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

0001 // SPDX-License-Identifier: GPL-2.0
0002 /*
0003  *  Copyright (C) 2019 Texas Instruments Incorporated - https://www.ti.com
0004  *  Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
0005  */
0006
0007 #include <linux/module.h>
0008 #include <linux/of.h>
0009 #include <linux/regulator/consumer.h>
0010
0011 #include <drm/drm_crtc.h>
0012 #include <drm/drm_device.h>
0013 #include <drm/drm_mipi_dsi.h>
0014 #include <drm/drm_panel.h>
0015
0016 #include <video/mipi_display.h>
0017
0018 struct osd101t2587_panel {
0019     struct drm_panel base;
0020     struct mipi_dsi_device *dsi;
0021
0022     struct regulator *supply;
0023
0024     bool prepared;
0025     bool enabled;
0026
0027     const struct drm_display_mode *default_mode;
0028 };
0029
0030 static inline struct osd101t2587_panel *ti_osd_panel(struct drm_panel *panel)
0031 {
0032     return container_of(panel, struct osd101t2587_panel, base);
0033 }
0034
0035 static int osd101t2587_panel_disable(struct drm_panel *panel)
0036 {
0037     struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
0038     int ret;
0039
0040     if (!osd101t2587->enabled)
0041         return 0;
0042
0043     ret = mipi_dsi_shutdown_peripheral(osd101t2587->dsi);
0044
0045     osd101t2587->enabled = false;
0046
0047     return ret;
0048 }
0049
0050 static int osd101t2587_panel_unprepare(struct drm_panel *panel)
0051 {
0052     struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
0053
0054     if (!osd101t2587->prepared)
0055         return 0;
0056
0057     regulator_disable(osd101t2587->supply);
0058     osd101t2587->prepared = false;
0059
0060     return 0;
0061 }
0062
0063 static int osd101t2587_panel_prepare(struct drm_panel *panel)
0064 {
0065     struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
0066     int ret;
0067
0068     if (osd101t2587->prepared)
0069         return 0;
0070
0071     ret = regulator_enable(osd101t2587->supply);
0072     if (!ret)
0073         osd101t2587->prepared = true;
0074
0075     return ret;
0076 }
0077
0078 static int osd101t2587_panel_enable(struct drm_panel *panel)
0079 {
0080     struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
0081     int ret;
0082
0083     if (osd101t2587->enabled)
0084         return 0;
0085
0086     ret = mipi_dsi_turn_on_peripheral(osd101t2587->dsi);
0087     if (ret)
0088         return ret;
0089
0090     osd101t2587->enabled = true;
0091
0092     return ret;
0093 }
0094
0095 static const struct drm_display_mode default_mode_osd101t2587 = {
0096     .clock = 164400,
0097     .hdisplay = 1920,
0098     .hsync_start = 1920 + 152,
0099     .hsync_end = 1920 + 152 + 52,
0100     .htotal = 1920 + 152 + 52 + 20,
0101     .vdisplay = 1200,
0102     .vsync_start = 1200 + 24,
0103     .vsync_end = 1200 + 24 + 6,
0104     .vtotal = 1200 + 24 + 6 + 48,
0105     .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
0106 };
0107
0108 static int osd101t2587_panel_get_modes(struct drm_panel *panel,
0109                        struct drm_connector *connector)
0110 {
0111     struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
0112     struct drm_display_mode *mode;
0113
0114     mode = drm_mode_duplicate(connector->dev, osd101t2587->default_mode);
0115     if (!mode) {
0116         dev_err(panel->dev, "failed to add mode %ux%ux@%u\n",
0117             osd101t2587->default_mode->hdisplay,
0118             osd101t2587->default_mode->vdisplay,
0119             drm_mode_vrefresh(osd101t2587->default_mode));
0120         return -ENOMEM;
0121     }
0122
0123     drm_mode_set_name(mode);
0124
0125     drm_mode_probed_add(connector, mode);
0126
0127     connector->display_info.width_mm = 217;
0128     connector->display_info.height_mm = 136;
0129
0130     return 1;
0131 }
0132
0133 static const struct drm_panel_funcs osd101t2587_panel_funcs = {
0134     .disable = osd101t2587_panel_disable,
0135     .unprepare = osd101t2587_panel_unprepare,
0136     .prepare = osd101t2587_panel_prepare,
0137     .enable = osd101t2587_panel_enable,
0138     .get_modes = osd101t2587_panel_get_modes,
0139 };
0140
0141 static const struct of_device_id osd101t2587_of_match[] = {
0142     {
0143         .compatible = "osddisplays,osd101t2587-53ts",
0144         .data = &default_mode_osd101t2587,
0145     }, {
0146         /* sentinel */
0147     }
0148 };
0149 MODULE_DEVICE_TABLE(of, osd101t2587_of_match);
0150
0151 static int osd101t2587_panel_add(struct osd101t2587_panel *osd101t2587)
0152 {
0153     struct device *dev = &osd101t2587->dsi->dev;
0154     int ret;
0155
0156     osd101t2587->supply = devm_regulator_get(dev, "power");
0157     if (IS_ERR(osd101t2587->supply))
0158         return PTR_ERR(osd101t2587->supply);
0159
0160     drm_panel_init(&osd101t2587->base, &osd101t2587->dsi->dev,
0161                &osd101t2587_panel_funcs, DRM_MODE_CONNECTOR_DSI);
0162
0163     ret = drm_panel_of_backlight(&osd101t2587->base);
0164     if (ret)
0165         return ret;
0166
0167     drm_panel_add(&osd101t2587->base);
0168
0169     return 0;
0170 }
0171
0172 static int osd101t2587_panel_probe(struct mipi_dsi_device *dsi)
0173 {
0174     struct osd101t2587_panel *osd101t2587;
0175     const struct of_device_id *id;
0176     int ret;
0177
0178     id = of_match_node(osd101t2587_of_match, dsi->dev.of_node);
0179     if (!id)
0180         return -ENODEV;
0181
0182     dsi->lanes = 4;
0183     dsi->format = MIPI_DSI_FMT_RGB888;
0184     dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
0185               MIPI_DSI_MODE_VIDEO_BURST |
0186               MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
0187               MIPI_DSI_MODE_NO_EOT_PACKET;
0188
0189     osd101t2587 = devm_kzalloc(&dsi->dev, sizeof(*osd101t2587), GFP_KERNEL);
0190     if (!osd101t2587)
0191         return -ENOMEM;
0192
0193     mipi_dsi_set_drvdata(dsi, osd101t2587);
0194
0195     osd101t2587->dsi = dsi;
0196     osd101t2587->default_mode = id->data;
0197
0198     ret = osd101t2587_panel_add(osd101t2587);
0199     if (ret < 0)
0200         return ret;
0201
0202     ret = mipi_dsi_attach(dsi);
0203     if (ret)
0204         drm_panel_remove(&osd101t2587->base);
0205
0206     return ret;
0207 }
0208
0209 static int osd101t2587_panel_remove(struct mipi_dsi_device *dsi)
0210 {
0211     struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);
0212     int ret;
0213
0214     ret = drm_panel_disable(&osd101t2587->base);
0215     if (ret < 0)
0216         dev_warn(&dsi->dev, "failed to disable panel: %d\n", ret);
0217
0218     drm_panel_unprepare(&osd101t2587->base);
0219     drm_panel_remove(&osd101t2587->base);
0220
0221     ret = mipi_dsi_detach(dsi);
0222     if (ret < 0)
0223         dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
0224
0225     return ret;
0226 }
0227
0228 static void osd101t2587_panel_shutdown(struct mipi_dsi_device *dsi)
0229 {
0230     struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);
0231
0232     drm_panel_disable(&osd101t2587->base);
0233     drm_panel_unprepare(&osd101t2587->base);
0234 }
0235
0236 static struct mipi_dsi_driver osd101t2587_panel_driver = {
0237     .driver = {
0238         .name = "panel-osd-osd101t2587-53ts",
0239         .of_match_table = osd101t2587_of_match,
0240     },
0241     .probe = osd101t2587_panel_probe,
0242     .remove = osd101t2587_panel_remove,
0243     .shutdown = osd101t2587_panel_shutdown,
0244 };
0245 module_mipi_dsi_driver(osd101t2587_panel_driver);
0246
0247 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
0248 MODULE_DESCRIPTION("OSD101T2587-53TS DSI panel");
0249 MODULE_LICENSE("GPL v2");