1 // SPDX-License-Identifier: GPL-2.0-only
18 	struct mipi_dsi_device *dsi;  member
31 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in s6e88a0_ams452ef01_reset()
33 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in s6e88a0_ams452ef01_reset()
35 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in s6e88a0_ams452ef01_reset()
41 	struct mipi_dsi_device *dsi = ctx->dsi;  in s6e88a0_ams452ef01_on()  local
42 	struct device *dev = &dsi->dev;  in s6e88a0_ams452ef01_on()
45 	dsi->mode_flags |= MIPI_DSI_MODE_LPM;  in s6e88a0_ams452ef01_on()
47 	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0x5a, 0x5a); // enable LEVEL2 commands  in s6e88a0_ams452ef01_on()
48 	mipi_dsi_dcs_write_seq(dsi, 0xcc, 0x4c); // set Pixel Clock Divider polarity  in s6e88a0_ams452ef01_on()
50 	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);  in s6e88a0_ams452ef01_on()
58 	mipi_dsi_dcs_write_seq(dsi, 0xca,  in s6e88a0_ams452ef01_on()
70 	mipi_dsi_dcs_write_seq(dsi, 0xb2, 0x40, 0x0a, 0x17, 0x00, 0x0a);  in s6e88a0_ams452ef01_on()
71 	mipi_dsi_dcs_write_seq(dsi, 0xb6, 0x2c, 0x0b); // set default elvss voltage  in s6e88a0_ams452ef01_on()
72 	mipi_dsi_dcs_write_seq(dsi, MIPI_DCS_WRITE_POWER_SAVE, 0x00);  in s6e88a0_ams452ef01_on()
73 	mipi_dsi_dcs_write_seq(dsi, 0xf7, 0x03); // gamma/aor update  in s6e88a0_ams452ef01_on()
74 	mipi_dsi_dcs_write_seq(dsi, 0xf0, 0xa5, 0xa5); // disable LEVEL2 commands  in s6e88a0_ams452ef01_on()
76 	ret = mipi_dsi_dcs_set_display_on(dsi);  in s6e88a0_ams452ef01_on()
87 	struct mipi_dsi_device *dsi = ctx->dsi;  in s6e88a0_ams452ef01_off()  local
88 	struct device *dev = &dsi->dev;  in s6e88a0_ams452ef01_off()
91 	dsi->mode_flags &= ~MIPI_DSI_MODE_LPM;  in s6e88a0_ams452ef01_off()
93 	ret = mipi_dsi_dcs_set_display_off(dsi);  in s6e88a0_ams452ef01_off()
100 	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);  in s6e88a0_ams452ef01_off()
113 	struct device *dev = &ctx->dsi->dev;  in s6e88a0_ams452ef01_prepare()
116 	ret = regulator_bulk_enable(ARRAY_SIZE(ctx->supplies), ctx->supplies);  in s6e88a0_ams452ef01_prepare()
127 		gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in s6e88a0_ams452ef01_prepare()
128 		regulator_bulk_disable(ARRAY_SIZE(ctx->supplies),  in s6e88a0_ams452ef01_prepare()
129 				       ctx->supplies);  in s6e88a0_ams452ef01_prepare()
139 	struct device *dev = &ctx->dsi->dev;  in s6e88a0_ams452ef01_unprepare()
144 		dev_err(dev, "Failed to un-initialize panel: %d\n", ret);  in s6e88a0_ams452ef01_unprepare()
146 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in s6e88a0_ams452ef01_unprepare()
147 	regulator_bulk_disable(ARRAY_SIZE(ctx->supplies), ctx->supplies);  in s6e88a0_ams452ef01_unprepare()
171 	mode = drm_mode_duplicate(connector->dev, &s6e88a0_ams452ef01_mode);  in s6e88a0_ams452ef01_get_modes()
173 		return -ENOMEM;  in s6e88a0_ams452ef01_get_modes()
177 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in s6e88a0_ams452ef01_get_modes()
178 	connector->display_info.width_mm = mode->width_mm;  in s6e88a0_ams452ef01_get_modes()
179 	connector->display_info.height_mm = mode->height_mm;  in s6e88a0_ams452ef01_get_modes()
191 static int s6e88a0_ams452ef01_probe(struct mipi_dsi_device *dsi)  in s6e88a0_ams452ef01_probe()  argument
193 	struct device *dev = &dsi->dev;  in s6e88a0_ams452ef01_probe()
199 		return -ENOMEM;  in s6e88a0_ams452ef01_probe()
201 	ctx->supplies[0].supply = "vdd3";  in s6e88a0_ams452ef01_probe()
202 	ctx->supplies[1].supply = "vci";  in s6e88a0_ams452ef01_probe()
203 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ctx->supplies),  in s6e88a0_ams452ef01_probe()
204 				      ctx->supplies);  in s6e88a0_ams452ef01_probe()
210 	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);  in s6e88a0_ams452ef01_probe()
211 	if (IS_ERR(ctx->reset_gpio)) {  in s6e88a0_ams452ef01_probe()
212 		ret = PTR_ERR(ctx->reset_gpio);  in s6e88a0_ams452ef01_probe()
213 		dev_err(dev, "Failed to get reset-gpios: %d\n", ret);  in s6e88a0_ams452ef01_probe()
217 	ctx->dsi = dsi;  in s6e88a0_ams452ef01_probe()
218 	mipi_dsi_set_drvdata(dsi, ctx);  in s6e88a0_ams452ef01_probe()
220 	dsi->lanes = 2;  in s6e88a0_ams452ef01_probe()
221 	dsi->format = MIPI_DSI_FMT_RGB888;  in s6e88a0_ams452ef01_probe()
222 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST;  in s6e88a0_ams452ef01_probe()
224 	drm_panel_init(&ctx->panel, dev, &s6e88a0_ams452ef01_panel_funcs,  in s6e88a0_ams452ef01_probe()
227 	drm_panel_add(&ctx->panel);  in s6e88a0_ams452ef01_probe()
229 	ret = mipi_dsi_attach(dsi);  in s6e88a0_ams452ef01_probe()
231 		dev_err(dev, "Failed to attach to DSI host: %d\n", ret);  in s6e88a0_ams452ef01_probe()
232 		drm_panel_remove(&ctx->panel);  in s6e88a0_ams452ef01_probe()
239 static void s6e88a0_ams452ef01_remove(struct mipi_dsi_device *dsi)  in s6e88a0_ams452ef01_remove()  argument
241 	struct s6e88a0_ams452ef01 *ctx = mipi_dsi_get_drvdata(dsi);  in s6e88a0_ams452ef01_remove()
244 	ret = mipi_dsi_detach(dsi);  in s6e88a0_ams452ef01_remove()
246 		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);  in s6e88a0_ams452ef01_remove()
248 	drm_panel_remove(&ctx->panel);  in s6e88a0_ams452ef01_remove()
252 	{ .compatible = "samsung,s6e88a0-ams452ef01" },
261 		.name = "panel-s6e88a0-ams452ef01",
268 MODULE_DESCRIPTION("MIPI-DSI based Panel Driver for AMS452EF01 AMOLED LCD with a S6E88A0 controller…