/*
* ALSA SoC McASP Audio Layer for TI DAVINCI processor
*
* Multi-channel Audio Serial Port Driver
*
* Author: Nirmal Pandey <n-pandey@ti.com>,
* Suresh Rajashekara <suresh.r@ti.com>
* Steve Chen <schen@.mvista.com>
*
* Copyright: (C) 2009 MontaVista Software, Inc., <source@mvista.com>
* Copyright: (C) 2009 Texas Instruments, India
*
* 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.
*/
#include <linux/init.h>
#include <linux/module.h>
#include <linux/device.h>
#include <linux/slab.h>
#include <linux/delay.h>
#include <linux/io.h>
#include <linux/clk.h>
#include <linux/pm_runtime.h>
#include <linux/of.h>
#include <linux/of_platform.h>
#include <linux/of_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/pcm_params.h>
#include <sound/initval.h>
#include <sound/soc.h>
#include <sound/dmaengine_pcm.h>
#include <sound/omap-pcm.h>
#include "davinci-pcm.h"
#include "davinci-mcasp.h"
#define MCASP_MAX_AFIFO_DEPTH 64
struct davinci_mcasp_context {
u32 txfmtctl;
u32 rxfmtctl;
u32 txfmt;
u32 rxfmt;
u32 aclkxctl;
u32 aclkrctl;
u32 pdir;
};
struct davinci_mcasp {
struct davinci_pcm_dma_params dma_params[2];
struct snd_dmaengine_dai_dma_data dma_data[2];
void __iomem *base;
u32 fifo_base;
struct device *dev;
/* McASP specific data */
int tdm_slots;
u8 op_mode;
u8 num_serializer;
u8 *serial_dir;
u8 version;
u16 bclk_lrclk_ratio;
int streams;
int sysclk_freq;
bool bclk_master;
/* McASP FIFO related */
u8 txnumevt;
u8 rxnumevt;
bool dat_port;
#ifdef CONFIG_PM_SLEEP
struct davinci_mcasp_context context;
#endif
};
static inline void mcasp_set_bits(struct davinci_mcasp *mcasp, u32 offset,
u32 val)
{
void __iomem *reg = mcasp->base + offset;
__raw_writel(__raw_readl(reg) | val, reg);
}
static inline void mcasp_clr_bits(struct davinci_mcasp *mcasp, u32 offset,
u32 val)
{
void __iomem *reg = mcasp->base + offset;
__raw_writel((__raw_readl(reg) & ~(val)), reg);
}
static inline void mcasp_mod_bits(struct davinci_mcasp *mcasp, u32 offset,
u32 val, u32 mask)
{
void __iomem *reg = mcasp->base + offset;
__raw_writel((__raw_readl(reg) & ~mask) | val, reg);
}
static inline void mcasp_set_reg(struct davinci_mcasp *mcasp, u32 offset,
u32 val)
{
__raw_writel(val, mcasp->base + offset);
}
static inline