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[2403:580a:80ed:0:4835:5a07:49e7:f115]) by smtp.gmail.com with ESMTPSA id 41be03b00d2f7-ae1ee4febb2sm787325a12.51.2025.02.18.00.37.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 18 Feb 2025 00:37:43 -0800 (PST) From: James Calligeros Date: Tue, 18 Feb 2025 18:35:48 +1000 Subject: [PATCH v2 14/29] ASoC: tas2770: expose die temp to hwmon Precedence: bulk X-Mailing-List: linux-hwmon@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Message-Id: <20250218-apple-codec-changes-v2-14-932760fd7e07@gmail.com> References: <20250218-apple-codec-changes-v2-0-932760fd7e07@gmail.com> In-Reply-To: <20250218-apple-codec-changes-v2-0-932760fd7e07@gmail.com> To: Liam Girdwood , Mark Brown , Jaroslav Kysela , Takashi Iwai , Shenghao Ding , Kevin Lu , Baojun Xu , Dan Murphy , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shi Fu , Jean Delvare , Guenter Roeck Cc: Alyssa Rosenzweig , =?utf-8?q?Martin_Povi=C5=A1er?= , Hector Martin , linux-sound@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, asahi@lists.linux.dev, linux-hwmon@vger.kernel.org, James Calligeros X-Mailer: b4 0.14.2 X-Developer-Signature: v=1; a=openpgp-sha256; l=2665; i=jcalligeros99@gmail.com; h=from:subject:message-id; bh=C+X0x7uIf65/mbXTMCE86W3v0h9GaMeMdchW1VENrnc=; b=owGbwMvMwCV2xczoYuD3ygTG02pJDOlb3BLPuG0q9yy6/fZmd3+EAu+GtU/Dbj682L5v0QV31 j+H4pfpdJSyMIhxMciKKbJsaBLymG3EdrNfpHIvzBxWJpAhDFycAjARYTOG/x7tj36wGtt9vjnr 6e8XtYfTOY4EnTacpTwnrt7+wgn/w7oMf+Xc35/MLVDkbjiW6Bx9z3pt3LuKlozZ57b71rBZvRK 7xAIA X-Developer-Key: i=jcalligeros99@gmail.com; a=openpgp; fpr=B08212489B3206D98F1479BDD43632D151F77960 Create and register a hwmon device to export the die temperature to the hwmon interface Signed-off-by: James Calligeros --- sound/soc/codecs/tas2770.c | 69 +++++++++++++++++++++++++ 1 file changed, 69 insertions(+) diff --git a/sound/soc/codecs/tas2770.c b/sound/soc/codecs/tas2770.c index 84066884d36be8d41d83bca5680e9f683c420d78..fee99db904a5885d740c1cfe8ce2645a963c6e1d 100644 --- a/sound/soc/codecs/tas2770.c +++ b/sound/soc/codecs/tas2770.c @@ -12,6 +12,7 @@ #include #include #include +#include #include #include #include @@ -537,6 +538,61 @@ static struct attribute *tas2770_sysfs_attrs[] = { }; ATTRIBUTE_GROUPS(tas2770_sysfs); +#if defined(CONFIG_HWMON) +static umode_t tas2770_hwmon_is_visible(const void *data, + enum hwmon_sensor_types type, u32 attr, + int channel) +{ + if (type != hwmon_temp) + return 0; + + switch (attr) { + case hwmon_temp_input: + return 0444; + default: + break; + } + + return 0; +} + +static int tas2770_hwmon_read(struct device *dev, + enum hwmon_sensor_types type, + u32 attr, int channel, long *val) +{ + struct tas2770_priv *tas2770 = i2c_get_clientdata(to_i2c_client(dev)); + int ret; + + switch (attr) { + case hwmon_temp_input: + ret = tas2770_read_die_temp(tas2770, (int *)val); + if (!ret) + *val *= 1000; + break; + default: + ret = -EOPNOTSUPP; + break; + } + + return ret; +} + +static const struct hwmon_channel_info *const tas2770_hwmon_info[] = { + HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT), + NULL +}; + +static const struct hwmon_ops tas2770_hwmon_ops = { + .is_visible = tas2770_hwmon_is_visible, + .read = tas2770_hwmon_read, +}; + +static const struct hwmon_chip_info tas2770_hwmon_chip_info = { + .ops = &tas2770_hwmon_ops, + .info = tas2770_hwmon_info, +}; +#endif + static const struct regmap_config tas2770_i2c_regmap; static int tas2770_codec_probe(struct snd_soc_component *component) @@ -768,6 +824,19 @@ static int tas2770_i2c_probe(struct i2c_client *client) if (result) dev_err(tas2770->dev, "Register codec failed.\n"); + if (IS_REACHABLE(CONFIG_HWMON)) { + struct device *hwmon; + + hwmon = devm_hwmon_device_register_with_info(&client->dev, "tas2770", + tas2770, + &tas2770_hwmon_chip_info, + NULL); + if (IS_ERR(hwmon)) { + return dev_err_probe(&client->dev, PTR_ERR(hwmon), + "Failed to register temp sensor\n"); + } + } + return result; }