1//SPDX-License-Identifier: GPL-2.0-only
2//Copyright (c) 2023 Qualcomm Innovation Center, Inc. All rights reserved.
3
4#include <linux/backlight.h>
5#include <linux/delay.h>
6#include <linux/gpio/consumer.h>
7#include <linux/module.h>
8#include <linux/of.h>
9#include <linux/regulator/consumer.h>
10
11#include <drm/drm_mipi_dsi.h>
12#include <drm/drm_probe_helper.h>
13#include <drm/drm_modes.h>
14#include <drm/drm_panel.h>
15#include <drm/display/drm_dsc.h>
16#include <drm/display/drm_dsc_helper.h>
17
18#include <video/mipi_display.h>
19
20struct visionox_r66451 {
21	struct drm_panel panel;
22	struct mipi_dsi_device *dsi;
23	struct gpio_desc *reset_gpio;
24	struct regulator_bulk_data supplies[2];
25};
26
27static inline struct visionox_r66451 *to_visionox_r66451(struct drm_panel *panel)
28{
29	return container_of(panel, struct visionox_r66451, panel);
30}
31
32static void visionox_r66451_reset(struct visionox_r66451 *ctx)
33{
34	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
35	usleep_range(10000, 10100);
36	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
37	usleep_range(10000, 10100);
38	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
39	usleep_range(10000, 10100);
40}
41
42static int visionox_r66451_on(struct visionox_r66451 *ctx)
43{
44	struct mipi_dsi_device *dsi = ctx->dsi;
45
46	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
47
48	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x00);
49	mipi_dsi_dcs_write_seq(dsi, 0xc2,
50			       0x09, 0x24, 0x0c, 0x00, 0x00, 0x0c, 0x00, 0x00, 0x00,
51			       0x09, 0x3c);
52	mipi_dsi_dcs_write_seq(dsi, 0xd7,
53			       0x00, 0xb9, 0x3c, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a,
54			       0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x19,
55			       0x3c, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a);
56	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x80);
57	mipi_dsi_dcs_write_seq(dsi, 0xde,
58			       0x40, 0x00, 0x18, 0x00, 0x18, 0x00, 0x18, 0x00, 0x18,
59			       0x10, 0x00, 0x18, 0x00, 0x18, 0x00, 0x18, 0x02, 0x00, 0x00);
60	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x04);
61	mipi_dsi_dcs_write_seq(dsi, 0xe8, 0x00, 0x02);
62	mipi_dsi_dcs_write_seq(dsi, 0xe4, 0x00, 0x08);
63	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x00);
64	mipi_dsi_dcs_write_seq(dsi, 0xc4,
65			       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
66			       0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x32);
67	mipi_dsi_dcs_write_seq(dsi, 0xcf,
68			       0x64, 0x0b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08,
69			       0x00, 0x0b, 0x77, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01,
70			       0x02, 0x02, 0x02, 0x02, 0x02, 0x03);
71	mipi_dsi_dcs_write_seq(dsi, 0xd3,
72			       0x45, 0x00, 0x00, 0x01, 0x13, 0x15, 0x00, 0x15, 0x07,
73			       0x0f, 0x77, 0x77, 0x77, 0x37, 0xb2, 0x11, 0x00, 0xa0,
74			       0x3c, 0x9c);
75	mipi_dsi_dcs_write_seq(dsi, 0xd7,
76			       0x00, 0xb9, 0x34, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a,
77			       0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x19,
78			       0x34, 0x00, 0x40, 0x04, 0x00, 0xa0, 0x0a);
79	mipi_dsi_dcs_write_seq(dsi, 0xd8,
80			       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
81			       0x3a, 0x00, 0x3a, 0x00, 0x3a, 0x00, 0x3a, 0x00, 0x3a,
82			       0x05, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
83			       0x00, 0x0a, 0x00, 0x0a, 0x00, 0x00, 0x00, 0x00, 0x00,
84			       0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0a,
85			       0x00, 0x32, 0x00, 0x0a, 0x00, 0x22);
86	mipi_dsi_dcs_write_seq(dsi, 0xdf,
87			       0x50, 0x42, 0x58, 0x81, 0x2d, 0x00, 0x00, 0x00, 0x00,
88			       0x00, 0x00, 0x6b, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
89			       0x00, 0x00, 0x01, 0x0f, 0xff, 0xd4, 0x0e, 0x00, 0x00,
90			       0x00, 0x00, 0x00, 0x00, 0x0f, 0x53, 0xf1, 0x00, 0x00,
91			       0x00, 0x00, 0x00, 0x00, 0x00, 0x00);
92	mipi_dsi_dcs_write_seq(dsi, 0xf7, 0x01);
93	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x80);
94	mipi_dsi_dcs_write_seq(dsi, 0xe4, 0x34, 0xb4, 0x00, 0x00, 0x00, 0x39, 0x04, 0x09, 0x34);
95	mipi_dsi_dcs_write_seq(dsi, 0xe6, 0x00);
96	mipi_dsi_dcs_write_seq(dsi, 0xb0, 0x04);
97	mipi_dsi_dcs_write_seq(dsi, 0xdf, 0x50, 0x40);
98	mipi_dsi_dcs_write_seq(dsi, 0xf3, 0x50, 0x00, 0x00, 0x00, 0x00);
99	mipi_dsi_dcs_write_seq(dsi, 0xf2, 0x11);
100	mipi_dsi_dcs_write_seq(dsi, 0xf3, 0x01, 0x00, 0x00, 0x00, 0x01);
101	mipi_dsi_dcs_write_seq(dsi, 0xf4, 0x00, 0x02);
102	mipi_dsi_dcs_write_seq(dsi, 0xf2, 0x19);
103	mipi_dsi_dcs_write_seq(dsi, 0xdf, 0x50, 0x42);
104	mipi_dsi_dcs_set_tear_on(dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
105	mipi_dsi_dcs_set_column_address(dsi, 0, 1080 - 1);
106	mipi_dsi_dcs_set_page_address(dsi, 0, 2340 - 1);
107
108	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
109
110	return 0;
111}
112
113static int visionox_r66451_off(struct visionox_r66451 *ctx)
114{
115	ctx->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
116	return 0;
117}
118
119static int visionox_r66451_prepare(struct drm_panel *panel)
120{
121	struct visionox_r66451 *ctx = to_visionox_r66451(panel);
122	struct mipi_dsi_device *dsi = ctx->dsi;
123	struct device *dev = &dsi->dev;
124	int ret;
125
126	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies),
127				    ctx->supplies);
128	if (ret < 0)
129		return ret;
130
131	visionox_r66451_reset(ctx);
132
133	ret = visionox_r66451_on(ctx);
134	if (ret < 0) {
135		dev_err(dev, "Failed to initialize panel: %d\n", ret);
136		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
137		regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
138		return ret;
139	}
140
141	mipi_dsi_compression_mode(ctx->dsi, true);
142
143	return 0;
144}
145
146static int visionox_r66451_unprepare(struct drm_panel *panel)
147{
148	struct visionox_r66451 *ctx = to_visionox_r66451(panel);
149	struct device *dev = &ctx->dsi->dev;
150	int ret;
151
152	ret = visionox_r66451_off(ctx);
153	if (ret < 0)
154		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
155
156	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
157	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);
158
159	return 0;
160}
161
162static const struct drm_display_mode visionox_r66451_mode = {
163	.clock = 345830,
164	.hdisplay = 1080,
165	.hsync_start = 1175,
166	.hsync_end = 1176,
167	.htotal = 1216,
168	.vdisplay = 2340,
169	.vsync_start = 2365,
170	.vsync_end = 2366,
171	.vtotal = 2370,
172	.width_mm = 0,
173	.height_mm = 0,
174	.type = DRM_MODE_TYPE_DRIVER,
175};
176
177static int visionox_r66451_enable(struct drm_panel *panel)
178{
179	struct visionox_r66451 *ctx = to_visionox_r66451(panel);
180	struct mipi_dsi_device *dsi = ctx->dsi;
181	struct drm_dsc_picture_parameter_set pps;
182	int ret;
183
184	if (!dsi->dsc) {
185		dev_err(&dsi->dev, "DSC not attached to DSI\n");
186		return -ENODEV;
187	}
188
189	drm_dsc_pps_payload_pack(&pps, dsi->dsc);
190	ret = mipi_dsi_picture_parameter_set(dsi, &pps);
191	if (ret) {
192		dev_err(&dsi->dev, "Failed to set PPS\n");
193		return ret;
194	}
195
196	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);
197	if (ret < 0) {
198		dev_err(&dsi->dev, "Failed to exit sleep mode: %d\n", ret);
199		return ret;
200	}
201	msleep(120);
202
203	ret = mipi_dsi_dcs_set_display_on(dsi);
204	if (ret < 0) {
205		dev_err(&dsi->dev, "Failed on set display on: %d\n", ret);
206		return ret;
207	}
208	msleep(20);
209
210	return 0;
211}
212
213static int visionox_r66451_disable(struct drm_panel *panel)
214{
215	struct visionox_r66451 *ctx = to_visionox_r66451(panel);
216	struct mipi_dsi_device *dsi = ctx->dsi;
217	struct device *dev = &dsi->dev;
218	int ret;
219
220	ret = mipi_dsi_dcs_set_display_off(dsi);
221	if (ret < 0) {
222		dev_err(dev, "Failed to set display off: %d\n", ret);
223		return ret;
224	}
225	msleep(20);
226
227	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);
228	if (ret < 0) {
229		dev_err(dev, "Failed to enter sleep mode: %d\n", ret);
230		return ret;
231	}
232	msleep(120);
233
234	return 0;
235}
236
237static int visionox_r66451_get_modes(struct drm_panel *panel,
238				    struct drm_connector *connector)
239{
240	drm_connector_helper_get_modes_fixed(connector, &visionox_r66451_mode);
241	return 1;
242}
243
244static const struct drm_panel_funcs visionox_r66451_funcs = {
245	.prepare = visionox_r66451_prepare,
246	.unprepare = visionox_r66451_unprepare,
247	.get_modes = visionox_r66451_get_modes,
248	.enable = visionox_r66451_enable,
249	.disable = visionox_r66451_disable,
250};
251
252static int visionox_r66451_bl_update_status(struct backlight_device *bl)
253{
254	struct mipi_dsi_device *dsi = bl_get_data(bl);
255	u16 brightness = backlight_get_brightness(bl);
256
257	return mipi_dsi_dcs_set_display_brightness(dsi, brightness);
258}
259
260static const struct backlight_ops visionox_r66451_bl_ops = {
261	.update_status = visionox_r66451_bl_update_status,
262};
263
264static struct backlight_device *
265visionox_r66451_create_backlight(struct mipi_dsi_device *dsi)
266{
267	struct device *dev = &dsi->dev;
268	const struct backlight_properties props = {
269		.type = BACKLIGHT_RAW,
270		.brightness = 255,
271		.max_brightness = 4095,
272	};
273
274	return devm_backlight_device_register(dev, dev_name(dev), dev, dsi,
275					      &visionox_r66451_bl_ops, &props);
276}
277
278static int visionox_r66451_probe(struct mipi_dsi_device *dsi)
279{
280	struct device *dev = &dsi->dev;
281	struct visionox_r66451 *ctx;
282	struct drm_dsc_config *dsc;
283	int ret = 0;
284
285	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
286	if (!ctx)
287		return -ENOMEM;
288
289	dsc = devm_kzalloc(dev, sizeof(*dsc), GFP_KERNEL);
290	if (!dsc)
291		return -ENOMEM;
292
293	/* Set DSC params */
294	dsc->dsc_version_major = 0x1;
295	dsc->dsc_version_minor = 0x2;
296
297	dsc->slice_height = 20;
298	dsc->slice_width = 540;
299	dsc->slice_count = 2;
300	dsc->bits_per_component = 8;
301	dsc->bits_per_pixel = 8 << 4;
302	dsc->block_pred_enable = true;
303
304	dsi->dsc = dsc;
305
306	ctx->supplies[0].supply = "vddio";
307	ctx->supplies[1].supply = "vdd";
308
309	ret = devm_regulator_bulk_get(&dsi->dev, ARRAY_SIZE(ctx->supplies),
310			ctx->supplies);
311
312	if (ret < 0)
313		return ret;
314
315	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);
316	if (IS_ERR(ctx->reset_gpio))
317		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), "Failed to get reset-gpios\n");
318
319	ctx->dsi = dsi;
320	mipi_dsi_set_drvdata(dsi, ctx);
321
322	dsi->lanes = 4;
323	dsi->format = MIPI_DSI_FMT_RGB888;
324	dsi->mode_flags = MIPI_DSI_MODE_LPM | MIPI_DSI_CLOCK_NON_CONTINUOUS;
325	ctx->panel.prepare_prev_first = true;
326
327	drm_panel_init(&ctx->panel, dev, &visionox_r66451_funcs, DRM_MODE_CONNECTOR_DSI);
328	ctx->panel.backlight = visionox_r66451_create_backlight(dsi);
329	if (IS_ERR(ctx->panel.backlight))
330		return dev_err_probe(dev, PTR_ERR(ctx->panel.backlight),
331				"Failed to create backlight\n");
332
333	drm_panel_add(&ctx->panel);
334
335	ret = mipi_dsi_attach(dsi);
336	if (ret < 0) {
337		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
338		drm_panel_remove(&ctx->panel);
339	}
340
341	return ret;
342}
343
344static void visionox_r66451_remove(struct mipi_dsi_device *dsi)
345{
346	struct visionox_r66451 *ctx = mipi_dsi_get_drvdata(dsi);
347	int ret;
348
349	ret = mipi_dsi_detach(dsi);
350	if (ret < 0)
351		dev_err(&dsi->dev, "Failed to detach DSI host: %d\n", ret);
352
353	drm_panel_remove(&ctx->panel);
354}
355
356static const struct of_device_id visionox_r66451_of_match[] = {
357	{.compatible = "visionox,r66451"},
358	{ /*sentinel*/ }
359};
360MODULE_DEVICE_TABLE(of, visionox_r66451_of_match);
361
362static struct mipi_dsi_driver visionox_r66451_driver = {
363	.probe = visionox_r66451_probe,
364	.remove = visionox_r66451_remove,
365	.driver = {
366		.name = "panel-visionox-r66451",
367		.of_match_table = visionox_r66451_of_match,
368	},
369};
370
371module_mipi_dsi_driver(visionox_r66451_driver);
372
373MODULE_AUTHOR("Jessica Zhang <quic_jesszhan@quicinc.com>");
374MODULE_DESCRIPTION("Panel driver for the Visionox R66451 AMOLED DSI panel");
375MODULE_LICENSE("GPL");
376