1 // SPDX-License-Identifier: GPL-2.0 2 /* 3 * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com 4 * Author: Peter Ujfalusi <peter.ujfalusi@ti.com> 5 */ 6 7 #include <linux/backlight.h> 8 #include <linux/module.h> 9 #include <linux/of.h> 10 #include <linux/regulator/consumer.h> 11 12 #include <drm/drm_crtc.h> 13 #include <drm/drm_device.h> 14 #include <drm/drm_mipi_dsi.h> 15 #include <drm/drm_panel.h> 16 17 #include <video/mipi_display.h> 18 19 struct osd101t2587_panel { 20 struct drm_panel base; 21 struct mipi_dsi_device *dsi; 22 23 struct backlight_device *backlight; 24 struct regulator *supply; 25 26 bool prepared; 27 bool enabled; 28 29 const struct drm_display_mode *default_mode; 30 }; 31 32 static inline struct osd101t2587_panel *ti_osd_panel(struct drm_panel *panel) 33 { 34 return container_of(panel, struct osd101t2587_panel, base); 35 } 36 37 static int osd101t2587_panel_disable(struct drm_panel *panel) 38 { 39 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel); 40 int ret; 41 42 if (!osd101t2587->enabled) 43 return 0; 44 45 backlight_disable(osd101t2587->backlight); 46 47 ret = mipi_dsi_shutdown_peripheral(osd101t2587->dsi); 48 49 osd101t2587->enabled = false; 50 51 return ret; 52 } 53 54 static int osd101t2587_panel_unprepare(struct drm_panel *panel) 55 { 56 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel); 57 58 if (!osd101t2587->prepared) 59 return 0; 60 61 regulator_disable(osd101t2587->supply); 62 osd101t2587->prepared = false; 63 64 return 0; 65 } 66 67 static int osd101t2587_panel_prepare(struct drm_panel *panel) 68 { 69 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel); 70 int ret; 71 72 if (osd101t2587->prepared) 73 return 0; 74 75 ret = regulator_enable(osd101t2587->supply); 76 if (!ret) 77 osd101t2587->prepared = true; 78 79 return ret; 80 } 81 82 static int osd101t2587_panel_enable(struct drm_panel *panel) 83 { 84 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel); 85 int ret; 86 87 if (osd101t2587->enabled) 88 return 0; 89 90 ret = mipi_dsi_turn_on_peripheral(osd101t2587->dsi); 91 if (ret) 92 return ret; 93 94 backlight_enable(osd101t2587->backlight); 95 96 osd101t2587->enabled = true; 97 98 return ret; 99 } 100 101 static const struct drm_display_mode default_mode_osd101t2587 = { 102 .clock = 164400, 103 .hdisplay = 1920, 104 .hsync_start = 1920 + 152, 105 .hsync_end = 1920 + 152 + 52, 106 .htotal = 1920 + 152 + 52 + 20, 107 .vdisplay = 1200, 108 .vsync_start = 1200 + 24, 109 .vsync_end = 1200 + 24 + 6, 110 .vtotal = 1200 + 24 + 6 + 48, 111 .vrefresh = 60, 112 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC, 113 }; 114 115 static int osd101t2587_panel_get_modes(struct drm_panel *panel) 116 { 117 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel); 118 struct drm_display_mode *mode; 119 120 mode = drm_mode_duplicate(panel->drm, osd101t2587->default_mode); 121 if (!mode) { 122 dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n", 123 osd101t2587->default_mode->hdisplay, 124 osd101t2587->default_mode->vdisplay, 125 osd101t2587->default_mode->vrefresh); 126 return -ENOMEM; 127 } 128 129 drm_mode_set_name(mode); 130 131 drm_mode_probed_add(panel->connector, mode); 132 133 panel->connector->display_info.width_mm = 217; 134 panel->connector->display_info.height_mm = 136; 135 136 return 1; 137 } 138 139 static const struct drm_panel_funcs osd101t2587_panel_funcs = { 140 .disable = osd101t2587_panel_disable, 141 .unprepare = osd101t2587_panel_unprepare, 142 .prepare = osd101t2587_panel_prepare, 143 .enable = osd101t2587_panel_enable, 144 .get_modes = osd101t2587_panel_get_modes, 145 }; 146 147 static const struct of_device_id osd101t2587_of_match[] = { 148 { 149 .compatible = "osddisplays,osd101t2587-53ts", 150 .data = &default_mode_osd101t2587, 151 }, { 152 /* sentinel */ 153 } 154 }; 155 MODULE_DEVICE_TABLE(of, osd101t2587_of_match); 156 157 static int osd101t2587_panel_add(struct osd101t2587_panel *osd101t2587) 158 { 159 struct device *dev = &osd101t2587->dsi->dev; 160 161 osd101t2587->supply = devm_regulator_get(dev, "power"); 162 if (IS_ERR(osd101t2587->supply)) 163 return PTR_ERR(osd101t2587->supply); 164 165 osd101t2587->backlight = devm_of_find_backlight(dev); 166 if (IS_ERR(osd101t2587->backlight)) 167 return PTR_ERR(osd101t2587->backlight); 168 169 drm_panel_init(&osd101t2587->base, &osd101t2587->dsi->dev, 170 &osd101t2587_panel_funcs, DRM_MODE_CONNECTOR_DSI); 171 172 return drm_panel_add(&osd101t2587->base); 173 } 174 175 static int osd101t2587_panel_probe(struct mipi_dsi_device *dsi) 176 { 177 struct osd101t2587_panel *osd101t2587; 178 const struct of_device_id *id; 179 int ret; 180 181 id = of_match_node(osd101t2587_of_match, dsi->dev.of_node); 182 if (!id) 183 return -ENODEV; 184 185 dsi->lanes = 4; 186 dsi->format = MIPI_DSI_FMT_RGB888; 187 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | 188 MIPI_DSI_MODE_VIDEO_BURST | 189 MIPI_DSI_MODE_VIDEO_SYNC_PULSE | 190 MIPI_DSI_MODE_EOT_PACKET; 191 192 osd101t2587 = devm_kzalloc(&dsi->dev, sizeof(*osd101t2587), GFP_KERNEL); 193 if (!osd101t2587) 194 return -ENOMEM; 195 196 mipi_dsi_set_drvdata(dsi, osd101t2587); 197 198 osd101t2587->dsi = dsi; 199 osd101t2587->default_mode = id->data; 200 201 ret = osd101t2587_panel_add(osd101t2587); 202 if (ret < 0) 203 return ret; 204 205 ret = mipi_dsi_attach(dsi); 206 if (ret) 207 drm_panel_remove(&osd101t2587->base); 208 209 return ret; 210 } 211 212 static int osd101t2587_panel_remove(struct mipi_dsi_device *dsi) 213 { 214 struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi); 215 int ret; 216 217 ret = osd101t2587_panel_disable(&osd101t2587->base); 218 if (ret < 0) 219 dev_warn(&dsi->dev, "failed to disable panel: %d\n", ret); 220 221 osd101t2587_panel_unprepare(&osd101t2587->base); 222 223 drm_panel_remove(&osd101t2587->base); 224 225 ret = mipi_dsi_detach(dsi); 226 if (ret < 0) 227 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret); 228 229 return ret; 230 } 231 232 static void osd101t2587_panel_shutdown(struct mipi_dsi_device *dsi) 233 { 234 struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi); 235 236 osd101t2587_panel_disable(&osd101t2587->base); 237 osd101t2587_panel_unprepare(&osd101t2587->base); 238 } 239 240 static struct mipi_dsi_driver osd101t2587_panel_driver = { 241 .driver = { 242 .name = "panel-osd-osd101t2587-53ts", 243 .of_match_table = osd101t2587_of_match, 244 }, 245 .probe = osd101t2587_panel_probe, 246 .remove = osd101t2587_panel_remove, 247 .shutdown = osd101t2587_panel_shutdown, 248 }; 249 module_mipi_dsi_driver(osd101t2587_panel_driver); 250 251 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>"); 252 MODULE_DESCRIPTION("OSD101T2587-53TS DSI panel"); 253 MODULE_LICENSE("GPL v2"); 254