diff options
| author | Dimitri Fedrau <dimitri.fedrau@liebherr.com> | 2025-07-23 19:34:56 +0200 |
|---|---|---|
| committer | Uwe Kleine-König <ukleinek@kernel.org> | 2025-07-24 09:20:39 +0200 |
| commit | 28517c8b6275a9cd25a4974d0e4d58eaba465a67 (patch) | |
| tree | 1866503b913403a2da8d2a8629f4c4b93b4d538d /drivers/pwm | |
| parent | a582469541a3f39bed452c50c5d2744620b6db02 (diff) | |
pwm: mc33xs2410: add hwmon support
Support for hwmon is provided by a separate driver residing in hwmon
subsystem which is implemented as auxiliary device. Add handling of this
device.
Signed-off-by: Dimitri Fedrau <dimitri.fedrau@liebherr.com>
Link: https://lore.kernel.org/r/20250723-mc33xs2410-hwmon-v5-1-f62aab71cd59@liebherr.com
Signed-off-by: Uwe Kleine-König <ukleinek@kernel.org>
Diffstat (limited to 'drivers/pwm')
| -rw-r--r-- | drivers/pwm/Kconfig | 1 | ||||
| -rw-r--r-- | drivers/pwm/pwm-mc33xs2410.c | 20 |
2 files changed, 19 insertions, 2 deletions
diff --git a/drivers/pwm/Kconfig b/drivers/pwm/Kconfig index 3ef1757502eb..64f1c86340fd 100644 --- a/drivers/pwm/Kconfig +++ b/drivers/pwm/Kconfig @@ -436,6 +436,7 @@ config PWM_MC33XS2410 tristate "MC33XS2410 PWM support" depends on OF depends on SPI + select AUXILIARY_BUS help NXP MC33XS2410 high-side switch driver. The MC33XS2410 is a four channel high-side switch. The device is operational from 3.0 V diff --git a/drivers/pwm/pwm-mc33xs2410.c b/drivers/pwm/pwm-mc33xs2410.c index a1ac3445ccdb..6d99e3ff7239 100644 --- a/drivers/pwm/pwm-mc33xs2410.c +++ b/drivers/pwm/pwm-mc33xs2410.c @@ -17,11 +17,14 @@ * behavior of the output pin that is neither the old nor the new state, * rather something in between. */ +#define DEFAULT_SYMBOL_NAMESPACE "PWM_MC33XS2410" +#include <linux/auxiliary_bus.h> #include <linux/bitfield.h> #include <linux/delay.h> #include <linux/err.h> #include <linux/math64.h> +#include <linux/mc33xs2410.h> #include <linux/minmax.h> #include <linux/module.h> #include <linux/of.h> @@ -120,12 +123,19 @@ static int mc33xs2410_read_reg(struct spi_device *spi, u8 reg, u16 *val, u8 flag return mc33xs2410_read_regs(spi, ®, flag, val, 1); } -static int mc33xs2410_read_reg_ctrl(struct spi_device *spi, u8 reg, u16 *val) +int mc33xs2410_read_reg_ctrl(struct spi_device *spi, u8 reg, u16 *val) { return mc33xs2410_read_reg(spi, reg, val, MC33XS2410_FRAME_IN_DATA_RD); } +EXPORT_SYMBOL_GPL(mc33xs2410_read_reg_ctrl); -static int mc33xs2410_modify_reg(struct spi_device *spi, u8 reg, u8 mask, u8 val) +int mc33xs2410_read_reg_diag(struct spi_device *spi, u8 reg, u16 *val) +{ + return mc33xs2410_read_reg(spi, reg, val, 0); +} +EXPORT_SYMBOL_GPL(mc33xs2410_read_reg_diag); + +int mc33xs2410_modify_reg(struct spi_device *spi, u8 reg, u8 mask, u8 val) { u16 tmp; int ret; @@ -139,6 +149,7 @@ static int mc33xs2410_modify_reg(struct spi_device *spi, u8 reg, u8 mask, u8 val return mc33xs2410_write_reg(spi, reg, tmp); } +EXPORT_SYMBOL_GPL(mc33xs2410_modify_reg); static u8 mc33xs2410_pwm_get_freq(u64 period) { @@ -314,6 +325,7 @@ static int mc33xs2410_reset(struct device *dev) static int mc33xs2410_probe(struct spi_device *spi) { struct device *dev = &spi->dev; + struct auxiliary_device *adev; struct pwm_chip *chip; int ret; @@ -361,6 +373,10 @@ static int mc33xs2410_probe(struct spi_device *spi) if (ret < 0) return dev_err_probe(dev, ret, "Failed to add pwm chip\n"); + adev = devm_auxiliary_device_create(dev, "hwmon", NULL); + if (!adev) + return dev_err_probe(dev, -ENODEV, "Failed to register hwmon device\n"); + return 0; } |