From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 69B981D301 for ; Tue, 25 Jul 2023 11:17:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id E1E0BC433C7; Tue, 25 Jul 2023 11:17:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1690283866; bh=HUEROur+Iwzh2YYN2HVMhiVxBAQM3p9BMmwCz5lnvrU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=XBpd+/YiqXNGywq6nFq0XJETi1QZ/vBU4084NweEDgcZ8+xkkx7w7Tqb2YBVQWuHF rgmFHocYph34TC/A1TghHu92BHo7avx+cUpLXUnapyl+s9ComFjfBGM3M4pyDasgn/ 30Cs41D0NZS3upfSXJ3dHMOtTWTlh4bPHQ/QTuXs= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Potin Lai , Guenter Roeck , Sasha Levin Subject: [PATCH 5.10 149/509] hwmon: (adm1275) Allow setting sample averaging Date: Tue, 25 Jul 2023 12:41:28 +0200 Message-ID: <20230725104600.549802733@linuxfoundation.org> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230725104553.588743331@linuxfoundation.org> References: <20230725104553.588743331@linuxfoundation.org> User-Agent: quilt/0.67 Precedence: bulk X-Mailing-List: patches@lists.linux.dev List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit From: Potin Lai [ Upstream commit a3cd66d7cbadcc0c29884f25b754fd22699c719c ] Current driver assume PWR_AVG and VI_AVG as 1 by default, and user needs to set sample averaging via sysfs manually. This patch parses the properties "adi,power-sample-average" and "adi,volt-curr-sample-average" from device tree, and setting sample averaging during probe. Input value must be one of value in the list [1, 2, 4, 8, 16, 32, 64, 128]. Signed-off-by: Potin Lai Link: https://lore.kernel.org/r/20220302123817.27025-2-potin.lai@quantatw.com Signed-off-by: Guenter Roeck Stable-dep-of: b153a0bb4199 ("hwmon: (pmbus/adm1275) Fix problems with temperature monitoring on ADM1272") Signed-off-by: Sasha Levin --- drivers/hwmon/pmbus/adm1275.c | 40 ++++++++++++++++++++++++++++++++++- 1 file changed, 39 insertions(+), 1 deletion(-) diff --git a/drivers/hwmon/pmbus/adm1275.c b/drivers/hwmon/pmbus/adm1275.c index 0be1b5777d2f0..92eb047ff246f 100644 --- a/drivers/hwmon/pmbus/adm1275.c +++ b/drivers/hwmon/pmbus/adm1275.c @@ -475,6 +475,7 @@ static int adm1275_probe(struct i2c_client *client) int vindex = -1, voindex = -1, cindex = -1, pindex = -1; int tindex = -1; u32 shunt; + u32 avg; if (!i2c_check_functionality(client->adapter, I2C_FUNC_SMBUS_READ_BYTE_DATA @@ -687,7 +688,7 @@ static int adm1275_probe(struct i2c_client *client) if ((config & (ADM1278_VOUT_EN | ADM1278_TEMP1_EN)) != (ADM1278_VOUT_EN | ADM1278_TEMP1_EN)) { config |= ADM1278_VOUT_EN | ADM1278_TEMP1_EN; - ret = i2c_smbus_write_byte_data(client, + ret = i2c_smbus_write_word_data(client, ADM1275_PMON_CONFIG, config); if (ret < 0) { @@ -756,6 +757,43 @@ static int adm1275_probe(struct i2c_client *client) return -ENODEV; } + if (data->have_power_sampling && + of_property_read_u32(client->dev.of_node, + "adi,power-sample-average", &avg) == 0) { + if (!avg || avg > ADM1275_SAMPLES_AVG_MAX || + BIT(__fls(avg)) != avg) { + dev_err(&client->dev, + "Invalid number of power samples"); + return -EINVAL; + } + ret = adm1275_write_pmon_config(data, client, true, + ilog2(avg)); + if (ret < 0) { + dev_err(&client->dev, + "Setting power sample averaging failed with error %d", + ret); + return ret; + } + } + + if (of_property_read_u32(client->dev.of_node, + "adi,volt-curr-sample-average", &avg) == 0) { + if (!avg || avg > ADM1275_SAMPLES_AVG_MAX || + BIT(__fls(avg)) != avg) { + dev_err(&client->dev, + "Invalid number of voltage/current samples"); + return -EINVAL; + } + ret = adm1275_write_pmon_config(data, client, false, + ilog2(avg)); + if (ret < 0) { + dev_err(&client->dev, + "Setting voltage and current sample averaging failed with error %d", + ret); + return ret; + } + } + if (voindex < 0) voindex = vindex; if (vindex >= 0) { -- 2.39.2