1 // SPDX-License-Identifier: GPL-2.0
5  * - Rocktech jh057n00900 5.5" MIPI-DSI panel
13 #include <linux/media-bus-format.h>
26 #define DRV_NAME "panel-sitronix-st7703"
56 	struct regulator *iovcc;  member
86 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in jh057n_init_sequence()
176 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in xbd599_init_sequence()
226 	/* NVDDD_SEL = -1.8V, VDDD_SEL = out of range (possibly 1.9V?) */  in xbd599_init_sequence()
235 	/* Zig-Zag Type C column inversion. */  in xbd599_init_sequence()
263 			  0x10  /* SLPIN_OPTION = 1 (no need vsync after sleep-in)  in xbd599_init_sequence()
273 			  0x74, /* VBTHS, VBTLS: VGH = 17V, VBL = -11V */  in xbd599_init_sequence()
296 			  0x2C, /* VCOMDC_F = -0.67V */  in xbd599_init_sequence()
297 			  0x2C  /* VCOMDC_B = -0.67V */);  in xbd599_init_sequence()
361 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in st7703_enable()
364 	ret = ctx->desc->init_sequence(ctx);  in st7703_enable()
366 		dev_err(ctx->dev, "Panel init sequence failed: %d\n", ret);  in st7703_enable()
374 		dev_err(ctx->dev, "Failed to exit sleep mode: %d\n", ret);  in st7703_enable()
385 	dev_dbg(ctx->dev, "Panel init sequence done\n");  in st7703_enable()
393 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in st7703_disable()
398 		dev_err(ctx->dev, "Failed to turn off the display: %d\n", ret);  in st7703_disable()
402 		dev_err(ctx->dev, "Failed to enter sleep mode: %d\n", ret);  in st7703_disable()
411 	if (!ctx->prepared)  in st7703_unprepare()
414 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in st7703_unprepare()
415 	regulator_disable(ctx->iovcc);  in st7703_unprepare()
416 	regulator_disable(ctx->vcc);  in st7703_unprepare()
417 	ctx->prepared = false;  in st7703_unprepare()
427 	if (ctx->prepared)  in st7703_prepare()
430 	dev_dbg(ctx->dev, "Resetting the panel\n");  in st7703_prepare()
431 	ret = regulator_enable(ctx->vcc);  in st7703_prepare()
433 		dev_err(ctx->dev, "Failed to enable vcc supply: %d\n", ret);  in st7703_prepare()
436 	ret = regulator_enable(ctx->iovcc);  in st7703_prepare()
438 		dev_err(ctx->dev, "Failed to enable iovcc supply: %d\n", ret);  in st7703_prepare()
442 	gpiod_set_value_cansleep(ctx->reset_gpio, 1);  in st7703_prepare()
444 	gpiod_set_value_cansleep(ctx->reset_gpio, 0);  in st7703_prepare()
447 	ctx->prepared = true;  in st7703_prepare()
452 	regulator_disable(ctx->vcc);  in st7703_prepare()
462 	mode = drm_mode_duplicate(connector->dev, ctx->desc->mode);  in st7703_get_modes()
464 		dev_err(ctx->dev, "Failed to add mode %ux%u@%u\n",  in st7703_get_modes()
465 			ctx->desc->mode->hdisplay, ctx->desc->mode->vdisplay,  in st7703_get_modes()
466 			drm_mode_vrefresh(ctx->desc->mode));  in st7703_get_modes()
467 		return -ENOMEM;  in st7703_get_modes()
472 	mode->type = DRM_MODE_TYPE_DRIVER | DRM_MODE_TYPE_PREFERRED;  in st7703_get_modes()
473 	connector->display_info.width_mm = mode->width_mm;  in st7703_get_modes()
474 	connector->display_info.height_mm = mode->height_mm;  in st7703_get_modes()
491 	struct mipi_dsi_device *dsi = to_mipi_dsi_device(ctx->dev);  in allpixelson_set()
493 	dev_dbg(ctx->dev, "Setting all pixels on\n");  in allpixelson_set()
497 	drm_panel_disable(&ctx->panel);  in allpixelson_set()
498 	drm_panel_unprepare(&ctx->panel);  in allpixelson_set()
499 	drm_panel_prepare(&ctx->panel);  in allpixelson_set()
500 	drm_panel_enable(&ctx->panel);  in allpixelson_set()
510 	ctx->debugfs = debugfs_create_dir(DRV_NAME, NULL);  in st7703_debugfs_init()
512 	debugfs_create_file("allpixelson", 0600, ctx->debugfs, ctx,  in st7703_debugfs_init()
518 	debugfs_remove_recursive(ctx->debugfs);  in st7703_debugfs_remove()
519 	ctx->debugfs = NULL;  in st7703_debugfs_remove()
524 	struct device *dev = &dsi->dev;  in st7703_probe()
530 		return -ENOMEM;  in st7703_probe()
532 	ctx->reset_gpio = devm_gpiod_get(dev, "reset", GPIOD_OUT_LOW);  in st7703_probe()
533 	if (IS_ERR(ctx->reset_gpio))  in st7703_probe()
534 		return dev_err_probe(dev, PTR_ERR(ctx->reset_gpio), "Failed to get reset gpio\n");  in st7703_probe()
538 	ctx->dev = dev;  in st7703_probe()
539 	ctx->desc = of_device_get_match_data(dev);  in st7703_probe()
541 	dsi->mode_flags = ctx->desc->mode_flags;  in st7703_probe()
542 	dsi->format = ctx->desc->format;  in st7703_probe()
543 	dsi->lanes = ctx->desc->lanes;  in st7703_probe()
545 	ctx->vcc = devm_regulator_get(dev, "vcc");  in st7703_probe()
546 	if (IS_ERR(ctx->vcc))  in st7703_probe()
547 		return dev_err_probe(dev, PTR_ERR(ctx->vcc), "Failed to request vcc regulator\n");  in st7703_probe()
549 	ctx->iovcc = devm_regulator_get(dev, "iovcc");  in st7703_probe()
550 	if (IS_ERR(ctx->iovcc))  in st7703_probe()
551 		return dev_err_probe(dev, PTR_ERR(ctx->iovcc),  in st7703_probe()
552 				     "Failed to request iovcc regulator\n");  in st7703_probe()
554 	drm_panel_init(&ctx->panel, dev, &st7703_drm_funcs,  in st7703_probe()
557 	ret = drm_panel_of_backlight(&ctx->panel);  in st7703_probe()
561 	drm_panel_add(&ctx->panel);  in st7703_probe()
566 		drm_panel_remove(&ctx->panel);  in st7703_probe()
570 	dev_info(dev, "%ux%u@%u %ubpp dsi %udl - ready\n",  in st7703_probe()
571 		 ctx->desc->mode->hdisplay, ctx->desc->mode->vdisplay,  in st7703_probe()
572 		 drm_mode_vrefresh(ctx->desc->mode),  in st7703_probe()
573 		 mipi_dsi_pixel_format_to_bpp(dsi->format), dsi->lanes);  in st7703_probe()
584 	ret = drm_panel_unprepare(&ctx->panel);  in st7703_shutdown()
586 		dev_err(&dsi->dev, "Failed to unprepare panel: %d\n", ret);  in st7703_shutdown()
588 	ret = drm_panel_disable(&ctx->panel);  in st7703_shutdown()
590 		dev_err(&dsi->dev, "Failed to disable panel: %d\n", ret);  in st7703_shutdown()
602 		dev_err(&dsi->dev, "Failed to detach from DSI host: %d\n", ret);  in st7703_remove()
604 	drm_panel_remove(&ctx->panel);  in st7703_remove()