mirror of
git://projects.qi-hardware.com/openwrt-xburst.git
synced 2024-11-02 21:35:19 +02:00
1039 lines
27 KiB
Diff
1039 lines
27 KiB
Diff
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From def17bc36684a36ca60211759c84bcc43f4f385a Mon Sep 17 00:00:00 2001
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From: Lars-Peter Clausen <lars@metafoo.de>
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Date: Sat, 19 Jun 2010 16:50:37 +0200
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Subject: [PATCH] ASoC: Add JZ4740 ASoC support
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This patch adds ASoC support for JZ4740 SoCs I2S module.
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Signed-off-by: Lars-Peter Clausen <lars@metafoo.de>
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Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
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Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
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---
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sound/soc/Kconfig | 1 +
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sound/soc/Makefile | 1 +
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sound/soc/jz4740/Kconfig | 14 +
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sound/soc/jz4740/Makefile | 9 +
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sound/soc/jz4740/jz4740-i2s.c | 540 +++++++++++++++++++++++++++++++++++++++++
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sound/soc/jz4740/jz4740-i2s.h | 18 ++
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sound/soc/jz4740/jz4740-pcm.c | 373 ++++++++++++++++++++++++++++
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sound/soc/jz4740/jz4740-pcm.h | 22 ++
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8 files changed, 978 insertions(+), 0 deletions(-)
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create mode 100644 sound/soc/jz4740/Kconfig
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create mode 100644 sound/soc/jz4740/Makefile
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create mode 100644 sound/soc/jz4740/jz4740-i2s.c
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create mode 100644 sound/soc/jz4740/jz4740-i2s.h
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create mode 100644 sound/soc/jz4740/jz4740-pcm.c
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create mode 100644 sound/soc/jz4740/jz4740-pcm.h
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--- a/sound/soc/Kconfig
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+++ b/sound/soc/Kconfig
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@@ -36,6 +36,7 @@ source "sound/soc/s3c24xx/Kconfig"
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source "sound/soc/s6000/Kconfig"
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source "sound/soc/sh/Kconfig"
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source "sound/soc/txx9/Kconfig"
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+source "sound/soc/jz4740/Kconfig"
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# Supported codecs
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source "sound/soc/codecs/Kconfig"
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--- a/sound/soc/Makefile
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+++ b/sound/soc/Makefile
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@@ -14,3 +14,4 @@ obj-$(CONFIG_SND_SOC) += s3c24xx/
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obj-$(CONFIG_SND_SOC) += s6000/
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obj-$(CONFIG_SND_SOC) += sh/
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obj-$(CONFIG_SND_SOC) += txx9/
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+obj-$(CONFIG_SND_SOC) += jz4740/
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--- /dev/null
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+++ b/sound/soc/jz4740/Kconfig
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@@ -0,0 +1,14 @@
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+config SND_JZ4740_SOC
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+ tristate "SoC Audio for Ingenic JZ4740 SoC"
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+ depends on MACH_JZ4740 && SND_SOC
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+ help
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+ Say Y or M if you want to add support for codecs attached to
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+ the JZ4740 I2S interface. You will also need to select the audio
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+ interfaces to support below.
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+
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+config SND_JZ4740_SOC_I2S
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+ depends on SND_JZ4740_SOC
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+ tristate "SoC Audio (I2S protocol) for Ingenic JZ4740 SoC"
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+ help
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+ Say Y if you want to use I2S protocol and I2S codec on Ingenic JZ4740
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+ based boards.
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--- /dev/null
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+++ b/sound/soc/jz4740/Makefile
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@@ -0,0 +1,9 @@
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+#
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+# Jz4740 Platform Support
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+#
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+snd-soc-jz4740-objs := jz4740-pcm.o
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+snd-soc-jz4740-i2s-objs := jz4740-i2s.o
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+
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+obj-$(CONFIG_SND_JZ4740_SOC) += snd-soc-jz4740.o
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+obj-$(CONFIG_SND_JZ4740_SOC_I2S) += snd-soc-jz4740-i2s.o
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+
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--- /dev/null
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+++ b/sound/soc/jz4740/jz4740-i2s.c
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@@ -0,0 +1,540 @@
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+/*
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+ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
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+ *
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+ * This program is free software; you can redistribute it and/or modify it
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+ * under the terms of the GNU General Public License as published by the
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+ * Free Software Foundation; either version 2 of the License, or (at your
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+ * option) any later version.
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+ *
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+ * You should have received a copy of the GNU General Public License along
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+ * with this program; if not, write to the Free Software Foundation, Inc.,
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+ * 675 Mass Ave, Cambridge, MA 02139, USA.
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+ *
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+ */
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+
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+#include <linux/init.h>
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+#include <linux/io.h>
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+#include <linux/kernel.h>
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+#include <linux/module.h>
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+#include <linux/platform_device.h>
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+#include <linux/slab.h>
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+
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+#include <linux/clk.h>
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+#include <linux/delay.h>
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+
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+#include <linux/dma-mapping.h>
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+
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+#include <sound/core.h>
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+#include <sound/pcm.h>
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+#include <sound/pcm_params.h>
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+#include <sound/soc.h>
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+#include <sound/soc-dapm.h>
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+#include <sound/initval.h>
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+
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+#include "jz4740-i2s.h"
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+#include "jz4740-pcm.h"
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+
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+#define JZ_REG_AIC_CONF 0x00
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+#define JZ_REG_AIC_CTRL 0x04
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+#define JZ_REG_AIC_I2S_FMT 0x10
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+#define JZ_REG_AIC_FIFO_STATUS 0x14
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+#define JZ_REG_AIC_I2S_STATUS 0x1c
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+#define JZ_REG_AIC_CLK_DIV 0x30
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+#define JZ_REG_AIC_FIFO 0x34
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+
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+#define JZ_AIC_CONF_FIFO_RX_THRESHOLD_MASK (0xf << 12)
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+#define JZ_AIC_CONF_FIFO_TX_THRESHOLD_MASK (0xf << 8)
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+#define JZ_AIC_CONF_OVERFLOW_PLAY_LAST BIT(6)
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+#define JZ_AIC_CONF_INTERNAL_CODEC BIT(5)
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+#define JZ_AIC_CONF_I2S BIT(4)
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+#define JZ_AIC_CONF_RESET BIT(3)
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+#define JZ_AIC_CONF_BIT_CLK_MASTER BIT(2)
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+#define JZ_AIC_CONF_SYNC_CLK_MASTER BIT(1)
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+#define JZ_AIC_CONF_ENABLE BIT(0)
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+
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+#define JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET 12
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+#define JZ_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET 8
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+
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+#define JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_MASK (0x7 << 19)
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+#define JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_MASK (0x7 << 16)
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+#define JZ_AIC_CTRL_ENABLE_RX_DMA BIT(15)
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+#define JZ_AIC_CTRL_ENABLE_TX_DMA BIT(14)
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+#define JZ_AIC_CTRL_MONO_TO_STEREO BIT(11)
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+#define JZ_AIC_CTRL_SWITCH_ENDIANNESS BIT(10)
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+#define JZ_AIC_CTRL_SIGNED_TO_UNSIGNED BIT(9)
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+#define JZ_AIC_CTRL_FLUSH BIT(8)
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+#define JZ_AIC_CTRL_ENABLE_ROR_INT BIT(6)
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+#define JZ_AIC_CTRL_ENABLE_TUR_INT BIT(5)
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+#define JZ_AIC_CTRL_ENABLE_RFS_INT BIT(4)
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+#define JZ_AIC_CTRL_ENABLE_TFS_INT BIT(3)
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+#define JZ_AIC_CTRL_ENABLE_LOOPBACK BIT(2)
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+#define JZ_AIC_CTRL_ENABLE_PLAYBACK BIT(1)
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+#define JZ_AIC_CTRL_ENABLE_CAPTURE BIT(0)
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+
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+#define JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_OFFSET 19
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+#define JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_OFFSET 16
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+
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+#define JZ_AIC_I2S_FMT_DISABLE_BIT_CLK BIT(12)
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+#define JZ_AIC_I2S_FMT_ENABLE_SYS_CLK BIT(4)
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+#define JZ_AIC_I2S_FMT_MSB BIT(0)
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+
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+#define JZ_AIC_I2S_STATUS_BUSY BIT(2)
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+
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+#define JZ_AIC_CLK_DIV_MASK 0xf
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+
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+struct jz4740_i2s {
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+ struct resource *mem;
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+ void __iomem *base;
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+ dma_addr_t phys_base;
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+
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+ struct clk *clk_aic;
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+ struct clk *clk_i2s;
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+
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+ struct jz4740_pcm_config pcm_config_playback;
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+ struct jz4740_pcm_config pcm_config_capture;
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+};
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+
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+static inline uint32_t jz4740_i2s_read(const struct jz4740_i2s *i2s,
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+ unsigned int reg)
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+{
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+ return readl(i2s->base + reg);
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+}
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+
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+static inline void jz4740_i2s_write(const struct jz4740_i2s *i2s,
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+ unsigned int reg, uint32_t value)
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+{
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+ writel(value, i2s->base + reg);
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+}
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+
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+static inline struct jz4740_i2s *jz4740_dai_to_i2s(struct snd_soc_dai *dai)
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+{
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+ return dai->private_data;
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+}
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+
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+static int jz4740_i2s_startup(struct snd_pcm_substream *substream,
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+ struct snd_soc_dai *dai)
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+{
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+ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
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+ uint32_t conf, ctrl;
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+
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+ if (dai->active)
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+ return 0;
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+
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+ ctrl = jz4740_i2s_read(i2s, JZ_REG_AIC_CTRL);
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+ ctrl |= JZ_AIC_CTRL_FLUSH;
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+ jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl);
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+
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+ clk_enable(i2s->clk_i2s);
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+
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+ conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
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+ conf |= JZ_AIC_CONF_ENABLE;
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+ jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
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+
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+ return 0;
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+}
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+
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+static void jz4740_i2s_shutdown(struct snd_pcm_substream *substream,
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+ struct snd_soc_dai *dai)
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+{
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+ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
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+ uint32_t conf;
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+
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+ if (!dai->active)
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+ return;
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+
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+ conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
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+ conf &= ~JZ_AIC_CONF_ENABLE;
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+ jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
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+
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+ clk_disable(i2s->clk_i2s);
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+}
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+
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+static int jz4740_i2s_trigger(struct snd_pcm_substream *substream, int cmd,
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+ struct snd_soc_dai *dai)
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+{
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+ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
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+
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+ uint32_t ctrl;
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+ uint32_t mask;
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+
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+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
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+ mask = JZ_AIC_CTRL_ENABLE_PLAYBACK | JZ_AIC_CTRL_ENABLE_TX_DMA;
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+ else
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+ mask = JZ_AIC_CTRL_ENABLE_CAPTURE | JZ_AIC_CTRL_ENABLE_RX_DMA;
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+
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+ ctrl = jz4740_i2s_read(i2s, JZ_REG_AIC_CTRL);
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+
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+ switch (cmd) {
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+ case SNDRV_PCM_TRIGGER_START:
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+ case SNDRV_PCM_TRIGGER_RESUME:
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+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
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+ ctrl |= mask;
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+ break;
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+ case SNDRV_PCM_TRIGGER_STOP:
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+ case SNDRV_PCM_TRIGGER_SUSPEND:
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+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
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+ ctrl &= ~mask;
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+ break;
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+ default:
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+ return -EINVAL;
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+ }
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+
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+ jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl);
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+
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+ return 0;
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+}
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+
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+static int jz4740_i2s_set_fmt(struct snd_soc_dai *dai, unsigned int fmt)
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+{
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+ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
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+
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+ uint32_t format = 0;
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+ uint32_t conf;
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+
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+ conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
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+
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+ conf &= ~(JZ_AIC_CONF_BIT_CLK_MASTER | JZ_AIC_CONF_SYNC_CLK_MASTER);
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+
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+ switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) {
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+ case SND_SOC_DAIFMT_CBS_CFS:
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+ conf |= JZ_AIC_CONF_BIT_CLK_MASTER | JZ_AIC_CONF_SYNC_CLK_MASTER;
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+ format |= JZ_AIC_I2S_FMT_ENABLE_SYS_CLK;
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+ break;
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+ case SND_SOC_DAIFMT_CBM_CFS:
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+ conf |= JZ_AIC_CONF_SYNC_CLK_MASTER;
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+ break;
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+ case SND_SOC_DAIFMT_CBS_CFM:
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+ conf |= JZ_AIC_CONF_BIT_CLK_MASTER;
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+ break;
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+ case SND_SOC_DAIFMT_CBM_CFM:
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+ break;
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+ default:
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+ return -EINVAL;
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+ }
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+
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+ switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
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+ case SND_SOC_DAIFMT_MSB:
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+ format |= JZ_AIC_I2S_FMT_MSB;
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+ break;
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+ case SND_SOC_DAIFMT_I2S:
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+ break;
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+ default:
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+ return -EINVAL;
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+ }
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+
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+ switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
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+ case SND_SOC_DAIFMT_NB_NF:
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+ break;
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+ default:
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+ return -EINVAL;
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+ }
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+
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+ jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
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+ jz4740_i2s_write(i2s, JZ_REG_AIC_I2S_FMT, format);
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+
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+ return 0;
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+}
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+
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+static int jz4740_i2s_hw_params(struct snd_pcm_substream *substream,
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+ struct snd_pcm_hw_params *params, struct snd_soc_dai *dai)
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+{
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+ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
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+ enum jz4740_dma_width dma_width;
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+ struct jz4740_pcm_config *pcm_config;
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+ unsigned int sample_size;
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+ uint32_t ctrl;
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+
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+ ctrl = jz4740_i2s_read(i2s, JZ_REG_AIC_CTRL);
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+
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+ switch (params_format(params)) {
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+ case SNDRV_PCM_FORMAT_S8:
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+ sample_size = 0;
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+ dma_width = JZ4740_DMA_WIDTH_8BIT;
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+ break;
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+ case SNDRV_PCM_FORMAT_S16:
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+ sample_size = 1;
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+ dma_width = JZ4740_DMA_WIDTH_16BIT;
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+ break;
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+ default:
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+ return -EINVAL;
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+ }
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+
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+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
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+ ctrl &= ~JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_MASK;
|
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+ ctrl |= sample_size << JZ_AIC_CTRL_OUTPUT_SAMPLE_SIZE_OFFSET;
|
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+ if (params_channels(params) == 1)
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+ ctrl |= JZ_AIC_CTRL_MONO_TO_STEREO;
|
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+ else
|
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+ ctrl &= ~JZ_AIC_CTRL_MONO_TO_STEREO;
|
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+
|
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+ pcm_config = &i2s->pcm_config_playback;
|
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+ pcm_config->dma_config.dst_width = dma_width;
|
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+
|
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+ } else {
|
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+ ctrl &= ~JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_MASK;
|
||
|
+ ctrl |= sample_size << JZ_AIC_CTRL_INPUT_SAMPLE_SIZE_OFFSET;
|
||
|
+
|
||
|
+ pcm_config = &i2s->pcm_config_capture;
|
||
|
+ pcm_config->dma_config.src_width = dma_width;
|
||
|
+ }
|
||
|
+
|
||
|
+ jz4740_i2s_write(i2s, JZ_REG_AIC_CTRL, ctrl);
|
||
|
+
|
||
|
+ snd_soc_dai_set_dma_data(dai, substream, pcm_config);
|
||
|
+
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static int jz4740_i2s_set_sysclk(struct snd_soc_dai *dai, int clk_id,
|
||
|
+ unsigned int freq, int dir)
|
||
|
+{
|
||
|
+ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
|
||
|
+ struct clk *parent;
|
||
|
+ int ret = 0;
|
||
|
+
|
||
|
+ switch (clk_id) {
|
||
|
+ case JZ4740_I2S_CLKSRC_EXT:
|
||
|
+ parent = clk_get(NULL, "ext");
|
||
|
+ clk_set_parent(i2s->clk_i2s, parent);
|
||
|
+ break;
|
||
|
+ case JZ4740_I2S_CLKSRC_PLL:
|
||
|
+ parent = clk_get(NULL, "pll half");
|
||
|
+ clk_set_parent(i2s->clk_i2s, parent);
|
||
|
+ ret = clk_set_rate(i2s->clk_i2s, freq);
|
||
|
+ break;
|
||
|
+ default:
|
||
|
+ return -EINVAL;
|
||
|
+ }
|
||
|
+ clk_put(parent);
|
||
|
+
|
||
|
+ return ret;
|
||
|
+}
|
||
|
+
|
||
|
+static int jz4740_i2s_suspend(struct snd_soc_dai *dai)
|
||
|
+{
|
||
|
+ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
|
||
|
+ uint32_t conf;
|
||
|
+
|
||
|
+ if (dai->active) {
|
||
|
+ conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
|
||
|
+ conf &= ~JZ_AIC_CONF_ENABLE;
|
||
|
+ jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
|
||
|
+
|
||
|
+ clk_disable(i2s->clk_i2s);
|
||
|
+ }
|
||
|
+
|
||
|
+ clk_disable(i2s->clk_aic);
|
||
|
+
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static int jz4740_i2s_resume(struct snd_soc_dai *dai)
|
||
|
+{
|
||
|
+ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
|
||
|
+ uint32_t conf;
|
||
|
+
|
||
|
+ clk_enable(i2s->clk_aic);
|
||
|
+
|
||
|
+ if (dai->active) {
|
||
|
+ clk_enable(i2s->clk_i2s);
|
||
|
+
|
||
|
+ conf = jz4740_i2s_read(i2s, JZ_REG_AIC_CONF);
|
||
|
+ conf |= JZ_AIC_CONF_ENABLE;
|
||
|
+ jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
|
||
|
+ }
|
||
|
+
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static int jz4740_i2s_probe(struct platform_device *pdev, struct snd_soc_dai *dai)
|
||
|
+{
|
||
|
+ struct jz4740_i2s *i2s = jz4740_dai_to_i2s(dai);
|
||
|
+ uint32_t conf;
|
||
|
+
|
||
|
+ conf = (7 << JZ_AIC_CONF_FIFO_RX_THRESHOLD_OFFSET) |
|
||
|
+ (8 << JZ_AIC_CONF_FIFO_TX_THRESHOLD_OFFSET) |
|
||
|
+ JZ_AIC_CONF_OVERFLOW_PLAY_LAST |
|
||
|
+ JZ_AIC_CONF_I2S |
|
||
|
+ JZ_AIC_CONF_INTERNAL_CODEC;
|
||
|
+
|
||
|
+ jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, JZ_AIC_CONF_RESET);
|
||
|
+ jz4740_i2s_write(i2s, JZ_REG_AIC_CONF, conf);
|
||
|
+
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static struct snd_soc_dai_ops jz4740_i2s_dai_ops = {
|
||
|
+ .startup = jz4740_i2s_startup,
|
||
|
+ .shutdown = jz4740_i2s_shutdown,
|
||
|
+ .trigger = jz4740_i2s_trigger,
|
||
|
+ .hw_params = jz4740_i2s_hw_params,
|
||
|
+ .set_fmt = jz4740_i2s_set_fmt,
|
||
|
+ .set_sysclk = jz4740_i2s_set_sysclk,
|
||
|
+};
|
||
|
+
|
||
|
+#define JZ4740_I2S_FMTS (SNDRV_PCM_FMTBIT_S8 | \
|
||
|
+ SNDRV_PCM_FMTBIT_S16_LE)
|
||
|
+
|
||
|
+struct snd_soc_dai jz4740_i2s_dai = {
|
||
|
+ .name = "jz4740-i2s",
|
||
|
+ .probe = jz4740_i2s_probe,
|
||
|
+ .playback = {
|
||
|
+ .channels_min = 1,
|
||
|
+ .channels_max = 2,
|
||
|
+ .rates = SNDRV_PCM_RATE_8000_48000,
|
||
|
+ .formats = JZ4740_I2S_FMTS,
|
||
|
+ },
|
||
|
+ .capture = {
|
||
|
+ .channels_min = 2,
|
||
|
+ .channels_max = 2,
|
||
|
+ .rates = SNDRV_PCM_RATE_8000_48000,
|
||
|
+ .formats = JZ4740_I2S_FMTS,
|
||
|
+ },
|
||
|
+ .symmetric_rates = 1,
|
||
|
+ .ops = &jz4740_i2s_dai_ops,
|
||
|
+ .suspend = jz4740_i2s_suspend,
|
||
|
+ .resume = jz4740_i2s_resume,
|
||
|
+};
|
||
|
+EXPORT_SYMBOL_GPL(jz4740_i2s_dai);
|
||
|
+
|
||
|
+static void __devinit jz4740_i2c_init_pcm_config(struct jz4740_i2s *i2s)
|
||
|
+{
|
||
|
+ struct jz4740_dma_config *dma_config;
|
||
|
+
|
||
|
+ /* Playback */
|
||
|
+ dma_config = &i2s->pcm_config_playback.dma_config;
|
||
|
+ dma_config->src_width = JZ4740_DMA_WIDTH_32BIT,
|
||
|
+ dma_config->transfer_size = JZ4740_DMA_TRANSFER_SIZE_16BYTE;
|
||
|
+ dma_config->request_type = JZ4740_DMA_TYPE_AIC_TRANSMIT;
|
||
|
+ dma_config->flags = JZ4740_DMA_SRC_AUTOINC;
|
||
|
+ dma_config->mode = JZ4740_DMA_MODE_SINGLE;
|
||
|
+ i2s->pcm_config_playback.fifo_addr = i2s->phys_base + JZ_REG_AIC_FIFO;
|
||
|
+
|
||
|
+ /* Capture */
|
||
|
+ dma_config = &i2s->pcm_config_capture.dma_config;
|
||
|
+ dma_config->dst_width = JZ4740_DMA_WIDTH_32BIT,
|
||
|
+ dma_config->transfer_size = JZ4740_DMA_TRANSFER_SIZE_16BYTE;
|
||
|
+ dma_config->request_type = JZ4740_DMA_TYPE_AIC_RECEIVE;
|
||
|
+ dma_config->flags = JZ4740_DMA_DST_AUTOINC;
|
||
|
+ dma_config->mode = JZ4740_DMA_MODE_SINGLE;
|
||
|
+ i2s->pcm_config_capture.fifo_addr = i2s->phys_base + JZ_REG_AIC_FIFO;
|
||
|
+}
|
||
|
+
|
||
|
+static int __devinit jz4740_i2s_dev_probe(struct platform_device *pdev)
|
||
|
+{
|
||
|
+ struct jz4740_i2s *i2s;
|
||
|
+ int ret;
|
||
|
+
|
||
|
+ i2s = kzalloc(sizeof(*i2s), GFP_KERNEL);
|
||
|
+
|
||
|
+ if (!i2s)
|
||
|
+ return -ENOMEM;
|
||
|
+
|
||
|
+ i2s->mem = platform_get_resource(pdev, IORESOURCE_MEM, 0);
|
||
|
+ if (!i2s->mem) {
|
||
|
+ ret = -ENOENT;
|
||
|
+ goto err_free;
|
||
|
+ }
|
||
|
+
|
||
|
+ i2s->mem = request_mem_region(i2s->mem->start, resource_size(i2s->mem),
|
||
|
+ pdev->name);
|
||
|
+ if (!i2s->mem) {
|
||
|
+ ret = -EBUSY;
|
||
|
+ goto err_free;
|
||
|
+ }
|
||
|
+
|
||
|
+ i2s->base = ioremap_nocache(i2s->mem->start, resource_size(i2s->mem));
|
||
|
+ if (!i2s->base) {
|
||
|
+ ret = -EBUSY;
|
||
|
+ goto err_release_mem_region;
|
||
|
+ }
|
||
|
+
|
||
|
+ i2s->phys_base = i2s->mem->start;
|
||
|
+
|
||
|
+ i2s->clk_aic = clk_get(&pdev->dev, "aic");
|
||
|
+ if (IS_ERR(i2s->clk_aic)) {
|
||
|
+ ret = PTR_ERR(i2s->clk_aic);
|
||
|
+ goto err_iounmap;
|
||
|
+ }
|
||
|
+
|
||
|
+ i2s->clk_i2s = clk_get(&pdev->dev, "i2s");
|
||
|
+ if (IS_ERR(i2s->clk_i2s)) {
|
||
|
+ ret = PTR_ERR(i2s->clk_i2s);
|
||
|
+ goto err_clk_put_aic;
|
||
|
+ }
|
||
|
+
|
||
|
+ clk_enable(i2s->clk_aic);
|
||
|
+
|
||
|
+ jz4740_i2c_init_pcm_config(i2s);
|
||
|
+
|
||
|
+ jz4740_i2s_dai.private_data = i2s;
|
||
|
+ ret = snd_soc_register_dai(&jz4740_i2s_dai);
|
||
|
+
|
||
|
+ if (ret) {
|
||
|
+ dev_err(&pdev->dev, "Failed to register DAI\n");
|
||
|
+ goto err_clk_put_i2s;
|
||
|
+ }
|
||
|
+
|
||
|
+ platform_set_drvdata(pdev, i2s);
|
||
|
+
|
||
|
+ return 0;
|
||
|
+
|
||
|
+err_clk_put_i2s:
|
||
|
+ clk_disable(i2s->clk_aic);
|
||
|
+ clk_put(i2s->clk_i2s);
|
||
|
+err_clk_put_aic:
|
||
|
+ clk_put(i2s->clk_aic);
|
||
|
+err_iounmap:
|
||
|
+ iounmap(i2s->base);
|
||
|
+err_release_mem_region:
|
||
|
+ release_mem_region(i2s->mem->start, resource_size(i2s->mem));
|
||
|
+err_free:
|
||
|
+ kfree(i2s);
|
||
|
+
|
||
|
+ return ret;
|
||
|
+}
|
||
|
+
|
||
|
+static int __devexit jz4740_i2s_dev_remove(struct platform_device *pdev)
|
||
|
+{
|
||
|
+ struct jz4740_i2s *i2s = platform_get_drvdata(pdev);
|
||
|
+
|
||
|
+ snd_soc_unregister_dai(&jz4740_i2s_dai);
|
||
|
+
|
||
|
+ clk_disable(i2s->clk_aic);
|
||
|
+ clk_put(i2s->clk_i2s);
|
||
|
+ clk_put(i2s->clk_aic);
|
||
|
+
|
||
|
+ iounmap(i2s->base);
|
||
|
+ release_mem_region(i2s->mem->start, resource_size(i2s->mem));
|
||
|
+
|
||
|
+ platform_set_drvdata(pdev, NULL);
|
||
|
+ kfree(i2s);
|
||
|
+
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static struct platform_driver jz4740_i2s_driver = {
|
||
|
+ .probe = jz4740_i2s_dev_probe,
|
||
|
+ .remove = __devexit_p(jz4740_i2s_dev_remove),
|
||
|
+ .driver = {
|
||
|
+ .name = "jz4740-i2s",
|
||
|
+ .owner = THIS_MODULE,
|
||
|
+ },
|
||
|
+};
|
||
|
+
|
||
|
+static int __init jz4740_i2s_init(void)
|
||
|
+{
|
||
|
+ return platform_driver_register(&jz4740_i2s_driver);
|
||
|
+}
|
||
|
+module_init(jz4740_i2s_init);
|
||
|
+
|
||
|
+static void __exit jz4740_i2s_exit(void)
|
||
|
+{
|
||
|
+ platform_driver_unregister(&jz4740_i2s_driver);
|
||
|
+}
|
||
|
+module_exit(jz4740_i2s_exit);
|
||
|
+
|
||
|
+MODULE_AUTHOR("Lars-Peter Clausen, <lars@metafoo.de>");
|
||
|
+MODULE_DESCRIPTION("Ingenic JZ4740 SoC I2S driver");
|
||
|
+MODULE_LICENSE("GPL");
|
||
|
+MODULE_ALIAS("platform:jz4740-i2s");
|
||
|
--- /dev/null
|
||
|
+++ b/sound/soc/jz4740/jz4740-i2s.h
|
||
|
@@ -0,0 +1,18 @@
|
||
|
+/*
|
||
|
+ * 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.
|
||
|
+ */
|
||
|
+
|
||
|
+#ifndef _JZ4740_I2S_H
|
||
|
+#define _JZ4740_I2S_H
|
||
|
+
|
||
|
+/* I2S clock source */
|
||
|
+#define JZ4740_I2S_CLKSRC_EXT 0
|
||
|
+#define JZ4740_I2S_CLKSRC_PLL 1
|
||
|
+
|
||
|
+#define JZ4740_I2S_BIT_CLK 0
|
||
|
+
|
||
|
+extern struct snd_soc_dai jz4740_i2s_dai;
|
||
|
+
|
||
|
+#endif
|
||
|
--- /dev/null
|
||
|
+++ b/sound/soc/jz4740/jz4740-pcm.c
|
||
|
@@ -0,0 +1,373 @@
|
||
|
+/*
|
||
|
+ * Copyright (C) 2010, Lars-Peter Clausen <lars@metafoo.de>
|
||
|
+ *
|
||
|
+ * This program is free software; you can redistribute it and/or modify it
|
||
|
+ * under the terms of the GNU General Public License as published by the
|
||
|
+ * Free Software Foundation; either version 2 of the License, or (at your
|
||
|
+ * option) any later version.
|
||
|
+ *
|
||
|
+ * You should have received a copy of the GNU General Public License along
|
||
|
+ * with this program; if not, write to the Free Software Foundation, Inc.,
|
||
|
+ * 675 Mass Ave, Cambridge, MA 02139, USA.
|
||
|
+ *
|
||
|
+ */
|
||
|
+
|
||
|
+#include <linux/init.h>
|
||
|
+#include <linux/interrupt.h>
|
||
|
+#include <linux/kernel.h>
|
||
|
+#include <linux/module.h>
|
||
|
+#include <linux/platform_device.h>
|
||
|
+#include <linux/slab.h>
|
||
|
+
|
||
|
+#include <linux/dma-mapping.h>
|
||
|
+
|
||
|
+#include <sound/core.h>
|
||
|
+#include <sound/pcm.h>
|
||
|
+#include <sound/pcm_params.h>
|
||
|
+#include <sound/soc.h>
|
||
|
+
|
||
|
+#include <asm/mach-jz4740/dma.h>
|
||
|
+#include "jz4740-pcm.h"
|
||
|
+
|
||
|
+struct jz4740_runtime_data {
|
||
|
+ unsigned long dma_period;
|
||
|
+ dma_addr_t dma_start;
|
||
|
+ dma_addr_t dma_pos;
|
||
|
+ dma_addr_t dma_end;
|
||
|
+
|
||
|
+ struct jz4740_dma_chan *dma;
|
||
|
+
|
||
|
+ dma_addr_t fifo_addr;
|
||
|
+};
|
||
|
+
|
||
|
+/* identify hardware playback capabilities */
|
||
|
+static const struct snd_pcm_hardware jz4740_pcm_hardware = {
|
||
|
+ .info = SNDRV_PCM_INFO_MMAP |
|
||
|
+ SNDRV_PCM_INFO_MMAP_VALID |
|
||
|
+ SNDRV_PCM_INFO_INTERLEAVED |
|
||
|
+ SNDRV_PCM_INFO_BLOCK_TRANSFER,
|
||
|
+ .formats = SNDRV_PCM_FMTBIT_S16_LE | SNDRV_PCM_FMTBIT_S8,
|
||
|
+
|
||
|
+ .rates = SNDRV_PCM_RATE_8000_48000,
|
||
|
+ .channels_min = 1,
|
||
|
+ .channels_max = 2,
|
||
|
+ .period_bytes_min = 16,
|
||
|
+ .period_bytes_max = 2 * PAGE_SIZE,
|
||
|
+ .periods_min = 2,
|
||
|
+ .periods_max = 128,
|
||
|
+ .buffer_bytes_max = 128 * 2 * PAGE_SIZE,
|
||
|
+ .fifo_size = 32,
|
||
|
+};
|
||
|
+
|
||
|
+static void jz4740_pcm_start_transfer(struct jz4740_runtime_data *prtd,
|
||
|
+ struct snd_pcm_substream *substream)
|
||
|
+{
|
||
|
+ unsigned long count;
|
||
|
+
|
||
|
+ if (prtd->dma_pos == prtd->dma_end)
|
||
|
+ prtd->dma_pos = prtd->dma_start;
|
||
|
+
|
||
|
+ if (prtd->dma_pos + prtd->dma_period > prtd->dma_end)
|
||
|
+ count = prtd->dma_end - prtd->dma_pos;
|
||
|
+ else
|
||
|
+ count = prtd->dma_period;
|
||
|
+
|
||
|
+ jz4740_dma_disable(prtd->dma);
|
||
|
+
|
||
|
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) {
|
||
|
+ jz4740_dma_set_src_addr(prtd->dma, prtd->dma_pos);
|
||
|
+ jz4740_dma_set_dst_addr(prtd->dma, prtd->fifo_addr);
|
||
|
+ } else {
|
||
|
+ jz4740_dma_set_src_addr(prtd->dma, prtd->fifo_addr);
|
||
|
+ jz4740_dma_set_dst_addr(prtd->dma, prtd->dma_pos);
|
||
|
+ }
|
||
|
+
|
||
|
+ jz4740_dma_set_transfer_count(prtd->dma, count);
|
||
|
+
|
||
|
+ prtd->dma_pos += count;
|
||
|
+
|
||
|
+ jz4740_dma_enable(prtd->dma);
|
||
|
+}
|
||
|
+
|
||
|
+static void jz4740_pcm_dma_transfer_done(struct jz4740_dma_chan *dma, int err,
|
||
|
+ void *dev_id)
|
||
|
+{
|
||
|
+ struct snd_pcm_substream *substream = dev_id;
|
||
|
+ struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
+ struct jz4740_runtime_data *prtd = runtime->private_data;
|
||
|
+
|
||
|
+ snd_pcm_period_elapsed(substream);
|
||
|
+
|
||
|
+ jz4740_pcm_start_transfer(prtd, substream);
|
||
|
+}
|
||
|
+
|
||
|
+static int jz4740_pcm_hw_params(struct snd_pcm_substream *substream,
|
||
|
+ struct snd_pcm_hw_params *params)
|
||
|
+{
|
||
|
+ struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
+ struct jz4740_runtime_data *prtd = runtime->private_data;
|
||
|
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
|
||
|
+ struct jz4740_pcm_config *config;
|
||
|
+
|
||
|
+ config = snd_soc_dai_get_dma_data(rtd->dai->cpu_dai, substream);
|
||
|
+
|
||
|
+ if (!config)
|
||
|
+ return 0;
|
||
|
+
|
||
|
+ if (!prtd->dma) {
|
||
|
+ if (substream->stream == SNDRV_PCM_STREAM_CAPTURE)
|
||
|
+ prtd->dma = jz4740_dma_request(substream, "PCM Capture");
|
||
|
+ else
|
||
|
+ prtd->dma = jz4740_dma_request(substream, "PCM Playback");
|
||
|
+ }
|
||
|
+
|
||
|
+ if (!prtd->dma)
|
||
|
+ return -EBUSY;
|
||
|
+
|
||
|
+ jz4740_dma_configure(prtd->dma, &config->dma_config);
|
||
|
+ prtd->fifo_addr = config->fifo_addr;
|
||
|
+
|
||
|
+ jz4740_dma_set_complete_cb(prtd->dma, jz4740_pcm_dma_transfer_done);
|
||
|
+
|
||
|
+ snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer);
|
||
|
+ runtime->dma_bytes = params_buffer_bytes(params);
|
||
|
+
|
||
|
+ prtd->dma_period = params_period_bytes(params);
|
||
|
+ prtd->dma_start = runtime->dma_addr;
|
||
|
+ prtd->dma_pos = prtd->dma_start;
|
||
|
+ prtd->dma_end = prtd->dma_start + runtime->dma_bytes;
|
||
|
+
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static int jz4740_pcm_hw_free(struct snd_pcm_substream *substream)
|
||
|
+{
|
||
|
+ struct jz4740_runtime_data *prtd = substream->runtime->private_data;
|
||
|
+
|
||
|
+ snd_pcm_set_runtime_buffer(substream, NULL);
|
||
|
+ if (prtd->dma) {
|
||
|
+ jz4740_dma_free(prtd->dma);
|
||
|
+ prtd->dma = NULL;
|
||
|
+ }
|
||
|
+
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static int jz4740_pcm_prepare(struct snd_pcm_substream *substream)
|
||
|
+{
|
||
|
+ struct jz4740_runtime_data *prtd = substream->runtime->private_data;
|
||
|
+
|
||
|
+ if (!prtd->dma)
|
||
|
+ return -EBUSY;
|
||
|
+
|
||
|
+ prtd->dma_pos = prtd->dma_start;
|
||
|
+
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static int jz4740_pcm_trigger(struct snd_pcm_substream *substream, int cmd)
|
||
|
+{
|
||
|
+ struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
+ struct jz4740_runtime_data *prtd = runtime->private_data;
|
||
|
+
|
||
|
+ switch (cmd) {
|
||
|
+ case SNDRV_PCM_TRIGGER_START:
|
||
|
+ case SNDRV_PCM_TRIGGER_RESUME:
|
||
|
+ case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
|
||
|
+ jz4740_pcm_start_transfer(prtd, substream);
|
||
|
+ break;
|
||
|
+ case SNDRV_PCM_TRIGGER_STOP:
|
||
|
+ case SNDRV_PCM_TRIGGER_SUSPEND:
|
||
|
+ case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
|
||
|
+ jz4740_dma_disable(prtd->dma);
|
||
|
+ break;
|
||
|
+ default:
|
||
|
+ break;
|
||
|
+ }
|
||
|
+
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static snd_pcm_uframes_t jz4740_pcm_pointer(struct snd_pcm_substream *substream)
|
||
|
+{
|
||
|
+ struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
+ struct jz4740_runtime_data *prtd = runtime->private_data;
|
||
|
+ unsigned long byte_offset;
|
||
|
+ snd_pcm_uframes_t offset;
|
||
|
+ struct jz4740_dma_chan *dma = prtd->dma;
|
||
|
+
|
||
|
+ /* prtd->dma_pos points to the end of the current transfer. So by
|
||
|
+ * subtracting prdt->dma_start we get the offset to the end of the
|
||
|
+ * current period in bytes. By subtracting the residue of the transfer
|
||
|
+ * we get the current offset in bytes. */
|
||
|
+ byte_offset = prtd->dma_pos - prtd->dma_start;
|
||
|
+ byte_offset -= jz4740_dma_get_residue(dma);
|
||
|
+
|
||
|
+ offset = bytes_to_frames(runtime, byte_offset);
|
||
|
+ if (offset >= runtime->buffer_size)
|
||
|
+ offset = 0;
|
||
|
+
|
||
|
+ return offset;
|
||
|
+}
|
||
|
+
|
||
|
+static int jz4740_pcm_open(struct snd_pcm_substream *substream)
|
||
|
+{
|
||
|
+ struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
+ struct jz4740_runtime_data *prtd;
|
||
|
+
|
||
|
+ prtd = kzalloc(sizeof(*prtd), GFP_KERNEL);
|
||
|
+ if (prtd == NULL)
|
||
|
+ return -ENOMEM;
|
||
|
+
|
||
|
+ snd_soc_set_runtime_hwparams(substream, &jz4740_pcm_hardware);
|
||
|
+
|
||
|
+ runtime->private_data = prtd;
|
||
|
+
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static int jz4740_pcm_close(struct snd_pcm_substream *substream)
|
||
|
+{
|
||
|
+ struct snd_pcm_runtime *runtime = substream->runtime;
|
||
|
+ struct jz4740_runtime_data *prtd = runtime->private_data;
|
||
|
+
|
||
|
+ kfree(prtd);
|
||
|
+
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static int jz4740_pcm_mmap(struct snd_pcm_substream *substream,
|
||
|
+ struct vm_area_struct *vma)
|
||
|
+{
|
||
|
+ return remap_pfn_range(vma, vma->vm_start,
|
||
|
+ substream->dma_buffer.addr >> PAGE_SHIFT,
|
||
|
+ vma->vm_end - vma->vm_start, vma->vm_page_prot);
|
||
|
+}
|
||
|
+
|
||
|
+static struct snd_pcm_ops jz4740_pcm_ops = {
|
||
|
+ .open = jz4740_pcm_open,
|
||
|
+ .close = jz4740_pcm_close,
|
||
|
+ .ioctl = snd_pcm_lib_ioctl,
|
||
|
+ .hw_params = jz4740_pcm_hw_params,
|
||
|
+ .hw_free = jz4740_pcm_hw_free,
|
||
|
+ .prepare = jz4740_pcm_prepare,
|
||
|
+ .trigger = jz4740_pcm_trigger,
|
||
|
+ .pointer = jz4740_pcm_pointer,
|
||
|
+ .mmap = jz4740_pcm_mmap,
|
||
|
+};
|
||
|
+
|
||
|
+static int jz4740_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream)
|
||
|
+{
|
||
|
+ struct snd_pcm_substream *substream = pcm->streams[stream].substream;
|
||
|
+ struct snd_dma_buffer *buf = &substream->dma_buffer;
|
||
|
+ size_t size = jz4740_pcm_hardware.buffer_bytes_max;
|
||
|
+
|
||
|
+ buf->dev.type = SNDRV_DMA_TYPE_DEV;
|
||
|
+ buf->dev.dev = pcm->card->dev;
|
||
|
+ buf->private_data = NULL;
|
||
|
+
|
||
|
+ buf->area = dma_alloc_noncoherent(pcm->card->dev, size,
|
||
|
+ &buf->addr, GFP_KERNEL);
|
||
|
+ if (!buf->area)
|
||
|
+ return -ENOMEM;
|
||
|
+
|
||
|
+ buf->bytes = size;
|
||
|
+
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static void jz4740_pcm_free(struct snd_pcm *pcm)
|
||
|
+{
|
||
|
+ struct snd_pcm_substream *substream;
|
||
|
+ struct snd_dma_buffer *buf;
|
||
|
+ int stream;
|
||
|
+
|
||
|
+ for (stream = 0; stream < SNDRV_PCM_STREAM_LAST; ++stream) {
|
||
|
+ substream = pcm->streams[stream].substream;
|
||
|
+ if (!substream)
|
||
|
+ continue;
|
||
|
+
|
||
|
+ buf = &substream->dma_buffer;
|
||
|
+ if (!buf->area)
|
||
|
+ continue;
|
||
|
+
|
||
|
+ dma_free_noncoherent(pcm->card->dev, buf->bytes, buf->area,
|
||
|
+ buf->addr);
|
||
|
+ buf->area = NULL;
|
||
|
+ }
|
||
|
+}
|
||
|
+
|
||
|
+static u64 jz4740_pcm_dmamask = DMA_BIT_MASK(32);
|
||
|
+
|
||
|
+int jz4740_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
|
||
|
+ struct snd_pcm *pcm)
|
||
|
+{
|
||
|
+ int ret = 0;
|
||
|
+
|
||
|
+ if (!card->dev->dma_mask)
|
||
|
+ card->dev->dma_mask = &jz4740_pcm_dmamask;
|
||
|
+
|
||
|
+ if (!card->dev->coherent_dma_mask)
|
||
|
+ card->dev->coherent_dma_mask = DMA_BIT_MASK(32);
|
||
|
+
|
||
|
+ if (dai->playback.channels_min) {
|
||
|
+ ret = jz4740_pcm_preallocate_dma_buffer(pcm,
|
||
|
+ SNDRV_PCM_STREAM_PLAYBACK);
|
||
|
+ if (ret)
|
||
|
+ goto err;
|
||
|
+ }
|
||
|
+
|
||
|
+ if (dai->capture.channels_min) {
|
||
|
+ ret = jz4740_pcm_preallocate_dma_buffer(pcm,
|
||
|
+ SNDRV_PCM_STREAM_CAPTURE);
|
||
|
+ if (ret)
|
||
|
+ goto err;
|
||
|
+ }
|
||
|
+
|
||
|
+err:
|
||
|
+ return ret;
|
||
|
+}
|
||
|
+
|
||
|
+struct snd_soc_platform jz4740_soc_platform = {
|
||
|
+ .name = "jz4740-pcm",
|
||
|
+ .pcm_ops = &jz4740_pcm_ops,
|
||
|
+ .pcm_new = jz4740_pcm_new,
|
||
|
+ .pcm_free = jz4740_pcm_free,
|
||
|
+};
|
||
|
+EXPORT_SYMBOL_GPL(jz4740_soc_platform);
|
||
|
+
|
||
|
+static int __devinit jz4740_pcm_probe(struct platform_device *pdev)
|
||
|
+{
|
||
|
+ return snd_soc_register_platform(&jz4740_soc_platform);
|
||
|
+}
|
||
|
+
|
||
|
+static int __devexit jz4740_pcm_remove(struct platform_device *pdev)
|
||
|
+{
|
||
|
+ snd_soc_unregister_platform(&jz4740_soc_platform);
|
||
|
+ return 0;
|
||
|
+}
|
||
|
+
|
||
|
+static struct platform_driver jz4740_pcm_driver = {
|
||
|
+ .probe = jz4740_pcm_probe,
|
||
|
+ .remove = __devexit_p(jz4740_pcm_remove),
|
||
|
+ .driver = {
|
||
|
+ .name = "jz4740-pcm",
|
||
|
+ .owner = THIS_MODULE,
|
||
|
+ },
|
||
|
+};
|
||
|
+
|
||
|
+static int __init jz4740_soc_platform_init(void)
|
||
|
+{
|
||
|
+ return platform_driver_register(&jz4740_pcm_driver);
|
||
|
+}
|
||
|
+module_init(jz4740_soc_platform_init);
|
||
|
+
|
||
|
+static void __exit jz4740_soc_platform_exit(void)
|
||
|
+{
|
||
|
+ return platform_driver_unregister(&jz4740_pcm_driver);
|
||
|
+}
|
||
|
+module_exit(jz4740_soc_platform_exit);
|
||
|
+
|
||
|
+MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
|
||
|
+MODULE_DESCRIPTION("Ingenic SoC JZ4740 PCM driver");
|
||
|
+MODULE_LICENSE("GPL");
|
||
|
--- /dev/null
|
||
|
+++ b/sound/soc/jz4740/jz4740-pcm.h
|
||
|
@@ -0,0 +1,22 @@
|
||
|
+/*
|
||
|
+ *
|
||
|
+ * 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.
|
||
|
+ */
|
||
|
+
|
||
|
+#ifndef _JZ4740_PCM_H
|
||
|
+#define _JZ4740_PCM_H
|
||
|
+
|
||
|
+#include <linux/dma-mapping.h>
|
||
|
+#include <asm/mach-jz4740/dma.h>
|
||
|
+
|
||
|
+/* platform data */
|
||
|
+extern struct snd_soc_platform jz4740_soc_platform;
|
||
|
+
|
||
|
+struct jz4740_pcm_config {
|
||
|
+ struct jz4740_dma_config dma_config;
|
||
|
+ phys_addr_t fifo_addr;
|
||
|
+};
|
||
|
+
|
||
|
+#endif
|