linux-kernel - Re: [PATCH AUTOSEL 5.12 090/116] ASoC: rt286: Generalize support for ALC3263 codec

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <55cb81cd-4eb9-049a-abf6-d4628ac8cb34@gatech.edu>
Date:   Fri, 7 May 2021 00:34:29 -0400
From:   David Ward <david.ward@...ech.edu>
To:     Sasha Levin <sashal@...nel.org>, linux-kernel@...r.kernel.org,
        stable@...r.kernel.org
Cc:     Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>,
        Mark Brown <broonie@...nel.org>, alsa-devel@...a-project.org
Subject: Re: [PATCH AUTOSEL 5.12 090/116] ASoC: rt286: Generalize support for
 ALC3263 codec

On 5/5/21 12:30 PM, Sasha Levin wrote:
> From: David Ward <david.ward@...ech.edu>
>
> [ Upstream commit aa2f9c12821e6a4ba1df4fb34a3dbc6a2a1ee7fe ]
>
> The ALC3263 codec on the XPS 13 9343 is also found on the Latitude 13 7350
> and Venue 11 Pro 7140. They require the same handling for the combo jack to
> work with a headset: GPIO pin 6 must be set.
>
> The HDA driver always sets this pin on the ALC3263, which it distinguishes
> by the codec vendor/device ID 0x10ec0288 and PCI subsystem vendor ID 0x1028
> (Dell). The ASoC driver does not use PCI, so adapt this check to use DMI to
> determine if Dell is the system vendor.

For this patch to be useful, commit cd8499d5c03b ("ASoC: rt286: Make 
RT286_SET_GPIO_* readable and writable") from the same series is needed 
as well, which fixed the regmap config.

(The same comment is true for all stable branches.)

Thank you,

David

>
> BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=150601
> BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=205961
> Signed-off-by: David Ward <david.ward@...ech.edu>
> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@...ux.intel.com>
> Link: https://lore.kernel.org/r/20210418134658.4333-6-david.ward@gatech.edu
> Signed-off-by: Mark Brown <broonie@...nel.org>
> Signed-off-by: Sasha Levin <sashal@...nel.org>
> ---
>   sound/soc/codecs/rt286.c | 20 ++++++++++----------
>   1 file changed, 10 insertions(+), 10 deletions(-)
>
> diff --git a/sound/soc/codecs/rt286.c b/sound/soc/codecs/rt286.c
> index 8abe232ca4a4..2f18f5114f7e 100644
> --- a/sound/soc/codecs/rt286.c
> +++ b/sound/soc/codecs/rt286.c
> @@ -1117,12 +1117,11 @@ static const struct dmi_system_id force_combo_jack_table[] = {
>   	{ }
>   };
>   
> -static const struct dmi_system_id dmi_dell_dino[] = {
> +static const struct dmi_system_id dmi_dell[] = {
>   	{
> -		.ident = "Dell Dino",
> +		.ident = "Dell",
>   		.matches = {
>   			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
> -			DMI_MATCH(DMI_PRODUCT_NAME, "XPS 13 9343")
>   		}
>   	},
>   	{ }
> @@ -1133,7 +1132,7 @@ static int rt286_i2c_probe(struct i2c_client *i2c,
>   {
>   	struct rt286_platform_data *pdata = dev_get_platdata(&i2c->dev);
>   	struct rt286_priv *rt286;
> -	int i, ret, val;
> +	int i, ret, vendor_id;
>   
>   	rt286 = devm_kzalloc(&i2c->dev,	sizeof(*rt286),
>   				GFP_KERNEL);
> @@ -1149,14 +1148,15 @@ static int rt286_i2c_probe(struct i2c_client *i2c,
>   	}
>   
>   	ret = regmap_read(rt286->regmap,
> -		RT286_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID), &val);
> +		RT286_GET_PARAM(AC_NODE_ROOT, AC_PAR_VENDOR_ID), &vendor_id);
>   	if (ret != 0) {
>   		dev_err(&i2c->dev, "I2C error %d\n", ret);
>   		return ret;
>   	}
> -	if (val != RT286_VENDOR_ID && val != RT288_VENDOR_ID) {
> +	if (vendor_id != RT286_VENDOR_ID && vendor_id != RT288_VENDOR_ID) {
>   		dev_err(&i2c->dev,
> -			"Device with ID register %#x is not rt286\n", val);
> +			"Device with ID register %#x is not rt286\n",
> +			vendor_id);
>   		return -ENODEV;
>   	}
>   
> @@ -1180,8 +1180,8 @@ static int rt286_i2c_probe(struct i2c_client *i2c,
>   	if (pdata)
>   		rt286->pdata = *pdata;
>   
> -	if (dmi_check_system(force_combo_jack_table) ||
> -		dmi_check_system(dmi_dell_dino))
> +	if ((vendor_id == RT288_VENDOR_ID && dmi_check_system(dmi_dell)) ||
> +		dmi_check_system(force_combo_jack_table))
>   		rt286->pdata.cbj_en = true;
>   
>   	regmap_write(rt286->regmap, RT286_SET_AUDIO_POWER, AC_PWRST_D3);
> @@ -1220,7 +1220,7 @@ static int rt286_i2c_probe(struct i2c_client *i2c,
>   	regmap_update_bits(rt286->regmap, RT286_DEPOP_CTRL3, 0xf777, 0x4737);
>   	regmap_update_bits(rt286->regmap, RT286_DEPOP_CTRL4, 0x00ff, 0x003f);
>   
> -	if (dmi_check_system(dmi_dell_dino)) {
> +	if (vendor_id == RT288_VENDOR_ID && dmi_check_system(dmi_dell)) {
>   		regmap_update_bits(rt286->regmap,
>   			RT286_SET_GPIO_MASK, 0x40, 0x40);
>   		regmap_update_bits(rt286->regmap,