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https://github.com/edk2-porting/linux-next.git
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8b1935e6a3
Separate SH DMA headers into ones, commonly used by both drivers, and ones, specific to each of them. This will make the future development of the dmaengine driver easier. Signed-off-by: Guennadi Liakhovetski <g.liakhovetski@gmx.de> Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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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