bc18454985
If the dismod is specified in the DT node, use the specified custom value to configure the drive on state of the inactive TX slots. If the dismod is not present or booted in legacy mode, the dismod is set to low as it was the original behavior. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Signed-off-by: Mark Brown <broonie@kernel.org>
114 lines
3.2 KiB
C
114 lines
3.2 KiB
C
/*
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* TI DaVinci Audio Serial Port support
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*
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* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation version 2.
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*
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* This program is distributed "as is" WITHOUT ANY WARRANTY of any
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* kind, whether express or implied; without even the implied warranty
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* of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*/
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#ifndef __DAVINCI_ASP_H
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#define __DAVINCI_ASP_H
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#include <linux/genalloc.h>
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struct davinci_mcasp_pdata {
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u32 tx_dma_offset;
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u32 rx_dma_offset;
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int asp_chan_q; /* event queue number for ASP channel */
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int ram_chan_q; /* event queue number for RAM channel */
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/*
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* Allowing this is more efficient and eliminates left and right swaps
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* caused by underruns, but will swap the left and right channels
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* when compared to previous behavior.
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*/
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unsigned enable_channel_combine:1;
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unsigned sram_size_playback;
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unsigned sram_size_capture;
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struct gen_pool *sram_pool;
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/*
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* If McBSP peripheral gets the clock from an external pin,
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* there are three chooses, that are MCBSP_CLKX, MCBSP_CLKR
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* and MCBSP_CLKS.
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* Depending on different hardware connections it is possible
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* to use this setting to change the behaviour of McBSP
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* driver.
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*/
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int clk_input_pin;
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/*
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* This flag works when both clock and FS are outputs for the cpu
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* and makes clock more accurate (FS is not symmetrical and the
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* clock is very fast.
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* The clock becoming faster is named
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* i2s continuous serial clock (I2S_SCK) and it is an externally
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* visible bit clock.
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*
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* first line : WordSelect
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* second line : ContinuousSerialClock
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* third line: SerialData
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*
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* SYMMETRICAL APPROACH:
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* _______________________ LEFT
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* _| RIGHT |______________________|
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* _ _ _ _ _ _ _ _
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* _| |_| |_ x16 _| |_| |_| |_| |_ x16 _| |_| |_
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* _ _ _ _ _ _ _ _
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* _/ \_/ \_ ... _/ \_/ \_/ \_/ \_ ... _/ \_/ \_
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* \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/
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*
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* ACCURATE CLOCK APPROACH:
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* ______________ LEFT
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* _| RIGHT |_______________________________|
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* _ _ _ _ _ _ _ _ _
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* _| |_ x16 _| |_| |_ x16 _| |_| |_| |_| |_| |_| |
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* _ _ _ _ dummy cycles
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* _/ \_ ... _/ \_/ \_ ... _/ \__________________
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* \_/ \_/ \_/ \_/
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*
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*/
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bool i2s_accurate_sck;
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/* McASP specific fields */
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int tdm_slots;
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u8 op_mode;
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u8 dismod;
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u8 num_serializer;
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u8 *serial_dir;
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u8 version;
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u8 txnumevt;
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u8 rxnumevt;
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int tx_dma_channel;
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int rx_dma_channel;
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};
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/* TODO: Fix arch/arm/mach-davinci/ users and remove this define */
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#define snd_platform_data davinci_mcasp_pdata
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enum {
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MCASP_VERSION_1 = 0, /* DM646x */
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MCASP_VERSION_2, /* DA8xx/OMAPL1x */
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MCASP_VERSION_3, /* TI81xx/AM33xx */
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MCASP_VERSION_4, /* DRA7xxx */
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};
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enum mcbsp_clk_input_pin {
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MCBSP_CLKR = 0, /* as in DM365 */
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MCBSP_CLKS,
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};
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#define INACTIVE_MODE 0
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#define TX_MODE 1
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#define RX_MODE 2
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#define DAVINCI_MCASP_IIS_MODE 0
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#define DAVINCI_MCASP_DIT_MODE 1
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#endif
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