treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / gpu / drm / panel / panel-osd-osd101t2587-53ts.c
blob3a0229d600958f037319bb9ab6fa46e1b60defee
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 */
7 #include <linux/module.h>
8 #include <linux/of.h>
9 #include <linux/regulator/consumer.h>
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>
16 #include <video/mipi_display.h>
18 struct osd101t2587_panel {
19 struct drm_panel base;
20 struct mipi_dsi_device *dsi;
22 struct regulator *supply;
24 bool prepared;
25 bool enabled;
27 const struct drm_display_mode *default_mode;
30 static inline struct osd101t2587_panel *ti_osd_panel(struct drm_panel *panel)
32 return container_of(panel, struct osd101t2587_panel, base);
35 static int osd101t2587_panel_disable(struct drm_panel *panel)
37 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
38 int ret;
40 if (!osd101t2587->enabled)
41 return 0;
43 ret = mipi_dsi_shutdown_peripheral(osd101t2587->dsi);
45 osd101t2587->enabled = false;
47 return ret;
50 static int osd101t2587_panel_unprepare(struct drm_panel *panel)
52 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
54 if (!osd101t2587->prepared)
55 return 0;
57 regulator_disable(osd101t2587->supply);
58 osd101t2587->prepared = false;
60 return 0;
63 static int osd101t2587_panel_prepare(struct drm_panel *panel)
65 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
66 int ret;
68 if (osd101t2587->prepared)
69 return 0;
71 ret = regulator_enable(osd101t2587->supply);
72 if (!ret)
73 osd101t2587->prepared = true;
75 return ret;
78 static int osd101t2587_panel_enable(struct drm_panel *panel)
80 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
81 int ret;
83 if (osd101t2587->enabled)
84 return 0;
86 ret = mipi_dsi_turn_on_peripheral(osd101t2587->dsi);
87 if (ret)
88 return ret;
90 osd101t2587->enabled = true;
92 return ret;
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 .vrefresh = 60,
106 .flags = DRM_MODE_FLAG_NHSYNC | DRM_MODE_FLAG_NVSYNC,
109 static int osd101t2587_panel_get_modes(struct drm_panel *panel,
110 struct drm_connector *connector)
112 struct osd101t2587_panel *osd101t2587 = ti_osd_panel(panel);
113 struct drm_display_mode *mode;
115 mode = drm_mode_duplicate(connector->dev, osd101t2587->default_mode);
116 if (!mode) {
117 dev_err(panel->dev, "failed to add mode %ux%ux@%u\n",
118 osd101t2587->default_mode->hdisplay,
119 osd101t2587->default_mode->vdisplay,
120 osd101t2587->default_mode->vrefresh);
121 return -ENOMEM;
124 drm_mode_set_name(mode);
126 drm_mode_probed_add(connector, mode);
128 connector->display_info.width_mm = 217;
129 connector->display_info.height_mm = 136;
131 return 1;
134 static const struct drm_panel_funcs osd101t2587_panel_funcs = {
135 .disable = osd101t2587_panel_disable,
136 .unprepare = osd101t2587_panel_unprepare,
137 .prepare = osd101t2587_panel_prepare,
138 .enable = osd101t2587_panel_enable,
139 .get_modes = osd101t2587_panel_get_modes,
142 static const struct of_device_id osd101t2587_of_match[] = {
144 .compatible = "osddisplays,osd101t2587-53ts",
145 .data = &default_mode_osd101t2587,
146 }, {
147 /* sentinel */
150 MODULE_DEVICE_TABLE(of, osd101t2587_of_match);
152 static int osd101t2587_panel_add(struct osd101t2587_panel *osd101t2587)
154 struct device *dev = &osd101t2587->dsi->dev;
155 int ret;
157 osd101t2587->supply = devm_regulator_get(dev, "power");
158 if (IS_ERR(osd101t2587->supply))
159 return PTR_ERR(osd101t2587->supply);
161 drm_panel_init(&osd101t2587->base, &osd101t2587->dsi->dev,
162 &osd101t2587_panel_funcs, DRM_MODE_CONNECTOR_DSI);
164 ret = drm_panel_of_backlight(&osd101t2587->base);
165 if (ret)
166 return ret;
168 return drm_panel_add(&osd101t2587->base);
171 static int osd101t2587_panel_probe(struct mipi_dsi_device *dsi)
173 struct osd101t2587_panel *osd101t2587;
174 const struct of_device_id *id;
175 int ret;
177 id = of_match_node(osd101t2587_of_match, dsi->dev.of_node);
178 if (!id)
179 return -ENODEV;
181 dsi->lanes = 4;
182 dsi->format = MIPI_DSI_FMT_RGB888;
183 dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
184 MIPI_DSI_MODE_VIDEO_BURST |
185 MIPI_DSI_MODE_VIDEO_SYNC_PULSE |
186 MIPI_DSI_MODE_EOT_PACKET;
188 osd101t2587 = devm_kzalloc(&dsi->dev, sizeof(*osd101t2587), GFP_KERNEL);
189 if (!osd101t2587)
190 return -ENOMEM;
192 mipi_dsi_set_drvdata(dsi, osd101t2587);
194 osd101t2587->dsi = dsi;
195 osd101t2587->default_mode = id->data;
197 ret = osd101t2587_panel_add(osd101t2587);
198 if (ret < 0)
199 return ret;
201 ret = mipi_dsi_attach(dsi);
202 if (ret)
203 drm_panel_remove(&osd101t2587->base);
205 return ret;
208 static int osd101t2587_panel_remove(struct mipi_dsi_device *dsi)
210 struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);
211 int ret;
213 ret = drm_panel_disable(&osd101t2587->base);
214 if (ret < 0)
215 dev_warn(&dsi->dev, "failed to disable panel: %d\n", ret);
217 drm_panel_unprepare(&osd101t2587->base);
218 drm_panel_remove(&osd101t2587->base);
220 ret = mipi_dsi_detach(dsi);
221 if (ret < 0)
222 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
224 return ret;
227 static void osd101t2587_panel_shutdown(struct mipi_dsi_device *dsi)
229 struct osd101t2587_panel *osd101t2587 = mipi_dsi_get_drvdata(dsi);
231 drm_panel_disable(&osd101t2587->base);
232 drm_panel_unprepare(&osd101t2587->base);
235 static struct mipi_dsi_driver osd101t2587_panel_driver = {
236 .driver = {
237 .name = "panel-osd-osd101t2587-53ts",
238 .of_match_table = osd101t2587_of_match,
240 .probe = osd101t2587_panel_probe,
241 .remove = osd101t2587_panel_remove,
242 .shutdown = osd101t2587_panel_shutdown,
244 module_mipi_dsi_driver(osd101t2587_panel_driver);
246 MODULE_AUTHOR("Peter Ujfalusi <peter.ujfalusi@ti.com>");
247 MODULE_DESCRIPTION("OSD101T2587-53TS DSI panel");
248 MODULE_LICENSE("GPL v2");