| // 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->dsi->dev, |
| &osd101t2587_panel_funcs, DRM_MODE_CONNECTOR_DSI); |
| |
| 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"); |