1 // SPDX-License-Identifier: GPL-2.0-only
5  *  Copyright (c) 2004-2006 Richard Purdie
43 #define POWER1_VW_ON    0x01  /* VW Supply FET ON */
44 #define POWER1_GVSS_ON  0x02  /* GVSS(-8V) Power Supply ON */
45 #define POWER1_VDD_ON   0x04  /* VDD(8V),SVSS(-4V) Power Supply ON */
47 #define POWER1_VW_OFF   0x00  /* VW Supply FET OFF */
48 #define POWER1_GVSS_OFF 0x00  /* GVSS(-8V) Power Supply OFF */
49 #define POWER1_VDD_OFF  0x00  /* VDD(8V),SVSS(-4V) Power Supply OFF */
53 #define POWER0_DAC_ON   0x04  /* DAC Power Supply ON */
54 #define POWER0_COM_ON   0x08  /* COM Power Supply ON */
55 #define POWER0_VCC5_ON  0x10  /* VCC5 Power Supply ON */
57 #define POWER0_DAC_OFF  0x00  /* DAC Power Supply OFF */
58 #define POWER0_COM_OFF  0x00  /* COM Power Supply OFF */
59 #define POWER0_VCC5_OFF 0x00  /* VCC5 Power Supply OFF */
177 		.tx_buf		= lcd->buf,  in corgi_ssp_lcdtg_send()
180 	lcd->buf[0] = ((adrs & 0x07) << 5) | (data & 0x1f);  in corgi_ssp_lcdtg_send()
184 	return spi_sync(lcd->spi_dev, &msg);  in corgi_ssp_lcdtg_send()
226 	/* VDD(+8V), SVSS(-4V) ON */  in corgi_lcd_power_on()
249 	/* VCC5 ON, DAC ON */  in corgi_lcd_power_on()
254 	/* GVSS(-8V) ON, VDD ON */  in corgi_lcd_power_on()
275 	lcdtg_set_phadadj(lcd, lcd->mode);  in corgi_lcd_power_on()
284 	switch (lcd->mode) {  in corgi_lcd_power_on()
317 	/* (5)VCC5 OFF */  in corgi_lcd_power_off()
340 	if (m->xres == 640 || m->xres == 480)  in corgi_lcd_set_mode()
343 	if (lcd->mode == mode)  in corgi_lcd_set_mode()
358 	lcd->mode = mode;  in corgi_lcd_set_mode()
366 	if (POWER_IS_ON(power) && !POWER_IS_ON(lcd->power))  in corgi_lcd_set_power()
369 	if (!POWER_IS_ON(power) && POWER_IS_ON(lcd->power))  in corgi_lcd_set_power()
372 	lcd->power = power;  in corgi_lcd_set_power()
380 	return lcd->power;  in corgi_lcd_get_power()
393 	return lcd->intensity;  in corgi_bl_get_intensity()
408 	if (lcd->backlight_cont)  in corgi_bl_set_intensity()
409 		gpiod_set_value_cansleep(lcd->backlight_cont, cont);  in corgi_bl_set_intensity()
411 	if (lcd->backlight_on)  in corgi_bl_set_intensity()
412 		gpiod_set_value_cansleep(lcd->backlight_on, intensity);  in corgi_bl_set_intensity()
414 	if (lcd->kick_battery)  in corgi_bl_set_intensity()
415 		lcd->kick_battery();  in corgi_bl_set_intensity()
417 	lcd->intensity = intensity;  in corgi_bl_set_intensity()
429 	if ((corgibl_flags & CORGIBL_BATTLOW) && intensity > lcd->limit_mask)  in corgi_bl_update_status()
430 		intensity = lcd->limit_mask;  in corgi_bl_update_status()
442 	backlight_update_status(the_corgi_lcd->bl_dev);  in corgi_lcd_limit_intensity()
458 	corgi_lcd_set_power(lcd->lcd_dev, FB_BLANK_POWERDOWN);  in corgi_lcd_suspend()
467 	corgi_lcd_set_power(lcd->lcd_dev, FB_BLANK_UNBLANK);  in corgi_lcd_resume()
468 	backlight_update_status(lcd->bl_dev);  in corgi_lcd_resume()
478 	struct spi_device *spi = lcd->spi_dev;  in setup_gpio_backlight()
480 	lcd->backlight_on = devm_gpiod_get_optional(&spi->dev,  in setup_gpio_backlight()
482 	if (IS_ERR(lcd->backlight_on))  in setup_gpio_backlight()
483 		return PTR_ERR(lcd->backlight_on);  in setup_gpio_backlight()
485 	lcd->backlight_cont = devm_gpiod_get_optional(&spi->dev, "BL_CONT",  in setup_gpio_backlight()
487 	if (IS_ERR(lcd->backlight_cont))  in setup_gpio_backlight()
488 		return PTR_ERR(lcd->backlight_cont);  in setup_gpio_backlight()
496 	struct corgi_lcd_platform_data *pdata = dev_get_platdata(&spi->dev);  in corgi_lcd_probe()
501 		dev_err(&spi->dev, "platform data not available\n");  in corgi_lcd_probe()
502 		return -EINVAL;  in corgi_lcd_probe()
505 	lcd = devm_kzalloc(&spi->dev, sizeof(struct corgi_lcd), GFP_KERNEL);  in corgi_lcd_probe()
507 		return -ENOMEM;  in corgi_lcd_probe()
509 	lcd->spi_dev = spi;  in corgi_lcd_probe()
511 	lcd->lcd_dev = devm_lcd_device_register(&spi->dev, "corgi_lcd",  in corgi_lcd_probe()
512 						&spi->dev, lcd, &corgi_lcd_ops);  in corgi_lcd_probe()
513 	if (IS_ERR(lcd->lcd_dev))  in corgi_lcd_probe()
514 		return PTR_ERR(lcd->lcd_dev);  in corgi_lcd_probe()
516 	lcd->power = FB_BLANK_POWERDOWN;  in corgi_lcd_probe()
517 	lcd->mode = (pdata) ? pdata->init_mode : CORGI_LCD_MODE_VGA;  in corgi_lcd_probe()
521 	props.max_brightness = pdata->max_intensity;  in corgi_lcd_probe()
522 	lcd->bl_dev = devm_backlight_device_register(&spi->dev, "corgi_bl",  in corgi_lcd_probe()
523 						&spi->dev, lcd, &corgi_bl_ops,  in corgi_lcd_probe()
525 	if (IS_ERR(lcd->bl_dev))  in corgi_lcd_probe()
526 		return PTR_ERR(lcd->bl_dev);  in corgi_lcd_probe()
528 	lcd->bl_dev->props.brightness = pdata->default_intensity;  in corgi_lcd_probe()
529 	lcd->bl_dev->props.power = BACKLIGHT_POWER_ON;  in corgi_lcd_probe()
535 	lcd->kick_battery = pdata->kick_battery;  in corgi_lcd_probe()
538 	corgi_lcd_set_power(lcd->lcd_dev, FB_BLANK_UNBLANK);  in corgi_lcd_probe()
539 	backlight_update_status(lcd->bl_dev);  in corgi_lcd_probe()
541 	lcd->limit_mask = pdata->limit_mask;  in corgi_lcd_probe()
550 	lcd->bl_dev->props.power = BACKLIGHT_POWER_ON;  in corgi_lcd_remove()
551 	lcd->bl_dev->props.brightness = 0;  in corgi_lcd_remove()
552 	backlight_update_status(lcd->bl_dev);  in corgi_lcd_remove()
553 	corgi_lcd_set_power(lcd->lcd_dev, FB_BLANK_POWERDOWN);  in corgi_lcd_remove()
558 		.name	= "corgi-lcd",
570 MODULE_ALIAS("spi:corgi-lcd");