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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-07 18:49:45 +0000
commit2c3c1048746a4622d8c89a29670120dc8fab93c4 (patch)
tree848558de17fb3008cdf4d861b01ac7781903ce39 /drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c
parentInitial commit. (diff)
downloadlinux-2c3c1048746a4622d8c89a29670120dc8fab93c4.tar.xz
linux-2c3c1048746a4622d8c89a29670120dc8fab93c4.zip
Adding upstream version 6.1.76.upstream/6.1.76
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c')
-rw-r--r--drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c88
1 files changed, 88 insertions, 0 deletions
diff --git a/drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c b/drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c
new file mode 100644
index 000000000..d99afcc67
--- /dev/null
+++ b/drivers/gpu/drm/panel/panel-samsung-s6e63m0-spi.c
@@ -0,0 +1,88 @@
+// 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 void s6e63m0_spi_remove(struct spi_device *spi)
+{
+ 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");