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};
 25
 26static inline struct jdi_fhd_r63452 *to_jdi_fhd_r63452(struct drm_panel *panel)
 27{
 28	return container_of(panel, struct jdi_fhd_r63452, panel);
 29}
 30
 31static void jdi_fhd_r63452_reset(struct jdi_fhd_r63452 *ctx)
 32{
 33	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
 34	usleep_range(10000, 11000);
 35	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
 36	usleep_range(1000, 2000);
 37	gpiod_set_value_cansleep(ctx->reset_gpio, 0);
 38	usleep_range(10000, 11000);
 39}
 40
 41static int jdi_fhd_r63452_on(struct jdi_fhd_r63452 *ctx)
 42{
 43	struct mipi_dsi_device *dsi = ctx->dsi;
 44	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 45
 46	dsi->mode_flags |= MIPI_DSI_MODE_LPM;
 47
 48	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x00);
 49	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xd6, 0x01);
 50	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xec,
 51					 0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
 52					 0x13, 0x15, 0x68, 0x0b, 0xb5);
 53	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x03);
 54
 55	mipi_dsi_dcs_set_tear_on_multi(&dsi_ctx, MIPI_DSI_DCS_TEAR_MODE_VBLANK);
 56
 57	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_ADDRESS_MODE, 0x00);
 58
 59	mipi_dsi_dcs_set_pixel_format_multi(&dsi_ctx, 0x77);
 60	mipi_dsi_dcs_set_column_address_multi(&dsi_ctx, 0x0000, 0x0437);
 61	mipi_dsi_dcs_set_page_address_multi(&dsi_ctx, 0x0000, 0x077f);
 62	mipi_dsi_dcs_set_tear_scanline_multi(&dsi_ctx, 0x0000);
 63	mipi_dsi_dcs_set_display_brightness_multi(&dsi_ctx, 0x00ff);
 64
 65	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_CONTROL_DISPLAY, 0x24);
 66	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_WRITE_POWER_SAVE, 0x00);
 67	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, MIPI_DCS_SET_CABC_MIN_BRIGHTNESS, 0x00);
 68	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x84, 0x00);
 69
 70	mipi_dsi_dcs_set_display_on_multi(&dsi_ctx);
 71	mipi_dsi_msleep(&dsi_ctx, 20);
 72	mipi_dsi_dcs_exit_sleep_mode_multi(&dsi_ctx);
 73	mipi_dsi_msleep(&dsi_ctx, 80);
 74
 75	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x04);
 76	mipi_dsi_dcs_write_seq_multi(&dsi_ctx, 0x84, 0x00);
 77	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xc8, 0x11);
 78	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x03);
 79
 80	return dsi_ctx.accum_err;
 81}
 82
 83static void jdi_fhd_r63452_off(struct jdi_fhd_r63452 *ctx)
 84{
 85	struct mipi_dsi_device *dsi = ctx->dsi;
 86	struct mipi_dsi_multi_context dsi_ctx = { .dsi = dsi };
 87
 88	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;
 89
 90	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x00);
 91	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xd6, 0x01);
 92	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xec,
 93					 0x64, 0xdc, 0xec, 0x3b, 0x52, 0x00, 0x0b, 0x0b,
 94					 0x13, 0x15, 0x68, 0x0b, 0x95);
 95	mipi_dsi_generic_write_seq_multi(&dsi_ctx, 0xb0, 0x03);
 96
 97	mipi_dsi_dcs_set_display_off_multi(&dsi_ctx);
 98	mipi_dsi_usleep_range(&dsi_ctx, 2000, 3000);
 99	mipi_dsi_dcs_enter_sleep_mode_multi(&dsi_ctx);
100	mipi_dsi_msleep(&dsi_ctx, 120);
101}
102
103static int jdi_fhd_r63452_prepare(struct drm_panel *panel)
104{
105	struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
106	int ret;
107
108	jdi_fhd_r63452_reset(ctx);
109
110	ret = jdi_fhd_r63452_on(ctx);
111	if (ret < 0)
112		gpiod_set_value_cansleep(ctx->reset_gpio, 1);
113
114	return ret;
115}
116
117static int jdi_fhd_r63452_unprepare(struct drm_panel *panel)
118{
119	struct jdi_fhd_r63452 *ctx = to_jdi_fhd_r63452(panel);
120
121	/*
122	 * NOTE: We don't return an error here as while the panel won't have
123	 * been cleanly turned off at least we've asserted the reset signal
124	 * so it should be safe to power it back on again later
125	 */
126	jdi_fhd_r63452_off(ctx);
127
128	gpiod_set_value_cansleep(ctx->reset_gpio, 1);
129
130	return 0;
131}
132
133static const struct drm_display_mode jdi_fhd_r63452_mode = {
134	.clock = (1080 + 120 + 16 + 40) * (1920 + 4 + 2 + 4) * 60 / 1000,
135	.hdisplay = 1080,
136	.hsync_start = 1080 + 120,
137	.hsync_end = 1080 + 120 + 16,
138	.htotal = 1080 + 120 + 16 + 40,
139	.vdisplay = 1920,
140	.vsync_start = 1920 + 4,
141	.vsync_end = 1920 + 4 + 2,
142	.vtotal = 1920 + 4 + 2 + 4,
143	.width_mm = 64,
144	.height_mm = 114,
145};
146
147static int jdi_fhd_r63452_get_modes(struct drm_panel *panel,
148				    struct drm_connector *connector)
149{
150	struct drm_display_mode *mode;
151
152	mode = drm_mode_duplicate(connector->dev, &jdi_fhd_r63452_mode);
153	if (!mode)
154		return -ENOMEM;
155
156	drm_mode_set_name(mode);
157
158	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;
159	connector->display_info.width_mm = mode->width_mm;
160	connector->display_info.height_mm = mode->height_mm;
161	drm_mode_probed_add(connector, mode);
162
163	return 1;
164}
165
166static const struct drm_panel_funcs jdi_fhd_r63452_panel_funcs = {
167	.prepare = jdi_fhd_r63452_prepare,
168	.unprepare = jdi_fhd_r63452_unprepare,
169	.get_modes = jdi_fhd_r63452_get_modes,
170};
171
172static int jdi_fhd_r63452_probe(struct mipi_dsi_device *dsi)
173{
174	struct device *dev = &dsi->dev;
175	struct jdi_fhd_r63452 *ctx;
176	int ret;
177
178	ctx = devm_kzalloc(dev, sizeof(*ctx), GFP_KERNEL);
179	if (!ctx)
180		return -ENOMEM;
181
182	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_HIGH);
183	if (IS_ERR(ctx->reset_gpio))
184		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio),
185				     "Failed to get reset-gpios\n");
186
187	ctx->dsi = dsi;
188	mipi_dsi_set_drvdata(dsi, ctx);
189
190	dsi->lanes = 4;
191	dsi->format = MIPI_DSI_FMT_RGB888;
192	dsi->mode_flags = MIPI_DSI_MODE_VIDEO_BURST |
193			  MIPI_DSI_CLOCK_NON_CONTINUOUS;
194
195	drm_panel_init(&ctx->panel, dev, &jdi_fhd_r63452_panel_funcs,
196		       DRM_MODE_CONNECTOR_DSI);
197	ctx->panel.prepare_prev_first = true;
198
199	ret = drm_panel_of_backlight(&ctx->panel);
200	if (ret)
201		return dev_err_probe(dev, ret, "Failed to get backlight\n");
202
203	drm_panel_add(&ctx->panel);
204
205	ret = mipi_dsi_attach(dsi);
206	if (ret < 0) {
207		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);
208		return ret;
209	}
210
211	return 0;
212}
213
214static void jdi_fhd_r63452_remove(struct mipi_dsi_device *dsi)
215{
216	struct jdi_fhd_r63452 *ctx = mipi_dsi_get_drvdata(dsi);
217	int ret;
218
219	ret = mipi_dsi_detach(dsi);
220	if (ret < 0)
221		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);
222
223	drm_panel_remove(&ctx->panel);
224}
225
226static const struct of_device_id jdi_fhd_r63452_of_match[] = {
227	{ .compatible = "jdi,fhd-r63452" },
228	{ /* sentinel */ }
229};
230MODULE_DEVICE_TABLE(of, jdi_fhd_r63452_of_match);
231
232static struct mipi_dsi_driver jdi_fhd_r63452_driver = {
233	.probe = jdi_fhd_r63452_probe,
234	.remove = jdi_fhd_r63452_remove,
235	.driver = {
236		.name = "panel-jdi-fhd-r63452",
237		.of_match_table = jdi_fhd_r63452_of_match,
238	},
239};
240module_mipi_dsi_driver(jdi_fhd_r63452_driver);
241
242MODULE_AUTHOR("Raffaele Tranquillini <raffaele.tranquillini@gmail.com>");
243MODULE_DESCRIPTION("DRM driver for JDI FHD R63452 DSI panel, command mode");
244MODULE_LICENSE("GPL v2");