1 // SPDX-License-Identifier: GPL-2.0-or-later
37 	struct backlight_device		*bd;  member
173 	return spi_sync(lcd->spi, &msg);  in ams369fg06_spi_write_byte()
176 static int ams369fg06_spi_write(struct ams369fg06 *lcd, unsigned char address,  in ams369fg06_spi_write()  argument
181 	if (address != DATA_ONLY)  in ams369fg06_spi_write()
182 		ret = ams369fg06_spi_write_byte(lcd, 0x70, address);  in ams369fg06_spi_write()
219 			dev_err(lcd->dev, "failed to set gamma table.\n");  in _ams369fg06_gamma_ctl()
310 	struct backlight_device *bd;  in ams369fg06_power_on()  local
312 	pd = lcd->lcd_pd;  in ams369fg06_power_on()
313 	bd = lcd->bd;  in ams369fg06_power_on()
315 	if (pd->power_on) {  in ams369fg06_power_on()
316 		pd->power_on(lcd->ld, 1);  in ams369fg06_power_on()
317 		msleep(pd->power_on_delay);  in ams369fg06_power_on()
320 	if (!pd->reset) {  in ams369fg06_power_on()
321 		dev_err(lcd->dev, "reset is NULL.\n");  in ams369fg06_power_on()
322 		return -EINVAL;  in ams369fg06_power_on()
325 	pd->reset(lcd->ld);  in ams369fg06_power_on()
326 	msleep(pd->reset_delay);  in ams369fg06_power_on()
330 		dev_err(lcd->dev, "failed to initialize ldi.\n");  in ams369fg06_power_on()
336 		dev_err(lcd->dev, "failed to enable ldi.\n");  in ams369fg06_power_on()
341 	ret = ams369fg06_gamma_ctl(lcd, bd->props.brightness);  in ams369fg06_power_on()
343 		dev_err(lcd->dev, "lcd gamma setting failed.\n");  in ams369fg06_power_on()
355 	pd = lcd->lcd_pd;  in ams369fg06_power_off()
359 		dev_err(lcd->dev, "lcd setting failed.\n");  in ams369fg06_power_off()
360 		return -EIO;  in ams369fg06_power_off()
363 	msleep(pd->power_off_delay);  in ams369fg06_power_off()
365 	if (pd->power_on)  in ams369fg06_power_off()
366 		pd->power_on(lcd->ld, 0);  in ams369fg06_power_off()
376 		!ams369fg06_power_is_on(lcd->power))  in ams369fg06_power()
379 		ams369fg06_power_is_on(lcd->power))  in ams369fg06_power()
383 		lcd->power = power;  in ams369fg06_power()
392 	return lcd->power;  in ams369fg06_get_power()
401 		dev_err(lcd->dev, "power value should be 0, 1 or 4.\n");  in ams369fg06_set_power()
402 		return -EINVAL;  in ams369fg06_set_power()
408 static int ams369fg06_set_brightness(struct backlight_device *bd)  in ams369fg06_set_brightness()  argument
411 	int brightness = bd->props.brightness;  in ams369fg06_set_brightness()
412 	struct ams369fg06 *lcd = bl_get_data(bd);  in ams369fg06_set_brightness()
415 		brightness > bd->props.max_brightness) {  in ams369fg06_set_brightness()
416 		dev_err(&bd->dev, "lcd brightness should be %d to %d.\n",  in ams369fg06_set_brightness()
418 		return -EINVAL;  in ams369fg06_set_brightness()
421 	ret = ams369fg06_gamma_ctl(lcd, bd->props.brightness);  in ams369fg06_set_brightness()
423 		dev_err(&bd->dev, "lcd brightness setting failed.\n");  in ams369fg06_set_brightness()
424 		return -EIO;  in ams369fg06_set_brightness()
444 	struct backlight_device *bd = NULL;  in ams369fg06_probe()  local
447 	lcd = devm_kzalloc(&spi->dev, sizeof(struct ams369fg06), GFP_KERNEL);  in ams369fg06_probe()
449 		return -ENOMEM;  in ams369fg06_probe()
451 	/* ams369fg06 lcd panel uses 3-wire 16bits SPI Mode. */  in ams369fg06_probe()
452 	spi->bits_per_word = 16;  in ams369fg06_probe()
456 		dev_err(&spi->dev, "spi setup failed.\n");  in ams369fg06_probe()
460 	lcd->spi = spi;  in ams369fg06_probe()
461 	lcd->dev = &spi->dev;  in ams369fg06_probe()
463 	lcd->lcd_pd = dev_get_platdata(&spi->dev);  in ams369fg06_probe()
464 	if (!lcd->lcd_pd) {  in ams369fg06_probe()
465 		dev_err(&spi->dev, "platform data is NULL\n");  in ams369fg06_probe()
466 		return -EINVAL;  in ams369fg06_probe()
469 	ld = devm_lcd_device_register(&spi->dev, "ams369fg06", &spi->dev, lcd,  in ams369fg06_probe()
474 	lcd->ld = ld;  in ams369fg06_probe()
480 	bd = devm_backlight_device_register(&spi->dev, "ams369fg06-bl",  in ams369fg06_probe()
481 					&spi->dev, lcd,  in ams369fg06_probe()
483 	if (IS_ERR(bd))  in ams369fg06_probe()
484 		return PTR_ERR(bd);  in ams369fg06_probe()
486 	bd->props.brightness = DEFAULT_BRIGHTNESS;  in ams369fg06_probe()
487 	lcd->bd = bd;  in ams369fg06_probe()
489 	if (!lcd->lcd_pd->lcd_enabled) {  in ams369fg06_probe()
495 		lcd->power = FB_BLANK_POWERDOWN;  in ams369fg06_probe()
499 		lcd->power = FB_BLANK_UNBLANK;  in ams369fg06_probe()
504 	dev_info(&spi->dev, "ams369fg06 panel driver has been probed.\n");  in ams369fg06_probe()
521 	dev_dbg(dev, "lcd->power = %d\n", lcd->power);  in ams369fg06_suspend()
534 	lcd->power = FB_BLANK_POWERDOWN;  in ams369fg06_resume()