linux-kernel - [PATCH v2 01/12] ASoC: codecs: wsa-macro: handle swr

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Date:   Tue,  6 Sep 2022 18:01:01 +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 01/12] ASoC: codecs: wsa-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.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@...aro.org>
---
 sound/soc/codecs/lpass-wsa-macro.c | 17 ++++-------------
 1 file changed, 4 insertions(+), 13 deletions(-)

diff --git a/sound/soc/codecs/lpass-wsa-macro.c b/sound/soc/codecs/lpass-wsa-macro.c
index 27da6c6c3c5a..130d25b334ff 100644
--- a/sound/soc/codecs/lpass-wsa-macro.c
+++ b/sound/soc/codecs/lpass-wsa-macro.c
@@ -338,7 +338,6 @@ struct wsa_macro {
 	int ec_hq[WSA_MACRO_RX1 + 1];
 	u16 prim_int_users[WSA_MACRO_RX1 + 1];
 	u16 wsa_mclk_users;
-	bool reset_swr;
 	unsigned long active_ch_mask[WSA_MACRO_MAX_DAIS];
 	unsigned long active_ch_cnt[WSA_MACRO_MAX_DAIS];
 	int rx_port_value[WSA_MACRO_RX_MAX];
@@ -2271,23 +2270,16 @@ static int wsa_swrm_clock(struct wsa_macro *wsa, bool enable)
 		wsa_macro_mclk_enable(wsa, true);
 
 		/* reset swr ip */
-		if (wsa->reset_swr)
-			regmap_update_bits(regmap,
-					   CDC_WSA_CLK_RST_CTRL_SWR_CONTROL,
-					   CDC_WSA_SWR_RST_EN_MASK,
-					   CDC_WSA_SWR_RST_ENABLE);
+		regmap_update_bits(regmap, CDC_WSA_CLK_RST_CTRL_SWR_CONTROL,
+				   CDC_WSA_SWR_RST_EN_MASK, CDC_WSA_SWR_RST_ENABLE);
 
 		regmap_update_bits(regmap, CDC_WSA_CLK_RST_CTRL_SWR_CONTROL,
 				   CDC_WSA_SWR_CLK_EN_MASK,
 				   CDC_WSA_SWR_CLK_ENABLE);
 
 		/* Bring out of reset */
-		if (wsa->reset_swr)
-			regmap_update_bits(regmap,
-					   CDC_WSA_CLK_RST_CTRL_SWR_CONTROL,
-					   CDC_WSA_SWR_RST_EN_MASK,
-					   CDC_WSA_SWR_RST_DISABLE);
-		wsa->reset_swr = false;
+		regmap_update_bits(regmap, CDC_WSA_CLK_RST_CTRL_SWR_CONTROL,
+				   CDC_WSA_SWR_RST_EN_MASK, CDC_WSA_SWR_RST_DISABLE);
 	} else {
 		regmap_update_bits(regmap, CDC_WSA_CLK_RST_CTRL_SWR_CONTROL,
 				   CDC_WSA_SWR_CLK_EN_MASK, 0);
@@ -2431,7 +2423,6 @@ static int wsa_macro_probe(struct platform_device *pdev)
 
 	dev_set_drvdata(dev, wsa);
 
-	wsa->reset_swr = true;
 	wsa->dev = dev;
 
 	/* set MCLK and NPL rates */
-- 
2.21.0