC_VS_INT_STOP_Y__VS_EXT_START_X      0x80
75 #define VENC_VS_EXT_STOP_X__VS_EXT_START_Y      0x84
76 #define VENC_VS_EXT_STOP_Y                      0x88
77 #define VENC_AVID_START_STOP_X                  0x90
78 #define VENC_AVID_START_STOP_Y                  0x94
79 #define VENC_FID_INT_START_X__FID_INT_START_Y   0xA0
80 #define VENC_FID_INT_OFFSET_Y__FID_EXT_START_X  0xA4
81 #define VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y  0xA8
82 #define VENC_TVDETGP_INT_START_STOP_X           0xB0
83 #define VENC_TVDETGP_INT_START_STOP_Y           0xB4
84 #define VENC_GEN_CTRL                           0xB8
85 #define VENC_OUTPUT_CONTROL                     0xC4
86 #define VENC_OUTPUT_TEST                        0xC8
87 #define VENC_DAC_B__DAC_C                       0xC8
88
89 struct venc_config {
90         u32 f_control;
91         u32 vidout_ctrl;
92         u32 sync_ctrl;
93         u32 llen;
94         u32 flens;
95         u32 hfltr_ctrl;
96         u32 cc_carr_wss_carr;
97         u32 c_phase;
98         u32 gain_u;
99         u32 gain_v;
100         u32 gain_y;
101         u32 black_level;
102         u32 blank_level;
103         u32 x_color;
104         u32 m_control;
105         u32 bstamp_wss_data;
106         u32 s_carr;
107         u32 line21;
108         u32 ln_sel;
109         u32 l21__wc_ctl;
110         u32 htrigger_vtrigger;
111         u32 savid__eavid;
112         u32 flen__fal;
113         u32 lal__phase_reset;
114         u32 hs_int_start_stop_x;
115         u32 hs_ext_start_stop_x;
116         u32 vs_int_start_x;
117         u32 vs_int_stop_x__vs_int_start_y;
118         u32 vs_int_stop_y__vs_ext_start_x;
119         u32 vs_ext_stop_x__vs_ext_start_y;
120         u32 vs_ext_stop_y;
121         u32 avid_start_stop_x;
122         u32 avid_start_stop_y;
123         u32 fid_int_start_x__fid_int_start_y;
124         u32 fid_int_offset_y__fid_ext_start_x;
125         u32 fid_ext_start_y__fid_ext_offset_y;
126         u32 tvdetgp_int_start_stop_x;
127         u32 tvdetgp_int_start_stop_y;
128         u32 gen_ctrl;
129 };
130
131 /* from TRM */
132 static const struct venc_config venc_config_pal_trm = {
133         .f_control                              = 0,
134         .vidout_ctrl                            = 1,
135         .sync_ctrl                              = 0x40,
136         .llen                                   = 0x35F, /* 863 */
137         .flens                                  = 0x270, /* 624 */
138         .hfltr_ctrl                             = 0,
139         .cc_carr_wss_carr                       = 0x2F7225ED,
140         .c_phase                                = 0,
141         .gain_u                                 = 0x111,
142         .gain_v                                 = 0x181,
143         .gain_y                                 = 0x140,
144         .black_level                            = 0x3B,
145         .blank_level                            = 0x3B,
146         .x_color                                = 0x7,
147         .m_control                              = 0x2,
148         .bstamp_wss_data                        = 0x3F,
149         .s_carr                                 = 0x2A098ACB,
150         .line21                                 = 0,
151         .ln_sel                                 = 0x01290015,
152         .l21__wc_ctl                            = 0x0000F603,
153         .htrigger_vtrigger                      = 0,
154
155         .savid__eavid                           = 0x06A70108,
156         .flen__fal                              = 0x00180270,
157         .lal__phase_reset                       = 0x00040135,
158         .hs_int_start_stop_x                    = 0x00880358,
159         .hs_ext_start_stop_x                    = 0x000F035F,
160         .vs_int_start_x                         = 0x01A70000,
161         .vs_int_stop_x__vs_int_start_y          = 0x000001A7,
162         .vs_int_stop_y__vs_ext_start_x          = 0x01AF0000,
163         .vs_ext_stop_x__vs_ext_start_y          = 0x000101AF,
164         .vs_ext_stop_y                          = 0x00000025,
165         .avid_start_stop_x                      = 0x03530083,
166         .avid_start_stop_y                      = 0x026C002E,
167         .fid_int_start_x__fid_int_start_y       = 0x0001008A,
168         .fid_int_offset_y__fid_ext_start_x      = 0x002E0138,
169         .fid_ext_start_y__fid_ext_offset_y      = 0x01380001,
170
171         .tvdetgp_int_start_stop_x               = 0x00140001,
172         .tvdetgp_int_start_stop_y               = 0x00010001,
173         .gen_ctrl                               = 0x00FF0000,
174 };
175
176 /* from TRM */
177 static const struct venc_config venc_config_ntsc_trm = {
178         .f_control                              = 0,
179         .vidout_ctrl                            = 1,
180         .sync_ctrl                              = 0x8040,
181         .llen                                   = 0x359,
182         .flens                                  = 0x20C,
183         .hfltr_ctrl                             = 0,
184         .cc_carr_wss_carr                       = 0x043F2631,
185         .c_phase                                = 0,
186         .gain_u                                 = 0x102,
187         .gain_v                                 = 0x16C,
188         .gain_y                                 = 0x12F,
189         .black_level                            = 0x43,
190         .blank_level                            = 0x38,
191         .x_color                                = 0x7,
192         .m_control                              = 0x1,
193         .bstamp_wss_data                        = 0x38,
194         .s_carr                                 = 0x21F07C1F,
195         .line21                                 = 0,
196         .ln_sel                                 = 0x01310011,
197         .l21__wc_ctl                            = 0x0000F003,
198         .htrigger_vtrigger                      = 0,
199
200         .savid__eavid                           = 0x069300F4,
201         .flen__fal                              = 0x0016020C,
202         .lal__phase_reset                       = 0x00060107,
203         .hs_int_start_stop_x                    = 0x008E0350,
204         .hs_ext_start_stop_x                    = 0x000F0359,
205         .vs_int_start_x                         = 0x01A00000,
206         .vs_int_stop_x__vs_int_start_y          = 0x020701A0,
207         .vs_int_stop_y__vs_ext_start_x          = 0x01AC0024,
208         .vs_ext_stop_x__vs_ext_start_y          = 0x020D01AC,
209         .vs_ext_stop_y                          = 0x00000006,
210         .avid_start_stop_x                      = 0x03480078,
211         .avid_start_stop_y                      = 0x02060024,
212         .fid_int_start_x__fid_int_start_y       = 0x0001008A,
213         .fid_int_offset_y__fid_ext_start_x      = 0x01AC0106,
214         .fid_ext_start_y__fid_ext_offset_y      = 0x01060006,
215
216         .tvdetgp_int_start_stop_x               = 0x00140001,
217         .tvdetgp_int_start_stop_y               = 0x00010001,
218         .gen_ctrl                               = 0x00F90000,
219 };
220
221 static const struct venc_config venc_config_pal_bdghi = {
222         .f_control                              = 0,
223         .vidout_ctrl                            = 0,
224         .sync_ctrl                              = 0,
225         .hfltr_ctrl                             = 0,
226         .x_color                                = 0,
227         .line21                                 = 0,
228         .ln_sel                                 = 21,
229         .htrigger_vtrigger                      = 0,
230         .tvdetgp_int_start_stop_x               = 0x00140001,
231         .tvdetgp_int_start_stop_y               = 0x00010001,
232         .gen_ctrl                               = 0x00FB0000,
233
234         .llen                                   = 864-1,
235         .flens                                  = 625-1,
236         .cc_carr_wss_carr                       = 0x2F7625ED,
237         .c_phase                                = 0xDF,
238         .gain_u                                 = 0x111,
239         .gain_v                                 = 0x181,
240         .gain_y                                 = 0x140,
241         .black_level                            = 0x3e,
242         .blank_level                            = 0x3e,
243         .m_control                              = 0<<2 | 1<<1,
244         .bstamp_wss_data                        = 0x42,
245         .s_carr                                 = 0x2a098acb,
246         .l21__wc_ctl                            = 0<<13 | 0x16<<8 | 0<<0,
247         .savid__eavid                           = 0x06A70108,
248         .flen__fal                              = 23<<16 | 624<<0,
249         .lal__phase_reset                       = 2<<17 | 310<<0,
250         .hs_int_start_stop_x                    = 0x00920358,
251         .hs_ext_start_stop_x                    = 0x000F035F,
252         .vs_int_start_x                         = 0x1a7<<16,
253         .vs_int_stop_x__vs_int_start_y          = 0x000601A7,
254         .vs_int_stop_y__vs_ext_start_x          = 0x01AF0036,
255         .vs_ext_stop_x__vs_ext_start_y          = 0x27101af,
256         .vs_ext_stop_y                          = 0x05,
257         .avid_start_stop_x                      = 0x03530082,
258         .avid_start_stop_y                      = 0x0270002E,
259         .fid_int_start_x__fid_int_start_y       = 0x0005008A,
260         .fid_int_offset_y__fid_ext_start_x      = 0x002E0138,
261         .fid_ext_start_y__fid_ext_offset_y      = 0x01380005,
262 };
263
264 enum venc_videomode {
265         VENC_MODE_UNKNOWN,
266         VENC_MODE_PAL,
267         VENC_MODE_NTSC,
268 };
269
270 static const struct videomode omap_dss_pal_vm = {
271         .hactive        = 720,
272         .vactive        = 574,
273         .pixelclock     = 13500000,
274         .hsync_len      = 64,
275         .hfront_porch   = 12,
276         .hback_porch    = 68,
277         .vsync_len      = 5,
278         .vfront_porch   = 5,
279         .vback_porch    = 41,
280
281         .flags          = DISPLAY_FLAGS_INTERLACED | DISPLAY_FLAGS_HSYNC_LOW |
282                           DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_DE_HIGH |
283                           DISPLAY_FLAGS_PIXDATA_POSEDGE |
284                           DISPLAY_FLAGS_SYNC_NEGEDGE,
285 };
286
287 static const struct videomode omap_dss_ntsc_vm = {
288         .hactive        = 720,
289         .vactive        = 482,
290         .pixelclock     = 13500000,
291         .hsync_len      = 64,
292         .hfront_porch   = 16,
293         .hback_porch    = 58,
294         .vsync_len      = 6,
295         .vfront_porch   = 6,
296         .vback_porch    = 31,
297
298         .flags          = DISPLAY_FLAGS_INTERLACED | DISPLAY_FLAGS_HSYNC_LOW |
299                           DISPLAY_FLAGS_VSYNC_LOW | DISPLAY_FLAGS_DE_HIGH |
300                           DISPLAY_FLAGS_PIXDATA_POSEDGE |
301                           DISPLAY_FLAGS_SYNC_NEGEDGE,
302 };
303
304 static enum venc_videomode venc_get_videomode(const struct videomode *vm)
305 {
306         if (!(vm->flags & DISPLAY_FLAGS_INTERLACED))
307                 return VENC_MODE_UNKNOWN;
308
309         if (vm->pixelclock == omap_dss_pal_vm.pixelclock &&
310             vm->hactive == omap_dss_pal_vm.hactive &&
311             vm->vactive == omap_dss_pal_vm.vactive)
312                 return VENC_MODE_PAL;
313
314         if (vm->pixelclock == omap_dss_ntsc_vm.pixelclock &&
315             vm->hactive == omap_dss_ntsc_vm.hactive &&
316             vm->vactive == omap_dss_ntsc_vm.vactive)
317                 return VENC_MODE_NTSC;
318
319         return VENC_MODE_UNKNOWN;
320 }
321
322 struct venc_device {
323         struct platform_device *pdev;
324         void __iomem *base;
325         struct mutex venc_lock;
326         u32 wss_data;
327         struct regulator *vdda_dac_reg;
328         struct dss_device *dss;
329
330         struct dss_debugfs_entry *debugfs;
331
332         struct clk      *tv_dac_clk;
333
334         struct videomode vm;
335         enum omap_dss_venc_type type;
336         bool invert_polarity;
337         bool requires_tv_dac_clk;
338
339         struct omap_dss_device output;
340 };
341
342 #define dssdev_to_venc(dssdev) container_of(dssdev, struct venc_device, output)
343
344 static inline void venc_write_reg(struct venc_device *venc, int idx, u32 val)
345 {
346         __raw_writel(val, venc->base + idx);
347 }
348
349 static inline u32 venc_read_reg(struct venc_device *venc, int idx)
350 {
351         u32 l = __raw_readl(venc->base + idx);
352         return l;
353 }
354
355 static void venc_write_config(struct venc_device *venc,
356                               const struct venc_config *config)
357 {
358         DSSDBG("write venc conf\n");
359
360         venc_write_reg(venc, VENC_LLEN, config->llen);
361         venc_write_reg(venc, VENC_FLENS, config->flens);
362         venc_write_reg(venc, VENC_CC_CARR_WSS_CARR, config->cc_carr_wss_carr);
363         venc_write_reg(venc, VENC_C_PHASE, config->c_phase);
364         venc_write_reg(venc, VENC_GAIN_U, config->gain_u);
365         venc_write_reg(venc, VENC_GAIN_V, config->gain_v);
366         venc_write_reg(venc, VENC_GAIN_Y, config->gain_y);
367         venc_write_reg(venc, VENC_BLACK_LEVEL, config->black_level);
368         venc_write_reg(venc, VENC_BLANK_LEVEL, config->blank_level);
369         venc_write_reg(venc, VENC_M_CONTROL, config->m_control);
370         venc_write_reg(venc, VENC_BSTAMP_WSS_DATA, config->bstamp_wss_data |
371                        venc->wss_data);
372         venc_write_reg(venc, VENC_S_CARR, config->s_carr);
373         venc_write_reg(venc, VENC_L21__WC_CTL, config->l21__wc_ctl);
374         venc_write_reg(venc, VENC_SAVID__EAVID, config->savid__eavid);
375         venc_write_reg(venc, VENC_FLEN__FAL, config->flen__fal);
376         venc_write_reg(venc, VENC_LAL__PHASE_RESET, config->lal__phase_reset);
377         venc_write_reg(venc, VENC_HS_INT_START_STOP_X,
378                        config->hs_int_start_stop_x);
379         venc_write_reg(venc, VENC_HS_EXT_START_STOP_X,
380                        config->hs_ext_start_stop_x);
381         venc_write_reg(venc, VENC_VS_INT_START_X, config->vs_int_start_x);
382         venc_write_reg(venc, VENC_VS_INT_STOP_X__VS_INT_START_Y,
383                        config->vs_int_stop_x__vs_int_start_y);
384         venc_write_reg(venc, VENC_VS_INT_STOP_Y__VS_EXT_START_X,
385                        config->vs_int_stop_y__vs_ext_start_x);
386         venc_write_reg(venc, VENC_VS_EXT_STOP_X__VS_EXT_START_Y,
387                        config->vs_ext_stop_x__vs_ext_start_y);
388         venc_write_reg(venc, VENC_VS_EXT_STOP_Y, config->vs_ext_stop_y);
389         venc_write_reg(venc, VENC_AVID_START_STOP_X, config->avid_start_stop_x);
390         venc_write_reg(venc, VENC_AVID_START_STOP_Y, config->avid_start_stop_y);
391         venc_write_reg(venc, VENC_FID_INT_START_X__FID_INT_START_Y,
392                        config->fid_int_start_x__fid_int_start_y);
393         venc_write_reg(venc, VENC_FID_INT_OFFSET_Y__FID_EXT_START_X,
394                        config->fid_int_offset_y__fid_ext_start_x);
395         venc_write_reg(venc, VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y,
396                        config->fid_ext_start_y__fid_ext_offset_y);
397
398         venc_write_reg(venc, VENC_DAC_B__DAC_C,
399                        venc_read_reg(venc, VENC_DAC_B__DAC_C));
400         venc_write_reg(venc, VENC_VIDOUT_CTRL, config->vidout_ctrl);
401         venc_write_reg(venc, VENC_HFLTR_CTRL, config->hfltr_ctrl);
402         venc_write_reg(venc, VENC_X_COLOR, config->x_color);
403         venc_write_reg(venc, VENC_LINE21, config->line21);
404         venc_write_reg(venc, VENC_LN_SEL, config->ln_sel);
405         venc_write_reg(venc, VENC_HTRIGGER_VTRIGGER, config->htrigger_vtrigger);
406         venc_write_reg(venc, VENC_TVDETGP_INT_START_STOP_X,
407                        config->tvdetgp_int_start_stop_x);
408         venc_write_reg(venc, VENC_TVDETGP_INT_START_STOP_Y,
409                        config->tvdetgp_int_start_stop_y);
410         venc_write_reg(venc, VENC_GEN_CTRL, config->gen_ctrl);
411         venc_write_reg(venc, VENC_F_CONTROL, config->f_control);
412         venc_write_reg(venc, VENC_SYNC_CTRL, config->sync_ctrl);
413 }
414
415 static void venc_reset(struct venc_device *venc)
416 {
417         int t = 1000;
418
419         venc_write_reg(venc, VENC_F_CONTROL, 1<<8);
420         while (venc_read_reg(venc, VENC_F_CONTROL) & (1<<8)) {
421                 if (--t == 0) {
422                         DSSERR("Failed to reset venc\n");
423                         return;
424                 }
425         }
426
427 #ifdef CONFIG_OMAP2_DSS_SLEEP_AFTER_VENC_RESET
428         /* the magical sleep that makes things work */
429         /* XXX more info? What bug this circumvents? */
430         msleep(20);
431 #endif
432 }
433
434 static int venc_runtime_get(struct venc_device *venc)
435 {
436         int r;
437
438         DSSDBG("venc_runtime_get\n");
439
440         r = pm_runtime_get_sync(&venc->pdev->dev);
441         WARN_ON(r < 0);
442         return r < 0 ? r : 0;
443 }
444
445 static void venc_runtime_put(struct venc_device *venc)
446 {
447         int r;
448
449         DSSDBG("venc_runtime_put\n");
450
451         r = pm_runtime_put_sync(&venc->pdev->dev);
452         WARN_ON(r < 0 && r != -ENOSYS);
453 }
454
455 static const struct venc_config *venc_timings_to_config(const struct videomode *vm)
456 {
457         switch (venc_get_videomode(vm)) {
458         default:
459                 WARN_ON_ONCE(1);
460         case VENC_MODE_PAL:
461                 return &venc_config_pal_trm;
462         case VENC_MODE_NTSC:
463                 return &venc_config_ntsc_trm;
464         }
465 }
466
467 static int venc_power_on(struct venc_device *venc)
468 {
469         u32 l;
470         int r;
471
472         r = venc_runtime_get(venc);
473         if (r)
474                 goto err0;
475
476         venc_reset(venc);
477         venc_write_config(venc, venc_timings_to_config(&venc->vm));
478
479         dss_set_venc_output(venc->dss, venc->type);
480         dss_set_dac_pwrdn_bgz(venc->dss, 1);
481
482         l = 0;
483
484         if (venc->type == OMAP_DSS_VENC_TYPE_COMPOSITE)
485                 l |= 1 << 1;
486         else /* S-Video */
487                 l |= (1 << 0) | (1 << 2);
488
489         if (venc->invert_polarity == false)
490                 l |= 1 << 3;
491
492         venc_write_reg(venc, VENC_OUTPUT_CONTROL, l);
493
494         r = regulator_enable(venc->vdda_dac_reg);
495         if (r)
496                 goto err1;
497
498         r = dss_mgr_enable(&venc->output);
499         if (r)
500                 goto err2;
501
502         return 0;
503
504 err2:
505         regulator_disable(venc->vdda_dac_reg);
506 err1:
507         venc_write_reg(venc, VENC_OUTPUT_CONTROL, 0);
508         dss_set_dac_pwrdn_bgz(venc->dss, 0);
509
510         venc_runtime_put(venc);
511 err0:
512         return r;
513 }
514
515 static void venc_power_off(struct venc_device *venc)
516 {
517         venc_write_reg(venc, VENC_OUTPUT_CONTROL, 0);
518         dss_set_dac_pwrdn_bgz(venc->dss, 0);
519
520         dss_mgr_disable(&venc->output);
521
522         regulator_disable(venc->vdda_dac_reg);
523
524         venc_runtime_put(venc);
525 }
526
527 static int venc_display_enable(struct omap_dss_device *dssdev)
528 {
529         struct venc_device *venc = dssdev_to_venc(dssdev);
530         int r;
531
532         DSSDBG("venc_display_enable\n");
533
534         mutex_lock(&venc->venc_lock);
535
536         if (!dssdev->dispc_channel_connected) {
537                 DSSERR("Failed to enable display: no output/manager\n");
538                 r = -ENODEV;
539                 goto err0;
540         }
541
542         r = venc_power_on(venc);
543         if (r)
544                 goto err0;
545
546         venc->wss_data = 0;
547
548         mutex_unlock(&venc->venc_lock);
549
550         return 0;
551 err0:
552         mutex_unlock(&venc->venc_lock);
553         return r;
554 }
555
556 static void venc_display_disable(struct omap_dss_device *dssdev)
557 {
558         struct venc_device *venc = dssdev_to_venc(dssdev);
559
560         DSSDBG("venc_display_disable\n");
561
562         mutex_lock(&venc->venc_lock);
563
564         venc_power_off(venc);
565
566         mutex_unlock(&venc->venc_lock);
567 }
568
569 static void venc_get_timings(struct omap_dss_device *dssdev,
570                              struct videomode *vm)
571 {
572         struct venc_device *venc = dssdev_to_venc(dssdev);
573
574         mutex_lock(&venc->venc_lock);
575         *vm = venc->vm;
576         mutex_unlock(&venc->venc_lock);
577 }
578
579 static void venc_set_timings(struct omap_dss_device *dssdev,
580                              const struct videomode *vm)
581 {
582         struct venc_device *venc = dssdev_to_venc(dssdev);
583
584         DSSDBG("venc_set_timings\n");
585
586         mutex_lock(&venc->venc_lock);
587
588         /* Reset WSS data when the TV standard changes. */
589         if (memcmp(&venc->vm, vm, sizeof(*vm)))
590                 venc->wss_data = 0;
591
592         venc->vm = *vm;
593
594         dispc_set_tv_pclk(venc->dss->dispc, 13500000);
595
596         mutex_unlock(&venc->venc_lock);
597 }
598
599 static int venc_check_timings(struct omap_dss_device *dssdev,
600                               struct videomode *vm)
601 {
602         DSSDBG("venc_check_timings\n");
603
604         switch (venc_get_videomode(vm)) {
605         case VENC_MODE_PAL:
606                 *vm = omap_dss_pal_vm;
607                 return 0;
608
609         case VENC_MODE_NTSC:
610                 *vm = omap_dss_ntsc_vm;
611                 return 0;
612
613         default:
614                 return -EINVAL;
615         }
616 }
617
618 static int venc_dump_regs(struct seq_file *s, void *p)
619 {
620         struct venc_device *venc = s->private;
621
622 #define DUMPREG(venc, r) \
623         seq_printf(s, "%-35s %08x\n", #r, venc_read_reg(venc, r))
624
625         if (venc_runtime_get(venc))
626                 return 0;
627
628         DUMPREG(venc, VENC_F_CONTROL);
629         DUMPREG(venc, VENC_VIDOUT_CTRL);
630         DUMPREG(venc, VENC_SYNC_CTRL);
631         DUMPREG(venc, VENC_LLEN);
632         DUMPREG(venc, VENC_FLENS);
633         DUMPREG(venc, VENC_HFLTR_CTRL);
634         DUMPREG(venc, VENC_CC_CARR_WSS_CARR);
635         DUMPREG(venc, VENC_C_PHASE);
636         DUMPREG(venc, VENC_GAIN_U);
637         DUMPREG(venc, VENC_GAIN_V);
638         DUMPREG(venc, VENC_GAIN_Y);
639         DUMPREG(venc, VENC_BLACK_LEVEL);
640         DUMPREG(venc, VENC_BLANK_LEVEL);
641         DUMPREG(venc, VENC_X_COLOR);
642         DUMPREG(venc, VENC_M_CONTROL);
643         DUMPREG(venc, VENC_BSTAMP_WSS_DATA);
644         DUMPREG(venc, VENC_S_CARR);
645         DUMPREG(venc, VENC_LINE21);
646         DUMPREG(venc, VENC_LN_SEL);
647         DUMPREG(venc, VENC_L21__WC_CTL);
648         DUMPREG(venc, VENC_HTRIGGER_VTRIGGER);
649         DUMPREG(venc, VENC_SAVID__EAVID);
650         DUMPREG(venc, VENC_FLEN__FAL);
651         DUMPREG(venc, VENC_LAL__PHASE_RESET);
652         DUMPREG(venc, VENC_HS_INT_START_STOP_X);
653         DUMPREG(venc, VENC_HS_EXT_START_STOP_X);
654         DUMPREG(venc, VENC_VS_INT_START_X);
655         DUMPREG(venc, VENC_VS_INT_STOP_X__VS_INT_START_Y);
656         DUMPREG(venc, VENC_VS_INT_STOP_Y__VS_EXT_START_X);
657         DUMPREG(venc, VENC_VS_EXT_STOP_X__VS_EXT_START_Y);
658         DUMPREG(venc, VENC_VS_EXT_STOP_Y);
659         DUMPREG(venc, VENC_AVID_START_STOP_X);
660         DUMPREG(venc, VENC_AVID_START_STOP_Y);
661         DUMPREG(venc, VENC_FID_INT_START_X__FID_INT_START_Y);
662         DUMPREG(venc, VENC_FID_INT_OFFSET_Y__FID_EXT_START_X);
663         DUMPREG(venc, VENC_FID_EXT_START_Y__FID_EXT_OFFSET_Y);
664         DUMPREG(venc, VENC_TVDETGP_INT_START_STOP_X);
665         DUMPREG(venc, VENC_TVDETGP_INT_START_STOP_Y);
666         DUMPREG(venc, VENC_GEN_CTRL);
667         DUMPREG(venc, VENC_OUTPUT_CONTROL);
668         DUMPREG(venc, VENC_OUTPUT_TEST);
669
670         venc_runtime_put(venc);
671
672 #undef DUMPREG
673         return 0;
674 }
675
676 static int venc_get_clocks(struct venc_device *venc)
677 {
678         struct clk *clk;
679
680         if (venc->requires_tv_dac_clk) {
681                 clk = devm_clk_get(&venc->pdev->dev, "tv_dac_clk");
682                 if (IS_ERR(clk)) {
683                         DSSERR("can't get tv_dac_clk\n");
684                         return PTR_ERR(clk);
685                 }
686         } else {
687                 clk = NULL;
688         }
689
690         venc->tv_dac_clk = clk;
691
692         return 0;
693 }
694
695 static int venc_connect(struct omap_dss_device *src,
696                         struct omap_dss_device *dst)
697 {
698         int r;
699
700         r = omapdss_device_connect(dst->dss, dst, dst->next);
701         if (r)
702                 return r;
703
704         dst->dispc_channel_connected = true;
705         return 0;
706 }
707
708 static void venc_disconnect(struct omap_dss_device *src,
709                             struct omap_dss_device *dst)
710 {
711         dst->dispc_channel_connected = false;
712
713         omapdss_device_disconnect(dst, dst->next);
714 }
715
716 static const struct omap_dss_device_ops venc_ops = {
717         .connect = venc_connect,
718         .disconnect = venc_disconnect,
719
720         .enable = venc_display_enable,
721         .disable = venc_display_disable,
722
723         .check_timings = venc_check_timings,
724         .get_timings = venc_get_timings,
725         .set_timings = venc_set_timings,
726 };
727
728 /* -----------------------------------------------------------------------------
729  * Component Bind & Unbind
730  */
731
732 static int venc_bind(struct device *dev, struct device *master, void *data)
733 {
734         struct dss_device *dss = dss_get_device(master);
735         struct venc_device *venc = dev_get_drvdata(dev);
736         u8 rev_id;
737         int r;
738
739         venc->dss = dss;
740
741         r = venc_runtime_get(venc);
742         if (r)
743                 return r;
744
745         rev_id = (u8)(venc_read_reg(venc, VENC_REV_ID) & 0xff);
746         dev_dbg(dev, "OMAP VENC rev %d\n", rev_id);
747
748         venc_runtime_put(venc);
749
750         venc->debugfs = dss_debugfs_create_file(dss, "venc", venc_dump_regs,
751                                                 venc);
752
753         return 0;
754 }
755
756 static void venc_unbind(struct device *dev, struct device *master, void *data)
757 {
758         struct venc_device *venc = dev_get_drvdata(dev);
759
760         dss_debugfs_remove_file(venc->debugfs);
761 }
762
763 static const struct component_ops venc_component_ops = {
764         .bind   = venc_bind,
765         .unbind = venc_unbind,
766 };
767
768 /* -----------------------------------------------------------------------------
769  * Probe & Remove, Suspend & Resume
770  */
771
772 static int venc_init_output(struct venc_device *venc)
773 {
774         struct omap_dss_device *out = &venc->output;
775         int r;
776
777         out->dev = &venc->pdev->dev;
778         out->id = OMAP_DSS_OUTPUT_VENC;
779         out->output_type = OMAP_DISPLAY_TYPE_VENC;
780         out->name = "venc.0";
781         out->dispc_channel = OMAP_DSS_CHANNEL_DIGIT;
782         out->ops = &venc_ops;
783         out->owner = THIS_MODULE;
784         out->of_ports = BIT(0);
785
786         out->next = omapdss_of_find_connected_device(out->dev->of_node, 0);
787         if (IS_ERR(out->next)) {
788                 if (PTR_ERR(out->next) != -EPROBE_DEFER)
789                         dev_err(out->dev, "failed to find video sink\n");
790                 return PTR_ERR(out->next);
791         }
792
793         r = omapdss_output_validate(out);
794         if (r) {
795                 omapdss_device_put(out->next);
796                 out->next = NULL;
797                 return r;
798         }
799
800         omapdss_device_register(out);
801
802         return 0;
803 }
804
805 static void venc_uninit_output(struct venc_device *venc)
806 {
807         if (venc->output.next)
808                 omapdss_device_put(venc->output.next);
809         omapdss_device_unregister(&venc->output);
810 }
811
812 static int venc_probe_of(struct venc_device *venc)
813 {
814         struct device_node *node = venc->pdev->dev.of_node;
815         struct device_node *ep;
816         u32 channels;
817         int r;
818
819         ep = of_graph_get_endpoint_by_regs(node, 0, 0);
820         if (!ep)
821                 return 0;
822
823         venc->invert_polarity = of_property_read_bool(ep, "ti,invert-polarity");
824
825         r = of_property_read_u32(ep, "ti,channels", &channels);
826         if (r) {
827                 dev_err(&venc->pdev->dev,
828                         "failed to read property 'ti,channels': %d\n", r);
829                 goto err;
830         }
831
832         switch (channels) {
833         case 1:
834                 venc->type = OMAP_DSS_VENC_TYPE_COMPOSITE;
835                 break;
836         case 2:
837                 venc->type = OMAP_DSS_VENC_TYPE_SVIDEO;
838                 break;
839         default:
840                 dev_err(&venc->pdev->dev, "bad channel propert '%d'\n",
841                         channels);
842                 r = -EINVAL;
843                 goto err;
844         }
845
846         of_node_put(ep);
847
848         return 0;
849
850 err:
851         of_node_put(ep);
852         return r;
853 }
854
855 static const struct soc_device_attribute venc_soc_devices[] = {
856         { .machine = "OMAP3[45]*" },
857         { .machine = "AM35*" },
858         { /* sentinel */ }
859 };
860
861 static int venc_probe(struct platform_device *pdev)
862 {
863         struct venc_device *venc;
864         struct resource *venc_mem;
865         int r;
866
867         venc = kzalloc(sizeof(*venc), GFP_KERNEL);
868         if (!venc)
869                 return -ENOMEM;
870
871         venc->pdev = pdev;
872
873         platform_set_drvdata(pdev, venc);
874
875         /* The OMAP34xx, OMAP35xx and AM35xx VENC require the TV DAC clock. */
876         if (soc_device_match(venc_soc_devices))
877                 venc->requires_tv_dac_clk = true;
878
879         mutex_init(&venc->venc_lock);
880
881         venc->wss_data = 0;
882         venc->vm = omap_dss_pal_vm;
883
884         venc_mem = platform_get_resource(venc->pdev, IORESOURCE_MEM, 0);
885         venc->base = devm_ioremap_resource(&pdev->dev, venc_mem);
886         if (IS_ERR(venc->base)) {
887                 r = PTR_ERR(venc->base);
888                 goto err_free;
889         }
890
891         venc->vdda_dac_reg = devm_regulator_get(&pdev->dev, "vdda");
892         if (IS_ERR(venc->vdda_dac_reg)) {
893                 r = PTR_ERR(venc->vdda_dac_reg);
894                 if (r != -EPROBE_DEFER)
895                         DSSERR("can't get VDDA_DAC regulator\n");
896                 goto err_free;
897         }
898
899         r = venc_get_clocks(venc);
900         if (r)
901                 goto err_free;
902
903         r = venc_probe_of(venc);
904         if (r)
905                 goto err_free;
906
907         pm_runtime_enable(&pdev->dev);
908
909         r = venc_init_output(venc);
910         if (r)
911                 goto err_pm_disable;
912
913         r = component_add(&pdev->dev, &venc_component_ops);
914         if (r)
915                 goto err_uninit_output;
916
917         return 0;
918
919 err_uninit_output:
920         venc_uninit_output(venc);
921 err_pm_disable:
922         pm_runtime_disable(&pdev->dev);
923 err_free:
924         kfree(venc);
925         return r;
926 }
927
928 static int venc_remove(struct platform_device *pdev)
929 {
930         struct venc_device *venc = platform_get_drvdata(pdev);
931
932         component_del(&pdev->dev, &venc_component_ops);
933
934         venc_uninit_output(venc);
935
936         pm_runtime_disable(&pdev->dev);
937
938         kfree(venc);
939         return 0;
940 }
941
942 static int venc_runtime_suspend(struct device *dev)
943 {
944         struct venc_device *venc = dev_get_drvdata(dev);
945
946         if (venc->tv_dac_clk)
947                 clk_disable_unprepare(venc->tv_dac_clk);
948
949         return 0;
950 }
951
952 static int venc_runtime_resume(struct device *dev)
953 {
954         struct venc_device *venc = dev_get_drvdata(dev);
955
956         if (venc->tv_dac_clk)
957                 clk_prepare_enable(venc->tv_dac_clk);
958
959         return 0;
960 }
961
962 static const struct dev_pm_ops venc_pm_ops = {
963         .runtime_suspend = venc_runtime_suspend,
964         .runtime_resume = venc_runtime_resume,
965 };
966
967 static const struct of_device_id venc_of_match[] = {
968         { .compatible = "ti,omap2-venc", },
969         { .compatible = "ti,omap3-venc", },
970         { .compatible = "ti,omap4-venc", },
971         {},
972 };
973
974 struct platform_driver omap_venchw_driver = {
975         .probe          = venc_probe,
976         .remove         = venc_remove,
977         .driver         = {
978                 .name   = "omapdss_venc",
979                 .pm     = &venc_pm_ops,
980                 .of_match_table = venc_of_match,
981                 .suppress_bind_attrs = true,
982         },
983 };