57 static void ld9040_regulator_enable(struct ld9040 *lcd)  in ld9040_regulator_enable()  argument
62 	pd = lcd->lcd_pd;  in ld9040_regulator_enable()
63 	mutex_lock(&lcd->lock);  in ld9040_regulator_enable()
64 	if (!lcd->enabled) {  in ld9040_regulator_enable()
69 		lcd->enabled = true;  in ld9040_regulator_enable()
73 	mutex_unlock(&lcd->lock);  in ld9040_regulator_enable()
76 static void ld9040_regulator_disable(struct ld9040 *lcd)  in ld9040_regulator_disable()  argument
80 	mutex_lock(&lcd->lock);  in ld9040_regulator_disable()
81 	if (lcd->enabled) {  in ld9040_regulator_disable()
86 		lcd->enabled = false;  in ld9040_regulator_disable()
89 	mutex_unlock(&lcd->lock);  in ld9040_regulator_disable()
426 static int ld9040_spi_write_byte(struct ld9040 *lcd, int addr, int data)  in ld9040_spi_write_byte()  argument
441 	return spi_sync(lcd->spi, &msg);  in ld9040_spi_write_byte()
444 static int ld9040_spi_write(struct ld9040 *lcd, unsigned char address,  in ld9040_spi_write()  argument
450 		ret = ld9040_spi_write_byte(lcd, 0x0, address);  in ld9040_spi_write()
452 		ret = ld9040_spi_write_byte(lcd, 0x1, command);  in ld9040_spi_write()
457 static int ld9040_panel_send_sequence(struct ld9040 *lcd,  in ld9040_panel_send_sequence()  argument
464 			ret = ld9040_spi_write(lcd, wbuf[i], wbuf[i+1]);  in ld9040_panel_send_sequence()
476 static int _ld9040_gamma_ctl(struct ld9040 *lcd, const unsigned int *gamma)  in _ld9040_gamma_ctl()  argument
482 	ret = ld9040_panel_send_sequence(lcd, seq_gamma_start);  in _ld9040_gamma_ctl()
484 		dev_err(lcd->dev, "failed to disable gamma table updating.\n");  in _ld9040_gamma_ctl()
489 		ret = ld9040_spi_write(lcd, DATA_ONLY, gamma[i]);  in _ld9040_gamma_ctl()
491 			dev_err(lcd->dev, "failed to set gamma table.\n");  in _ld9040_gamma_ctl()
497 	ret = ld9040_panel_send_sequence(lcd, seq_gamma_ctrl);  in _ld9040_gamma_ctl()
499 		dev_err(lcd->dev, "failed to update gamma table.\n");  in _ld9040_gamma_ctl()
505 static int ld9040_gamma_ctl(struct ld9040 *lcd, int gamma)  in ld9040_gamma_ctl()  argument
507 	return _ld9040_gamma_ctl(lcd, gamma_table.gamma_22_table[gamma]);  in ld9040_gamma_ctl()
510 static int ld9040_ldi_init(struct ld9040 *lcd)  in ld9040_ldi_init()  argument
526 		ret = ld9040_panel_send_sequence(lcd, init_seq[i]);  in ld9040_ldi_init()
536 static int ld9040_ldi_enable(struct ld9040 *lcd)  in ld9040_ldi_enable()  argument
538 	return ld9040_panel_send_sequence(lcd, seq_display_on);  in ld9040_ldi_enable()
541 static int ld9040_ldi_disable(struct ld9040 *lcd)  in ld9040_ldi_disable()  argument
545 	ret = ld9040_panel_send_sequence(lcd, seq_display_off);  in ld9040_ldi_disable()
546 	ret = ld9040_panel_send_sequence(lcd, seq_sleep_in);  in ld9040_ldi_disable()
556 static int ld9040_power_on(struct ld9040 *lcd)  in ld9040_power_on()  argument
561 	pd = lcd->lcd_pd;  in ld9040_power_on()
564 	ld9040_regulator_enable(lcd);  in ld9040_power_on()
567 		dev_err(lcd->dev, "reset is NULL.\n");  in ld9040_power_on()
570 		pd->reset(lcd->ld);  in ld9040_power_on()
574 	ret = ld9040_ldi_init(lcd);  in ld9040_power_on()
576 		dev_err(lcd->dev, "failed to initialize ldi.\n");  in ld9040_power_on()
580 	ret = ld9040_ldi_enable(lcd);  in ld9040_power_on()
582 		dev_err(lcd->dev, "failed to enable ldi.\n");  in ld9040_power_on()
589 static int ld9040_power_off(struct ld9040 *lcd)  in ld9040_power_off()  argument
594 	pd = lcd->lcd_pd;  in ld9040_power_off()
596 	ret = ld9040_ldi_disable(lcd);  in ld9040_power_off()
598 		dev_err(lcd->dev, "lcd setting failed.\n");  in ld9040_power_off()
605 	ld9040_regulator_disable(lcd);  in ld9040_power_off()
610 static int ld9040_power(struct ld9040 *lcd, int power)  in ld9040_power()  argument
614 	if (ld9040_power_is_on(power) && !ld9040_power_is_on(lcd->power))  in ld9040_power()
615 		ret = ld9040_power_on(lcd);  in ld9040_power()
616 	else if (!ld9040_power_is_on(power) && ld9040_power_is_on(lcd->power))  in ld9040_power()
617 		ret = ld9040_power_off(lcd);  in ld9040_power()
620 		lcd->power = power;  in ld9040_power()
627 	struct ld9040 *lcd = lcd_get_data(ld);  in ld9040_set_power()  local
631 		dev_err(lcd->dev, "power value should be 0, 1 or 4.\n");  in ld9040_set_power()
635 	return ld9040_power(lcd, power);  in ld9040_set_power()
640 	struct ld9040 *lcd = lcd_get_data(ld);  in ld9040_get_power()  local
642 	return lcd->power;  in ld9040_get_power()
653 	struct ld9040 *lcd = bl_get_data(bd);  in ld9040_set_brightness()  local
662 	ret = ld9040_gamma_ctl(lcd, bd->props.brightness);  in ld9040_set_brightness()
684 	struct ld9040 *lcd = NULL;  in ld9040_probe()  local
689 	lcd = devm_kzalloc(&spi->dev, sizeof(struct ld9040), GFP_KERNEL);  in ld9040_probe()
690 	if (!lcd)  in ld9040_probe()
702 	lcd->spi = spi;  in ld9040_probe()
703 	lcd->dev = &spi->dev;  in ld9040_probe()
705 	lcd->lcd_pd = spi->dev.platform_data;  in ld9040_probe()
706 	if (!lcd->lcd_pd) {  in ld9040_probe()
711 	mutex_init(&lcd->lock);  in ld9040_probe()
713 	ret = devm_regulator_bulk_get(lcd->dev, ARRAY_SIZE(supplies), supplies);  in ld9040_probe()
715 		dev_err(lcd->dev, "Failed to get regulators: %d\n", ret);  in ld9040_probe()
719 	ld = lcd_device_register("ld9040", &spi->dev, lcd, &ld9040_lcd_ops);  in ld9040_probe()
723 	lcd->ld = ld;  in ld9040_probe()
730 		lcd, &ld9040_backlight_ops, &props);  in ld9040_probe()
737 	lcd->bd = bd;  in ld9040_probe()
743 	if (!lcd->lcd_pd->lcd_enabled) {  in ld9040_probe()
749 		lcd->power = FB_BLANK_POWERDOWN;  in ld9040_probe()
751 		ld9040_power(lcd, FB_BLANK_UNBLANK);  in ld9040_probe()
753 		lcd->power = FB_BLANK_UNBLANK;  in ld9040_probe()
756 	spi_set_drvdata(spi, lcd);  in ld9040_probe()
762 	lcd_device_unregister(lcd->ld);  in ld9040_probe()
769 	struct ld9040 *lcd = spi_get_drvdata(spi);  in ld9040_remove()  local
771 	ld9040_power(lcd, FB_BLANK_POWERDOWN);  in ld9040_remove()
772 	backlight_device_unregister(lcd->bd);  in ld9040_remove()
773 	lcd_device_unregister(lcd->ld);  in ld9040_remove()
781 	struct ld9040 *lcd = dev_get_drvdata(dev);  in ld9040_suspend()  local
783 	dev_dbg(dev, "lcd->power = %d\n", lcd->power);  in ld9040_suspend()
789 	return ld9040_power(lcd, FB_BLANK_POWERDOWN);  in ld9040_suspend()
794 	struct ld9040 *lcd = dev_get_drvdata(dev);  in ld9040_resume()  local
796 	lcd->power = FB_BLANK_POWERDOWN;  in ld9040_resume()
798 	return ld9040_power(lcd, FB_BLANK_UNBLANK);  in ld9040_resume()
807 	struct ld9040 *lcd = spi_get_drvdata(spi);  in ld9040_shutdown()  local
809 	ld9040_power(lcd, FB_BLANK_POWERDOWN);  in ld9040_shutdown()