On Tue, May 3, 2016 at 9:00 AM, Baolin Wang <baolin.wang@xxxxxxxxxx> wrote:
> Integrate with the newly added USB charger interface to limit the current
> we draw from the USB input based on the input device configuration
> identified by the USB stack, allowing us to charge more quickly from high
> current inputs without drawing more current than specified from others.
>
> Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
> Signed-off-by: Baolin Wang <baolin.wang@xxxxxxxxxx>
> Acked-by: Lee Jones <lee.jones@xxxxxxxxxx>
> Acked-by: Charles Keepax <ckeepax@xxxxxxxxxxxxxxxxxxxxxxxxxxx>
> Acked-by: Peter Chen <peter.chen@xxxxxxxxxxxxx>
> Acked-by: Sebastian Reichel <sre@xxxxxxxxxx>
> ---
> drivers/power/wm831x_power.c | 69 ++++++++++++++++++++++++++++++++++++++
> include/linux/mfd/wm831x/pdata.h | 3 ++
> 2 files changed, 72 insertions(+)
>
> diff --git a/drivers/power/wm831x_power.c b/drivers/power/wm831x_power.c
> index 7082301..cef1812 100644
> --- a/drivers/power/wm831x_power.c
> +++ b/drivers/power/wm831x_power.c
> @@ -13,6 +13,7 @@
> #include <linux/platform_device.h>
> #include <linux/power_supply.h>
> #include <linux/slab.h>
> +#include <linux/usb/charger.h>
>
> #include <linux/mfd/wm831x/core.h>
> #include <linux/mfd/wm831x/auxadc.h>
> @@ -31,6 +32,8 @@ struct wm831x_power {
> char usb_name[20];
> char battery_name[20];
> bool have_battery;
> + struct usb_charger *usb_charger;
> + struct notifier_block usb_notify;
> };
>
> static int wm831x_power_check_online(struct wm831x *wm831x, int supply,
> @@ -125,6 +128,43 @@ static enum power_supply_property wm831x_usb_props[] = {
> POWER_SUPPLY_PROP_VOLTAGE_NOW,
> };
>
> +/* In milliamps */
> +static const unsigned int wm831x_usb_limits[] = {
> + 0,
> + 2,
> + 100,
> + 500,
> + 900,
> + 1500,
> + 1800,
> + 550,
> +};
Just for curiosity, How these current limits are getting decided?
Can we have some proper defines over here so that it can be grasped easily?
Thanks
Manish Badarkhe
--
To unsubscribe from this list: send the line "unsubscribe linux-usb" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
