diff options
Diffstat (limited to 'include/linux/mxc_asrc.h')
| -rw-r--r-- | include/linux/mxc_asrc.h | 210 |
1 files changed, 210 insertions, 0 deletions
diff --git a/include/linux/mxc_asrc.h b/include/linux/mxc_asrc.h new file mode 100644 index 000000000000..17e97bef003b --- /dev/null +++ b/include/linux/mxc_asrc.h @@ -0,0 +1,210 @@ +/* + * Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved. + */ + +/* + * The code contained herein is licensed under the GNU General Public + * License. You may obtain a copy of the GNU General Public License + * Version 2 or later at the following locations: + * + * http://www.opensource.org/licenses/gpl-license.html + * http://www.gnu.org/copyleft/gpl.html + */ + +/*! + * @file mx35_asrc.h + * + * @brief MX35 Asynchronous Sample Rate Converter + * + * @ingroup ?? + */ + +#ifndef __MXC_ASRC_H__ +#define __MXC_ASRC_H__ + +#define ASRC_IOC_MAGIC 'C' + +#define ASRC_REQ_PAIR _IOWR(ASRC_IOC_MAGIC, 0, struct asrc_req) +#define ASRC_CONFIG_PAIR _IOWR(ASRC_IOC_MAGIC, 1, struct asrc_config) +#define ASRC_RELEASE_PAIR _IOW(ASRC_IOC_MAGIC, 2, enum asrc_pair_index) +#define ASRC_QUERYBUF _IOWR(ASRC_IOC_MAGIC, 3, struct asrc_buffer) +#define ASRC_Q_INBUF _IOW(ASRC_IOC_MAGIC, 4, struct asrc_buffer) +#define ASRC_DQ_INBUF _IOW(ASRC_IOC_MAGIC, 5, struct asrc_buffer) +#define ASRC_Q_OUTBUF _IOW(ASRC_IOC_MAGIC, 6, struct asrc_buffer) +#define ASRC_DQ_OUTBUF _IOW(ASRC_IOC_MAGIC, 7, struct asrc_buffer) +#define ASRC_START_CONV _IOW(ASRC_IOC_MAGIC, 8, enum asrc_pair_index) +#define ASRC_STOP_CONV _IOW(ASRC_IOC_MAGIC, 9, enum asrc_pair_index) +#define ASRC_STATUS _IOW(ASRC_IOC_MAGIC, 10, struct asrc_status_flags) +#define ASRC_FLUSH _IOW(ASRC_IOC_MAGIC, 11, enum asrc_pair_index) + +enum asrc_pair_index { + ASRC_PAIR_A, + ASRC_PAIR_B, + ASRC_PAIR_C +}; + +enum asrc_inclk { + INCLK_NONE = 0x03, + INCLK_ESAI_RX = 0x00, + INCLK_SSI1_RX = 0x01, + INCLK_SSI2_RX = 0x02, + INCLK_SPDIF_RX = 0x04, + INCLK_MLB_CLK = 0x05, + INCLK_ESAI_TX = 0x08, + INCLK_SSI1_TX = 0x09, + INCLK_SSI2_TX = 0x0a, + INCLK_SPDIF_TX = 0x0c, + INCLK_ASRCK1_CLK = 0x0f, +}; + +enum asrc_outclk { + OUTCLK_NONE = 0x03, + OUTCLK_ESAI_TX = 0x00, + OUTCLK_SSI1_TX = 0x01, + OUTCLK_SSI2_TX = 0x02, + OUTCLK_SPDIF_TX = 0x04, + OUTCLK_MLB_CLK = 0x05, + OUTCLK_ESAI_RX = 0x08, + OUTCLK_SSI1_RX = 0x09, + OUTCLK_SSI2_RX = 0x0a, + OUTCLK_SPDIF_RX = 0x0c, + OUTCLK_ASRCK1_CLK = 0x0f, +}; + +struct asrc_config { + enum asrc_pair_index pair; + unsigned int channel_num; + unsigned int buffer_num; + unsigned int dma_buffer_size; + unsigned int input_sample_rate; + unsigned int output_sample_rate; + unsigned int word_width; + enum asrc_inclk inclk; + enum asrc_outclk outclk; +}; + +struct asrc_pair { + unsigned int start_channel; + unsigned int chn_num; + unsigned int chn_max; + unsigned int active; + unsigned int overload_error; +}; + +struct asrc_req { + unsigned int chn_num; + enum asrc_pair_index index; +}; + +struct asrc_querybuf { + unsigned int buffer_index; + unsigned int input_length; + unsigned int output_length; + unsigned long input_offset; + unsigned long output_offset; +}; + +struct asrc_buffer { + unsigned int index; + unsigned int length; + int buf_valid; +}; + +struct asrc_status_flags { + enum asrc_pair_index index; + unsigned int overload_error; +}; + +#define ASRC_BUF_NA -35 /* ASRC DQ's buffer is NOT available */ +#define ASRC_BUF_AV 35 /* ASRC DQ's buffer is available */ +enum asrc_error_status { + ASRC_TASK_Q_OVERLOAD = 0x01, + ASRC_OUTPUT_TASK_OVERLOAD = 0x02, + ASRC_INPUT_TASK_OVERLOAD = 0x04, + ASRC_OUTPUT_BUFFER_OVERFLOW = 0x08, + ASRC_INPUT_BUFFER_UNDERRUN = 0x10, +}; + +#ifdef __KERNEL__ + +#define ASRC_DMA_BUFFER_NUM 8 + +#define ASRC_ASRCTR_REG 0x00 +#define ASRC_ASRIER_REG 0x04 +#define ASRC_ASRCNCR_REG 0x0C +#define ASRC_ASRCFG_REG 0x10 +#define ASRC_ASRCSR_REG 0x14 +#define ASRC_ASRCDR1_REG 0x18 +#define ASRC_ASRCDR2_REG 0x1C +#define ASRC_ASRSTR_REG 0x20 +#define ASRC_ASRRA_REG 0x24 +#define ASRC_ASRRB_REG 0x28 +#define ASRC_ASRRC_REG 0x2C +#define ASRC_ASRPM1_REG 0x40 +#define ASRC_ASRPM2_REG 0x44 +#define ASRC_ASRPM3_REG 0x48 +#define ASRC_ASRPM4_REG 0x4C +#define ASRC_ASRPM5_REG 0x50 +#define ASRC_ASRTFR1 0x54 +#define ASRC_ASRCCR_REG 0x5C +#define ASRC_ASRDIA_REG 0x60 +#define ASRC_ASRDOA_REG 0x64 +#define ASRC_ASRDIB_REG 0x68 +#define ASRC_ASRDOB_REG 0x6C +#define ASRC_ASRDIC_REG 0x70 +#define ASRC_ASRDOC_REG 0x74 +#define ASRC_ASRIDRHA_REG 0x80 +#define ASRC_ASRIDRLA_REG 0x84 +#define ASRC_ASRIDRHB_REG 0x88 +#define ASRC_ASRIDRLB_REG 0x8C +#define ASRC_ASRIDRHC_REG 0x90 +#define ASRC_ASRIDRLC_REG 0x94 +#define ASRC_ASR76K_REG 0x98 +#define ASRC_ASR56K_REG 0x9C + +struct dma_block { + unsigned int index; + unsigned int length; + unsigned char *dma_vaddr; + dma_addr_t dma_paddr; + struct list_head queue; +}; + +struct asrc_pair_params { + enum asrc_pair_index index; + struct list_head input_queue; + struct list_head input_done_queue; + struct list_head output_queue; + struct list_head output_done_queue; + wait_queue_head_t input_wait_queue; + wait_queue_head_t output_wait_queue; + unsigned int input_counter; + unsigned int output_counter; + unsigned int input_queue_empty; + unsigned int output_queue_empty; + unsigned int input_dma_channel; + unsigned int output_dma_channel; + unsigned int input_buffer_size; + unsigned int output_buffer_size; + unsigned int buffer_num; + unsigned int pair_hold; + unsigned int asrc_active; + struct dma_block input_dma[ASRC_DMA_BUFFER_NUM]; + struct dma_block output_dma[ASRC_DMA_BUFFER_NUM]; + struct semaphore busy_lock; +}; + +struct asrc_data { + struct asrc_pair asrc_pair[3]; +}; + +extern int asrc_req_pair(int chn_num, enum asrc_pair_index *index); +extern void asrc_release_pair(enum asrc_pair_index index); +extern int asrc_config_pair(struct asrc_config *config); +extern void asrc_get_status(struct asrc_status_flags *flags); +extern void asrc_start_conv(enum asrc_pair_index index); +extern void asrc_stop_conv(enum asrc_pair_index index); + +#endif /* __kERNEL__ */ + +#endif /* __MXC_ASRC_H__ */ |