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1/*
2 * Copyright (C) 2015 Red Hat
3 * Copyright (C) 2015 Sony Mobile Communications Inc.
4 * Author: Werner Johansson <werner.johansson@sonymobile.com>
5 *
6 * Based on AUO panel driver by Rob Clark <robdclark@gmail.com>
7 *
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 as published by
10 * the Free Software Foundation.
11 *
12 * This program is distributed in the hope that it will be useful, but WITHOUT
13 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
14 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
15 * more details.
16 *
17 * You should have received a copy of the GNU General Public License along with
18 * this program. If not, see <http://www.gnu.org/licenses/>.
19 */
20
21#include <linux/backlight.h>
22#include <linux/gpio/consumer.h>
23#include <linux/module.h>
24#include <linux/of.h>
25#include <linux/regulator/consumer.h>
26
27#include <drm/drmP.h>
28#include <drm/drm_crtc.h>
29#include <drm/drm_mipi_dsi.h>
30#include <drm/drm_panel.h>
31
32#include <video/mipi_display.h>
33
34struct sharp_nt_panel {
35 struct drm_panel base;
36 struct mipi_dsi_device *dsi;
37
38 struct backlight_device *backlight;
39 struct regulator *supply;
40 struct gpio_desc *reset_gpio;
41
42 bool prepared;
43 bool enabled;
44
45 const struct drm_display_mode *mode;
46};
47
48static inline struct sharp_nt_panel *to_sharp_nt_panel(struct drm_panel *panel)
49{
50 return container_of(panel, struct sharp_nt_panel, base);
51}
52
53static int sharp_nt_panel_init(struct sharp_nt_panel *sharp_nt)
54{
55 struct mipi_dsi_device *dsi = sharp_nt->dsi;
56 int ret;
57
58 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
59
60 ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
61 if (ret < 0)
62 return ret;
63
64 msleep(120);
65
66 /* Novatek two-lane operation */
67 ret = mipi_dsi_dcs_write(dsi, 0xae, (u8[]){ 0x03 }, 1);
68 if (ret < 0)
69 return ret;
70
71 /* Set both MCU and RGB I/F to 24bpp */
72 ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT |
73 (MIPI_DCS_PIXEL_FMT_24BIT << 4));
74 if (ret < 0)
75 return ret;
76
77 return 0;
78}
79
80static int sharp_nt_panel_on(struct sharp_nt_panel *sharp_nt)
81{
82 struct mipi_dsi_device *dsi = sharp_nt->dsi;
83 int ret;
84
85 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
86
87 ret = mipi_dsi_dcs_set_display_on(dsi);
88 if (ret < 0)
89 return ret;
90
91 return 0;
92}
93
94static int sharp_nt_panel_off(struct sharp_nt_panel *sharp_nt)
95{
96 struct mipi_dsi_device *dsi = sharp_nt->dsi;
97 int ret;
98
99 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
100
101 ret = mipi_dsi_dcs_set_display_off(dsi);
102 if (ret < 0)
103 return ret;
104
105 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
106 if (ret < 0)
107 return ret;
108
109 return 0;
110}
111
112
113static int sharp_nt_panel_disable(struct drm_panel *panel)
114{
115 struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
116
117 if (!sharp_nt->enabled)
118 return 0;
119
120 if (sharp_nt->backlight) {
121 sharp_nt->backlight->props.power = FB_BLANK_POWERDOWN;
122 backlight_update_status(sharp_nt->backlight);
123 }
124
125 sharp_nt->enabled = false;
126
127 return 0;
128}
129
130static int sharp_nt_panel_unprepare(struct drm_panel *panel)
131{
132 struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
133 int ret;
134
135 if (!sharp_nt->prepared)
136 return 0;
137
138 ret = sharp_nt_panel_off(sharp_nt);
139 if (ret < 0) {
140 dev_err(panel->dev, "failed to set panel off: %d\n", ret);
141 return ret;
142 }
143
144 regulator_disable(sharp_nt->supply);
145 if (sharp_nt->reset_gpio)
146 gpiod_set_value(sharp_nt->reset_gpio, 0);
147
148 sharp_nt->prepared = false;
149
150 return 0;
151}
152
153static int sharp_nt_panel_prepare(struct drm_panel *panel)
154{
155 struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
156 int ret;
157
158 if (sharp_nt->prepared)
159 return 0;
160
161 ret = regulator_enable(sharp_nt->supply);
162 if (ret < 0)
163 return ret;
164
165 msleep(20);
166
167 if (sharp_nt->reset_gpio) {
168 gpiod_set_value(sharp_nt->reset_gpio, 1);
169 msleep(1);
170 gpiod_set_value(sharp_nt->reset_gpio, 0);
171 msleep(1);
172 gpiod_set_value(sharp_nt->reset_gpio, 1);
173 msleep(10);
174 }
175
176 ret = sharp_nt_panel_init(sharp_nt);
177 if (ret < 0) {
178 dev_err(panel->dev, "failed to init panel: %d\n", ret);
179 goto poweroff;
180 }
181
182 ret = sharp_nt_panel_on(sharp_nt);
183 if (ret < 0) {
184 dev_err(panel->dev, "failed to set panel on: %d\n", ret);
185 goto poweroff;
186 }
187
188 sharp_nt->prepared = true;
189
190 return 0;
191
192poweroff:
193 regulator_disable(sharp_nt->supply);
194 if (sharp_nt->reset_gpio)
195 gpiod_set_value(sharp_nt->reset_gpio, 0);
196 return ret;
197}
198
199static int sharp_nt_panel_enable(struct drm_panel *panel)
200{
201 struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
202
203 if (sharp_nt->enabled)
204 return 0;
205
206 if (sharp_nt->backlight) {
207 sharp_nt->backlight->props.power = FB_BLANK_UNBLANK;
208 backlight_update_status(sharp_nt->backlight);
209 }
210
211 sharp_nt->enabled = true;
212
213 return 0;
214}
215
216static const struct drm_display_mode default_mode = {
217 .clock = 41118,
218 .hdisplay = 540,
219 .hsync_start = 540 + 48,
220 .hsync_end = 540 + 48 + 80,
221 .htotal = 540 + 48 + 80 + 32,
222 .vdisplay = 960,
223 .vsync_start = 960 + 3,
224 .vsync_end = 960 + 3 + 15,
225 .vtotal = 960 + 3 + 15 + 1,
226 .vrefresh = 60,
227};
228
229static int sharp_nt_panel_get_modes(struct drm_panel *panel)
230{
231 struct drm_display_mode *mode;
232
233 mode = drm_mode_duplicate(panel->drm, &default_mode);
234 if (!mode) {
235 dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n",
236 default_mode.hdisplay, default_mode.vdisplay,
237 default_mode.vrefresh);
238 return -ENOMEM;
239 }
240
241 drm_mode_set_name(mode);
242
243 drm_mode_probed_add(panel->connector, mode);
244
245 panel->connector->display_info.width_mm = 54;
246 panel->connector->display_info.height_mm = 95;
247
248 return 1;
249}
250
251static const struct drm_panel_funcs sharp_nt_panel_funcs = {
252 .disable = sharp_nt_panel_disable,
253 .unprepare = sharp_nt_panel_unprepare,
254 .prepare = sharp_nt_panel_prepare,
255 .enable = sharp_nt_panel_enable,
256 .get_modes = sharp_nt_panel_get_modes,
257};
258
259static int sharp_nt_panel_add(struct sharp_nt_panel *sharp_nt)
260{
261 struct device *dev = &sharp_nt->dsi->dev;
262 struct device_node *np;
263 int ret;
264
265 sharp_nt->mode = &default_mode;
266
267 sharp_nt->supply = devm_regulator_get(dev, "avdd");
268 if (IS_ERR(sharp_nt->supply))
269 return PTR_ERR(sharp_nt->supply);
270
271 sharp_nt->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
272 if (IS_ERR(sharp_nt->reset_gpio)) {
273 dev_err(dev, "cannot get reset-gpios %ld\n",
274 PTR_ERR(sharp_nt->reset_gpio));
275 sharp_nt->reset_gpio = NULL;
276 } else {
277 gpiod_set_value(sharp_nt->reset_gpio, 0);
278 }
279
280 np = of_parse_phandle(dev->of_node, "backlight", 0);
281 if (np) {
282 sharp_nt->backlight = of_find_backlight_by_node(np);
283 of_node_put(np);
284
285 if (!sharp_nt->backlight)
286 return -EPROBE_DEFER;
287 }
288
289 drm_panel_init(&sharp_nt->base);
290 sharp_nt->base.funcs = &sharp_nt_panel_funcs;
291 sharp_nt->base.dev = &sharp_nt->dsi->dev;
292
293 ret = drm_panel_add(&sharp_nt->base);
294 if (ret < 0)
295 goto put_backlight;
296
297 return 0;
298
299put_backlight:
300 if (sharp_nt->backlight)
301 put_device(&sharp_nt->backlight->dev);
302
303 return ret;
304}
305
306static void sharp_nt_panel_del(struct sharp_nt_panel *sharp_nt)
307{
308 if (sharp_nt->base.dev)
309 drm_panel_remove(&sharp_nt->base);
310
311 if (sharp_nt->backlight)
312 put_device(&sharp_nt->backlight->dev);
313}
314
315static int sharp_nt_panel_probe(struct mipi_dsi_device *dsi)
316{
317 struct sharp_nt_panel *sharp_nt;
318 int ret;
319
320 dsi->lanes = 2;
321 dsi->format = MIPI_DSI_FMT_RGB888;
322 dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
323 MIPI_DSI_MODE_VIDEO_HSE |
324 MIPI_DSI_CLOCK_NON_CONTINUOUS |
325 MIPI_DSI_MODE_EOT_PACKET;
326
327 sharp_nt = devm_kzalloc(&dsi->dev, sizeof(*sharp_nt), GFP_KERNEL);
328 if (!sharp_nt)
329 return -ENOMEM;
330
331 mipi_dsi_set_drvdata(dsi, sharp_nt);
332
333 sharp_nt->dsi = dsi;
334
335 ret = sharp_nt_panel_add(sharp_nt);
336 if (ret < 0)
337 return ret;
338
339 return mipi_dsi_attach(dsi);
340}
341
342static int sharp_nt_panel_remove(struct mipi_dsi_device *dsi)
343{
344 struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi);
345 int ret;
346
347 ret = sharp_nt_panel_disable(&sharp_nt->base);
348 if (ret < 0)
349 dev_err(&dsi->dev, "failed to disable panel: %d\n", ret);
350
351 ret = mipi_dsi_detach(dsi);
352 if (ret < 0)
353 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
354
355 drm_panel_detach(&sharp_nt->base);
356 sharp_nt_panel_del(sharp_nt);
357
358 return 0;
359}
360
361static void sharp_nt_panel_shutdown(struct mipi_dsi_device *dsi)
362{
363 struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi);
364
365 sharp_nt_panel_disable(&sharp_nt->base);
366}
367
368static const struct of_device_id sharp_nt_of_match[] = {
369 { .compatible = "sharp,ls043t1le01-qhd", },
370 { }
371};
372MODULE_DEVICE_TABLE(of, sharp_nt_of_match);
373
374static struct mipi_dsi_driver sharp_nt_panel_driver = {
375 .driver = {
376 .name = "panel-sharp-ls043t1le01-qhd",
377 .of_match_table = sharp_nt_of_match,
378 },
379 .probe = sharp_nt_panel_probe,
380 .remove = sharp_nt_panel_remove,
381 .shutdown = sharp_nt_panel_shutdown,
382};
383module_mipi_dsi_driver(sharp_nt_panel_driver);
384
385MODULE_AUTHOR("Werner Johansson <werner.johansson@sonymobile.com>");
386MODULE_DESCRIPTION("Sharp LS043T1LE01 NT35565-based qHD (540x960) video mode panel driver");
387MODULE_LICENSE("GPL v2");
1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (C) 2015 Red Hat
4 * Copyright (C) 2015 Sony Mobile Communications Inc.
5 * Author: Werner Johansson <werner.johansson@sonymobile.com>
6 *
7 * Based on AUO panel driver by Rob Clark <robdclark@gmail.com>
8 */
9
10#include <linux/delay.h>
11#include <linux/gpio/consumer.h>
12#include <linux/module.h>
13#include <linux/of.h>
14#include <linux/regulator/consumer.h>
15
16#include <video/mipi_display.h>
17
18#include <drm/drm_crtc.h>
19#include <drm/drm_device.h>
20#include <drm/drm_mipi_dsi.h>
21#include <drm/drm_panel.h>
22
23struct sharp_nt_panel {
24 struct drm_panel base;
25 struct mipi_dsi_device *dsi;
26
27 struct regulator *supply;
28 struct gpio_desc *reset_gpio;
29
30 bool prepared;
31 bool enabled;
32
33 const struct drm_display_mode *mode;
34};
35
36static inline struct sharp_nt_panel *to_sharp_nt_panel(struct drm_panel *panel)
37{
38 return container_of(panel, struct sharp_nt_panel, base);
39}
40
41static int sharp_nt_panel_init(struct sharp_nt_panel *sharp_nt)
42{
43 struct mipi_dsi_device *dsi = sharp_nt->dsi;
44 int ret;
45
46 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
47
48 ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
49 if (ret < 0)
50 return ret;
51
52 msleep(120);
53
54 /* Novatek two-lane operation */
55 ret = mipi_dsi_dcs_write(dsi, 0xae, (u8[]){ 0x03 }, 1);
56 if (ret < 0)
57 return ret;
58
59 /* Set both MCU and RGB I/F to 24bpp */
60 ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT |
61 (MIPI_DCS_PIXEL_FMT_24BIT << 4));
62 if (ret < 0)
63 return ret;
64
65 return 0;
66}
67
68static int sharp_nt_panel_on(struct sharp_nt_panel *sharp_nt)
69{
70 struct mipi_dsi_device *dsi = sharp_nt->dsi;
71 int ret;
72
73 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
74
75 ret = mipi_dsi_dcs_set_display_on(dsi);
76 if (ret < 0)
77 return ret;
78
79 return 0;
80}
81
82static int sharp_nt_panel_off(struct sharp_nt_panel *sharp_nt)
83{
84 struct mipi_dsi_device *dsi = sharp_nt->dsi;
85 int ret;
86
87 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
88
89 ret = mipi_dsi_dcs_set_display_off(dsi);
90 if (ret < 0)
91 return ret;
92
93 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
94 if (ret < 0)
95 return ret;
96
97 return 0;
98}
99
100
101static int sharp_nt_panel_disable(struct drm_panel *panel)
102{
103 struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
104
105 if (!sharp_nt->enabled)
106 return 0;
107
108 sharp_nt->enabled = false;
109
110 return 0;
111}
112
113static int sharp_nt_panel_unprepare(struct drm_panel *panel)
114{
115 struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
116 int ret;
117
118 if (!sharp_nt->prepared)
119 return 0;
120
121 ret = sharp_nt_panel_off(sharp_nt);
122 if (ret < 0) {
123 dev_err(panel->dev, "failed to set panel off: %d\n", ret);
124 return ret;
125 }
126
127 regulator_disable(sharp_nt->supply);
128 if (sharp_nt->reset_gpio)
129 gpiod_set_value(sharp_nt->reset_gpio, 0);
130
131 sharp_nt->prepared = false;
132
133 return 0;
134}
135
136static int sharp_nt_panel_prepare(struct drm_panel *panel)
137{
138 struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
139 int ret;
140
141 if (sharp_nt->prepared)
142 return 0;
143
144 ret = regulator_enable(sharp_nt->supply);
145 if (ret < 0)
146 return ret;
147
148 msleep(20);
149
150 if (sharp_nt->reset_gpio) {
151 gpiod_set_value(sharp_nt->reset_gpio, 1);
152 msleep(1);
153 gpiod_set_value(sharp_nt->reset_gpio, 0);
154 msleep(1);
155 gpiod_set_value(sharp_nt->reset_gpio, 1);
156 msleep(10);
157 }
158
159 ret = sharp_nt_panel_init(sharp_nt);
160 if (ret < 0) {
161 dev_err(panel->dev, "failed to init panel: %d\n", ret);
162 goto poweroff;
163 }
164
165 ret = sharp_nt_panel_on(sharp_nt);
166 if (ret < 0) {
167 dev_err(panel->dev, "failed to set panel on: %d\n", ret);
168 goto poweroff;
169 }
170
171 sharp_nt->prepared = true;
172
173 return 0;
174
175poweroff:
176 regulator_disable(sharp_nt->supply);
177 if (sharp_nt->reset_gpio)
178 gpiod_set_value(sharp_nt->reset_gpio, 0);
179 return ret;
180}
181
182static int sharp_nt_panel_enable(struct drm_panel *panel)
183{
184 struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
185
186 if (sharp_nt->enabled)
187 return 0;
188
189 sharp_nt->enabled = true;
190
191 return 0;
192}
193
194static const struct drm_display_mode default_mode = {
195 .clock = 41118,
196 .hdisplay = 540,
197 .hsync_start = 540 + 48,
198 .hsync_end = 540 + 48 + 80,
199 .htotal = 540 + 48 + 80 + 32,
200 .vdisplay = 960,
201 .vsync_start = 960 + 3,
202 .vsync_end = 960 + 3 + 15,
203 .vtotal = 960 + 3 + 15 + 1,
204};
205
206static int sharp_nt_panel_get_modes(struct drm_panel *panel,
207 struct drm_connector *connector)
208{
209 struct drm_display_mode *mode;
210
211 mode = drm_mode_duplicate(connector->dev, &default_mode);
212 if (!mode) {
213 dev_err(panel->dev, "failed to add mode %ux%u@%u\n",
214 default_mode.hdisplay, default_mode.vdisplay,
215 drm_mode_vrefresh(&default_mode));
216 return -ENOMEM;
217 }
218
219 drm_mode_set_name(mode);
220
221 drm_mode_probed_add(connector, mode);
222
223 connector->display_info.width_mm = 54;
224 connector->display_info.height_mm = 95;
225
226 return 1;
227}
228
229static const struct drm_panel_funcs sharp_nt_panel_funcs = {
230 .disable = sharp_nt_panel_disable,
231 .unprepare = sharp_nt_panel_unprepare,
232 .prepare = sharp_nt_panel_prepare,
233 .enable = sharp_nt_panel_enable,
234 .get_modes = sharp_nt_panel_get_modes,
235};
236
237static int sharp_nt_panel_add(struct sharp_nt_panel *sharp_nt)
238{
239 struct device *dev = &sharp_nt->dsi->dev;
240 int ret;
241
242 sharp_nt->mode = &default_mode;
243
244 sharp_nt->supply = devm_regulator_get(dev, "avdd");
245 if (IS_ERR(sharp_nt->supply))
246 return PTR_ERR(sharp_nt->supply);
247
248 sharp_nt->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
249 if (IS_ERR(sharp_nt->reset_gpio)) {
250 dev_err(dev, "cannot get reset-gpios %ld\n",
251 PTR_ERR(sharp_nt->reset_gpio));
252 sharp_nt->reset_gpio = NULL;
253 } else {
254 gpiod_set_value(sharp_nt->reset_gpio, 0);
255 }
256
257 drm_panel_init(&sharp_nt->base, &sharp_nt->dsi->dev,
258 &sharp_nt_panel_funcs, DRM_MODE_CONNECTOR_DSI);
259
260 ret = drm_panel_of_backlight(&sharp_nt->base);
261 if (ret)
262 return ret;
263
264 return drm_panel_add(&sharp_nt->base);
265}
266
267static void sharp_nt_panel_del(struct sharp_nt_panel *sharp_nt)
268{
269 if (sharp_nt->base.dev)
270 drm_panel_remove(&sharp_nt->base);
271}
272
273static int sharp_nt_panel_probe(struct mipi_dsi_device *dsi)
274{
275 struct sharp_nt_panel *sharp_nt;
276 int ret;
277
278 dsi->lanes = 2;
279 dsi->format = MIPI_DSI_FMT_RGB888;
280 dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
281 MIPI_DSI_MODE_VIDEO_HSE |
282 MIPI_DSI_CLOCK_NON_CONTINUOUS |
283 MIPI_DSI_MODE_EOT_PACKET;
284
285 sharp_nt = devm_kzalloc(&dsi->dev, sizeof(*sharp_nt), GFP_KERNEL);
286 if (!sharp_nt)
287 return -ENOMEM;
288
289 mipi_dsi_set_drvdata(dsi, sharp_nt);
290
291 sharp_nt->dsi = dsi;
292
293 ret = sharp_nt_panel_add(sharp_nt);
294 if (ret < 0)
295 return ret;
296
297 return mipi_dsi_attach(dsi);
298}
299
300static int sharp_nt_panel_remove(struct mipi_dsi_device *dsi)
301{
302 struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi);
303 int ret;
304
305 ret = drm_panel_disable(&sharp_nt->base);
306 if (ret < 0)
307 dev_err(&dsi->dev, "failed to disable panel: %d\n", ret);
308
309 ret = mipi_dsi_detach(dsi);
310 if (ret < 0)
311 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
312
313 sharp_nt_panel_del(sharp_nt);
314
315 return 0;
316}
317
318static void sharp_nt_panel_shutdown(struct mipi_dsi_device *dsi)
319{
320 struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi);
321
322 drm_panel_disable(&sharp_nt->base);
323}
324
325static const struct of_device_id sharp_nt_of_match[] = {
326 { .compatible = "sharp,ls043t1le01-qhd", },
327 { }
328};
329MODULE_DEVICE_TABLE(of, sharp_nt_of_match);
330
331static struct mipi_dsi_driver sharp_nt_panel_driver = {
332 .driver = {
333 .name = "panel-sharp-ls043t1le01-qhd",
334 .of_match_table = sharp_nt_of_match,
335 },
336 .probe = sharp_nt_panel_probe,
337 .remove = sharp_nt_panel_remove,
338 .shutdown = sharp_nt_panel_shutdown,
339};
340module_mipi_dsi_driver(sharp_nt_panel_driver);
341
342MODULE_AUTHOR("Werner Johansson <werner.johansson@sonymobile.com>");
343MODULE_DESCRIPTION("Sharp LS043T1LE01 NT35565-based qHD (540x960) video mode panel driver");
344MODULE_LICENSE("GPL v2");