349 static int ili9322_init(struct drm_panel *panel, struct ili9322 *ili)  in ili9322_init()  argument
356 	ret = regmap_write(ili->regmap, ILI9322_GLOBAL_RESET,  in ili9322_init()
359 		dev_err(ili->dev, "can't issue GRESET (%d)\n", ret);  in ili9322_init()
364 	if (ili->vreg1out != U8_MAX) {  in ili9322_init()
365 		ret = regmap_write(ili->regmap, ILI9322_VREG1_VOLTAGE,  in ili9322_init()
366 				   ili->vreg1out);  in ili9322_init()
368 			dev_err(ili->dev, "can't set up VREG1OUT (%d)\n", ret);  in ili9322_init()
373 	if (ili->vcom_amplitude != U8_MAX) {  in ili9322_init()
374 		ret = regmap_write(ili->regmap, ILI9322_VCOM_AMP,  in ili9322_init()
375 				   ili->vcom_amplitude);  in ili9322_init()
377 			dev_err(ili->dev,  in ili9322_init()
383 	if (ili->vcom_high != U8_MAX) {  in ili9322_init()
384 		ret = regmap_write(ili->regmap, ILI9322_VCOM_HIGH,  in ili9322_init()
385 				   ili->vcom_high);  in ili9322_init()
387 			dev_err(ili->dev, "can't set up VCOM high (%d)\n", ret);  in ili9322_init()
393 	for (i = 0; i < ARRAY_SIZE(ili->gamma); i++) {  in ili9322_init()
394 		ret = regmap_write(ili->regmap, ILI9322_GAMMA_1 + i,  in ili9322_init()
395 				   ili->gamma[i]);  in ili9322_init()
397 			dev_err(ili->dev,  in ili9322_init()
409 	if (ili->conf->dclk_active_high)  in ili9322_init()
411 	if (ili->conf->de_active_high)  in ili9322_init()
413 	if (ili->conf->hsync_active_high)  in ili9322_init()
415 	if (ili->conf->vsync_active_high)  in ili9322_init()
417 	ret = regmap_write(ili->regmap, ILI9322_POL, reg);  in ili9322_init()
419 		dev_err(ili->dev, "can't write POL register (%d)\n", ret);  in ili9322_init()
427 	reg = ili->conf->syncmode;  in ili9322_init()
429 	ret = regmap_write(ili->regmap, ILI9322_IF_CTRL, reg);  in ili9322_init()
431 		dev_err(ili->dev, "can't write IF CTRL register (%d)\n", ret);  in ili9322_init()
436 	reg = (ili->input << 4);  in ili9322_init()
438 	if (!ili->conf->flip_horizontal)  in ili9322_init()
440 	if (!ili->conf->flip_vertical)  in ili9322_init()
443 	ret = regmap_write(ili->regmap, ILI9322_ENTRY, reg);  in ili9322_init()
445 		dev_err(ili->dev, "can't write ENTRY reg (%d)\n", ret);  in ili9322_init()
448 	dev_info(ili->dev, "display is in %s mode, syncmode %02x\n",  in ili9322_init()
449 		 ili9322_inputs[ili->input],  in ili9322_init()
450 		 ili->conf->syncmode);  in ili9322_init()
452 	dev_info(ili->dev, "initialized display\n");  in ili9322_init()
460 static int ili9322_power_on(struct ili9322 *ili)  in ili9322_power_on()  argument
465 	gpiod_set_value(ili->reset_gpio, 1);  in ili9322_power_on()
467 	ret = regulator_bulk_enable(ARRAY_SIZE(ili->supplies), ili->supplies);  in ili9322_power_on()
469 		dev_err(ili->dev, "unable to enable regulators\n");  in ili9322_power_on()
475 	gpiod_set_value(ili->reset_gpio, 0);  in ili9322_power_on()
482 static int ili9322_power_off(struct ili9322 *ili)  in ili9322_power_off()  argument
484 	return regulator_bulk_disable(ARRAY_SIZE(ili->supplies), ili->supplies);  in ili9322_power_off()
489 	struct ili9322 *ili = panel_to_ili9322(panel);  in ili9322_disable()  local
492 	ret = regmap_write(ili->regmap, ILI9322_POW_CTRL,  in ili9322_disable()
495 		dev_err(ili->dev, "unable to go to standby mode\n");  in ili9322_disable()
504 	struct ili9322 *ili = panel_to_ili9322(panel);  in ili9322_unprepare()  local
506 	return ili9322_power_off(ili);  in ili9322_unprepare()
511 	struct ili9322 *ili = panel_to_ili9322(panel);  in ili9322_prepare()  local
514 	ret = ili9322_power_on(ili);  in ili9322_prepare()
518 	ret = ili9322_init(panel, ili);  in ili9322_prepare()
527 	struct ili9322 *ili = panel_to_ili9322(panel);  in ili9322_enable()  local
530 	ret = regmap_write(ili->regmap, ILI9322_POW_CTRL,  in ili9322_enable()
533 		dev_err(ili->dev, "unable to enable panel\n");  in ili9322_enable()
639 	struct ili9322 *ili = panel_to_ili9322(panel);  in ili9322_get_modes()  local
645 	info->width_mm = ili->conf->width_mm;  in ili9322_get_modes()
646 	info->height_mm = ili->conf->height_mm;  in ili9322_get_modes()
647 	if (ili->conf->dclk_active_high)  in ili9322_get_modes()
652 	if (ili->conf->de_active_high)  in ili9322_get_modes()
657 	switch (ili->input) {  in ili9322_get_modes()
696 	if (ili->conf->hsync_active_high)  in ili9322_get_modes()
700 	if (ili->conf->vsync_active_high)  in ili9322_get_modes()
705 	mode->width_mm = ili->conf->width_mm;  in ili9322_get_modes()
706 	mode->height_mm = ili->conf->height_mm;  in ili9322_get_modes()
723 	struct ili9322 *ili;  in ili9322_probe()  local
730 	ili = devm_kzalloc(dev, sizeof(struct ili9322), GFP_KERNEL);  in ili9322_probe()
731 	if (!ili)  in ili9322_probe()
734 	spi_set_drvdata(spi, ili);  in ili9322_probe()
736 	ili->dev = dev;  in ili9322_probe()
742 	ili->conf = of_device_get_match_data(dev);  in ili9322_probe()
743 	if (!ili->conf) {  in ili9322_probe()
748 	val = ili->conf->vreg1out_mv;  in ili9322_probe()
751 		ili->vreg1out = U8_MAX;  in ili9322_probe()
768 		ili->vreg1out = val;  in ili9322_probe()
771 	val = ili->conf->vcom_high_percent;  in ili9322_probe()
774 		ili->vcom_high = U8_MAX;  in ili9322_probe()
786 		ili->vcom_high = val;  in ili9322_probe()
789 	val = ili->conf->vcom_amplitude_percent;  in ili9322_probe()
792 		ili->vcom_high = U8_MAX;  in ili9322_probe()
805 		ili->vcom_amplitude = val;  in ili9322_probe()
808 	for (i = 0; i < ARRAY_SIZE(ili->gamma); i++) {  in ili9322_probe()
809 		val = ili->conf->gamma_corr_neg[i];  in ili9322_probe()
815 		val = ili->conf->gamma_corr_pos[i];  in ili9322_probe()
821 		ili->gamma[i] = gamma;  in ili9322_probe()
825 	ili->supplies[0].supply = "vcc"; /* 2.7-3.6 V */  in ili9322_probe()
826 	ili->supplies[1].supply = "iovcc"; /* 1.65-3.6V */  in ili9322_probe()
827 	ili->supplies[2].supply = "vci"; /* 2.7-3.6V */  in ili9322_probe()
828 	ret = devm_regulator_bulk_get(dev, ARRAY_SIZE(ili->supplies),  in ili9322_probe()
829 				      ili->supplies);  in ili9322_probe()
832 	ret = regulator_set_voltage(ili->supplies[0].consumer,  in ili9322_probe()
836 	ret = regulator_set_voltage(ili->supplies[1].consumer,  in ili9322_probe()
840 	ret = regulator_set_voltage(ili->supplies[2].consumer,  in ili9322_probe()
845 	ili->reset_gpio = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_HIGH);  in ili9322_probe()
846 	if (IS_ERR(ili->reset_gpio)) {  in ili9322_probe()
848 		return PTR_ERR(ili->reset_gpio);  in ili9322_probe()
858 	ili->regmap = devm_regmap_init(dev, &ili9322_regmap_bus, dev,  in ili9322_probe()
860 	if (IS_ERR(ili->regmap)) {  in ili9322_probe()
862 		return PTR_ERR(ili->regmap);  in ili9322_probe()
865 	ret = regmap_read(ili->regmap, ILI9322_CHIP_ID, &val);  in ili9322_probe()
877 	if (ili->conf->input == ILI9322_INPUT_UNKNOWN) {  in ili9322_probe()
878 		ret = regmap_read(ili->regmap, ILI9322_ENTRY, &val);  in ili9322_probe()
884 		ili->input = (val >> 4) & 0x0f;  in ili9322_probe()
885 		if (ili->input >= ILI9322_INPUT_UNKNOWN)  in ili9322_probe()
886 			ili->input = ILI9322_INPUT_UNKNOWN;  in ili9322_probe()
888 		ili->input = ili->conf->input;  in ili9322_probe()
891 	drm_panel_init(&ili->panel, dev, &ili9322_drm_funcs,  in ili9322_probe()
894 	drm_panel_add(&ili->panel);  in ili9322_probe()
901 	struct ili9322 *ili = spi_get_drvdata(spi);  in ili9322_remove()  local
903 	ili9322_power_off(ili);  in ili9322_remove()
904 	drm_panel_remove(&ili->panel);  in ili9322_remove()