panel-boe-td4320.c

  1// SPDX-License-Identifier: GPL-2.0-only
  2// Copyright (c) 2024 Barnabas Czeman <barnabas.czeman@mainlining.org>
  3// Generated with linux-mdss-dsi-panel-driver-generator from vendor device tree:
  4//   Copyright (c) 2013, The Linux Foundation. All rights reserved.
  5
  6#include <linux/delay.h>
  7#include <linux/gpio/consumer.h>
  8#include <linux/mod_devicetable.h>
  9#include <linux/module.h>
 10#include <linux/regulator/consumer.h>
 11
 12#include <video/mipi_display.h>
 13
 14#include <drm/drm_mipi_dsi.h>
 15#include <drm/drm_modes.h>
 16#include <drm/drm_panel.h>
 17#include <drm/drm_probe_helper.h>
 18
 19struct boe_td4320 {
 20	struct drm_panel panel;
 21	struct mipi_dsi_device *dsi;
 22	struct regulator_bulk_data *supplies;
 23	struct gpio_desc *reset_gpio;
 24};
 25
 26static const struct regulator_bulk_data boe_td4320_supplies[] = {
 27	{ .supply = "iovcc" },
 28	{ .supply = "vsn" },
 29	{ .supply = "vsp" },
 30};
 31
 32static inline struct boe_td4320 *to_boe_td4320(struct drm_panel *panel)
 33{
 34	return container_of(panel, struct boe_td4320, panel);
 35}
 36
 37static void boe_td4320_reset(struct boe_td4320 *ctx)
 38{
 39	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
 40	usleep_range(1000, 2000);
 41	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 42	usleep_range(5000, 6000);
 43	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
 44	msleep(30);
 45}
 46
 47static int boe_td4320_on(struct boe_td4320 *ctx)
 48{
 49	struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
 50
 51	ctx->dsi->mode_flags |= MIPI_DSI_MODE_LPM;
 52
 53	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x04);
 54	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xd6, 0x00);
 55	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb8,
 56					 0x19, 0x55, 0x00, 0xbe, 0x00, 0x00,
 57					 0x00);
 58	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb9,
 59					 0x4d, 0x55, 0x05, 0xe6, 0x00, 0x02,
 60					 0x03);
 61	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xba,
 62					 0x9b, 0x5b, 0x07, 0xe6, 0x00, 0x13,
 63					 0x00);
 64	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xf9,
 65					 0x44, 0x3f, 0x00, 0x8d, 0xbf);
 66	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xce,
 67					 0x5d, 0x00, 0x0f, 0x1f, 0x2f, 0x3f,
 68					 0x4f, 0x5f, 0x6f, 0x7f, 0x8f, 0x9f,
 69					 0xaf, 0xbf, 0xcf, 0xdf, 0xef, 0xff,
 70					 0x04, 0x00, 0x02, 0x02, 0x42, 0x01,
 71					 0x69, 0x5a, 0x40, 0x40, 0x00, 0x00,
 72					 0x04, 0xfa, 0x00);
 73	mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0x00b8);
 74	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY,
 75				     0x2c);
 76	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
 77	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0xb0, 0x03);
 78	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x11, 0x00);
 79	mipi_dsi_msleep(&dsi_ctx, 96);
 80	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x29, 0x00);
 81	mipi_dsi_msleep(&dsi_ctx, 20);
 82
 83	return dsi_ctx.accum_err;
 84}
 85
 86static int boe_td4320_off(struct boe_td4320 *ctx)
 87{
 88	struct mipi_dsi_multi_context dsi_ctx = { .dsi = ctx->dsi };
 89
 90	ctx->dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
 91
 92	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
 93	mipi_dsi_msleep(&dsi_ctx, 20);
 94	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
 95	mipi_dsi_msleep(&dsi_ctx, 120);
 96
 97	return dsi_ctx.accum_err;
 98}
 99
100static int boe_td4320_prepare(struct drm_panel *panel)
101{
102	struct boe_td4320 *ctx = to_boe_td4320(panel);
103	struct device *dev = &ctx->dsi->dev;
104	int ret;
105
106	ret = regulator_bulk_enable(ARRAY_SIZE(boe_td4320_supplies), ctx->supplies);
107	if (ret < 0) {
108		dev_err(dev, "Failed to enable regulators: %d\n", ret);
109		return ret;
110	}
111
112	boe_td4320_reset(ctx);
113
114	ret = boe_td4320_on(ctx);
115	if (ret < 0) {
116		dev_err(dev, "Failed to initialize panel: %d\n", ret);
117		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
118		regulator_bulk_disable(ARRAY_SIZE(boe_td4320_supplies), ctx->supplies);
119		return ret;
120	}
121
122	return 0;
123}
124
125static int boe_td4320_unprepare(struct drm_panel *panel)
126{
127	struct boe_td4320 *ctx = to_boe_td4320(panel);
128	struct device *dev = &ctx->dsi->dev;
129	int ret;
130
131	ret = boe_td4320_off(ctx);
132	if (ret < 0)
133		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);
134
135	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
136	regulator_bulk_disable(ARRAY_SIZE(boe_td4320_supplies), ctx->supplies);
137
138	return 0;
139}
140
141static const struct drm_display_mode boe_td4320_mode = {
142	.clock = (1080 + 86 + 2 + 100) * (2340 + 4 + 4 + 60) * 60 / 1000,
143	.hdisplay = 1080,
144	.hsync_start = 1080 + 86,
145	.hsync_end = 1080 + 86 + 2,
146	.htotal = 1080 + 86 + 2 + 100,
147	.vdisplay = 2340,
148	.vsync_start = 2340 + 4,
149	.vsync_end = 2340 + 4 + 4,
150	.vtotal = 2340 + 4 + 4 + 60,
151	.width_mm = 67,
152	.height_mm = 145,
153	.type = DRM_MODE_TYPE_DRIVER,
154};
155
156static int boe_td4320_get_modes(struct drm_panel *panel,
157				struct drm_connector *connector)
158{
159	return drm_connector_helper_get_modes_fixed(connector, &boe_td4320_mode);
160}
161
162static const struct drm_panel_funcs boe_td4320_panel_funcs = {
163	.prepare = boe_td4320_prepare,
164	.unprepare = boe_td4320_unprepare,
165	.get_modes = boe_td4320_get_modes,
166};
167
168static int boe_td4320_probe(struct mipi_dsi_device *dsi)
169{
170	struct device *dev = &dsi->dev;
171	struct boe_td4320 *ctx;
172	int ret;
173
174	ctx = devm_drm_panel_alloc(dev, struct boe_td4320, panel,
175				   &boe_td4320_panel_funcs,
176				   DRM_MODE_CONNECTOR_DSI);
177	if (IS_ERR(ctx))
178		return PTR_ERR(ctx);
179
180	ret = devm_regulator_bulk_get_const(dev,
181					    ARRAY_SIZE(boe_td4320_supplies),
182					    boe_td4320_supplies,
183					    &ctx->supplies);
184	if (ret < 0)
185		return ret;
186
187	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
188	if (IS_ERR(ctx->reset_gpio))
189		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
190				     "Failed to get reset-gpios\n");
191
192	ctx->dsi = dsi;
193	mipi_dsi_set_drvdata(dsi, ctx);
194
195	dsi->lanes = 4;
196	dsi->format = MIPI_DSI_FMT_RGB888;
197	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |
198			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
199
200	ctx->panel.prepare_prev_first = true;
201
202	ret = drm_panel_of_backlight(&ctx->panel);
203	if (ret)
204		return dev_err_probe(dev, ret, "Failed to get backlight\n");
205
206	drm_panel_add(&ctx->panel);
207
208	ret = mipi_dsi_attach(dsi);
209	if (ret < 0) {
210		drm_panel_remove(&ctx->panel);
211		return dev_err_probe(dev, ret, "Failed to attach to DSI host\n");
212	}
213
214	return 0;
215}
216
217static void boe_td4320_remove(struct mipi_dsi_device *dsi)
218{
219	struct boe_td4320 *ctx = mipi_dsi_get_drvdata(dsi);
220	int ret;
221
222	ret = mipi_dsi_detach(dsi);
223	if (ret < 0)
224		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
225
226	drm_panel_remove(&ctx->panel);
227}
228
229static const struct of_device_id boe_td4320_of_match[] = {
230	{ .compatible = "boe,td4320" },
231	{ /* sentinel */ }
232};
233MODULE_DEVICE_TABLE(of, boe_td4320_of_match);
234
235static struct mipi_dsi_driver boe_td4320_driver = {
236	.probe = boe_td4320_probe,
237	.remove = boe_td4320_remove,
238	.driver = {
239		.name = "panel-boe-td4320",
240		.of_match_table = boe_td4320_of_match,
241	},
242};
243module_mipi_dsi_driver(boe_td4320_driver);
244
245MODULE_AUTHOR("Barnabas Czeman <barnabas.czeman@mainlining.org>");
246MODULE_DESCRIPTION("DRM driver for boe td4320 fhdplus video mode dsi panel");
247MODULE_LICENSE("GPL");