// SPDX-License-Identifier: GPL-2.0 /* * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com * Author: Peter Ujfalusi <peter.ujfalusi@ti.com> */ #include <linux/backlight.h> #include <linux/module.h> #include <linux/of.h> #include <linux/regulator/consumer.h> #include <drm/drm_crtc.h> #include <drm/drm_device.h> #include <drm/drm_mipi_dsi.h> #include <drm/drm_panel.h> #include <video/mipi_display.h> struct osd101t2587_panel { struct drm_panel base; struct mipi_dsi_device *dsi; struct backlight_device *backlight; struct regulator *supply; bool prepared; bool enabled; const struct drm_display_mode *default_mode; }; static inline struct osd101t2587_panel *ti_osd_panel(struct drm_panel *panel) { return container_of(panel, struct osd101t2587_panel, base); } static int osd101t2587_panel_disable(struct drm_panel *panel) { struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel); int ret; if (!osd101t2587->enabled) return 0; backlight_disable(osd101t2587->backlight); ret = mipi_dsi_shutdown_peripheral(osd101t2587->dsi); osd101t2587->enabled = false; return ret; } static int osd101t2587_panel_unprepare(struct drm_panel *panel) { struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel); if (!osd101t2587->prepared) return 0; regulator_disable(osd101t2587->supply); osd101t2587->prepared = false; return 0; } static int osd101t2587_panel_prepare(struct drm_panel *panel) { struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel); int ret; if (osd101t2587->prepared) return 0; ret = regulator_enable(osd101t2587->supply); if (!ret) osd101t2587->prepared = true; return ret; } static int osd101t2587_panel_enable(struct drm_panel *panel) { struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel); int ret; if (osd101t2587->enabled) return 0; ret = mipi_dsi_turn_on_peripheral(osd101t2587->dsi); if (ret) return ret; backlight_enable(osd101t2587->backlight); osd101t2587->enabled = true; return ret; } static const struct drm_display_mode default_mode_osd101t2587 = { .clock = 164400, .hdisplay = 1920, .hsync_start = 1920 + 152, .hsync_end = 1920 + 152 + 52, .htotal = 1920 + 152 + 52 + 20, .vdisplay = 1200, .vsync_start = 1200 + 24, .vsync_end = 1200 + 24 + 6, .vtotal = 1200 + 24 + 6 + 48, .vrefresh = 60, .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, }; static int osd101t2587_panel_get_modes(struct drm_panel *panel) { struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel); struct drm_display_mode *mode; mode = drm_mode_duplicate(panel->drm, osd101t2587->default_mode); if (!mode) { dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n", osd101t2587->default_mode->hdisplay, osd101t2587->default_mode->vdisplay, osd101t2587->default_mode->vrefresh); return -ENOMEM; } drm_mode_set_name(mode); drm_mode_probed_add(panel->connector, mode); panel->connector->display_info.width_mm = 217; panel->connector->display_info.height_mm = 136; return 1; } static const struct drm_panel_funcs osd101t2587_panel_funcs = { .disable = osd101t2587_panel_disable, .unprepare = osd101t2587_panel_unprepare, .prepare = osd101t2587_panel_prepare, .enable = osd101t2587_panel_enable, .get_modes = osd101t2587_panel_get_modes, }; static const struct of_device_id osd101t2587_of_match[] = { { .compatible = "osddisplays,osd101t2587-53ts", .data = &default_mode_osd101t2587, }, { /* sentinel */ } }; MODULE_DEVICE_TABLE(of, osd101t2587_of_match); static int osd101t2587_panel_add(struct osd101t2587_panel *osd101t2587) { struct device *dev = &osd101t2587->dsi->dev; osd101t2587->supply = devm_regulator_get(dev, "power"); if (IS_ERR(osd101t2587->supply)) return PTR_ERR(osd101t2587->supply); osd101t2587->backlight = devm_of_find_backlight(dev); if (IS_ERR(osd101t2587->backlight)) return PTR_ERR(osd101t2587->backlight); drm_panel_init(&osd101t2587->base); osd101t2587->base.funcs = &osd101t2587_panel_funcs; osd101t2587->base.dev = &osd101t2587->dsi->dev; return drm_panel_add(&osd101t2587->base); } static int osd101t2587_panel_probe(struct mipi_dsi_device *dsi) { struct osd101t2587_panel *osd101t2587; const struct of_device_id *id; int ret; id = of_match_node(osd101t2587_of_match, dsi->dev.of_node); if (!id) return -ENODEV; dsi->lanes = 4; dsi->format = MIPI_DSI_FMT_RGB888; dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST | MIPI_DSI_MODE_VIDEO_SYNC_PULSE | MIPI_DSI_MODE_EOT_PACKET; osd101t2587 = devm_kzalloc(&dsi->dev, sizeof(*osd101t2587), GFP_KERNEL); if (!osd101t2587) return -ENOMEM; mipi_dsi_set_drvdata(dsi, osd101t2587); osd101t2587->dsi = dsi; osd101t2587->default_mode = id->data; ret = osd101t2587_panel_add(osd101t2587); if (ret < 0) return ret; ret = mipi_dsi_attach(dsi); if (ret) drm_panel_remove(&osd101t2587->base); return ret; } static int osd101t2587_panel_remove(struct mipi_dsi_device *dsi) { struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi); int ret; ret = osd101t2587_panel_disable(&osd101t2587->base); if (ret < 0) dev_warn(&dsi->dev, "failed to disable panel: %d\n", ret); osd101t2587_panel_unprepare(&osd101t2587->base); drm_panel_remove(&osd101t2587->base); ret = mipi_dsi_detach(dsi); if (ret < 0) dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret); return ret; } static void osd101t2587_panel_shutdown(struct mipi_dsi_device *dsi) { struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi); osd101t2587_panel_disable(&osd101t2587->base); osd101t2587_panel_unprepare(&osd101t2587->base); } static struct mipi_dsi_driver osd101t2587_panel_driver = { .driver = { .name = "panel-osd-osd101t2587-53ts", .of_match_table = osd101t2587_of_match, }, .probe = osd101t2587_panel_probe, .remove = osd101t2587_panel_remove, .shutdown = osd101t2587_panel_shutdown, }; module_mipi_dsi_driver(osd101t2587_panel_driver); MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>"); MODULE_DESCRIPTION("OSD101T2587-53TS DSI panel"); MODULE_LICENSE("GPL v2");