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Subject[PATCH 1/1] alienware-wmi: make hdmi_mux enabled on case-by-case basis
Date
Not all HW supporting WMAX method will support the HDMI mux feature.
Explicitly quirk the HW that does support it.

Signed-off-by: Mario Limonciello <mario_limonciello@dell.com>
---
drivers/platform/x86/alienware-wmi.c | 22 ++++++++++++++++++++--
1 file changed, 20 insertions(+), 2 deletions(-)

diff --git a/drivers/platform/x86/alienware-wmi.c b/drivers/platform/x86/alienware-wmi.c
index 297b664..7b1fe5f 100644
--- a/drivers/platform/x86/alienware-wmi.c
+++ b/drivers/platform/x86/alienware-wmi.c
@@ -59,16 +59,24 @@ enum WMAX_CONTROL_STATES {

struct quirk_entry {
u8 num_zones;
+ u8 hdmi_mux;
};

static struct quirk_entry *quirks;

static struct quirk_entry quirk_unknown = {
.num_zones = 2,
+ .hdmi_mux = 0,
};

static struct quirk_entry quirk_x51_family = {
.num_zones = 3,
+ .hdmi_mux = 0,
+};
+
+static struct quirk_entry quirk_asm100 = {
+ .num_zones = 2,
+ .hdmi_mux = 1,
};

static int dmi_matched(const struct dmi_system_id *dmi)
@@ -96,6 +104,15 @@ static struct dmi_system_id alienware_quirks[] = {
},
.driver_data = &quirk_x51_family,
},
+ {
+ .callback = dmi_matched,
+ .ident = "Alienware ASM100",
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Alienware"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "ASM100"),
+ },
+ .driver_data = &quirk_asm100,
+ },
{}
};

@@ -537,7 +554,8 @@ static struct attribute_group hdmi_attribute_group = {

static void remove_hdmi(struct platform_device *dev)
{
- sysfs_remove_group(&dev->dev.kobj, &hdmi_attribute_group);
+ if (quirks->hdmi_mux > 0)
+ sysfs_remove_group(&dev->dev.kobj, &hdmi_attribute_group);
}

static int create_hdmi(struct platform_device *dev)
@@ -583,7 +601,7 @@ static int __init alienware_wmi_init(void)
if (ret)
goto fail_platform_device2;

- if (interface == WMAX) {
+ if (quirks->hdmi_mux > 0) {
ret = create_hdmi(platform_device);
if (ret)
goto fail_prep_hdmi;
--
1.9.1


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