[ALSA] Add a new quirk for mute-LED and HP-only.

Modules: AC97 Codec,ATIIXP driver,Intel8x0 driver

This patch adds a new quirk for ac97 hardware that combines the existing
AC97_TUNE_MUTE_LED and AC97_TUNE_HP_ONLY quirks.  This is needed for several
current HP laptops.  Additionally, it adds the HP nx6125 to the
AC97_TUNE_MUTE_LED list.

Fixed for the latest version of ALSA by Takashi Iwai <tiwai@suse.de>.

Signed-off-by: Matthew Garrett <mjg59@srcf.ucam.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>

include/sound/ac97_codec.h

@@ -541,6 +541,7 @@ enum {
 	AC97_TUNE_ALC_JACK,	/* for Realtek, enable JACK detection */
 	AC97_TUNE_INV_EAPD,	/* inverted EAPD implementation */
 	AC97_TUNE_MUTE_LED,	/* EAPD bit works as mute LED */
+	AC97_TUNE_HP_MUTE_LED,  /* EAPD bit works as mute LED, use headphone control as master */
 };
 
 struct ac97_quirk {

sound/pci/ac97/ac97_codec.c

@@ -2457,6 +2457,41 @@ static int tune_mute_led(struct snd_ac97 *ac97)
 	return 0;
 }
 
+static int hp_master_mute_sw_put(struct snd_kcontrol *kcontrol,
+				 struct snd_ctl_elem_value *ucontrol)
+{
+	int err = bind_hp_volsw_put(kcontrol, ucontrol);
+	if (err > 0) {
+		struct snd_ac97 *ac97 = snd_kcontrol_chip(kcontrol);
+		int shift = (kcontrol->private_value >> 8) & 0x0f;
+		int rshift = (kcontrol->private_value >> 12) & 0x0f;
+		unsigned short mask;
+		if (shift != rshift)
+			mask = 0x8080;
+		else
+			mask = 0x8000;
+		snd_ac97_update_bits(ac97, AC97_POWERDOWN, 0x8000,
+				     (ac97->regs[AC97_MASTER] & mask) == mask ?
+				     0x8000 : 0);
+	}
+	return err;
+}
+
+static int tune_hp_mute_led(struct snd_ac97 *ac97)
+{
+	struct snd_kcontrol *msw = ctl_find(ac97, "Master Playback Switch", NULL);
+	struct snd_kcontrol *mvol = ctl_find(ac97, "Master Playback Volume", NULL);
+	if (! msw || ! mvol)
+		return -ENOENT;
+	msw->put = hp_master_mute_sw_put;
+	mvol->put = bind_hp_volsw_put;
+	snd_ac97_remove_ctl(ac97, "External Amplifier", NULL);
+	snd_ac97_remove_ctl(ac97, "Headphone Playback", "Switch");
+	snd_ac97_remove_ctl(ac97, "Headphone Playback", "Volume");
+	snd_ac97_update_bits(ac97, AC97_POWERDOWN, 0x8000, 0x8000); /* mute LED on */
+	return 0;
+}
+
 struct quirk_table {
 	const char *name;
 	int (*func)(struct snd_ac97 *);
@@ -2471,6 +2506,7 @@ static struct quirk_table applicable_quirks[] = {
 	{ "alc_jack", tune_alc_jack },
 	{ "inv_eapd", tune_inv_eapd },
 	{ "mute_led", tune_mute_led },
+	{ "hp_mute_led", tune_hp_mute_led },
 };
 
 /* apply the quirk with the given type */

sound/pci/atiixp.c

@@ -1353,6 +1353,12 @@ static struct ac97_quirk ac97_quirks[] __devinitdata = {
 		.name = "HP Pavilion ZV5030US",
 		.type = AC97_TUNE_MUTE_LED
 	},
+	{
+		.subvendor = 0x103c,
+		.subdevice = 0x308b,
+		.name = "HP nx6125",
+		.type = AC97_TUNE_MUTE_LED
+	},
 	{ } /* terminator */
 };
 

sound/pci/intel8x0.c

@@ -1857,6 +1857,30 @@ static struct ac97_quirk ac97_quirks[] __devinitdata = {
 		.name = "HP xw8000",
 		.type = AC97_TUNE_HP_ONLY
 	},
+	{
+		.subvendor = 0x103c,
+		.subdevice = 0x0938,
+		.name = "HP nc4200",
+		.type = AC97_TUNE_HP_MUTE_LED
+	},
+	{
+		.subvendor = 0x103c,
+		.subdevice = 0x099c,
+		.name = "HP nc6120",
+		.type = AC97_TUNE_HP_MUTE_LED
+	},
+	{
+		.subvendor = 0x103c,
+		.subdevice = 0x0944,
+		.name = "HP nc6220",
+		.type = AC97_TUNE_HP_MUTE_LED
+	},
+	{
+		.subvendor = 0x103c,
+		.subdevice = 0x0934,
+		.name = "HP nc8220",
+		.type = AC97_TUNE_HP_MUTE_LED
+	},
 	{
 		.subvendor = 0x103c,
 		.subdevice = 0x12f1,