[PATCH 2/4] ASoC: rt5645: Add ACPI-defined GPIO for ECS EF20 series

[Chris Chiu]

Add the hp-detect gpio for ECS EF20 series laptops based on the
_CRS defined in DSDT table.

Method (_CRS, 0, NotSerialized)
{
  Name (SBUF, ResourceTemplate ()
  {
    I2cSerialBusV2 (0x001A, ControllerInitiated, 0x00061A80,
        AddressingMode7Bit, "\\_SB.PCI0.I2C2",
        0x00, ResourceConsumer, , Exclusive,
        )
    GpioInt (Edge, ActiveBoth, SharedAndWake, PullNone, 0x0000,
        "\\_SB.GPO3", 0x00, ResourceConsumer, ,
        )
        {   // Pin list
            0x004F
        }
    GpioIo (Shared, PullDefault, 0x0000, 0x0000, IoRestrictionInputOnly,
        "\\_SB.GPO3", 0x00, ResourceConsumer, ,
        )
        {   // Pin list
            0x004F
        }
  })
  Return (SBUF) /* \_SB_.PCI0.I2C2.RTK2._CRS.SBUF */
}

Signed-off-by: Chris Chiu <c...@endlessos.org>
---
 sound/soc/codecs/rt5645.c | 27 +++++++++++++++++++++++++++
 1 file changed, 27 insertions(+)

diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index 78f0ab0a008e..24a6acb3c12f 100644
--- a/sound/soc/codecs/rt5645.c
+++ b/sound/soc/codecs/rt5645.c
@@ -3653,6 +3653,19 @@ static const struct rt5645_platform_data 
kahlee_platform_data = {
        .jd_mode = 3,
 };
 
+static const struct acpi_gpio_params ef20_hp_detect = { 1, 0, false };
+
+static const struct acpi_gpio_mapping cht_rt5645_ef20_gpios[] = {
+       { "hp-detect-gpios", &ef20_hp_detect, 1 },
+       { },
+};
+
+static int cht_rt5645_ef20_quirk_cb(const struct dmi_system_id *id)
+{
+       cht_rt5645_gpios = cht_rt5645_ef20_gpios;
+       return 1;
+}
+
 static const struct dmi_system_id dmi_platform_data[] = {
        {
                .ident = "Chrome Buddy",
@@ -3782,6 +3795,20 @@ static const struct dmi_system_id dmi_platform_data[] = {
                },
                .driver_data = (void *)&intel_braswell_platform_data,
        },
+       {
+               .ident = "EF20",
+               .callback = cht_rt5645_ef20_quirk_cb,
+               .matches = {
+                       DMI_MATCH(DMI_PRODUCT_NAME, "EF20"),
+               },
+       },
+       {
+               .ident = "EF20EA",
+               .callback = cht_rt5645_ef20_quirk_cb,
+               .matches = {
+                       DMI_MATCH(DMI_PRODUCT_NAME, "EF20EA"),
+               },
+       },
 };
 
 static bool rt5645_check_dp(struct device *dev)
-- 
2.20.1