brcm2708: add 3.14 support

Signed-off-by: Florian Fainelli <florian@openwrt.org>

git-svn-id: svn://svn.openwrt.org/openwrt/trunk@42680 3c298f89-4303-0410-b956-a3cf2f4a3e73

1 files changed, 208 insertions, 0 deletions

diff --git a/target/linux/brcm2708/patches-3.14/0044-ASoC-BCM-Add-support-for-HiFiBerry-Digi.-Driver-is-b.patch b/target/linux/brcm2708/patches-3.14/0044-ASoC-BCM-Add-support-for-HiFiBerry-Digi.-Driver-is-b.patch
new file mode 100644
index 0000000000..c1c4604e36
--- /dev/null
+++ b/target/linux/brcm2708/patches-3.14/0044-ASoC-BCM-Add-support-for-HiFiBerry-Digi.-Driver-is-b.patch
@@ -0,0 +1,208 @@
+From dad63ece33a339a45c992915eae9d7d8885e98c7 Mon Sep 17 00:00:00 2001
+From: Daniel Matuschek <info@crazy-audio.com>
+Date: Wed, 15 Jan 2014 21:42:08 +0100
+Subject: [PATCH 44/54] ASoC: BCM:Add support for HiFiBerry Digi. Driver is
+ based on the patched WM8804 driver.
+
+Signed-off-by: Daniel Matuschek <daniel@matuschek.net>
+---
+ sound/soc/bcm/Kconfig          |   7 ++
+ sound/soc/bcm/Makefile         |   2 +
+ sound/soc/bcm/hifiberry_digi.c | 153 +++++++++++++++++++++++++++++++++++++++++
+ 3 files changed, 162 insertions(+)
+ create mode 100644 sound/soc/bcm/hifiberry_digi.c
+
+diff --git a/sound/soc/bcm/Kconfig b/sound/soc/bcm/Kconfig
+index 714841d..e563dbc 100644
+--- a/sound/soc/bcm/Kconfig
++++ b/sound/soc/bcm/Kconfig
+@@ -26,6 +26,13 @@ config SND_BCM2708_SOC_HIFIBERRY_DAC
+         help
+          Say Y or M if you want to add support for HifiBerry DAC.
+ 
++config SND_BCM2708_SOC_HIFIBERRY_DIGI
++        tristate "Support for HifiBerry Digi"
++        depends on SND_BCM2708_SOC_I2S
++        select SND_SOC_WM8804
++        help
++         Say Y or M if you want to add support for HifiBerry Digi S/PDIF output board.
++
+ config SND_BCM2708_SOC_RPI_DAC
+         tristate "Support for RPi-DAC"
+         depends on SND_BCM2708_SOC_I2S
+diff --git a/sound/soc/bcm/Makefile b/sound/soc/bcm/Makefile
+index ccc9809..826df7d 100644
+--- a/sound/soc/bcm/Makefile
++++ b/sound/soc/bcm/Makefile
+@@ -10,7 +10,9 @@ obj-$(CONFIG_SND_BCM2708_SOC_I2S) += snd-soc-bcm2708-i2s.o
+ 
+ # BCM2708 Machine Support
+ snd-soc-hifiberry-dac-objs := hifiberry_dac.o
++snd-soc-hifiberry-digi-objs := hifiberry_digi.o
+ snd-soc-rpi-dac-objs := rpi-dac.o
+ 
+ obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
++obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
+ obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
+diff --git a/sound/soc/bcm/hifiberry_digi.c b/sound/soc/bcm/hifiberry_digi.c
+new file mode 100644
+index 0000000..e4f769d
+--- /dev/null
++++ b/sound/soc/bcm/hifiberry_digi.c
+@@ -0,0 +1,153 @@
++/*
++ * ASoC Driver for HifiBerry Digi
++ *
++ * Author: Daniel Matuschek <info@crazy-audio.com>
++ * based on the HifiBerry DAC driver by Florian Meier <florian.meier@koalo.de>
++ *	Copyright 2013
++ *
++ * This program is free software; you can redistribute it and/or
++ * modify it under the terms of the GNU General Public License
++ * version 2 as published by the Free Software Foundation.
++ *
++ * This program is distributed in the hope that it will be useful, but
++ * WITHOUT ANY WARRANTY; without even the implied warranty of
++ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
++ * General Public License for more details.
++ */
++
++#include <linux/module.h>
++#include <linux/platform_device.h>
++
++#include <sound/core.h>
++#include <sound/pcm.h>
++#include <sound/pcm_params.h>
++#include <sound/soc.h>
++#include <sound/jack.h>
++
++#include "../codecs/wm8804.h"
++
++static int samplerate=44100;
++
++static int snd_rpi_hifiberry_digi_init(struct snd_soc_pcm_runtime *rtd)
++{
++	struct snd_soc_codec *codec = rtd->codec;
++
++	/* enable TX output */
++	snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
++
++	return 0;
++}
++
++static int snd_rpi_hifiberry_digi_hw_params(struct snd_pcm_substream *substream,
++				       struct snd_pcm_hw_params *params)
++{
++	struct snd_soc_pcm_runtime *rtd = substream->private_data;
++	struct snd_soc_dai *codec_dai = rtd->codec_dai;
++	struct snd_soc_codec *codec = rtd->codec;
++	struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
++
++	int sysclk = 27000000; /* This is fixed on this board */
++
++	long mclk_freq=0;
++	int mclk_div=1;
++
++	int ret;
++
++	samplerate = params_rate(params);
++
++	switch (samplerate) {
++		case 44100:
++		case 48000:
++		case 88200:
++		case 96000:
++			mclk_freq=samplerate*256;
++			mclk_div=WM8804_MCLKDIV_256FS;
++			break;
++		case 176400:
++		case 192000:
++			mclk_freq=samplerate*128;
++			mclk_div=WM8804_MCLKDIV_128FS;
++			break;
++		default:
++			dev_err(substream->pcm->dev,
++			"Failed to set WM8804 SYSCLK, unsupported samplerate\n");
++	}
++
++	snd_soc_dai_set_clkdiv(codec_dai, WM8804_MCLK_DIV, mclk_div);
++	snd_soc_dai_set_pll(codec_dai, 0, 0, sysclk, mclk_freq);
++
++	ret = snd_soc_dai_set_sysclk(codec_dai, WM8804_TX_CLKSRC_PLL,
++					sysclk, SND_SOC_CLOCK_OUT);
++	if (ret < 0) {
++		dev_err(substream->pcm->dev,
++		"Failed to set WM8804 SYSCLK: %d\n", ret);
++		return ret;
++	}
++
++	/* Enable TX output */
++	snd_soc_update_bits(codec, WM8804_PWRDN, 0x4, 0x0);
++
++	/* Power on */
++	snd_soc_update_bits(codec, WM8804_PWRDN, 0x9, 0);
++
++	return snd_soc_dai_set_bclk_ratio(cpu_dai,64);
++}
++
++/* machine stream operations */
++static struct snd_soc_ops snd_rpi_hifiberry_digi_ops = {
++	.hw_params = snd_rpi_hifiberry_digi_hw_params,
++};
++
++static struct snd_soc_dai_link snd_rpi_hifiberry_digi_dai[] = {
++{
++	.name		= "HifiBerry Digi",
++	.stream_name	= "HifiBerry Digi HiFi",
++	.cpu_dai_name	= "bcm2708-i2s.0",
++	.codec_dai_name	= "wm8804-spdif",
++	.platform_name	= "bcm2708-i2s.0",
++	.codec_name	= "wm8804.1-003b",
++	.dai_fmt	= SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
++				SND_SOC_DAIFMT_CBM_CFM,
++	.ops		= &snd_rpi_hifiberry_digi_ops,
++	.init		= snd_rpi_hifiberry_digi_init,
++},
++};
++
++/* audio machine driver */
++static struct snd_soc_card snd_rpi_hifiberry_digi = {
++	.name         = "snd_rpi_hifiberry_digi",
++	.dai_link     = snd_rpi_hifiberry_digi_dai,
++	.num_links    = ARRAY_SIZE(snd_rpi_hifiberry_digi_dai),
++};
++
++static int snd_rpi_hifiberry_digi_probe(struct platform_device *pdev)
++{
++	int ret = 0;
++
++	snd_rpi_hifiberry_digi.dev = &pdev->dev;
++	ret = snd_soc_register_card(&snd_rpi_hifiberry_digi);
++	if (ret)
++		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
++
++	return ret;
++}
++
++static int snd_rpi_hifiberry_digi_remove(struct platform_device *pdev)
++{
++	return snd_soc_unregister_card(&snd_rpi_hifiberry_digi);
++}
++
++static struct platform_driver snd_rpi_hifiberry_digi_driver = {
++	.driver = {
++		.name   = "snd-hifiberry-digi",
++		.owner  = THIS_MODULE,
++	},
++	.probe          = snd_rpi_hifiberry_digi_probe,
++	.remove         = snd_rpi_hifiberry_digi_remove,
++};
++
++module_platform_driver(snd_rpi_hifiberry_digi_driver);
++
++MODULE_AUTHOR("Daniel Matuschek <info@crazy-audio.com>");
++MODULE_DESCRIPTION("ASoC Driver for HifiBerry Digi");
++MODULE_LICENSE("GPL v2");
+-- 
+1.9.1
+