diff options
| author | Uwe Kleine-König <u.kleine-koenig@pengutronix.de> | 2023-11-14 12:20:12 +0100 |
|---|---|---|
| committer | Thierry Reding <thierry.reding@gmail.com> | 2023-12-20 16:04:12 +0100 |
| commit | 54c86dd20bba23109e32e4e2f94ff93dd9863bc3 (patch) | |
| tree | b754aa9654ec304f2a96a04f2e8e3f6fb8da2019 /include/linux/pwm.h | |
| parent | f3e25e68ceb2abaeefcac8f930c940c4494705d0 (diff) | |
pwm: Replace PWM chip unique base by unique ID
Traditionally each PWM device had a unique ID stored in the "pwm" member
of struct pwm_device. However this number was hardly used and dropped
in the previous commit. To identify a certain PWM you're supposed to use
the chip's ID and the hwpwm of the PWM device now.
With the PWM chip base gone PWM chips can get their IDs better and
simpler using an idr.
This is expected to change the numbering of PWM chips, but nothing
should rely on the numbering anyhow.
Other than that the side effects are:
- The PWM chip IDs are smaller and in most cases consecutive.
- The ordering in /sys/kernel/debug/pwm is ordered by ascending PWM
chip ID.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Thierry Reding <thierry.reding@gmail.com>
Diffstat (limited to 'include/linux/pwm.h')
| -rw-r--r-- | include/linux/pwm.h | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/include/linux/pwm.h b/include/linux/pwm.h index 8cadf9ee8d26..c27a4bb76012 100644 --- a/include/linux/pwm.h +++ b/include/linux/pwm.h @@ -292,7 +292,7 @@ struct pwm_chip { struct device *dev; const struct pwm_ops *ops; struct module *owner; - int base; + unsigned int id; unsigned int npwm; struct pwm_device * (*of_xlate)(struct pwm_chip *chip, @@ -300,7 +300,6 @@ struct pwm_chip { unsigned int of_pwm_n_cells; /* only used internally by the PWM framework */ - struct list_head list; struct pwm_device *pwms; }; |