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1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2014 NVIDIA Corporation
4 */
5
6#include <linux/delay.h>
7#include <linux/gpio/consumer.h>
8#include <linux/module.h>
9#include <linux/of.h>
10#include <linux/regulator/consumer.h>
11
12#include <video/mipi_display.h>
13
14#include <drm/drm_crtc.h>
15#include <drm/drm_device.h>
16#include <drm/drm_mipi_dsi.h>
17#include <drm/drm_panel.h>
18
19struct sharp_panel {
20 struct drm_panel base;
21 /* the datasheet refers to them as DSI-LINK1 and DSI-LINK2 */
22 struct mipi_dsi_device *link1;
23 struct mipi_dsi_device *link2;
24
25 struct regulator *supply;
26
27 const struct drm_display_mode *mode;
28};
29
30static inline struct sharp_panel *to_sharp_panel(struct drm_panel *panel)
31{
32 return container_of(panel, struct sharp_panel, base);
33}
34
35static void sharp_wait_frames(struct sharp_panel *sharp, unsigned int frames)
36{
37 unsigned int refresh = drm_mode_vrefresh(sharp->mode);
38
39 if (WARN_ON(frames > refresh))
40 return;
41
42 msleep(1000 / (refresh / frames));
43}
44
45static int sharp_panel_write(struct sharp_panel *sharp, u16 offset, u8 value)
46{
47 u8 payload[3] = { offset >> 8, offset & 0xff, value };
48 struct mipi_dsi_device *dsi = sharp->link1;
49 ssize_t err;
50
51 err = mipi_dsi_generic_write(dsi, payload, sizeof(payload));
52 if (err < 0) {
53 dev_err(&dsi->dev, "failed to write %02x to %04x: %zd\n",
54 value, offset, err);
55 return err;
56 }
57
58 err = mipi_dsi_dcs_nop(dsi);
59 if (err < 0) {
60 dev_err(&dsi->dev, "failed to send DCS nop: %zd\n", err);
61 return err;
62 }
63
64 usleep_range(10, 20);
65
66 return 0;
67}
68
69static __maybe_unused int sharp_panel_read(struct sharp_panel *sharp,
70 u16 offset, u8 *value)
71{
72 ssize_t err;
73
74 cpu_to_be16s(&offset);
75
76 err = mipi_dsi_generic_read(sharp->link1, &offset, sizeof(offset),
77 value, sizeof(*value));
78 if (err < 0)
79 dev_err(&sharp->link1->dev, "failed to read from %04x: %zd\n",
80 offset, err);
81
82 return err;
83}
84
85static int sharp_panel_unprepare(struct drm_panel *panel)
86{
87 struct sharp_panel *sharp = to_sharp_panel(panel);
88 int err;
89
90 sharp_wait_frames(sharp, 4);
91
92 err = mipi_dsi_dcs_set_display_off(sharp->link1);
93 if (err < 0)
94 dev_err(panel->dev, "failed to set display off: %d\n", err);
95
96 err = mipi_dsi_dcs_enter_sleep_mode(sharp->link1);
97 if (err < 0)
98 dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);
99
100 msleep(120);
101
102 regulator_disable(sharp->supply);
103
104 return 0;
105}
106
107static int sharp_setup_symmetrical_split(struct mipi_dsi_device *left,
108 struct mipi_dsi_device *right,
109 const struct drm_display_mode *mode)
110{
111 int err;
112
113 err = mipi_dsi_dcs_set_column_address(left, 0, mode->hdisplay / 2 - 1);
114 if (err < 0) {
115 dev_err(&left->dev, "failed to set column address: %d\n", err);
116 return err;
117 }
118
119 err = mipi_dsi_dcs_set_page_address(left, 0, mode->vdisplay - 1);
120 if (err < 0) {
121 dev_err(&left->dev, "failed to set page address: %d\n", err);
122 return err;
123 }
124
125 err = mipi_dsi_dcs_set_column_address(right, mode->hdisplay / 2,
126 mode->hdisplay - 1);
127 if (err < 0) {
128 dev_err(&right->dev, "failed to set column address: %d\n", err);
129 return err;
130 }
131
132 err = mipi_dsi_dcs_set_page_address(right, 0, mode->vdisplay - 1);
133 if (err < 0) {
134 dev_err(&right->dev, "failed to set page address: %d\n", err);
135 return err;
136 }
137
138 return 0;
139}
140
141static int sharp_panel_prepare(struct drm_panel *panel)
142{
143 struct sharp_panel *sharp = to_sharp_panel(panel);
144 u8 format = MIPI_DCS_PIXEL_FMT_24BIT;
145 int err;
146
147 err = regulator_enable(sharp->supply);
148 if (err < 0)
149 return err;
150
151 /*
152 * According to the datasheet, the panel needs around 10 ms to fully
153 * power up. At least another 120 ms is required before exiting sleep
154 * mode to make sure the panel is ready. Throw in another 20 ms for
155 * good measure.
156 */
157 msleep(150);
158
159 err = mipi_dsi_dcs_exit_sleep_mode(sharp->link1);
160 if (err < 0) {
161 dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
162 goto poweroff;
163 }
164
165 /*
166 * The MIPI DCS specification mandates this delay only between the
167 * exit_sleep_mode and enter_sleep_mode commands, so it isn't strictly
168 * necessary here.
169 */
170 /*
171 msleep(120);
172 */
173
174 /* set left-right mode */
175 err = sharp_panel_write(sharp, 0x1000, 0x2a);
176 if (err < 0) {
177 dev_err(panel->dev, "failed to set left-right mode: %d\n", err);
178 goto poweroff;
179 }
180
181 /* enable command mode */
182 err = sharp_panel_write(sharp, 0x1001, 0x01);
183 if (err < 0) {
184 dev_err(panel->dev, "failed to enable command mode: %d\n", err);
185 goto poweroff;
186 }
187
188 err = mipi_dsi_dcs_set_pixel_format(sharp->link1, format);
189 if (err < 0) {
190 dev_err(panel->dev, "failed to set pixel format: %d\n", err);
191 goto poweroff;
192 }
193
194 /*
195 * TODO: The device supports both left-right and even-odd split
196 * configurations, but this driver currently supports only the left-
197 * right split. To support a different mode a mechanism needs to be
198 * put in place to communicate the configuration back to the DSI host
199 * controller.
200 */
201 err = sharp_setup_symmetrical_split(sharp->link1, sharp->link2,
202 sharp->mode);
203 if (err < 0) {
204 dev_err(panel->dev, "failed to set up symmetrical split: %d\n",
205 err);
206 goto poweroff;
207 }
208
209 err = mipi_dsi_dcs_set_display_on(sharp->link1);
210 if (err < 0) {
211 dev_err(panel->dev, "failed to set display on: %d\n", err);
212 goto poweroff;
213 }
214
215 /* wait for 6 frames before continuing */
216 sharp_wait_frames(sharp, 6);
217
218 return 0;
219
220poweroff:
221 regulator_disable(sharp->supply);
222 return err;
223}
224
225static const struct drm_display_mode default_mode = {
226 .clock = 278000,
227 .hdisplay = 2560,
228 .hsync_start = 2560 + 128,
229 .hsync_end = 2560 + 128 + 64,
230 .htotal = 2560 + 128 + 64 + 64,
231 .vdisplay = 1600,
232 .vsync_start = 1600 + 4,
233 .vsync_end = 1600 + 4 + 8,
234 .vtotal = 1600 + 4 + 8 + 32,
235};
236
237static int sharp_panel_get_modes(struct drm_panel *panel,
238 struct drm_connector *connector)
239{
240 struct drm_display_mode *mode;
241
242 mode = drm_mode_duplicate(connector->dev, &default_mode);
243 if (!mode) {
244 dev_err(panel->dev, "failed to add mode %ux%ux@%u\n",
245 default_mode.hdisplay, default_mode.vdisplay,
246 drm_mode_vrefresh(&default_mode));
247 return -ENOMEM;
248 }
249
250 drm_mode_set_name(mode);
251
252 drm_mode_probed_add(connector, mode);
253
254 connector->display_info.width_mm = 217;
255 connector->display_info.height_mm = 136;
256
257 return 1;
258}
259
260static const struct drm_panel_funcs sharp_panel_funcs = {
261 .unprepare = sharp_panel_unprepare,
262 .prepare = sharp_panel_prepare,
263 .get_modes = sharp_panel_get_modes,
264};
265
266static const struct of_device_id sharp_of_match[] = {
267 { .compatible = "sharp,lq101r1sx01", },
268 { }
269};
270MODULE_DEVICE_TABLE(of, sharp_of_match);
271
272static int sharp_panel_add(struct sharp_panel *sharp)
273{
274 int ret;
275
276 sharp->mode = &default_mode;
277
278 sharp->supply = devm_regulator_get(&sharp->link1->dev, "power");
279 if (IS_ERR(sharp->supply))
280 return PTR_ERR(sharp->supply);
281
282 drm_panel_init(&sharp->base, &sharp->link1->dev, &sharp_panel_funcs,
283 DRM_MODE_CONNECTOR_DSI);
284
285 ret = drm_panel_of_backlight(&sharp->base);
286 if (ret)
287 return ret;
288
289 drm_panel_add(&sharp->base);
290
291 return 0;
292}
293
294static void sharp_panel_del(struct sharp_panel *sharp)
295{
296 if (sharp->base.dev)
297 drm_panel_remove(&sharp->base);
298
299 if (sharp->link2)
300 put_device(&sharp->link2->dev);
301}
302
303static int sharp_panel_probe(struct mipi_dsi_device *dsi)
304{
305 struct mipi_dsi_device *secondary = NULL;
306 struct sharp_panel *sharp;
307 struct device_node *np;
308 int err;
309
310 dsi->lanes = 4;
311 dsi->format = MIPI_DSI_FMT_RGB888;
312 dsi->mode_flags = MIPI_DSI_MODE_LPM;
313
314 /* Find DSI-LINK1 */
315 np = of_parse_phandle(dsi->dev.of_node, "link2", 0);
316 if (np) {
317 secondary = of_find_mipi_dsi_device_by_node(np);
318 of_node_put(np);
319
320 if (!secondary)
321 return -EPROBE_DEFER;
322 }
323
324 /* register a panel for only the DSI-LINK1 interface */
325 if (secondary) {
326 sharp = devm_kzalloc(&dsi->dev, sizeof(*sharp), GFP_KERNEL);
327 if (!sharp) {
328 put_device(&secondary->dev);
329 return -ENOMEM;
330 }
331
332 mipi_dsi_set_drvdata(dsi, sharp);
333
334 sharp->link2 = secondary;
335 sharp->link1 = dsi;
336
337 err = sharp_panel_add(sharp);
338 if (err < 0) {
339 put_device(&secondary->dev);
340 return err;
341 }
342 }
343
344 err = mipi_dsi_attach(dsi);
345 if (err < 0) {
346 if (secondary)
347 sharp_panel_del(sharp);
348
349 return err;
350 }
351
352 return 0;
353}
354
355static void sharp_panel_remove(struct mipi_dsi_device *dsi)
356{
357 struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);
358 int err;
359
360 err = mipi_dsi_detach(dsi);
361 if (err < 0)
362 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
363
364 /* only detach from host for the DSI-LINK2 interface */
365 if (sharp)
366 sharp_panel_del(sharp);
367}
368
369static struct mipi_dsi_driver sharp_panel_driver = {
370 .driver = {
371 .name = "panel-sharp-lq101r1sx01",
372 .of_match_table = sharp_of_match,
373 },
374 .probe = sharp_panel_probe,
375 .remove = sharp_panel_remove,
376};
377module_mipi_dsi_driver(sharp_panel_driver);
378
379MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
380MODULE_DESCRIPTION("Sharp LQ101R1SX01 panel driver");
381MODULE_LICENSE("GPL v2");
1/*
2 * Copyright (C) 2014 NVIDIA Corporation
3 *
4 * This program is free software; you can redistribute it and/or modify
5 * it under the terms of the GNU General Public License version 2 as
6 * published by the Free Software Foundation.
7 */
8
9#include <linux/backlight.h>
10#include <linux/gpio/consumer.h>
11#include <linux/module.h>
12#include <linux/of.h>
13#include <linux/regulator/consumer.h>
14
15#include <drm/drmP.h>
16#include <drm/drm_crtc.h>
17#include <drm/drm_mipi_dsi.h>
18#include <drm/drm_panel.h>
19
20#include <video/mipi_display.h>
21
22struct sharp_panel {
23 struct drm_panel base;
24 /* the datasheet refers to them as DSI-LINK1 and DSI-LINK2 */
25 struct mipi_dsi_device *link1;
26 struct mipi_dsi_device *link2;
27
28 struct backlight_device *backlight;
29 struct regulator *supply;
30
31 bool prepared;
32 bool enabled;
33
34 const struct drm_display_mode *mode;
35};
36
37static inline struct sharp_panel *to_sharp_panel(struct drm_panel *panel)
38{
39 return container_of(panel, struct sharp_panel, base);
40}
41
42static void sharp_wait_frames(struct sharp_panel *sharp, unsigned int frames)
43{
44 unsigned int refresh = drm_mode_vrefresh(sharp->mode);
45
46 if (WARN_ON(frames > refresh))
47 return;
48
49 msleep(1000 / (refresh / frames));
50}
51
52static int sharp_panel_write(struct sharp_panel *sharp, u16 offset, u8 value)
53{
54 u8 payload[3] = { offset >> 8, offset & 0xff, value };
55 struct mipi_dsi_device *dsi = sharp->link1;
56 ssize_t err;
57
58 err = mipi_dsi_generic_write(dsi, payload, sizeof(payload));
59 if (err < 0) {
60 dev_err(&dsi->dev, "failed to write %02x to %04x: %zd\n",
61 value, offset, err);
62 return err;
63 }
64
65 err = mipi_dsi_dcs_nop(dsi);
66 if (err < 0) {
67 dev_err(&dsi->dev, "failed to send DCS nop: %zd\n", err);
68 return err;
69 }
70
71 usleep_range(10, 20);
72
73 return 0;
74}
75
76static __maybe_unused int sharp_panel_read(struct sharp_panel *sharp,
77 u16 offset, u8 *value)
78{
79 ssize_t err;
80
81 cpu_to_be16s(&offset);
82
83 err = mipi_dsi_generic_read(sharp->link1, &offset, sizeof(offset),
84 value, sizeof(*value));
85 if (err < 0)
86 dev_err(&sharp->link1->dev, "failed to read from %04x: %zd\n",
87 offset, err);
88
89 return err;
90}
91
92static int sharp_panel_disable(struct drm_panel *panel)
93{
94 struct sharp_panel *sharp = to_sharp_panel(panel);
95
96 if (!sharp->enabled)
97 return 0;
98
99 backlight_disable(sharp->backlight);
100
101 sharp->enabled = false;
102
103 return 0;
104}
105
106static int sharp_panel_unprepare(struct drm_panel *panel)
107{
108 struct sharp_panel *sharp = to_sharp_panel(panel);
109 int err;
110
111 if (!sharp->prepared)
112 return 0;
113
114 sharp_wait_frames(sharp, 4);
115
116 err = mipi_dsi_dcs_set_display_off(sharp->link1);
117 if (err < 0)
118 dev_err(panel->dev, "failed to set display off: %d\n", err);
119
120 err = mipi_dsi_dcs_enter_sleep_mode(sharp->link1);
121 if (err < 0)
122 dev_err(panel->dev, "failed to enter sleep mode: %d\n", err);
123
124 msleep(120);
125
126 regulator_disable(sharp->supply);
127
128 sharp->prepared = false;
129
130 return 0;
131}
132
133static int sharp_setup_symmetrical_split(struct mipi_dsi_device *left,
134 struct mipi_dsi_device *right,
135 const struct drm_display_mode *mode)
136{
137 int err;
138
139 err = mipi_dsi_dcs_set_column_address(left, 0, mode->hdisplay / 2 - 1);
140 if (err < 0) {
141 dev_err(&left->dev, "failed to set column address: %d\n", err);
142 return err;
143 }
144
145 err = mipi_dsi_dcs_set_page_address(left, 0, mode->vdisplay - 1);
146 if (err < 0) {
147 dev_err(&left->dev, "failed to set page address: %d\n", err);
148 return err;
149 }
150
151 err = mipi_dsi_dcs_set_column_address(right, mode->hdisplay / 2,
152 mode->hdisplay - 1);
153 if (err < 0) {
154 dev_err(&right->dev, "failed to set column address: %d\n", err);
155 return err;
156 }
157
158 err = mipi_dsi_dcs_set_page_address(right, 0, mode->vdisplay - 1);
159 if (err < 0) {
160 dev_err(&right->dev, "failed to set page address: %d\n", err);
161 return err;
162 }
163
164 return 0;
165}
166
167static int sharp_panel_prepare(struct drm_panel *panel)
168{
169 struct sharp_panel *sharp = to_sharp_panel(panel);
170 u8 format = MIPI_DCS_PIXEL_FMT_24BIT;
171 int err;
172
173 if (sharp->prepared)
174 return 0;
175
176 err = regulator_enable(sharp->supply);
177 if (err < 0)
178 return err;
179
180 /*
181 * According to the datasheet, the panel needs around 10 ms to fully
182 * power up. At least another 120 ms is required before exiting sleep
183 * mode to make sure the panel is ready. Throw in another 20 ms for
184 * good measure.
185 */
186 msleep(150);
187
188 err = mipi_dsi_dcs_exit_sleep_mode(sharp->link1);
189 if (err < 0) {
190 dev_err(panel->dev, "failed to exit sleep mode: %d\n", err);
191 goto poweroff;
192 }
193
194 /*
195 * The MIPI DCS specification mandates this delay only between the
196 * exit_sleep_mode and enter_sleep_mode commands, so it isn't strictly
197 * necessary here.
198 */
199 /*
200 msleep(120);
201 */
202
203 /* set left-right mode */
204 err = sharp_panel_write(sharp, 0x1000, 0x2a);
205 if (err < 0) {
206 dev_err(panel->dev, "failed to set left-right mode: %d\n", err);
207 goto poweroff;
208 }
209
210 /* enable command mode */
211 err = sharp_panel_write(sharp, 0x1001, 0x01);
212 if (err < 0) {
213 dev_err(panel->dev, "failed to enable command mode: %d\n", err);
214 goto poweroff;
215 }
216
217 err = mipi_dsi_dcs_set_pixel_format(sharp->link1, format);
218 if (err < 0) {
219 dev_err(panel->dev, "failed to set pixel format: %d\n", err);
220 goto poweroff;
221 }
222
223 /*
224 * TODO: The device supports both left-right and even-odd split
225 * configurations, but this driver currently supports only the left-
226 * right split. To support a different mode a mechanism needs to be
227 * put in place to communicate the configuration back to the DSI host
228 * controller.
229 */
230 err = sharp_setup_symmetrical_split(sharp->link1, sharp->link2,
231 sharp->mode);
232 if (err < 0) {
233 dev_err(panel->dev, "failed to set up symmetrical split: %d\n",
234 err);
235 goto poweroff;
236 }
237
238 err = mipi_dsi_dcs_set_display_on(sharp->link1);
239 if (err < 0) {
240 dev_err(panel->dev, "failed to set display on: %d\n", err);
241 goto poweroff;
242 }
243
244 sharp->prepared = true;
245
246 /* wait for 6 frames before continuing */
247 sharp_wait_frames(sharp, 6);
248
249 return 0;
250
251poweroff:
252 regulator_disable(sharp->supply);
253 return err;
254}
255
256static int sharp_panel_enable(struct drm_panel *panel)
257{
258 struct sharp_panel *sharp = to_sharp_panel(panel);
259
260 if (sharp->enabled)
261 return 0;
262
263 backlight_enable(sharp->backlight);
264
265 sharp->enabled = true;
266
267 return 0;
268}
269
270static const struct drm_display_mode default_mode = {
271 .clock = 278000,
272 .hdisplay = 2560,
273 .hsync_start = 2560 + 128,
274 .hsync_end = 2560 + 128 + 64,
275 .htotal = 2560 + 128 + 64 + 64,
276 .vdisplay = 1600,
277 .vsync_start = 1600 + 4,
278 .vsync_end = 1600 + 4 + 8,
279 .vtotal = 1600 + 4 + 8 + 32,
280 .vrefresh = 60,
281};
282
283static int sharp_panel_get_modes(struct drm_panel *panel)
284{
285 struct drm_display_mode *mode;
286
287 mode = drm_mode_duplicate(panel->drm, &default_mode);
288 if (!mode) {
289 dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n",
290 default_mode.hdisplay, default_mode.vdisplay,
291 default_mode.vrefresh);
292 return -ENOMEM;
293 }
294
295 drm_mode_set_name(mode);
296
297 drm_mode_probed_add(panel->connector, mode);
298
299 panel->connector->display_info.width_mm = 217;
300 panel->connector->display_info.height_mm = 136;
301
302 return 1;
303}
304
305static const struct drm_panel_funcs sharp_panel_funcs = {
306 .disable = sharp_panel_disable,
307 .unprepare = sharp_panel_unprepare,
308 .prepare = sharp_panel_prepare,
309 .enable = sharp_panel_enable,
310 .get_modes = sharp_panel_get_modes,
311};
312
313static const struct of_device_id sharp_of_match[] = {
314 { .compatible = "sharp,lq101r1sx01", },
315 { }
316};
317MODULE_DEVICE_TABLE(of, sharp_of_match);
318
319static int sharp_panel_add(struct sharp_panel *sharp)
320{
321 struct device *dev = &sharp->link1->dev;
322
323 sharp->mode = &default_mode;
324
325 sharp->supply = devm_regulator_get(&sharp->link1->dev, "power");
326 if (IS_ERR(sharp->supply))
327 return PTR_ERR(sharp->supply);
328
329 sharp->backlight = devm_of_find_backlight(dev);
330
331 if (IS_ERR(sharp->backlight))
332 return PTR_ERR(sharp->backlight);
333
334 drm_panel_init(&sharp->base);
335 sharp->base.funcs = &sharp_panel_funcs;
336 sharp->base.dev = &sharp->link1->dev;
337
338 return drm_panel_add(&sharp->base);
339}
340
341static void sharp_panel_del(struct sharp_panel *sharp)
342{
343 if (sharp->base.dev)
344 drm_panel_remove(&sharp->base);
345
346 if (sharp->link2)
347 put_device(&sharp->link2->dev);
348}
349
350static int sharp_panel_probe(struct mipi_dsi_device *dsi)
351{
352 struct mipi_dsi_device *secondary = NULL;
353 struct sharp_panel *sharp;
354 struct device_node *np;
355 int err;
356
357 dsi->lanes = 4;
358 dsi->format = MIPI_DSI_FMT_RGB888;
359 dsi->mode_flags = MIPI_DSI_MODE_LPM;
360
361 /* Find DSI-LINK1 */
362 np = of_parse_phandle(dsi->dev.of_node, "link2", 0);
363 if (np) {
364 secondary = of_find_mipi_dsi_device_by_node(np);
365 of_node_put(np);
366
367 if (!secondary)
368 return -EPROBE_DEFER;
369 }
370
371 /* register a panel for only the DSI-LINK1 interface */
372 if (secondary) {
373 sharp = devm_kzalloc(&dsi->dev, sizeof(*sharp), GFP_KERNEL);
374 if (!sharp) {
375 put_device(&secondary->dev);
376 return -ENOMEM;
377 }
378
379 mipi_dsi_set_drvdata(dsi, sharp);
380
381 sharp->link2 = secondary;
382 sharp->link1 = dsi;
383
384 err = sharp_panel_add(sharp);
385 if (err < 0) {
386 put_device(&secondary->dev);
387 return err;
388 }
389 }
390
391 err = mipi_dsi_attach(dsi);
392 if (err < 0) {
393 if (secondary)
394 sharp_panel_del(sharp);
395
396 return err;
397 }
398
399 return 0;
400}
401
402static int sharp_panel_remove(struct mipi_dsi_device *dsi)
403{
404 struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);
405 int err;
406
407 /* only detach from host for the DSI-LINK2 interface */
408 if (!sharp) {
409 mipi_dsi_detach(dsi);
410 return 0;
411 }
412
413 err = sharp_panel_disable(&sharp->base);
414 if (err < 0)
415 dev_err(&dsi->dev, "failed to disable panel: %d\n", err);
416
417 err = mipi_dsi_detach(dsi);
418 if (err < 0)
419 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", err);
420
421 drm_panel_detach(&sharp->base);
422 sharp_panel_del(sharp);
423
424 return 0;
425}
426
427static void sharp_panel_shutdown(struct mipi_dsi_device *dsi)
428{
429 struct sharp_panel *sharp = mipi_dsi_get_drvdata(dsi);
430
431 /* nothing to do for DSI-LINK2 */
432 if (!sharp)
433 return;
434
435 sharp_panel_disable(&sharp->base);
436}
437
438static struct mipi_dsi_driver sharp_panel_driver = {
439 .driver = {
440 .name = "panel-sharp-lq101r1sx01",
441 .of_match_table = sharp_of_match,
442 },
443 .probe = sharp_panel_probe,
444 .remove = sharp_panel_remove,
445 .shutdown = sharp_panel_shutdown,
446};
447module_mipi_dsi_driver(sharp_panel_driver);
448
449MODULE_AUTHOR("Thierry Reding <treding@nvidia.com>");
450MODULE_DESCRIPTION("Sharp LQ101R1SX01 panel driver");
451MODULE_LICENSE("GPL v2");