1 // SPDX-License-Identifier: GPL-2.0-or-later
36 	struct backlight_device		*bd;  member
172 	return spi_sync(lcd->spi, &msg);  in ams369fg06_spi_write_byte()
175 static int ams369fg06_spi_write(struct ams369fg06 *lcd, unsigned char address,  in ams369fg06_spi_write()  argument
180 	if (address != DATA_ONLY)  in ams369fg06_spi_write()
181 		ret = ams369fg06_spi_write_byte(lcd, 0x70, address);  in ams369fg06_spi_write()
218 			dev_err(lcd->dev, "failed to set gamma table.\n");  in _ams369fg06_gamma_ctl()
309 	struct backlight_device *bd;  in ams369fg06_power_on()  local
311 	pd = lcd->lcd_pd;  in ams369fg06_power_on()
312 	bd = lcd->bd;  in ams369fg06_power_on()
314 	if (pd->power_on) {  in ams369fg06_power_on()
315 		pd->power_on(lcd->ld, 1);  in ams369fg06_power_on()
316 		msleep(pd->power_on_delay);  in ams369fg06_power_on()
319 	if (!pd->reset) {  in ams369fg06_power_on()
320 		dev_err(lcd->dev, "reset is NULL.\n");  in ams369fg06_power_on()
321 		return -EINVAL;  in ams369fg06_power_on()
324 	pd->reset(lcd->ld);  in ams369fg06_power_on()
325 	msleep(pd->reset_delay);  in ams369fg06_power_on()
329 		dev_err(lcd->dev, "failed to initialize ldi.\n");  in ams369fg06_power_on()
335 		dev_err(lcd->dev, "failed to enable ldi.\n");  in ams369fg06_power_on()
340 	ret = ams369fg06_gamma_ctl(lcd, bd->props.brightness);  in ams369fg06_power_on()
342 		dev_err(lcd->dev, "lcd gamma setting failed.\n");  in ams369fg06_power_on()
354 	pd = lcd->lcd_pd;  in ams369fg06_power_off()
358 		dev_err(lcd->dev, "lcd setting failed.\n");  in ams369fg06_power_off()
359 		return -EIO;  in ams369fg06_power_off()
362 	msleep(pd->power_off_delay);  in ams369fg06_power_off()
364 	if (pd->power_on)  in ams369fg06_power_off()
365 		pd->power_on(lcd->ld, 0);  in ams369fg06_power_off()
375 		!ams369fg06_power_is_on(lcd->power))  in ams369fg06_power()
378 		ams369fg06_power_is_on(lcd->power))  in ams369fg06_power()
382 		lcd->power = power;  in ams369fg06_power()
391 	return lcd->power;  in ams369fg06_get_power()
400 		dev_err(lcd->dev, "power value should be 0, 1 or 4.\n");  in ams369fg06_set_power()
401 		return -EINVAL;  in ams369fg06_set_power()
407 static int ams369fg06_set_brightness(struct backlight_device *bd)  in ams369fg06_set_brightness()  argument
410 	int brightness = bd->props.brightness;  in ams369fg06_set_brightness()
411 	struct ams369fg06 *lcd = bl_get_data(bd);  in ams369fg06_set_brightness()
414 		brightness > bd->props.max_brightness) {  in ams369fg06_set_brightness()
415 		dev_err(&bd->dev, "lcd brightness should be %d to %d.\n",  in ams369fg06_set_brightness()
417 		return -EINVAL;  in ams369fg06_set_brightness()
420 	ret = ams369fg06_gamma_ctl(lcd, bd->props.brightness);  in ams369fg06_set_brightness()
422 		dev_err(&bd->dev, "lcd brightness setting failed.\n");  in ams369fg06_set_brightness()
423 		return -EIO;  in ams369fg06_set_brightness()
443 	struct backlight_device *bd = NULL;  in ams369fg06_probe()  local
446 	lcd = devm_kzalloc(&spi->dev, sizeof(struct ams369fg06), GFP_KERNEL);  in ams369fg06_probe()
448 		return -ENOMEM;  in ams369fg06_probe()
450 	/* ams369fg06 lcd panel uses 3-wire 16bits SPI Mode. */  in ams369fg06_probe()
451 	spi->bits_per_word = 16;  in ams369fg06_probe()
455 		dev_err(&spi->dev, "spi setup failed.\n");  in ams369fg06_probe()
459 	lcd->spi = spi;  in ams369fg06_probe()
460 	lcd->dev = &spi->dev;  in ams369fg06_probe()
462 	lcd->lcd_pd = dev_get_platdata(&spi->dev);  in ams369fg06_probe()
463 	if (!lcd->lcd_pd) {  in ams369fg06_probe()
464 		dev_err(&spi->dev, "platform data is NULL\n");  in ams369fg06_probe()
465 		return -EINVAL;  in ams369fg06_probe()
468 	ld = devm_lcd_device_register(&spi->dev, "ams369fg06", &spi->dev, lcd,  in ams369fg06_probe()
473 	lcd->ld = ld;  in ams369fg06_probe()
479 	bd = devm_backlight_device_register(&spi->dev, "ams369fg06-bl",  in ams369fg06_probe()
480 					&spi->dev, lcd,  in ams369fg06_probe()
482 	if (IS_ERR(bd))  in ams369fg06_probe()
483 		return PTR_ERR(bd);  in ams369fg06_probe()
485 	bd->props.brightness = DEFAULT_BRIGHTNESS;  in ams369fg06_probe()
486 	lcd->bd = bd;  in ams369fg06_probe()
488 	if (!lcd->lcd_pd->lcd_enabled) {  in ams369fg06_probe()
494 		lcd->power = BACKLIGHT_POWER_OFF;  in ams369fg06_probe()
498 		lcd->power = BACKLIGHT_POWER_ON;  in ams369fg06_probe()
503 	dev_info(&spi->dev, "ams369fg06 panel driver has been probed.\n");  in ams369fg06_probe()
520 	dev_dbg(dev, "lcd->power = %d\n", lcd->power);  in ams369fg06_suspend()
533 	lcd->power = BACKLIGHT_POWER_OFF;  in ams369fg06_resume()