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 */
833 static inline struct ili9881c *panel_to_ili9881c(struct drm_panel *panel)  in panel_to_ili9881c()  argument
835 	return container_of(panel, struct ili9881c, panel);  in panel_to_ili9881c()
839  * The panel seems to accept some private DCS commands that map
854 	ret = mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf));  in ili9881c_switch_page()
866 	ret = mipi_dsi_dcs_write_buffer(ctx->dsi, buf, sizeof(buf));  in ili9881c_send_cmd_data()
873 static int ili9881c_prepare(struct drm_panel *panel)  in ili9881c_prepare()  argument
875 	struct ili9881c *ctx = panel_to_ili9881c(panel);  in ili9881c_prepare()
879 	/* Power the panel */  in ili9881c_prepare()
880 	ret = regulator_enable(ctx->power);  in ili9881c_prepare()
886 	gpiod_set_value_cansleep(ctx->reset, 1);  in ili9881c_prepare()
889 	gpiod_set_value_cansleep(ctx->reset, 0);  in ili9881c_prepare()
892 	for (i = 0; i < ctx->desc->init_length; i++) {  in ili9881c_prepare()
893 		const struct ili9881c_instr *instr = &ctx->desc->init[i];  in ili9881c_prepare()
895 		if (instr->op == ILI9881C_SWITCH_PAGE)  in ili9881c_prepare()
896 			ret = ili9881c_switch_page(ctx, instr->arg.page);  in ili9881c_prepare()
897 		else if (instr->op == ILI9881C_COMMAND)  in ili9881c_prepare()
898 			ret = ili9881c_send_cmd_data(ctx, instr->arg.cmd.cmd,  in ili9881c_prepare()
899 						      instr->arg.cmd.data);  in ili9881c_prepare()
909 	ret = mipi_dsi_dcs_set_tear_on(ctx->dsi, MIPI_DSI_DCS_TEAR_MODE_VBLANK);  in ili9881c_prepare()
913 	ret = mipi_dsi_dcs_exit_sleep_mode(ctx->dsi);  in ili9881c_prepare()
920 static int ili9881c_enable(struct drm_panel *panel)  in ili9881c_enable()  argument
922 	struct ili9881c *ctx = panel_to_ili9881c(panel);  in ili9881c_enable()
926 	mipi_dsi_dcs_set_display_on(ctx->dsi);  in ili9881c_enable()
931 static int ili9881c_disable(struct drm_panel *panel)  in ili9881c_disable()  argument
933 	struct ili9881c *ctx = panel_to_ili9881c(panel);  in ili9881c_disable()
935 	return mipi_dsi_dcs_set_display_off(ctx->dsi);  in ili9881c_disable()
938 static int ili9881c_unprepare(struct drm_panel *panel)  in ili9881c_unprepare()  argument
940 	struct ili9881c *ctx = panel_to_ili9881c(panel);  in ili9881c_unprepare()
942 	mipi_dsi_dcs_enter_sleep_mode(ctx->dsi);  in ili9881c_unprepare()
943 	regulator_disable(ctx->power);  in ili9881c_unprepare()
944 	gpiod_set_value_cansleep(ctx->reset, 1);  in ili9881c_unprepare()
1017 static int ili9881c_get_modes(struct drm_panel *panel,  in ili9881c_get_modes()  argument
1020 	struct ili9881c *ctx = panel_to_ili9881c(panel);  in ili9881c_get_modes()
1023 	mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);  in ili9881c_get_modes()
1025 		dev_err(&ctx->dsi->dev, "failed to add mode %ux%ux@%u\n",  in ili9881c_get_modes()
1026 			ctx->desc->mode->hdisplay,  in ili9881c_get_modes()
1027 			ctx->desc->mode->vdisplay,  in ili9881c_get_modes()
1028 			drm_mode_vrefresh(ctx->desc->mode));  in ili9881c_get_modes()
1029 		return -ENOMEM;  in ili9881c_get_modes()
1034 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in ili9881c_get_modes()
1037 	connector->display_info.width_mm = mode->width_mm;  in ili9881c_get_modes()
1038 	connector->display_info.height_mm = mode->height_mm;  in ili9881c_get_modes()
1044 	drm_connector_set_panel_orientation(connector, ctx->orientation);  in ili9881c_get_modes()
1049 static enum drm_panel_orientation ili9881c_get_orientation(struct drm_panel *panel)  in ili9881c_get_orientation()  argument
1051 	struct ili9881c *ctx = panel_to_ili9881c(panel);  in ili9881c_get_orientation()
1053 	return ctx->orientation;  in ili9881c_get_orientation()
1070 	ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);  in ili9881c_dsi_probe()
1072 		return -ENOMEM;  in ili9881c_dsi_probe()
1074 	ctx->dsi = dsi;  in ili9881c_dsi_probe()
1075 	ctx->desc = of_device_get_match_data(&dsi->dev);  in ili9881c_dsi_probe()
1077 	drm_panel_init(&ctx->panel, &dsi->dev, &ili9881c_funcs,  in ili9881c_dsi_probe()
1080 	ctx->power = devm_regulator_get(&dsi->dev, "power");  in ili9881c_dsi_probe()
1081 	if (IS_ERR(ctx->power))  in ili9881c_dsi_probe()
1082 		return dev_err_probe(&dsi->dev, PTR_ERR(ctx->power),  in ili9881c_dsi_probe()
1085 	ctx->reset = devm_gpiod_get_optional(&dsi->dev, "reset", GPIOD_OUT_LOW);  in ili9881c_dsi_probe()
1086 	if (IS_ERR(ctx->reset))  in ili9881c_dsi_probe()
1087 		return dev_err_probe(&dsi->dev, PTR_ERR(ctx->reset),  in ili9881c_dsi_probe()
1090 	ret = of_drm_get_panel_orientation(dsi->dev.of_node, &ctx->orientation);  in ili9881c_dsi_probe()
1092 		dev_err(&dsi->dev, "%pOF: failed to get orientation: %d\n",  in ili9881c_dsi_probe()
1093 			dsi->dev.of_node, ret);  in ili9881c_dsi_probe()
1097 	ret = drm_panel_of_backlight(&ctx->panel);  in ili9881c_dsi_probe()
1101 	drm_panel_add(&ctx->panel);  in ili9881c_dsi_probe()
1103 	dsi->mode_flags = ctx->desc->mode_flags;  in ili9881c_dsi_probe()
1104 	dsi->format = MIPI_DSI_FMT_RGB888;  in ili9881c_dsi_probe()
1105 	dsi->lanes = 4;  in ili9881c_dsi_probe()
1115 	drm_panel_remove(&ctx->panel);  in ili9881c_dsi_remove()
1150 	{ .compatible = "feixin,k101-im2byl02", .data = &k101_im2byl02_desc },
1161 		.name		= "ili9881c-dsi",
1167 MODULE_AUTHOR("Maxime Ripard <maxime.ripard@free-electrons.com>");