ALSA: hda - Fix pin configurations for MacBook Air 4,2

MacBook Air 4,2 requires the whole default pin configuration table to
be overridden by the driver, as usual, as Apple's machines don't set
up properly after boot.  Otherwise mic won't work, and other ill
effect may happen.

Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=59381
Reported-and-tested-by: Peter John Hartman <peterjohnhartman@gmail.com>
Cc: <stable@vger.kernel.org> [v3.9+]
Signed-off-by: Takashi Iwai <tiwai@suse.de>
diff --git a/sound/pci/hda/patch_cirrus.c b/sound/pci/hda/patch_cirrus.c
index bd8d46c..cccaf9c 100644
--- a/sound/pci/hda/patch_cirrus.c
+++ b/sound/pci/hda/patch_cirrus.c
@@ -58,6 +58,7 @@
 	CS420X_GPIO_23,
 	CS420X_MBP101,
 	CS420X_MBP81,
+	CS420X_MBA42,
 	CS420X_AUTO,
 	/* aliases */
 	CS420X_IMAC27_122 = CS420X_GPIO_23,
@@ -346,6 +347,7 @@
 	{ .id = CS420X_APPLE, .name = "apple" },
 	{ .id = CS420X_MBP101, .name = "mbp101" },
 	{ .id = CS420X_MBP81, .name = "mbp81" },
+	{ .id = CS420X_MBA42, .name = "mba42" },
 	{}
 };
 
@@ -361,6 +363,7 @@
 	SND_PCI_QUIRK(0x106b, 0x1c00, "MacBookPro 8,1", CS420X_MBP81),
 	SND_PCI_QUIRK(0x106b, 0x2000, "iMac 12,2", CS420X_IMAC27_122),
 	SND_PCI_QUIRK(0x106b, 0x2800, "MacBookPro 10,1", CS420X_MBP101),
+	SND_PCI_QUIRK(0x106b, 0x5b00, "MacBookAir 4,2", CS420X_MBA42),
 	SND_PCI_QUIRK_VENDOR(0x106b, "Apple", CS420X_APPLE),
 	{} /* terminator */
 };
@@ -414,6 +417,20 @@
 	{} /* terminator */
 };
 
+static const struct hda_pintbl mba42_pincfgs[] = {
+	{ 0x09, 0x012b4030 }, /* HP */
+	{ 0x0a, 0x400000f0 },
+	{ 0x0b, 0x90100120 }, /* speaker */
+	{ 0x0c, 0x400000f0 },
+	{ 0x0d, 0x90a00110 }, /* mic */
+	{ 0x0e, 0x400000f0 },
+	{ 0x0f, 0x400000f0 },
+	{ 0x10, 0x400000f0 },
+	{ 0x12, 0x400000f0 },
+	{ 0x15, 0x400000f0 },
+	{} /* terminator */
+};
+
 static void cs420x_fixup_gpio_13(struct hda_codec *codec,
 				 const struct hda_fixup *fix, int action)
 {
@@ -482,6 +499,12 @@
 		.chained = true,
 		.chain_id = CS420X_GPIO_13,
 	},
+	[CS420X_MBA42] = {
+		.type = HDA_FIXUP_PINS,
+		.v.pins = mba42_pincfgs,
+		.chained = true,
+		.chain_id = CS420X_GPIO_13,
+	},
 };
 
 static struct cs_spec *cs_alloc_spec(struct hda_codec *codec, int vendor_nid)