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SubjectRe: [PATCH v3 2/6] asus-wmi: Implement TUF laptop keyboard LED modes
*sighs*

I swear I ran checkpatch. I just doublechecked and ran again, getting
this:

----------------------------------------------------------------
./v3-0002-asus-wmi-Implement-TUF-laptop-keyboard-LED-modes.patch
----------------------------------------------------------------
WARNING: Prefer kstrto<type> to single variable sscanf
#108: FILE: drivers/platform/x86/asus-wmi.c:783:
+ if (sscanf(buf, "%hhd", &save) != 1)
+ return -EINVAL;

WARNING: Prefer kstrto<type> to single variable sscanf
#129: FILE: drivers/platform/x86/asus-wmi.c:804:
+ if (sscanf(buf, "%hhd", &mode) != 1)
+ return -EINVAL;

WARNING: suspect code indent for conditional statements (8, 10)
#133: FILE: drivers/platform/x86/asus-wmi.c:808:
+ if (mode >= 12 || mode == 10)
+ asus->keyboard_rgb_led.mode = 10;

WARNING: suspect code indent for conditional statements (8, 10)
#135: FILE: drivers/platform/x86/asus-wmi.c:810:
+ else
+ asus->keyboard_rgb_led.mode = mode;

WARNING: Prefer kstrto<type> to single variable sscanf
#151: FILE: drivers/platform/x86/asus-wmi.c:826:
+ if (sscanf(buf, "%hhd", &speed) != 1)
+ return -EINVAL;

I will fix, and wait for review of V3 before submitting hopefully the
final version.

Sorry everyone.


On Tue, Aug 9 2022 at 14:50:50 +1200, Luke D. Jones <luke@ljones.dev>
wrote:
> Adds support for changing the laptop keyboard LED modes. These
> are visible effects such as static, rainbow, pulsing, colour cycles.
>
> These sysfs attributes are added to asus-nb-wmi:
> - keyboard_rgb_save
> - keyboard_rgb_mode
> - keyboard_rgb_speed
>
> Signed-off-by: Luke D. Jones <luke@ljones.dev>
> ---
> .../ABI/testing/sysfs-platform-asus-wmi | 30 +++++
> drivers/platform/x86/asus-wmi.c | 127
> ++++++++++++++++--
> 2 files changed, 149 insertions(+), 8 deletions(-)
>
> diff --git a/Documentation/ABI/testing/sysfs-platform-asus-wmi
> b/Documentation/ABI/testing/sysfs-platform-asus-wmi
> index 04885738cf15..a9128fa5cc65 100644
> --- a/Documentation/ABI/testing/sysfs-platform-asus-wmi
> +++ b/Documentation/ABI/testing/sysfs-platform-asus-wmi
> @@ -57,3 +57,33 @@ Description:
> * 0 - default,
> * 1 - overboost,
> * 2 - silent
> +
> +What: /sys/devices/platform/<platform>/keyboard_rgb_save
> +Date: Aug 2022
> +KernelVersion: 6.1
> +Contact: "Luke Jones" <luke@ljones.dev>
> +Description:
> + Set or save the RGB mode details (write-only):
> + * 0 - set, the settings will be lost on boot
> + * 1 - save, the settings will be retained on boot
> +
> +What: /sys/devices/platform/<platform>/keyboard_rgb_mode
> +Date: Aug 2022
> +KernelVersion: 6.1
> +Contact: "Luke Jones" <luke@ljones.dev>
> +Description:
> + Set the mode of the RGB keyboard, the mode will not apply until the
> + keyboard_rgb_save attribute is set (write-only):
> + * 0 to 12, each is an RGB such as static, rainbow, pulse.
> + Not all keyboards accept every mode.
> +
> +What: /sys/devices/platform/<platform>/keyboard_rgb_speed
> +Date: Aug 2022
> +KernelVersion: 6.1
> +Contact: "Luke Jones" <luke@ljones.dev>
> +Description:
> + Set the speed of the selected RGB effect, the speed will not apply
> + until the keyboard_rgb_save attribute is set (write-only):
> + * 0 - slow
> + * 1 - medium
> + * 2 - fast
> \ No newline at end of file
> diff --git a/drivers/platform/x86/asus-wmi.c
> b/drivers/platform/x86/asus-wmi.c
> index 233e73f4313d..fa0cc2895a66 100644
> --- a/drivers/platform/x86/asus-wmi.c
> +++ b/drivers/platform/x86/asus-wmi.c
> @@ -246,7 +246,8 @@ struct asus_wmi {
> bool dgpu_disable_available;
> bool dgpu_disable;
>
> - struct keyboard_rgb_led keyboard_rgb_mode;
> + bool keyboard_rgb_mode_available;
> + struct keyboard_rgb_led keyboard_rgb_led;
>
> bool throttle_thermal_policy_available;
> u8 throttle_thermal_policy_mode;
> @@ -748,6 +749,102 @@ static ssize_t egpu_enable_store(struct device
> *dev,
>
> static DEVICE_ATTR_RW(egpu_enable);
>
> +/* TUF Laptop Keyboard RGB Modes
> **********************************************/
> +static int keyboard_rgb_check_present(struct asus_wmi *asus)
> +{
> + u32 result;
> + int err;
> +
> + asus->keyboard_rgb_mode_available = false;
> +
> + err = asus_wmi_get_devstate(asus, ASUS_WMI_DEVID_TUF_RGB_MODE,
> &result);
> + if (err) {
> + if (err == -ENODEV)
> + return 0;
> + return err;
> + }
> +
> + if (result & ASUS_WMI_DSTS_PRESENCE_BIT)
> + asus->keyboard_rgb_mode_available = true;
> +
> + return 0;
> +}
> +
> +static ssize_t keyboard_rgb_save_store(struct device *device,
> + struct device_attribute *attr,
> + const char *buf, size_t count)
> +{
> + u8 save;
> + int err;
> +
> + struct asus_wmi *asus = dev_get_drvdata(device);
> + struct led_classdev *cdev = &asus->keyboard_rgb_led.dev.led_cdev;
> +
> + if (sscanf(buf, "%hhd", &save) != 1)
> + return -EINVAL;
> +
> + asus->keyboard_rgb_led.save = !!save;
> +
> + err = tuf_rgb_brightness_set(cdev, cdev->brightness);
> + if (err)
> + return err;
> +
> + return count;
> +}
> +static DEVICE_ATTR_WO(keyboard_rgb_save);
> +
> +static ssize_t keyboard_rgb_mode_store(struct device *device,
> + struct device_attribute *attr,
> + const char *buf, size_t count)
> +{
> + u8 mode;
> +
> + struct asus_wmi *asus = dev_get_drvdata(device);
> +
> + if (sscanf(buf, "%hhd", &mode) != 1)
> + return -EINVAL;
> +
> + /* These are the known usable modes across all TUF/ROG */
> + if (mode >= 12 || mode == 10)
> + asus->keyboard_rgb_led.mode = 10;
> + else
> + asus->keyboard_rgb_led.mode = mode;
> +
> + return count;
> +}
> +static DEVICE_ATTR_WO(keyboard_rgb_mode);
> +
> +
> +static ssize_t keyboard_rgb_speed_store(struct device *device,
> + struct device_attribute *attr,
> + const char *buf, size_t count)
> +{
> + u8 speed;
> +
> + struct asus_wmi *asus = dev_get_drvdata(device);
> +
> + if (sscanf(buf, "%hhd", &speed) != 1)
> + return -EINVAL;
> +
> + switch (speed) {
> + case 0:
> + asus->keyboard_rgb_led.speed = 0xe1;
> + break;
> + case 1:
> + asus->keyboard_rgb_led.speed = 0xeb;
> + break;
> + case 2:
> + asus->keyboard_rgb_led.speed = 0xf5;
> + break;
> + default:
> + asus->keyboard_rgb_led.speed = 0xeb;
> + break;
> + }
> +
> + return count;
> +}
> +static DEVICE_ATTR_WO(keyboard_rgb_speed);
> +
> /* Battery
> ********************************************************************/
>
> /* The battery maximum charging percentage */
> @@ -1047,7 +1144,7 @@ static int tuf_rgb_brightness_set(struct
> led_classdev *cdev,
> {
> struct led_classdev_mc *mc_cdev = lcdev_to_mccdev(cdev);
> struct keyboard_rgb_led *rgb = container_of(mc_cdev, struct
> keyboard_rgb_led, dev);
> - struct asus_wmi *asus = container_of(rgb, struct asus_wmi,
> keyboard_rgb_mode);
> + struct asus_wmi *asus = container_of(rgb, struct asus_wmi,
> keyboard_rgb_led);
> struct device *dev = &asus->platform_device->dev;
> u8 r, g, b;
> int err;
> @@ -1075,7 +1172,7 @@ static void asus_wmi_led_exit(struct asus_wmi
> *asus)
> led_classdev_unregister(&asus->tpd_led);
> led_classdev_unregister(&asus->wlan_led);
> led_classdev_unregister(&asus->lightbar_led);
> - led_classdev_multicolor_unregister(&asus->keyboard_rgb_mode.dev);
> + led_classdev_multicolor_unregister(&asus->keyboard_rgb_led.dev);
>
> if (asus->led_workqueue)
> destroy_workqueue(asus->led_workqueue);
> @@ -1148,8 +1245,8 @@ static int asus_wmi_led_init(struct asus_wmi
> *asus)
> }
>
> if (asus_wmi_dev_is_present(asus, ASUS_WMI_DEVID_TUF_RGB_MODE)) {
> - struct mc_subled *mc_led_info =
> asus->keyboard_rgb_mode.subled_info;
> - struct led_classdev_mc *mc_cdev = &asus->keyboard_rgb_mode.dev;
> + struct mc_subled *mc_led_info = asus->keyboard_rgb_led.subled_info;
> + struct led_classdev_mc *mc_cdev = &asus->keyboard_rgb_led.dev;
> struct device *dev = &asus->platform_device->dev;
> u8 led_brightness = 255;
>
> @@ -1174,9 +1271,9 @@ static int asus_wmi_led_init(struct asus_wmi
> *asus)
> * It's not possible to get last set data from device so set
> defaults
> * to make it safe for a user to change either RGB or modes.
> */
> - asus->keyboard_rgb_mode.save = 1;
> - asus->keyboard_rgb_mode.mode = 0;
> - asus->keyboard_rgb_mode.speed = 0xeb;
> + asus->keyboard_rgb_led.save = 1;
> + asus->keyboard_rgb_led.mode = 0;
> + asus->keyboard_rgb_led.speed = 0xeb;
>
> mc_cdev->led_cdev.brightness = led_brightness;
> mc_cdev->led_cdev.max_brightness = led_brightness;
> @@ -3338,6 +3435,9 @@ static struct attribute *platform_attributes[]
> = {
> &dev_attr_touchpad.attr,
> &dev_attr_egpu_enable.attr,
> &dev_attr_dgpu_disable.attr,
> + &dev_attr_keyboard_rgb_save.attr,
> + &dev_attr_keyboard_rgb_mode.attr,
> + &dev_attr_keyboard_rgb_speed.attr,
> &dev_attr_lid_resume.attr,
> &dev_attr_als_enable.attr,
> &dev_attr_fan_boost_mode.attr,
> @@ -3368,6 +3468,12 @@ static umode_t asus_sysfs_is_visible(struct
> kobject *kobj,
> ok = asus->egpu_enable_available;
> else if (attr == &dev_attr_dgpu_disable.attr)
> ok = asus->dgpu_disable_available;
> + else if (attr == &dev_attr_keyboard_rgb_save.attr)
> + ok = asus->keyboard_rgb_mode_available;
> + else if (attr == &dev_attr_keyboard_rgb_mode.attr)
> + ok = asus->keyboard_rgb_mode_available;
> + else if (attr == &dev_attr_keyboard_rgb_speed.attr)
> + ok = asus->keyboard_rgb_mode_available;
> else if (attr == &dev_attr_fan_boost_mode.attr)
> ok = asus->fan_boost_mode_available;
> else if (attr == &dev_attr_throttle_thermal_policy.attr)
> @@ -3637,6 +3743,10 @@ static int asus_wmi_add(struct platform_device
> *pdev)
> if (err)
> goto fail_dgpu_disable;
>
> + err = keyboard_rgb_check_present(asus);
> + if (err)
> + goto fail_keyboard_rgb_mode;
> +
> err = fan_boost_mode_check_present(asus);
> if (err)
> goto fail_fan_boost_mode;
> @@ -3751,6 +3861,7 @@ static int asus_wmi_add(struct platform_device
> *pdev)
> fail_fan_boost_mode:
> fail_egpu_enable:
> fail_dgpu_disable:
> +fail_keyboard_rgb_mode:
> fail_platform:
> fail_panel_od:
> kfree(asus);
> --
> 2.37.1
>


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