#include <linux/bitfield.h>
#include <linux/bits.h>
#include <linux/component.h>
#include <linux/mod_devicetable.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <drm/drm_blend.h>
#include "dc-drv.h"
#include "dc-pe.h"
#define PIXENGCFG_DYNAMIC 0x8
#define PIXENGCFG_DYNAMIC_SEC_SEL_MASK GENMASK(13, 8)
#define PIXENGCFG_DYNAMIC_SEC_SEL(x) \
FIELD_PREP(PIXENGCFG_DYNAMIC_SEC_SEL_MASK, (x))
#define PIXENGCFG_DYNAMIC_PRIM_SEL_MASK GENMASK(5, 0)
#define PIXENGCFG_DYNAMIC_PRIM_SEL(x) \
FIELD_PREP(PIXENGCFG_DYNAMIC_PRIM_SEL_MASK, (x))
#define STATICCONTROL 0x8
#define SHDTOKSEL_MASK GENMASK(4, 3)
#define SHDTOKSEL(x) FIELD_PREP(SHDTOKSEL_MASK, (x))
#define SHDLDSEL_MASK GENMASK(2, 1)
#define SHDLDSEL(x) FIELD_PREP(SHDLDSEL_MASK, (x))
#define CONTROL 0xc
#define CTRL_MODE_MASK BIT(0)
#define CTRL_MODE(x) FIELD_PREP(CTRL_MODE_MASK, (x))
#define BLENDCONTROL 0x10
#define ALPHA_MASK GENMASK(23, 16)
#define ALPHA(x) FIELD_PREP(ALPHA_MASK, (x))
#define SEC_A_BLD_FUNC_MASK GENMASK(14, 12)
#define SEC_A_BLD_FUNC(x) \
FIELD_PREP(SEC_A_BLD_FUNC_MASK, (x))
#define PRIM_A_BLD_FUNC_MASK GENMASK(10, 8)
#define PRIM_A_BLD_FUNC(x) \
FIELD_PREP(PRIM_A_BLD_FUNC_MASK, (x))
#define SEC_C_BLD_FUNC_MASK GENMASK(6, 4)
#define SEC_C_BLD_FUNC(x) \
FIELD_PREP(SEC_C_BLD_FUNC_MASK, (x))
#define PRIM_C_BLD_FUNC_MASK GENMASK(2, 0)
#define PRIM_C_BLD_FUNC(x) \
FIELD_PREP(PRIM_C_BLD_FUNC_MASK, (x))
#define POSITION 0x14
#define YPOS_MASK GENMASK(31, 16)
#define YPOS(x) FIELD_PREP(YPOS_MASK, (x))
#define XPOS_MASK GENMASK(15, 0)
#define XPOS(x) FIELD_PREP(XPOS_MASK, (x))
enum dc_lb_blend_func {
DC_LAYERBLEND_BLEND_ZERO,
DC_LAYERBLEND_BLEND_ONE,
DC_LAYERBLEND_BLEND_PRIM_ALPHA,
DC_LAYERBLEND_BLEND_ONE_MINUS_PRIM_ALPHA,
DC_LAYERBLEND_BLEND_SEC_ALPHA,
DC_LAYERBLEND_BLEND_ONE_MINUS_SEC_ALPHA,
DC_LAYERBLEND_BLEND_CONST_ALPHA,
DC_LAYERBLEND_BLEND_ONE_MINUS_CONST_ALPHA,
};
enum dc_lb_shadow_sel {
BOTH = 0x2,
};
static const struct dc_subdev_info dc_lb_info[] = {
{ .reg_start = 0x56180ba0, .id = 0, },
{ .reg_start = 0x56180bc0, .id = 1, },
{ .reg_start = 0x56180be0, .id = 2, },
{ .reg_start = 0x56180c00, .id = 3, },
};
static const struct regmap_range dc_lb_pec_regmap_access_ranges[] = {
regmap_reg_range(PIXENGCFG_DYNAMIC, PIXENGCFG_DYNAMIC),
};
static const struct regmap_access_table dc_lb_pec_regmap_access_table = {
.yes_ranges = dc_lb_pec_regmap_access_ranges,
.n_yes_ranges = ARRAY_SIZE(dc_lb_pec_regmap_access_ranges),
};
static const struct regmap_config dc_lb_pec_regmap_config = {
.name = "pec",
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.fast_io = true,
.wr_table = &dc_lb_pec_regmap_access_table,
.rd_table = &dc_lb_pec_regmap_access_table,
.max_register = PIXENGCFG_DYNAMIC,
};
static const struct regmap_range dc_lb_regmap_ranges[] = {
regmap_reg_range(STATICCONTROL, POSITION),
};
static const struct regmap_access_table dc_lb_regmap_access_table = {
.yes_ranges = dc_lb_regmap_ranges,
.n_yes_ranges = ARRAY_SIZE(dc_lb_regmap_ranges),
};
static const struct regmap_config dc_lb_cfg_regmap_config = {
.name = "cfg",
.reg_bits = 32,
.reg_stride = 4,
.val_bits = 32,
.fast_io = true,
.wr_table = &dc_lb_regmap_access_table,
.rd_table = &dc_lb_regmap_access_table,
.max_register = POSITION,
};
static const enum dc_link_id prim_sels[] = {
LINK_ID_NONE,
LINK_ID_CONSTFRAME0,
LINK_ID_CONSTFRAME1,
LINK_ID_CONSTFRAME4,
LINK_ID_CONSTFRAME5,
LINK_ID_LAYERBLEND0,
LINK_ID_LAYERBLEND1,
LINK_ID_LAYERBLEND2,
LINK_ID_LAYERBLEND3,
};
static const enum dc_link_id sec_sels[] = {
LINK_ID_NONE,
LINK_ID_FETCHWARP2,
LINK_ID_FETCHLAYER0,
};
enum dc_link_id dc_lb_get_link_id(struct dc_lb *lb)
{
return lb->link;
}
void dc_lb_pec_dynamic_prim_sel(struct dc_lb *lb, enum dc_link_id prim)
{
int fixed_sels_num = ARRAY_SIZE(prim_sels) - 4;
int i;
for (i = 0; i < fixed_sels_num + lb->id; i++) {
if (prim_sels[i] == prim) {
regmap_write_bits(lb->reg_pec, PIXENGCFG_DYNAMIC,
PIXENGCFG_DYNAMIC_PRIM_SEL_MASK,
PIXENGCFG_DYNAMIC_PRIM_SEL(prim));
return;
}
}
dev_warn(lb->dev, "invalid primary input selection:%d\n", prim);
}
void dc_lb_pec_dynamic_sec_sel(struct dc_lb *lb, enum dc_link_id sec)
{
int i;
for (i = 0; i < ARRAY_SIZE(sec_sels); i++) {
if (sec_sels[i] == sec) {
regmap_write_bits(lb->reg_pec, PIXENGCFG_DYNAMIC,
PIXENGCFG_DYNAMIC_SEC_SEL_MASK,
PIXENGCFG_DYNAMIC_SEC_SEL(sec));
return;
}
}
dev_warn(lb->dev, "invalid secondary input selection:%d\n", sec);
}
void dc_lb_pec_clken(struct dc_lb *lb, enum dc_pec_clken clken)
{
regmap_write_bits(lb->reg_pec, PIXENGCFG_DYNAMIC, CLKEN_MASK,
CLKEN(clken));
}
static inline void dc_lb_enable_shden(struct dc_lb *lb)
{
regmap_write_bits(lb->reg_cfg, STATICCONTROL, SHDEN, SHDEN);
}
static inline void dc_lb_shdtoksel(struct dc_lb *lb, enum dc_lb_shadow_sel sel)
{
regmap_write_bits(lb->reg_cfg, STATICCONTROL, SHDTOKSEL_MASK,
SHDTOKSEL(sel));
}
static inline void dc_lb_shdldsel(struct dc_lb *lb, enum dc_lb_shadow_sel sel)
{
regmap_write_bits(lb->reg_cfg, STATICCONTROL, SHDLDSEL_MASK,
SHDLDSEL(sel));
}
void dc_lb_mode(struct dc_lb *lb, enum dc_lb_mode mode)
{
regmap_write_bits(lb->reg_cfg, CONTROL, CTRL_MODE_MASK, mode);
}
static inline void dc_lb_blendcontrol(struct dc_lb *lb)
{
u32 val = PRIM_A_BLD_FUNC(DC_LAYERBLEND_BLEND_ZERO) |
SEC_A_BLD_FUNC(DC_LAYERBLEND_BLEND_ZERO) |
PRIM_C_BLD_FUNC(DC_LAYERBLEND_BLEND_ZERO) |
SEC_C_BLD_FUNC(DC_LAYERBLEND_BLEND_CONST_ALPHA) |
ALPHA(DRM_BLEND_ALPHA_OPAQUE >> 8);
regmap_write(lb->reg_cfg, BLENDCONTROL, val);
}
void dc_lb_position(struct dc_lb *lb, int x, int y)
{
regmap_write(lb->reg_cfg, POSITION, XPOS(x) | YPOS(y));
}
int dc_lb_get_id(struct dc_lb *lb)
{
return lb->id;
}
void dc_lb_init(struct dc_lb *lb)
{
dc_lb_pec_dynamic_prim_sel(lb, LINK_ID_NONE);
dc_lb_pec_dynamic_sec_sel(lb, LINK_ID_NONE);
dc_lb_pec_clken(lb, CLKEN_DISABLE);
dc_lb_shdldsel(lb, BOTH);
dc_lb_shdtoksel(lb, BOTH);
dc_lb_blendcontrol(lb);
dc_lb_enable_shden(lb);
}
static int dc_lb_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_pec;
void __iomem *base_cfg;
struct dc_lb *lb;
lb = devm_kzalloc(dev, sizeof(*lb), GFP_KERNEL);
if (!lb)
return -ENOMEM;
base_pec = devm_platform_get_and_ioremap_resource(pdev, 0, &res_pec);
if (IS_ERR(base_pec))
return PTR_ERR(base_pec);
base_cfg = devm_platform_ioremap_resource_byname(pdev, "cfg");
if (IS_ERR(base_cfg))
return PTR_ERR(base_cfg);
lb->reg_pec = devm_regmap_init_mmio(dev, base_pec,
&dc_lb_pec_regmap_config);
if (IS_ERR(lb->reg_pec))
return PTR_ERR(lb->reg_pec);
lb->reg_cfg = devm_regmap_init_mmio(dev, base_cfg,
&dc_lb_cfg_regmap_config);
if (IS_ERR(lb->reg_cfg))
return PTR_ERR(lb->reg_cfg);
lb->id = dc_subdev_get_id(dc_lb_info, ARRAY_SIZE(dc_lb_info), res_pec);
if (lb->id < 0) {
dev_err(dev, "failed to get instance number: %d\n", lb->id);
return lb->id;
}
lb->dev = dev;
lb->link = LINK_ID_LAYERBLEND0 + lb->id;
dc_drm->lb[lb->id] = lb;
return 0;
}
static const struct component_ops dc_lb_ops = {
.bind = dc_lb_bind,
};
static int dc_lb_probe(struct platform_device *pdev)
{
int ret;
ret = component_add(&pdev->dev, &dc_lb_ops);
if (ret)
return dev_err_probe(&pdev->dev, ret,
"failed to add component\n");
return 0;
}
static void dc_lb_remove(struct platform_device *pdev)
{
component_del(&pdev->dev, &dc_lb_ops);
}
static const struct of_device_id dc_lb_dt_ids[] = {
{ .compatible = "fsl,imx8qxp-dc-layerblend" },
{ }
};
MODULE_DEVICE_TABLE(of, dc_lb_dt_ids);
struct platform_driver dc_lb_driver = {
.probe = dc_lb_probe,
.remove = dc_lb_remove,
.driver = {
.name = "imx8-dc-layerblend",
.suppress_bind_attrs = true,
.of_match_table = dc_lb_dt_ids,
},
};
