/*
* siu.h - ALSA SoC driver for Renesas SH7343, SH7722 SIU peripheral.
*
* Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
* Copyright (C) 2006 Carlos Munoz <carlos@kenati.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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
#ifndef SIU_H
#define SIU_H
/* Common kernel and user-space firmware-building defines and types */
#define YRAM0_SIZE (0x0040 / 4) /* 16 */
#define YRAM1_SIZE (0x0080 / 4) /* 32 */
#define YRAM2_SIZE (0x0040 / 4) /* 16 */
#define YRAM3_SIZE (0x0080 / 4) /* 32 */
#define YRAM4_SIZE (0x0080 / 4) /* 32 */
#define YRAM_DEF_SIZE (YRAM0_SIZE + YRAM1_SIZE + YRAM2_SIZE + \
YRAM3_SIZE + YRAM4_SIZE)
#define YRAM_FIR_SIZE (0x0400 / 4) /* 256 */
#define YRAM_IIR_SIZE (0x0200 / 4) /* 128 */
#define XRAM0_SIZE (0x0400 / 4) /* 256 */
#define XRAM1_SIZE (0x0200 / 4) /* 128 */
#define XRAM2_SIZE (0x0200 / 4) /* 128 */
/* PRAM program array size */
#define PRAM0_SIZE (0x0100 / 4) /* 64 */
#define PRAM1_SIZE ((0x2000 - 0x0100) / 4) /* 1984 */
#include <linux/types.h>
struct siu_spb_param {
__u32 ab1a; /* input FIFO address */
__u32 ab0a; /* output FIFO address */
__u32 dir; /* 0=the ather except CPUOUTPUT, 1=CPUINPUT */
__u32 event; /* SPB program starting conditions */
__u32 stfifo; /* STFIFO register setting value */
__u32 trdat; /* TRDAT register setting value */
};
struct siu_firmware {
__u32 yram_fir_coeff[YRAM_FIR_SIZE];
__u32 pram0[PRAM0_SIZE];
__u32 pram1[PRAM1_SIZE];
__u32 yram0[YRAM0_SIZE];
__u32 yram1[YRAM1_SIZE];
__u32 yram2[YRAM2_SIZE];
__u32 yram3[YRAM3_SIZE];
__u32 yram4[YRAM4_SIZE];
__u32 spbpar_num;
struct siu_spb_param spbpar[32];
};
#ifdef __KERNEL__
#include <linux/dmaengine.h>
#include <linux/interrupt.h>
#include <linux/io.h>
#include <asm/dma-sh.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc-dai.h>
#define SIU_PERIOD_BYTES_MAX 8192 /* DMA transfer/period size */
#define SIU_PERIOD_BYTES_MIN 256 /* DMA transfer/period size */
#define SIU_PERIODS_MAX 64 /* Max periods in buffer */
#define SIU_PERIODS_MIN 4 /* Min periods in buffer */
#define SIU_BUFFER_BYTES_MAX (SIU_PERIOD_BYTES_MAX * SIU_PERIODS_MAX)
/* SIU ports: only one can be used at a time */
enum {
SIU_PORT_A,
SIU_PORT_B,
SIU_PORT_NUM,
};
/* SIU clock configuration */
enum {
SIU_CLKA_PLL,
SIU_CLKA_EXT,
SIU_CLKB_PLL,
SIU_CLKB_EXT
};
struct siu_info {
int port_id;
u32 __iomem *pram;
u32 __iomem *xram;
u32 __iomem *yram;
u32 __iomem *reg;
struct siu_firmware fw;
};
struct siu_stream {
struct tasklet_struct tasklet;
struct snd_pcm_substream *substream;
snd_pcm_format_t format;
size_t buf_bytes;
size_t period_bytes;
int cur_period; /* Period currently in dma */
u32 volume;
snd_pcm_sframes_t xfer_cnt; /* Number of frames */
u8 rw_flg; /* transfer status */
/* DMA status */
struct dma_chan *chan; /* DMA channel */
struct dma_async_tx_descriptor *tx_desc;
dma_cookie_t cookie;
struct sh_dmae_slave param;
};
struct siu_port {
unsigned long play_cap; /* Used to track full duplex */
struct snd_pcm *pcm;
struct siu_stream playback;
struct siu_stream capture;
u32 stfifo; /* STFIFO value from firmware */
u32 trdat; /* TRDAT value from firmware */
};
extern struct siu_port *siu_ports[SIU_PORT_NUM];
static inline struct siu_port *siu_port_info(struct snd_pcm_substream *substream)
{
struct platform_device *pdev =
to_platform_device(substream->pcm->card->dev);
return siu_ports[pdev->id];
}
/* Register access */
static inline void siu_write32(u32 __iomem *addr, u32 val)
{
__raw_writel(val, addr);
}
static inline u32 siu_read32(u32 __iomem *addr)
{
return __raw_readl(addr);
}
/* SIU registers */
#define SIU_IFCTL (0x000 / sizeof(u32))
#define SIU_SRCTL (0x004 / sizeof(u32))
#define SIU_SFORM (0x008 / sizeof(u32))
#define SIU_CKCTL (0x00c / sizeof(u32))
#define SIU_TRDAT (0x010 / sizeof(u32))
#define SIU_STFIFO (0x014 / sizeof(u32))
#define SIU_DPAK (0x01c / sizeof(u32))
#define SIU_CKREV (0x020 / sizeof(u32))
#define SIU_EVNTC (0x028 / sizeof(u32))
#define SIU_SBCTL (0x040 / sizeof(u32))
#define SIU_SBPSET (0x044 / sizeof(u32))
#define SIU_SBFSTS (0x068 / sizeof(u32))
#define SIU_SBDVCA (0x06c / sizeof(u32))
#define SIU_SBDVCB (0x070 / sizeof(u32))
#define SIU_SBACTIV (0x074 / sizeof(u32))
#define SIU_DMAIA (0x090 / sizeof(u32))
#define SIU_DMAIB (0x094 / sizeof(u32))
#define SIU_DMAOA (0x098 / sizeof(u32))
#define SIU_DMAOB (0x09c / sizeof(u32))
#define SIU_DMAML (0x0a0 / sizeof(u32))
#define SIU_SPSTS (0x0cc / sizeof(u32))
#define SIU_SPCTL (0x0d0 / sizeof(u32))
#define SIU_BRGASEL (0x100 / sizeof(u32))
#define SIU_BRRA (0x104 / sizeof(u32))
#define SIU_BRGBSEL (0x108 / sizeof(u32))
#define SIU_BRRB (0x10c / sizeof(u32))
extern struct snd_soc_platform siu_platform;
extern struct snd_soc_dai siu_i2s_dai;
int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card);
void siu_free_port(struct siu_port *port_info);
#endif
#endif /* SIU_H */
