1// SPDX-License-Identifier: GPL-2.0-only
2/*
3 * Copyright (c) 2021 Raffaele Tranquillini <raffaele.tranquillini@gmail.com>
4 *
5 * Generated using linux-mdss-dsi-panel-driver-generator from Lineage OS device tree:
6 * https://github.com/LineageOS/android_kernel_xiaomi_msm8996/blob/lineage-18.1/arch/arm/boot/dts/qcom/a1-msm8996-mtp.dtsi
7 */
8
9#include <linux/delay.h>
10#include <linux/gpio/consumer.h>
11#include <linux/module.h>
12#include <linux/of.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 jdi_fhd_r63452 {
21	struct drm_panel panel;
22	struct mipi_dsi_device *dsi;
23	struct gpio_desc *reset_gpio;
24	bool prepared;
25};
26
27static inline struct jdi_fhd_r63452 *to_jdi_fhd_r63452(struct drm_panel *panel)
28{
29	return container_of(panel, struct jdi_fhd_r63452, panel);
30}
31
32static void jdi_fhd_r63452_reset(struct jdi_fhd_r63452 *ctx)
33{
34	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
35	usleep_range(10000, 11000);
36	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
37	usleep_range(1000, 2000);
38	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
39	usleep_range(10000, 11000);
40}
41
42static int jdi_fhd_r63452_on(struct jdi_fhd_r63452 *ctx)
43{
44	struct mipi_dsi_device *dsi = ctx->dsi;
45	struct device *dev = &dsi->dev;
46	int ret;
47
48	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
49
50	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x00);
51	mipi_dsi_generic_write_seq(dsi, 0xd6, 0x01);
52	mipi_dsi_generic_write_seq(dsi, 0xec,
53				   0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
54				   0x13, 0x15, 0x68, 0x0b, 0xb5);
55	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);
56
57	ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
58	if (ret < 0) {
59		dev_err(dev, "Failed to set tear on: %d\n", ret);
60		return ret;
61	}
62
63	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
64
65	ret = mipi_dsi_dcs_set_pixel_format(dsi, 0x77);
66	if (ret < 0) {
67		dev_err(dev, "Failed to set pixel format: %d\n", ret);
68		return ret;
69	}
70
71	ret = mipi_dsi_dcs_set_column_address(dsi, 0x0000, 0x0437);
72	if (ret < 0) {
73		dev_err(dev, "Failed to set column address: %d\n", ret);
74		return ret;
75	}
76
77	ret = mipi_dsi_dcs_set_page_address(dsi, 0x0000, 0x077f);
78	if (ret < 0) {
79		dev_err(dev, "Failed to set page address: %d\n", ret);
80		return ret;
81	}
82
83	ret = mipi_dsi_dcs_set_tear_scanline(dsi, 0x0000);
84	if (ret < 0) {
85		dev_err(dev, "Failed to set tear scanline: %d\n", ret);
86		return ret;
87	}
88
89	ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
90	if (ret < 0) {
91		dev_err(dev, "Failed to set display brightness: %d\n", ret);
92		return ret;
93	}
94
95	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);
96	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
97	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_CABC_MIN_BRIGHTNESS, 0x00);
98	mipi_dsi_dcs_write_seq(dsi, 0x84, 0x00);
99
100	ret = mipi_dsi_dcs_set_display_on(dsi);
101	if (ret < 0) {
102		dev_err(dev, "Failed to set display on: %d\n", ret);
103		return ret;
104	}
105	msleep(20);
106
107	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
108	if (ret < 0) {
109		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
110		return ret;
111	}
112	msleep(80);
113
114	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x04);
115	mipi_dsi_dcs_write_seq(dsi, 0x84, 0x00);
116	mipi_dsi_generic_write_seq(dsi, 0xc8, 0x11);
117	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);
118
119	return 0;
120}
121
122static int jdi_fhd_r63452_off(struct jdi_fhd_r63452 *ctx)
123{
124	struct mipi_dsi_device *dsi = ctx->dsi;
125	struct device *dev = &dsi->dev;
126	int ret;
127
128	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
129
130	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x00);
131	mipi_dsi_generic_write_seq(dsi, 0xd6, 0x01);
132	mipi_dsi_generic_write_seq(dsi, 0xec,
133				   0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
134				   0x13, 0x15, 0x68, 0x0b, 0x95);
135	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);
136
137	ret = mipi_dsi_dcs_set_display_off(dsi);
138	if (ret < 0) {
139		dev_err(dev, "Failed to set display off: %d\n", ret);
140		return ret;
141	}
142	usleep_range(2000, 3000);
143
144	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
145	if (ret < 0) {
146		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
147		return ret;
148	}
149	msleep(120);
150
151	return 0;
152}
153
154static int jdi_fhd_r63452_prepare(struct drm_panel *panel)
155{
156	struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
157	struct device *dev = &ctx->dsi->dev;
158	int ret;
159
160	if (ctx->prepared)
161		return 0;
162
163	jdi_fhd_r63452_reset(ctx);
164
165	ret = jdi_fhd_r63452_on(ctx);
166	if (ret < 0) {
167		dev_err(dev, "Failed to initialize panel: %d\n", ret);
168		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
169		return ret;
170	}
171
172	ctx->prepared = true;
173	return 0;
174}
175
176static int jdi_fhd_r63452_unprepare(struct drm_panel *panel)
177{
178	struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
179	struct device *dev = &ctx->dsi->dev;
180	int ret;
181
182	if (!ctx->prepared)
183		return 0;
184
185	ret = jdi_fhd_r63452_off(ctx);
186	if (ret < 0)
187		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
188
189	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
190
191	ctx->prepared = false;
192	return 0;
193}
194
195static const struct drm_display_mode jdi_fhd_r63452_mode = {
196	.clock = (1080 + 120 + 16 + 40) * (1920 + 4 + 2 + 4) * 60 / 1000,
197	.hdisplay = 1080,
198	.hsync_start = 1080 + 120,
199	.hsync_end = 1080 + 120 + 16,
200	.htotal = 1080 + 120 + 16 + 40,
201	.vdisplay = 1920,
202	.vsync_start = 1920 + 4,
203	.vsync_end = 1920 + 4 + 2,
204	.vtotal = 1920 + 4 + 2 + 4,
205	.width_mm = 64,
206	.height_mm = 114,
207};
208
209static int jdi_fhd_r63452_get_modes(struct drm_panel *panel,
210				    struct drm_connector *connector)
211{
212	struct drm_display_mode *mode;
213
214	mode = drm_mode_duplicate(connector->dev, &jdi_fhd_r63452_mode);
215	if (!mode)
216		return -ENOMEM;
217
218	drm_mode_set_name(mode);
219
220	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
221	connector->display_info.width_mm = mode->width_mm;
222	connector->display_info.height_mm = mode->height_mm;
223	drm_mode_probed_add(connector, mode);
224
225	return 1;
226}
227
228static const struct drm_panel_funcs jdi_fhd_r63452_panel_funcs = {
229	.prepare = jdi_fhd_r63452_prepare,
230	.unprepare = jdi_fhd_r63452_unprepare,
231	.get_modes = jdi_fhd_r63452_get_modes,
232};
233
234static int jdi_fhd_r63452_probe(struct mipi_dsi_device *dsi)
235{
236	struct device *dev = &dsi->dev;
237	struct jdi_fhd_r63452 *ctx;
238	int ret;
239
240	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
241	if (!ctx)
242		return -ENOMEM;
243
244	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
245	if (IS_ERR(ctx->reset_gpio))
246		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
247				     "Failed to get reset-gpios\n");
248
249	ctx->dsi = dsi;
250	mipi_dsi_set_drvdata(dsi, ctx);
251
252	dsi->lanes = 4;
253	dsi->format = MIPI_DSI_FMT_RGB888;
254	dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
255			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
256
257	drm_panel_init(&ctx->panel, dev, &jdi_fhd_r63452_panel_funcs,
258		       DRM_MODE_CONNECTOR_DSI);
259
260	ret = drm_panel_of_backlight(&ctx->panel);
261	if (ret)
262		return dev_err_probe(dev, ret, "Failed to get backlight\n");
263
264	drm_panel_add(&ctx->panel);
265
266	ret = mipi_dsi_attach(dsi);
267	if (ret < 0) {
268		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
269		return ret;
270	}
271
272	return 0;
273}
274
275static void jdi_fhd_r63452_remove(struct mipi_dsi_device *dsi)
276{
277	struct jdi_fhd_r63452 *ctx = mipi_dsi_get_drvdata(dsi);
278	int ret;
279
280	ret = mipi_dsi_detach(dsi);
281	if (ret < 0)
282		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
283
284	drm_panel_remove(&ctx->panel);
285}
286
287static const struct of_device_id jdi_fhd_r63452_of_match[] = {
288	{ .compatible = "jdi,fhd-r63452" },
289	{ /* sentinel */ }
290};
291MODULE_DEVICE_TABLE(of, jdi_fhd_r63452_of_match);
292
293static struct mipi_dsi_driver jdi_fhd_r63452_driver = {
294	.probe = jdi_fhd_r63452_probe,
295	.remove = jdi_fhd_r63452_remove,
296	.driver = {
297		.name = "panel-jdi-fhd-r63452",
298		.of_match_table = jdi_fhd_r63452_of_match,
299	},
300};
301module_mipi_dsi_driver(jdi_fhd_r63452_driver);
302
303MODULE_AUTHOR("Raffaele Tranquillini <raffaele.tranquillini@gmail.com>");
304MODULE_DESCRIPTION("DRM driver for JDI FHD R63452 DSI panel, command mode");
305MODULE_LICENSE("GPL v2");
306