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");