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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2024 NXP
*/
#include <linux/component.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include "dc-drv.h"
#include "dc-de.h"
#define TCON_CTRL 0x410
#define CTRL_RST_VAL 0x01401408
/* red: MAPBIT 29-20, green: MAPBIT 19-10, blue: MAPBIT 9-0 */
#define MAPBIT3_0 0x418
#define MAPBIT7_4 0x41c
#define MAPBIT11_8 0x420
#define MAPBIT15_12 0x424
#define MAPBIT19_16 0x428
#define MAPBIT23_20 0x42c
#define MAPBIT27_24 0x430
#define MAPBIT31_28 0x434
static const struct dc_subdev_info dc_tc_info[] = {
{ .reg_start = 0x5618c800, .id = 0, },
{ .reg_start = 0x5618e400, .id = 1, },
};
static const struct regmap_range dc_tc_regmap_ranges[] = {
regmap_reg_range(TCON_CTRL, TCON_CTRL),
regmap_reg_range(MAPBIT3_0, MAPBIT31_28),
};
static const struct regmap_access_table dc_tc_regmap_access_table = {
.yes_ranges = dc_tc_regmap_ranges,
.n_yes_ranges = ARRAY_SIZE(dc_tc_regmap_ranges),
};
static const struct regmap_config dc_tc_regmap_config = {
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.fast_io = true,
.wr_table = &dc_tc_regmap_access_table,
.rd_table = &dc_tc_regmap_access_table,
.max_register = MAPBIT31_28,
};
/*
* The pixels reach TCON are always in 30-bit BGR format.
* The first bridge always receives pixels in 30-bit RGB format.
* So, map the format to MEDIA_BUS_FMT_RGB101010_1X30.
*/
static const u32 dc_tc_mapbit[] = {
0x17161514, 0x1b1a1918, 0x0b0a1d1c, 0x0f0e0d0c,
0x13121110, 0x03020100, 0x07060504, 0x00000908,
};
void dc_tc_init(struct dc_tc *tc)
{
/* reset TCON_CTRL to POR default so that TCON works in bypass mode */
regmap_write(tc->reg, TCON_CTRL, CTRL_RST_VAL);
/* set format */
regmap_bulk_write(tc->reg, MAPBIT3_0, dc_tc_mapbit,
ARRAY_SIZE(dc_tc_mapbit));
}
static int dc_tc_bind(struct device *dev, struct device *master, void *data)
{
struct platform_device *pdev = to_platform_device(dev);
struct dc_drm_device *dc_drm = data;
struct resource *res;
void __iomem *base;
struct dc_tc *tc;
int id;
tc = devm_kzalloc(dev, sizeof(*tc), GFP_KERNEL);
if (!tc)
return -ENOMEM;
base = devm_platform_get_and_ioremap_resource(pdev, 0, &res);
if (IS_ERR(base))
return PTR_ERR(base);
tc->reg = devm_regmap_init_mmio(dev, base, &dc_tc_regmap_config);
if (IS_ERR(tc->reg))
return PTR_ERR(tc->reg);
id = dc_subdev_get_id(dc_tc_info, ARRAY_SIZE(dc_tc_info), res);
if (id < 0) {
dev_err(dev, "failed to get instance number: %d\n", id);
return id;
}
tc->dev = dev;
dc_drm->tc[id] = tc;
return 0;
}
static const struct component_ops dc_tc_ops = {
.bind = dc_tc_bind,
};
static int dc_tc_probe(struct platform_device *pdev)
{
int ret;
ret = component_add(&pdev->dev, &dc_tc_ops);
if (ret)
return dev_err_probe(&pdev->dev, ret,
"failed to add component\n");
return 0;
}
static void dc_tc_remove(struct platform_device *pdev)
{
component_del(&pdev->dev, &dc_tc_ops);
}
static const struct of_device_id dc_tc_dt_ids[] = {
{ .compatible = "fsl,imx8qxp-dc-tcon" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, dc_tc_dt_ids);
struct platform_driver dc_tc_driver = {
.probe = dc_tc_probe,
.remove = dc_tc_remove,
.driver = {
.name = "imx8-dc-tcon",
.suppress_bind_attrs = true,
.of_match_table = dc_tc_dt_ids,
},
};
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