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From:   Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
To:     <agross@kernel.org>, <andersson@kernel.org>, <lgirdwood@gmail.com>,
        <broonie@kernel.org>, <robh+dt@kernel.org>,
        <quic_plai@quicinc.com>, <bgoswami@quicinc.com>, <perex@perex.cz>,
        <tiwai@suse.com>, <srinivas.kandagatla@linaro.org>,
        <quic_rohkumar@quicinc.com>, <linux-arm-msm@vger.kernel.org>,
        <alsa-devel@alsa-project.org>, <linux-kernel@vger.kernel.org>,
        <swboyd@chromium.org>, <judyhsiao@chromium.org>,
        <devicetree@vger.kernel.org>
CC:     Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
Subject: [RESEND] Asoc: qcom: lpass-cpu: Mark HDMI TX parity register as volatile
Date:   Sat, 15 Oct 2022 14:48:50 +0530
Message-ID: <1665825530-7593-1-git-send-email-quic_srivasam@quicinc.com>
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Update LPASS_HDMI_TX_PARITY_ADDR register as volatile, to fix
dp audio failures observed with some of external monitors.

Fixes: 7cb37b7bd0d3 ("ASoC: qcom: Add support for lpass hdmi driver")

Signed-off-by: Srinivasa Rao Mandadapu <quic_srivasam@quicinc.com>
---
    -- Resending this patch as it was posted long back and forgot to track.

 sound/soc/qcom/lpass-cpu.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/sound/soc/qcom/lpass-cpu.c b/sound/soc/qcom/lpass-cpu.c
index 99a3b44..5435384 100644
--- a/sound/soc/qcom/lpass-cpu.c
+++ b/sound/soc/qcom/lpass-cpu.c
@@ -784,6 +784,8 @@ static bool lpass_hdmi_regmap_volatile(struct device *dev, unsigned int reg)
 		return true;
 	if (reg == LPASS_HDMI_TX_VBIT_CTL_ADDR(v))
 		return true;
+	if (reg == LPASS_HDMI_TX_PARITY_ADDR(v))
+		return true;
 
 	for (i = 0; i < v->hdmi_rdma_channels; ++i) {
 		if (reg == LPAIF_HDMI_RDMACURR_REG(v, i))
-- 
2.7.4