linux-kernel - Re: [PATCH v2 2/3] power: supply: add cros-ec USBPD charger driver.

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Message-ID: <CAFqH_505=0trAq_td-qiN5Ya9Y3p720YhRgzgc6pQoz5BJLBGg@mail.gmail.com>
Date:   Mon, 30 Apr 2018 15:37:23 +0200
From:   Enric Balletbo Serra <eballetbo@...il.com>
To:     Miguel Ojeda <miguel.ojeda.sandonis@...il.com>
Cc:     Enric Balletbo i Serra <enric.balletbo@...labora.com>,
        Lee Jones <lee.jones@...aro.org>,
        Sebastian Reichel <sre@...nel.org>,
        Gwendal Grignou <gwendal@...omium.org>,
        Sameer Nanda <snanda@...omium.org>,
        Linux PM list <linux-pm@...r.kernel.org>,
        Guenter Roeck <groeck@...omium.org>,
        linux-kernel <linux-kernel@...r.kernel.org>,
        Benson Leung <bleung@...omium.org>
Subject: Re: [PATCH v2 2/3] power: supply: add cros-ec USBPD charger driver.

Hi Miguel,

2018-04-30 15:20 GMT+02:00 Miguel Ojeda <miguel.ojeda.sandonis@...il.com>:
> On Mon, Apr 30, 2018 at 3:14 PM, Enric Balletbo i Serra
> <enric.balletbo@...labora.com> wrote:
>> From: Sameer Nanda <snanda@...omium.org>
>>
>> This driver gets various bits of information about what is connected to
>> USB PD ports from the EC and converts that into power_supply properties.
>>
>> Signed-off-by: Sameer Nanda <snanda@...omium.org>
>> Signed-off-by: Enric Balletbo i Serra <enric.balletbo@...labora.com>
>> ---
>>
>> Changes in v2:
>> - [2/3] Add SPDX header, use devm_ variant and drop .owner
>> - [2/3] Removed the PD log functionality (will be send on a follow up patch)
>> - [2/3] Removed the extra custom sysfs attributes (will be send on a follow up patch)
>>
>>  drivers/power/supply/Kconfig              |  10 +
>>  drivers/power/supply/Makefile             |   1 +
>>  drivers/power/supply/cros_usbpd-charger.c | 511 ++++++++++++++++++++++
>>  include/linux/mfd/cros_ec.h               |   2 +
>>  4 files changed, 524 insertions(+)
>>  create mode 100644 drivers/power/supply/cros_usbpd-charger.c
>>
>> diff --git a/drivers/power/supply/Kconfig b/drivers/power/supply/Kconfig
>> index 428b426842f4..046eb23ba6f0 100644
>> --- a/drivers/power/supply/Kconfig
>> +++ b/drivers/power/supply/Kconfig
>> @@ -624,4 +624,14 @@ config CHARGER_RT9455
>>         help
>>           Say Y to enable support for Richtek RT9455 battery charger.
>>
>> +config CHARGER_CROS_USBPD
>> +       tristate "ChromeOS EC based USBPD charger"
>> +       depends on MFD_CROS_EC
>> +       default n
>> +       help
>> +         Say Y here to enable ChromeOS EC based USBPD charger
>> +         driver. This driver gets various bits of information about
>> +         what is connected to USB PD ports from the EC and converts
>> +         that into power_supply properties.
>> +
>>  endif # POWER_SUPPLY
>> diff --git a/drivers/power/supply/Makefile b/drivers/power/supply/Makefile
>> index e83aa843bcc6..907e26f824b2 100644
>> --- a/drivers/power/supply/Makefile
>> +++ b/drivers/power/supply/Makefile
>> @@ -83,3 +83,4 @@ obj-$(CONFIG_CHARGER_TPS65090)        += tps65090-charger.o
>>  obj-$(CONFIG_CHARGER_TPS65217) += tps65217_charger.o
>>  obj-$(CONFIG_AXP288_FUEL_GAUGE) += axp288_fuel_gauge.o
>>  obj-$(CONFIG_AXP288_CHARGER)   += axp288_charger.o
>> +obj-$(CONFIG_CHARGER_CROS_USBPD)       += cros_usbpd-charger.o
>> diff --git a/drivers/power/supply/cros_usbpd-charger.c b/drivers/power/supply/cros_usbpd-charger.c
>> new file mode 100644
>> index 000000000000..c57d1c41828c
>> --- /dev/null
>> +++ b/drivers/power/supply/cros_usbpd-charger.c
>> @@ -0,0 +1,511 @@
>> +// SPDX-License-Identifier: GPL-2.0
>
> If this is GPL-2.0...
>

Good catch, I think that this should be

SPDX-License-Identifier: GPL-2.0+

I will change in next version when I get more review.

>> +/*
>> + * Power supply driver for ChromeOS EC based USB PD Charger.
>> + *
>> + * Copyright (c) 2014 - 2018 Google, Inc
>> + */
>> +
>> +
>> +module_platform_driver(cros_usbpd_charger_driver);
>> +
>> +MODULE_LICENSE("GPL");
>
> ...then this should be "GPL v2":
> https://elixir.bootlin.com/linux/v4.17-rc3/source/include/linux/module.h#L175
>
> Cheers,
> Miguel

Thanks,
Enric