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Linux x86_64; rv:102.0) Gecko/20100101 Thunderbird/102.12.0 Subject: Re: [PATCH v3,3/3] drm/mediatek: dp: Add the audio divider to mtk_dp_data struct Content-Language: en-US To: Alexandre Mergnat , Shuijing Li , chunkuang.hu@kernel.org, p.zabel@pengutronix.de, airlied@gmail.com, daniel@ffwll.ch, robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org, conor+dt@kernel.org, matthias.bgg@gmail.com, jitao.shi@mediatek.com Cc: dri-devel@lists.freedesktop.org, linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Project_Global_Chrome_Upstream_Group@mediatek.com References: <20230720082604.18618-1-shuijing.li@mediatek.com> <20230720082604.18618-4-shuijing.li@mediatek.com> <44cc9cc5-7dce-f7a2-f077-b62d7851ee12@baylibre.com> From: AngeloGioacchino Del Regno In-Reply-To: <44cc9cc5-7dce-f7a2-f077-b62d7851ee12@baylibre.com> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230720_045435_758802_2A0C0283 X-CRM114-Status: GOOD ( 20.13 ) X-BeenThere: linux-mediatek@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "Linux-mediatek" Errors-To: linux-mediatek-bounces+linux-mediatek=archiver.kernel.org@lists.infradead.org Il 20/07/23 12:14, Alexandre Mergnat ha scritto: > > > On 20/07/2023 10:26, Shuijing Li wrote: >> Due to the difference of HW, different dividers need to be set. >> >> Signed-off-by: Shuijing Li >> Signed-off-by: Jitao Shi >> --- >> 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) > > IMO, it's a bit weird to have SoC specific define in the generic header. > Are you sure this bit is only available for MT8188 ? > Eh, the P0_DIV2 bit is 5<<8 for MT8195, while for 8188 it's 4<<8, clearly :-) >>   #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) > > Reviewed-by: Alexandre Mergnat >