2 * Copyright (C) 2013, NVIDIA Corporation. All rights reserved.
4 * Permission is hereby granted, free of charge, to any person obtaining a
5 * copy of this software and associated documentation files (the "Software"),
6 * to deal in the Software without restriction, including without limitation
7 * the rights to use, copy, modify, merge, publish, distribute, sub license,
8 * and/or sell copies of the Software, and to permit persons to whom the
9 * Software is furnished to do so, subject to the following conditions:
11 * The above copyright notice and this permission notice (including the
12 * next paragraph) shall be included in all copies or substantial portions
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
17 * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
18 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
19 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
20 * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
21 * DEALINGS IN THE SOFTWARE.
24 #include <linux/backlight.h>
25 #include <linux/gpio/consumer.h>
26 #include <linux/module.h>
27 #include <linux/of_platform.h>
28 #include <linux/platform_device.h>
29 #include <linux/regulator/consumer.h>
32 #include <drm/drm_crtc.h>
33 #include <drm/drm_mipi_dsi.h>
34 #include <drm/drm_panel.h>
37 const struct drm_display_mode
*modes
;
38 unsigned int num_modes
;
47 struct drm_panel base
;
50 const struct panel_desc
*desc
;
52 struct backlight_device
*backlight
;
53 struct regulator
*supply
;
54 struct i2c_adapter
*ddc
;
56 struct gpio_desc
*enable_gpio
;
59 static inline struct panel_simple
*to_panel_simple(struct drm_panel
*panel
)
61 return container_of(panel
, struct panel_simple
, base
);
64 static int panel_simple_get_fixed_modes(struct panel_simple
*panel
)
66 struct drm_connector
*connector
= panel
->base
.connector
;
67 struct drm_device
*drm
= panel
->base
.drm
;
68 struct drm_display_mode
*mode
;
69 unsigned int i
, num
= 0;
74 for (i
= 0; i
< panel
->desc
->num_modes
; i
++) {
75 const struct drm_display_mode
*m
= &panel
->desc
->modes
[i
];
77 mode
= drm_mode_duplicate(drm
, m
);
79 dev_err(drm
->dev
, "failed to add mode %ux%u@%u\n",
80 m
->hdisplay
, m
->vdisplay
, m
->vrefresh
);
84 drm_mode_set_name(mode
);
86 drm_mode_probed_add(connector
, mode
);
90 connector
->display_info
.width_mm
= panel
->desc
->size
.width
;
91 connector
->display_info
.height_mm
= panel
->desc
->size
.height
;
96 static int panel_simple_disable(struct drm_panel
*panel
)
98 struct panel_simple
*p
= to_panel_simple(panel
);
104 p
->backlight
->props
.power
= FB_BLANK_POWERDOWN
;
105 backlight_update_status(p
->backlight
);
109 gpiod_set_value_cansleep(p
->enable_gpio
, 0);
111 regulator_disable(p
->supply
);
117 static int panel_simple_enable(struct drm_panel
*panel
)
119 struct panel_simple
*p
= to_panel_simple(panel
);
125 err
= regulator_enable(p
->supply
);
127 dev_err(panel
->dev
, "failed to enable supply: %d\n", err
);
132 gpiod_set_value_cansleep(p
->enable_gpio
, 1);
135 p
->backlight
->props
.power
= FB_BLANK_UNBLANK
;
136 backlight_update_status(p
->backlight
);
144 static int panel_simple_get_modes(struct drm_panel
*panel
)
146 struct panel_simple
*p
= to_panel_simple(panel
);
149 /* probe EDID if a DDC bus is available */
151 struct edid
*edid
= drm_get_edid(panel
->connector
, p
->ddc
);
152 drm_mode_connector_update_edid_property(panel
->connector
, edid
);
154 num
+= drm_add_edid_modes(panel
->connector
, edid
);
159 /* add hard-coded panel modes */
160 num
+= panel_simple_get_fixed_modes(p
);
165 static const struct drm_panel_funcs panel_simple_funcs
= {
166 .disable
= panel_simple_disable
,
167 .enable
= panel_simple_enable
,
168 .get_modes
= panel_simple_get_modes
,
171 static int panel_simple_probe(struct device
*dev
, const struct panel_desc
*desc
)
173 struct device_node
*backlight
, *ddc
;
174 struct panel_simple
*panel
;
177 panel
= devm_kzalloc(dev
, sizeof(*panel
), GFP_KERNEL
);
181 panel
->enabled
= false;
184 panel
->supply
= devm_regulator_get(dev
, "power");
185 if (IS_ERR(panel
->supply
))
186 return PTR_ERR(panel
->supply
);
188 panel
->enable_gpio
= devm_gpiod_get(dev
, "enable");
189 if (IS_ERR(panel
->enable_gpio
)) {
190 err
= PTR_ERR(panel
->enable_gpio
);
191 if (err
!= -ENOENT
) {
192 dev_err(dev
, "failed to request GPIO: %d\n", err
);
196 panel
->enable_gpio
= NULL
;
198 err
= gpiod_direction_output(panel
->enable_gpio
, 0);
200 dev_err(dev
, "failed to setup GPIO: %d\n", err
);
205 backlight
= of_parse_phandle(dev
->of_node
, "backlight", 0);
207 panel
->backlight
= of_find_backlight_by_node(backlight
);
208 of_node_put(backlight
);
210 if (!panel
->backlight
)
211 return -EPROBE_DEFER
;
214 ddc
= of_parse_phandle(dev
->of_node
, "ddc-i2c-bus", 0);
216 panel
->ddc
= of_find_i2c_adapter_by_node(ddc
);
225 drm_panel_init(&panel
->base
);
226 panel
->base
.dev
= dev
;
227 panel
->base
.funcs
= &panel_simple_funcs
;
229 err
= drm_panel_add(&panel
->base
);
233 dev_set_drvdata(dev
, panel
);
239 put_device(&panel
->ddc
->dev
);
241 if (panel
->backlight
)
242 put_device(&panel
->backlight
->dev
);
247 static int panel_simple_remove(struct device
*dev
)
249 struct panel_simple
*panel
= dev_get_drvdata(dev
);
251 drm_panel_detach(&panel
->base
);
252 drm_panel_remove(&panel
->base
);
254 panel_simple_disable(&panel
->base
);
257 put_device(&panel
->ddc
->dev
);
259 if (panel
->backlight
)
260 put_device(&panel
->backlight
->dev
);
265 static const struct drm_display_mode auo_b101aw03_mode
= {
268 .hsync_start
= 1024 + 156,
269 .hsync_end
= 1024 + 156 + 8,
270 .htotal
= 1024 + 156 + 8 + 156,
272 .vsync_start
= 600 + 16,
273 .vsync_end
= 600 + 16 + 6,
274 .vtotal
= 600 + 16 + 6 + 16,
278 static const struct panel_desc auo_b101aw03
= {
279 .modes
= &auo_b101aw03_mode
,
287 static const struct drm_display_mode chunghwa_claa101wa01a_mode
= {
290 .hsync_start
= 1366 + 58,
291 .hsync_end
= 1366 + 58 + 58,
292 .htotal
= 1366 + 58 + 58 + 58,
294 .vsync_start
= 768 + 4,
295 .vsync_end
= 768 + 4 + 4,
296 .vtotal
= 768 + 4 + 4 + 4,
300 static const struct panel_desc chunghwa_claa101wa01a
= {
301 .modes
= &chunghwa_claa101wa01a_mode
,
309 static const struct drm_display_mode chunghwa_claa101wb01_mode
= {
312 .hsync_start
= 1366 + 48,
313 .hsync_end
= 1366 + 48 + 32,
314 .htotal
= 1366 + 48 + 32 + 20,
316 .vsync_start
= 768 + 16,
317 .vsync_end
= 768 + 16 + 8,
318 .vtotal
= 768 + 16 + 8 + 16,
322 static const struct panel_desc chunghwa_claa101wb01
= {
323 .modes
= &chunghwa_claa101wb01_mode
,
331 static const struct drm_display_mode lg_lp129qe_mode
= {
334 .hsync_start
= 2560 + 48,
335 .hsync_end
= 2560 + 48 + 32,
336 .htotal
= 2560 + 48 + 32 + 80,
338 .vsync_start
= 1700 + 3,
339 .vsync_end
= 1700 + 3 + 10,
340 .vtotal
= 1700 + 3 + 10 + 36,
344 static const struct panel_desc lg_lp129qe
= {
345 .modes
= &lg_lp129qe_mode
,
353 static const struct drm_display_mode samsung_ltn101nt05_mode
= {
356 .hsync_start
= 1024 + 24,
357 .hsync_end
= 1024 + 24 + 136,
358 .htotal
= 1024 + 24 + 136 + 160,
360 .vsync_start
= 600 + 3,
361 .vsync_end
= 600 + 3 + 6,
362 .vtotal
= 600 + 3 + 6 + 61,
366 static const struct panel_desc samsung_ltn101nt05
= {
367 .modes
= &samsung_ltn101nt05_mode
,
375 static const struct of_device_id platform_of_match
[] = {
377 .compatible
= "auo,b101aw03",
378 .data
= &auo_b101aw03
,
380 .compatible
= "chunghwa,claa101wa01a",
381 .data
= &chunghwa_claa101wa01a
383 .compatible
= "chunghwa,claa101wb01",
384 .data
= &chunghwa_claa101wb01
386 .compatible
= "lg,lp129qe",
389 .compatible
= "samsung,ltn101nt05",
390 .data
= &samsung_ltn101nt05
,
392 .compatible
= "simple-panel",
397 MODULE_DEVICE_TABLE(of
, platform_of_match
);
399 static int panel_simple_platform_probe(struct platform_device
*pdev
)
401 const struct of_device_id
*id
;
403 id
= of_match_node(platform_of_match
, pdev
->dev
.of_node
);
407 return panel_simple_probe(&pdev
->dev
, id
->data
);
410 static int panel_simple_platform_remove(struct platform_device
*pdev
)
412 return panel_simple_remove(&pdev
->dev
);
415 static struct platform_driver panel_simple_platform_driver
= {
417 .name
= "panel-simple",
418 .owner
= THIS_MODULE
,
419 .of_match_table
= platform_of_match
,
421 .probe
= panel_simple_platform_probe
,
422 .remove
= panel_simple_platform_remove
,
425 struct panel_desc_dsi
{
426 struct panel_desc desc
;
429 enum mipi_dsi_pixel_format format
;
433 static const struct drm_display_mode lg_ld070wx3_sl01_mode
= {
436 .hsync_start
= 800 + 32,
437 .hsync_end
= 800 + 32 + 1,
438 .htotal
= 800 + 32 + 1 + 57,
440 .vsync_start
= 1280 + 28,
441 .vsync_end
= 1280 + 28 + 1,
442 .vtotal
= 1280 + 28 + 1 + 14,
446 static const struct panel_desc_dsi lg_ld070wx3_sl01
= {
448 .modes
= &lg_ld070wx3_sl01_mode
,
455 .flags
= MIPI_DSI_MODE_VIDEO
,
456 .format
= MIPI_DSI_FMT_RGB888
,
460 static const struct drm_display_mode lg_lh500wx1_sd03_mode
= {
463 .hsync_start
= 720 + 12,
464 .hsync_end
= 720 + 12 + 4,
465 .htotal
= 720 + 12 + 4 + 112,
467 .vsync_start
= 1280 + 8,
468 .vsync_end
= 1280 + 8 + 4,
469 .vtotal
= 1280 + 8 + 4 + 12,
473 static const struct panel_desc_dsi lg_lh500wx1_sd03
= {
475 .modes
= &lg_lh500wx1_sd03_mode
,
482 .flags
= MIPI_DSI_MODE_VIDEO
,
483 .format
= MIPI_DSI_FMT_RGB888
,
487 static const struct drm_display_mode panasonic_vvx10f004b00_mode
= {
490 .hsync_start
= 1920 + 154,
491 .hsync_end
= 1920 + 154 + 16,
492 .htotal
= 1920 + 154 + 16 + 32,
494 .vsync_start
= 1200 + 17,
495 .vsync_end
= 1200 + 17 + 2,
496 .vtotal
= 1200 + 17 + 2 + 16,
500 static const struct panel_desc_dsi panasonic_vvx10f004b00
= {
502 .modes
= &panasonic_vvx10f004b00_mode
,
509 .flags
= MIPI_DSI_MODE_VIDEO
| MIPI_DSI_MODE_VIDEO_SYNC_PULSE
,
510 .format
= MIPI_DSI_FMT_RGB888
,
514 static const struct of_device_id dsi_of_match
[] = {
516 .compatible
= "lg,ld070wx3-sl01",
517 .data
= &lg_ld070wx3_sl01
519 .compatible
= "lg,lh500wx1-sd03",
520 .data
= &lg_lh500wx1_sd03
522 .compatible
= "panasonic,vvx10f004b00",
523 .data
= &panasonic_vvx10f004b00
528 MODULE_DEVICE_TABLE(of
, dsi_of_match
);
530 static int panel_simple_dsi_probe(struct mipi_dsi_device
*dsi
)
532 const struct panel_desc_dsi
*desc
;
533 const struct of_device_id
*id
;
536 id
= of_match_node(dsi_of_match
, dsi
->dev
.of_node
);
542 err
= panel_simple_probe(&dsi
->dev
, &desc
->desc
);
546 dsi
->mode_flags
= desc
->flags
;
547 dsi
->format
= desc
->format
;
548 dsi
->lanes
= desc
->lanes
;
550 return mipi_dsi_attach(dsi
);
553 static int panel_simple_dsi_remove(struct mipi_dsi_device
*dsi
)
557 err
= mipi_dsi_detach(dsi
);
559 dev_err(&dsi
->dev
, "failed to detach from DSI host: %d\n", err
);
561 return panel_simple_remove(&dsi
->dev
);
564 static struct mipi_dsi_driver panel_simple_dsi_driver
= {
566 .name
= "panel-simple-dsi",
567 .owner
= THIS_MODULE
,
568 .of_match_table
= dsi_of_match
,
570 .probe
= panel_simple_dsi_probe
,
571 .remove
= panel_simple_dsi_remove
,
574 static int __init
panel_simple_init(void)
578 err
= platform_driver_register(&panel_simple_platform_driver
);
582 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI
)) {
583 err
= mipi_dsi_driver_register(&panel_simple_dsi_driver
);
590 module_init(panel_simple_init
);
592 static void __exit
panel_simple_exit(void)
594 if (IS_ENABLED(CONFIG_DRM_MIPI_DSI
))
595 mipi_dsi_driver_unregister(&panel_simple_dsi_driver
);
597 platform_driver_unregister(&panel_simple_platform_driver
);
599 module_exit(panel_simple_exit
);
601 MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
602 MODULE_DESCRIPTION("DRM Driver for Simple Panels");
603 MODULE_LICENSE("GPL and additional rights");