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Jones" To: hdegoede@redhat.com Cc: markgross@kernel.org, platform-driver-x86@vger.kernel.org, linux-kernel@vger.kernel.org, andy.shevchenko@gmail.com, pobrn@protonmail.com, pavel@ucw.cz, "Luke D. Jones" Subject: [PATCH v4 1/2] asus-wmi: Implement TUF laptop keyboard LED modes Date: Fri, 26 Aug 2022 11:22:50 +1200 Message-Id: <20220825232251.345893-2-luke@ljones.dev> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20220825232251.345893-1-luke@ljones.dev> References: <20220825232251.345893-1-luke@ljones.dev> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Adds support for changing the laptop keyboard LED mode and colour. The modes are visible effects such as static, rainbow, pulsing, colour cycles. These sysfs attributes are added to asus::kbd_backlight: - kbd_rgb_mode - kbd_rgb_mode_index Signed-off-by: Luke D. Jones --- drivers/platform/x86/asus-wmi.c | 76 +++++++++++++++++++++- include/linux/platform_data/x86/asus-wmi.h | 3 + 2 files changed, 78 insertions(+), 1 deletion(-) diff --git a/drivers/platform/x86/asus-wmi.c b/drivers/platform/x86/asus-wm= i.c index 0f9f79f249c7..92f16bb9b4ef 100644 --- a/drivers/platform/x86/asus-wmi.c +++ b/drivers/platform/x86/asus-wmi.c @@ -237,6 +237,8 @@ struct asus_wmi { bool dgpu_disable_available; bool gpu_mux_mode_available; =20 + bool kbd_rgb_mode_available; + bool throttle_thermal_policy_available; u8 throttle_thermal_policy_mode; =20 @@ -720,6 +722,69 @@ static ssize_t gpu_mux_mode_store(struct device *dev, } static DEVICE_ATTR_RW(gpu_mux_mode); =20 +/* TUF Laptop Keyboard RGB Modes *****************************************= *****/ +static ssize_t kbd_rgb_mode_store(struct device *dev, + struct device_attribute *attr, + const char *buf, size_t count) +{ + u32 cmd, mode, r, g, b, speed; + int err; + + if (sscanf(buf, "%d %d %d %d %d %d", &cmd, &mode, &r, &g, &b, &speed) != =3D 6) + return -EINVAL; + + cmd =3D !!cmd; + + /* These are the known usable modes across all TUF/ROG */ + if (mode >=3D 12 || mode =3D=3D 9) + mode =3D 10; + + switch (speed) { + case 0: + speed =3D 0xe1; + break; + case 1: + speed =3D 0xeb; + break; + case 2: + speed =3D 0xf5; + break; + default: + speed =3D 0xeb; + } + + err =3D asus_wmi_evaluate_method3(ASUS_WMI_METHODID_DEVS, ASUS_WMI_DEVID_= TUF_RGB_MODE, + cmd | (mode << 8) | (r << 16) | (g << 24), b | (speed << 8), NULL); + if (err) + return err; + + return count; +} +static DEVICE_ATTR_WO(kbd_rgb_mode); + +static ssize_t kbd_rgb_mode_index_show(struct device *device, + struct device_attribute *attr, + char *buf) +{ + return sysfs_emit(buf, "%s\n", "cmd mode red green blue speed"); +} +static DEVICE_ATTR_RO(kbd_rgb_mode_index); + +static struct attribute *kbd_rgb_mode_attrs[] =3D { + &dev_attr_kbd_rgb_mode.attr, + &dev_attr_kbd_rgb_mode_index.attr, + NULL, +}; + +static const struct attribute_group kbd_rgb_mode_group =3D { + .attrs =3D kbd_rgb_mode_attrs, +}; + +const struct attribute_group *kbd_rgb_mode_groups[] =3D { + NULL, + NULL, +}; + /* Battery ***************************************************************= *****/ =20 /* The battery maximum charging percentage */ @@ -1038,7 +1103,10 @@ static void asus_wmi_led_exit(struct asus_wmi *asus) =20 static int asus_wmi_led_init(struct asus_wmi *asus) { - int rv =3D 0, led_val; + int rv =3D 0, num_rgb_groups =3D 0, led_val; + + if (asus->kbd_rgb_mode_available) + kbd_rgb_mode_groups[num_rgb_groups++] =3D &kbd_rgb_mode_group; =20 asus->led_workqueue =3D create_singlethread_workqueue("led_workqueue"); if (!asus->led_workqueue) @@ -1066,6 +1134,9 @@ static int asus_wmi_led_init(struct asus_wmi *asus) asus->kbd_led.brightness_get =3D kbd_led_get; asus->kbd_led.max_brightness =3D 3; =20 + if (num_rgb_groups !=3D 0) + asus->kbd_led.groups =3D kbd_rgb_mode_groups; + rv =3D led_classdev_register(&asus->platform_device->dev, &asus->kbd_led); if (rv) @@ -3253,6 +3324,8 @@ static umode_t asus_sysfs_is_visible(struct kobject *= kobj, ok =3D asus->egpu_enable_available; else if (attr =3D=3D &dev_attr_dgpu_disable.attr) ok =3D asus->dgpu_disable_available; + else if (attr =3D=3D &dev_attr_dgpu_disable.attr) + ok =3D asus->dgpu_disable_available; else if (attr =3D=3D &dev_attr_gpu_mux_mode.attr) ok =3D asus->gpu_mux_mode_available; else if (attr =3D=3D &dev_attr_fan_boost_mode.attr) @@ -3519,6 +3592,7 @@ static int asus_wmi_add(struct platform_device *pdev) asus->egpu_enable_available =3D asus_wmi_dev_is_present(asus, ASUS_WMI_DE= VID_EGPU); asus->dgpu_disable_available =3D asus_wmi_dev_is_present(asus, ASUS_WMI_D= EVID_DGPU); asus->gpu_mux_mode_available =3D asus_wmi_dev_is_present(asus, ASUS_WMI_D= EVID_GPU_MUX); + asus->kbd_rgb_mode_available =3D asus_wmi_dev_is_present(asus, ASUS_WMI_D= EVID_TUF_RGB_MODE); asus->panel_overdrive_available =3D asus_wmi_dev_is_present(asus, ASUS_WM= I_DEVID_PANEL_OD); =20 err =3D fan_boost_mode_check_present(asus); diff --git a/include/linux/platform_data/x86/asus-wmi.h b/include/linux/pla= tform_data/x86/asus-wmi.h index 6e8a95c10d17..3d861477cb20 100644 --- a/include/linux/platform_data/x86/asus-wmi.h +++ b/include/linux/platform_data/x86/asus-wmi.h @@ -103,6 +103,9 @@ /* gpu mux switch, 0 =3D dGPU, 1 =3D Optimus */ #define ASUS_WMI_DEVID_GPU_MUX 0x00090016 =20 +/* TUF laptop RGB modes/colours */ +#define ASUS_WMI_DEVID_TUF_RGB_MODE 0x00100056 + /* DSTS masks */ #define ASUS_WMI_DSTS_STATUS_BIT 0x00000001 #define ASUS_WMI_DSTS_UNKNOWN_BIT 0x00000002 --=20 2.37.2