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 const struct drm_display_mode *default_mode; 25 }; 26 27 static inline struct osd101t2587_panel *ti_osd_panel(struct drm_panel *panel) 28 { 29 return container_of(panel, struct osd101t2587_panel, base); 30 } 31 32 static 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 42 static 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 51 static 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 58 static 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 70 static 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 83 static 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 } 107 108 static 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 }; 115 116 static const struct of_device_id osd101t2587_of_match[] = { 117 { 118 .compatible = "osddisplays,osd101t2587-53ts", 119 .data = &default_mode_osd101t2587, 120 }, { 121 /* sentinel */ 122 } 123 }; 124 MODULE_DEVICE_TABLE(of, osd101t2587_of_match); 125 126 static 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 } 146 147 static 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 } 183 184 static 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 } 195 196 static 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 }; 204 module_mipi_dsi_driver(osd101t2587_panel_driver); 205 206 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>"); 207 MODULE_DESCRIPTION("OSD101T2587-53TS DSI panel"); 208 MODULE_LICENSE("GPL v2"); 209