ASoC: rt5645: Add jack detection workaround for GPD Win

GPD Win requires jd_mode=3 and the inverted flag for making the jack
detection working.  Unfortunately, the BIOS doesn't give a nice way to
match with DMI strings, and the only working way so far is to match
with the board vendor/name/version/date to some known patterns.

Hopefully other vendors won't do such a stupid setup, too...

Thanks to Hans de Goede for the DMI matching suggestion.

Suggested-by: Hans de Goede <hdegoede@redhat.com>
Tested-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index 162044d82632c5945f57ff836a498b9123837db9..308c22f5909a79e871ea0120ce31f861120efa9a 100644 (file)
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -3599,6 +3599,33 @@ static struct dmi_system_id dmi_platform_intel_broadwell[] = {
        { }
 };
 
+static struct rt5645_platform_data gpd_win_platform_data = {
+       .jd_mode = 3,
+       .inv_jd1_1 = true,
+};
+
+static const struct dmi_system_id dmi_platform_gpd_win[] = {
+       {
+               /*
+                * Match for the GPDwin which unfortunately uses somewhat
+                * generic dmi strings, which is why we test for 4 strings.
+                * Comparing against 23 other byt/cht boards, board_vendor
+                * and board_name are unique to the GPDwin, where as only one
+                * other board has the same board_serial and 3 others have
+                * the same default product_name. Also the GPDwin is the
+                * only device to have both board_ and product_name not set.
+                */
+               .ident = "GPD Win",
+               .matches = {
+                       DMI_MATCH(DMI_BOARD_VENDOR, "AMI Corporation"),
+                       DMI_MATCH(DMI_BOARD_NAME, "Default string"),
+                       DMI_MATCH(DMI_BOARD_SERIAL, "Default string"),
+                       DMI_MATCH(DMI_PRODUCT_NAME, "Default string"),
+               },
+       },
+       {}
+};
+
 static bool rt5645_check_dp(struct device *dev)
 {
        if (device_property_present(dev, "realtek,in2-differential") ||
@@ -3649,6 +3676,8 @@ static int rt5645_i2c_probe(struct i2c_client *i2c,
                rt5645_parse_dt(rt5645, &i2c->dev);
        else if (dmi_check_system(dmi_platform_intel_braswell))
                rt5645->pdata = general_platform_data;
+       else if (dmi_check_system(dmi_platform_gpd_win))
+               rt5645->pdata = gpd_win_platform_data;
 
        rt5645->gpiod_hp_det = devm_gpiod_get_optional(&i2c->dev, "hp-detect",
                                                       GPIOD_IN);