brcm2708: add linux 4.9 support

Patches from Raspberry Pi repo:
https://github.com/raspberrypi/linux/commits/rpi-4.9.y

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

1 files changed, 49 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-4.9/0068-ASoC-wm8804-Implement-MCLK-configuration-options-add.patch b/target/linux/brcm2708/patches-4.9/0068-ASoC-wm8804-Implement-MCLK-configuration-options-add.patch
new file mode 100644
index 0000000000..7accb99842
--- /dev/null
+++ b/target/linux/brcm2708/patches-4.9/0068-ASoC-wm8804-Implement-MCLK-configuration-options-add.patch
@@ -0,0 +1,49 @@
+From c137d8fd4fd6a01ca8afc140cab7d7c3c39f3f33 Mon Sep 17 00:00:00 2001
+From: Daniel Matuschek <info@crazy-audio.com>
+Date: Wed, 15 Jan 2014 21:41:23 +0100
+Subject: [PATCH] ASoC: wm8804: Implement MCLK configuration options, add 32bit
+ support WM8804 can run with PLL frequencies of 256xfs and 128xfs for most
+ sample rates. At 192kHz only 128xfs is supported. The existing driver selects
+ 128xfs automatically for some lower samples rates. By using an additional
+ mclk_div divider, it is now possible to control the behaviour. This allows
+ using 256xfs PLL frequency on all sample rates up to 96kHz. It should allow
+ lower jitter and better signal quality. The behavior has to be controlled by
+ the sound card driver, because some sample frequency share the same setting.
+ e.g. 192kHz and 96kHz use 24.576MHz master clock. The only difference is the
+ MCLK divider.
+
+This also added support for 32bit data.
+
+Signed-off-by: Daniel Matuschek <daniel@matuschek.net>
+---
+ sound/soc/codecs/wm8804.c | 5 +++--
+ 1 file changed, 3 insertions(+), 2 deletions(-)
+
+--- a/sound/soc/codecs/wm8804.c
++++ b/sound/soc/codecs/wm8804.c
+@@ -304,6 +304,7 @@ static int wm8804_hw_params(struct snd_p
+ 		blen = 0x1;
+ 		break;
+ 	case 24:
++	case 32:
+ 		blen = 0x2;
+ 		break;
+ 	default:
+@@ -515,7 +516,7 @@ static const struct snd_soc_dai_ops wm88
+ };
+ 
+ #define WM8804_FORMATS (SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S20_3LE | \
+-			SNDRV_PCM_FMTBIT_S24_LE)
++			SNDRV_PCM_FMTBIT_S24_3LE | SNDRV_PCM_FMTBIT_S32_LE)
+ 
+ #define WM8804_RATES (SNDRV_PCM_RATE_32000 | SNDRV_PCM_RATE_44100 | \
+ 		      SNDRV_PCM_RATE_48000 | SNDRV_PCM_RATE_64000 | \
+@@ -543,7 +544,7 @@ static struct snd_soc_dai_driver wm8804_
+ };
+ 
+ static const struct snd_soc_codec_driver soc_codec_dev_wm8804 = {
+-	.idle_bias_off = true,
++	.idle_bias_off = false,
+ 
+ 	.component_driver = {
+ 		.dapm_widgets		= wm8804_dapm_widgets,