1 // SPDX-License-Identifier: GPL-2.0-only
2 /* Copyright (c) 2021 Linaro Ltd.
3  * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
4  *   Copyright (c) 2013-2014, 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 
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 
19 struct 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 
30 static 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 
41 static 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 
51 static 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 
88 static 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 
113 static 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 
156 err_on:
157 	regulator_disable(ctx->vddh_supply);
158 
159 	usleep_range(10000, 11000);
160 
161 err_vddh:
162 	regulator_disable(ctx->avee_supply);
163 
164 err_avee:
165 	regulator_disable(ctx->avdd_supply);
166 
167 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
168 
169 err_avdd:
170 	regulator_disable(ctx->vddi_supply);
171 
172 	return ret;
173 }
174 
175 static 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 
203 static 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 
217 static 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 
236 static 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 
242 static 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 
301 static void 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 
313 static const struct of_device_id sharp_ls060t1sx01_of_match[] = {
314 	{ .compatible = "sharp,ls060t1sx01" },
315 	{ /* sentinel */ }
316 };
317 MODULE_DEVICE_TABLE(of, sharp_ls060t1sx01_of_match);
318 
319 static struct mipi_dsi_driver sharp_ls060_driver = {
320 	.probe = sharp_ls060_probe,
321 	.remove = sharp_ls060_remove,
322 	.driver = {
323 		.name = "panel-sharp-ls060t1sx01",
324 		.of_match_table = sharp_ls060t1sx01_of_match,
325 	},
326 };
327 module_mipi_dsi_driver(sharp_ls060_driver);
328 
329 MODULE_AUTHOR("Dmitry Baryshkov <dmitry.baryshkov@linaro.org>");
330 MODULE_DESCRIPTION("DRM driver for Sharp LS060T1SX01 1080p video mode dsi panel");
331 MODULE_LICENSE("GPL v2");
332