drivers/gpu/drm/panel/panel-osd-osd101t2587-53ts.c

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