1 // SPDX-License-Identifier: GPL-2.0
3  * Copyright (C) 2017-2018, Bootlin
29 	enum ili9881c_op	op;  member
48 	struct drm_panel	panel;  member
60 		.op = ILI9881C_SWITCH_PAGE,	\
68 		.op = ILI9881C_COMMAND,		\
398 	ILI9881C_COMMAND_INSTR(0x6F, 0x33), /* pumping ratio VGH=5x VGL=-3x */
399 	ILI9881C_COMMAND_INSTR(0x8D, 0x1B), /* VGL clamp -10V */
1030 static inline struct ili9881c *panel_to_ili9881c(struct drm_panel *panel)  in panel_to_ili9881c()  argument
1032 	return container_of(panel, struct ili9881c, panel);  in panel_to_ili9881c()
1036  * The panel seems to accept some private DCS commands that map
1051 	ret = mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf));  in ili9881c_switch_page()
1063 	ret = mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf));  in ili9881c_send_cmd_data()
1070 static int ili9881c_prepare(struct drm_panel *panel)  in ili9881c_prepare()  argument
1072 	struct ili9881c *ctx = panel_to_ili9881c(panel);  in ili9881c_prepare()
1076 	/* Power the panel */  in ili9881c_prepare()
1077 	ret = regulator_enable(ctx->power);  in ili9881c_prepare()
1083 	gpiod_set_value(ctx->reset, 1);  in ili9881c_prepare()
1086 	gpiod_set_value(ctx->reset, 0);  in ili9881c_prepare()
1089 	for (i = 0; i < ctx->desc->init_length; i++) {  in ili9881c_prepare()
1090 		const struct ili9881c_instr *instr = &ctx->desc->init[i];  in ili9881c_prepare()
1092 		if (instr->op == ILI9881C_SWITCH_PAGE)  in ili9881c_prepare()
1093 			ret = ili9881c_switch_page(ctx, instr->arg.page);  in ili9881c_prepare()
1094 		else if (instr->op == ILI9881C_COMMAND)  in ili9881c_prepare()
1095 			ret = ili9881c_send_cmd_data(ctx, instr->arg.cmd.cmd,  in ili9881c_prepare()
1096 						      instr->arg.cmd.data);  in ili9881c_prepare()
1106 	ret = mipi_dsi_dcs_set_tear_on(ctx->dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);  in ili9881c_prepare()
1110 	ret = mipi_dsi_dcs_exit_sleep_mode(ctx->dsi);  in ili9881c_prepare()
1117 static int ili9881c_enable(struct drm_panel *panel)  in ili9881c_enable()  argument
1119 	struct ili9881c *ctx = panel_to_ili9881c(panel);  in ili9881c_enable()
1123 	mipi_dsi_dcs_set_display_on(ctx->dsi);  in ili9881c_enable()
1128 static int ili9881c_disable(struct drm_panel *panel)  in ili9881c_disable()  argument
1130 	struct ili9881c *ctx = panel_to_ili9881c(panel);  in ili9881c_disable()
1132 	return mipi_dsi_dcs_set_display_off(ctx->dsi);  in ili9881c_disable()
1135 static int ili9881c_unprepare(struct drm_panel *panel)  in ili9881c_unprepare()  argument
1137 	struct ili9881c *ctx = panel_to_ili9881c(panel);  in ili9881c_unprepare()
1139 	mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);  in ili9881c_unprepare()
1140 	regulator_disable(ctx->power);  in ili9881c_unprepare()
1141 	gpiod_set_value(ctx->reset, 1);  in ili9881c_unprepare()
1231 static int ili9881c_get_modes(struct drm_panel *panel,  in ili9881c_get_modes()  argument
1234 	struct ili9881c *ctx = panel_to_ili9881c(panel);  in ili9881c_get_modes()
1237 	mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);  in ili9881c_get_modes()
1239 		dev_err(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n",  in ili9881c_get_modes()
1240 			ctx->desc->mode->hdisplay,  in ili9881c_get_modes()
1241 			ctx->desc->mode->vdisplay,  in ili9881c_get_modes()
1242 			drm_mode_vrefresh(ctx->desc->mode));  in ili9881c_get_modes()
1243 		return -ENOMEM;  in ili9881c_get_modes()
1248 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in ili9881c_get_modes()
1251 	connector->display_info.width_mm = mode->width_mm;  in ili9881c_get_modes()
1252 	connector->display_info.height_mm = mode->height_mm;  in ili9881c_get_modes()
1258 	drm_connector_set_panel_orientation(connector, ctx->orientation);  in ili9881c_get_modes()
1263 static enum drm_panel_orientation ili9881c_get_orientation(struct drm_panel *panel)  in ili9881c_get_orientation()  argument
1265 	struct ili9881c *ctx = panel_to_ili9881c(panel);  in ili9881c_get_orientation()
1267 	return ctx->orientation;  in ili9881c_get_orientation()
1284 	ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);  in ili9881c_dsi_probe()
1286 		return -ENOMEM;  in ili9881c_dsi_probe()
1288 	ctx->dsi = dsi;  in ili9881c_dsi_probe()
1289 	ctx->desc = of_device_get_match_data(&dsi->dev);  in ili9881c_dsi_probe()
1291 	drm_panel_init(&ctx->panel, &dsi->dev, &ili9881c_funcs,  in ili9881c_dsi_probe()
1294 	ctx->power = devm_regulator_get(&dsi->dev, "power");  in ili9881c_dsi_probe()
1295 	if (IS_ERR(ctx->power))  in ili9881c_dsi_probe()
1296 		return dev_err_probe(&dsi->dev, PTR_ERR(ctx->power),  in ili9881c_dsi_probe()
1299 	ctx->reset = devm_gpiod_get_optional(&dsi->dev, "reset", GPIOD_OUT_LOW);  in ili9881c_dsi_probe()
1300 	if (IS_ERR(ctx->reset))  in ili9881c_dsi_probe()
1301 		return dev_err_probe(&dsi->dev, PTR_ERR(ctx->reset),  in ili9881c_dsi_probe()
1304 	ret = of_drm_get_panel_orientation(dsi->dev.of_node, &ctx->orientation);  in ili9881c_dsi_probe()
1306 		dev_err(&dsi->dev, "%pOF: failed to get orientation: %d\n",  in ili9881c_dsi_probe()
1307 			dsi->dev.of_node, ret);  in ili9881c_dsi_probe()
1311 	ctx->panel.prepare_prev_first = true;  in ili9881c_dsi_probe()
1313 	ret = drm_panel_of_backlight(&ctx->panel);  in ili9881c_dsi_probe()
1317 	drm_panel_add(&ctx->panel);  in ili9881c_dsi_probe()
1319 	dsi->mode_flags = ctx->desc->mode_flags;  in ili9881c_dsi_probe()
1320 	dsi->format = MIPI_DSI_FMT_RGB888;  in ili9881c_dsi_probe()
1321 	dsi->lanes = 4;  in ili9881c_dsi_probe()
1331 	drm_panel_remove(&ctx->panel);  in ili9881c_dsi_remove()
1374 	{ .compatible = "feixin,k101-im2byl02", .data = &k101_im2byl02_desc },
1386 		.name		= "ili9881c-dsi",
1392 MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");