linux-kernel - [PATCH v2 02/12] ASoC: codecs: rx-macro: handle swr

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Date:   Tue,  6 Sep 2022 18:01:02 +0100
From:   Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
To:     broonie@...nel.org
Cc:     lgirdwood@...il.com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, bgoswami@...cinc.com,
        perex@...ex.cz, tiwai@...e.com, linux-arm-msm@...r.kernel.org,
        alsa-devel@...a-project.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
Subject: [PATCH v2 02/12] ASoC: codecs: rx-macro: handle swr_reset correctly

Reset soundwire block on frame sync generation clock reset.
Without this we are hitting read/write timeouts randomly during
runtime pm. Along with this remove a swr_reset redundant flag.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 sound/soc/codecs/lpass-rx-macro.c | 16 +++++-----------
 1 file changed, 5 insertions(+), 11 deletions(-)

diff --git a/sound/soc/codecs/lpass-rx-macro.c b/sound/soc/codecs/lpass-rx-macro.c
index 3143f9cd7277..338e3f0cad12 100644
--- a/sound/soc/codecs/lpass-rx-macro.c
+++ b/sound/soc/codecs/lpass-rx-macro.c
@@ -596,7 +596,6 @@ struct rx_macro {
 	int rx_port_value[RX_MACRO_PORTS_MAX];
 	u16 prim_int_users[INTERP_MAX];
 	int rx_mclk_users;
-	bool reset_swr;
 	int clsh_users;
 	int rx_mclk_cnt;
 	bool is_ear_mode_on;
@@ -3442,18 +3441,15 @@ static int swclk_gate_enable(struct clk_hw *hw)
 	}
 
 	rx_macro_mclk_enable(rx, true);
-	if (rx->reset_swr)
-		regmap_update_bits(rx->regmap, CDC_RX_CLK_RST_CTRL_SWR_CONTROL,
-				   CDC_RX_SWR_RESET_MASK,
-				   CDC_RX_SWR_RESET);
+	regmap_update_bits(rx->regmap, CDC_RX_CLK_RST_CTRL_SWR_CONTROL,
+			   CDC_RX_SWR_RESET_MASK,
+			   CDC_RX_SWR_RESET);
 
 	regmap_update_bits(rx->regmap, CDC_RX_CLK_RST_CTRL_SWR_CONTROL,
 			   CDC_RX_SWR_CLK_EN_MASK, 1);
 
-	if (rx->reset_swr)
-		regmap_update_bits(rx->regmap, CDC_RX_CLK_RST_CTRL_SWR_CONTROL,
-				   CDC_RX_SWR_RESET_MASK, 0);
-	rx->reset_swr = false;
+	regmap_update_bits(rx->regmap, CDC_RX_CLK_RST_CTRL_SWR_CONTROL,
+			   CDC_RX_SWR_RESET_MASK, 0);
 
 	return 0;
 }
@@ -3579,7 +3575,6 @@ static int rx_macro_probe(struct platform_device *pdev)
 
 	dev_set_drvdata(dev, rx);
 
-	rx->reset_swr = true;
 	rx->dev = dev;
 
 	/* set MCLK and NPL rates */
@@ -3701,7 +3696,6 @@ static int __maybe_unused rx_macro_runtime_resume(struct device *dev)
 	}
 	regcache_cache_only(rx->regmap, false);
 	regcache_sync(rx->regmap);
-	rx->reset_swr = true;
 
 	return 0;
 err_fsgen:
-- 
2.21.0