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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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2.6 kB · 92 lines
C
at master
123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293/* SPDX-License-Identifier: GPL-2.0-only *//* * TI DaVinci Audio Serial Port support * * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/ */
#ifndef __DAVINCI_ASP_H#define __DAVINCI_ASP_H
#include <linux/genalloc.h>
struct davinci_mcasp_pdata { u32 tx_dma_offset; u32 rx_dma_offset; int asp_chan_q; /* event queue number for ASP channel */ int ram_chan_q; /* event queue number for RAM channel */ /* * Allowing this is more efficient and eliminates left and right swaps * caused by underruns, but will swap the left and right channels * when compared to previous behavior. */ unsigned enable_channel_combine:1; unsigned sram_size_playback; unsigned sram_size_capture; struct gen_pool *sram_pool;
/* * This flag works when both clock and FS are outputs for the cpu * and makes clock more accurate (FS is not symmetrical and the * clock is very fast. * The clock becoming faster is named * i2s continuous serial clock (I2S_SCK) and it is an externally * visible bit clock. * * first line : WordSelect * second line : ContinuousSerialClock * third line: SerialData * * SYMMETRICAL APPROACH: * _______________________ LEFT * _| RIGHT |______________________| * _ _ _ _ _ _ _ _ * _| |_| |_ x16 _| |_| |_| |_| |_ x16 _| |_| |_ * _ _ _ _ _ _ _ _ * _/ \_/ \_ ... _/ \_/ \_/ \_/ \_ ... _/ \_/ \_ * \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/ * * ACCURATE CLOCK APPROACH: * ______________ LEFT * _| RIGHT |_______________________________| * _ _ _ _ _ _ _ _ _ * _| |_ x16 _| |_| |_ x16 _| |_| |_| |_| |_| |_| | * _ _ _ _ dummy cycles * _/ \_ ... _/ \_/ \_ ... _/ \__________________ * \_/ \_/ \_/ \_/ * */ bool i2s_accurate_sck;
/* McASP specific fields */ int tdm_slots_tx; int tdm_slots_rx; u8 op_mode; u8 dismod; u8 num_serializer; u8 *serial_dir; u8 version; u8 txnumevt; u8 rxnumevt; int tx_dma_channel; int rx_dma_channel;};/* TODO: Fix arch/arm/mach-davinci/ users and remove this define */#define snd_platform_data davinci_mcasp_pdata
enum { MCASP_VERSION_1 = 0, /* DM646x */ MCASP_VERSION_2, /* DA8xx/OMAPL1x */ MCASP_VERSION_3, /* TI81xx/AM33xx */ MCASP_VERSION_4, /* DRA7xxx */ MCASP_VERSION_OMAP, /* OMAP4/5 */};
#define INACTIVE_MODE 0#define TX_MODE 1#define RX_MODE 2
#define DAVINCI_MCASP_IIS_MODE 0#define DAVINCI_MCASP_DIT_MODE 1
#endif