4  * x9250.c  --  Renesas X9250 potentiometers IIO driver
25 struct x9250 {  struct
35 static int x9250_write8(struct x9250 *x9250, u8 cmd, u8 val)  in x9250_write8()  argument
43 	return spi_write_then_read(x9250->spi, txbuf, ARRAY_SIZE(txbuf), NULL, 0);  in x9250_write8()
46 static int x9250_read8(struct x9250 *x9250, u8 cmd, u8 *val)  in x9250_read8()  argument
53 	return spi_write_then_read(x9250->spi, txbuf, ARRAY_SIZE(txbuf), val, 1);  in x9250_read8()
76 	struct x9250 *x9250 = iio_priv(indio_dev);  in x9250_read_raw()  local
83 		ret = x9250_read8(x9250, X9250_CMD_RD_WCR(ch), &v);  in x9250_read_raw()
90 		*val = 1000 * x9250->cfg->kohms;  in x9250_read_raw()
117 	struct x9250 *x9250 = iio_priv(indio_dev);  in x9250_write_raw()  local
127 	gpiod_set_value_cansleep(x9250->wp_gpio, 0);  in x9250_write_raw()
128 	ret = x9250_write8(x9250, X9250_CMD_WR_WCR(ch), val);  in x9250_write_raw()
129 	gpiod_set_value_cansleep(x9250->wp_gpio, 1);  in x9250_write_raw()
159 	struct x9250 *x9250;  in x9250_probe()  local
168 	 * The x9250 needs a 5ms maximum delay after the power-supplies are set  in x9250_probe()
173 	indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*x9250));  in x9250_probe()
177 	x9250 = iio_priv(indio_dev);  in x9250_probe()
178 	x9250->spi = spi;  in x9250_probe()
179 	x9250->cfg = spi_get_device_match_data(spi);  in x9250_probe()
180 	x9250->wp_gpio = devm_gpiod_get_optional(&spi->dev, "wp", GPIOD_OUT_LOW);  in x9250_probe()
181 	if (IS_ERR(x9250->wp_gpio))  in x9250_probe()
182 		return dev_err_probe(&spi->dev, PTR_ERR(x9250->wp_gpio),  in x9250_probe()
188 	indio_dev->name = x9250->cfg->name;  in x9250_probe()
209 		.name = "x9250",
219 MODULE_DESCRIPTION("X9250 ALSA SoC driver");