diff options
Diffstat (limited to 'drivers/gpu/drm/mediatek/mtk_ethdr.c')
| -rw-r--r-- | drivers/gpu/drm/mediatek/mtk_ethdr.c | 46 |
1 files changed, 30 insertions, 16 deletions
diff --git a/drivers/gpu/drm/mediatek/mtk_ethdr.c b/drivers/gpu/drm/mediatek/mtk_ethdr.c index 156c6ff547e8..9dfd13d32dfa 100644 --- a/drivers/gpu/drm/mediatek/mtk_ethdr.c +++ b/drivers/gpu/drm/mediatek/mtk_ethdr.c @@ -50,7 +50,6 @@ #define MIXER_INX_MODE_BYPASS 0 #define MIXER_INX_MODE_EVEN_EXTEND 1 -#define DEFAULT_9BIT_ALPHA 0x100 #define MIXER_ALPHA_AEN BIT(8) #define MIXER_ALPHA 0xff #define ETHDR_CLK_NUM 13 @@ -154,22 +153,38 @@ void mtk_ethdr_layer_config(struct device *dev, unsigned int idx, unsigned int offset = (pending->x & 1) << 31 | pending->y << 16 | pending->x; unsigned int align_width = ALIGN_DOWN(pending->width, 2); unsigned int alpha_con = 0; + bool replace_src_a = false; dev_dbg(dev, "%s+ idx:%d", __func__, idx); if (idx >= 4) return; - if (!pending->enable) { + if (!pending->enable || !pending->width || !pending->height) { + /* + * instead of disabling layer with MIX_SRC_CON directly + * set the size to 0 to avoid screen shift due to mixer + * mode switch (hardware behavior) + */ mtk_ddp_write(cmdq_pkt, 0, &mixer->cmdq_base, mixer->regs, MIX_L_SRC_SIZE(idx)); return; } - if (state->base.fb && state->base.fb->format->has_alpha) - alpha_con = MIXER_ALPHA_AEN | MIXER_ALPHA; + if (state->base.fb) { + alpha_con |= MIXER_ALPHA_AEN; + alpha_con |= state->base.alpha & MIXER_ALPHA; + } + + if (state->base.fb && !state->base.fb->format->has_alpha) { + /* + * Mixer doesn't support CONST_BLD mode, + * use a trick to make the output equivalent + */ + replace_src_a = true; + } - mtk_mmsys_mixer_in_config(priv->mmsys_dev, idx + 1, alpha_con ? false : true, - DEFAULT_9BIT_ALPHA, + mtk_mmsys_mixer_in_config(priv->mmsys_dev, idx + 1, replace_src_a, + MIXER_ALPHA, pending->x & 1 ? MIXER_INX_MODE_EVEN_EXTEND : MIXER_INX_MODE_BYPASS, align_width / 2 - 1, cmdq_pkt); @@ -325,25 +340,24 @@ static int mtk_ethdr_probe(struct platform_device *pdev) if (priv->irq) { ret = devm_request_irq(dev, priv->irq, mtk_ethdr_irq_handler, IRQF_TRIGGER_NONE, dev_name(dev), priv); - if (ret < 0) { - dev_err(dev, "Failed to request irq %d: %d\n", priv->irq, ret); - return ret; - } + if (ret < 0) + return dev_err_probe(dev, ret, + "Failed to request irq %d\n", + priv->irq); } priv->reset_ctl = devm_reset_control_array_get_optional_exclusive(dev); - if (IS_ERR(priv->reset_ctl)) { - dev_err_probe(dev, PTR_ERR(priv->reset_ctl), "cannot get ethdr reset control\n"); - return PTR_ERR(priv->reset_ctl); - } + if (IS_ERR(priv->reset_ctl)) + return dev_err_probe(dev, PTR_ERR(priv->reset_ctl), + "cannot get ethdr reset control\n"); platform_set_drvdata(pdev, priv); ret = component_add(dev, &mtk_ethdr_component_ops); if (ret) - dev_notice(dev, "Failed to add component: %d\n", ret); + return dev_err_probe(dev, ret, "Failed to add component\n"); - return ret; + return 0; } static void mtk_ethdr_remove(struct platform_device *pdev) |