209 lines · c
1// SPDX-License-Identifier: GPL-2.02/*3 * Copyright (C) 2019 Texas Instruments Incorporated - https://www.ti.com4 * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>5 */6 7#include <linux/module.h>8#include <linux/of.h>9#include <linux/regulator/consumer.h>10 11#include <drm/drm_crtc.h>12#include <drm/drm_device.h>13#include <drm/drm_mipi_dsi.h>14#include <drm/drm_panel.h>15 16#include <video/mipi_display.h>17 18struct osd101t2587_panel {19 struct drm_panel base;20 struct mipi_dsi_device *dsi;21 22 struct regulator *supply;23 24 const struct drm_display_mode *default_mode;25};26 27static inline struct osd101t2587_panel *ti_osd_panel(struct drm_panel *panel)28{29 return container_of(panel, struct osd101t2587_panel, base);30}31 32static int osd101t2587_panel_disable(struct drm_panel *panel)33{34 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);35 int ret;36 37 ret = mipi_dsi_shutdown_peripheral(osd101t2587->dsi);38 39 return ret;40}41 42static int osd101t2587_panel_unprepare(struct drm_panel *panel)43{44 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);45 46 regulator_disable(osd101t2587->supply);47 48 return 0;49}50 51static int osd101t2587_panel_prepare(struct drm_panel *panel)52{53 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);54 55 return regulator_enable(osd101t2587->supply);56}57 58static int osd101t2587_panel_enable(struct drm_panel *panel)59{60 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);61 int ret;62 63 ret = mipi_dsi_turn_on_peripheral(osd101t2587->dsi);64 if (ret)65 return ret;66 67 return ret;68}69 70static const struct drm_display_mode default_mode_osd101t2587 = {71 .clock = 164400,72 .hdisplay = 1920,73 .hsync_start = 1920 + 152,74 .hsync_end = 1920 + 152 + 52,75 .htotal = 1920 + 152 + 52 + 20,76 .vdisplay = 1200,77 .vsync_start = 1200 + 24,78 .vsync_end = 1200 + 24 + 6,79 .vtotal = 1200 + 24 + 6 + 48,80 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,81};82 83static int osd101t2587_panel_get_modes(struct drm_panel *panel,84 struct drm_connector *connector)85{86 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);87 struct drm_display_mode *mode;88 89 mode = drm_mode_duplicate(connector->dev, osd101t2587->default_mode);90 if (!mode) {91 dev_err(panel->dev, "failed to add mode %ux%ux@%u\n",92 osd101t2587->default_mode->hdisplay,93 osd101t2587->default_mode->vdisplay,94 drm_mode_vrefresh(osd101t2587->default_mode));95 return -ENOMEM;96 }97 98 drm_mode_set_name(mode);99 100 drm_mode_probed_add(connector, mode);101 102 connector->display_info.width_mm = 217;103 connector->display_info.height_mm = 136;104 105 return 1;106}107 108static const struct drm_panel_funcs osd101t2587_panel_funcs = {109 .disable = osd101t2587_panel_disable,110 .unprepare = osd101t2587_panel_unprepare,111 .prepare = osd101t2587_panel_prepare,112 .enable = osd101t2587_panel_enable,113 .get_modes = osd101t2587_panel_get_modes,114};115 116static const struct of_device_id osd101t2587_of_match[] = {117 {118 .compatible = "osddisplays,osd101t2587-53ts",119 .data = &default_mode_osd101t2587,120 }, {121 /* sentinel */122 }123};124MODULE_DEVICE_TABLE(of, osd101t2587_of_match);125 126static int osd101t2587_panel_add(struct osd101t2587_panel *osd101t2587)127{128 struct device *dev = &osd101t2587->dsi->dev;129 int ret;130 131 osd101t2587->supply = devm_regulator_get(dev, "power");132 if (IS_ERR(osd101t2587->supply))133 return PTR_ERR(osd101t2587->supply);134 135 drm_panel_init(&osd101t2587->base, &osd101t2587->dsi->dev,136 &osd101t2587_panel_funcs, DRM_MODE_CONNECTOR_DSI);137 138 ret = drm_panel_of_backlight(&osd101t2587->base);139 if (ret)140 return ret;141 142 drm_panel_add(&osd101t2587->base);143 144 return 0;145}146 147static int osd101t2587_panel_probe(struct mipi_dsi_device *dsi)148{149 struct osd101t2587_panel *osd101t2587;150 const struct of_device_id *id;151 int ret;152 153 id = of_match_node(osd101t2587_of_match, dsi->dev.of_node);154 if (!id)155 return -ENODEV;156 157 dsi->lanes = 4;158 dsi->format = MIPI_DSI_FMT_RGB888;159 dsi->mode_flags = MIPI_DSI_MODE_VIDEO |160 MIPI_DSI_MODE_VIDEO_BURST |161 MIPI_DSI_MODE_VIDEO_SYNC_PULSE |162 MIPI_DSI_MODE_NO_EOT_PACKET;163 164 osd101t2587 = devm_kzalloc(&dsi->dev, sizeof(*osd101t2587), GFP_KERNEL);165 if (!osd101t2587)166 return -ENOMEM;167 168 mipi_dsi_set_drvdata(dsi, osd101t2587);169 170 osd101t2587->dsi = dsi;171 osd101t2587->default_mode = id->data;172 173 ret = osd101t2587_panel_add(osd101t2587);174 if (ret < 0)175 return ret;176 177 ret = mipi_dsi_attach(dsi);178 if (ret)179 drm_panel_remove(&osd101t2587->base);180 181 return ret;182}183 184static void osd101t2587_panel_remove(struct mipi_dsi_device *dsi)185{186 struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);187 int ret;188 189 drm_panel_remove(&osd101t2587->base);190 191 ret = mipi_dsi_detach(dsi);192 if (ret < 0)193 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);194}195 196static struct mipi_dsi_driver osd101t2587_panel_driver = {197 .driver = {198 .name = "panel-osd-osd101t2587-53ts",199 .of_match_table = osd101t2587_of_match,200 },201 .probe = osd101t2587_panel_probe,202 .remove = osd101t2587_panel_remove,203};204module_mipi_dsi_driver(osd101t2587_panel_driver);205 206MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");207MODULE_DESCRIPTION("OSD101T2587-53TS DSI panel");208MODULE_LICENSE("GPL v2");209