2 * Copyright (C) 2015 Free Electrons
3 * Copyright (C) 2015 NextThing Co
5 * Maxime Ripard <maxime.ripard@free-electrons.com>
7 * This program is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU General Public License as
9 * published by the Free Software Foundation; either version 2 of
10 * the License, or (at your option) any later version.
14 #include <drm/drm_atomic_helper.h>
15 #include <drm/drm_connector.h>
16 #include <drm/drm_crtc.h>
17 #include <drm/drm_crtc_helper.h>
18 #include <drm/drm_encoder.h>
19 #include <drm/drm_modes.h>
20 #include <drm/drm_of.h>
21 #include <drm/drm_panel.h>
23 #include <uapi/drm/drm_mode.h>
25 #include <linux/component.h>
26 #include <linux/ioport.h>
27 #include <linux/of_address.h>
28 #include <linux/of_device.h>
29 #include <linux/of_irq.h>
30 #include <linux/regmap.h>
31 #include <linux/reset.h>
33 #include "sun4i_crtc.h"
34 #include "sun4i_dotclock.h"
35 #include "sun4i_drv.h"
36 #include "sun4i_lvds.h"
37 #include "sun4i_rgb.h"
38 #include "sun4i_tcon.h"
39 #include "sun6i_mipi_dsi.h"
40 #include "sun8i_tcon_top.h"
41 #include "sunxi_engine.h"
43 static struct drm_connector *sun4i_tcon_get_connector(const struct drm_encoder *encoder)
45 struct drm_connector *connector;
46 struct drm_connector_list_iter iter;
48 drm_connector_list_iter_begin(encoder->dev, &iter);
49 drm_for_each_connector_iter(connector, &iter)
50 if (connector->encoder == encoder) {
51 drm_connector_list_iter_end(&iter);
54 drm_connector_list_iter_end(&iter);
59 static int sun4i_tcon_get_pixel_depth(const struct drm_encoder *encoder)
61 struct drm_connector *connector;
62 struct drm_display_info *info;
64 connector = sun4i_tcon_get_connector(encoder);
68 info = &connector->display_info;
69 if (info->num_bus_formats != 1)
72 switch (info->bus_formats[0]) {
73 case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG:
76 case MEDIA_BUS_FMT_RGB888_1X7X4_JEIDA:
77 case MEDIA_BUS_FMT_RGB888_1X7X4_SPWG:
84 static void sun4i_tcon_channel_set_status(struct sun4i_tcon *tcon, int channel,
91 WARN_ON(!tcon->quirks->has_channel_0);
92 regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,
93 SUN4I_TCON0_CTL_TCON_ENABLE,
94 enabled ? SUN4I_TCON0_CTL_TCON_ENABLE : 0);
98 WARN_ON(!tcon->quirks->has_channel_1);
99 regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
100 SUN4I_TCON1_CTL_TCON_ENABLE,
101 enabled ? SUN4I_TCON1_CTL_TCON_ENABLE : 0);
105 DRM_WARN("Unknown channel... doing nothing\n");
110 clk_prepare_enable(clk);
111 clk_rate_exclusive_get(clk);
113 clk_rate_exclusive_put(clk);
114 clk_disable_unprepare(clk);
118 static void sun4i_tcon_lvds_set_status(struct sun4i_tcon *tcon,
119 const struct drm_encoder *encoder,
125 regmap_update_bits(tcon->regs, SUN4I_TCON0_LVDS_IF_REG,
126 SUN4I_TCON0_LVDS_IF_EN,
127 SUN4I_TCON0_LVDS_IF_EN);
130 * As their name suggest, these values only apply to the A31
131 * and later SoCs. We'll have to rework this when merging
132 * support for the older SoCs.
134 regmap_write(tcon->regs, SUN4I_TCON0_LVDS_ANA0_REG,
135 SUN6I_TCON0_LVDS_ANA0_C(2) |
136 SUN6I_TCON0_LVDS_ANA0_V(3) |
137 SUN6I_TCON0_LVDS_ANA0_PD(2) |
138 SUN6I_TCON0_LVDS_ANA0_EN_LDO);
141 regmap_update_bits(tcon->regs, SUN4I_TCON0_LVDS_ANA0_REG,
142 SUN6I_TCON0_LVDS_ANA0_EN_MB,
143 SUN6I_TCON0_LVDS_ANA0_EN_MB);
146 regmap_update_bits(tcon->regs, SUN4I_TCON0_LVDS_ANA0_REG,
147 SUN6I_TCON0_LVDS_ANA0_EN_DRVC,
148 SUN6I_TCON0_LVDS_ANA0_EN_DRVC);
150 if (sun4i_tcon_get_pixel_depth(encoder) == 18)
155 regmap_write_bits(tcon->regs, SUN4I_TCON0_LVDS_ANA0_REG,
156 SUN6I_TCON0_LVDS_ANA0_EN_DRVD(0xf),
157 SUN6I_TCON0_LVDS_ANA0_EN_DRVD(val));
159 regmap_update_bits(tcon->regs, SUN4I_TCON0_LVDS_IF_REG,
160 SUN4I_TCON0_LVDS_IF_EN, 0);
164 void sun4i_tcon_set_status(struct sun4i_tcon *tcon,
165 const struct drm_encoder *encoder,
168 bool is_lvds = false;
171 switch (encoder->encoder_type) {
172 case DRM_MODE_ENCODER_LVDS:
175 case DRM_MODE_ENCODER_DSI:
176 case DRM_MODE_ENCODER_NONE:
179 case DRM_MODE_ENCODER_TMDS:
180 case DRM_MODE_ENCODER_TVDAC:
184 DRM_DEBUG_DRIVER("Unknown encoder type, doing nothing...\n");
188 if (is_lvds && !enabled)
189 sun4i_tcon_lvds_set_status(tcon, encoder, false);
191 regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
192 SUN4I_TCON_GCTL_TCON_ENABLE,
193 enabled ? SUN4I_TCON_GCTL_TCON_ENABLE : 0);
195 if (is_lvds && enabled)
196 sun4i_tcon_lvds_set_status(tcon, encoder, true);
198 sun4i_tcon_channel_set_status(tcon, channel, enabled);
201 void sun4i_tcon_enable_vblank(struct sun4i_tcon *tcon, bool enable)
205 DRM_DEBUG_DRIVER("%sabling VBLANK interrupt\n", enable ? "En" : "Dis");
207 mask = SUN4I_TCON_GINT0_VBLANK_ENABLE(0) |
208 SUN4I_TCON_GINT0_VBLANK_ENABLE(1) |
209 SUN4I_TCON_GINT0_TCON0_TRI_FINISH_ENABLE;
214 regmap_update_bits(tcon->regs, SUN4I_TCON_GINT0_REG, mask, val);
216 EXPORT_SYMBOL(sun4i_tcon_enable_vblank);
219 * This function is a helper for TCON output muxing. The TCON output
220 * muxing control register in earlier SoCs (without the TCON TOP block)
221 * are located in TCON0. This helper returns a pointer to TCON0's
222 * sun4i_tcon structure, or NULL if not found.
224 static struct sun4i_tcon *sun4i_get_tcon0(struct drm_device *drm)
226 struct sun4i_drv *drv = drm->dev_private;
227 struct sun4i_tcon *tcon;
229 list_for_each_entry(tcon, &drv->tcon_list, list)
234 "TCON0 not found, display output muxing may not work\n");
239 void sun4i_tcon_set_mux(struct sun4i_tcon *tcon, int channel,
240 const struct drm_encoder *encoder)
244 if (tcon->quirks->set_mux)
245 ret = tcon->quirks->set_mux(tcon, encoder);
247 DRM_DEBUG_DRIVER("Muxing encoder %s to CRTC %s: %d\n",
248 encoder->name, encoder->crtc->name, ret);
251 static int sun4i_tcon_get_clk_delay(const struct drm_display_mode *mode,
254 int delay = mode->vtotal - mode->vdisplay;
256 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
262 delay = min(delay, 30);
264 DRM_DEBUG_DRIVER("TCON %d clock delay %u\n", channel, delay);
269 static void sun4i_tcon0_mode_set_common(struct sun4i_tcon *tcon,
270 const struct drm_display_mode *mode)
272 /* Configure the dot clock */
273 clk_set_rate(tcon->dclk, mode->crtc_clock * 1000);
275 /* Set the resolution */
276 regmap_write(tcon->regs, SUN4I_TCON0_BASIC0_REG,
277 SUN4I_TCON0_BASIC0_X(mode->crtc_hdisplay) |
278 SUN4I_TCON0_BASIC0_Y(mode->crtc_vdisplay));
281 static void sun4i_tcon0_mode_set_dithering(struct sun4i_tcon *tcon,
282 const struct drm_connector *connector)
287 /* XXX Would this ever happen? */
292 * FIXME: Undocumented bits
294 * The whole dithering process and these parameters are not
295 * explained in the vendor documents or BSP kernel code.
297 regmap_write(tcon->regs, SUN4I_TCON0_FRM_SEED_PR_REG, 0x11111111);
298 regmap_write(tcon->regs, SUN4I_TCON0_FRM_SEED_PG_REG, 0x11111111);
299 regmap_write(tcon->regs, SUN4I_TCON0_FRM_SEED_PB_REG, 0x11111111);
300 regmap_write(tcon->regs, SUN4I_TCON0_FRM_SEED_LR_REG, 0x11111111);
301 regmap_write(tcon->regs, SUN4I_TCON0_FRM_SEED_LG_REG, 0x11111111);
302 regmap_write(tcon->regs, SUN4I_TCON0_FRM_SEED_LB_REG, 0x11111111);
303 regmap_write(tcon->regs, SUN4I_TCON0_FRM_TBL0_REG, 0x01010000);
304 regmap_write(tcon->regs, SUN4I_TCON0_FRM_TBL1_REG, 0x15151111);
305 regmap_write(tcon->regs, SUN4I_TCON0_FRM_TBL2_REG, 0x57575555);
306 regmap_write(tcon->regs, SUN4I_TCON0_FRM_TBL3_REG, 0x7f7f7777);
308 /* Do dithering if panel only supports 6 bits per color */
309 if (connector->display_info.bpc == 6)
310 val |= SUN4I_TCON0_FRM_CTL_EN;
312 if (connector->display_info.num_bus_formats == 1)
313 bus_format = connector->display_info.bus_formats[0];
315 /* Check the connection format */
316 switch (bus_format) {
317 case MEDIA_BUS_FMT_RGB565_1X16:
318 /* R and B components are only 5 bits deep */
319 val |= SUN4I_TCON0_FRM_CTL_MODE_R;
320 val |= SUN4I_TCON0_FRM_CTL_MODE_B;
321 case MEDIA_BUS_FMT_RGB666_1X18:
322 case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG:
323 /* Fall through: enable dithering */
324 val |= SUN4I_TCON0_FRM_CTL_EN;
328 /* Write dithering settings */
329 regmap_write(tcon->regs, SUN4I_TCON_FRM_CTL_REG, val);
332 static void sun4i_tcon0_mode_set_cpu(struct sun4i_tcon *tcon,
333 const struct drm_encoder *encoder,
334 const struct drm_display_mode *mode)
336 /* TODO support normal CPU interface modes */
337 struct sun6i_dsi *dsi = encoder_to_sun6i_dsi(encoder);
338 struct mipi_dsi_device *device = dsi->device;
339 u8 bpp = mipi_dsi_pixel_format_to_bpp(device->format);
340 u8 lanes = device->lanes;
341 u32 block_space, start_delay;
344 tcon->dclk_min_div = 4;
345 tcon->dclk_max_div = 127;
347 sun4i_tcon0_mode_set_common(tcon, mode);
349 /* Set dithering if needed */
350 sun4i_tcon0_mode_set_dithering(tcon, sun4i_tcon_get_connector(encoder));
352 regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,
353 SUN4I_TCON0_CTL_IF_MASK,
354 SUN4I_TCON0_CTL_IF_8080);
356 regmap_write(tcon->regs, SUN4I_TCON_ECC_FIFO_REG,
357 SUN4I_TCON_ECC_FIFO_EN);
359 regmap_write(tcon->regs, SUN4I_TCON0_CPU_IF_REG,
360 SUN4I_TCON0_CPU_IF_MODE_DSI |
361 SUN4I_TCON0_CPU_IF_TRI_FIFO_FLUSH |
362 SUN4I_TCON0_CPU_IF_TRI_FIFO_EN |
363 SUN4I_TCON0_CPU_IF_TRI_EN);
366 * This looks suspicious, but it works...
368 * The datasheet says that this should be set higher than 20 *
369 * pixel cycle, but it's not clear what a pixel cycle is.
371 regmap_read(tcon->regs, SUN4I_TCON0_DCLK_REG, &tcon_div);
372 tcon_div &= GENMASK(6, 0);
373 block_space = mode->htotal * bpp / (tcon_div * lanes);
374 block_space -= mode->hdisplay + 40;
376 regmap_write(tcon->regs, SUN4I_TCON0_CPU_TRI0_REG,
377 SUN4I_TCON0_CPU_TRI0_BLOCK_SPACE(block_space) |
378 SUN4I_TCON0_CPU_TRI0_BLOCK_SIZE(mode->hdisplay));
380 regmap_write(tcon->regs, SUN4I_TCON0_CPU_TRI1_REG,
381 SUN4I_TCON0_CPU_TRI1_BLOCK_NUM(mode->vdisplay));
383 start_delay = (mode->crtc_vtotal - mode->crtc_vdisplay - 10 - 1);
384 start_delay = start_delay * mode->crtc_htotal * 149;
385 start_delay = start_delay / (mode->crtc_clock / 1000) / 8;
386 regmap_write(tcon->regs, SUN4I_TCON0_CPU_TRI2_REG,
387 SUN4I_TCON0_CPU_TRI2_TRANS_START_SET(10) |
388 SUN4I_TCON0_CPU_TRI2_START_DELAY(start_delay));
391 * The Allwinner BSP has a comment that the period should be
392 * the display clock * 15, but uses an hardcoded 3000...
394 regmap_write(tcon->regs, SUN4I_TCON_SAFE_PERIOD_REG,
395 SUN4I_TCON_SAFE_PERIOD_NUM(3000) |
396 SUN4I_TCON_SAFE_PERIOD_MODE(3));
398 /* Enable the output on the pins */
399 regmap_write(tcon->regs, SUN4I_TCON0_IO_TRI_REG,
403 static void sun4i_tcon0_mode_set_lvds(struct sun4i_tcon *tcon,
404 const struct drm_encoder *encoder,
405 const struct drm_display_mode *mode)
411 WARN_ON(!tcon->quirks->has_channel_0);
413 tcon->dclk_min_div = 7;
414 tcon->dclk_max_div = 7;
415 sun4i_tcon0_mode_set_common(tcon, mode);
417 /* Set dithering if needed */
418 sun4i_tcon0_mode_set_dithering(tcon, sun4i_tcon_get_connector(encoder));
420 /* Adjust clock delay */
421 clk_delay = sun4i_tcon_get_clk_delay(mode, 0);
422 regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,
423 SUN4I_TCON0_CTL_CLK_DELAY_MASK,
424 SUN4I_TCON0_CTL_CLK_DELAY(clk_delay));
427 * This is called a backporch in the register documentation,
428 * but it really is the back porch + hsync
430 bp = mode->crtc_htotal - mode->crtc_hsync_start;
431 DRM_DEBUG_DRIVER("Setting horizontal total %d, backporch %d\n",
432 mode->crtc_htotal, bp);
434 /* Set horizontal display timings */
435 regmap_write(tcon->regs, SUN4I_TCON0_BASIC1_REG,
436 SUN4I_TCON0_BASIC1_H_TOTAL(mode->htotal) |
437 SUN4I_TCON0_BASIC1_H_BACKPORCH(bp));
440 * This is called a backporch in the register documentation,
441 * but it really is the back porch + hsync
443 bp = mode->crtc_vtotal - mode->crtc_vsync_start;
444 DRM_DEBUG_DRIVER("Setting vertical total %d, backporch %d\n",
445 mode->crtc_vtotal, bp);
447 /* Set vertical display timings */
448 regmap_write(tcon->regs, SUN4I_TCON0_BASIC2_REG,
449 SUN4I_TCON0_BASIC2_V_TOTAL(mode->crtc_vtotal * 2) |
450 SUN4I_TCON0_BASIC2_V_BACKPORCH(bp));
452 reg = SUN4I_TCON0_LVDS_IF_CLK_SEL_TCON0 |
453 SUN4I_TCON0_LVDS_IF_DATA_POL_NORMAL |
454 SUN4I_TCON0_LVDS_IF_CLK_POL_NORMAL;
455 if (sun4i_tcon_get_pixel_depth(encoder) == 24)
456 reg |= SUN4I_TCON0_LVDS_IF_BITWIDTH_24BITS;
458 reg |= SUN4I_TCON0_LVDS_IF_BITWIDTH_18BITS;
460 regmap_write(tcon->regs, SUN4I_TCON0_LVDS_IF_REG, reg);
462 /* Setup the polarity of the various signals */
463 if (!(mode->flags & DRM_MODE_FLAG_PHSYNC))
464 val |= SUN4I_TCON0_IO_POL_HSYNC_POSITIVE;
466 if (!(mode->flags & DRM_MODE_FLAG_PVSYNC))
467 val |= SUN4I_TCON0_IO_POL_VSYNC_POSITIVE;
469 regmap_write(tcon->regs, SUN4I_TCON0_IO_POL_REG, val);
471 /* Map output pins to channel 0 */
472 regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
473 SUN4I_TCON_GCTL_IOMAP_MASK,
474 SUN4I_TCON_GCTL_IOMAP_TCON0);
476 /* Enable the output on the pins */
477 regmap_write(tcon->regs, SUN4I_TCON0_IO_TRI_REG, 0xe0000000);
480 static void sun4i_tcon0_mode_set_rgb(struct sun4i_tcon *tcon,
481 const struct drm_display_mode *mode)
483 unsigned int bp, hsync, vsync;
487 WARN_ON(!tcon->quirks->has_channel_0);
489 tcon->dclk_min_div = 6;
490 tcon->dclk_max_div = 127;
491 sun4i_tcon0_mode_set_common(tcon, mode);
493 /* Set dithering if needed */
495 sun4i_tcon0_mode_set_dithering(tcon, tcon->panel->connector);
497 /* Adjust clock delay */
498 clk_delay = sun4i_tcon_get_clk_delay(mode, 0);
499 regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,
500 SUN4I_TCON0_CTL_CLK_DELAY_MASK,
501 SUN4I_TCON0_CTL_CLK_DELAY(clk_delay));
504 * This is called a backporch in the register documentation,
505 * but it really is the back porch + hsync
507 bp = mode->crtc_htotal - mode->crtc_hsync_start;
508 DRM_DEBUG_DRIVER("Setting horizontal total %d, backporch %d\n",
509 mode->crtc_htotal, bp);
511 /* Set horizontal display timings */
512 regmap_write(tcon->regs, SUN4I_TCON0_BASIC1_REG,
513 SUN4I_TCON0_BASIC1_H_TOTAL(mode->crtc_htotal) |
514 SUN4I_TCON0_BASIC1_H_BACKPORCH(bp));
517 * This is called a backporch in the register documentation,
518 * but it really is the back porch + hsync
520 bp = mode->crtc_vtotal - mode->crtc_vsync_start;
521 DRM_DEBUG_DRIVER("Setting vertical total %d, backporch %d\n",
522 mode->crtc_vtotal, bp);
524 /* Set vertical display timings */
525 regmap_write(tcon->regs, SUN4I_TCON0_BASIC2_REG,
526 SUN4I_TCON0_BASIC2_V_TOTAL(mode->crtc_vtotal * 2) |
527 SUN4I_TCON0_BASIC2_V_BACKPORCH(bp));
529 /* Set Hsync and Vsync length */
530 hsync = mode->crtc_hsync_end - mode->crtc_hsync_start;
531 vsync = mode->crtc_vsync_end - mode->crtc_vsync_start;
532 DRM_DEBUG_DRIVER("Setting HSYNC %d, VSYNC %d\n", hsync, vsync);
533 regmap_write(tcon->regs, SUN4I_TCON0_BASIC3_REG,
534 SUN4I_TCON0_BASIC3_V_SYNC(vsync) |
535 SUN4I_TCON0_BASIC3_H_SYNC(hsync));
537 /* Setup the polarity of the various signals */
538 if (mode->flags & DRM_MODE_FLAG_PHSYNC)
539 val |= SUN4I_TCON0_IO_POL_HSYNC_POSITIVE;
541 if (mode->flags & DRM_MODE_FLAG_PVSYNC)
542 val |= SUN4I_TCON0_IO_POL_VSYNC_POSITIVE;
545 * On A20 and similar SoCs, the only way to achieve Positive Edge
546 * (Rising Edge), is setting dclk clock phase to 2/3(240°).
547 * By default TCON works in Negative Edge(Falling Edge),
548 * this is why phase is set to 0 in that case.
549 * Unfortunately there's no way to logically invert dclk through
551 * The only acceptable way to work, triple checked with scope,
552 * is using clock phase set to 0° for Negative Edge and set to 240°
554 * On A33 and similar SoCs there would be a 90° phase option,
555 * but it divides also dclk by 2.
556 * Following code is a way to avoid quirks all around TCON
557 * and DOTCLOCK drivers.
560 struct drm_panel *panel = tcon->panel;
561 struct drm_connector *connector = panel->connector;
562 struct drm_display_info display_info = connector->display_info;
564 if (display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_POSEDGE)
565 clk_set_phase(tcon->dclk, 240);
567 if (display_info.bus_flags & DRM_BUS_FLAG_PIXDATA_NEGEDGE)
568 clk_set_phase(tcon->dclk, 0);
571 regmap_update_bits(tcon->regs, SUN4I_TCON0_IO_POL_REG,
572 SUN4I_TCON0_IO_POL_HSYNC_POSITIVE | SUN4I_TCON0_IO_POL_VSYNC_POSITIVE,
575 /* Map output pins to channel 0 */
576 regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
577 SUN4I_TCON_GCTL_IOMAP_MASK,
578 SUN4I_TCON_GCTL_IOMAP_TCON0);
580 /* Enable the output on the pins */
581 regmap_write(tcon->regs, SUN4I_TCON0_IO_TRI_REG, 0);
584 static void sun4i_tcon1_mode_set(struct sun4i_tcon *tcon,
585 const struct drm_display_mode *mode)
587 unsigned int bp, hsync, vsync, vtotal;
591 WARN_ON(!tcon->quirks->has_channel_1);
593 /* Configure the dot clock */
594 clk_set_rate(tcon->sclk1, mode->crtc_clock * 1000);
596 /* Adjust clock delay */
597 clk_delay = sun4i_tcon_get_clk_delay(mode, 1);
598 regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
599 SUN4I_TCON1_CTL_CLK_DELAY_MASK,
600 SUN4I_TCON1_CTL_CLK_DELAY(clk_delay));
602 /* Set interlaced mode */
603 if (mode->flags & DRM_MODE_FLAG_INTERLACE)
604 val = SUN4I_TCON1_CTL_INTERLACE_ENABLE;
607 regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
608 SUN4I_TCON1_CTL_INTERLACE_ENABLE,
611 /* Set the input resolution */
612 regmap_write(tcon->regs, SUN4I_TCON1_BASIC0_REG,
613 SUN4I_TCON1_BASIC0_X(mode->crtc_hdisplay) |
614 SUN4I_TCON1_BASIC0_Y(mode->crtc_vdisplay));
616 /* Set the upscaling resolution */
617 regmap_write(tcon->regs, SUN4I_TCON1_BASIC1_REG,
618 SUN4I_TCON1_BASIC1_X(mode->crtc_hdisplay) |
619 SUN4I_TCON1_BASIC1_Y(mode->crtc_vdisplay));
621 /* Set the output resolution */
622 regmap_write(tcon->regs, SUN4I_TCON1_BASIC2_REG,
623 SUN4I_TCON1_BASIC2_X(mode->crtc_hdisplay) |
624 SUN4I_TCON1_BASIC2_Y(mode->crtc_vdisplay));
626 /* Set horizontal display timings */
627 bp = mode->crtc_htotal - mode->crtc_hsync_start;
628 DRM_DEBUG_DRIVER("Setting horizontal total %d, backporch %d\n",
630 regmap_write(tcon->regs, SUN4I_TCON1_BASIC3_REG,
631 SUN4I_TCON1_BASIC3_H_TOTAL(mode->crtc_htotal) |
632 SUN4I_TCON1_BASIC3_H_BACKPORCH(bp));
634 bp = mode->crtc_vtotal - mode->crtc_vsync_start;
635 DRM_DEBUG_DRIVER("Setting vertical total %d, backporch %d\n",
636 mode->crtc_vtotal, bp);
639 * The vertical resolution needs to be doubled in all
640 * cases. We could use crtc_vtotal and always multiply by two,
641 * but that leads to a rounding error in interlace when vtotal
644 * This happens with TV's PAL for example, where vtotal will
645 * be 625, crtc_vtotal 312, and thus crtc_vtotal * 2 will be
646 * 624, which apparently confuses the hardware.
648 * To work around this, we will always use vtotal, and
649 * multiply by two only if we're not in interlace.
651 vtotal = mode->vtotal;
652 if (!(mode->flags & DRM_MODE_FLAG_INTERLACE))
655 /* Set vertical display timings */
656 regmap_write(tcon->regs, SUN4I_TCON1_BASIC4_REG,
657 SUN4I_TCON1_BASIC4_V_TOTAL(vtotal) |
658 SUN4I_TCON1_BASIC4_V_BACKPORCH(bp));
660 /* Set Hsync and Vsync length */
661 hsync = mode->crtc_hsync_end - mode->crtc_hsync_start;
662 vsync = mode->crtc_vsync_end - mode->crtc_vsync_start;
663 DRM_DEBUG_DRIVER("Setting HSYNC %d, VSYNC %d\n", hsync, vsync);
664 regmap_write(tcon->regs, SUN4I_TCON1_BASIC5_REG,
665 SUN4I_TCON1_BASIC5_V_SYNC(vsync) |
666 SUN4I_TCON1_BASIC5_H_SYNC(hsync));
668 /* Map output pins to channel 1 */
669 regmap_update_bits(tcon->regs, SUN4I_TCON_GCTL_REG,
670 SUN4I_TCON_GCTL_IOMAP_MASK,
671 SUN4I_TCON_GCTL_IOMAP_TCON1);
674 void sun4i_tcon_mode_set(struct sun4i_tcon *tcon,
675 const struct drm_encoder *encoder,
676 const struct drm_display_mode *mode)
678 switch (encoder->encoder_type) {
679 case DRM_MODE_ENCODER_DSI:
680 /* DSI is tied to special case of CPU interface */
681 sun4i_tcon0_mode_set_cpu(tcon, encoder, mode);
683 case DRM_MODE_ENCODER_LVDS:
684 sun4i_tcon0_mode_set_lvds(tcon, encoder, mode);
686 case DRM_MODE_ENCODER_NONE:
687 sun4i_tcon0_mode_set_rgb(tcon, mode);
688 sun4i_tcon_set_mux(tcon, 0, encoder);
690 case DRM_MODE_ENCODER_TVDAC:
691 case DRM_MODE_ENCODER_TMDS:
692 sun4i_tcon1_mode_set(tcon, mode);
693 sun4i_tcon_set_mux(tcon, 1, encoder);
696 DRM_DEBUG_DRIVER("Unknown encoder type, doing nothing...\n");
699 EXPORT_SYMBOL(sun4i_tcon_mode_set);
701 static void sun4i_tcon_finish_page_flip(struct drm_device *dev,
702 struct sun4i_crtc *scrtc)
706 spin_lock_irqsave(&dev->event_lock, flags);
708 drm_crtc_send_vblank_event(&scrtc->crtc, scrtc->event);
709 drm_crtc_vblank_put(&scrtc->crtc);
712 spin_unlock_irqrestore(&dev->event_lock, flags);
715 static irqreturn_t sun4i_tcon_handler(int irq, void *private)
717 struct sun4i_tcon *tcon = private;
718 struct drm_device *drm = tcon->drm;
719 struct sun4i_crtc *scrtc = tcon->crtc;
720 struct sunxi_engine *engine = scrtc->engine;
723 regmap_read(tcon->regs, SUN4I_TCON_GINT0_REG, &status);
725 if (!(status & (SUN4I_TCON_GINT0_VBLANK_INT(0) |
726 SUN4I_TCON_GINT0_VBLANK_INT(1) |
727 SUN4I_TCON_GINT0_TCON0_TRI_FINISH_INT)))
730 drm_crtc_handle_vblank(&scrtc->crtc);
731 sun4i_tcon_finish_page_flip(drm, scrtc);
733 /* Acknowledge the interrupt */
734 regmap_update_bits(tcon->regs, SUN4I_TCON_GINT0_REG,
735 SUN4I_TCON_GINT0_VBLANK_INT(0) |
736 SUN4I_TCON_GINT0_VBLANK_INT(1) |
737 SUN4I_TCON_GINT0_TCON0_TRI_FINISH_INT,
740 if (engine->ops->vblank_quirk)
741 engine->ops->vblank_quirk(engine);
746 static int sun4i_tcon_init_clocks(struct device *dev,
747 struct sun4i_tcon *tcon)
749 tcon->clk = devm_clk_get(dev, "ahb");
750 if (IS_ERR(tcon->clk)) {
751 dev_err(dev, "Couldn't get the TCON bus clock\n");
752 return PTR_ERR(tcon->clk);
754 clk_prepare_enable(tcon->clk);
756 if (tcon->quirks->has_channel_0) {
757 tcon->sclk0 = devm_clk_get(dev, "tcon-ch0");
758 if (IS_ERR(tcon->sclk0)) {
759 dev_err(dev, "Couldn't get the TCON channel 0 clock\n");
760 return PTR_ERR(tcon->sclk0);
764 if (tcon->quirks->has_channel_1) {
765 tcon->sclk1 = devm_clk_get(dev, "tcon-ch1");
766 if (IS_ERR(tcon->sclk1)) {
767 dev_err(dev, "Couldn't get the TCON channel 1 clock\n");
768 return PTR_ERR(tcon->sclk1);
775 static void sun4i_tcon_free_clocks(struct sun4i_tcon *tcon)
777 clk_disable_unprepare(tcon->clk);
780 static int sun4i_tcon_init_irq(struct device *dev,
781 struct sun4i_tcon *tcon)
783 struct platform_device *pdev = to_platform_device(dev);
786 irq = platform_get_irq(pdev, 0);
788 dev_err(dev, "Couldn't retrieve the TCON interrupt\n");
792 ret = devm_request_irq(dev, irq, sun4i_tcon_handler, 0,
793 dev_name(dev), tcon);
795 dev_err(dev, "Couldn't request the IRQ\n");
802 static struct regmap_config sun4i_tcon_regmap_config = {
806 .max_register = 0x800,
809 static int sun4i_tcon_init_regmap(struct device *dev,
810 struct sun4i_tcon *tcon)
812 struct platform_device *pdev = to_platform_device(dev);
813 struct resource *res;
816 res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
817 regs = devm_ioremap_resource(dev, res);
819 return PTR_ERR(regs);
821 tcon->regs = devm_regmap_init_mmio(dev, regs,
822 &sun4i_tcon_regmap_config);
823 if (IS_ERR(tcon->regs)) {
824 dev_err(dev, "Couldn't create the TCON regmap\n");
825 return PTR_ERR(tcon->regs);
828 /* Make sure the TCON is disabled and all IRQs are off */
829 regmap_write(tcon->regs, SUN4I_TCON_GCTL_REG, 0);
830 regmap_write(tcon->regs, SUN4I_TCON_GINT0_REG, 0);
831 regmap_write(tcon->regs, SUN4I_TCON_GINT1_REG, 0);
833 /* Disable IO lines and set them to tristate */
834 regmap_write(tcon->regs, SUN4I_TCON0_IO_TRI_REG, ~0);
835 regmap_write(tcon->regs, SUN4I_TCON1_IO_TRI_REG, ~0);
841 * On SoCs with the old display pipeline design (Display Engine 1.0),
842 * the TCON is always tied to just one backend. Hence we can traverse
843 * the of_graph upwards to find the backend our tcon is connected to,
844 * and take its ID as our own.
846 * We can either identify backends from their compatible strings, which
847 * means maintaining a large list of them. Or, since the backend is
848 * registered and binded before the TCON, we can just go through the
849 * list of registered backends and compare the device node.
851 * As the structures now store engines instead of backends, here this
852 * function in fact searches the corresponding engine, and the ID is
853 * requested via the get_id function of the engine.
855 static struct sunxi_engine *
856 sun4i_tcon_find_engine_traverse(struct sun4i_drv *drv,
857 struct device_node *node,
860 struct device_node *port, *ep, *remote;
861 struct sunxi_engine *engine = ERR_PTR(-EINVAL);
864 port = of_graph_get_port_by_id(node, port_id);
866 return ERR_PTR(-EINVAL);
869 * This only works if there is only one path from the TCON
870 * to any display engine. Otherwise the probe order of the
871 * TCONs and display engines is not guaranteed. They may
872 * either bind to the wrong one, or worse, bind to the same
873 * one if additional checks are not done.
875 * Bail out if there are multiple input connections.
877 if (of_get_available_child_count(port) != 1)
880 /* Get the first connection without specifying an ID */
881 ep = of_get_next_available_child(port, NULL);
885 remote = of_graph_get_remote_port_parent(ep);
889 /* does this node match any registered engines? */
890 list_for_each_entry(engine, &drv->engine_list, list)
891 if (remote == engine->node)
895 * According to device tree binding input ports have even id
896 * number and output ports have odd id. Since component with
897 * more than one input and one output (TCON TOP) exits, correct
898 * remote input id has to be calculated by subtracting 1 from
899 * remote output id. If this for some reason can't be done, 0
900 * is used as input port id.
903 port = of_graph_get_remote_port(ep);
904 if (!of_property_read_u32(port, "reg", ®) && reg > 0)
907 /* keep looking through upstream ports */
908 engine = sun4i_tcon_find_engine_traverse(drv, remote, reg);
921 * The device tree binding says that the remote endpoint ID of any
922 * connection between components, up to and including the TCON, of
923 * the display pipeline should be equal to the actual ID of the local
924 * component. Thus we can look at any one of the input connections of
925 * the TCONs, and use that connection's remote endpoint ID as our own.
927 * Since the user of this function already finds the input port,
928 * the port is passed in directly without further checks.
930 static int sun4i_tcon_of_get_id_from_port(struct device_node *port)
932 struct device_node *ep;
935 /* try finding an upstream endpoint */
936 for_each_available_child_of_node(port, ep) {
937 struct device_node *remote;
940 remote = of_graph_get_remote_endpoint(ep);
944 ret = of_property_read_u32(remote, "reg", ®);
955 * Once we know the TCON's id, we can look through the list of
956 * engines to find a matching one. We assume all engines have
957 * been probed and added to the list.
959 static struct sunxi_engine *sun4i_tcon_get_engine_by_id(struct sun4i_drv *drv,
962 struct sunxi_engine *engine;
964 list_for_each_entry(engine, &drv->engine_list, list)
965 if (engine->id == id)
968 return ERR_PTR(-EINVAL);
971 static bool sun4i_tcon_connected_to_tcon_top(struct device_node *node)
973 struct device_node *remote;
976 remote = of_graph_get_remote_node(node, 0, -1);
978 ret = !!(IS_ENABLED(CONFIG_DRM_SUN8I_TCON_TOP) &&
979 of_match_node(sun8i_tcon_top_of_table, remote));
986 static int sun4i_tcon_get_index(struct sun4i_drv *drv)
988 struct list_head *pos;
992 * Because TCON is added to the list at the end of the probe
993 * (after this function is called), index of the current TCON
994 * will be same as current TCON list size.
996 list_for_each(pos, &drv->tcon_list)
1003 * On SoCs with the old display pipeline design (Display Engine 1.0),
1004 * we assumed the TCON was always tied to just one backend. However
1005 * this proved not to be the case. On the A31, the TCON can select
1006 * either backend as its source. On the A20 (and likely on the A10),
1007 * the backend can choose which TCON to output to.
1009 * The device tree binding says that the remote endpoint ID of any
1010 * connection between components, up to and including the TCON, of
1011 * the display pipeline should be equal to the actual ID of the local
1012 * component. Thus we should be able to look at any one of the input
1013 * connections of the TCONs, and use that connection's remote endpoint
1016 * However the connections between the backend and TCON were assumed
1017 * to be always singular, and their endpoit IDs were all incorrectly
1018 * set to 0. This means for these old device trees, we cannot just look
1019 * up the remote endpoint ID of a TCON input endpoint. TCON1 would be
1020 * incorrectly identified as TCON0.
1022 * This function first checks if the TCON node has 2 input endpoints.
1023 * If so, then the device tree is a corrected version, and it will use
1024 * sun4i_tcon_of_get_id() and sun4i_tcon_get_engine_by_id() from above
1025 * to fetch the ID and engine directly. If not, then it is likely an
1026 * old device trees, where the endpoint IDs were incorrect, but did not
1027 * have endpoint connections between the backend and TCON across
1028 * different display pipelines. It will fall back to the old method of
1029 * traversing the of_graph to try and find a matching engine by device
1032 * In the case of single display pipeline device trees, either method
1035 static struct sunxi_engine *sun4i_tcon_find_engine(struct sun4i_drv *drv,
1036 struct device_node *node)
1038 struct device_node *port;
1039 struct sunxi_engine *engine;
1041 port = of_graph_get_port_by_id(node, 0);
1043 return ERR_PTR(-EINVAL);
1046 * Is this a corrected device tree with cross pipeline
1047 * connections between the backend and TCON?
1049 if (of_get_child_count(port) > 1) {
1053 * When pipeline has the same number of TCONs and engines which
1054 * are represented by frontends/backends (DE1) or mixers (DE2),
1055 * we match them by their respective IDs. However, if pipeline
1056 * contains TCON TOP, chances are that there are either more
1057 * TCONs than engines (R40) or TCONs with non-consecutive ids.
1058 * (H6). In that case it's easier just use TCON index in list
1059 * as an id. That means that on R40, any 2 TCONs can be enabled
1060 * in DT out of 4 (there are 2 mixers). Due to the design of
1061 * TCON TOP, remaining 2 TCONs can't be connected to anything
1064 if (sun4i_tcon_connected_to_tcon_top(node))
1065 id = sun4i_tcon_get_index(drv);
1067 id = sun4i_tcon_of_get_id_from_port(port);
1069 /* Get our engine by matching our ID */
1070 engine = sun4i_tcon_get_engine_by_id(drv, id);
1076 /* Fallback to old method by traversing input endpoints */
1078 return sun4i_tcon_find_engine_traverse(drv, node, 0);
1081 static int sun4i_tcon_bind(struct device *dev, struct device *master,
1084 struct drm_device *drm = data;
1085 struct sun4i_drv *drv = drm->dev_private;
1086 struct sunxi_engine *engine;
1087 struct device_node *remote;
1088 struct sun4i_tcon *tcon;
1089 struct reset_control *edp_rstc;
1090 bool has_lvds_rst, has_lvds_alt, can_lvds;
1093 engine = sun4i_tcon_find_engine(drv, dev->of_node);
1094 if (IS_ERR(engine)) {
1095 dev_err(dev, "Couldn't find matching engine\n");
1096 return -EPROBE_DEFER;
1099 tcon = devm_kzalloc(dev, sizeof(*tcon), GFP_KERNEL);
1102 dev_set_drvdata(dev, tcon);
1105 tcon->id = engine->id;
1106 tcon->quirks = of_device_get_match_data(dev);
1108 tcon->lcd_rst = devm_reset_control_get(dev, "lcd");
1109 if (IS_ERR(tcon->lcd_rst)) {
1110 dev_err(dev, "Couldn't get our reset line\n");
1111 return PTR_ERR(tcon->lcd_rst);
1114 if (tcon->quirks->needs_edp_reset) {
1115 edp_rstc = devm_reset_control_get_shared(dev, "edp");
1116 if (IS_ERR(edp_rstc)) {
1117 dev_err(dev, "Couldn't get edp reset line\n");
1118 return PTR_ERR(edp_rstc);
1121 ret = reset_control_deassert(edp_rstc);
1123 dev_err(dev, "Couldn't deassert edp reset line\n");
1128 /* Make sure our TCON is reset */
1129 ret = reset_control_reset(tcon->lcd_rst);
1131 dev_err(dev, "Couldn't deassert our reset line\n");
1135 if (tcon->quirks->supports_lvds) {
1137 * This can only be made optional since we've had DT
1138 * nodes without the LVDS reset properties.
1140 * If the property is missing, just disable LVDS, and
1143 tcon->lvds_rst = devm_reset_control_get_optional(dev, "lvds");
1144 if (IS_ERR(tcon->lvds_rst)) {
1145 dev_err(dev, "Couldn't get our reset line\n");
1146 return PTR_ERR(tcon->lvds_rst);
1147 } else if (tcon->lvds_rst) {
1148 has_lvds_rst = true;
1149 reset_control_reset(tcon->lvds_rst);
1151 has_lvds_rst = false;
1155 * This can only be made optional since we've had DT
1156 * nodes without the LVDS reset properties.
1158 * If the property is missing, just disable LVDS, and
1161 if (tcon->quirks->has_lvds_alt) {
1162 tcon->lvds_pll = devm_clk_get(dev, "lvds-alt");
1163 if (IS_ERR(tcon->lvds_pll)) {
1164 if (PTR_ERR(tcon->lvds_pll) == -ENOENT) {
1165 has_lvds_alt = false;
1167 dev_err(dev, "Couldn't get the LVDS PLL\n");
1168 return PTR_ERR(tcon->lvds_pll);
1171 has_lvds_alt = true;
1175 if (!has_lvds_rst ||
1176 (tcon->quirks->has_lvds_alt && !has_lvds_alt)) {
1177 dev_warn(dev, "Missing LVDS properties, Please upgrade your DT\n");
1178 dev_warn(dev, "LVDS output disabled\n");
1187 ret = sun4i_tcon_init_clocks(dev, tcon);
1189 dev_err(dev, "Couldn't init our TCON clocks\n");
1190 goto err_assert_reset;
1193 ret = sun4i_tcon_init_regmap(dev, tcon);
1195 dev_err(dev, "Couldn't init our TCON regmap\n");
1196 goto err_free_clocks;
1199 if (tcon->quirks->has_channel_0) {
1200 ret = sun4i_dclk_create(dev, tcon);
1202 dev_err(dev, "Couldn't create our TCON dot clock\n");
1203 goto err_free_clocks;
1207 ret = sun4i_tcon_init_irq(dev, tcon);
1209 dev_err(dev, "Couldn't init our TCON interrupts\n");
1210 goto err_free_dotclock;
1213 tcon->crtc = sun4i_crtc_init(drm, engine, tcon);
1214 if (IS_ERR(tcon->crtc)) {
1215 dev_err(dev, "Couldn't create our CRTC\n");
1216 ret = PTR_ERR(tcon->crtc);
1217 goto err_free_dotclock;
1220 if (tcon->quirks->has_channel_0) {
1222 * If we have an LVDS panel connected to the TCON, we should
1223 * just probe the LVDS connector. Otherwise, just probe RGB as
1226 remote = of_graph_get_remote_node(dev->of_node, 1, 0);
1227 if (of_device_is_compatible(remote, "panel-lvds"))
1229 ret = sun4i_lvds_init(drm, tcon);
1233 ret = sun4i_rgb_init(drm, tcon);
1234 of_node_put(remote);
1237 goto err_free_dotclock;
1240 if (tcon->quirks->needs_de_be_mux) {
1242 * We assume there is no dynamic muxing of backends
1243 * and TCONs, so we select the backend with same ID.
1245 * While dynamic selection might be interesting, since
1246 * the CRTC is tied to the TCON, while the layers are
1247 * tied to the backends, this means, we will need to
1248 * switch between groups of layers. There might not be
1249 * a way to represent this constraint in DRM.
1251 regmap_update_bits(tcon->regs, SUN4I_TCON0_CTL_REG,
1252 SUN4I_TCON0_CTL_SRC_SEL_MASK,
1254 regmap_update_bits(tcon->regs, SUN4I_TCON1_CTL_REG,
1255 SUN4I_TCON1_CTL_SRC_SEL_MASK,
1259 list_add_tail(&tcon->list, &drv->tcon_list);
1264 if (tcon->quirks->has_channel_0)
1265 sun4i_dclk_free(tcon);
1267 sun4i_tcon_free_clocks(tcon);
1269 reset_control_assert(tcon->lcd_rst);
1273 static void sun4i_tcon_unbind(struct device *dev, struct device *master,
1276 struct sun4i_tcon *tcon = dev_get_drvdata(dev);
1278 list_del(&tcon->list);
1279 if (tcon->quirks->has_channel_0)
1280 sun4i_dclk_free(tcon);
1281 sun4i_tcon_free_clocks(tcon);
1284 static const struct component_ops sun4i_tcon_ops = {
1285 .bind = sun4i_tcon_bind,
1286 .unbind = sun4i_tcon_unbind,
1289 static int sun4i_tcon_probe(struct platform_device *pdev)
1291 struct device_node *node = pdev->dev.of_node;
1292 const struct sun4i_tcon_quirks *quirks;
1293 struct drm_bridge *bridge;
1294 struct drm_panel *panel;
1297 quirks = of_device_get_match_data(&pdev->dev);
1299 /* panels and bridges are present only on TCONs with channel 0 */
1300 if (quirks->has_channel_0) {
1301 ret = drm_of_find_panel_or_bridge(node, 1, 0, &panel, &bridge);
1302 if (ret == -EPROBE_DEFER)
1306 return component_add(&pdev->dev, &sun4i_tcon_ops);
1309 static int sun4i_tcon_remove(struct platform_device *pdev)
1311 component_del(&pdev->dev, &sun4i_tcon_ops);
1316 /* platform specific TCON muxing callbacks */
1317 static int sun4i_a10_tcon_set_mux(struct sun4i_tcon *tcon,
1318 const struct drm_encoder *encoder)
1320 struct sun4i_tcon *tcon0 = sun4i_get_tcon0(encoder->dev);
1326 switch (encoder->encoder_type) {
1327 case DRM_MODE_ENCODER_TMDS:
1335 regmap_update_bits(tcon0->regs, SUN4I_TCON_MUX_CTRL_REG,
1336 0x3 << shift, tcon->id << shift);
1341 static int sun5i_a13_tcon_set_mux(struct sun4i_tcon *tcon,
1342 const struct drm_encoder *encoder)
1346 if (encoder->encoder_type == DRM_MODE_ENCODER_TVDAC)
1352 * FIXME: Undocumented bits
1354 return regmap_write(tcon->regs, SUN4I_TCON_MUX_CTRL_REG, val);
1357 static int sun6i_tcon_set_mux(struct sun4i_tcon *tcon,
1358 const struct drm_encoder *encoder)
1360 struct sun4i_tcon *tcon0 = sun4i_get_tcon0(encoder->dev);
1366 switch (encoder->encoder_type) {
1367 case DRM_MODE_ENCODER_TMDS:
1372 /* TODO A31 has MIPI DSI but A31s does not */
1376 regmap_update_bits(tcon0->regs, SUN4I_TCON_MUX_CTRL_REG,
1377 0x3 << shift, tcon->id << shift);
1382 static int sun8i_r40_tcon_tv_set_mux(struct sun4i_tcon *tcon,
1383 const struct drm_encoder *encoder)
1385 struct device_node *port, *remote;
1386 struct platform_device *pdev;
1389 /* find TCON TOP platform device and TCON id */
1391 port = of_graph_get_port_by_id(tcon->dev->of_node, 0);
1395 id = sun4i_tcon_of_get_id_from_port(port);
1398 remote = of_graph_get_remote_node(tcon->dev->of_node, 0, -1);
1402 pdev = of_find_device_by_node(remote);
1403 of_node_put(remote);
1407 if (IS_ENABLED(CONFIG_DRM_SUN8I_TCON_TOP) &&
1408 encoder->encoder_type == DRM_MODE_ENCODER_TMDS) {
1409 ret = sun8i_tcon_top_set_hdmi_src(&pdev->dev, id);
1414 if (IS_ENABLED(CONFIG_DRM_SUN8I_TCON_TOP)) {
1415 ret = sun8i_tcon_top_de_config(&pdev->dev, tcon->id, id);
1423 static const struct sun4i_tcon_quirks sun4i_a10_quirks = {
1424 .has_channel_0 = true,
1425 .has_channel_1 = true,
1426 .set_mux = sun4i_a10_tcon_set_mux,
1429 static const struct sun4i_tcon_quirks sun5i_a13_quirks = {
1430 .has_channel_0 = true,
1431 .has_channel_1 = true,
1432 .set_mux = sun5i_a13_tcon_set_mux,
1435 static const struct sun4i_tcon_quirks sun6i_a31_quirks = {
1436 .has_channel_0 = true,
1437 .has_channel_1 = true,
1438 .has_lvds_alt = true,
1439 .needs_de_be_mux = true,
1440 .set_mux = sun6i_tcon_set_mux,
1443 static const struct sun4i_tcon_quirks sun6i_a31s_quirks = {
1444 .has_channel_0 = true,
1445 .has_channel_1 = true,
1446 .needs_de_be_mux = true,
1449 static const struct sun4i_tcon_quirks sun7i_a20_quirks = {
1450 .has_channel_0 = true,
1451 .has_channel_1 = true,
1452 /* Same display pipeline structure as A10 */
1453 .set_mux = sun4i_a10_tcon_set_mux,
1456 static const struct sun4i_tcon_quirks sun8i_a33_quirks = {
1457 .has_channel_0 = true,
1458 .has_lvds_alt = true,
1461 static const struct sun4i_tcon_quirks sun8i_a83t_lcd_quirks = {
1462 .supports_lvds = true,
1463 .has_channel_0 = true,
1466 static const struct sun4i_tcon_quirks sun8i_a83t_tv_quirks = {
1467 .has_channel_1 = true,
1470 static const struct sun4i_tcon_quirks sun8i_r40_tv_quirks = {
1471 .has_channel_1 = true,
1472 .set_mux = sun8i_r40_tcon_tv_set_mux,
1475 static const struct sun4i_tcon_quirks sun8i_v3s_quirks = {
1476 .has_channel_0 = true,
1479 static const struct sun4i_tcon_quirks sun9i_a80_tcon_lcd_quirks = {
1480 .has_channel_0 = true,
1481 .needs_edp_reset = true,
1484 static const struct sun4i_tcon_quirks sun9i_a80_tcon_tv_quirks = {
1485 .has_channel_1 = true,
1486 .needs_edp_reset = true,
1489 /* sun4i_drv uses this list to check if a device node is a TCON */
1490 const struct of_device_id sun4i_tcon_of_table[] = {
1491 { .compatible = "allwinner,sun4i-a10-tcon", .data = &sun4i_a10_quirks },
1492 { .compatible = "allwinner,sun5i-a13-tcon", .data = &sun5i_a13_quirks },
1493 { .compatible = "allwinner,sun6i-a31-tcon", .data = &sun6i_a31_quirks },
1494 { .compatible = "allwinner,sun6i-a31s-tcon", .data = &sun6i_a31s_quirks },
1495 { .compatible = "allwinner,sun7i-a20-tcon", .data = &sun7i_a20_quirks },
1496 { .compatible = "allwinner,sun8i-a33-tcon", .data = &sun8i_a33_quirks },
1497 { .compatible = "allwinner,sun8i-a83t-tcon-lcd", .data = &sun8i_a83t_lcd_quirks },
1498 { .compatible = "allwinner,sun8i-a83t-tcon-tv", .data = &sun8i_a83t_tv_quirks },
1499 { .compatible = "allwinner,sun8i-r40-tcon-tv", .data = &sun8i_r40_tv_quirks },
1500 { .compatible = "allwinner,sun8i-v3s-tcon", .data = &sun8i_v3s_quirks },
1501 { .compatible = "allwinner,sun9i-a80-tcon-lcd", .data = &sun9i_a80_tcon_lcd_quirks },
1502 { .compatible = "allwinner,sun9i-a80-tcon-tv", .data = &sun9i_a80_tcon_tv_quirks },
1505 MODULE_DEVICE_TABLE(of, sun4i_tcon_of_table);
1506 EXPORT_SYMBOL(sun4i_tcon_of_table);
1508 static struct platform_driver sun4i_tcon_platform_driver = {
1509 .probe = sun4i_tcon_probe,
1510 .remove = sun4i_tcon_remove,
1512 .name = "sun4i-tcon",
1513 .of_match_table = sun4i_tcon_of_table,
1516 module_platform_driver(sun4i_tcon_platform_driver);
1518 MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");
1519 MODULE_DESCRIPTION("Allwinner A10 Timing Controller Driver");
1520 MODULE_LICENSE("GPL");