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/*
* Copyright 2008-2013 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_CONVERT _IOW(ASRC_IOC_MAGIC, 3, struct asrc_convert_buffer)
#define ASRC_START_CONV _IOW(ASRC_IOC_MAGIC, 4, enum asrc_pair_index)
#define ASRC_STOP_CONV _IOW(ASRC_IOC_MAGIC, 5, enum asrc_pair_index)
#define ASRC_STATUS _IOW(ASRC_IOC_MAGIC, 6, struct asrc_status_flags)
#define ASRC_FLUSH _IOW(ASRC_IOC_MAGIC, 7, enum asrc_pair_index)
enum asrc_pair_index {
ASRC_UNVALID_PAIR = -1,
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,
};
enum asrc_word_width {
ASRC_WIDTH_24_BIT = 0,
ASRC_WIDTH_16_BIT = 1,
ASRC_WIDTH_8_BIT = 2,
};
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;
enum asrc_word_width input_word_width;
enum asrc_word_width output_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_convert_buffer {
void *input_buffer_vaddr;
void *output_buffer_vaddr;
unsigned int input_buffer_length;
unsigned int output_buffer_length;
};
struct asrc_buffer {
unsigned int index;
unsigned int length;
unsigned int output_last_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__
#include <linux/scatterlist.h>
#define ASRC_DMA_BUFFER_NUM 2
#define ASRC_INPUTFIFO_THRESHOLD 32
#define ASRC_OUTPUTFIFO_THRESHOLD 32
#define ASRC_DMA_BUFFER_SIZE (1024 * 48 * 4)
#define ASRC_MAX_BUFFER_SIZE (1024 * 48)
#define ASRC_OUTPUT_LAST_SAMPLE 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
#define ASRC_ASRMCRA_REG 0xA0
#define ASRC_ASRFSTA_REG 0xA4
#define ASRC_ASRMCRB_REG 0xA8
#define ASRC_ASRFSTB_REG 0xAC
#define ASRC_ASRMCRC_REG 0xB0
#define ASRC_ASRFSTC_REG 0xB4
#define ASRC_ASRMCR1A_REG 0xC0
#define ASRC_ASRMCR1B_REG 0xC4
#define ASRC_ASRMCR1C_REG 0xC8
#define ASRC_ASRFSTX_INPUT_FIFO_WIDTH 7
#define ASRC_ASRFSTX_INPUT_FIFO_OFFSET 0
#define ASRC_ASRFSTX_INPUT_FIFO_MASK 0x7F
#define ASRC_ASRFSTX_OUTPUT_FIFO_WIDTH 7
#define ASRC_ASRFSTX_OUTPUT_FIFO_OFFSET 12
#define ASRC_ASRFSTX_OUTPUT_FIFO_MASK (0x7F << ASRC_ASRFSTX_OUTPUT_FIFO_OFFSET)
struct dma_block {
unsigned int index;
unsigned int length;
void *dma_vaddr;
dma_addr_t dma_paddr;
struct list_head queue;
};
struct asrc_p2p_params {
u32 p2p_rate;/* ASRC output rate for p2p */
enum asrc_word_width p2p_width;/* ASRC output wordwidth for p2p */
};
struct asrc_pair_params {
enum asrc_pair_index index;
wait_queue_head_t input_wait_queue;
wait_queue_head_t output_wait_queue;
unsigned int input_counter;
unsigned int output_counter;
struct dma_chan *input_dma_channel;
struct dma_chan *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;
unsigned int channel_nums;
struct dma_block input_dma_total;
struct dma_block input_dma[ASRC_DMA_BUFFER_NUM];
struct dma_block output_dma_total;
struct dma_block output_dma[ASRC_DMA_BUFFER_NUM];
struct dma_block output_last_period;
struct dma_async_tx_descriptor *desc_in;
struct dma_async_tx_descriptor *desc_out;
struct work_struct task_output_work;
unsigned int input_sg_nodes;
unsigned int output_sg_nodes;
struct scatterlist input_sg[4], output_sg[4];
enum asrc_word_width input_word_width;
enum asrc_word_width output_word_width;
u32 input_sample_rate;
u32 output_sample_rate;
u32 input_wm;
u32 output_wm;
};
struct asrc_data {
struct asrc_pair asrc_pair[3];
struct proc_dir_entry *proc_asrc;
unsigned long vaddr;
unsigned long paddr;
int dmarx[3];
int dmatx[3];
struct class *asrc_class;
int asrc_major;
struct imx_asrc_platform_data *mxc_asrc_data;
struct device *dev;
};
struct asrc_p2p_ops {
void (*asrc_p2p_start_conv)(enum asrc_pair_index);
void (*asrc_p2p_stop_conv)(enum asrc_pair_index);
int (*asrc_p2p_get_dma_request)(enum asrc_pair_index, bool);
u32 (*asrc_p2p_per_addr)(enum asrc_pair_index, bool);
int (*asrc_p2p_req_pair)(int, enum asrc_pair_index *index);
int (*asrc_p2p_config_pair)(struct asrc_config *config);
void (*asrc_p2p_release_pair)(enum asrc_pair_index);
void (*asrc_p2p_finish_conv)(enum asrc_pair_index);
};
extern void asrc_p2p_hook(struct asrc_p2p_ops *asrc_p2p_ct);
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);
extern u32 asrc_get_per_addr(enum asrc_pair_index index, bool i);
extern int asrc_get_dma_request(enum asrc_pair_index index, bool i);
extern void asrc_finish_conv(enum asrc_pair_index index);
extern int asrc_set_watermark(enum asrc_pair_index index,
u32 in_wm, u32 out_wm);
#endif /* __kERNEL__ */
#endif /* __MXC_ASRC_H__ */
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