/* * 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 #include #include #include #include #include #include #include #include #include struct panel_desc { const struct drm_display_mode *modes; unsigned int num_modes; unsigned int bpc; struct { unsigned int width; unsigned int height; } size; /** * @prepare: the time (in milliseconds) that it takes for the panel to * become ready and start receiving video data * @enable: the time (in milliseconds) that it takes for the panel to * display the first valid frame after starting to receive * video data * @disable: the time (in milliseconds) that it takes for the panel to * turn the display off (no content is visible) * @unprepare: the time (in milliseconds) that it takes for the panel * to power itself down completely */ struct { unsigned int prepare; unsigned int enable; unsigned int disable; unsigned int unprepare; } delay; }; struct panel_simple { struct drm_panel base; bool prepared; 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.bpc = panel->desc->bpc; 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->desc->delay.disable) msleep(p->desc->delay.disable); p->enabled = false; return 0; } static int panel_simple_unprepare(struct drm_panel *panel) { struct panel_simple *p = to_panel_simple(panel); if (!p->prepared) return 0; if (p->enable_gpio) gpiod_set_value_cansleep(p->enable_gpio, 0); regulator_disable(p->supply); if (p->desc->delay.unprepare) msleep(p->desc->delay.unprepare); p->prepared = false; return 0; } static int panel_simple_prepare(struct drm_panel *panel) { struct panel_simple *p = to_panel_simple(panel); int err; if (p->prepared) 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->desc->delay.prepare) msleep(p->desc->delay.prepare); p->prepared = true; return 0; } static int panel_simple_enable(struct drm_panel *panel) { struct panel_simple *p = to_panel_simple(panel); if (p->enabled) return 0; if (p->desc->delay.enable) msleep(p->desc->delay.enable); 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, .unprepare = panel_simple_unprepare, .prepare = panel_simple_prepare, .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->prepared = 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_optional(dev, "enable"); if (IS_ERR(panel->enable_gpio)) { err = PTR_ERR(panel->enable_gpio); dev_err(dev, "failed to request GPIO: %d\n", err); return err; } if (panel->enable_gpio) { 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, .bpc = 6, .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, .bpc = 6, .size = { .width = 293, .height = 165, }, }; static const struct drm_display_mode auo_b133htn01_mode = { .clock = 150660, .hdisplay = 1920, .hsync_start = 1920 + 172, .hsync_end = 1920 + 172 + 80, .htotal = 1920 + 172 + 80 + 60, .vdisplay = 1080, .vsync_start = 1080 + 25, .vsync_end = 1080 + 25 + 10, .vtotal = 1080 + 25 + 10 + 10, .vrefresh = 60, }; static const struct panel_desc auo_b133htn01 = { .modes = &auo_b133htn01_mode, .num_modes = 1, .size = { .width = 293, .height = 165, }, .delay = { .prepare = 105, .enable = 20, .unprepare = 50, }, }; 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, .bpc = 6, .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, .bpc = 6, .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, .bpc = 6, .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, .bpc = 6, .size = { .width = 152, .height = 91, }, }; static const struct drm_display_mode foxlink_fl500wvr00_a0t_mode = { .clock = 32260, .hdisplay = 800, .hsync_start = 800 + 168, .hsync_end = 800 + 168 + 64, .htotal = 800 + 168 + 64 + 88, .vdisplay = 480, .vsync_start = 480 + 37, .vsync_end = 480 + 37 + 2, .vtotal = 480 + 37 + 2 + 8, .vrefresh = 60, }; static const struct panel_desc foxlink_fl500wvr00_a0t = { .modes = &foxlink_fl500wvr00_a0t_mode, .num_modes = 1, .size = { .width = 108, .height = 65, }, }; static const struct drm_display_mode innolux_n116bge_mode = { .clock = 71000, .hdisplay = 1366, .hsync_start = 1366 + 64, .hsync_end = 1366 + 64 + 6, .htotal = 1366 + 64 + 6 + 64, .vdisplay = 768, .vsync_start = 768 + 8, .vsync_end = 768 + 8 + 4, .vtotal = 768 + 8 + 4 + 8, .vrefresh = 60, .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, }; static const struct panel_desc innolux_n116bge = { .modes = &innolux_n116bge_mode, .num_modes = 1, .bpc = 6, .size = { .width = 256, .height = 144, }, }; static const struct drm_display_mode innolux_n156bge_l21_mode = { .clock = 69300, .hdisplay = 1366, .hsync_start = 1366 + 16, .hsync_end = 1366 + 16 + 34, .htotal = 1366 + 16 + 34 + 50, .vdisplay = 768, .vsync_start = 768 + 2, .vsync_end = 768 + 2 + 6, .vtotal = 768 + 2 + 6 + 12, .vrefresh = 60, }; static const struct panel_desc innolux_n156bge_l21 = { .modes = &innolux_n156bge_l21_mode, .num_modes = 1, .bpc = 6, .size = { .width = 344, .height = 193, }, }; 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, .bpc = 8, .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, .bpc = 6, .size = { .width = 1024, .height = 600, }, }; static const struct of_device_id platform_of_match[] = { { .compatible = "auo,b101aw03", .data = &auo_b101aw03, }, { .compatible = "auo,b133htn01", .data = &auo_b133htn01, }, { .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 = "foxlink,fl500wvr00-a0t", .data = &foxlink_fl500wvr00_a0t, }, { .compatible = "innolux,n116bge", .data = &innolux_n116bge, }, { .compatible = "innolux,n156bge-l21", .data = &innolux_n156bge_l21, }, { .compatible = "lg,lp129qe", .data = &lg_lp129qe, }, { .compatible = "samsung,ltn101nt05", .data = &samsung_ltn101nt05, }, { /* 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 | MIPI_DSI_CLOCK_NON_CONTINUOUS, .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 | MIPI_DSI_CLOCK_NON_CONTINUOUS, .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 "); MODULE_DESCRIPTION("DRM Driver for Simple Panels"); MODULE_LICENSE("GPL and additional rights");