350 static int ili9322_init(struct drm_panel *panel, struct ili9322 *ili)  in ili9322_init()  argument
357 	ret = regmap_write(ili->regmap, ILI9322_GLOBAL_RESET,  in ili9322_init()
360 		dev_err(ili->dev, "can't issue GRESET (%d)\n", ret);  in ili9322_init()
365 	if (ili->vreg1out != U8_MAX) {  in ili9322_init()
366 		ret = regmap_write(ili->regmap, ILI9322_VREG1_VOLTAGE,  in ili9322_init()
367 				   ili->vreg1out);  in ili9322_init()
369 			dev_err(ili->dev, "can't set up VREG1OUT (%d)\n", ret);  in ili9322_init()
374 	if (ili->vcom_amplitude != U8_MAX) {  in ili9322_init()
375 		ret = regmap_write(ili->regmap, ILI9322_VCOM_AMP,  in ili9322_init()
376 				   ili->vcom_amplitude);  in ili9322_init()
378 			dev_err(ili->dev,  in ili9322_init()
384 	if (ili->vcom_high != U8_MAX) {  in ili9322_init()
385 		ret = regmap_write(ili->regmap, ILI9322_VCOM_HIGH,  in ili9322_init()
386 				   ili->vcom_high);  in ili9322_init()
388 			dev_err(ili->dev, "can't set up VCOM high (%d)\n", ret);  in ili9322_init()
394 	for (i = 0; i < ARRAY_SIZE(ili->gamma); i++) {  in ili9322_init()
395 		ret = regmap_write(ili->regmap, ILI9322_GAMMA_1 + i,  in ili9322_init()
396 				   ili->gamma[i]);  in ili9322_init()
398 			dev_err(ili->dev,  in ili9322_init()
410 	if (ili->conf->dclk_active_high)  in ili9322_init()
412 	if (ili->conf->de_active_high)  in ili9322_init()
414 	if (ili->conf->hsync_active_high)  in ili9322_init()
416 	if (ili->conf->vsync_active_high)  in ili9322_init()
418 	ret = regmap_write(ili->regmap, ILI9322_POL, reg);  in ili9322_init()
420 		dev_err(ili->dev, "can't write POL register (%d)\n", ret);  in ili9322_init()
428 	reg = ili->conf->syncmode;  in ili9322_init()
430 	ret = regmap_write(ili->regmap, ILI9322_IF_CTRL, reg);  in ili9322_init()
432 		dev_err(ili->dev, "can't write IF CTRL register (%d)\n", ret);  in ili9322_init()
437 	reg = (ili->input << 4);  in ili9322_init()
439 	if (!ili->conf->flip_horizontal)  in ili9322_init()
441 	if (!ili->conf->flip_vertical)  in ili9322_init()
444 	ret = regmap_write(ili->regmap, ILI9322_ENTRY, reg);  in ili9322_init()
446 		dev_err(ili->dev, "can't write ENTRY reg (%d)\n", ret);  in ili9322_init()
449 	dev_info(ili->dev, "display is in %s mode, syncmode %02x\n",  in ili9322_init()
450 		 ili9322_inputs[ili->input],  in ili9322_init()
451 		 ili->conf->syncmode);  in ili9322_init()
453 	dev_info(ili->dev, "initialized display\n");  in ili9322_init()
461 static int ili9322_power_on(struct ili9322 *ili)  in ili9322_power_on()  argument
466 	gpiod_set_value(ili->reset_gpio, 1);  in ili9322_power_on()
468 	ret = regulator_bulk_enable(ARRAY_SIZE(ili->supplies), ili->supplies);  in ili9322_power_on()
470 		dev_err(ili->dev, "unable to enable regulators\n");  in ili9322_power_on()
476 	gpiod_set_value(ili->reset_gpio, 0);  in ili9322_power_on()
483 static int ili9322_power_off(struct ili9322 *ili)  in ili9322_power_off()  argument
485 	return regulator_bulk_disable(ARRAY_SIZE(ili->supplies), ili->supplies);  in ili9322_power_off()
490 	struct ili9322 *ili = panel_to_ili9322(panel);  in ili9322_disable()  local
493 	ret = regmap_write(ili->regmap, ILI9322_POW_CTRL,  in ili9322_disable()
496 		dev_err(ili->dev, "unable to go to standby mode\n");  in ili9322_disable()
505 	struct ili9322 *ili = panel_to_ili9322(panel);  in ili9322_unprepare()  local
507 	return ili9322_power_off(ili);  in ili9322_unprepare()
512 	struct ili9322 *ili = panel_to_ili9322(panel);  in ili9322_prepare()  local
515 	ret = ili9322_power_on(ili);  in ili9322_prepare()
519 	ret = ili9322_init(panel, ili);  in ili9322_prepare()
528 	struct ili9322 *ili = panel_to_ili9322(panel);  in ili9322_enable()  local
531 	ret = regmap_write(ili->regmap, ILI9322_POW_CTRL,  in ili9322_enable()
534 		dev_err(ili->dev, "unable to enable panel\n");  in ili9322_enable()
640 	struct ili9322 *ili = panel_to_ili9322(panel);  in ili9322_get_modes()  local
646 	info->width_mm = ili->conf->width_mm;  in ili9322_get_modes()
647 	info->height_mm = ili->conf->height_mm;  in ili9322_get_modes()
648 	if (ili->conf->dclk_active_high)  in ili9322_get_modes()
653 	if (ili->conf->de_active_high)  in ili9322_get_modes()
658 	switch (ili->input) {  in ili9322_get_modes()
697 	if (ili->conf->hsync_active_high)  in ili9322_get_modes()
701 	if (ili->conf->vsync_active_high)  in ili9322_get_modes()
706 	mode->width_mm = ili->conf->width_mm;  in ili9322_get_modes()
707 	mode->height_mm = ili->conf->height_mm;  in ili9322_get_modes()
724 	struct ili9322 *ili;  in ili9322_probe()  local
731 	ili = devm_kzalloc(dev, sizeof(struct ili9322), GFP_KERNEL);  in ili9322_probe()
732 	if (!ili)  in ili9322_probe()
735 	spi_set_drvdata(spi, ili);  in ili9322_probe()
737 	ili->dev = dev;  in ili9322_probe()
743 	ili->conf = of_device_get_match_data(dev);  in ili9322_probe()
744 	if (!ili->conf) {  in ili9322_probe()
749 	val = ili->conf->vreg1out_mv;  in ili9322_probe()
752 		ili->vreg1out = U8_MAX;  in ili9322_probe()
769 		ili->vreg1out = val;  in ili9322_probe()
772 	val = ili->conf->vcom_high_percent;  in ili9322_probe()
775 		ili->vcom_high = U8_MAX;  in ili9322_probe()
787 		ili->vcom_high = val;  in ili9322_probe()
790 	val = ili->conf->vcom_amplitude_percent;  in ili9322_probe()
793 		ili->vcom_high = U8_MAX;  in ili9322_probe()
806 		ili->vcom_amplitude = val;  in ili9322_probe()
809 	for (i = 0; i < ARRAY_SIZE(ili->gamma); i++) {  in ili9322_probe()
810 		val = ili->conf->gamma_corr_neg[i];  in ili9322_probe()
816 		val = ili->conf->gamma_corr_pos[i];  in ili9322_probe()
822 		ili->gamma[i] = gamma;  in ili9322_probe()
826 	ili->supplies[0].supply = "vcc"; /* 2.7-3.6 V */  in ili9322_probe()
827 	ili->supplies[1].supply = "iovcc"; /* 1.65-3.6V */  in ili9322_probe()
828 	ili->supplies[2].supply = "vci"; /* 2.7-3.6V */  in ili9322_probe()
829 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ili->supplies),  in ili9322_probe()
830 				      ili->supplies);  in ili9322_probe()
833 	ret = regulator_set_voltage(ili->supplies[0].consumer,  in ili9322_probe()
837 	ret = regulator_set_voltage(ili->supplies[1].consumer,  in ili9322_probe()
841 	ret = regulator_set_voltage(ili->supplies[2].consumer,  in ili9322_probe()
846 	ili->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);  in ili9322_probe()
847 	if (IS_ERR(ili->reset_gpio)) {  in ili9322_probe()
849 		return PTR_ERR(ili->reset_gpio);  in ili9322_probe()
859 	ili->regmap = devm_regmap_init(dev, &ili9322_regmap_bus, dev,  in ili9322_probe()
861 	if (IS_ERR(ili->regmap)) {  in ili9322_probe()
863 		return PTR_ERR(ili->regmap);  in ili9322_probe()
866 	ret = regmap_read(ili->regmap, ILI9322_CHIP_ID, &val);  in ili9322_probe()
878 	if (ili->conf->input == ILI9322_INPUT_UNKNOWN) {  in ili9322_probe()
879 		ret = regmap_read(ili->regmap, ILI9322_ENTRY, &val);  in ili9322_probe()
885 		ili->input = (val >> 4) & 0x0f;  in ili9322_probe()
886 		if (ili->input >= ILI9322_INPUT_UNKNOWN)  in ili9322_probe()
887 			ili->input = ILI9322_INPUT_UNKNOWN;  in ili9322_probe()
889 		ili->input = ili->conf->input;  in ili9322_probe()
892 	drm_panel_init(&ili->panel, dev, &ili9322_drm_funcs,  in ili9322_probe()
895 	drm_panel_add(&ili->panel);  in ili9322_probe()
902 	struct ili9322 *ili = spi_get_drvdata(spi);  in ili9322_remove()  local
904 	ili9322_power_off(ili);  in ili9322_remove()
905 	drm_panel_remove(&ili->panel);  in ili9322_remove()