diff options
Diffstat (limited to 'include/linux/mxc_asrc.h')
| -rw-r--r-- | include/linux/mxc_asrc.h | 298 |
1 files changed, 298 insertions, 0 deletions
diff --git a/include/linux/mxc_asrc.h b/include/linux/mxc_asrc.h new file mode 100644 index 00000000..8de07b92 --- /dev/null +++ b/include/linux/mxc_asrc.h @@ -0,0 +1,298 @@ +/* + * 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 +}; + +#define ASRC_PAIR_MAX_NUM (ASRC_PAIR_C + 1) + +enum asrc_inclk { + INCLK_NONE = 0x03, + INCLK_ESAI_RX = 0x00, + INCLK_SSI1_RX = 0x01, + INCLK_SSI2_RX = 0x02, + INCLK_SSI3_RX = 0x07, + INCLK_SPDIF_RX = 0x04, + INCLK_MLB_CLK = 0x05, + INCLK_PAD = 0x06, + INCLK_ESAI_TX = 0x08, + INCLK_SSI1_TX = 0x09, + INCLK_SSI2_TX = 0x0a, + INCLK_SSI3_TX = 0x0b, + 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_SSI3_TX = 0x07, + OUTCLK_SPDIF_TX = 0x04, + OUTCLK_MLB_CLK = 0x05, + OUTCLK_PAD = 0x06, + OUTCLK_ESAI_RX = 0x08, + OUTCLK_SSI1_RX = 0x09, + OUTCLK_SSI2_RX = 0x0a, + OUTCLK_SSI3_RX = 0x0b, + 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__ */ |