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Diffstat (limited to 'sound/soc/blackfin/bf5xx-sport.h')
| -rw-r--r-- | sound/soc/blackfin/bf5xx-sport.h | 192 |
1 files changed, 192 insertions, 0 deletions
diff --git a/sound/soc/blackfin/bf5xx-sport.h b/sound/soc/blackfin/bf5xx-sport.h new file mode 100644 index 0000000..4c16345 --- /dev/null +++ b/sound/soc/blackfin/bf5xx-sport.h @@ -0,0 +1,192 @@ +/* + * 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_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; +#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 */ |