1 // SPDX-License-Identifier: GPL-2.0-only
3  *  LCD / Backlight control code for Sharp SL-6000x (tosa)
17 #include <linux/lcd.h>
48 	struct lcd_device *lcd;  member
83 	gpiod_set_value(data->gpiod_tg, 0);  in tosa_lcd_tg_init()
88 	tosa_tg_send(data->spi, TG_TPOSCTL, 0x00);  in tosa_lcd_tg_init()
90 	tosa_tg_send(data->spi, TG_GPOSR, 0x02);  in tosa_lcd_tg_init()
95 	struct spi_device *spi = data->spi;  in tosa_lcd_tg_on()
98 	if (data->is_vga)  in tosa_lcd_tg_on()
103 	/* TG LCD pannel power up */  in tosa_lcd_tg_on()
107 	/* TG LCD GVSS */  in tosa_lcd_tg_on()
110 	if (IS_ERR_OR_NULL(data->i2c)) {  in tosa_lcd_tg_on()
117 			.dev_name = "tosa-bl",  in tosa_lcd_tg_on()
118 			.type	= "tosa-bl",  in tosa_lcd_tg_on()
120 			.platform_data = data->spi,  in tosa_lcd_tg_on()
122 		data->i2c = i2c_new_client_device(adap, &info);  in tosa_lcd_tg_on()
128 	struct spi_device *spi = data->spi;  in tosa_lcd_tg_off()
130 	/* TG LCD VHSA off */  in tosa_lcd_tg_off()
134 	/* TG LCD signal off */  in tosa_lcd_tg_off()
139 	gpiod_set_value(data->gpiod_tg, 1);  in tosa_lcd_tg_off()
143 int tosa_lcd_set_power(struct lcd_device *lcd, int power)  in tosa_lcd_set_power()  argument
145 	struct tosa_lcd_data *data = lcd_get_data(lcd);  in tosa_lcd_set_power()
147 	if (POWER_IS_ON(power) && !POWER_IS_ON(data->lcd_power))  in tosa_lcd_set_power()
150 	if (!POWER_IS_ON(power) && POWER_IS_ON(data->lcd_power))  in tosa_lcd_set_power()
153 	data->lcd_power = power;  in tosa_lcd_set_power()
157 static int tosa_lcd_get_power(struct lcd_device *lcd)  in tosa_lcd_get_power()  argument
159 	struct tosa_lcd_data *data = lcd_get_data(lcd);  in tosa_lcd_get_power()
161 	return data->lcd_power;  in tosa_lcd_get_power()
164 static int tosa_lcd_set_mode(struct lcd_device *lcd, struct fb_videomode *mode)  in tosa_lcd_set_mode()  argument
166 	struct tosa_lcd_data *data = lcd_get_data(lcd);  in tosa_lcd_set_mode()
168 	if (mode->xres == 320 || mode->yres == 320)  in tosa_lcd_set_mode()
169 		data->is_vga = false;  in tosa_lcd_set_mode()
171 		data->is_vga = true;  in tosa_lcd_set_mode()
173 	if (POWER_IS_ON(data->lcd_power))  in tosa_lcd_set_mode()
190 	data = devm_kzalloc(&spi->dev, sizeof(struct tosa_lcd_data),  in tosa_lcd_probe()
193 		return -ENOMEM;  in tosa_lcd_probe()
195 	data->is_vga = true; /* default to VGA mode */  in tosa_lcd_probe()
200 	spi->bits_per_word = 8;  in tosa_lcd_probe()
206 	data->spi = spi;  in tosa_lcd_probe()
209 	data->gpiod_tg = devm_gpiod_get(&spi->dev, "tg #pwr", GPIOD_OUT_LOW);  in tosa_lcd_probe()
210 	if (IS_ERR(data->gpiod_tg))  in tosa_lcd_probe()
211 		return PTR_ERR(data->gpiod_tg);  in tosa_lcd_probe()
219 	data->lcd = devm_lcd_device_register(&spi->dev, "tosa-lcd", &spi->dev,  in tosa_lcd_probe()
222 	if (IS_ERR(data->lcd)) {  in tosa_lcd_probe()
223 		ret = PTR_ERR(data->lcd);  in tosa_lcd_probe()
224 		data->lcd = NULL;  in tosa_lcd_probe()
239 	i2c_unregister_device(data->i2c);  in tosa_lcd_remove()
261 	if (POWER_IS_ON(data->lcd_power))  in tosa_lcd_resume()
274 		.name		= "tosa-lcd",
285 MODULE_DESCRIPTION("LCD/Backlight control for Sharp SL-6000 PDA");
286 MODULE_ALIAS("spi:tosa-lcd");