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Message-ID: <20140703174017.GP16590@localhost>
Date: Thu, 3 Jul 2014 19:40:17 +0200
From: Johan Hovold <johan@...nel.org>
To: Janne Kanniainen <janne.kanniainen@...il.com>, cooloney@...il.com
Cc: johan@...nel.org, cooloney@...il.com, jkosina@...e.cz,
greg@...ah.com, bjorn@...k.no, linux-kernel@...r.kernel.org,
linux-leds@...r.kernel.org, linux-usb@...r.kernel.org,
linux-input@...r.kernel.org
Subject: Re: [PATCH 2/2 v6] HID: gt683r: move mode attribute to led-class
devices
On Thu, Jul 03, 2014 at 08:17:09PM +0300, Janne Kanniainen wrote:
> Move led_mode attribute from HID device to led-class devices and rename
> it msi_mode. This will also fix race condition by using
There's a typo here (s/msi_mode/mode) but perhaps Bryan can just fix
that up before applying?
> attribute-groups.
>
> Signed-off-by: Janne Kanniainen <janne.kanniainen@...il.com>
Reviewed-by: Johan Hovold <johan@...nel.org>
Otherwise both patches (v6) are ready to be merged, Bryan.
Thanks, Janne!
Johan
> ---
>
> Changes in v3:
> - Style fixes
> - Rename sysfs-class-hid-driver-gt683r to sysfs-class-leds-driver-gt683r
>
> Changes in v4:
> - Rename sysfs-class-leds-driver-gt683r to sysfs-class-leds-gt683r
> - Change "What: " to /sys/class/leds/<led>/gt683r/mode
> - Change .name from gt683r_led to gt683r
>
> Changes in v5:
> - Move mode attribute to gt683r/mode
>
> Changes in v6:
> - Fix subject and commit message
>
> .../ABI/testing/sysfs-class-hid-driver-gt683r | 14 ---------
> Documentation/ABI/testing/sysfs-class-leds-gt683r | 16 ++++++++++
> drivers/hid/hid-gt683r.c | 36 ++++++++++++++--------
> 3 files changed, 40 insertions(+), 26 deletions(-)
> delete mode 100644 Documentation/ABI/testing/sysfs-class-hid-driver-gt683r
> create mode 100644 Documentation/ABI/testing/sysfs-class-leds-gt683r
>
> diff --git a/Documentation/ABI/testing/sysfs-class-hid-driver-gt683r b/Documentation/ABI/testing/sysfs-class-hid-driver-gt683r
> deleted file mode 100644
> index 317e9d5..0000000
> --- a/Documentation/ABI/testing/sysfs-class-hid-driver-gt683r
> +++ /dev/null
> @@ -1,14 +0,0 @@
> -What: /sys/class/hidraw/<hidraw>/device/leds_mode
> -Date: Jun 2014
> -KernelVersion: 3.17
> -Contact: Janne Kanniainen <janne.kanniainen@...il.com>
> -Description:
> - Set the mode of LEDs
> -
> - 0 - normal
> - 1 - audio
> - 2 - breathing
> -
> - Normal: LEDs are fully on when enabled
> - Audio: LEDs brightness depends on sound level
> - Breathing: LEDs brightness varies at human breathing rate
> \ No newline at end of file
> diff --git a/Documentation/ABI/testing/sysfs-class-leds-gt683r b/Documentation/ABI/testing/sysfs-class-leds-gt683r
> new file mode 100644
> index 0000000..e4fae60
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-class-leds-gt683r
> @@ -0,0 +1,16 @@
> +What: /sys/class/leds/<led>/gt683r/mode
> +Date: Jun 2014
> +KernelVersion: 3.17
> +Contact: Janne Kanniainen <janne.kanniainen@...il.com>
> +Description:
> + Set the mode of LEDs. You should notice that changing the mode
> + of one LED will update the mode of its two sibling devices as
> + well.
> +
> + 0 - normal
> + 1 - audio
> + 2 - breathing
> +
> + Normal: LEDs are fully on when enabled
> + Audio: LEDs brightness depends on sound level
> + Breathing: LEDs brightness varies at human breathing rate
> \ No newline at end of file
> diff --git a/drivers/hid/hid-gt683r.c b/drivers/hid/hid-gt683r.c
> index 073bd80..0d6f135 100644
> --- a/drivers/hid/hid-gt683r.c
> +++ b/drivers/hid/hid-gt683r.c
> @@ -84,12 +84,13 @@ static void gt683r_brightness_set(struct led_classdev *led_cdev,
> }
> }
>
> -static ssize_t leds_mode_show(struct device *dev,
> +static ssize_t mode_show(struct device *dev,
> struct device_attribute *attr,
> char *buf)
> {
> u8 sysfs_mode;
> - struct hid_device *hdev = container_of(dev, struct hid_device, dev);
> + struct hid_device *hdev = container_of(dev->parent,
> + struct hid_device, dev);
> struct gt683r_led *led = hid_get_drvdata(hdev);
>
> if (led->mode == GT683R_LED_NORMAL)
> @@ -102,12 +103,13 @@ static ssize_t leds_mode_show(struct device *dev,
> return scnprintf(buf, PAGE_SIZE, "%u\n", sysfs_mode);
> }
>
> -static ssize_t leds_mode_store(struct device *dev,
> +static ssize_t mode_store(struct device *dev,
> struct device_attribute *attr,
> const char *buf, size_t count)
> {
> u8 sysfs_mode;
> - struct hid_device *hdev = container_of(dev, struct hid_device, dev);
> + struct hid_device *hdev = container_of(dev->parent,
> + struct hid_device, dev);
> struct gt683r_led *led = hid_get_drvdata(hdev);
>
>
> @@ -212,7 +214,22 @@ fail:
> mutex_unlock(&led->lock);
> }
>
> -static DEVICE_ATTR_RW(leds_mode);
> +static DEVICE_ATTR_RW(mode);
> +
> +static struct attribute *gt683r_led_attrs[] = {
> + &dev_attr_mode.attr,
> + NULL
> +};
> +
> +static const struct attribute_group gt683r_led_group = {
> + .name = "gt683r",
> + .attrs = gt683r_led_attrs,
> +};
> +
> +static const struct attribute_group *gt683r_led_groups[] = {
> + >683r_led_group,
> + NULL
> +};
>
> static int gt683r_led_probe(struct hid_device *hdev,
> const struct hid_device_id *id)
> @@ -261,6 +278,8 @@ static int gt683r_led_probe(struct hid_device *hdev,
> led->led_devs[i].name = name;
> led->led_devs[i].max_brightness = 1;
> led->led_devs[i].brightness_set = gt683r_brightness_set;
> + led->led_devs[i].groups = gt683r_led_groups;
> +
> ret = led_classdev_register(&hdev->dev, &led->led_devs[i]);
> if (ret) {
> hid_err(hdev, "could not register led device\n");
> @@ -268,12 +287,6 @@ static int gt683r_led_probe(struct hid_device *hdev,
> }
> }
>
> - ret = device_create_file(&led->hdev->dev, &dev_attr_leds_mode);
> - if (ret) {
> - hid_err(hdev, "could not make mode attribute file\n");
> - goto fail;
> - }
> -
> return 0;
>
> fail:
> @@ -288,7 +301,6 @@ static void gt683r_led_remove(struct hid_device *hdev)
> int i;
> struct gt683r_led *led = hid_get_drvdata(hdev);
>
> - device_remove_file(&hdev->dev, &dev_attr_leds_mode);
> for (i = 0; i < GT683R_LED_COUNT; i++)
> led_classdev_unregister(&led->led_devs[i]);
> flush_work(&led->work);
--
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