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- /*
- * Copyright (C) 2013, NVIDIA Corporation. All rights reserved.
- *
- * Permission is hereby granted, free of charge, to any person obtaining a
- * copy of this software and associated documentation files (the "Software"),
- * to deal in the Software without restriction, including without limitation
- * the rights to use, copy, modify, merge, publish, distribute, sub license,
- * and/or sell copies of the Software, and to permit persons to whom the
- * Software is furnished to do so, subject to the following conditions:
- *
- * The above copyright notice and this permission notice (including the
- * next paragraph) shall be included in all copies or substantial portions
- * of the Software.
- *
- * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
- * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
- * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL
- * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
- * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
- * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
- * DEALINGS IN THE SOFTWARE.
- */
- #include <linux/backlight.h>
- #include <linux/gpio/consumer.h>
- #include <linux/module.h>
- #include <linux/of_platform.h>
- #include <linux/platform_device.h>
- #include <linux/regulator/consumer.h>
- #include <drm/drmP.h>
- #include <drm/drm_crtc.h>
- #include <drm/drm_mipi_dsi.h>
- #include <drm/drm_panel.h>
- struct panel_desc {
- const struct drm_display_mode *modes;
- unsigned int num_modes;
- struct {
- unsigned int width;
- unsigned int height;
- } size;
- };
- struct panel_simple {
- struct drm_panel base;
- bool enabled;
- const struct panel_desc *desc;
- struct backlight_device *backlight;
- struct regulator *supply;
- struct i2c_adapter *ddc;
- struct gpio_desc *enable_gpio;
- };
- static inline struct panel_simple *to_panel_simple(struct drm_panel *panel)
- {
- return container_of(panel, struct panel_simple, base);
- }
- static int panel_simple_get_fixed_modes(struct panel_simple *panel)
- {
- struct drm_connector *connector = panel->base.connector;
- struct drm_device *drm = panel->base.drm;
- struct drm_display_mode *mode;
- unsigned int i, num = 0;
- if (!panel->desc)
- return 0;
- for (i = 0; i < panel->desc->num_modes; i++) {
- const struct drm_display_mode *m = &panel->desc->modes[i];
- mode = drm_mode_duplicate(drm, m);
- if (!mode) {
- dev_err(drm->dev, "failed to add mode %ux%u@%u\n",
- m->hdisplay, m->vdisplay, m->vrefresh);
- continue;
- }
- drm_mode_set_name(mode);
- drm_mode_probed_add(connector, mode);
- num++;
- }
- connector->display_info.width_mm = panel->desc->size.width;
- connector->display_info.height_mm = panel->desc->size.height;
- return num;
- }
- static int panel_simple_disable(struct drm_panel *panel)
- {
- struct panel_simple *p = to_panel_simple(panel);
- if (!p->enabled)
- return 0;
- if (p->backlight) {
- p->backlight->props.power = FB_BLANK_POWERDOWN;
- backlight_update_status(p->backlight);
- }
- if (p->enable_gpio)
- gpiod_set_value_cansleep(p->enable_gpio, 0);
- regulator_disable(p->supply);
- p->enabled = false;
- return 0;
- }
- static int panel_simple_enable(struct drm_panel *panel)
- {
- struct panel_simple *p = to_panel_simple(panel);
- int err;
- if (p->enabled)
- return 0;
- err = regulator_enable(p->supply);
- if (err < 0) {
- dev_err(panel->dev, "failed to enable supply: %d\n", err);
- return err;
- }
- if (p->enable_gpio)
- gpiod_set_value_cansleep(p->enable_gpio, 1);
- if (p->backlight) {
- p->backlight->props.power = FB_BLANK_UNBLANK;
- backlight_update_status(p->backlight);
- }
- p->enabled = true;
- return 0;
- }
- static int panel_simple_get_modes(struct drm_panel *panel)
- {
- struct panel_simple *p = to_panel_simple(panel);
- int num = 0;
- /* probe EDID if a DDC bus is available */
- if (p->ddc) {
- struct edid *edid = drm_get_edid(panel->connector, p->ddc);
- drm_mode_connector_update_edid_property(panel->connector, edid);
- if (edid) {
- num += drm_add_edid_modes(panel->connector, edid);
- kfree(edid);
- }
- }
- /* add hard-coded panel modes */
- num += panel_simple_get_fixed_modes(p);
- return num;
- }
- static const struct drm_panel_funcs panel_simple_funcs = {
- .disable = panel_simple_disable,
- .enable = panel_simple_enable,
- .get_modes = panel_simple_get_modes,
- };
- static int panel_simple_probe(struct device *dev, const struct panel_desc *desc)
- {
- struct device_node *backlight, *ddc;
- struct panel_simple *panel;
- int err;
- panel = devm_kzalloc(dev, sizeof(*panel), GFP_KERNEL);
- if (!panel)
- return -ENOMEM;
- panel->enabled = false;
- panel->desc = desc;
- panel->supply = devm_regulator_get(dev, "power");
- if (IS_ERR(panel->supply))
- return PTR_ERR(panel->supply);
- panel->enable_gpio = devm_gpiod_get(dev, "enable");
- if (IS_ERR(panel->enable_gpio)) {
- err = PTR_ERR(panel->enable_gpio);
- if (err != -ENOENT) {
- dev_err(dev, "failed to request GPIO: %d\n", err);
- return err;
- }
- panel->enable_gpio = NULL;
- } else {
- err = gpiod_direction_output(panel->enable_gpio, 0);
- if (err < 0) {
- dev_err(dev, "failed to setup GPIO: %d\n", err);
- return err;
- }
- }
- backlight = of_parse_phandle(dev->of_node, "backlight", 0);
- if (backlight) {
- panel->backlight = of_find_backlight_by_node(backlight);
- of_node_put(backlight);
- if (!panel->backlight)
- return -EPROBE_DEFER;
- }
- ddc = of_parse_phandle(dev->of_node, "ddc-i2c-bus", 0);
- if (ddc) {
- panel->ddc = of_find_i2c_adapter_by_node(ddc);
- of_node_put(ddc);
- if (!panel->ddc) {
- err = -EPROBE_DEFER;
- goto free_backlight;
- }
- }
- drm_panel_init(&panel->base);
- panel->base.dev = dev;
- panel->base.funcs = &panel_simple_funcs;
- err = drm_panel_add(&panel->base);
- if (err < 0)
- goto free_ddc;
- dev_set_drvdata(dev, panel);
- return 0;
- free_ddc:
- if (panel->ddc)
- put_device(&panel->ddc->dev);
- free_backlight:
- if (panel->backlight)
- put_device(&panel->backlight->dev);
- return err;
- }
- static int panel_simple_remove(struct device *dev)
- {
- struct panel_simple *panel = dev_get_drvdata(dev);
- drm_panel_detach(&panel->base);
- drm_panel_remove(&panel->base);
- panel_simple_disable(&panel->base);
- if (panel->ddc)
- put_device(&panel->ddc->dev);
- if (panel->backlight)
- put_device(&panel->backlight->dev);
- return 0;
- }
- static void panel_simple_shutdown(struct device *dev)
- {
- struct panel_simple *panel = dev_get_drvdata(dev);
- panel_simple_disable(&panel->base);
- }
- static const struct drm_display_mode auo_b101aw03_mode = {
- .clock = 51450,
- .hdisplay = 1024,
- .hsync_start = 1024 + 156,
- .hsync_end = 1024 + 156 + 8,
- .htotal = 1024 + 156 + 8 + 156,
- .vdisplay = 600,
- .vsync_start = 600 + 16,
- .vsync_end = 600 + 16 + 6,
- .vtotal = 600 + 16 + 6 + 16,
- .vrefresh = 60,
- };
- static const struct panel_desc auo_b101aw03 = {
- .modes = &auo_b101aw03_mode,
- .num_modes = 1,
- .size = {
- .width = 223,
- .height = 125,
- },
- };
- static const struct drm_display_mode auo_b133xtn01_mode = {
- .clock = 69500,
- .hdisplay = 1366,
- .hsync_start = 1366 + 48,
- .hsync_end = 1366 + 48 + 32,
- .htotal = 1366 + 48 + 32 + 20,
- .vdisplay = 768,
- .vsync_start = 768 + 3,
- .vsync_end = 768 + 3 + 6,
- .vtotal = 768 + 3 + 6 + 13,
- .vrefresh = 60,
- };
- static const struct panel_desc auo_b133xtn01 = {
- .modes = &auo_b133xtn01_mode,
- .num_modes = 1,
- .size = {
- .width = 293,
- .height = 165,
- },
- };
- static const struct drm_display_mode chunghwa_claa101wa01a_mode = {
- .clock = 72070,
- .hdisplay = 1366,
- .hsync_start = 1366 + 58,
- .hsync_end = 1366 + 58 + 58,
- .htotal = 1366 + 58 + 58 + 58,
- .vdisplay = 768,
- .vsync_start = 768 + 4,
- .vsync_end = 768 + 4 + 4,
- .vtotal = 768 + 4 + 4 + 4,
- .vrefresh = 60,
- };
- static const struct panel_desc chunghwa_claa101wa01a = {
- .modes = &chunghwa_claa101wa01a_mode,
- .num_modes = 1,
- .size = {
- .width = 220,
- .height = 120,
- },
- };
- static const struct drm_display_mode chunghwa_claa101wb01_mode = {
- .clock = 69300,
- .hdisplay = 1366,
- .hsync_start = 1366 + 48,
- .hsync_end = 1366 + 48 + 32,
- .htotal = 1366 + 48 + 32 + 20,
- .vdisplay = 768,
- .vsync_start = 768 + 16,
- .vsync_end = 768 + 16 + 8,
- .vtotal = 768 + 16 + 8 + 16,
- .vrefresh = 60,
- };
- static const struct panel_desc chunghwa_claa101wb01 = {
- .modes = &chunghwa_claa101wb01_mode,
- .num_modes = 1,
- .size = {
- .width = 223,
- .height = 125,
- },
- };
- static const struct drm_display_mode edt_et057090dhu_mode = {
- .clock = 25175,
- .hdisplay = 640,
- .hsync_start = 640 + 16,
- .hsync_end = 640 + 16 + 30,
- .htotal = 640 + 16 + 30 + 114,
- .vdisplay = 480,
- .vsync_start = 480 + 10,
- .vsync_end = 480 + 10 + 3,
- .vtotal = 480 + 10 + 3 + 32,
- .vrefresh = 60,
- .flags = DRM_MODE_FLAG_NVSYNC | DRM_MODE_FLAG_NHSYNC,
- };
- static const struct panel_desc edt_et057090dhu = {
- .modes = &edt_et057090dhu_mode,
- .num_modes = 1,
- .size = {
- .width = 115,
- .height = 86,
- },
- };
- static const struct drm_display_mode edt_etm0700g0dh6_mode = {
- .clock = 33260,
- .hdisplay = 800,
- .hsync_start = 800 + 40,
- .hsync_end = 800 + 40 + 128,
- .htotal = 800 + 40 + 128 + 88,
- .vdisplay = 480,
- .vsync_start = 480 + 10,
- .vsync_end = 480 + 10 + 2,
- .vtotal = 480 + 10 + 2 + 33,
- .vrefresh = 60,
- .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
- };
- static const struct panel_desc edt_etm0700g0dh6 = {
- .modes = &edt_etm0700g0dh6_mode,
- .num_modes = 1,
- .size = {
- .width = 152,
- .height = 91,
- },
- };
- static const struct drm_display_mode lg_lp129qe_mode = {
- .clock = 285250,
- .hdisplay = 2560,
- .hsync_start = 2560 + 48,
- .hsync_end = 2560 + 48 + 32,
- .htotal = 2560 + 48 + 32 + 80,
- .vdisplay = 1700,
- .vsync_start = 1700 + 3,
- .vsync_end = 1700 + 3 + 10,
- .vtotal = 1700 + 3 + 10 + 36,
- .vrefresh = 60,
- };
- static const struct panel_desc lg_lp129qe = {
- .modes = &lg_lp129qe_mode,
- .num_modes = 1,
- .size = {
- .width = 272,
- .height = 181,
- },
- };
- static const struct drm_display_mode samsung_ltn101nt05_mode = {
- .clock = 54030,
- .hdisplay = 1024,
- .hsync_start = 1024 + 24,
- .hsync_end = 1024 + 24 + 136,
- .htotal = 1024 + 24 + 136 + 160,
- .vdisplay = 600,
- .vsync_start = 600 + 3,
- .vsync_end = 600 + 3 + 6,
- .vtotal = 600 + 3 + 6 + 61,
- .vrefresh = 60,
- };
- static const struct panel_desc samsung_ltn101nt05 = {
- .modes = &samsung_ltn101nt05_mode,
- .num_modes = 1,
- .size = {
- .width = 1024,
- .height = 600,
- },
- };
- static const struct of_device_id platform_of_match[] = {
- {
- .compatible = "auo,b101aw03",
- .data = &auo_b101aw03,
- }, {
- .compatible = "auo,b133xtn01",
- .data = &auo_b133xtn01,
- }, {
- .compatible = "chunghwa,claa101wa01a",
- .data = &chunghwa_claa101wa01a
- }, {
- .compatible = "chunghwa,claa101wb01",
- .data = &chunghwa_claa101wb01
- }, {
- .compatible = "edt,et057090dhu",
- .data = &edt_et057090dhu,
- }, {
- .compatible = "edt,et070080dh6",
- .data = &edt_etm0700g0dh6,
- }, {
- .compatible = "edt,etm0700g0dh6",
- .data = &edt_etm0700g0dh6,
- }, {
- .compatible = "lg,lp129qe",
- .data = &lg_lp129qe,
- }, {
- .compatible = "samsung,ltn101nt05",
- .data = &samsung_ltn101nt05,
- }, {
- .compatible = "simple-panel",
- }, {
- /* sentinel */
- }
- };
- MODULE_DEVICE_TABLE(of, platform_of_match);
- static int panel_simple_platform_probe(struct platform_device *pdev)
- {
- const struct of_device_id *id;
- id = of_match_node(platform_of_match, pdev->dev.of_node);
- if (!id)
- return -ENODEV;
- return panel_simple_probe(&pdev->dev, id->data);
- }
- static int panel_simple_platform_remove(struct platform_device *pdev)
- {
- return panel_simple_remove(&pdev->dev);
- }
- static void panel_simple_platform_shutdown(struct platform_device *pdev)
- {
- panel_simple_shutdown(&pdev->dev);
- }
- static struct platform_driver panel_simple_platform_driver = {
- .driver = {
- .name = "panel-simple",
- .owner = THIS_MODULE,
- .of_match_table = platform_of_match,
- },
- .probe = panel_simple_platform_probe,
- .remove = panel_simple_platform_remove,
- .shutdown = panel_simple_platform_shutdown,
- };
- struct panel_desc_dsi {
- struct panel_desc desc;
- unsigned long flags;
- enum mipi_dsi_pixel_format format;
- unsigned int lanes;
- };
- static const struct drm_display_mode lg_ld070wx3_sl01_mode = {
- .clock = 71000,
- .hdisplay = 800,
- .hsync_start = 800 + 32,
- .hsync_end = 800 + 32 + 1,
- .htotal = 800 + 32 + 1 + 57,
- .vdisplay = 1280,
- .vsync_start = 1280 + 28,
- .vsync_end = 1280 + 28 + 1,
- .vtotal = 1280 + 28 + 1 + 14,
- .vrefresh = 60,
- };
- static const struct panel_desc_dsi lg_ld070wx3_sl01 = {
- .desc = {
- .modes = &lg_ld070wx3_sl01_mode,
- .num_modes = 1,
- .size = {
- .width = 94,
- .height = 151,
- },
- },
- .flags = MIPI_DSI_MODE_VIDEO,
- .format = MIPI_DSI_FMT_RGB888,
- .lanes = 4,
- };
- static const struct drm_display_mode lg_lh500wx1_sd03_mode = {
- .clock = 67000,
- .hdisplay = 720,
- .hsync_start = 720 + 12,
- .hsync_end = 720 + 12 + 4,
- .htotal = 720 + 12 + 4 + 112,
- .vdisplay = 1280,
- .vsync_start = 1280 + 8,
- .vsync_end = 1280 + 8 + 4,
- .vtotal = 1280 + 8 + 4 + 12,
- .vrefresh = 60,
- };
- static const struct panel_desc_dsi lg_lh500wx1_sd03 = {
- .desc = {
- .modes = &lg_lh500wx1_sd03_mode,
- .num_modes = 1,
- .size = {
- .width = 62,
- .height = 110,
- },
- },
- .flags = MIPI_DSI_MODE_VIDEO,
- .format = MIPI_DSI_FMT_RGB888,
- .lanes = 4,
- };
- static const struct drm_display_mode panasonic_vvx10f004b00_mode = {
- .clock = 157200,
- .hdisplay = 1920,
- .hsync_start = 1920 + 154,
- .hsync_end = 1920 + 154 + 16,
- .htotal = 1920 + 154 + 16 + 32,
- .vdisplay = 1200,
- .vsync_start = 1200 + 17,
- .vsync_end = 1200 + 17 + 2,
- .vtotal = 1200 + 17 + 2 + 16,
- .vrefresh = 60,
- };
- static const struct panel_desc_dsi panasonic_vvx10f004b00 = {
- .desc = {
- .modes = &panasonic_vvx10f004b00_mode,
- .num_modes = 1,
- .size = {
- .width = 217,
- .height = 136,
- },
- },
- .flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_SYNC_PULSE,
- .format = MIPI_DSI_FMT_RGB888,
- .lanes = 4,
- };
- static const struct of_device_id dsi_of_match[] = {
- {
- .compatible = "lg,ld070wx3-sl01",
- .data = &lg_ld070wx3_sl01
- }, {
- .compatible = "lg,lh500wx1-sd03",
- .data = &lg_lh500wx1_sd03
- }, {
- .compatible = "panasonic,vvx10f004b00",
- .data = &panasonic_vvx10f004b00
- }, {
- /* sentinel */
- }
- };
- MODULE_DEVICE_TABLE(of, dsi_of_match);
- static int panel_simple_dsi_probe(struct mipi_dsi_device *dsi)
- {
- const struct panel_desc_dsi *desc;
- const struct of_device_id *id;
- int err;
- id = of_match_node(dsi_of_match, dsi->dev.of_node);
- if (!id)
- return -ENODEV;
- desc = id->data;
- err = panel_simple_probe(&dsi->dev, &desc->desc);
- if (err < 0)
- return err;
- dsi->mode_flags = desc->flags;
- dsi->format = desc->format;
- dsi->lanes = desc->lanes;
- return mipi_dsi_attach(dsi);
- }
- static int panel_simple_dsi_remove(struct mipi_dsi_device *dsi)
- {
- int err;
- err = mipi_dsi_detach(dsi);
- if (err < 0)
- dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
- return panel_simple_remove(&dsi->dev);
- }
- static void panel_simple_dsi_shutdown(struct mipi_dsi_device *dsi)
- {
- panel_simple_shutdown(&dsi->dev);
- }
- static struct mipi_dsi_driver panel_simple_dsi_driver = {
- .driver = {
- .name = "panel-simple-dsi",
- .owner = THIS_MODULE,
- .of_match_table = dsi_of_match,
- },
- .probe = panel_simple_dsi_probe,
- .remove = panel_simple_dsi_remove,
- .shutdown = panel_simple_dsi_shutdown,
- };
- static int __init panel_simple_init(void)
- {
- int err;
- err = platform_driver_register(&panel_simple_platform_driver);
- if (err < 0)
- return err;
- if (IS_ENABLED(CONFIG_DRM_MIPI_DSI)) {
- err = mipi_dsi_driver_register(&panel_simple_dsi_driver);
- if (err < 0)
- return err;
- }
- return 0;
- }
- module_init(panel_simple_init);
- static void __exit panel_simple_exit(void)
- {
- if (IS_ENABLED(CONFIG_DRM_MIPI_DSI))
- mipi_dsi_driver_unregister(&panel_simple_dsi_driver);
- platform_driver_unregister(&panel_simple_platform_driver);
- }
- module_exit(panel_simple_exit);
- MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
- MODULE_DESCRIPTION("DRM Driver for Simple Panels");
- MODULE_LICENSE("GPL and additional rights");
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