Introduce quirks and module parameters. 3 quirks are added:
1. Fixes reporting brightness keys twice since it's already handled by
acpi-video.
2. Some models need a short delay when setting battery thresholds to
prevent a race condition when two processes read/write. (will be used later)
3. Matebook X (2017) handles micmute led through the "legacy" interface
which is not currently implemented. Use ACPI EC method to control
this led. (will be used later)
2 module parameters are added to enable this short delay and/or report
brightness keys through this driver.
Signed-off-by: Ayman Bagabas <ayman.baga...@gmail.com>
---
drivers/platform/x86/huawei-wmi.c | 73 +++++++++++++++++++++++++++++++
1 file changed, 73 insertions(+)
diff --git a/drivers/platform/x86/huawei-wmi.c
b/drivers/platform/x86/huawei-wmi.c
index 9496ea3c78b5..0e919bf56ad1 100644
--- a/drivers/platform/x86/huawei-wmi.c
+++ b/drivers/platform/x86/huawei-wmi.c
@@ -6,6 +6,7 @@
*/
#include <linux/acpi.h>
+#include <linux/dmi.h>
#include <linux/input.h>
#include <linux/input/sparse-keymap.h>
#include <linux/leds.h>
@@ -22,6 +23,14 @@
#define WMI0_EXPENSIVE_GUID "39142400-C6A3-40fa-BADB-8A2652834100"
#define WMI0_EVENT_GUID "59142400-C6A3-40fa-BADB-8A2652834100"
+struct quirk_entry {
+ bool battery_reset;
+ bool ec_micmute;
+ bool report_brightness;
+};
+
+static struct quirk_entry *quirks;
+
struct huawei_wmi {
struct input_dev *idev[2];
struct led_classdev cdev;
@@ -49,6 +58,58 @@ static const struct key_entry huawei_wmi_keymap[] = {
{ KE_END, 0 }
};
+static int battery_reset = -1;
+static int report_brightness = -1;
+
+module_param(battery_reset, bint, 0444);
+MODULE_PARM_DESC(battery_reset,
+ "Reset battery charge values to (0-0) before disabling it using
(0-100)");
+module_param(report_brightness, bint, 0444);
+MODULE_PARM_DESC(report_brightness,
+ "Report brightness keys.");
+
+/* Quirks */
+
+static int __init dmi_matched(const struct dmi_system_id *dmi)
+{
+ quirks = dmi->driver_data;
+ return 1;
+}
+
+static struct quirk_entry quirk_unknown = {
+};
+
+static struct quirk_entry quirk_battery_reset = {
+ .battery_reset = true,
+};
+
+static struct quirk_entry quirk_matebook_x = {
+ .ec_micmute = true,
+ .report_brightness = true,
+};
+
+static const struct dmi_system_id huawei_quirks[] = {
+ {
+ .callback = dmi_matched,
+ .ident = "Huawei MACH-WX9",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "HUAWEI"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "MACH-WX9"),
+ },
+ .driver_data = &quirk_battery_reset
+ },
+ {
+ .callback = dmi_matched,
+ .ident = "Huawei MateBook X",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "HUAWEI"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "HUAWEI MateBook X")
+ },
+ .driver_data = &quirk_matebook_x
+ },
+ { }
+};
+
static int huawei_wmi_micmute_led_set(struct led_classdev *led_cdev,
enum led_brightness brightness)
{
@@ -139,6 +200,11 @@ static void huawei_wmi_process_key(struct input_dev *idev,
int code)
return;
}
+ if (quirks && !quirks->report_brightness &&
+ (key->sw.code == KEY_BRIGHTNESSDOWN ||
+ key->sw.code == KEY_BRIGHTNESSUP))
+ return;
+
sparse_keymap_report_entry(idev, key, 1, true);
}
@@ -253,6 +319,13 @@ static __init int huawei_wmi_init(void)
if (!huawei_wmi)
return -ENOMEM;
+ quirks = &quirk_unknown;
+ dmi_check_system(huawei_quirks);
+ if (battery_reset != -1)
+ quirks->battery_reset = battery_reset;
+ if (report_brightness != -1)
+ quirks->report_brightness = report_brightness;
+
err = platform_driver_register(&huawei_wmi_driver);
if (err)
goto pdrv_err;
--
2.21.0
