1
2
3
4
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
13#include <video/mipi_display.h>
14
15#include <drm/drm_mipi_dsi.h>
16#include <drm/drm_modes.h>
17#include <drm/drm_panel.h>
18
19struct sharp_ls060 {
20 struct drm_panel panel;
21 struct mipi_dsi_device *dsi;
22 struct regulator *vddi_supply;
23 struct regulator *vddh_supply;
24 struct regulator *avdd_supply;
25 struct regulator *avee_supply;
26 struct gpio_desc *reset_gpio;
27 bool prepared;
28};
29
30static inline struct sharp_ls060 *to_sharp_ls060(struct drm_panel *panel)
31{
32 return container_of(panel, struct sharp_ls060, panel);
33}
34
35#define dsi_dcs_write_seq(dsi, seq...) ({ \
36 static const u8 d[] = { seq }; \
37 \
38 mipi_dsi_dcs_write_buffer(dsi, d, ARRAY_SIZE(d)); \
39 })
40
41static void sharp_ls060_reset(struct sharp_ls060 *ctx)
42{
43 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
44 usleep_range(10000, 11000);
45 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
46 usleep_range(10000, 11000);
47 gpiod_set_value_cansleep(ctx->reset_gpio, 0);
48 usleep_range(10000, 11000);
49}
50
51static int sharp_ls060_on(struct sharp_ls060 *ctx)
52{
53 struct mipi_dsi_device *dsi = ctx->dsi;
54 struct device *dev = &dsi->dev;
55 int ret;
56
57 dsi->mode_flags |= MIPI_DSI_MODE_LPM;
58
59 ret = dsi_dcs_write_seq(dsi, 0xbb, 0x13);
60 if (ret < 0) {
61 dev_err(dev, "Failed to send command: %d\n", ret);
62 return ret;
63 }
64
65 ret = dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_MEMORY_START);
66 if (ret < 0) {
67 dev_err(dev, "Failed to send command: %d\n", ret);
68 return ret;
69 }
70
71 ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
72 if (ret < 0) {
73 dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
74 return ret;
75 }
76 msleep(120);
77
78 ret = mipi_dsi_dcs_set_display_on(dsi);
79 if (ret < 0) {
80 dev_err(dev, "Failed to set display on: %d\n", ret);
81 return ret;
82 }
83 msleep(50);
84
85 return 0;
86}
87
88static int sharp_ls060_off(struct sharp_ls060 *ctx)
89{
90 struct mipi_dsi_device *dsi = ctx->dsi;
91 struct device *dev = &dsi->dev;
92 int ret;
93
94 dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
95
96 ret = mipi_dsi_dcs_set_display_off(dsi);
97 if (ret < 0) {
98 dev_err(dev, "Failed to set display off: %d\n", ret);
99 return ret;
100 }
101 usleep_range(2000, 3000);
102
103 ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
104 if (ret < 0) {
105 dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
106 return ret;
107 }
108 msleep(121);
109
110 return 0;
111}
112
113static int sharp_ls060_prepare(struct drm_panel *panel)
114{
115 struct sharp_ls060 *ctx = to_sharp_ls060(panel);
116 struct device *dev = &ctx->dsi->dev;
117 int ret;
118
119 if (ctx->prepared)
120 return 0;
121
122 ret = regulator_enable(ctx->vddi_supply);
123 if (ret < 0)
124 return ret;
125
126 ret = regulator_enable(ctx->avdd_supply);
127 if (ret < 0)
128 goto err_avdd;
129
130 usleep_range(1000, 2000);
131
132 ret = regulator_enable(ctx->avee_supply);
133 if (ret < 0)
134 goto err_avee;
135
136 usleep_range(10000, 11000);
137
138 ret = regulator_enable(ctx->vddh_supply);
139 if (ret < 0)
140 goto err_vddh;
141
142 usleep_range(10000, 11000);
143
144 sharp_ls060_reset(ctx);
145
146 ret = sharp_ls060_on(ctx);
147 if (ret < 0) {
148 dev_err(dev, "Failed to initialize panel: %d\n", ret);
149 goto err_on;
150 }
151
152 ctx->prepared = true;
153
154 return 0;
155
156err_on:
157 regulator_disable(ctx->vddh_supply);
158
159 usleep_range(10000, 11000);
160
161err_vddh:
162 regulator_disable(ctx->avee_supply);
163
164err_avee:
165 regulator_disable(ctx->avdd_supply);
166
167 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
168
169err_avdd:
170 regulator_disable(ctx->vddi_supply);
171
172 return ret;
173}
174
175static int sharp_ls060_unprepare(struct drm_panel *panel)
176{
177 struct sharp_ls060 *ctx = to_sharp_ls060(panel);
178 struct device *dev = &ctx->dsi->dev;
179 int ret;
180
181 if (!ctx->prepared)
182 return 0;
183
184 ret = sharp_ls060_off(ctx);
185 if (ret < 0)
186 dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
187
188 regulator_disable(ctx->vddh_supply);
189
190 usleep_range(10000, 11000);
191
192 regulator_disable(ctx->avee_supply);
193 regulator_disable(ctx->avdd_supply);
194
195 gpiod_set_value_cansleep(ctx->reset_gpio, 1);
196
197 regulator_disable(ctx->vddi_supply);
198
199 ctx->prepared = false;
200 return 0;
201}
202
203static const struct drm_display_mode sharp_ls060_mode = {
204 .clock = (1080 + 96 + 16 + 64) * (1920 + 4 + 1 + 16) * 60 / 1000,
205 .hdisplay = 1080,
206 .hsync_start = 1080 + 96,
207 .hsync_end = 1080 + 96 + 16,
208 .htotal = 1080 + 96 + 16 + 64,
209 .vdisplay = 1920,
210 .vsync_start = 1920 + 4,
211 .vsync_end = 1920 + 4 + 1,
212 .vtotal = 1920 + 4 + 1 + 16,
213 .width_mm = 75,
214 .height_mm = 132,
215};
216
217static int sharp_ls060_get_modes(struct drm_panel *panel,
218 struct drm_connector *connector)
219{
220 struct drm_display_mode *mode;
221
222 mode = drm_mode_duplicate(connector->dev, &sharp_ls060_mode);
223 if (!mode)
224 return -ENOMEM;
225
226 drm_mode_set_name(mode);
227
228 mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
229 connector->display_info.width_mm = mode->width_mm;
230 connector->display_info.height_mm = mode->height_mm;
231 drm_mode_probed_add(connector, mode);
232
233 return 1;
234}
235
236static const struct drm_panel_funcs sharp_ls060_panel_funcs = {
237 .prepare = sharp_ls060_prepare,
238 .unprepare = sharp_ls060_unprepare,
239 .get_modes = sharp_ls060_get_modes,
240};
241
242static int sharp_ls060_probe(struct mipi_dsi_device *dsi)
243{
244 struct device *dev = &dsi->dev;
245 struct sharp_ls060 *ctx;
246 int ret;
247
248 ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
249 if (!ctx)
250 return -ENOMEM;
251
252 ctx->vddi_supply = devm_regulator_get(dev, "vddi");
253 if (IS_ERR(ctx->vddi_supply))
254 return PTR_ERR(ctx->vddi_supply);
255
256 ctx->vddh_supply = devm_regulator_get(dev, "vddh");
257 if (IS_ERR(ctx->vddh_supply))
258 return PTR_ERR(ctx->vddh_supply);
259
260 ctx->avdd_supply = devm_regulator_get(dev, "avdd");
261 if (IS_ERR(ctx->avdd_supply))
262 return PTR_ERR(ctx->avdd_supply);
263
264 ctx->avee_supply = devm_regulator_get(dev, "avee");
265 if (IS_ERR(ctx->avee_supply))
266 return PTR_ERR(ctx->avee_supply);
267
268 ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
269 if (IS_ERR(ctx->reset_gpio))
270 return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
271 "Failed to get reset-gpios\n");
272
273 ctx->dsi = dsi;
274 mipi_dsi_set_drvdata(dsi, ctx);
275
276 dsi->lanes = 4;
277 dsi->format = MIPI_DSI_FMT_RGB888;
278 dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
279 MIPI_DSI_MODE_NO_EOT_PACKET |
280 MIPI_DSI_CLOCK_NON_CONTINUOUS;
281
282 drm_panel_init(&ctx->panel, dev, &sharp_ls060_panel_funcs,
283 DRM_MODE_CONNECTOR_DSI);
284
285 ret = drm_panel_of_backlight(&ctx->panel);
286 if (ret)
287 return dev_err_probe(dev, ret, "Failed to get backlight\n");
288
289 drm_panel_add(&ctx->panel);
290
291 ret = mipi_dsi_attach(dsi);
292 if (ret < 0) {
293 dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
294 drm_panel_remove(&ctx->panel);
295 return ret;
296 }
297
298 return 0;
299}
300
301static int sharp_ls060_remove(struct mipi_dsi_device *dsi)
302{
303 struct sharp_ls060 *ctx = mipi_dsi_get_drvdata(dsi);
304 int ret;
305
306 ret = mipi_dsi_detach(dsi);
307 if (ret < 0)
308 dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
309
310 drm_panel_remove(&ctx->panel);
311
312 return 0;
313}
314
315static const struct of_device_id sharp_ls060t1sx01_of_match[] = {
316 { .compatible = "sharp,ls060t1sx01" },
317 { }
318};
319MODULE_DEVICE_TABLE(of, sharp_ls060t1sx01_of_match);
320
321static struct mipi_dsi_driver sharp_ls060_driver = {
322 .probe = sharp_ls060_probe,
323 .remove = sharp_ls060_remove,
324 .driver = {
325 .name = "panel-sharp-ls060t1sx01",
326 .of_match_table = sharp_ls060t1sx01_of_match,
327 },
328};
329module_mipi_dsi_driver(sharp_ls060_driver);
330
331MODULE_AUTHOR("Dmitry Baryshkov <dmitry.baryshkov@linaro.org>");
332MODULE_DESCRIPTION("DRM driver for Sharp LS060T1SX01 1080p video mode dsi panel");
333MODULE_LICENSE("GPL v2");
334
