1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (c) 2020 Caleb Connolly <caleb@connolly.tech>
3 * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
4 * Copyright (c) 2020, The Linux Foundation. All rights reserved.
5 */
6
7 #include <linux/delay.h>
8 #include <linux/gpio/consumer.h>
9 #include <linux/module.h>
10 #include <linux/of.h>
11 #include <linux/regulator/consumer.h>
12 #include <linux/backlight.h>
13
14 #include <video/mipi_display.h>
15
16 #include <drm/drm_mipi_dsi.h>
17 #include <drm/drm_modes.h>
18 #include <drm/drm_panel.h>
19
20 struct sofef00_panel {
21 struct drm_panel panel;
22 struct mipi_dsi_device *dsi;
23 struct regulator *supply;
24 struct gpio_desc *reset_gpio;
25 const struct drm_display_mode *mode;
26 bool prepared;
27 };
28
29 static inline
to_sofef00_panel(struct drm_panel * panel)30 struct sofef00_panel *to_sofef00_panel(struct drm_panel *panel)
31 {
32 return container_of(panel, struct sofef00_panel, panel);
33 }
34
sofef00_panel_reset(struct sofef00_panel * ctx)35 static void sofef00_panel_reset(struct sofef00_panel *ctx)
36 {
37 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
38 usleep_range(5000, 6000);
39 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
40 usleep_range(2000, 3000);
41 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
42 usleep_range(12000, 13000);
43 }
44
sofef00_panel_on(struct sofef00_panel * ctx)45 static int sofef00_panel_on(struct sofef00_panel *ctx)
46 {
47 struct mipi_dsi_device *dsi = ctx->dsi;
48 struct device *dev = &dsi->dev;
49 int ret;
50
51 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
52
53 ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
54 if (ret < 0) {
55 dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
56 return ret;
57 }
58 usleep_range(10000, 11000);
59
60 mipi_dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
61
62 ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
63 if (ret < 0) {
64 dev_err(dev, "Failed to set tear on: %d\n", ret);
65 return ret;
66 }
67
68 mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
69 mipi_dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
70 mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x07);
71 mipi_dsi_dcs_write_seq(dsi, 0xb6, 0x12);
72 mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
73 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
74 mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
75
76 ret = mipi_dsi_dcs_set_display_on(dsi);
77 if (ret < 0) {
78 dev_err(dev, "Failed to set display on: %d\n", ret);
79 return ret;
80 }
81
82 return 0;
83 }
84
sofef00_panel_off(struct sofef00_panel * ctx)85 static int sofef00_panel_off(struct sofef00_panel *ctx)
86 {
87 struct mipi_dsi_device *dsi = ctx->dsi;
88 struct device *dev = &dsi->dev;
89 int ret;
90
91 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
92
93 ret = mipi_dsi_dcs_set_display_off(dsi);
94 if (ret < 0) {
95 dev_err(dev, "Failed to set display off: %d\n", ret);
96 return ret;
97 }
98 msleep(40);
99
100 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
101 if (ret < 0) {
102 dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
103 return ret;
104 }
105 msleep(160);
106
107 return 0;
108 }
109
sofef00_panel_prepare(struct drm_panel * panel)110 static int sofef00_panel_prepare(struct drm_panel *panel)
111 {
112 struct sofef00_panel *ctx = to_sofef00_panel(panel);
113 struct device *dev = &ctx->dsi->dev;
114 int ret;
115
116 if (ctx->prepared)
117 return 0;
118
119 ret = regulator_enable(ctx->supply);
120 if (ret < 0) {
121 dev_err(dev, "Failed to enable regulator: %d\n", ret);
122 return ret;
123 }
124
125 sofef00_panel_reset(ctx);
126
127 ret = sofef00_panel_on(ctx);
128 if (ret < 0) {
129 dev_err(dev, "Failed to initialize panel: %d\n", ret);
130 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
131 return ret;
132 }
133
134 ctx->prepared = true;
135 return 0;
136 }
137
sofef00_panel_unprepare(struct drm_panel * panel)138 static int sofef00_panel_unprepare(struct drm_panel *panel)
139 {
140 struct sofef00_panel *ctx = to_sofef00_panel(panel);
141 struct device *dev = &ctx->dsi->dev;
142 int ret;
143
144 if (!ctx->prepared)
145 return 0;
146
147 ret = sofef00_panel_off(ctx);
148 if (ret < 0)
149 dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
150
151 regulator_disable(ctx->supply);
152
153 ctx->prepared = false;
154 return 0;
155 }
156
157 static const struct drm_display_mode enchilada_panel_mode = {
158 .clock = (1080 + 112 + 16 + 36) * (2280 + 36 + 8 + 12) * 60 / 1000,
159 .hdisplay = 1080,
160 .hsync_start = 1080 + 112,
161 .hsync_end = 1080 + 112 + 16,
162 .htotal = 1080 + 112 + 16 + 36,
163 .vdisplay = 2280,
164 .vsync_start = 2280 + 36,
165 .vsync_end = 2280 + 36 + 8,
166 .vtotal = 2280 + 36 + 8 + 12,
167 .width_mm = 68,
168 .height_mm = 145,
169 };
170
171 static const struct drm_display_mode fajita_panel_mode = {
172 .clock = (1080 + 72 + 16 + 36) * (2340 + 32 + 4 + 18) * 60 / 1000,
173 .hdisplay = 1080,
174 .hsync_start = 1080 + 72,
175 .hsync_end = 1080 + 72 + 16,
176 .htotal = 1080 + 72 + 16 + 36,
177 .vdisplay = 2340,
178 .vsync_start = 2340 + 32,
179 .vsync_end = 2340 + 32 + 4,
180 .vtotal = 2340 + 32 + 4 + 18,
181 .width_mm = 68,
182 .height_mm = 145,
183 };
184
sofef00_panel_get_modes(struct drm_panel * panel,struct drm_connector * connector)185 static int sofef00_panel_get_modes(struct drm_panel *panel, struct drm_connector *connector)
186 {
187 struct drm_display_mode *mode;
188 struct sofef00_panel *ctx = to_sofef00_panel(panel);
189
190 mode = drm_mode_duplicate(connector->dev, ctx->mode);
191 if (!mode)
192 return -ENOMEM;
193
194 drm_mode_set_name(mode);
195
196 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
197 connector->display_info.width_mm = mode->width_mm;
198 connector->display_info.height_mm = mode->height_mm;
199 drm_mode_probed_add(connector, mode);
200
201 return 1;
202 }
203
204 static const struct drm_panel_funcs sofef00_panel_panel_funcs = {
205 .prepare = sofef00_panel_prepare,
206 .unprepare = sofef00_panel_unprepare,
207 .get_modes = sofef00_panel_get_modes,
208 };
209
sofef00_panel_bl_update_status(struct backlight_device * bl)210 static int sofef00_panel_bl_update_status(struct backlight_device *bl)
211 {
212 struct mipi_dsi_device *dsi = bl_get_data(bl);
213 int err;
214 u16 brightness = (u16)backlight_get_brightness(bl);
215
216 err = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
217 if (err < 0)
218 return err;
219
220 return 0;
221 }
222
223 static const struct backlight_ops sofef00_panel_bl_ops = {
224 .update_status = sofef00_panel_bl_update_status,
225 };
226
227 static struct backlight_device *
sofef00_create_backlight(struct mipi_dsi_device * dsi)228 sofef00_create_backlight(struct mipi_dsi_device *dsi)
229 {
230 struct device *dev = &dsi->dev;
231 const struct backlight_properties props = {
232 .type = BACKLIGHT_PLATFORM,
233 .brightness = 1023,
234 .max_brightness = 1023,
235 };
236
237 return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
238 &sofef00_panel_bl_ops, &props);
239 }
240
sofef00_panel_probe(struct mipi_dsi_device * dsi)241 static int sofef00_panel_probe(struct mipi_dsi_device *dsi)
242 {
243 struct device *dev = &dsi->dev;
244 struct sofef00_panel *ctx;
245 int ret;
246
247 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
248 if (!ctx)
249 return -ENOMEM;
250
251 ctx->mode = of_device_get_match_data(dev);
252
253 if (!ctx->mode) {
254 dev_err(dev, "Missing device mode\n");
255 return -ENODEV;
256 }
257
258 ctx->supply = devm_regulator_get(dev, "vddio");
259 if (IS_ERR(ctx->supply))
260 return dev_err_probe(dev, PTR_ERR(ctx->supply),
261 "Failed to get vddio regulator\n");
262
263 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
264 if (IS_ERR(ctx->reset_gpio))
265 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
266 "Failed to get reset-gpios\n");
267
268 ctx->dsi = dsi;
269 mipi_dsi_set_drvdata(dsi, ctx);
270
271 dsi->lanes = 4;
272 dsi->format = MIPI_DSI_FMT_RGB888;
273
274 drm_panel_init(&ctx->panel, dev, &sofef00_panel_panel_funcs,
275 DRM_MODE_CONNECTOR_DSI);
276
277 ctx->panel.backlight = sofef00_create_backlight(dsi);
278 if (IS_ERR(ctx->panel.backlight))
279 return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
280 "Failed to create backlight\n");
281
282 drm_panel_add(&ctx->panel);
283
284 ret = mipi_dsi_attach(dsi);
285 if (ret < 0) {
286 dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
287 drm_panel_remove(&ctx->panel);
288 return ret;
289 }
290
291 return 0;
292 }
293
sofef00_panel_remove(struct mipi_dsi_device * dsi)294 static void sofef00_panel_remove(struct mipi_dsi_device *dsi)
295 {
296 struct sofef00_panel *ctx = mipi_dsi_get_drvdata(dsi);
297 int ret;
298
299 ret = mipi_dsi_detach(dsi);
300 if (ret < 0)
301 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
302
303 drm_panel_remove(&ctx->panel);
304 }
305
306 static const struct of_device_id sofef00_panel_of_match[] = {
307 { // OnePlus 6 / enchilada
308 .compatible = "samsung,sofef00",
309 .data = &enchilada_panel_mode,
310 },
311 { // OnePlus 6T / fajita
312 .compatible = "samsung,s6e3fc2x01",
313 .data = &fajita_panel_mode,
314 },
315 { /* sentinel */ }
316 };
317 MODULE_DEVICE_TABLE(of, sofef00_panel_of_match);
318
319 static struct mipi_dsi_driver sofef00_panel_driver = {
320 .probe = sofef00_panel_probe,
321 .remove = sofef00_panel_remove,
322 .driver = {
323 .name = "panel-oneplus6",
324 .of_match_table = sofef00_panel_of_match,
325 },
326 };
327
328 module_mipi_dsi_driver(sofef00_panel_driver);
329
330 MODULE_AUTHOR("Caleb Connolly <caleb@connolly.tech>");
331 MODULE_DESCRIPTION("DRM driver for Samsung AMOLED DSI panels found in OnePlus 6/6T phones");
332 MODULE_LICENSE("GPL v2");
333