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charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240710-asoc-wsa88xx-version-v1-1-f1c54966ccde@linaro.org> References: <20240710-asoc-wsa88xx-version-v1-0-f1c54966ccde@linaro.org> In-Reply-To: <20240710-asoc-wsa88xx-version-v1-0-f1c54966ccde@linaro.org> To: Srinivas Kandagatla , Banajit Goswami , Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai Cc: alsa-devel@alsa-project.org, linux-arm-msm@vger.kernel.org, linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=1000; i=krzysztof.kozlowski@linaro.org; h=from:subject:message-id; bh=+8JLB/iozDF8e+w8VM/0NLmlF4J+t2rdpXXcSD/AIOA=; b=owEBbQKS/ZANAwAKAcE3ZuaGi4PXAcsmYgBmjpIkusTqm9cHV9sziB2w+LwJj8kGVAW/ZbhjT NACmdqp9yaJAjMEAAEKAB0WIQTd0mIoPREbIztuuKjBN2bmhouD1wUCZo6SJAAKCRDBN2bmhouD 1ymCD/9iwi9TkwR7xPLUX40Mlnv4dq9p3GKVP1NC0C2tDNGbYpr7aM/EGwdodgWD5CWNsZnw9BT gxDyZ1xojOFS1zTZGyfCfkPrK1S2rBM1nn+h0oyGVWZ4JUZMAq6TMqVkOSY5ugS/Aq2JIzGc1Lf 9Oea9NGDKvvVxnY5t85fRmHhiUbSSjpIpdu67FVamw1fO7hzJ8Fz1mqcoyrkuqG5RCqgRCimvC1 FPbOOSrkL9GElTjBP59MN2rR1W84dg5JtV+LLetvzb3B2mWSvNofgqovM6U6/gov4Zmqz+FbeCb cx6T3OOBWFjn3iamR+JzoRtyWNugjagb4+qafu1ANK9p6HI5igQH4Vs+QSgOQFTEWKn39WDUSVO Ozj1vUoNPw5IjqScYXaGAVWMUsRis0tMN/jQTdGowWj3HEQSfgRckDQDSoDE0m3G0MqFTEzB3LB lEE+GJk/Ud52A6DQ757eWlBPXzWIY/uQVhwx0mgSH9uVBzHp8QTxj1ZqhGQqwiIlJgq+7P2QwAY XQ8YMa9kPSDjwrBqiZq4kc652/WHJxEHQ+vPqJF1MTh6QLOnR5Uijo5xmBaJg9iSUwS7CVaoZHP hY/d4ilfUNOLFu1LWv6C8NNROB08OLpNYQyQSO2k5FLsRPTPQzNaMseS6U0C7rw5ipF2AwrLYM/ F6RWcahzYIK+4Fg== X-Developer-Key: i=krzysztof.kozlowski@linaro.org; a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Driver does not use the device version after reading it from the registers, so simplify by dropping unneeded code. Signed-off-by: Krzysztof Kozlowski --- sound/soc/codecs/wsa881x.c | 2 -- 1 file changed, 2 deletions(-) diff --git a/sound/soc/codecs/wsa881x.c b/sound/soc/codecs/wsa881x.c index 1253695bebd8..22df50041104 100644 --- a/sound/soc/codecs/wsa881x.c +++ b/sound/soc/codecs/wsa881x.c @@ -680,7 +680,6 @@ struct wsa881x_priv { * For backwards compatibility. */ unsigned int sd_n_val; - int version; int active_ports; bool port_prepared[WSA881X_MAX_SWR_PORTS]; bool port_enable[WSA881X_MAX_SWR_PORTS]; @@ -691,7 +690,6 @@ static void wsa881x_init(struct wsa881x_priv *wsa881x) struct regmap *rm =3D wsa881x->regmap; unsigned int val =3D 0; =20 - regmap_read(rm, WSA881X_CHIP_ID1, &wsa881x->version); regmap_register_patch(wsa881x->regmap, wsa881x_rev_2_0, ARRAY_SIZE(wsa881x_rev_2_0)); =20 --=20 2.43.0 From nobody Wed Dec 17 12:13:29 2025 Received: from mail-lj1-f181.google.com (mail-lj1-f181.google.com [209.85.208.181]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id DD88C193082 for ; 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B If reading version and variant from registers fails (which is unlikely but possible, because it is a read over bus), the driver will proceed and perform device configuration based on uninitialized stack variables. Handle it a bit better - bail out without doing any init and failing the update status Soundwire callback. Signed-off-by: Krzysztof Kozlowski --- sound/soc/codecs/wsa883x.c | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) diff --git a/sound/soc/codecs/wsa883x.c b/sound/soc/codecs/wsa883x.c index f5a15f0e891e..60b78560f4b7 100644 --- a/sound/soc/codecs/wsa883x.c +++ b/sound/soc/codecs/wsa883x.c @@ -997,15 +997,19 @@ static const struct reg_sequence reg_init[] =3D { {WSA883X_GMAMP_SUP1, 0xE2}, }; =20 -static void wsa883x_init(struct wsa883x_priv *wsa883x) +static int wsa883x_init(struct wsa883x_priv *wsa883x) { struct regmap *regmap =3D wsa883x->regmap; - int variant, version; + int variant, version, ret; =20 - regmap_read(regmap, WSA883X_OTP_REG_0, &variant); + ret =3D regmap_read(regmap, WSA883X_OTP_REG_0, &variant); + if (ret) + return ret; wsa883x->variant =3D variant & WSA883X_ID_MASK; =20 - regmap_read(regmap, WSA883X_CHIP_ID0, &version); + ret =3D regmap_read(regmap, WSA883X_CHIP_ID0, &version); + if (ret) + return ret; wsa883x->version =3D version; =20 switch (wsa883x->variant) { @@ -1040,6 +1044,8 @@ static void wsa883x_init(struct wsa883x_priv *wsa883x) WSA883X_DRE_OFFSET_MASK, wsa883x->comp_offset); } + + return 0; } =20 static int wsa883x_update_status(struct sdw_slave *slave, @@ -1048,7 +1054,7 @@ static int wsa883x_update_status(struct sdw_slave *sl= ave, struct wsa883x_priv *wsa883x =3D dev_get_drvdata(&slave->dev); =20 if (status =3D=3D SDW_SLAVE_ATTACHED && slave->dev_num > 0) - wsa883x_init(wsa883x); + return wsa883x_init(wsa883x); =20 return 0; } --=20 2.43.0 From nobody Wed Dec 17 12:13:29 2025 Received: from mail-ej1-f52.google.com (mail-ej1-f52.google.com [209.85.218.52]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id CF27E193462 for ; Wed, 10 Jul 2024 13:52:46 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.218.52 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1720619568; cv=none; b=OZOnJC9pRnezxB+FprSYBxXTmn7tLxA1Eg3uEeGPe328C97lHMGjjl9o21MmZlVZpkx1+az4zD6luF1/zSoBNrmGhRGlwj1c2Tjqi/lF2lis5aoW7wbMf+vwkbaXpstQQArhDGglwqhdU9aJJfLvlgA/R9n8ZKJ0KtKXsmTMRXg= ARC-Message-Signature: i=1; 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Wed, 10 Jul 2024 06:52:44 -0700 (PDT) From: Krzysztof Kozlowski Date: Wed, 10 Jul 2024 15:52:32 +0200 Subject: [PATCH 3/4] ASoC: codecs: wsa883x: Simplify handling variant/version Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Message-Id: <20240710-asoc-wsa88xx-version-v1-3-f1c54966ccde@linaro.org> References: <20240710-asoc-wsa88xx-version-v1-0-f1c54966ccde@linaro.org> In-Reply-To: <20240710-asoc-wsa88xx-version-v1-0-f1c54966ccde@linaro.org> To: Srinivas Kandagatla , Banajit Goswami , Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai Cc: alsa-devel@alsa-project.org, linux-arm-msm@vger.kernel.org, linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, Krzysztof Kozlowski X-Mailer: b4 0.14.0 X-Developer-Signature: v=1; a=openpgp-sha256; l=2199; i=krzysztof.kozlowski@linaro.org; h=from:subject:message-id; bh=jEk16JQFT0IAvURH2BypgqgsTIx/BJn3KXaiR2tgfp4=; 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Signed-off-by: Krzysztof Kozlowski --- sound/soc/codecs/wsa883x.c | 17 +++++++---------- 1 file changed, 7 insertions(+), 10 deletions(-) diff --git a/sound/soc/codecs/wsa883x.c b/sound/soc/codecs/wsa883x.c index 60b78560f4b7..0692bc39308f 100644 --- a/sound/soc/codecs/wsa883x.c +++ b/sound/soc/codecs/wsa883x.c @@ -438,8 +438,6 @@ struct wsa883x_priv { struct gpio_desc *sd_n; bool port_prepared[WSA883X_MAX_SWR_PORTS]; bool port_enable[WSA883X_MAX_SWR_PORTS]; - int version; - int variant; int active_ports; int dev_mode; int comp_offset; @@ -1005,29 +1003,28 @@ static int wsa883x_init(struct wsa883x_priv *wsa883= x) ret =3D regmap_read(regmap, WSA883X_OTP_REG_0, &variant); if (ret) return ret; - wsa883x->variant =3D variant & WSA883X_ID_MASK; + variant =3D variant & WSA883X_ID_MASK; =20 ret =3D regmap_read(regmap, WSA883X_CHIP_ID0, &version); if (ret) return ret; - wsa883x->version =3D version; =20 - switch (wsa883x->variant) { + switch (variant) { case WSA8830: dev_info(wsa883x->dev, "WSA883X Version 1_%d, Variant: WSA8830\n", - wsa883x->version); 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a=openpgp; fpr=9BD07E0E0C51F8D59677B7541B93437D3B41629B Driver does not use detected variant variable past the init function, so do not store it in the state container structure. Signed-off-by: Krzysztof Kozlowski --- sound/soc/codecs/wsa884x.c | 5 ++--- 1 file changed, 2 insertions(+), 3 deletions(-) diff --git a/sound/soc/codecs/wsa884x.c b/sound/soc/codecs/wsa884x.c index a6034547b4f3..7b19df9c1728 100644 --- a/sound/soc/codecs/wsa884x.c +++ b/sound/soc/codecs/wsa884x.c @@ -703,7 +703,6 @@ struct wsa884x_priv { struct reset_control *sd_reset; bool port_prepared[WSA884X_MAX_SWR_PORTS]; bool port_enable[WSA884X_MAX_SWR_PORTS]; - unsigned int variant; int active_ports; int dev_mode; bool hw_init; @@ -1465,7 +1464,7 @@ static void wsa884x_init(struct wsa884x_priv *wsa884x) unsigned int variant =3D 0; =20 if (!regmap_read(wsa884x->regmap, WSA884X_OTP_REG_0, &variant)) - wsa884x->variant =3D variant & WSA884X_OTP_REG_0_ID_MASK; + variant =3D variant & WSA884X_OTP_REG_0_ID_MASK; =20 regmap_multi_reg_write(wsa884x->regmap, wsa884x_reg_init, ARRAY_SIZE(wsa884x_reg_init)); @@ -1474,7 +1473,7 @@ static void wsa884x_init(struct wsa884x_priv *wsa884x) wo_ctl_0 |=3D FIELD_PREP(WSA884X_ANA_WO_CTL_0_DAC_CM_CLAMP_EN_MASK, WSA884X_ANA_WO_CTL_0_DAC_CM_CLAMP_EN_MODE_SPEAKER); /* Assume that compander is enabled by default unless it is haptics sku */ - if (wsa884x->variant =3D=3D WSA884X_OTP_ID_WSA8845H) + if (variant =3D=3D WSA884X_OTP_ID_WSA8845H) wo_ctl_0 |=3D FIELD_PREP(WSA884X_ANA_WO_CTL_0_PA_AUX_GAIN_MASK, WSA884X_ANA_WO_CTL_0_PA_AUX_18_DB); else --=20 2.43.0