brcm2708: add linux 4.4 support

- random-bcm2708 and spi-bcm2708 have been removed.
- sound-soc-bcm2708-i2s has been upstreamed as sound-soc-bcm2835-i2s.

Let's keep linux 4.1 for a while, since linux 4.4 appears to have some issues
with multicast traffic on RPi ethernet:
https://gist.github.com/Noltari/5b1cfdecce5ed4bc08fd

Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>

SVN-Revision: 48266

1 files changed, 91 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.4/0086-tpa6130a2-Add-headphone-switch-control.patch b/target/linux/brcm2708/patches-4.4/0086-tpa6130a2-Add-headphone-switch-control.patch
new file mode 100644
index 0000000000..5cf76f0ddb
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.4/0086-tpa6130a2-Add-headphone-switch-control.patch
@@ -0,0 +1,91 @@
+From a7c37b3c36ccec8a089d576c55ad9ba1721cb0ef Mon Sep 17 00:00:00 2001
+From: Jan Grulich <jan@grulich.eu>
+Date: Mon, 24 Aug 2015 16:02:34 +0100
+Subject: [PATCH 086/127] tpa6130a2: Add headphone switch control
+
+Signed-off-by: Jan Grulich <jan@grulich.eu>
+---
+ sound/soc/codecs/tpa6130a2.c | 29 ++++++++++++++++++++++++++---
+ 1 file changed, 26 insertions(+), 3 deletions(-)
+
+--- a/sound/soc/codecs/tpa6130a2.c
++++ b/sound/soc/codecs/tpa6130a2.c
+@@ -4,6 +4,7 @@
+  * Copyright (C) Nokia Corporation
+  *
+  * Author: Peter Ujfalusi <peter.ujfalusi@ti.com>
++ * Modified: Jan Grulich <jan@grulich.eu>
+  *
+  * This program is free software; you can redistribute it and/or
+  * modify it under the terms of the GNU General Public License
+@@ -52,6 +53,8 @@ struct tpa6130a2_data {
+ 	enum tpa_model id;
+ };
+ 
++static void tpa6130a2_channel_enable(u8 channel, int enable);
++
+ static int tpa6130a2_i2c_read(int reg)
+ {
+ 	struct tpa6130a2_data *data;
+@@ -189,7 +192,7 @@ exit:
+ }
+ 
+ static int tpa6130a2_get_volsw(struct snd_kcontrol *kcontrol,
+-		struct snd_ctl_elem_value *ucontrol)
++			       struct snd_ctl_elem_value *ucontrol)
+ {
+ 	struct soc_mixer_control *mc =
+ 		(struct soc_mixer_control *)kcontrol->private_value;
+@@ -218,7 +221,7 @@ static int tpa6130a2_get_volsw(struct sn
+ }
+ 
+ static int tpa6130a2_put_volsw(struct snd_kcontrol *kcontrol,
+-		struct snd_ctl_elem_value *ucontrol)
++			       struct snd_ctl_elem_value *ucontrol)
+ {
+ 	struct soc_mixer_control *mc =
+ 		(struct soc_mixer_control *)kcontrol->private_value;
+@@ -255,8 +258,22 @@ static int tpa6130a2_put_volsw(struct sn
+ 	return 1;
+ }
+ 
++static int tpa6130a2_put_hp_sw(struct snd_kcontrol *kcontrol,
++			       struct snd_ctl_elem_value *ucontrol)
++{
++	int enable = ucontrol->value.integer.value[0];
++	unsigned int state;
++
++	state = (tpa6130a2_read(TPA6130A2_REG_VOL_MUTE) & 0x80) == 0;
++	if (state == enable)
++		return 0; /* No change */
++
++	tpa6130a2_channel_enable(TPA6130A2_HP_EN_R | TPA6130A2_HP_EN_L, enable);
++	return 1; /* Changed */
++}
++
+ /*
+- * TPA6130 volume. From -59.5 to 4 dB with increasing step size when going
++ * TPA6130 volume. From -59.5 to +4.0 dB with increasing step size when going
+  * down in gain.
+  */
+ static const DECLARE_TLV_DB_RANGE(tpa6130_tlv,
+@@ -277,6 +294,9 @@ static const struct snd_kcontrol_new tpa
+ 		       TPA6130A2_REG_VOL_MUTE, 0, 0x3f, 0,
+ 		       tpa6130a2_get_volsw, tpa6130a2_put_volsw,
+ 		       tpa6130_tlv),
++	SOC_SINGLE_EXT("TPA6130A2 Headphone Playback Switch",
++		       TPA6130A2_REG_VOL_MUTE, 7, 1, 1,
++		       tpa6130a2_get_volsw, tpa6130a2_put_hp_sw),
+ };
+ 
+ static const DECLARE_TLV_DB_RANGE(tpa6140_tlv,
+@@ -290,6 +310,9 @@ static const struct snd_kcontrol_new tpa
+ 		       TPA6130A2_REG_VOL_MUTE, 1, 0x1f, 0,
+ 		       tpa6130a2_get_volsw, tpa6130a2_put_volsw,
+ 		       tpa6140_tlv),
++	SOC_SINGLE_EXT("TPA6140A2 Headphone Playback Switch",
++		       TPA6130A2_REG_VOL_MUTE, 7, 1, 1,
++		       tpa6130a2_get_volsw, tpa6130a2_put_hp_sw),
+ };
+ 
+ /*