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linux/drivers/hwmon/ltc2991.c

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hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: ltc2991: fix register bits defines In the LTC2991, V5 and V6 channels use the low nibble of the "V5, V6, V7, and V8 Control Register" for configuration, but currently, the high nibble is defined. This patch changes the defines to use the low nibble. Fixes: 2b9ea4262ae9 ("hwmon: Add driver for ltc2991") Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com> Message-ID: <20240830111349.30531-1-paweldembicki@gmail.com> Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2024-08-30 13:13:50 +02:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: (ltc2991) Fix mixed signed/unsigned in DIV_ROUND_CLOSEST Fix use of DIV_ROUND_CLOSEST where a possibly negative value is divided by an unsigned type by casting the unsigned type to the signed type of the same size (st->r_sense_uohm[channel] has type of u32). The docs on the DIV_ROUND_CLOSEST macro explain that dividing a negative value by an unsigned type is undefined behavior. The actual behavior is that it converts both values to unsigned before doing the division, for example: int ret = DIV_ROUND_CLOSEST(-100, 3U); results in ret == 1431655732 instead of -33. Fixes: 2b9ea4262ae9 ("hwmon: Add driver for ltc2991") Signed-off-by: David Lechner <dlechner@baylibre.com> Link: https://lore.kernel.org/r/20250115-hwmon-ltc2991-fix-div-round-closest-v1-1-b4929667e457@baylibre.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2025-01-15 14:48:27 -06:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: (ltc2991) re-order conditions to fix off by one bug LTC2991_T_INT_CH_NR is 4. The st->temp_en[] array has LTC2991_MAX_CHANNEL (4) elements. Thus if "channel" is equal to LTC2991_T_INT_CH_NR then we have read one element beyond the end of the array. Flip the conditions around so that we check if "channel" is valid before using it as an array index. Fixes: 2b9ea4262ae9 ("hwmon: Add driver for ltc2991") Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Link: https://lore.kernel.org/r/Zoa9Y_UMY4_ROfhF@stanley.mountain Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2024-07-04 10:18:59 -05:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: (ltc2991) remove device reference from state Remove device reference from struct ltc2991_state since it is used only inside the init function. Pass the struct device as parameter to the init function instead. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231031095647.48376-1-antoniu.miclaus@analog.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-31 11:56:46 +02:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: (ltc2991) remove device reference from state Remove device reference from struct ltc2991_state since it is used only inside the init function. Pass the struct device as parameter to the init function instead. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231031095647.48376-1-antoniu.miclaus@analog.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-31 11:56:46 +02:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: (ltc2991) remove device reference from state Remove device reference from struct ltc2991_state since it is used only inside the init function. Pass the struct device as parameter to the init function instead. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231031095647.48376-1-antoniu.miclaus@analog.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-31 11:56:46 +02:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: (ltc2991) use device_for_each_child_node_scoped() Switch to the _scoped() version introduced in commit 365130fd47af ("device property: Introduce device_for_each_child_node_scoped()") to remove the need for manual calling of fwnode_handle_put() in the paths where the code exits the loop early. Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com> Link: https://lore.kernel.org/r/20240404-hwmon_device_for_each_child_node_scoped-v1-1-53997abde43c@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2024-04-04 13:13:27 +02:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: (ltc2991) use device_for_each_child_node_scoped() Switch to the _scoped() version introduced in commit 365130fd47af ("device property: Introduce device_for_each_child_node_scoped()") to remove the need for manual calling of fwnode_handle_put() in the paths where the code exits the loop early. Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com> Link: https://lore.kernel.org/r/20240404-hwmon_device_for_each_child_node_scoped-v1-1-53997abde43c@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2024-04-04 13:13:27 +02:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: (ltc2991) use device_for_each_child_node_scoped() Switch to the _scoped() version introduced in commit 365130fd47af ("device property: Introduce device_for_each_child_node_scoped()") to remove the need for manual calling of fwnode_handle_put() in the paths where the code exits the loop early. Signed-off-by: Javier Carrasco <javier.carrasco.cruz@gmail.com> Link: https://lore.kernel.org/r/20240404-hwmon_device_for_each_child_node_scoped-v1-1-53997abde43c@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2024-04-04 13:13:27 +02:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: (ltc2991) remove device reference from state Remove device reference from struct ltc2991_state since it is used only inside the init function. Pass the struct device as parameter to the init function instead. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231031095647.48376-1-antoniu.miclaus@analog.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-31 11:56:46 +02:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: (ltc2991) remove device reference from state Remove device reference from struct ltc2991_state since it is used only inside the init function. Pass the struct device as parameter to the init function instead. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231031095647.48376-1-antoniu.miclaus@analog.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-31 11:56:46 +02:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: (ltc2991) remove device reference from state Remove device reference from struct ltc2991_state since it is used only inside the init function. Pass the struct device as parameter to the init function instead. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231031095647.48376-1-antoniu.miclaus@analog.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-31 11:56:46 +02:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: (ltc2991) remove device reference from state Remove device reference from struct ltc2991_state since it is used only inside the init function. Pass the struct device as parameter to the init function instead. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231031095647.48376-1-antoniu.miclaus@analog.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-31 11:56:46 +02:00
hwmon: ltc2991: Fix spelling mistake "contiuous" -> "continuous" There is a spelling mistake in a dev_err_probe messages. Fix it. Signed-off-by: Colin Ian King <colin.i.king@gmail.com> Link: https://lore.kernel.org/r/20231031084240.2148339-1-colin.i.king@gmail.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-31 08:42:40 +00:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: (ltc2991) remove device reference from state Remove device reference from struct ltc2991_state since it is used only inside the init function. Pass the struct device as parameter to the init function instead. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231031095647.48376-1-antoniu.miclaus@analog.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-31 11:56:46 +02:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00
hwmon: Use named initializers for arrays of i2c_device_data While being less compact, using named initializers allows to more easily see which members of the structs are assigned which value without having to lookup the declaration of the struct. And it's also more robust against changes to the struct definition. The mentioned robustness is relevant for a planned change to struct i2c_device_id that replaces .driver_data by an anonymous union. While touching all these arrays, unify indention and usage of commas. This patch doesn't modify the compiled arrays, only their representation in source form benefits. The former was confirmed with x86 and arm64 builds. Signed-off-by: Uwe Kleine-König (The Capable Hub) <u.kleine-koenig@baylibre.com> Link: https://lore.kernel.org/r/65b77bcd452752c36d866069cc5790b26d2bf8dc.1778688803.git.u.kleine-koenig@baylibre.com Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2026-05-13 18:44:58 +02:00
hwmon: Add driver for ltc2991 Add support for LTC2991 Octal I2C Voltage, Current, and Temperature Monitor. The LTC2991 is used to monitor system temperatures, voltages and currents. Through the I2C serial interface, the eight monitors can individually measure supply voltages and can be paired for differential measurements of current sense resistors or temperature sensing transistors. Additional measurements include internal temperature and internal VCC. Signed-off-by: Antoniu Miclaus <antoniu.miclaus@analog.com> Link: https://lore.kernel.org/r/20231026103413.27800-2-antoniu.miclaus@analog.com [groeck: Fixed up documentation warning] Signed-off-by: Guenter Roeck <linux@roeck-us.net>
2023-10-26 13:33:13 +03:00