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159 lines
6.7 KiB
159 lines
6.7 KiB
4 years ago
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/*
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* pcm.h
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*
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* Copyright (c) 2014 Jeremy Garff <jer @ jers.net>
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* PCM version Copyright (c) Ton van Overbeek <tvoverbeek @ gmail.com>
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted
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* provided that the following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of
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* conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list
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* of conditions and the following disclaimer in the documentation and/or other materials
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* provided with the distribution.
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* 3. Neither the name of the owner nor the names of its contributors may be used to endorse
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* or promote products derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND
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* FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
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* OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
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* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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#ifndef __PCM_H__
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#define __PCM_H__
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/*
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*
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* Pin mapping of alternate pin configuration for PCM
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*
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* GPIO ALT PCM_CLK ALT PCM-FS ALT PCM_DIN ALT PCM_DOUT
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*
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* 18 0
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* 19 0
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* 20 0
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* 21 0
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* 28 2
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* 29 2
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* 30 2
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* 31 2
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*
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*/
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typedef struct
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{
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uint32_t cs;
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#define RPI_PCM_CS_STBY (1 << 25)
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#define RPI_PCM_CS_SYNC (1 << 24)
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#define RPI_PCM_CS_RXSEX (1 << 23)
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#define RPI_PCM_CS_RXF (1 << 22)
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#define RPI_PCM_CS_TXE (1 << 21)
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#define RPI_PCM_CS_RXD (1 << 20)
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#define RPI_PCM_CS_TXD (1 << 19)
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#define RPI_PCM_CS_RXR (1 << 18)
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#define RPI_PCM_CS_TXW (1 << 17)
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#define RPI_PCM_CS_RXERR (1 << 16)
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#define RPI_PCM_CS_TXERR (1 << 15)
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#define RPI_PCM_CS_RXSYNC (1 << 14)
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#define RPI_PCM_CS_TXSYNC (1 << 13)
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#define RPI_PCM_CS_DMAEN (1 << 9)
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#define RPI_PCM_CS_RXTHR(val) ((val & 0x03) << 7)
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#define RPI_PCM_CS_TXTHR(val) ((val & 0x03) << 5)
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#define RPI_PCM_CS_RXCLR (1 << 4)
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#define RPI_PCM_CS_TXCLR (1 << 3)
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#define RPI_PCM_CS_TXON (1 << 2)
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#define RPI_PCM_CS_RXON (1 << 1)
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#define RPI_PCM_CS_EN (1 << 0)
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uint32_t fifo;
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uint32_t mode;
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#define RPI_PCM_MODE_CLK_DIS (1 << 28)
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#define RPI_PCM_MODE_PDMN (1 << 27)
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#define RPI_PCM_MODE_PDME (1 << 26)
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#define RPI_PCM_MODE_FRXP (1 << 25)
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#define RPI_PCM_MODE_FTXP (1 << 24)
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#define RPI_PCM_MODE_CLKM (1 << 23)
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#define RPI_PCM_MODE_CLKI (1 << 22)
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#define RPI_PCM_MODE_FSM (1 << 21)
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#define RPI_PCM_MODE_FSI (1 << 20)
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#define RPI_PCM_MODE_FLEN(val) ((val & 0x3ff) << 10)
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#define RPI_PCM_MODE_FSLEN(val) ((val & 0x3ff) << 0)
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uint32_t rxc;
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#define RPI_PCM_RXC_CH1WEX (1 << 31)
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#define RPI_PCM_RXC_CH1EN (1 << 30)
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#define RPI_PCM_RXC_CH1POS(val) ((val & 0x3ff) << 20)
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#define RPI_PCM_RXC_CH1WID(val) ((val & 0x0f) << 16)
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#define RPI_PCM_RXC_CH2WEX (1 << 15)
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#define RPI_PCM_RXC_CH2EN (1 << 14)
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#define RPI_PCM_RXC_CH2POS(val) ((val & 0x3ff) << 4)
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#define RPI_PCM_RXC_CH2WID(val) ((val & 0x0f) << 0)
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uint32_t txc;
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#define RPI_PCM_TXC_CH1WEX (1 << 31)
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#define RPI_PCM_TXC_CH1EN (1 << 30)
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#define RPI_PCM_TXC_CH1POS(val) ((val & 0x3ff) << 20)
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#define RPI_PCM_TXC_CH1WID(val) ((val & 0x0f) << 16)
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#define RPI_PCM_TXC_CH2WEX (1 << 15)
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#define RPI_PCM_TXC_CH2EN (1 << 14)
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#define RPI_PCM_TXC_CH2POS(val) ((val & 0x3ff) << 4)
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#define RPI_PCM_TXC_CH2WID(val) ((val & 0x0f) << 0)
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uint32_t dreq;
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#define RPI_PCM_DREQ_TX_PANIC(val) ((val & 0x7f) << 24)
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#define RPI_PCM_DREQ_RX_PANIC(val) ((val & 0x7f) << 16)
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#define RPI_PCM_DREQ_TX(val) ((val & 0x7f) << 8)
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#define RPI_PCM_DREQ_RX(val) ((val & 0x7f) << 0)
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uint32_t inten;
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#define RPI_PCM_INTEN_RXERR (1 << 3)
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#define RPI_PCM_INTEN_TXERR (1 << 2)
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#define RPI_PCM_INTEN_RXR (1 << 1)
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#define RPI_PCM_INTEN_TXW (1 << 0)
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uint32_t intstc;
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#define RPI_PCM_INTSTC_RXERR (1 << 3)
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#define RPI_PCM_INTSTC_TXERR (1 << 2)
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#define RPI_PCM_INTSTC_RXR (1 << 1)
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#define RPI_PCM_INTSTC_TXW (1 << 0)
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uint32_t gray;
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#define RPI_PCM_GRAY_RXFIFOLEVEL(val) ((val & 0x3f) << 16)
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#define RPI_PCM_GRAY_FLUSHED(val) ((val & 0x3f) << 10
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#define RPI_PCM_GRAY_RXLEVEL(val) ((val & 0x3f) << 4)
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#define RPI_PCM_GRAY_FLUSH (1 << 2)
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#define RPI_PCM_GRAY_CLR (1 << 1)
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#define RPI_PCM_GRAY_EN (1 << 0)
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} __attribute__((packed, aligned(4))) pcm_t;
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#define PCM_OFFSET (0x00203000)
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#define PCM_PERIPH_PHYS (0x7e203000)
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#define NUM_PCMFUNS 4
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#define PCMFUN_CLK 0
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#define PCMFUN_FS 1
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#define PCMFUN_DIN 2
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#define PCMFUN_DOUT 3
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typedef struct
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{
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int pinnum;
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int altnum;
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} pcm_pin_table_t;
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typedef struct
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{
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const int count;
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const pcm_pin_table_t *pins;
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} pcm_pin_tables_t;
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int pcm_pin_alt(int pcmfun, int pinnum);
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#endif /* __PCM_H__ */
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