On 2016-12-12 12:00, Peter Rosin wrote:
> If several parallel bq24735 chargers have their ac-detect gpios wired
> together (or if only one of the parallel bq24735 chargers have its
> ac-detect pin wired to a gpio, and the others are assumed to react the
> same), then all driver instances need to check the same gpio. But the
> gpio subsystem does not allow sharing gpios, so handle that locally.
>
> However, only do this for the polling case, sharing is not supported if
> the ac detection is handled with interrupts.
>
> Signed-off-by: Peter Rosin <p...@axentia.se>
> ---
> drivers/power/supply/bq24735-charger.c | 101
> +++++++++++++++++++++++++++++----
> 1 file changed, 90 insertions(+), 11 deletions(-)
>
> diff --git a/drivers/power/supply/bq24735-charger.c
> b/drivers/power/supply/bq24735-charger.c
> index 3765806d5d46..3b21a064a9a7 100644
> --- a/drivers/power/supply/bq24735-charger.c
> +++ b/drivers/power/supply/bq24735-charger.c
> @@ -25,6 +25,7 @@
> #include <linux/kernel.h>
> #include <linux/module.h>
> #include <linux/of.h>
> +#include <linux/of_gpio.h>
> #include <linux/gpio/consumer.h>
> #include <linux/power_supply.h>
> #include <linux/slab.h>
> @@ -43,12 +44,24 @@
> #define BQ24735_MANUFACTURER_ID 0xfe
> #define BQ24735_DEVICE_ID 0xff
>
> +struct bq24735;
> +
> +struct bq24735_shared {
> + struct list_head list;
> + struct bq24735 *owner;
> + struct gpio_desc *status_gpio;
> +};
> +
> +static struct mutex shared_lock;
Aww crap, that should of course be
static DEFINE_MUTEX(shared_lock);
Will fix in v2, but I'll wait for other feedback first. Why is it
impossible to see these things before hitting send?
Cheers,
peda
