From: Marek Vasut <marex@denx.de>
To: Josef Gajdusek <atx@atx.name>, linux-iio@vger.kernel.org
Cc: jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de,
pmeerw@pmeerw.net, maitysanchayan@gmail.com,
gregor.boirie@parrot.com, linux-kernel@vger.kernel.org,
rui.zhang@intel.com, marxin.liska@gmail.com
Subject: Re: [PATCH v2] iio: light: acpi-als: Properly enable on ASUS Zenbooks
Date: Thu, 19 Jan 2017 15:48:12 +0100 [thread overview]
Message-ID: <7b7f6d47-a0cc-8af5-c68f-da4350d793aa@denx.de> (raw)
In-Reply-To: <20170119114816.GA12918@rick.lan>
On 01/19/2017 12:48 PM, Josef Gajdusek wrote:
> ASUS Zenbooks need several special ACPI calls to enable the ALS peripheral.
> Otherwise, reads just return 0.
>
> Signed-off-by: Josef Gajdusek <atx@atx.name>
> ---
> drivers/iio/light/acpi-als.c | 17 +++++++++++++++++
> 1 file changed, 17 insertions(+)
>
> diff --git a/drivers/iio/light/acpi-als.c b/drivers/iio/light/acpi-als.c
> index f0b47c5..ccd5787 100644
> --- a/drivers/iio/light/acpi-als.c
> +++ b/drivers/iio/light/acpi-als.c
> @@ -39,6 +39,9 @@
> #define ACPI_ALS_DEVICE_NAME "acpi-als"
> #define ACPI_ALS_NOTIFY_ILLUMINANCE 0x80
>
> +#define ACPI_ALS_ASUS_TALS "\\_SB.PCI0.LPCB.EC0.TALS"
> +#define ACPI_ALS_ASUS_ALSC "\\_SB.ATKD.ALSC"
> +
> ACPI_MODULE_NAME("acpi-als");
>
> /*
> @@ -170,6 +173,16 @@ static int acpi_als_read_raw(struct iio_dev *indio_dev,
> return IIO_VAL_INT;
> }
>
> +static void acpi_als_quirk_asus(struct acpi_als *als)
> +{
> + acpi_execute_simple_method(NULL, ACPI_ALS_ASUS_TALS, 1);
> + acpi_execute_simple_method(NULL, ACPI_ALS_ASUS_ALSC, 1);
This will run on ALL systems, right ? Also, error checking disappeared ?
> +}
> +
> +static void (*acpi_als_quirks[])(struct acpi_als *als) = {
> + acpi_als_quirk_asus,
> +};
> +
> static const struct iio_info acpi_als_info = {
> .driver_module = THIS_MODULE,
> .read_raw = acpi_als_read_raw,
> @@ -180,6 +193,7 @@ static int acpi_als_add(struct acpi_device *device)
> struct acpi_als *als;
> struct iio_dev *indio_dev;
> struct iio_buffer *buffer;
> + int i;
>
> indio_dev = devm_iio_device_alloc(&device->dev, sizeof(*als));
> if (!indio_dev)
> @@ -191,6 +205,9 @@ static int acpi_als_add(struct acpi_device *device)
> als->device = device;
> mutex_init(&als->lock);
>
> + for (i = 0; i < ARRAY_SIZE(acpi_als_quirks); i++)
> + acpi_als_quirks[i](als);
> +
> indio_dev->name = ACPI_ALS_DEVICE_NAME;
> indio_dev->dev.parent = &device->dev;
> indio_dev->info = &acpi_als_info;
>
--
Best regards,
Marek Vasut
next prev parent reply other threads:[~2017-01-19 15:49 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-19 11:48 [PATCH v2] iio: light: acpi-als: Properly enable on ASUS Zenbooks Josef Gajdusek
2017-01-19 14:48 ` Marek Vasut [this message]
2017-01-19 16:19 ` atx
2017-01-19 16:27 ` Marek Vasut
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=7b7f6d47-a0cc-8af5-c68f-da4350d793aa@denx.de \
--to=marex@denx.de \
--cc=atx@atx.name \
--cc=gregor.boirie@parrot.com \
--cc=jic23@kernel.org \
--cc=knaack.h@gmx.de \
--cc=lars@metafoo.de \
--cc=linux-iio@vger.kernel.org \
--cc=linux-kernel@vger.kernel.org \
--cc=maitysanchayan@gmail.com \
--cc=marxin.liska@gmail.com \
--cc=pmeerw@pmeerw.net \
--cc=rui.zhang@intel.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).