1 // SPDX-License-Identifier: GPL-2.0-only
3  * lms283gf05.c -- support for Samsung LMS283GF05 LCD
10 #include <linux/delay.h>
21 	struct gpio_desc	*reset;  member
27 	unsigned char		delay;  member
32 	/* REG, VALUE, DELAY */
95 	gpiod_set_value(gpiod, 0); /* De-asserted */  in lms283gf05_reset()
99 	gpiod_set_value(gpiod, 0); /* De-asserted */  in lms283gf05_reset()
120 		mdelay(seq[i].delay);  in lms283gf05_toggle()
127 	struct spi_device *spi = st->spi;  in lms283gf05_power_set()
130 		if (st->reset)  in lms283gf05_power_set()
131 			lms283gf05_reset(st->reset);  in lms283gf05_power_set()
135 		if (st->reset)  in lms283gf05_power_set()
136 			gpiod_set_value(st->reset, 1); /* Asserted */  in lms283gf05_power_set()
152 	st = devm_kzalloc(&spi->dev, sizeof(struct lms283gf05_state),  in lms283gf05_probe()
155 		return -ENOMEM;  in lms283gf05_probe()
157 	st->reset = gpiod_get_optional(&spi->dev, "reset", GPIOD_OUT_LOW);  in lms283gf05_probe()
158 	if (IS_ERR(st->reset))  in lms283gf05_probe()
159 		return PTR_ERR(st->reset);  in lms283gf05_probe()
160 	gpiod_set_consumer_name(st->reset, "LMS283GF05 RESET");  in lms283gf05_probe()
162 	ld = devm_lcd_device_register(&spi->dev, "lms283gf05", &spi->dev, st,  in lms283gf05_probe()
167 	st->spi = spi;  in lms283gf05_probe()
168 	st->ld = ld;  in lms283gf05_probe()
173 	if (st->reset)  in lms283gf05_probe()
174 		lms283gf05_reset(st->reset);  in lms283gf05_probe()