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// SPDX-License-Identifier: GPL-2.0+
/*
* Copyright 2024 NXP
*/
#include <linux/component.h>
#include <linux/ioport.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <drm/drm_fourcc.h>
#include "dc-drv.h"
#include "dc-fu.h"
#define BASEADDRESS(x) (0x10 + FRAC_OFFSET * (x))
#define SOURCEBUFFERATTRIBUTES(x) (0x14 + FRAC_OFFSET * (x))
#define SOURCEBUFFERDIMENSION(x) (0x18 + FRAC_OFFSET * (x))
#define COLORCOMPONENTBITS(x) (0x1c + FRAC_OFFSET * (x))
#define COLORCOMPONENTSHIFT(x) (0x20 + FRAC_OFFSET * (x))
#define LAYEROFFSET(x) (0x24 + FRAC_OFFSET * (x))
#define CLIPWINDOWOFFSET(x) (0x28 + FRAC_OFFSET * (x))
#define CLIPWINDOWDIMENSIONS(x) (0x2c + FRAC_OFFSET * (x))
#define CONSTANTCOLOR(x) (0x30 + FRAC_OFFSET * (x))
#define LAYERPROPERTY(x) (0x34 + FRAC_OFFSET * (x))
#define FRAMEDIMENSIONS 0x150
struct dc_fl {
struct dc_fu fu;
};
static const struct dc_subdev_info dc_fl_info[] = {
{ .reg_start = 0x56180ac0, .id = 0, },
};
static const struct regmap_range dc_fl_regmap_ranges[] = {
regmap_reg_range(STATICCONTROL, FRAMEDIMENSIONS),
};
static const struct regmap_access_table dc_fl_regmap_access_table = {
.yes_ranges = dc_fl_regmap_ranges,
.n_yes_ranges = ARRAY_SIZE(dc_fl_regmap_ranges),
};
static const struct regmap_config dc_fl_cfg_regmap_config = {
.name = "cfg",
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.fast_io = true,
.wr_table = &dc_fl_regmap_access_table,
.rd_table = &dc_fl_regmap_access_table,
.max_register = FRAMEDIMENSIONS,
};
static void dc_fl_set_fmt(struct dc_fu *fu, enum dc_fu_frac frac,
const struct drm_format_info *format)
{
u32 bits = 0, shifts = 0;
dc_fu_set_src_bpp(fu, frac, format->cpp[0] * 8);
regmap_write_bits(fu->reg_cfg, LAYERPROPERTY(frac),
YUVCONVERSIONMODE_MASK,
YUVCONVERSIONMODE(YUVCONVERSIONMODE_OFF));
dc_fu_get_pixel_format_bits(fu, format->format, &bits);
dc_fu_get_pixel_format_shifts(fu, format->format, &shifts);
regmap_write(fu->reg_cfg, COLORCOMPONENTBITS(frac), bits);
regmap_write(fu->reg_cfg, COLORCOMPONENTSHIFT(frac), shifts);
}
static void dc_fl_set_framedimensions(struct dc_fu *fu, int w, int h)
{
regmap_write(fu->reg_cfg, FRAMEDIMENSIONS,
FRAMEWIDTH(w) | FRAMEHEIGHT(h));
}
static void dc_fl_init(struct dc_fu *fu)
{
dc_fu_common_hw_init(fu);
dc_fu_shdldreq_sticky(fu, 0xff);
}
static void dc_fl_set_ops(struct dc_fu *fu)
{
memcpy(&fu->ops, &dc_fu_common_ops, sizeof(dc_fu_common_ops));
fu->ops.init = dc_fl_init;
fu->ops.set_fmt = dc_fl_set_fmt;
fu->ops.set_framedimensions = dc_fl_set_framedimensions;
}
static int dc_fl_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_pec;
void __iomem *base_cfg;
struct dc_fl *fl;
struct dc_fu *fu;
int i, id;
fl = devm_kzalloc(dev, sizeof(*fl), GFP_KERNEL);
if (!fl)
return -ENOMEM;
fu = &fl->fu;
res_pec = platform_get_resource(pdev, IORESOURCE_MEM, 0);
base_cfg = devm_platform_ioremap_resource_byname(pdev, "cfg");
if (IS_ERR(base_cfg))
return PTR_ERR(base_cfg);
fu->reg_cfg = devm_regmap_init_mmio(dev, base_cfg,
&dc_fl_cfg_regmap_config);
if (IS_ERR(fu->reg_cfg))
return PTR_ERR(fu->reg_cfg);
id = dc_subdev_get_id(dc_fl_info, ARRAY_SIZE(dc_fl_info), res_pec);
if (id < 0) {
dev_err(dev, "failed to get instance number: %d\n", id);
return id;
}
fu->link_id = LINK_ID_FETCHLAYER0;
fu->id = DC_FETCHUNIT_FL0;
for (i = 0; i < DC_FETCHUNIT_FRAC_NUM; i++) {
fu->reg_baseaddr[i] = BASEADDRESS(i);
fu->reg_sourcebufferattributes[i] = SOURCEBUFFERATTRIBUTES(i);
fu->reg_sourcebufferdimension[i] = SOURCEBUFFERDIMENSION(i);
fu->reg_layeroffset[i] = LAYEROFFSET(i);
fu->reg_clipwindowoffset[i] = CLIPWINDOWOFFSET(i);
fu->reg_clipwindowdimensions[i] = CLIPWINDOWDIMENSIONS(i);
fu->reg_constantcolor[i] = CONSTANTCOLOR(i);
fu->reg_layerproperty[i] = LAYERPROPERTY(i);
}
snprintf(fu->name, sizeof(fu->name), "FetchLayer%d", id);
dc_fl_set_ops(fu);
dc_drm->fu_disp[fu->id] = fu;
return 0;
}
static const struct component_ops dc_fl_ops = {
.bind = dc_fl_bind,
};
static int dc_fl_probe(struct platform_device *pdev)
{
int ret;
ret = component_add(&pdev->dev, &dc_fl_ops);
if (ret)
return dev_err_probe(&pdev->dev, ret,
"failed to add component\n");
return 0;
}
static void dc_fl_remove(struct platform_device *pdev)
{
component_del(&pdev->dev, &dc_fl_ops);
}
static const struct of_device_id dc_fl_dt_ids[] = {
{ .compatible = "fsl,imx8qxp-dc-fetchlayer" },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, dc_fl_dt_ids);
struct platform_driver dc_fl_driver = {
.probe = dc_fl_probe,
.remove = dc_fl_remove,
.driver = {
.name = "imx8-dc-fetchlayer",
.suppress_bind_attrs = true,
.of_match_table = dc_fl_dt_ids,
},
};
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