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// SPDX-License-Identifier: GPL-2.0
#include <linux/device.h>
#include <linux/module.h>
#include <linux/spi/spi.h>
#include <linux/delay.h>
#include <drm/drm_mipi_dbi.h>
#include <drm/drm_print.h>
#include "panel-samsung-s6e63m0.h"
static const u8 s6e63m0_dbi_read_commands[] = {
MCS_READ_ID1,
MCS_READ_ID2,
MCS_READ_ID3,
0, /* sentinel */
};
static int s6e63m0_spi_dcs_read(struct device *dev, void *trsp,
const u8 cmd, u8 *data)
{
struct mipi_dbi *dbi = trsp;
int ret;
ret = mipi_dbi_command_read(dbi, cmd, data);
if (ret)
dev_err(dev, "error on DBI read command %02x\n", cmd);
return ret;
}
static int s6e63m0_spi_dcs_write(struct device *dev, void *trsp,
const u8 *data, size_t len)
{
struct mipi_dbi *dbi = trsp;
int ret;
ret = mipi_dbi_command_stackbuf(dbi, data[0], (data + 1), (len - 1));
usleep_range(300, 310);
return ret;
}
static int s6e63m0_spi_probe(struct spi_device *spi)
{
struct device *dev = &spi->dev;
struct mipi_dbi *dbi;
int ret;
dbi = devm_kzalloc(dev, sizeof(*dbi), GFP_KERNEL);
if (!dbi)
return -ENOMEM;
ret = mipi_dbi_spi_init(spi, dbi, NULL);
if (ret)
return dev_err_probe(dev, ret, "MIPI DBI init failed\n");
/* Register our custom MCS read commands */
dbi->read_commands = s6e63m0_dbi_read_commands;
return s6e63m0_probe(dev, dbi, s6e63m0_spi_dcs_read,
s6e63m0_spi_dcs_write, false);
}
static int s6e63m0_spi_remove(struct spi_device *spi)
{
return s6e63m0_remove(&spi->dev);
}
static const struct of_device_id s6e63m0_spi_of_match[] = {
{ .compatible = "samsung,s6e63m0" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, s6e63m0_spi_of_match);
static struct spi_driver s6e63m0_spi_driver = {
.probe = s6e63m0_spi_probe,
.remove = s6e63m0_spi_remove,
.driver = {
.name = "panel-samsung-s6e63m0",
.of_match_table = s6e63m0_spi_of_match,
},
};
module_spi_driver(s6e63m0_spi_driver);
MODULE_AUTHOR("Paweł Chmiel <pawel.mikolaj.chmiel@gmail.com>");
MODULE_DESCRIPTION("s6e63m0 LCD SPI Driver");
MODULE_LICENSE("GPL v2");
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