Added driver for HiFiBerry Amp amplifier add-on board

arch/arm/configs/bcmrpi_defconfig

@@ -754,6 +754,7 @@ CONFIG_SND_BCM2708_SOC_I2S=m
 CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC=m
 CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS=m
 CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI=m
+CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP=m
 CONFIG_SND_BCM2708_SOC_RPI_DAC=m
 CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC=m
 CONFIG_SOUND_PRIME=m

arch/arm/mach-bcm2708/bcm2708.c

@@ -680,6 +680,20 @@ static struct i2c_board_info __initdata snd_wm8804_i2c_devices[] = {
 
 #endif
 
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP_MODULE)
+static struct platform_device snd_hifiberry_amp_device = {
+        .name = "snd-hifiberry-amp",
+        .id = 0,
+        .num_resources = 0,
+};
+
+static struct i2c_board_info __initdata snd_tas5713_i2c_devices[] = {
+        {
+                I2C_BOARD_INFO("tas5713", 0x1b)
+        },
+};
+#endif
+
 #if defined(CONFIG_SND_BCM2708_SOC_RPI_DAC) || defined(CONFIG_SND_BCM2708_SOC_RPI_DAC_MODULE)
 static struct platform_device snd_rpi_dac_device = {
         .name = "snd-rpi-dac",
@@ -852,6 +866,12 @@ void __init bcm2708_init(void)
         i2c_register_board_info(1, snd_wm8804_i2c_devices, ARRAY_SIZE(snd_wm8804_i2c_devices));
 #endif
 
+#if defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) || defined(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP_MODULE)
+        bcm_register_device(&snd_hifiberry_amp_device);
+        i2c_register_board_info(1, snd_tas5713_i2c_devices, ARRAY_SIZE(snd_tas5713_i2c_devices));
+#endif
+
+
 #if defined(CONFIG_SND_BCM2708_SOC_RPI_DAC) || defined(CONFIG_SND_BCM2708_SOC_RPI_DAC_MODULE)
         bcm_register_device(&snd_rpi_dac_device);
         bcm_register_device(&snd_pcm1794a_codec_device);

sound/soc/bcm/Kconfig

@@ -30,6 +30,13 @@ config SND_BCM2708_SOC_HIFIBERRY_DIGI
         help
          Say Y or M if you want to add support for HifiBerry Digi S/PDIF output board.
 
+config SND_BCM2708_SOC_HIFIBERRY_AMP
+        tristate "Support for the HifiBerry Amp"
+        depends on SND_BCM2708_SOC_I2S
+        select SND_SOC_TAS5713
+        help
+         Say Y or M if you want to add support for the HifiBerry Amp amplifier board.
+
 config SND_BCM2708_SOC_RPI_DAC
         tristate "Support for RPi-DAC"
         depends on SND_BCM2708_SOC_I2S

sound/soc/bcm/Makefile

@@ -7,11 +7,13 @@ obj-$(CONFIG_SND_BCM2708_SOC_I2S) += snd-soc-bcm2708-i2s.o
 snd-soc-hifiberry-dac-objs := hifiberry_dac.o
 snd-soc-hifiberry-dacplus-objs := hifiberry_dacplus.o
 snd-soc-hifiberry-digi-objs := hifiberry_digi.o
+snd-soc-hifiberry-amp-objs := hifiberry_amp.o
 snd-soc-rpi-dac-objs := rpi-dac.o
 snd-soc-iqaudio-dac-objs := iqaudio-dac.o
 
 obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DAC) += snd-soc-hifiberry-dac.o
 obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DACPLUS) += snd-soc-hifiberry-dacplus.o
 obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_DIGI) += snd-soc-hifiberry-digi.o
+obj-$(CONFIG_SND_BCM2708_SOC_HIFIBERRY_AMP) += snd-soc-hifiberry-amp.o
 obj-$(CONFIG_SND_BCM2708_SOC_RPI_DAC) += snd-soc-rpi-dac.o
 obj-$(CONFIG_SND_BCM2708_SOC_IQAUDIO_DAC) += snd-soc-iqaudio-dac.o

sound/soc/bcm/hifiberry_amp.c

@@ -0,0 +1,106 @@
+/*
+ * ASoC Driver for HifiBerry AMP
+ *
+ * Author:	Sebastian Eickhoff <[email protected]>
+ *		Copyright 2014
+ *
+ * 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>
+
+static int snd_rpi_hifiberry_amp_init(struct snd_soc_pcm_runtime *rtd)
+{
+	// ToDo: init of the dsp-registers.
+	return 0;
+}
+
+static int snd_rpi_hifiberry_amp_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 *cpu_dai = rtd->cpu_dai;
+
+	return snd_soc_dai_set_bclk_ratio(cpu_dai, 64);
+}
+
+static struct snd_soc_ops snd_rpi_hifiberry_amp_ops = {
+	.hw_params = snd_rpi_hifiberry_amp_hw_params,
+};
+
+static struct snd_soc_dai_link snd_rpi_hifiberry_amp_dai[] = {
+    {
+		.name			= "HifiBerry AMP",
+		.stream_name	= "HifiBerry AMP HiFi",
+		.cpu_dai_name	= "bcm2708-i2s.0",
+		.codec_dai_name	= "tas5713-hifi",
+		.platform_name	= "bcm2708-i2s.0",
+		.codec_name		= "tas5713.1-001b",
+		.dai_fmt		= SND_SOC_DAIFMT_I2S |
+						  SND_SOC_DAIFMT_NB_NF |
+						  SND_SOC_DAIFMT_CBS_CFS,
+		.ops			= &snd_rpi_hifiberry_amp_ops,
+		.init			= snd_rpi_hifiberry_amp_init,
+	},
+};
+
+
+static struct snd_soc_card snd_rpi_hifiberry_amp = {
+	.name         = "snd_rpi_hifiberry_amp",
+	.dai_link     = snd_rpi_hifiberry_amp_dai,
+	.num_links    = ARRAY_SIZE(snd_rpi_hifiberry_amp_dai),
+};
+
+
+static int snd_rpi_hifiberry_amp_probe(struct platform_device *pdev)
+{
+	int ret = 0;
+
+	snd_rpi_hifiberry_amp.dev = &pdev->dev;
+
+	ret = snd_soc_register_card(&snd_rpi_hifiberry_amp);
+
+	if (ret != 0) {
+		dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n", ret);
+	}
+
+	return ret;
+}
+
+
+static int snd_rpi_hifiberry_amp_remove(struct platform_device *pdev)
+{
+	return snd_soc_unregister_card(&snd_rpi_hifiberry_amp);
+}
+
+
+static struct platform_driver snd_rpi_hifiberry_amp_driver = {
+        .driver = {
+                .name   = "snd-hifiberry-amp",
+                .owner  = THIS_MODULE,
+        },
+        .probe          = snd_rpi_hifiberry_amp_probe,
+        .remove         = snd_rpi_hifiberry_amp_remove,
+};
+
+
+module_platform_driver(snd_rpi_hifiberry_amp_driver);
+
+
+MODULE_AUTHOR("Sebastian Eickhoff <[email protected]>");
+MODULE_DESCRIPTION("ASoC driver for HiFiBerry-AMP");
+MODULE_LICENSE("GPL v2");

sound/soc/codecs/Kconfig

@@ -74,6 +74,7 @@ config SND_SOC_ALL_CODECS
 	select SND_SOC_STA529 if I2C
 	select SND_SOC_STAC9766 if SND_SOC_AC97_BUS
 	select SND_SOC_TAS5086 if I2C
+	select SND_SOC_TAS5713 if I2C
 	select SND_SOC_TLV320AIC23 if I2C
 	select SND_SOC_TLV320AIC26 if SPI_MASTER
 	select SND_SOC_TLV320AIC32X4 if I2C
@@ -364,6 +365,9 @@ config SND_SOC_STAC9766
 config SND_SOC_TAS5086
 	tristate
 
+config SND_SOC_TAS5713
+	tristate
+
 config SND_SOC_TLV320AIC23
 	tristate
 

sound/soc/codecs/Makefile

@@ -65,6 +65,7 @@ snd-soc-sta32x-objs := sta32x.o
 snd-soc-sta529-objs := sta529.o
 snd-soc-stac9766-objs := stac9766.o
 snd-soc-tas5086-objs := tas5086.o
+snd-soc-tas5713-objs := tas5713.o
 snd-soc-tlv320aic23-objs := tlv320aic23.o
 snd-soc-tlv320aic26-objs := tlv320aic26.o
 snd-soc-tlv320aic3x-objs := tlv320aic3x.o
@@ -198,6 +199,7 @@ obj-$(CONFIG_SND_SOC_STA32X)   += snd-soc-sta32x.o
 obj-$(CONFIG_SND_SOC_STA529)   += snd-soc-sta529.o
 obj-$(CONFIG_SND_SOC_STAC9766)	+= snd-soc-stac9766.o
 obj-$(CONFIG_SND_SOC_TAS5086)	+= snd-soc-tas5086.o
+obj-$(CONFIG_SND_SOC_TAS5713)	+= snd-soc-tas5713.o
 obj-$(CONFIG_SND_SOC_TLV320AIC23)	+= snd-soc-tlv320aic23.o
 obj-$(CONFIG_SND_SOC_TLV320AIC26)	+= snd-soc-tlv320aic26.o
 obj-$(CONFIG_SND_SOC_TLV320AIC3X)	+= snd-soc-tlv320aic3x.o