From: Davide Bonfanti davide.bonfanti@bticino.it
The driver uses the pcm implementation without the use of DMA in order to support Voicecodec (cq93vc).
Signed-off-by: Davide Bonfanti davide.bonfanti@bticino.it Signed-off-by: Raffaele Recalcati raffaele.recalcati@bticino.it --- 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@bticino.it + * + * Contributors: + * Raffaele Recalcati raffaele.recalcati@bticino.it + * + * 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@bticino.it + * + * Contributors: + * Raffaele Recalcati raffaele.recalcati@bticino.it + * + * 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 */