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MFD: DaVinci Voice Codec 

This is the MFD driver for the DaVinci Voice codec, it has two clients:

* Voice codec interface
* Voice codec CQ93VC

Signed-off-by: Miguel Aguilar <miguel.aguilar@ridgerun.com>
Acked-by: Samuel Ortiz <sameo@linux.intel.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Miguel Aguilar 2010-03-11 09:32:21 -06:00 committed by Mark Brown
parent d9ad6296ec
commit ca26308c22
4 changed files with 320 additions and 0 deletions
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4
drivers/mfd/Kconfig
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@ -53,6 +53,10 @@ config MFD_SH_MOBILE_SDHI
This driver supports the SDHI hardware block found in many
SuperH Mobile SoCs.
config MFD_DAVINCI_VOICECODEC
tristate
select MFD_CORE
config MFD_DM355EVM_MSP
bool "DaVinci DM355 EVM microcontroller"
depends on I2C && MACH_DAVINCI_DM355_EVM

1
drivers/mfd/Makefile
View File

@ -12,6 +12,7 @@ obj-$(CONFIG_HTC_EGPIO) += htc-egpio.o
obj-$(CONFIG_HTC_PASIC3) += htc-pasic3.o
obj-$(CONFIG_HTC_I2CPLD) += htc-i2cpld.o
obj-$(CONFIG_MFD_DAVINCI_VOICECODEC) += davinci_voicecodec.o
obj-$(CONFIG_MFD_DM355EVM_MSP) += dm355evm_msp.o
obj-$(CONFIG_MFD_T7L66XB) += t7l66xb.o tmio_core.o

189
drivers/mfd/davinci_voicecodec.c Normal file
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@ -0,0 +1,189 @@
/*
* DaVinci Voice Codec Core Interface for TI platforms
*
* Copyright (C) 2010 Texas Instruments, Inc
*
* Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
*
* 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.
*
* 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.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <sound/pcm.h>
#include <linux/mfd/davinci_voicecodec.h>
u32 davinci_vc_read(struct davinci_vc *davinci_vc, int reg)
{
return __raw_readl(davinci_vc->base + reg);
}
void davinci_vc_write(struct davinci_vc *davinci_vc,
int reg, u32 val)
{
__raw_writel(val, davinci_vc->base + reg);
}
static int __init davinci_vc_probe(struct platform_device *pdev)
{
struct davinci_vc *davinci_vc;
struct resource *res, *mem;
struct mfd_cell *cell = NULL;
int ret;
davinci_vc = kzalloc(sizeof(struct davinci_vc), GFP_KERNEL);
if (!davinci_vc) {
dev_dbg(&pdev->dev,
"could not allocate memory for private data\n");
return -ENOMEM;
}
davinci_vc->clk = clk_get(&pdev->dev, NULL);
if (IS_ERR(davinci_vc->clk)) {
dev_dbg(&pdev->dev,
"could not get the clock for voice codec\n");
ret = -ENODEV;
goto fail1;
}
clk_enable(davinci_vc->clk);
res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
if (!res) {
dev_err(&pdev->dev, "no mem resource\n");
ret = -ENODEV;
goto fail2;
}
davinci_vc->pbase = res->start;
davinci_vc->base_size = resource_size(res);
mem = request_mem_region(davinci_vc->pbase, davinci_vc->base_size,
pdev->name);
if (!mem) {
dev_err(&pdev->dev, "VCIF region already claimed\n");
ret = -EBUSY;
goto fail2;
}
davinci_vc->base = ioremap(davinci_vc->pbase, davinci_vc->base_size);
if (!davinci_vc->base) {
dev_err(&pdev->dev, "can't ioremap mem resource.\n");
ret = -ENOMEM;
goto fail3;
}
res = platform_get_resource(pdev, IORESOURCE_DMA, 0);
if (!res) {
dev_err(&pdev->dev, "no DMA resource\n");
return -ENXIO;
}
davinci_vc->davinci_vcif.dma_tx_channel = res->start;
davinci_vc->davinci_vcif.dma_tx_addr =
(dma_addr_t)(io_v2p(davinci_vc->base) + DAVINCI_VC_WFIFO);
res = platform_get_resource(pdev, IORESOURCE_DMA, 1);
if (!res) {
dev_err(&pdev->dev, "no DMA resource\n");
return -ENXIO;
}
davinci_vc->davinci_vcif.dma_rx_channel = res->start;
davinci_vc->davinci_vcif.dma_rx_addr =
(dma_addr_t)(io_v2p(davinci_vc->base) + DAVINCI_VC_RFIFO);
davinci_vc->dev = &pdev->dev;
davinci_vc->pdev = pdev;
/* Voice codec interface client */
cell = &davinci_vc->cells[DAVINCI_VC_VCIF_CELL];
cell->name = "davinci_vcif";
cell->driver_data = davinci_vc;
/* Voice codec CQ93VC client */
cell = &davinci_vc->cells[DAVINCI_VC_CQ93VC_CELL];
cell->name = "cq93vc";
cell->driver_data = davinci_vc;
ret = mfd_add_devices(&pdev->dev, pdev->id, davinci_vc->cells,
DAVINCI_VC_CELLS, NULL, 0);
if (ret != 0) {
dev_err(&pdev->dev, "fail to register client devices\n");
goto fail4;
}
return 0;
fail4:
iounmap(davinci_vc->base);
fail3:
release_mem_region(davinci_vc->pbase, davinci_vc->base_size);
fail2:
clk_disable(davinci_vc->clk);
clk_put(davinci_vc->clk);
davinci_vc->clk = NULL;
fail1:
kfree(davinci_vc);
return ret;
}
static int __devexit davinci_vc_remove(struct platform_device *pdev)
{
struct davinci_vc *davinci_vc = platform_get_drvdata(pdev);
mfd_remove_devices(&pdev->dev);
iounmap(davinci_vc->base);
release_mem_region(davinci_vc->pbase, davinci_vc->base_size);
clk_disable(davinci_vc->clk);
clk_put(davinci_vc->clk);
davinci_vc->clk = NULL;
kfree(davinci_vc);
return 0;
}
static struct platform_driver davinci_vc_driver = {
.driver = {
.name = "davinci_voicecodec",
.owner = THIS_MODULE,
},
.remove = __devexit_p(davinci_vc_remove),
};
static int __init davinci_vc_init(void)
{
return platform_driver_probe(&davinci_vc_driver, davinci_vc_probe);
}
module_init(davinci_vc_init);
static void __exit davinci_vc_exit(void)
{
platform_driver_unregister(&davinci_vc_driver);
}
module_exit(davinci_vc_exit);
MODULE_AUTHOR("Miguel Aguilar");
MODULE_DESCRIPTION("Texas Instruments DaVinci Voice Codec Core Interface");
MODULE_LICENSE("GPL");

126
include/linux/mfd/davinci_voicecodec.h Normal file
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@ -0,0 +1,126 @@
/*
* DaVinci Voice Codec Core Interface for TI platforms
*
* Copyright (C) 2010 Texas Instruments, Inc
*
* Author: Miguel Aguilar <miguel.aguilar@ridgerun.com>
*
* 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.
*
* 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.
*
* 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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#ifndef __LINUX_MFD_DAVINCI_VOICECODEC_H_
#define __LINUX_MFD_DAVINIC_VOICECODEC_H_
#include <linux/kernel.h>
#include <linux/platform_device.h>
#include <linux/mfd/core.h>
#include <mach/edma.h>
/*
* Register values.
*/
#define DAVINCI_VC_PID 0x00
#define DAVINCI_VC_CTRL 0x04
#define DAVINCI_VC_INTEN 0x08
#define DAVINCI_VC_INTSTATUS 0x0c
#define DAVINCI_VC_INTCLR 0x10
#define DAVINCI_VC_EMUL_CTRL 0x14
#define DAVINCI_VC_RFIFO 0x20
#define DAVINCI_VC_WFIFO 0x24
#define DAVINCI_VC_FIFOSTAT 0x28
#define DAVINCI_VC_TST_CTRL 0x2C
#define DAVINCI_VC_REG05 0x94
#define DAVINCI_VC_REG09 0xA4
#define DAVINCI_VC_REG12 0xB0
/* DAVINCI_VC_CTRL bit fields */
#define DAVINCI_VC_CTRL_MASK 0x5500
#define DAVINCI_VC_CTRL_RSTADC BIT(0)
#define DAVINCI_VC_CTRL_RSTDAC BIT(1)
#define DAVINCI_VC_CTRL_RD_BITS_8 BIT(4)
#define DAVINCI_VC_CTRL_RD_UNSIGNED BIT(5)
#define DAVINCI_VC_CTRL_WD_BITS_8 BIT(6)
#define DAVINCI_VC_CTRL_WD_UNSIGNED BIT(7)
#define DAVINCI_VC_CTRL_RFIFOEN BIT(8)
#define DAVINCI_VC_CTRL_RFIFOCL BIT(9)
#define DAVINCI_VC_CTRL_RFIFOMD_WORD_1 BIT(10)
#define DAVINCI_VC_CTRL_WFIFOEN BIT(12)
#define DAVINCI_VC_CTRL_WFIFOCL BIT(13)
#define DAVINCI_VC_CTRL_WFIFOMD_WORD_1 BIT(14)
/* DAVINCI_VC_INT bit fields */
#define DAVINCI_VC_INT_MASK 0x3F
#define DAVINCI_VC_INT_RDRDY_MASK BIT(0)
#define DAVINCI_VC_INT_RERROVF_MASK BIT(1)
#define DAVINCI_VC_INT_RERRUDR_MASK BIT(2)
#define DAVINCI_VC_INT_WDREQ_MASK BIT(3)
#define DAVINCI_VC_INT_WERROVF_MASKBIT BIT(4)
#define DAVINCI_VC_INT_WERRUDR_MASK BIT(5)
/* DAVINCI_VC_REG05 bit fields */
#define DAVINCI_VC_REG05_PGA_GAIN 0x07
/* DAVINCI_VC_REG09 bit fields */
#define DAVINCI_VC_REG09_MUTE 0x40
#define DAVINCI_VC_REG09_DIG_ATTEN 0x3F
/* DAVINCI_VC_REG12 bit fields */
#define DAVINCI_VC_REG12_POWER_ALL_ON 0xFD
#define DAVINCI_VC_REG12_POWER_ALL_OFF 0x00
#define DAVINCI_VC_CELLS 2
enum davinci_vc_cells {
DAVINCI_VC_VCIF_CELL,
DAVINCI_VC_CQ93VC_CELL,
};
struct davinci_vcif {
struct platform_device *pdev;
u32 dma_tx_channel;
u32 dma_rx_channel;
dma_addr_t dma_tx_addr;
dma_addr_t dma_rx_addr;
};
struct cq93vc {
struct platform_device *pdev;
struct snd_soc_codec *codec;
u32 sysclk;
};
struct davinci_vc;
struct davinci_vc {
/* Device data */
struct device *dev;
struct platform_device *pdev;
struct clk *clk;
/* Memory resources */
void __iomem *base;
resource_size_t pbase;
size_t base_size;
/* MFD cells */
struct mfd_cell cells[DAVINCI_VC_CELLS];
/* Client devices */
struct davinci_vcif davinci_vcif;
struct cq93vc cq93vc;
};
#endif