1 // SPDX-License-Identifier: GPL-2.0
3 #include <linux/device.h>
5 #include <linux/spi/spi.h>
10 #include "panel-samsung-s6e63m0.h"
14 static int s6e63m0_spi_dcs_read(struct device *dev, const u8 cmd, u8 *data)  in s6e63m0_spi_dcs_read()
17 	 * FIXME: implement reading DCS commands over SPI so we can  in s6e63m0_spi_dcs_read()
25 static int s6e63m0_spi_write_word(struct device *dev, u16 data)  in s6e63m0_spi_write_word()
27 	struct spi_device *spi = to_spi_device(dev);  in s6e63m0_spi_write_word()  local
37 	return spi_sync(spi, &msg);  in s6e63m0_spi_write_word()
40 static int s6e63m0_spi_dcs_write(struct device *dev, const u8 *data, size_t len)  in s6e63m0_spi_dcs_write()
44 	dev_dbg(dev, "SPI writing dcs seq: %*ph\n", (int)len, data);  in s6e63m0_spi_dcs_write()
47 	while (!ret && --len) {  in s6e63m0_spi_dcs_write()
53 		dev_err(dev, "SPI error %d writing dcs seq: %*ph\n", ret,  in s6e63m0_spi_dcs_write()
62 static int s6e63m0_spi_probe(struct spi_device *spi)  in s6e63m0_spi_probe()  argument
64 	struct device *dev = &spi->dev;  in s6e63m0_spi_probe()
67 	spi->bits_per_word = 9;  in s6e63m0_spi_probe()
68 	spi->mode = SPI_MODE_3;  in s6e63m0_spi_probe()
69 	ret = spi_setup(spi);  in s6e63m0_spi_probe()
71 		dev_err(dev, "spi setup failed.\n");  in s6e63m0_spi_probe()
78 static int s6e63m0_spi_remove(struct spi_device *spi)  in s6e63m0_spi_remove()  argument
80 	return s6e63m0_remove(&spi->dev);  in s6e63m0_spi_remove()
93 		.name		= "panel-samsung-s6e63m0",
100 MODULE_DESCRIPTION("s6e63m0 LCD SPI Driver");