void sc_hwset_blend(struct sc_dev *sc, enum sc_blend_op bl_op, bool pre_multi,
unsigned char g_alpha)
{
unsigned int cfg = readl(sc->regs + SCALER_CFG);
int idx = bl_op - 1;
cfg |= SCALER_CFG_BLEND_EN;
writel(cfg, sc->regs + SCALER_CFG);
cfg = readl(sc->regs + SCALER_SRC_BLEND_COLOR);
get_blend_value(&cfg, sc_bl_op_tbl[idx].src_color, pre_multi);
if (g_alpha < 0xff)
cfg |= (SRC_GA << SCALER_OP_SEL_SHIFT);
writel(cfg, sc->regs + SCALER_SRC_BLEND_COLOR);
sc_dbg("src_blend_color is 0x%x, %d\n", cfg, pre_multi);
cfg = readl(sc->regs + SCALER_SRC_BLEND_ALPHA);
get_blend_value(&cfg, sc_bl_op_tbl[idx].src_alpha, 1);
if (g_alpha < 0xff)
cfg |= (SRC_GA << SCALER_OP_SEL_SHIFT) | (g_alpha << 0);
writel(cfg, sc->regs + SCALER_SRC_BLEND_ALPHA);
sc_dbg("src_blend_alpha is 0x%x\n", cfg);
cfg = readl(sc->regs + SCALER_DST_BLEND_COLOR);
get_blend_value(&cfg, sc_bl_op_tbl[idx].dst_color, pre_multi);
if (g_alpha < 0xff)
cfg |= ((INV_SAGA & 0xf) << SCALER_OP_SEL_SHIFT);
writel(cfg, sc->regs + SCALER_DST_BLEND_COLOR);
sc_dbg("dst_blend_color is 0x%x\n", cfg);
cfg = readl(sc->regs + SCALER_DST_BLEND_ALPHA);
get_blend_value(&cfg, sc_bl_op_tbl[idx].dst_alpha, 1);
if (g_alpha < 0xff)
cfg |= ((INV_SAGA & 0xf) << SCALER_OP_SEL_SHIFT);
writel(cfg, sc->regs + SCALER_DST_BLEND_ALPHA);
sc_dbg("dst_blend_alpha is 0x%x\n", cfg);
/*
* If dst format is non-premultiplied format
* and blending operation is enabled,
* result image should be divided by alpha value
* because the result is always pre-multiplied.
*/
if (!pre_multi) {
cfg = readl(sc->regs + SCALER_CFG);
cfg |= SCALER_CFG_BL_DIV_ALPHA_EN;
writel(cfg, sc->regs + SCALER_CFG);
}
}
void sc_hwset_blend(struct sc_dev *sc, enum sc_blend_op bl_op, bool pre_multi,
unsigned char g_alpha, struct sc_src_blend_cfg *src_blend_cfg)
{
unsigned int cfg = __raw_readl(sc->regs + SCALER_CFG);
int idx = bl_op - 1;
cfg |= SCALER_CFG_BLEND_EN;
__raw_writel(cfg, sc->regs + SCALER_CFG);
cfg = __raw_readl(sc->regs + SCALER_SRC_BLEND_COLOR);
get_blend_value(&cfg, sc_bl_op_tbl[idx].src_color, pre_multi);
if (g_alpha < 0xff)
cfg |= (SRC_GA << SCALER_OP_SEL_SHIFT);
__raw_writel(cfg, sc->regs + SCALER_SRC_BLEND_COLOR);
sc_dbg("src_blend_color is 0x%x, %d\n", cfg, pre_multi);
cfg = __raw_readl(sc->regs + SCALER_SRC_BLEND_ALPHA);
get_blend_value(&cfg, sc_bl_op_tbl[idx].src_alpha, 1);
if (g_alpha < 0xff)
cfg |= (SRC_GA << SCALER_OP_SEL_SHIFT) | (g_alpha << 0);
__raw_writel(cfg, sc->regs + SCALER_SRC_BLEND_ALPHA);
sc_dbg("src_blend_alpha is 0x%x\n", cfg);
cfg = __raw_readl(sc->regs + SCALER_DST_BLEND_COLOR);
get_blend_value(&cfg, sc_bl_op_tbl[idx].dst_color, pre_multi);
if (g_alpha < 0xff)
cfg |= ((INV_SAGA & 0xf) << SCALER_OP_SEL_SHIFT);
__raw_writel(cfg, sc->regs + SCALER_DST_BLEND_COLOR);
sc_dbg("dst_blend_color is 0x%x\n", cfg);
cfg = __raw_readl(sc->regs + SCALER_DST_BLEND_ALPHA);
get_blend_value(&cfg, sc_bl_op_tbl[idx].dst_alpha, 1);
if (g_alpha < 0xff)
cfg |= ((INV_SAGA & 0xf) << SCALER_OP_SEL_SHIFT);
__raw_writel(cfg, sc->regs + SCALER_DST_BLEND_ALPHA);
sc_dbg("dst_blend_alpha is 0x%x\n", cfg);
/*
* If dst format is non-premultiplied format
* and blending operation is enabled,
* result image should be divided by alpha value
* because the result is always pre-multiplied.
*/
if (!pre_multi && sc->version != SCALER_VERSION(2, 2, 0)) {
cfg = readl(sc->regs + SCALER_CFG);
cfg |= SCALER_CFG_BL_DIV_ALPHA_EN;
__raw_writel(cfg, sc->regs + SCALER_CFG);
}
/* Set source blending configuration */
if (sc->version == SCALER_VERSION(2, 2, 0)) {
sc_set_blendsrc_cfg(sc, pre_multi, src_blend_cfg);
/* span in the units of pixels */
sc_set_blend_src_span(sc, src_blend_cfg->blend_src_stride);
sc_blend_src_pos(sc,
src_blend_cfg->blend_src_h_pos,
src_blend_cfg->blend_src_v_pos);
sc_blend_src_wh(sc,
src_blend_cfg->blend_src_crop_width,
src_blend_cfg->blend_src_crop_height);
}
}
