/* * File: bf5xx_ac97_sport.h * Based on: * Author: Roy Huang <roy.huang@analog.com> * * Created: * Description: * * Copyright 2004-2007 Analog Devices Inc. * * Bugs: Enter bugs at http://blackfin.uclinux.org/ * * 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, see the file COPYING, or write * to the Free Software Foundation, Inc., * 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA */ #ifndef __BF5XX_SPORT_H__ #define __BF5XX_SPORT_H__ #include <linux/types.h> #include <linux/wait.h> #include <linux/workqueue.h> #include <asm/dma.h> struct sport_register { u16 tcr1; u16 reserved0; u16 tcr2; u16 reserved1; u16 tclkdiv; u16 reserved2; u16 tfsdiv; u16 reserved3; u32 tx; u32 reserved_l0; u32 rx; u32 reserved_l1; u16 rcr1; u16 reserved4; u16 rcr2; u16 reserved5; u16 rclkdiv; u16 reserved6; u16 rfsdiv; u16 reserved7; u16 stat; u16 reserved8; u16 chnl; u16 reserved9; u16 mcmc1; u16 reserved10; u16 mcmc2; u16 reserved11; u32 mtcs0; u32 mtcs1; u32 mtcs2; u32 mtcs3; u32 mrcs0; u32 mrcs1; u32 mrcs2; u32 mrcs3; }; #define DESC_ELEMENT_COUNT 9 struct sport_device { int dma_rx_chan; int dma_tx_chan; int err_irq; struct sport_register *regs; unsigned char *rx_buf; unsigned char *tx_buf; unsigned int rx_fragsize; unsigned int tx_fragsize; unsigned int rx_frags; unsigned int tx_frags; unsigned int wdsize; /* for dummy dma transfer */ void *dummy_buf; unsigned int dummy_count; /* DMA descriptor ring head of current audio stream*/ struct dmasg *dma_rx_desc; struct dmasg *dma_tx_desc; unsigned int rx_desc_bytes; unsigned int tx_desc_bytes; unsigned int rx_run:1; /* rx is running */ unsigned int tx_run:1; /* tx is running */ struct dmasg *dummy_rx_desc; struct dmasg *dummy_tx_desc; struct dmasg *curr_rx_desc; struct dmasg *curr_tx_desc; int rx_curr_frag; int tx_curr_frag; unsigned int rcr1; unsigned int rcr2; int rx_tdm_count; unsigned int tcr1; unsigned int tcr2; int tx_tdm_count; void (*rx_callback)(void *data); void *rx_data; void (*tx_callback)(void *data); void *tx_data; void (*err_callback)(void *data); void *err_data; unsigned char *tx_dma_buf; unsigned char *rx_dma_buf; #ifdef CONFIG_SND_BF5XX_MMAP_SUPPORT dma_addr_t tx_dma_phy; dma_addr_t rx_dma_phy; int tx_pos;/*pcm sample count*/ int rx_pos; unsigned int tx_buffer_size; unsigned int rx_buffer_size; int tx_delay_pos; int once; #endif void *private_data; }; extern struct sport_device *sport_handle; struct sport_param { int dma_rx_chan; int dma_tx_chan; int err_irq; struct sport_register *regs; }; struct sport_device *sport_init(struct sport_param *param, unsigned wdsize, unsigned dummy_count, void *private_data); void sport_done(struct sport_device *sport); /* first use these ...*/ /* note: multichannel is in units of 8 channels, tdm_count is number of channels * NOT / 8 ! all channels are enabled by default */ int sport_set_multichannel(struct sport_device *sport, int tdm_count, u32 mask, int packed); int sport_config_rx(struct sport_device *sport, unsigned int rcr1, unsigned int rcr2, unsigned int clkdiv, unsigned int fsdiv); int sport_config_tx(struct sport_device *sport, unsigned int tcr1, unsigned int tcr2, unsigned int clkdiv, unsigned int fsdiv); /* ... then these: */ /* buffer size (in bytes) == fragcount * fragsize_bytes */ /* this is not a very general api, it sets the dma to 2d autobuffer mode */ int sport_config_rx_dma(struct sport_device *sport, void *buf, int fragcount, size_t fragsize_bytes); int sport_config_tx_dma(struct sport_device *sport, void *buf, int fragcount, size_t fragsize_bytes); int sport_tx_start(struct sport_device *sport); int sport_tx_stop(struct sport_device *sport); int sport_rx_start(struct sport_device *sport); int sport_rx_stop(struct sport_device *sport); /* for use in interrupt handler */ unsigned long sport_curr_offset_rx(struct sport_device *sport); unsigned long sport_curr_offset_tx(struct sport_device *sport); void sport_incfrag(struct sport_device *sport, int *frag, int tx); void sport_decfrag(struct sport_device *sport, int *frag, int tx); int sport_set_rx_callback(struct sport_device *sport, void (*rx_callback)(void *), void *rx_data); int sport_set_tx_callback(struct sport_device *sport, void (*tx_callback)(void *), void *tx_data); int sport_set_err_callback(struct sport_device *sport, void (*err_callback)(void *), void *err_data); int sport_send_and_recv(struct sport_device *sport, u8 *out_data, \ u8 *in_data, int len); #endif /* BF53X_SPORT_H */