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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/backlight.h>
11#include <linux/delay.h>
12#include <linux/gpio/consumer.h>
13#include <linux/module.h>
14#include <linux/of.h>
15#include <linux/regulator/consumer.h>
16
17#include <video/mipi_display.h>
18
19#include <drm/drm_crtc.h>
20#include <drm/drm_device.h>
21#include <drm/drm_mipi_dsi.h>
22#include <drm/drm_panel.h>
23
24struct sharp_nt_panel {
25 struct drm_panel base;
26 struct mipi_dsi_device *dsi;
27
28 struct backlight_device *backlight;
29 struct regulator *supply;
30 struct gpio_desc *reset_gpio;
31
32 bool prepared;
33 bool enabled;
34
35 const struct drm_display_mode *mode;
36};
37
38static inline struct sharp_nt_panel *to_sharp_nt_panel(struct drm_panel *panel)
39{
40 return container_of(panel, struct sharp_nt_panel, base);
41}
42
43static int sharp_nt_panel_init(struct sharp_nt_panel *sharp_nt)
44{
45 struct mipi_dsi_device *dsi = sharp_nt->dsi;
46 int ret;
47
48 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
49
50 ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
51 if (ret < 0)
52 return ret;
53
54 msleep(120);
55
56 /* Novatek two-lane operation */
57 ret = mipi_dsi_dcs_write(dsi, 0xae, (u8[]){ 0x03 }, 1);
58 if (ret < 0)
59 return ret;
60
61 /* Set both MCU and RGB I/F to 24bpp */
62 ret = mipi_dsi_dcs_set_pixel_format(dsi, MIPI_DCS_PIXEL_FMT_24BIT |
63 (MIPI_DCS_PIXEL_FMT_24BIT << 4));
64 if (ret < 0)
65 return ret;
66
67 return 0;
68}
69
70static int sharp_nt_panel_on(struct sharp_nt_panel *sharp_nt)
71{
72 struct mipi_dsi_device *dsi = sharp_nt->dsi;
73 int ret;
74
75 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
76
77 ret = mipi_dsi_dcs_set_display_on(dsi);
78 if (ret < 0)
79 return ret;
80
81 return 0;
82}
83
84static int sharp_nt_panel_off(struct sharp_nt_panel *sharp_nt)
85{
86 struct mipi_dsi_device *dsi = sharp_nt->dsi;
87 int ret;
88
89 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
90
91 ret = mipi_dsi_dcs_set_display_off(dsi);
92 if (ret < 0)
93 return ret;
94
95 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
96 if (ret < 0)
97 return ret;
98
99 return 0;
100}
101
102
103static int sharp_nt_panel_disable(struct drm_panel *panel)
104{
105 struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
106
107 if (!sharp_nt->enabled)
108 return 0;
109
110 backlight_disable(sharp_nt->backlight);
111
112 sharp_nt->enabled = false;
113
114 return 0;
115}
116
117static int sharp_nt_panel_unprepare(struct drm_panel *panel)
118{
119 struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
120 int ret;
121
122 if (!sharp_nt->prepared)
123 return 0;
124
125 ret = sharp_nt_panel_off(sharp_nt);
126 if (ret < 0) {
127 dev_err(panel->dev, "failed to set panel off: %d\n", ret);
128 return ret;
129 }
130
131 regulator_disable(sharp_nt->supply);
132 if (sharp_nt->reset_gpio)
133 gpiod_set_value(sharp_nt->reset_gpio, 0);
134
135 sharp_nt->prepared = false;
136
137 return 0;
138}
139
140static int sharp_nt_panel_prepare(struct drm_panel *panel)
141{
142 struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
143 int ret;
144
145 if (sharp_nt->prepared)
146 return 0;
147
148 ret = regulator_enable(sharp_nt->supply);
149 if (ret < 0)
150 return ret;
151
152 msleep(20);
153
154 if (sharp_nt->reset_gpio) {
155 gpiod_set_value(sharp_nt->reset_gpio, 1);
156 msleep(1);
157 gpiod_set_value(sharp_nt->reset_gpio, 0);
158 msleep(1);
159 gpiod_set_value(sharp_nt->reset_gpio, 1);
160 msleep(10);
161 }
162
163 ret = sharp_nt_panel_init(sharp_nt);
164 if (ret < 0) {
165 dev_err(panel->dev, "failed to init panel: %d\n", ret);
166 goto poweroff;
167 }
168
169 ret = sharp_nt_panel_on(sharp_nt);
170 if (ret < 0) {
171 dev_err(panel->dev, "failed to set panel on: %d\n", ret);
172 goto poweroff;
173 }
174
175 sharp_nt->prepared = true;
176
177 return 0;
178
179poweroff:
180 regulator_disable(sharp_nt->supply);
181 if (sharp_nt->reset_gpio)
182 gpiod_set_value(sharp_nt->reset_gpio, 0);
183 return ret;
184}
185
186static int sharp_nt_panel_enable(struct drm_panel *panel)
187{
188 struct sharp_nt_panel *sharp_nt = to_sharp_nt_panel(panel);
189
190 if (sharp_nt->enabled)
191 return 0;
192
193 backlight_enable(sharp_nt->backlight);
194
195 sharp_nt->enabled = true;
196
197 return 0;
198}
199
200static const struct drm_display_mode default_mode = {
201 .clock = 41118,
202 .hdisplay = 540,
203 .hsync_start = 540 + 48,
204 .hsync_end = 540 + 48 + 80,
205 .htotal = 540 + 48 + 80 + 32,
206 .vdisplay = 960,
207 .vsync_start = 960 + 3,
208 .vsync_end = 960 + 3 + 15,
209 .vtotal = 960 + 3 + 15 + 1,
210 .vrefresh = 60,
211};
212
213static int sharp_nt_panel_get_modes(struct drm_panel *panel)
214{
215 struct drm_display_mode *mode;
216
217 mode = drm_mode_duplicate(panel->drm, &default_mode);
218 if (!mode) {
219 dev_err(panel->drm->dev, "failed to add mode %ux%ux@%u\n",
220 default_mode.hdisplay, default_mode.vdisplay,
221 default_mode.vrefresh);
222 return -ENOMEM;
223 }
224
225 drm_mode_set_name(mode);
226
227 drm_mode_probed_add(panel->connector, mode);
228
229 panel->connector->display_info.width_mm = 54;
230 panel->connector->display_info.height_mm = 95;
231
232 return 1;
233}
234
235static const struct drm_panel_funcs sharp_nt_panel_funcs = {
236 .disable = sharp_nt_panel_disable,
237 .unprepare = sharp_nt_panel_unprepare,
238 .prepare = sharp_nt_panel_prepare,
239 .enable = sharp_nt_panel_enable,
240 .get_modes = sharp_nt_panel_get_modes,
241};
242
243static int sharp_nt_panel_add(struct sharp_nt_panel *sharp_nt)
244{
245 struct device *dev = &sharp_nt->dsi->dev;
246
247 sharp_nt->mode = &default_mode;
248
249 sharp_nt->supply = devm_regulator_get(dev, "avdd");
250 if (IS_ERR(sharp_nt->supply))
251 return PTR_ERR(sharp_nt->supply);
252
253 sharp_nt->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
254 if (IS_ERR(sharp_nt->reset_gpio)) {
255 dev_err(dev, "cannot get reset-gpios %ld\n",
256 PTR_ERR(sharp_nt->reset_gpio));
257 sharp_nt->reset_gpio = NULL;
258 } else {
259 gpiod_set_value(sharp_nt->reset_gpio, 0);
260 }
261
262 sharp_nt->backlight = devm_of_find_backlight(dev);
263
264 if (IS_ERR(sharp_nt->backlight))
265 return PTR_ERR(sharp_nt->backlight);
266
267 drm_panel_init(&sharp_nt->base);
268 sharp_nt->base.funcs = &sharp_nt_panel_funcs;
269 sharp_nt->base.dev = &sharp_nt->dsi->dev;
270
271 return drm_panel_add(&sharp_nt->base);
272}
273
274static void sharp_nt_panel_del(struct sharp_nt_panel *sharp_nt)
275{
276 if (sharp_nt->base.dev)
277 drm_panel_remove(&sharp_nt->base);
278}
279
280static int sharp_nt_panel_probe(struct mipi_dsi_device *dsi)
281{
282 struct sharp_nt_panel *sharp_nt;
283 int ret;
284
285 dsi->lanes = 2;
286 dsi->format = MIPI_DSI_FMT_RGB888;
287 dsi->mode_flags = MIPI_DSI_MODE_VIDEO |
288 MIPI_DSI_MODE_VIDEO_HSE |
289 MIPI_DSI_CLOCK_NON_CONTINUOUS |
290 MIPI_DSI_MODE_EOT_PACKET;
291
292 sharp_nt = devm_kzalloc(&dsi->dev, sizeof(*sharp_nt), GFP_KERNEL);
293 if (!sharp_nt)
294 return -ENOMEM;
295
296 mipi_dsi_set_drvdata(dsi, sharp_nt);
297
298 sharp_nt->dsi = dsi;
299
300 ret = sharp_nt_panel_add(sharp_nt);
301 if (ret < 0)
302 return ret;
303
304 return mipi_dsi_attach(dsi);
305}
306
307static int sharp_nt_panel_remove(struct mipi_dsi_device *dsi)
308{
309 struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi);
310 int ret;
311
312 ret = sharp_nt_panel_disable(&sharp_nt->base);
313 if (ret < 0)
314 dev_err(&dsi->dev, "failed to disable panel: %d\n", ret);
315
316 ret = mipi_dsi_detach(dsi);
317 if (ret < 0)
318 dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);
319
320 sharp_nt_panel_del(sharp_nt);
321
322 return 0;
323}
324
325static void sharp_nt_panel_shutdown(struct mipi_dsi_device *dsi)
326{
327 struct sharp_nt_panel *sharp_nt = mipi_dsi_get_drvdata(dsi);
328
329 sharp_nt_panel_disable(&sharp_nt->base);
330}
331
332static const struct of_device_id sharp_nt_of_match[] = {
333 { .compatible = "sharp,ls043t1le01-qhd", },
334 { }
335};
336MODULE_DEVICE_TABLE(of, sharp_nt_of_match);
337
338static struct mipi_dsi_driver sharp_nt_panel_driver = {
339 .driver = {
340 .name = "panel-sharp-ls043t1le01-qhd",
341 .of_match_table = sharp_nt_of_match,
342 },
343 .probe = sharp_nt_panel_probe,
344 .remove = sharp_nt_panel_remove,
345 .shutdown = sharp_nt_panel_shutdown,
346};
347module_mipi_dsi_driver(sharp_nt_panel_driver);
348
349MODULE_AUTHOR("Werner Johansson <werner.johansson@sonymobile.com>");
350MODULE_DESCRIPTION("Sharp LS043T1LE01 NT35565-based qHD (540x960) video mode panel driver");
351MODULE_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");