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 |
29 | struct sofef00_panel *to_sofef00_panel(struct drm_panel *panel) |
30 | { |
31 | return container_of(panel, struct sofef00_panel, panel); |
32 | } |
33 | |
34 | static void sofef00_panel_reset(struct sofef00_panel *ctx) |
35 | { |
36 | gpiod_set_value_cansleep(desc: ctx->reset_gpio, value: 0); |
37 | usleep_range(min: 5000, max: 6000); |
38 | gpiod_set_value_cansleep(desc: ctx->reset_gpio, value: 1); |
39 | usleep_range(min: 2000, max: 3000); |
40 | gpiod_set_value_cansleep(desc: ctx->reset_gpio, value: 0); |
41 | usleep_range(min: 12000, max: 13000); |
42 | } |
43 | |
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(min: 10000, max: 11000); |
58 | |
59 | mipi_dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a); |
60 | |
61 | ret = mipi_dsi_dcs_set_tear_on(dsi, mode: 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 | |
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(msecs: 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(msecs: 160); |
105 | |
106 | return 0; |
107 | } |
108 | |
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(regulator: 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(desc: ctx->reset_gpio, value: 1); |
127 | return ret; |
128 | } |
129 | |
130 | return 0; |
131 | } |
132 | |
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(regulator: 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 | |
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(dev: connector->dev, mode: 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 | |
201 | static int sofef00_panel_bl_update_status(struct backlight_device *bl) |
202 | { |
203 | struct mipi_dsi_device *dsi = bl_get_data(bl_dev: bl); |
204 | int err; |
205 | u16 brightness = (u16)backlight_get_brightness(bd: 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 * |
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, name: dev_name(dev), parent: dev, devdata: dsi, |
229 | ops: &sofef00_panel_bl_ops, props: &props); |
230 | } |
231 | |
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, size: 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, id: "vddio" ); |
250 | if (IS_ERR(ptr: ctx->supply)) |
251 | return dev_err_probe(dev, err: PTR_ERR(ptr: ctx->supply), |
252 | fmt: "Failed to get vddio regulator\n" ); |
253 | |
254 | ctx->reset_gpio = devm_gpiod_get(dev, con_id: "reset" , flags: GPIOD_OUT_HIGH); |
255 | if (IS_ERR(ptr: ctx->reset_gpio)) |
256 | return dev_err_probe(dev, err: PTR_ERR(ptr: ctx->reset_gpio), |
257 | fmt: "Failed to get reset-gpios\n" ); |
258 | |
259 | ctx->dsi = dsi; |
260 | mipi_dsi_set_drvdata(dsi, data: ctx); |
261 | |
262 | dsi->lanes = 4; |
263 | dsi->format = MIPI_DSI_FMT_RGB888; |
264 | |
265 | drm_panel_init(panel: &ctx->panel, dev, funcs: &sofef00_panel_panel_funcs, |
266 | DRM_MODE_CONNECTOR_DSI); |
267 | |
268 | ctx->panel.backlight = sofef00_create_backlight(dsi); |
269 | if (IS_ERR(ptr: ctx->panel.backlight)) |
270 | return dev_err_probe(dev, err: PTR_ERR(ptr: ctx->panel.backlight), |
271 | fmt: "Failed to create backlight\n" ); |
272 | |
273 | drm_panel_add(panel: &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(panel: &ctx->panel); |
279 | return ret; |
280 | } |
281 | |
282 | return 0; |
283 | } |
284 | |
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(panel: &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 | |