<pre>
Hi, Shuijing:

On Thu, 2023-07-20 at 16:26 +0800, Shuijing Li wrote:
> Due to the difference of HW, different dividers need to be set.
>
> Signed-off-by: Shuijing Li <shuijing.li@mediatek.com>
> Signed-off-by: Jitao Shi <jitao.shi@mediatek.com>
> ---
> Changes in v3:
> Separate these two things into two different patches.
> per suggestion from the previous thread:
>
https://lore.kernel.org/lkml/e2ad22bcba31797f38a12a488d4246a01bf0cb2e.camel@mediatek.com/
> Changes in v2:
> - change the variables' name to be more descriptive
> - add a comment that describes the function of
> mtk_dp_audio_sample_arrange
> - reduce indentation by doing the inverse check
> - add a definition of some bits
> - add support for mediatek, mt8188-edp-tx
> per suggestion from the previous thread:
>
https://lore.kernel.org/lkml/ac0fcec9-a2fe-06cc-c727-189ef7babe9c@collabora.com/
> ---
> drivers/gpu/drm/mediatek/mtk_dp.c | 7 ++++++-
> drivers/gpu/drm/mediatek/mtk_dp_reg.h | 1 +
> 2 files changed, 7 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/gpu/drm/mediatek/mtk_dp.c
> b/drivers/gpu/drm/mediatek/mtk_dp.c
> index d8cda83d6fef..8e1a13ab2ba2 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dp.c
> +++ b/drivers/gpu/drm/mediatek/mtk_dp.c
> @@ -140,6 +140,7 @@ struct mtk_dp_data {
> const struct mtk_dp_efuse_fmt *efuse_fmt;
> bool audio_supported;
> bool audio_pkt_in_hblank_area;
> +u16 audio_m_div2_bit;
> };
>
> static const struct mtk_dp_efuse_fmt
> mt8195_edp_efuse_fmt[MTK_DP_CAL_MAX] = {
> @@ -648,7 +649,7 @@ static void
> mtk_dp_audio_sdp_asp_set_channels(struct mtk_dp *mtk_dp,
> static void mtk_dp_audio_set_divider(struct mtk_dp *mtk_dp)
> {
> mtk_dp_update_bits(mtk_dp, MTK_DP_ENC0_P0_30BC,
> - AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_2,
> + mtk_dp->data->audio_m_div2_bit,
> AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MASK);
> }
>
> @@ -2636,6 +2637,7 @@ static const struct mtk_dp_data mt8188_edp_data
> = {
> .efuse_fmt = mt8195_edp_efuse_fmt,
> .audio_supported = false,
> .audio_pkt_in_hblank_area = false,
> +.audio_m_div2_bit =
> MT8188_AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_2,
> };
>
> static const struct mtk_dp_data mt8188_dp_data = {
> @@ -2644,6 +2646,7 @@ static const struct mtk_dp_data mt8188_dp_data
> = {
> .efuse_fmt = mt8195_dp_efuse_fmt,
> .audio_supported = true,
> .audio_pkt_in_hblank_area = true,
> +.audio_m_div2_bit =
> MT8188_AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_2,
> };
>
> static const struct mtk_dp_data mt8195_edp_data = {
> @@ -2652,6 +2655,7 @@ static const struct mtk_dp_data mt8195_edp_data
> = {
> .efuse_fmt = mt8195_edp_efuse_fmt,
> .audio_supported = false,
> .audio_pkt_in_hblank_area = false,
> +.audio_m_div2_bit = AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_2,
> };
>
> static const struct mtk_dp_data mt8195_dp_data = {
> @@ -2660,6 +2664,7 @@ static const struct mtk_dp_data mt8195_dp_data
> = {
> .efuse_fmt = mt8195_dp_efuse_fmt,
> .audio_supported = true,
> .audio_pkt_in_hblank_area = false,
> +.audio_m_div2_bit = AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_2,
> };
>
> static const struct of_device_id mtk_dp_of_match[] = {
> diff --git a/drivers/gpu/drm/mediatek/mtk_dp_reg.h
> b/drivers/gpu/drm/mediatek/mtk_dp_reg.h
> index f38d6ff12afe..6d7f0405867e 100644
> --- a/drivers/gpu/drm/mediatek/mtk_dp_reg.h
> +++ b/drivers/gpu/drm/mediatek/mtk_dp_reg.h
> @@ -162,6 +162,7 @@
> #define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MUL_2(1 << 8)
> #define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MUL_4(2 << 8)
> #define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_MUL_8(3 << 8)
> +#define MT8188_AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_2(4 <<
> 8)

For AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_*, add prefix 'MT8195_'.
And list all configuration for MT8188.

Regards,
CK

> #define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_2(5 << 8)
> #define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_4(6 << 8)
> #define AUDIO_M_CODE_MULT_DIV_SEL_DP_ENC0_P0_DIV_8(7 << 8)

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