linux-kernel - RE: [PATCH 0/2] Adjust logic for power_supply_is_system

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Message-ID: <DM6PR12MB2619C223B0450A23A39BB093E47E9@DM6PR12MB2619.namprd12.prod.outlook.com>
Date:   Wed, 17 May 2023 01:22:25 +0000
From:   "Quan, Evan" <Evan.Quan@....com>
To:     "Limonciello, Mario" <Mario.Limonciello@....com>,
        "heikki.krogerus@...ux.intel.com" <heikki.krogerus@...ux.intel.com>,
        "rafael@...nel.org" <rafael@...nel.org>,
        "ajayg@...dia.com" <ajayg@...dia.com>,
        "andriy.shevchenko@...ux.intel.com" 
        <andriy.shevchenko@...ux.intel.com>
CC:     "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        "linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-usb@...r.kernel.org" <linux-usb@...r.kernel.org>,
        "Lazar, Lijo" <Lijo.Lazar@....com>,
        "Goswami, Sanket" <Sanket.Goswami@....com>
Subject: RE: [PATCH 0/2] Adjust logic for power_supply_is_system_supplied()

[AMD Official Use Only - General]

Series is Reviewed-and-tested-by: Evan Quan <evan.quan@....com>

> -----Original Message-----
> From: Limonciello, Mario <Mario.Limonciello@....com>
> Sent: Wednesday, May 17, 2023 2:26 AM
> To: heikki.krogerus@...ux.intel.com; rafael@...nel.org; ajayg@...dia.com;
> andriy.shevchenko@...ux.intel.com
> Cc: linux-i2c@...r.kernel.org; linux-pm@...r.kernel.org; linux-
> kernel@...r.kernel.org; linux-usb@...r.kernel.org; Quan, Evan
> <Evan.Quan@....com>; Lazar, Lijo <Lijo.Lazar@....com>; Goswami, Sanket
> <Sanket.Goswami@....com>; Limonciello, Mario
> <Mario.Limonciello@....com>
> Subject: [PATCH 0/2] Adjust logic for power_supply_is_system_supplied()
>
> Some systems don't provide any ACPI power supplies, but drivers use the
> function power_supply_is_system_supplied() to make policy decisions.
>
> This logic works fine until a new device is added to the system that provides a
> UCSI power supply. This power supply doesn't power the system but the logic
> assumes it does.
>
> This series adjusts the logic so that these power supplies are not considered
> when making these policy decisions.
>
> Mario Limonciello (2):
>   power: supply: Use the scope of power supplies to tell if power is
>     system supplied
>   usb: typec: ucsi: Don't create power supplies for dGPUs
>
>  drivers/i2c/busses/i2c-designware-pcidrv.c | 13 ++++++++++++-
>  drivers/i2c/busses/i2c-nvidia-gpu.c        |  3 +++
>  drivers/power/supply/power_supply_core.c   |  8 ++++++--
>  drivers/usb/typec/ucsi/psy.c               | 14 ++++++++++++++
>  4 files changed, 35 insertions(+), 3 deletions(-)
>
> --
> 2.34.1