1// SPDX-License-Identifier: GPL-2.0-only
2/* Copyright (c) 2020 Caleb Connolly <caleb@connolly.tech>
3 * Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
4 * Copyright (c) 2020, 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#include <linux/backlight.h>
13
14#include <video/mipi_display.h>
15
16#include <drm/drm_mipi_dsi.h>
17#include <drm/drm_modes.h>
18#include <drm/drm_panel.h>
19
20struct sofef00_panel {
21	struct drm_panel panel;
22	struct mipi_dsi_device *dsi;
23	struct regulator *supply;
24	struct gpio_desc *reset_gpio;
25	const struct drm_display_mode *mode;
26};
27
28static inline
29struct sofef00_panel *to_sofef00_panel(struct drm_panel *panel)
30{
31	return container_of(panel, struct sofef00_panel, panel);
32}
33
34static void sofef00_panel_reset(struct sofef00_panel *ctx)
35{
36	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
37	usleep_range(5000, 6000);
38	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
39	usleep_range(2000, 3000);
40	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
41	usleep_range(12000, 13000);
42}
43
44static int sofef00_panel_on(struct sofef00_panel *ctx)
45{
46	struct mipi_dsi_device *dsi = ctx->dsi;
47	struct device *dev = &dsi->dev;
48	int ret;
49
50	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
51
52	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
53	if (ret < 0) {
54		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
55		return ret;
56	}
57	usleep_range(10000, 11000);
58
59	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
60
61	ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
62	if (ret < 0) {
63		dev_err(dev, "Failed to set tear on: %d\n", ret);
64		return ret;
65	}
66
67	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
68	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a);
69	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x07);
70	mipi_dsi_dcs_write_seq(dsi, 0xb6, 0x12);
71	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5);
72	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x20);
73	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
74
75	ret = mipi_dsi_dcs_set_display_on(dsi);
76	if (ret < 0) {
77		dev_err(dev, "Failed to set display on: %d\n", ret);
78		return ret;
79	}
80
81	return 0;
82}
83
84static int sofef00_panel_off(struct sofef00_panel *ctx)
85{
86	struct mipi_dsi_device *dsi = ctx->dsi;
87	struct device *dev = &dsi->dev;
88	int ret;
89
90	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
91
92	ret = mipi_dsi_dcs_set_display_off(dsi);
93	if (ret < 0) {
94		dev_err(dev, "Failed to set display off: %d\n", ret);
95		return ret;
96	}
97	msleep(40);
98
99	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
100	if (ret < 0) {
101		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
102		return ret;
103	}
104	msleep(160);
105
106	return 0;
107}
108
109static int sofef00_panel_prepare(struct drm_panel *panel)
110{
111	struct sofef00_panel *ctx = to_sofef00_panel(panel);
112	struct device *dev = &ctx->dsi->dev;
113	int ret;
114
115	ret = regulator_enable(ctx->supply);
116	if (ret < 0) {
117		dev_err(dev, "Failed to enable regulator: %d\n", ret);
118		return ret;
119	}
120
121	sofef00_panel_reset(ctx);
122
123	ret = sofef00_panel_on(ctx);
124	if (ret < 0) {
125		dev_err(dev, "Failed to initialize panel: %d\n", ret);
126		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
127		return ret;
128	}
129
130	return 0;
131}
132
133static int sofef00_panel_unprepare(struct drm_panel *panel)
134{
135	struct sofef00_panel *ctx = to_sofef00_panel(panel);
136	struct device *dev = &ctx->dsi->dev;
137	int ret;
138
139	ret = sofef00_panel_off(ctx);
140	if (ret < 0)
141		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
142
143	regulator_disable(ctx->supply);
144
145	return 0;
146}
147
148static const struct drm_display_mode enchilada_panel_mode = {
149	.clock = (1080 + 112 + 16 + 36) * (2280 + 36 + 8 + 12) * 60 / 1000,
150	.hdisplay = 1080,
151	.hsync_start = 1080 + 112,
152	.hsync_end = 1080 + 112 + 16,
153	.htotal = 1080 + 112 + 16 + 36,
154	.vdisplay = 2280,
155	.vsync_start = 2280 + 36,
156	.vsync_end = 2280 + 36 + 8,
157	.vtotal = 2280 + 36 + 8 + 12,
158	.width_mm = 68,
159	.height_mm = 145,
160};
161
162static const struct drm_display_mode fajita_panel_mode = {
163	.clock = (1080 + 72 + 16 + 36) * (2340 + 32 + 4 + 18) * 60 / 1000,
164	.hdisplay = 1080,
165	.hsync_start = 1080 + 72,
166	.hsync_end = 1080 + 72 + 16,
167	.htotal = 1080 + 72 + 16 + 36,
168	.vdisplay = 2340,
169	.vsync_start = 2340 + 32,
170	.vsync_end = 2340 + 32 + 4,
171	.vtotal = 2340 + 32 + 4 + 18,
172	.width_mm = 68,
173	.height_mm = 145,
174};
175
176static int sofef00_panel_get_modes(struct drm_panel *panel, struct drm_connector *connector)
177{
178	struct drm_display_mode *mode;
179	struct sofef00_panel *ctx = to_sofef00_panel(panel);
180
181	mode = drm_mode_duplicate(connector->dev, ctx->mode);
182	if (!mode)
183		return -ENOMEM;
184
185	drm_mode_set_name(mode);
186
187	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
188	connector->display_info.width_mm = mode->width_mm;
189	connector->display_info.height_mm = mode->height_mm;
190	drm_mode_probed_add(connector, mode);
191
192	return 1;
193}
194
195static const struct drm_panel_funcs sofef00_panel_panel_funcs = {
196	.prepare = sofef00_panel_prepare,
197	.unprepare = sofef00_panel_unprepare,
198	.get_modes = sofef00_panel_get_modes,
199};
200
201static int sofef00_panel_bl_update_status(struct backlight_device *bl)
202{
203	struct mipi_dsi_device *dsi = bl_get_data(bl);
204	int err;
205	u16 brightness = (u16)backlight_get_brightness(bl);
206
207	err = mipi_dsi_dcs_set_display_brightness_large(dsi, brightness);
208	if (err < 0)
209		return err;
210
211	return 0;
212}
213
214static const struct backlight_ops sofef00_panel_bl_ops = {
215	.update_status = sofef00_panel_bl_update_status,
216};
217
218static struct backlight_device *
219sofef00_create_backlight(struct mipi_dsi_device *dsi)
220{
221	struct device *dev = &dsi->dev;
222	const struct backlight_properties props = {
223		.type = BACKLIGHT_PLATFORM,
224		.brightness = 1023,
225		.max_brightness = 1023,
226	};
227
228	return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
229					      &sofef00_panel_bl_ops, &props);
230}
231
232static int sofef00_panel_probe(struct mipi_dsi_device *dsi)
233{
234	struct device *dev = &dsi->dev;
235	struct sofef00_panel *ctx;
236	int ret;
237
238	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
239	if (!ctx)
240		return -ENOMEM;
241
242	ctx->mode = of_device_get_match_data(dev);
243
244	if (!ctx->mode) {
245		dev_err(dev, "Missing device mode\n");
246		return -ENODEV;
247	}
248
249	ctx->supply = devm_regulator_get(dev, "vddio");
250	if (IS_ERR(ctx->supply))
251		return dev_err_probe(dev, PTR_ERR(ctx->supply),
252				     "Failed to get vddio regulator\n");
253
254	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
255	if (IS_ERR(ctx->reset_gpio))
256		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
257				     "Failed to get reset-gpios\n");
258
259	ctx->dsi = dsi;
260	mipi_dsi_set_drvdata(dsi, ctx);
261
262	dsi->lanes = 4;
263	dsi->format = MIPI_DSI_FMT_RGB888;
264
265	drm_panel_init(&ctx->panel, dev, &sofef00_panel_panel_funcs,
266		       DRM_MODE_CONNECTOR_DSI);
267
268	ctx->panel.backlight = sofef00_create_backlight(dsi);
269	if (IS_ERR(ctx->panel.backlight))
270		return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
271				     "Failed to create backlight\n");
272
273	drm_panel_add(&ctx->panel);
274
275	ret = mipi_dsi_attach(dsi);
276	if (ret < 0) {
277		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
278		drm_panel_remove(&ctx->panel);
279		return ret;
280	}
281
282	return 0;
283}
284
285static void sofef00_panel_remove(struct mipi_dsi_device *dsi)
286{
287	struct sofef00_panel *ctx = mipi_dsi_get_drvdata(dsi);
288	int ret;
289
290	ret = mipi_dsi_detach(dsi);
291	if (ret < 0)
292		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
293
294	drm_panel_remove(&ctx->panel);
295}
296
297static const struct of_device_id sofef00_panel_of_match[] = {
298	{ // OnePlus 6 / enchilada
299		.compatible = "samsung,sofef00",
300		.data = &enchilada_panel_mode,
301	},
302	{ // OnePlus 6T / fajita
303		.compatible = "samsung,s6e3fc2x01",
304		.data = &fajita_panel_mode,
305	},
306	{ /* sentinel */ }
307};
308MODULE_DEVICE_TABLE(of, sofef00_panel_of_match);
309
310static struct mipi_dsi_driver sofef00_panel_driver = {
311	.probe = sofef00_panel_probe,
312	.remove = sofef00_panel_remove,
313	.driver = {
314		.name = "panel-oneplus6",
315		.of_match_table = sofef00_panel_of_match,
316	},
317};
318
319module_mipi_dsi_driver(sofef00_panel_driver);
320
321MODULE_AUTHOR("Caleb Connolly <caleb@connolly.tech>");
322MODULE_DESCRIPTION("DRM driver for Samsung AMOLED DSI panels found in OnePlus 6/6T phones");
323MODULE_LICENSE("GPL v2");
324