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platform/x86: huawei-wmi: Add quirks and module parameters

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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.bagabas@gmail.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
This commit is contained in:
Ayman Bagabas
2019-09-23 22:48:07 -04:00
committed by Andy Shevchenko
parent 1ac9abeb2e
commit 8a480c108f
1 changed files with 73 additions and 0 deletions
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73
drivers/platform/x86/huawei-wmi.c
View File

@@ -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;