From: Davide Bonfanti <davide.bonfanti@xxxxxxxxxx>
The driver uses the pcm implementation without the use of DMA in
order to support Voicecodec (cq93vc).
Signed-off-by: Davide Bonfanti <davide.bonfanti@xxxxxxxxxx>
Signed-off-by: Raffaele Recalcati <raffaele.recalcati@xxxxxxxxxx>
---
sound/soc/davinci/Makefile | 3 +
sound/soc/davinci/cq93vc_copy.c | 130 +++++++++++++++++++++++++++++++++++++++
sound/soc/davinci/cq93vc_copy.h | 26 ++++++++
3 files changed, 159 insertions(+), 0 deletions(-)
create mode 100644 sound/soc/davinci/cq93vc_copy.c
create mode 100644 sound/soc/davinci/cq93vc_copy.h
diff --git a/sound/soc/davinci/Makefile b/sound/soc/davinci/Makefile
index 7d6a9a1..44c17ad 100644
--- a/sound/soc/davinci/Makefile
+++ b/sound/soc/davinci/Makefile
@@ -1,6 +1,7 @@
# DAVINCI Platform Support
snd-soc-davinci-objs := davinci-pcm.o
snd-soc-davinci-objs += davinci-pcm-copyfromuser.o
+snd-soc-davinci-objs += cq93vc_copy.o
snd-soc-davinci-i2s-objs := davinci-i2s.o
snd-soc-davinci-mcasp-objs:= davinci-mcasp.o
snd-soc-davinci-vcif-objs:= davinci-vcif.o
@@ -13,9 +14,11 @@ obj-$(CONFIG_SND_DAVINCI_SOC_VCIF) += snd-soc-davinci-vcif.o
# DAVINCI Machine Support
snd-soc-evm-objs := davinci-evm.o
snd-soc-sffsdr-objs := davinci-sffsdr.o
+snd-soc-bmx-objs := davinci-bmx.o
obj-$(CONFIG_SND_DAVINCI_SOC_EVM) += snd-soc-evm.o
obj-$(CONFIG_SND_DM6467_SOC_EVM) += snd-soc-evm.o
obj-$(CONFIG_SND_DA830_SOC_EVM) += snd-soc-evm.o
obj-$(CONFIG_SND_DA850_SOC_EVM) += snd-soc-evm.o
obj-$(CONFIG_SND_DAVINCI_SOC_SFFSDR) += snd-soc-sffsdr.o
+obj-$(CONFIG_SND_DAVINCI_SOC_BMX) += snd-soc-bmx.o
diff --git a/sound/soc/davinci/cq93vc_copy.c b/sound/soc/davinci/cq93vc_copy.c
new file mode 100644
index 0000000..41747dd
--- /dev/null
+++ b/sound/soc/davinci/cq93vc_copy.c
@@ -0,0 +1,130 @@
+/*
+ *
+ * Copyright (C) 2010 Bticino S.p.a
+ * Author: Davide Bonfanti <davide.bonfanti@xxxxxxxxxx>
+ *
+ * Contributors:
+ * Raffaele Recalcati <raffaele.recalcati@xxxxxxxxxx>
+ *
+ * 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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; 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/init.h>
+#include <linux/platform_device.h>
+#include <linux/slab.h>
+#include <linux/kernel.h>
+#include <linux/hrtimer.h>
+#include <linux/clk.h>
+
+#include <sound/core.h>
+#include <sound/pcm.h>
+#include <sound/pcm_params.h>
+#include <sound/soc.h>
+
+#include <mach/gpio.h>
+
+#include "davinci-pcm-copy.h"
+#include "cq93vc_copy.h"
+
+#define DAVINCI_VOICECODEC_MODULE_BASE 0x01D0C000
+#define VC_PID 0x00
+#define VC_CTRL 0x04
+#define VC_INTEN 0x08
+#define VC_INTSTATUS 0x0C
+#define VC_INTCLR 0x10
+#define VC_EMUL_CTRL 0x14
+#define RFIFO 0x20
+#define WFIFO 0x24
+#define FIFOSTAT 0x28
+#define VC_REG00 0x80
+#define VC_REG01 0x84
+#define VC_REG02 0x88
+#define VC_REG03 0x8C
+#define VC_REG04 0x90
+#define VC_REG05 0x94
+#define VC_REG06 0x98
+#define VC_REG09 0xA4
+#define VC_REG10 0xA8
+#define VC_REG12 0xB0
+
+/* bit definitions */
+#define VC_CTRL_WFIFOMD BIT(14)
+#define VC_CTRL_WFIFOCL BIT(13)
+#define VC_CTRL_WFIFOEN BIT(12)
+#define VC_CTRL_RFIFOMD BIT(10)
+#define VC_CTRL_RFIFOCL BIT(9)
+#define VC_CTRL_RFIFOEN BIT(8)
+#define VC_CTRL_WDUNSIGNED BIT(7)
+#define VC_CTRL_WDSIZE BIT(6)
+#define VC_CTRL_RDUNSIGNED BIT(5)
+#define VC_CTRL_RDSIZE BIT(4)
+#define VC_CTRL_RSTDAC BIT(1)
+#define VC_CTRL_RSTADC BIT(0)
+
+#define VC_INTSTATUS_WDREQ BIT(3)
+
+#define FIFOSTAT_WDATACOUNT_MASK 0x1F00
+#define FIFOSTAT_WDATACOUNT_OFFSET 8
+
+#define HW_FIFO_SIZE 0x10
+
+void __iomem *voice_codec_base;
+
+void cq93vc_enable(void)
+{
+ __raw_writel(0, voice_codec_base + VC_CTRL);
+ __raw_writel(0, voice_codec_base + VC_INTEN);
+ __raw_writel(VC_CTRL_RFIFOMD | VC_CTRL_WFIFOEN |
+ VC_CTRL_WFIFOMD, voice_codec_base + VC_CTRL);
+}
+
+void cq93vc_write(u16 data)
+{
+ __raw_writew(data, voice_codec_base + WFIFO);
+}
+
+void cq93vc_wait_fifo_ready(void)
+{
+ u32 diff;
+ do {
+ diff = __raw_readl(voice_codec_base + VC_INTSTATUS);
+ } while (!(diff & VC_INTSTATUS_WDREQ));
+}
+
+int cq93vc_get_fifo_size(void)
+{
+ return HW_FIFO_SIZE;
+}
+
+int cq93vc_get_fifo_status(void)
+{
+ int fifo;
+ fifo = __raw_readl(voice_codec_base + FIFOSTAT);
+ fifo = (fifo & FIFOSTAT_WDATACOUNT_MASK) >> FIFOSTAT_WDATACOUNT_OFFSET;
+ return fifo;
+}
+
+void cq93vc_init(void)
+{
+ voice_codec_base = ioremap(DAVINCI_VOICECODEC_MODULE_BASE, SZ_4K);
+
+}
+
+struct davinci_pcm_copy_ops cq93vc_pcm_copy_ops = {
+ .enable = cq93vc_enable,
+ .write = cq93vc_write,
+ .wait_fifo_ready = cq93vc_wait_fifo_ready,
+ .get_fifo_size = cq93vc_get_fifo_size,
+ .get_fifo_status = cq93vc_get_fifo_status,
+ .init = cq93vc_init,
+};
+EXPORT_SYMBOL_GPL(cq93vc_pcm_copy_ops);
diff --git a/sound/soc/davinci/cq93vc_copy.h b/sound/soc/davinci/cq93vc_copy.h
new file mode 100644
index 0000000..bcc4458
--- /dev/null
+++ b/sound/soc/davinci/cq93vc_copy.h
@@ -0,0 +1,26 @@
+/*
+ *
+ * Copyright (C) 2010 Bticino S.p.a
+ * Author: Davide Bonfanti <davide.bonfanti@xxxxxxxxxx>
+ *
+ * Contributors:
+ * Raffaele Recalcati <raffaele.recalcati@xxxxxxxxxx>
+ *
+ * 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 version 2.
+ *
+ * This program is distributed "as is" WITHOUT ANY WARRANTY of any
+ * kind, whether express or implied; without even the implied warranty
+ * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ */
+
+#ifndef _DAVINCI_CQ93VC_COPY_H
+#define _DAVINCI_CQ93VC_COPY_H
+#include "davinci-pcm-copy.h"
+
+extern struct davinci_pcm_copy_ops cq93vc_pcm_copy_ops;
+
+#endif /* _DAVINCI_CQ93VC_COPY_H */
--
1.7.0.4
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