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