194 lines
5.6 KiB
C
194 lines
5.6 KiB
C
/*
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* siu.h - ALSA SoC driver for Renesas SH7343, SH7722 SIU peripheral.
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*
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* Copyright (C) 2009-2010 Guennadi Liakhovetski <g.liakhovetski@gmx.de>
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* Copyright (C) 2006 Carlos Munoz <carlos@kenati.com>
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef SIU_H
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#define SIU_H
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/* Common kernel and user-space firmware-building defines and types */
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#define YRAM0_SIZE (0x0040 / 4) /* 16 */
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#define YRAM1_SIZE (0x0080 / 4) /* 32 */
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#define YRAM2_SIZE (0x0040 / 4) /* 16 */
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#define YRAM3_SIZE (0x0080 / 4) /* 32 */
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#define YRAM4_SIZE (0x0080 / 4) /* 32 */
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#define YRAM_DEF_SIZE (YRAM0_SIZE + YRAM1_SIZE + YRAM2_SIZE + \
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YRAM3_SIZE + YRAM4_SIZE)
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#define YRAM_FIR_SIZE (0x0400 / 4) /* 256 */
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#define YRAM_IIR_SIZE (0x0200 / 4) /* 128 */
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#define XRAM0_SIZE (0x0400 / 4) /* 256 */
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#define XRAM1_SIZE (0x0200 / 4) /* 128 */
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#define XRAM2_SIZE (0x0200 / 4) /* 128 */
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/* PRAM program array size */
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#define PRAM0_SIZE (0x0100 / 4) /* 64 */
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#define PRAM1_SIZE ((0x2000 - 0x0100) / 4) /* 1984 */
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#include <linux/types.h>
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struct siu_spb_param {
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__u32 ab1a; /* input FIFO address */
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__u32 ab0a; /* output FIFO address */
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__u32 dir; /* 0=the ather except CPUOUTPUT, 1=CPUINPUT */
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__u32 event; /* SPB program starting conditions */
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__u32 stfifo; /* STFIFO register setting value */
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__u32 trdat; /* TRDAT register setting value */
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};
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struct siu_firmware {
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__u32 yram_fir_coeff[YRAM_FIR_SIZE];
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__u32 pram0[PRAM0_SIZE];
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__u32 pram1[PRAM1_SIZE];
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__u32 yram0[YRAM0_SIZE];
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__u32 yram1[YRAM1_SIZE];
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__u32 yram2[YRAM2_SIZE];
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__u32 yram3[YRAM3_SIZE];
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__u32 yram4[YRAM4_SIZE];
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__u32 spbpar_num;
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struct siu_spb_param spbpar[32];
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};
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#ifdef __KERNEL__
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#include <linux/dmaengine.h>
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#include <linux/interrupt.h>
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#include <linux/io.h>
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#include <asm/dmaengine.h>
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#include <sound/core.h>
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#include <sound/pcm.h>
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#include <sound/soc-dai.h>
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#define SIU_PERIOD_BYTES_MAX 8192 /* DMA transfer/period size */
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#define SIU_PERIOD_BYTES_MIN 256 /* DMA transfer/period size */
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#define SIU_PERIODS_MAX 64 /* Max periods in buffer */
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#define SIU_PERIODS_MIN 4 /* Min periods in buffer */
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#define SIU_BUFFER_BYTES_MAX (SIU_PERIOD_BYTES_MAX * SIU_PERIODS_MAX)
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/* SIU ports: only one can be used at a time */
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enum {
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SIU_PORT_A,
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SIU_PORT_B,
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SIU_PORT_NUM,
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};
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/* SIU clock configuration */
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enum {
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SIU_CLKA_PLL,
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SIU_CLKA_EXT,
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SIU_CLKB_PLL,
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SIU_CLKB_EXT
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};
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struct siu_info {
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int port_id;
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u32 __iomem *pram;
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u32 __iomem *xram;
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u32 __iomem *yram;
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u32 __iomem *reg;
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struct siu_firmware fw;
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};
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struct siu_stream {
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struct tasklet_struct tasklet;
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struct snd_pcm_substream *substream;
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snd_pcm_format_t format;
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size_t buf_bytes;
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size_t period_bytes;
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int cur_period; /* Period currently in dma */
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u32 volume;
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snd_pcm_sframes_t xfer_cnt; /* Number of frames */
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u8 rw_flg; /* transfer status */
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/* DMA status */
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struct dma_chan *chan; /* DMA channel */
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struct dma_async_tx_descriptor *tx_desc;
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dma_cookie_t cookie;
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struct sh_dmae_slave param;
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};
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struct siu_port {
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unsigned long play_cap; /* Used to track full duplex */
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struct snd_pcm *pcm;
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struct siu_stream playback;
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struct siu_stream capture;
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u32 stfifo; /* STFIFO value from firmware */
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u32 trdat; /* TRDAT value from firmware */
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};
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extern struct siu_port *siu_ports[SIU_PORT_NUM];
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static inline struct siu_port *siu_port_info(struct snd_pcm_substream *substream)
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{
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struct platform_device *pdev =
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to_platform_device(substream->pcm->card->dev);
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return siu_ports[pdev->id];
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}
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/* Register access */
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static inline void siu_write32(u32 __iomem *addr, u32 val)
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{
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__raw_writel(val, addr);
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}
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static inline u32 siu_read32(u32 __iomem *addr)
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{
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return __raw_readl(addr);
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}
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/* SIU registers */
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#define SIU_IFCTL (0x000 / sizeof(u32))
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#define SIU_SRCTL (0x004 / sizeof(u32))
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#define SIU_SFORM (0x008 / sizeof(u32))
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#define SIU_CKCTL (0x00c / sizeof(u32))
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#define SIU_TRDAT (0x010 / sizeof(u32))
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#define SIU_STFIFO (0x014 / sizeof(u32))
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#define SIU_DPAK (0x01c / sizeof(u32))
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#define SIU_CKREV (0x020 / sizeof(u32))
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#define SIU_EVNTC (0x028 / sizeof(u32))
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#define SIU_SBCTL (0x040 / sizeof(u32))
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#define SIU_SBPSET (0x044 / sizeof(u32))
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#define SIU_SBFSTS (0x068 / sizeof(u32))
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#define SIU_SBDVCA (0x06c / sizeof(u32))
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#define SIU_SBDVCB (0x070 / sizeof(u32))
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#define SIU_SBACTIV (0x074 / sizeof(u32))
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#define SIU_DMAIA (0x090 / sizeof(u32))
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#define SIU_DMAIB (0x094 / sizeof(u32))
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#define SIU_DMAOA (0x098 / sizeof(u32))
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#define SIU_DMAOB (0x09c / sizeof(u32))
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#define SIU_DMAML (0x0a0 / sizeof(u32))
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#define SIU_SPSTS (0x0cc / sizeof(u32))
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#define SIU_SPCTL (0x0d0 / sizeof(u32))
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#define SIU_BRGASEL (0x100 / sizeof(u32))
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#define SIU_BRRA (0x104 / sizeof(u32))
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#define SIU_BRGBSEL (0x108 / sizeof(u32))
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#define SIU_BRRB (0x10c / sizeof(u32))
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extern struct snd_soc_platform siu_platform;
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extern struct snd_soc_dai siu_i2s_dai;
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int siu_init_port(int port, struct siu_port **port_info, struct snd_card *card);
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void siu_free_port(struct siu_port *port_info);
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#endif
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#endif /* SIU_H */
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