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https://github.com/genesi/linux-legacy.git
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be0524d38f
This is i.MX BSP 5.0.0 release ported to 2.6.31 Signed-off-by: Rob Herring <r.herring@freescale.com> Signed-off-by: Alan Tull <r80115@freescale.com> Signed-off-by: Xinyu Chen <xinyu.chen@freescale.com>
211 lines
5.4 KiB
C
211 lines
5.4 KiB
C
/*
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* Copyright 2008-2009 Freescale Semiconductor, Inc. All Rights Reserved.
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*/
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/*
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* The code contained herein is licensed under the GNU General Public
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* License. You may obtain a copy of the GNU General Public License
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* Version 2 or later at the following locations:
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*
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* http://www.opensource.org/licenses/gpl-license.html
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* http://www.gnu.org/copyleft/gpl.html
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*/
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/*!
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* @file mx35_asrc.h
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*
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* @brief MX35 Asynchronous Sample Rate Converter
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*
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* @ingroup ??
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*/
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#ifndef __MXC_ASRC_H__
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#define __MXC_ASRC_H__
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#define ASRC_IOC_MAGIC 'C'
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#define ASRC_REQ_PAIR _IOWR(ASRC_IOC_MAGIC, 0, struct asrc_req)
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#define ASRC_CONFIG_PAIR _IOWR(ASRC_IOC_MAGIC, 1, struct asrc_config)
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#define ASRC_RELEASE_PAIR _IOW(ASRC_IOC_MAGIC, 2, enum asrc_pair_index)
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#define ASRC_QUERYBUF _IOWR(ASRC_IOC_MAGIC, 3, struct asrc_buffer)
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#define ASRC_Q_INBUF _IOW(ASRC_IOC_MAGIC, 4, struct asrc_buffer)
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#define ASRC_DQ_INBUF _IOW(ASRC_IOC_MAGIC, 5, struct asrc_buffer)
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#define ASRC_Q_OUTBUF _IOW(ASRC_IOC_MAGIC, 6, struct asrc_buffer)
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#define ASRC_DQ_OUTBUF _IOW(ASRC_IOC_MAGIC, 7, struct asrc_buffer)
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#define ASRC_START_CONV _IOW(ASRC_IOC_MAGIC, 8, enum asrc_pair_index)
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#define ASRC_STOP_CONV _IOW(ASRC_IOC_MAGIC, 9, enum asrc_pair_index)
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#define ASRC_STATUS _IOW(ASRC_IOC_MAGIC, 10, struct asrc_status_flags)
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#define ASRC_FLUSH _IOW(ASRC_IOC_MAGIC, 11, enum asrc_pair_index)
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enum asrc_pair_index {
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ASRC_PAIR_A,
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ASRC_PAIR_B,
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ASRC_PAIR_C
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};
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enum asrc_inclk {
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INCLK_NONE = 0x03,
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INCLK_ESAI_RX = 0x00,
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INCLK_SSI1_RX = 0x01,
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INCLK_SSI2_RX = 0x02,
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INCLK_SPDIF_RX = 0x04,
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INCLK_MLB_CLK = 0x05,
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INCLK_ESAI_TX = 0x08,
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INCLK_SSI1_TX = 0x09,
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INCLK_SSI2_TX = 0x0a,
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INCLK_SPDIF_TX = 0x0c,
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INCLK_ASRCK1_CLK = 0x0f,
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};
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enum asrc_outclk {
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OUTCLK_NONE = 0x03,
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OUTCLK_ESAI_TX = 0x00,
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OUTCLK_SSI1_TX = 0x01,
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OUTCLK_SSI2_TX = 0x02,
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OUTCLK_SPDIF_TX = 0x04,
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OUTCLK_MLB_CLK = 0x05,
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OUTCLK_ESAI_RX = 0x08,
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OUTCLK_SSI1_RX = 0x09,
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OUTCLK_SSI2_RX = 0x0a,
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OUTCLK_SPDIF_RX = 0x0c,
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OUTCLK_ASRCK1_CLK = 0x0f,
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};
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struct asrc_config {
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enum asrc_pair_index pair;
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unsigned int channel_num;
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unsigned int buffer_num;
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unsigned int dma_buffer_size;
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unsigned int input_sample_rate;
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unsigned int output_sample_rate;
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unsigned int word_width;
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enum asrc_inclk inclk;
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enum asrc_outclk outclk;
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};
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struct asrc_pair {
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unsigned int start_channel;
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unsigned int chn_num;
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unsigned int chn_max;
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unsigned int active;
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unsigned int overload_error;
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};
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struct asrc_req {
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unsigned int chn_num;
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enum asrc_pair_index index;
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};
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struct asrc_querybuf {
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unsigned int buffer_index;
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unsigned int input_length;
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unsigned int output_length;
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unsigned long input_offset;
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unsigned long output_offset;
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};
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struct asrc_buffer {
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unsigned int index;
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unsigned int length;
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int buf_valid;
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};
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struct asrc_status_flags {
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enum asrc_pair_index index;
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unsigned int overload_error;
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};
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#define ASRC_BUF_NA -35 /* ASRC DQ's buffer is NOT available */
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#define ASRC_BUF_AV 35 /* ASRC DQ's buffer is available */
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enum asrc_error_status {
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ASRC_TASK_Q_OVERLOAD = 0x01,
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ASRC_OUTPUT_TASK_OVERLOAD = 0x02,
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ASRC_INPUT_TASK_OVERLOAD = 0x04,
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ASRC_OUTPUT_BUFFER_OVERFLOW = 0x08,
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ASRC_INPUT_BUFFER_UNDERRUN = 0x10,
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};
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#ifdef __KERNEL__
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#define ASRC_DMA_BUFFER_NUM 8
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#define ASRC_ASRCTR_REG 0x00
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#define ASRC_ASRIER_REG 0x04
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#define ASRC_ASRCNCR_REG 0x0C
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#define ASRC_ASRCFG_REG 0x10
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#define ASRC_ASRCSR_REG 0x14
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#define ASRC_ASRCDR1_REG 0x18
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#define ASRC_ASRCDR2_REG 0x1C
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#define ASRC_ASRSTR_REG 0x20
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#define ASRC_ASRRA_REG 0x24
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#define ASRC_ASRRB_REG 0x28
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#define ASRC_ASRRC_REG 0x2C
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#define ASRC_ASRPM1_REG 0x40
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#define ASRC_ASRPM2_REG 0x44
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#define ASRC_ASRPM3_REG 0x48
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#define ASRC_ASRPM4_REG 0x4C
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#define ASRC_ASRPM5_REG 0x50
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#define ASRC_ASRTFR1 0x54
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#define ASRC_ASRCCR_REG 0x5C
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#define ASRC_ASRDIA_REG 0x60
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#define ASRC_ASRDOA_REG 0x64
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#define ASRC_ASRDIB_REG 0x68
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#define ASRC_ASRDOB_REG 0x6C
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#define ASRC_ASRDIC_REG 0x70
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#define ASRC_ASRDOC_REG 0x74
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#define ASRC_ASRIDRHA_REG 0x80
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#define ASRC_ASRIDRLA_REG 0x84
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#define ASRC_ASRIDRHB_REG 0x88
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#define ASRC_ASRIDRLB_REG 0x8C
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#define ASRC_ASRIDRHC_REG 0x90
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#define ASRC_ASRIDRLC_REG 0x94
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#define ASRC_ASR76K_REG 0x98
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#define ASRC_ASR56K_REG 0x9C
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struct dma_block {
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unsigned int index;
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unsigned int length;
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unsigned char *dma_vaddr;
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dma_addr_t dma_paddr;
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struct list_head queue;
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};
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struct asrc_pair_params {
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enum asrc_pair_index index;
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struct list_head input_queue;
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struct list_head input_done_queue;
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struct list_head output_queue;
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struct list_head output_done_queue;
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wait_queue_head_t input_wait_queue;
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wait_queue_head_t output_wait_queue;
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unsigned int input_counter;
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unsigned int output_counter;
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unsigned int input_queue_empty;
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unsigned int output_queue_empty;
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unsigned int input_dma_channel;
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unsigned int output_dma_channel;
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unsigned int input_buffer_size;
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unsigned int output_buffer_size;
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unsigned int buffer_num;
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unsigned int pair_hold;
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unsigned int asrc_active;
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struct dma_block input_dma[ASRC_DMA_BUFFER_NUM];
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struct dma_block output_dma[ASRC_DMA_BUFFER_NUM];
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struct semaphore busy_lock;
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};
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struct asrc_data {
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struct asrc_pair asrc_pair[3];
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};
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extern int asrc_req_pair(int chn_num, enum asrc_pair_index *index);
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extern void asrc_release_pair(enum asrc_pair_index index);
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extern int asrc_config_pair(struct asrc_config *config);
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extern void asrc_get_status(struct asrc_status_flags *flags);
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extern void asrc_start_conv(enum asrc_pair_index index);
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extern void asrc_stop_conv(enum asrc_pair_index index);
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#endif /* __kERNEL__ */
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#endif /* __MXC_ASRC_H__ */
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