1 // SPDX-License-Identifier: GPL-2.0+
5  * base on panel-kingdisplay-kd097d04.c
40 	struct regulator *vcc;  member
52 	{ 0x80, 0x03 }, /* 0X03:4-LANE; 0X02:3-LANE; 0X01:2-LANE */
67 	{ 0x20, 0x28 }, /* VGL_R  = -12V */
68 	{ 0x21, 0x28 }, /* VGL_R2 = -12V */
83 	{ 0x41, 0xA0 }, /* LN = 640->1280 line */
91 	{ 0x59, 0x0A }, /* VCL = -2.9V */
93 	{ 0x5B, 0x14 }, /* VGL = -11V */
491 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in ltk500hd1829_unprepare()  local
494 	ret = mipi_dsi_dcs_set_display_off(dsi);  in ltk500hd1829_unprepare()
496 		dev_err(panel->dev, "failed to set display off: %d\n", ret);  in ltk500hd1829_unprepare()
498 	ret = mipi_dsi_dcs_enter_sleep_mode(dsi);  in ltk500hd1829_unprepare()
500 		dev_err(panel->dev, "failed to enter sleep mode: %d\n", ret);  in ltk500hd1829_unprepare()
506 	regulator_disable(ctx->iovcc);  in ltk500hd1829_unprepare()
507 	regulator_disable(ctx->vcc);  in ltk500hd1829_unprepare()
515 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in ltk500hd1829_prepare()  local
519 	ret = regulator_enable(ctx->vcc);  in ltk500hd1829_prepare()
521 		dev_err(ctx->dev, "Failed to enable vci supply: %d\n", ret);  in ltk500hd1829_prepare()
524 	ret = regulator_enable(ctx->iovcc);  in ltk500hd1829_prepare()
526 		dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n", ret);  in ltk500hd1829_prepare()
530 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in ltk500hd1829_prepare()
533 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in ltk500hd1829_prepare()
538 	for (i = 0; i < ctx->panel_desc->num_init; i++) {  in ltk500hd1829_prepare()
539 		ret = mipi_dsi_generic_write(dsi, &ctx->panel_desc->init[i],  in ltk500hd1829_prepare()
542 			dev_err(panel->dev, "failed to write init cmds: %d\n", ret);  in ltk500hd1829_prepare()
547 	ret = mipi_dsi_dcs_exit_sleep_mode(dsi);  in ltk500hd1829_prepare()
549 		dev_err(panel->dev, "failed to exit sleep mode: %d\n", ret);  in ltk500hd1829_prepare()
556 	ret = mipi_dsi_dcs_set_display_on(dsi);  in ltk500hd1829_prepare()
558 		dev_err(panel->dev, "failed to set display on: %d\n", ret);  in ltk500hd1829_prepare()
565 	regulator_disable(ctx->iovcc);  in ltk500hd1829_prepare()
567 	regulator_disable(ctx->vcc);  in ltk500hd1829_prepare()
577 	mode = drm_mode_duplicate(connector->dev, ctx->panel_desc->mode);  in ltk500hd1829_get_modes()
579 		dev_err(ctx->dev, "failed to add mode %ux%u@%u\n",  in ltk500hd1829_get_modes()
580 			ctx->panel_desc->mode->hdisplay, ctx->panel_desc->mode->vdisplay,  in ltk500hd1829_get_modes()
581 			drm_mode_vrefresh(ctx->panel_desc->mode));  in ltk500hd1829_get_modes()
582 		return -ENOMEM;  in ltk500hd1829_get_modes()
587 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in ltk500hd1829_get_modes()
588 	connector->display_info.width_mm = mode->width_mm;  in ltk500hd1829_get_modes()
589 	connector->display_info.height_mm = mode->height_mm;  in ltk500hd1829_get_modes()
601 static int ltk500hd1829_probe(struct mipi_dsi_device *dsi)  in ltk500hd1829_probe()  argument
604 	struct device *dev = &dsi->dev;  in ltk500hd1829_probe()
607 	ctx = devm_kzalloc(&dsi->dev, sizeof(*ctx), GFP_KERNEL);  in ltk500hd1829_probe()
609 		return -ENOMEM;  in ltk500hd1829_probe()
611 	ctx->panel_desc = of_device_get_match_data(dev);  in ltk500hd1829_probe()
612 	if (!ctx->panel_desc)  in ltk500hd1829_probe()
613 		return -EINVAL;  in ltk500hd1829_probe()
615 	ctx->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW);  in ltk500hd1829_probe()
616 	if (IS_ERR(ctx->reset_gpio)) {  in ltk500hd1829_probe()
618 		return PTR_ERR(ctx->reset_gpio);  in ltk500hd1829_probe()
621 	ctx->vcc = devm_regulator_get(dev, "vcc");  in ltk500hd1829_probe()
622 	if (IS_ERR(ctx->vcc)) {  in ltk500hd1829_probe()
623 		ret = PTR_ERR(ctx->vcc);  in ltk500hd1829_probe()
624 		if (ret != -EPROBE_DEFER)  in ltk500hd1829_probe()
625 			dev_err(dev, "Failed to request vcc regulator: %d\n", ret);  in ltk500hd1829_probe()
629 	ctx->iovcc = devm_regulator_get(dev, "iovcc");  in ltk500hd1829_probe()
630 	if (IS_ERR(ctx->iovcc)) {  in ltk500hd1829_probe()
631 		ret = PTR_ERR(ctx->iovcc);  in ltk500hd1829_probe()
632 		if (ret != -EPROBE_DEFER)  in ltk500hd1829_probe()
637 	mipi_dsi_set_drvdata(dsi, ctx);  in ltk500hd1829_probe()
639 	ctx->dev = dev;  in ltk500hd1829_probe()
641 	dsi->lanes = 4;  in ltk500hd1829_probe()
642 	dsi->format = MIPI_DSI_FMT_RGB888;  in ltk500hd1829_probe()
643 	dsi->mode_flags = MIPI_DSI_MODE_VIDEO | MIPI_DSI_MODE_VIDEO_BURST |  in ltk500hd1829_probe()
646 	drm_panel_init(&ctx->panel, &dsi->dev, &ltk500hd1829_funcs,  in ltk500hd1829_probe()
649 	ret = drm_panel_of_backlight(&ctx->panel);  in ltk500hd1829_probe()
653 	drm_panel_add(&ctx->panel);  in ltk500hd1829_probe()
655 	ret = mipi_dsi_attach(dsi);  in ltk500hd1829_probe()
658 		drm_panel_remove(&ctx->panel);  in ltk500hd1829_probe()
665 static void ltk500hd1829_remove(struct mipi_dsi_device *dsi)  in ltk500hd1829_remove()  argument
667 	struct ltk500hd1829 *ctx = mipi_dsi_get_drvdata(dsi);  in ltk500hd1829_remove()
670 	ret = mipi_dsi_detach(dsi);  in ltk500hd1829_remove()
672 		dev_err(&dsi->dev, "failed to detach from DSI host: %d\n", ret);  in ltk500hd1829_remove()
674 	drm_panel_remove(&ctx->panel);  in ltk500hd1829_remove()
692 		.name = "panel-leadtek-ltk500hd1829",
700 MODULE_AUTHOR("Heiko Stuebner <heiko.stuebner@theobroma-systems.com>");