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Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not write to the free software foundation inc 59 temple place suite 330 boston ma 02111 1307 usa extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 1334 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Reviewed-by: Richard Fontana <rfontana@redhat.com> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070033.113240726@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
64 lines
1.6 KiB
C
64 lines
1.6 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Copyright (ST) 2012 Rajeev Kumar (rajeevkumar.linux@gmail.com)
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*/
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#ifndef __SOUND_DESIGNWARE_I2S_H
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#define __SOUND_DESIGNWARE_I2S_H
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#include <linux/dmaengine.h>
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#include <linux/types.h>
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/*
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* struct i2s_clk_config_data - represent i2s clk configuration data
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* @chan_nr: number of channel
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* @data_width: number of bits per sample (8/16/24/32 bit)
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* @sample_rate: sampling frequency (8Khz, 16Khz, 32Khz, 44Khz, 48Khz)
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*/
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struct i2s_clk_config_data {
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int chan_nr;
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u32 data_width;
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u32 sample_rate;
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};
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struct i2s_platform_data {
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#define DWC_I2S_PLAY (1 << 0)
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#define DWC_I2S_RECORD (1 << 1)
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#define DW_I2S_SLAVE (1 << 2)
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#define DW_I2S_MASTER (1 << 3)
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unsigned int cap;
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int channel;
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u32 snd_fmts;
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u32 snd_rates;
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#define DW_I2S_QUIRK_COMP_REG_OFFSET (1 << 0)
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#define DW_I2S_QUIRK_COMP_PARAM1 (1 << 1)
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#define DW_I2S_QUIRK_16BIT_IDX_OVERRIDE (1 << 2)
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unsigned int quirks;
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unsigned int i2s_reg_comp1;
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unsigned int i2s_reg_comp2;
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void *play_dma_data;
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void *capture_dma_data;
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bool (*filter)(struct dma_chan *chan, void *slave);
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int (*i2s_clk_cfg)(struct i2s_clk_config_data *config);
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};
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struct i2s_dma_data {
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void *data;
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dma_addr_t addr;
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u32 max_burst;
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enum dma_slave_buswidth addr_width;
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bool (*filter)(struct dma_chan *chan, void *slave);
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};
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/* I2S DMA registers */
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#define I2S_RXDMA 0x01C0
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#define I2S_TXDMA 0x01C8
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#define TWO_CHANNEL_SUPPORT 2 /* up to 2.0 */
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#define FOUR_CHANNEL_SUPPORT 4 /* up to 3.1 */
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#define SIX_CHANNEL_SUPPORT 6 /* up to 5.1 */
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#define EIGHT_CHANNEL_SUPPORT 8 /* up to 7.1 */
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#endif /* __SOUND_DESIGNWARE_I2S_H */
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