linux-kernel - Re: [PATCH v2 6/7] platform: x86: Add intel_skl

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Date:   Mon, 18 Jan 2021 11:12:34 +0000
From:   Barnabás Pőcze <pobrn@...tonmail.com>
To:     Daniel Scally <djrscally@...il.com>
Cc:     "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
        "linux-gpio@...r.kernel.org" <linux-gpio@...r.kernel.org>,
        "linux-i2c@...r.kernel.org" <linux-i2c@...r.kernel.org>,
        "platform-driver-x86@...r.kernel.org" 
        <platform-driver-x86@...r.kernel.org>,
        "devel@...ica.org" <devel@...ica.org>,
        "rjw@...ysocki.net" <rjw@...ysocki.net>,
        "lenb@...nel.org" <lenb@...nel.org>,
        "andy@...nel.org" <andy@...nel.org>,
        "mika.westerberg@...ux.intel.com" <mika.westerberg@...ux.intel.com>,
        "linus.walleij@...aro.org" <linus.walleij@...aro.org>,
        "bgolaszewski@...libre.com" <bgolaszewski@...libre.com>,
        "wsa@...nel.org" <wsa@...nel.org>,
        "lee.jones@...aro.org" <lee.jones@...aro.org>,
        "hdegoede@...hat.com" <hdegoede@...hat.com>,
        "mgross@...ux.intel.com" <mgross@...ux.intel.com>,
        "robert.moore@...el.com" <robert.moore@...el.com>,
        "erik.kaneda@...el.com" <erik.kaneda@...el.com>,
        "sakari.ailus@...ux.intel.com" <sakari.ailus@...ux.intel.com>,
        "andriy.shevchenko@...ux.intel.com" 
        <andriy.shevchenko@...ux.intel.com>,
        "laurent.pinchart@...asonboard.com" 
        <laurent.pinchart@...asonboard.com>,
        "kieran.bingham@...asonboard.com" <kieran.bingham@...asonboard.com>
Subject: Re: [PATCH v2 6/7] platform: x86: Add intel_skl_int3472 driver

Hi


2021. január 18., hétfő 1:34 keltezéssel, Daniel Scally írta:

> ACPI devices with _HID INT3472 are currently matched to the tps68470
> driver, however this does not cover all situations in which that _HID
> occurs. We've encountered three possibilities:
>
> 1. On Chrome OS devices, an ACPI device with _HID INT3472 (representing
> a physical tps68470 device) that requires a GPIO and OpRegion driver
> 2. On devices designed for Windows, an ACPI device with _HID INT3472
> (again representing a physical tps68470 device) which requires GPIO,
> Clock and Regulator drivers.
> 3. On other devices designed for Windows, an ACPI device with _HID
> INT3472 which does NOT represent a physical tps68470, and is instead
> used as a dummy device to group some system GPIO lines which are meant
> to be consumed by the sensor that is dependent on this entry.
>
> This commit adds a new module, registering a platform driver to deal
> with the 3rd scenario plus an i2c-driver to deal with #1 and #2, by
> querying the CLDB buffer found against INT3472 entries to determine
> which is most appropriate.
>
> Suggested-by: Laurent Pinchart <laurent.pinchart@...asonboard.com>
> Signed-off-by: Daniel Scally <djrscally@...il.com>
> ---
> Changes in v2:
>
> 	- Switched to a module registering a platform driver to run
> 	the dummy ACPI devices, plus an i2c driver to replace and extend
> 	the existing tps68470 driver
> 	- Added clock handling functions to the int3472-discrete driver
> 	- A whole bunch of other changes too numerous to enumerate
>  MAINTAINERS                                   |   5 +
>  drivers/platform/x86/Kconfig                  |  25 +
>  drivers/platform/x86/Makefile                 |   4 +
>  .../platform/x86/intel_skl_int3472_common.c   | 100 ++++
>  .../platform/x86/intel_skl_int3472_common.h   | 100 ++++
>  .../platform/x86/intel_skl_int3472_discrete.c | 496 ++++++++++++++++++
>  .../platform/x86/intel_skl_int3472_tps68470.c | 145 +++++
>  7 files changed, 875 insertions(+)
>  create mode 100644 drivers/platform/x86/intel_skl_int3472_common.c
>  create mode 100644 drivers/platform/x86/intel_skl_int3472_common.h
>  create mode 100644 drivers/platform/x86/intel_skl_int3472_discrete.c
>  create mode 100644 drivers/platform/x86/intel_skl_int3472_tps68470.c

Have you considered putting the source (and header) files into a dedicated
folder? I think it'd help manageability in the long run, and it'd be immediately
obvious that these source files form a single "unit".


Regards,
Barnabás Pőcze