/* * Copyright 2008-2012 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 2 #define ASRC_INPUTFIFO_THRESHOLD 32 #define ASRC_OUTPUTFIFO_THRESHOLD 32 #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 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; 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 semaphore busy_lock; struct dma_async_tx_descriptor *desc_in; struct dma_async_tx_descriptor *desc_out; }; 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; }; 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); #endif /* __kERNEL__ */ #endif /* __MXC_ASRC_H__ */