[PATCH v2 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 <chiu at endlessos.org>
---
  v1 -> v2:
	- Invoke callback() of the DMI quirk if it exists.

 sound/soc/codecs/rt5645.c | 29 +++++++++++++++++++++++++++++
 1 file changed, 29 insertions(+)

diff --git a/sound/soc/codecs/rt5645.c b/sound/soc/codecs/rt5645.c
index 78f0ab0a008e..94faa0a9561f 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)
@@ -3831,6 +3858,8 @@ static int rt5645_i2c_probe(struct i2c_client *i2c,
 	if (dmi_data) {
 		dev_info(&i2c->dev, "Detected %s platform\n", dmi_data->ident);
 		pdata = dmi_data->driver_data;
+		if (dmi_data->callback)
+			dmi_data->callback(dmi_data);
 	}
 
 	if (pdata)
-- 
2.20.1