summaryrefslogtreecommitdiffstats
path: root/drivers/gpu/drm/panel/panel-jdi-fhd-r63452.c
blob: 483dc88d16d84d6273be34452399244cd5588fd6 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
// SPDX-License-Identifier: GPL-2.0-only
/*
 * Copyright (c) 2021 Raffaele Tranquillini <raffaele.tranquillini@gmail.com>
 *
 * Generated using linux-mdss-dsi-panel-driver-generator from Lineage OS device tree:
 * https://github.com/LineageOS/android_kernel_xiaomi_msm8996/blob/lineage-18.1/arch/arm/boot/dts/qcom/a1-msm8996-mtp.dtsi
 */

#include <linux/delay.h>
#include <linux/gpio/consumer.h>
#include <linux/module.h>
#include <linux/of.h>

#include <video/mipi_display.h>

#include <drm/drm_mipi_dsi.h>
#include <drm/drm_modes.h>
#include <drm/drm_panel.h>

struct jdi_fhd_r63452 {
	struct drm_panel panel;
	struct mipi_dsi_device *dsi;
	struct gpio_desc *reset_gpio;
};

static inline struct jdi_fhd_r63452 *to_jdi_fhd_r63452(struct drm_panel *panel)
{
	return container_of(panel, struct jdi_fhd_r63452, panel);
}

static void jdi_fhd_r63452_reset(struct jdi_fhd_r63452 *ctx)
{
	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
	usleep_range(10000, 11000);
	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
	usleep_range(1000, 2000);
	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
	usleep_range(10000, 11000);
}

static int jdi_fhd_r63452_on(struct jdi_fhd_r63452 *ctx)
{
	struct mipi_dsi_device *dsi = ctx->dsi;
	struct device *dev = &dsi->dev;
	int ret;

	dsi->mode_flags |= MIPI_DSI_MODE_LPM;

	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x00);
	mipi_dsi_generic_write_seq(dsi, 0xd6, 0x01);
	mipi_dsi_generic_write_seq(dsi, 0xec,
				   0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
				   0x13, 0x15, 0x68, 0x0b, 0xb5);
	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);

	ret = mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
	if (ret < 0) {
		dev_err(dev, "Failed to set tear on: %d\n", ret);
		return ret;
	}

	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_ADDRESS_MODE, 0x00);

	ret = mipi_dsi_dcs_set_pixel_format(dsi, 0x77);
	if (ret < 0) {
		dev_err(dev, "Failed to set pixel format: %d\n", ret);
		return ret;
	}

	ret = mipi_dsi_dcs_set_column_address(dsi, 0x0000, 0x0437);
	if (ret < 0) {
		dev_err(dev, "Failed to set column address: %d\n", ret);
		return ret;
	}

	ret = mipi_dsi_dcs_set_page_address(dsi, 0x0000, 0x077f);
	if (ret < 0) {
		dev_err(dev, "Failed to set page address: %d\n", ret);
		return ret;
	}

	ret = mipi_dsi_dcs_set_tear_scanline(dsi, 0x0000);
	if (ret < 0) {
		dev_err(dev, "Failed to set tear scanline: %d\n", ret);
		return ret;
	}

	ret = mipi_dsi_dcs_set_display_brightness(dsi, 0x00ff);
	if (ret < 0) {
		dev_err(dev, "Failed to set display brightness: %d\n", ret);
		return ret;
	}

	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);
	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_SET_CABC_MIN_BRIGHTNESS, 0x00);
	mipi_dsi_dcs_write_seq(dsi, 0x84, 0x00);

	ret = mipi_dsi_dcs_set_display_on(dsi);
	if (ret < 0) {
		dev_err(dev, "Failed to set display on: %d\n", ret);
		return ret;
	}
	msleep(20);

	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
	if (ret < 0) {
		dev_err(dev, "Failed to exit sleep mode: %d\n", ret);
		return ret;
	}
	msleep(80);

	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x04);
	mipi_dsi_dcs_write_seq(dsi, 0x84, 0x00);
	mipi_dsi_generic_write_seq(dsi, 0xc8, 0x11);
	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);

	return 0;
}

static int jdi_fhd_r63452_off(struct jdi_fhd_r63452 *ctx)
{
	struct mipi_dsi_device *dsi = ctx->dsi;
	struct device *dev = &dsi->dev;
	int ret;

	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;

	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x00);
	mipi_dsi_generic_write_seq(dsi, 0xd6, 0x01);
	mipi_dsi_generic_write_seq(dsi, 0xec,
				   0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
				   0x13, 0x15, 0x68, 0x0b, 0x95);
	mipi_dsi_generic_write_seq(dsi, 0xb0, 0x03);

	ret = mipi_dsi_dcs_set_display_off(dsi);
	if (ret < 0) {
		dev_err(dev, "Failed to set display off: %d\n", ret);
		return ret;
	}
	usleep_range(2000, 3000);

	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
	if (ret < 0) {
		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
		return ret;
	}
	msleep(120);

	return 0;
}

static int jdi_fhd_r63452_prepare(struct drm_panel *panel)
{
	struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
	struct device *dev = &ctx->dsi->dev;
	int ret;

	jdi_fhd_r63452_reset(ctx);

	ret = jdi_fhd_r63452_on(ctx);
	if (ret < 0) {
		dev_err(dev, "Failed to initialize panel: %d\n", ret);
		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
		return ret;
	}

	return 0;
}

static int jdi_fhd_r63452_unprepare(struct drm_panel *panel)
{
	struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
	struct device *dev = &ctx->dsi->dev;
	int ret;

	ret = jdi_fhd_r63452_off(ctx);
	if (ret < 0)
		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);

	gpiod_set_value_cansleep(ctx->reset_gpio, 1);

	return 0;
}

static const struct drm_display_mode jdi_fhd_r63452_mode = {
	.clock = (1080 + 120 + 16 + 40) * (1920 + 4 + 2 + 4) * 60 / 1000,
	.hdisplay = 1080,
	.hsync_start = 1080 + 120,
	.hsync_end = 1080 + 120 + 16,
	.htotal = 1080 + 120 + 16 + 40,
	.vdisplay = 1920,
	.vsync_start = 1920 + 4,
	.vsync_end = 1920 + 4 + 2,
	.vtotal = 1920 + 4 + 2 + 4,
	.width_mm = 64,
	.height_mm = 114,
};

static int jdi_fhd_r63452_get_modes(struct drm_panel *panel,
				    struct drm_connector *connector)
{
	struct drm_display_mode *mode;

	mode = drm_mode_duplicate(connector->dev, &jdi_fhd_r63452_mode);
	if (!mode)
		return -ENOMEM;

	drm_mode_set_name(mode);

	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
	connector->display_info.width_mm = mode->width_mm;
	connector->display_info.height_mm = mode->height_mm;
	drm_mode_probed_add(connector, mode);

	return 1;
}

static const struct drm_panel_funcs jdi_fhd_r63452_panel_funcs = {
	.prepare = jdi_fhd_r63452_prepare,
	.unprepare = jdi_fhd_r63452_unprepare,
	.get_modes = jdi_fhd_r63452_get_modes,
};

static int jdi_fhd_r63452_probe(struct mipi_dsi_device *dsi)
{
	struct device *dev = &dsi->dev;
	struct jdi_fhd_r63452 *ctx;
	int ret;

	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
	if (!ctx)
		return -ENOMEM;

	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
	if (IS_ERR(ctx->reset_gpio))
		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
				     "Failed to get reset-gpios\n");

	ctx->dsi = dsi;
	mipi_dsi_set_drvdata(dsi, ctx);

	dsi->lanes = 4;
	dsi->format = MIPI_DSI_FMT_RGB888;
	dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
			  MIPI_DSI_CLOCK_NON_CONTINUOUS;

	drm_panel_init(&ctx->panel, dev, &jdi_fhd_r63452_panel_funcs,
		       DRM_MODE_CONNECTOR_DSI);
	ctx->panel.prepare_prev_first = true;

	ret = drm_panel_of_backlight(&ctx->panel);
	if (ret)
		return dev_err_probe(dev, ret, "Failed to get backlight\n");

	drm_panel_add(&ctx->panel);

	ret = mipi_dsi_attach(dsi);
	if (ret < 0) {
		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
		return ret;
	}

	return 0;
}

static void jdi_fhd_r63452_remove(struct mipi_dsi_device *dsi)
{
	struct jdi_fhd_r63452 *ctx = mipi_dsi_get_drvdata(dsi);
	int ret;

	ret = mipi_dsi_detach(dsi);
	if (ret < 0)
		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);

	drm_panel_remove(&ctx->panel);
}

static const struct of_device_id jdi_fhd_r63452_of_match[] = {
	{ .compatible = "jdi,fhd-r63452" },
	{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, jdi_fhd_r63452_of_match);

static struct mipi_dsi_driver jdi_fhd_r63452_driver = {
	.probe = jdi_fhd_r63452_probe,
	.remove = jdi_fhd_r63452_remove,
	.driver = {
		.name = "panel-jdi-fhd-r63452",
		.of_match_table = jdi_fhd_r63452_of_match,
	},
};
module_mipi_dsi_driver(jdi_fhd_r63452_driver);

MODULE_AUTHOR("Raffaele Tranquillini <raffaele.tranquillini@gmail.com>");
MODULE_DESCRIPTION("DRM driver for JDI FHD R63452 DSI panel, command mode");
MODULE_LICENSE("GPL v2");