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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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c1df29648f
Add tdm slots operation support. If tdm slots and slot width have been configured in machine driver, we should use these values. Otherwise, using relevant channels and word length to set slots and slot width. SAI will generate BCLK depends on sample rate, slots and slot width. And there may be unused BCLK cycles before each LRCLK transition. Signed-off-by: Zidan Wang <zidan.wang@freescale.com> Acked-by: Nicolin Chen <nicoleotsuka@gmail.com> Signed-off-by: Mark Brown <broonie@kernel.org>
156 lines
5.1 KiB
C
156 lines
5.1 KiB
C
/*
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* Copyright 2012-2013 Freescale Semiconductor, Inc.
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License version 2 as
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* published by the Free Software Foundation.
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*/
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#ifndef __FSL_SAI_H
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#define __FSL_SAI_H
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#include <sound/dmaengine_pcm.h>
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#define FSL_SAI_FORMATS (SNDRV_PCM_FMTBIT_S16_LE |\
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SNDRV_PCM_FMTBIT_S20_3LE |\
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SNDRV_PCM_FMTBIT_S24_LE |\
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SNDRV_PCM_FMTBIT_S32_LE)
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/* SAI Register Map Register */
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#define FSL_SAI_TCSR 0x00 /* SAI Transmit Control */
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#define FSL_SAI_TCR1 0x04 /* SAI Transmit Configuration 1 */
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#define FSL_SAI_TCR2 0x08 /* SAI Transmit Configuration 2 */
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#define FSL_SAI_TCR3 0x0c /* SAI Transmit Configuration 3 */
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#define FSL_SAI_TCR4 0x10 /* SAI Transmit Configuration 4 */
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#define FSL_SAI_TCR5 0x14 /* SAI Transmit Configuration 5 */
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#define FSL_SAI_TDR 0x20 /* SAI Transmit Data */
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#define FSL_SAI_TFR 0x40 /* SAI Transmit FIFO */
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#define FSL_SAI_TMR 0x60 /* SAI Transmit Mask */
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#define FSL_SAI_RCSR 0x80 /* SAI Receive Control */
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#define FSL_SAI_RCR1 0x84 /* SAI Receive Configuration 1 */
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#define FSL_SAI_RCR2 0x88 /* SAI Receive Configuration 2 */
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#define FSL_SAI_RCR3 0x8c /* SAI Receive Configuration 3 */
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#define FSL_SAI_RCR4 0x90 /* SAI Receive Configuration 4 */
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#define FSL_SAI_RCR5 0x94 /* SAI Receive Configuration 5 */
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#define FSL_SAI_RDR 0xa0 /* SAI Receive Data */
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#define FSL_SAI_RFR 0xc0 /* SAI Receive FIFO */
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#define FSL_SAI_RMR 0xe0 /* SAI Receive Mask */
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#define FSL_SAI_xCSR(tx) (tx ? FSL_SAI_TCSR : FSL_SAI_RCSR)
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#define FSL_SAI_xCR1(tx) (tx ? FSL_SAI_TCR1 : FSL_SAI_RCR1)
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#define FSL_SAI_xCR2(tx) (tx ? FSL_SAI_TCR2 : FSL_SAI_RCR2)
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#define FSL_SAI_xCR3(tx) (tx ? FSL_SAI_TCR3 : FSL_SAI_RCR3)
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#define FSL_SAI_xCR4(tx) (tx ? FSL_SAI_TCR4 : FSL_SAI_RCR4)
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#define FSL_SAI_xCR5(tx) (tx ? FSL_SAI_TCR5 : FSL_SAI_RCR5)
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#define FSL_SAI_xDR(tx) (tx ? FSL_SAI_TDR : FSL_SAI_RDR)
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#define FSL_SAI_xFR(tx) (tx ? FSL_SAI_TFR : FSL_SAI_RFR)
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#define FSL_SAI_xMR(tx) (tx ? FSL_SAI_TMR : FSL_SAI_RMR)
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/* SAI Transmit/Receive Control Register */
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#define FSL_SAI_CSR_TERE BIT(31)
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#define FSL_SAI_CSR_FR BIT(25)
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#define FSL_SAI_CSR_SR BIT(24)
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#define FSL_SAI_CSR_xF_SHIFT 16
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#define FSL_SAI_CSR_xF_W_SHIFT 18
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#define FSL_SAI_CSR_xF_MASK (0x1f << FSL_SAI_CSR_xF_SHIFT)
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#define FSL_SAI_CSR_xF_W_MASK (0x7 << FSL_SAI_CSR_xF_W_SHIFT)
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#define FSL_SAI_CSR_WSF BIT(20)
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#define FSL_SAI_CSR_SEF BIT(19)
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#define FSL_SAI_CSR_FEF BIT(18)
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#define FSL_SAI_CSR_FWF BIT(17)
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#define FSL_SAI_CSR_FRF BIT(16)
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#define FSL_SAI_CSR_xIE_SHIFT 8
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#define FSL_SAI_CSR_xIE_MASK (0x1f << FSL_SAI_CSR_xIE_SHIFT)
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#define FSL_SAI_CSR_WSIE BIT(12)
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#define FSL_SAI_CSR_SEIE BIT(11)
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#define FSL_SAI_CSR_FEIE BIT(10)
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#define FSL_SAI_CSR_FWIE BIT(9)
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#define FSL_SAI_CSR_FRIE BIT(8)
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#define FSL_SAI_CSR_FRDE BIT(0)
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/* SAI Transmit and Receive Configuration 1 Register */
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#define FSL_SAI_CR1_RFW_MASK 0x1f
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/* SAI Transmit and Receive Configuration 2 Register */
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#define FSL_SAI_CR2_SYNC BIT(30)
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#define FSL_SAI_CR2_MSEL_MASK (0x3 << 26)
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#define FSL_SAI_CR2_MSEL_BUS 0
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#define FSL_SAI_CR2_MSEL_MCLK1 BIT(26)
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#define FSL_SAI_CR2_MSEL_MCLK2 BIT(27)
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#define FSL_SAI_CR2_MSEL_MCLK3 (BIT(26) | BIT(27))
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#define FSL_SAI_CR2_MSEL(ID) ((ID) << 26)
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#define FSL_SAI_CR2_BCP BIT(25)
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#define FSL_SAI_CR2_BCD_MSTR BIT(24)
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#define FSL_SAI_CR2_DIV_MASK 0xff
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/* SAI Transmit and Receive Configuration 3 Register */
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#define FSL_SAI_CR3_TRCE BIT(16)
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#define FSL_SAI_CR3_WDFL(x) (x)
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#define FSL_SAI_CR3_WDFL_MASK 0x1f
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/* SAI Transmit and Receive Configuration 4 Register */
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#define FSL_SAI_CR4_FRSZ(x) (((x) - 1) << 16)
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#define FSL_SAI_CR4_FRSZ_MASK (0x1f << 16)
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#define FSL_SAI_CR4_SYWD(x) (((x) - 1) << 8)
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#define FSL_SAI_CR4_SYWD_MASK (0x1f << 8)
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#define FSL_SAI_CR4_MF BIT(4)
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#define FSL_SAI_CR4_FSE BIT(3)
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#define FSL_SAI_CR4_FSP BIT(1)
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#define FSL_SAI_CR4_FSD_MSTR BIT(0)
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/* SAI Transmit and Receive Configuration 5 Register */
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#define FSL_SAI_CR5_WNW(x) (((x) - 1) << 24)
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#define FSL_SAI_CR5_WNW_MASK (0x1f << 24)
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#define FSL_SAI_CR5_W0W(x) (((x) - 1) << 16)
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#define FSL_SAI_CR5_W0W_MASK (0x1f << 16)
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#define FSL_SAI_CR5_FBT(x) ((x) << 8)
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#define FSL_SAI_CR5_FBT_MASK (0x1f << 8)
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/* SAI type */
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#define FSL_SAI_DMA BIT(0)
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#define FSL_SAI_USE_AC97 BIT(1)
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#define FSL_SAI_NET BIT(2)
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#define FSL_SAI_TRA_SYN BIT(3)
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#define FSL_SAI_REC_SYN BIT(4)
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#define FSL_SAI_USE_I2S_SLAVE BIT(5)
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#define FSL_FMT_TRANSMITTER 0
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#define FSL_FMT_RECEIVER 1
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/* SAI clock sources */
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#define FSL_SAI_CLK_BUS 0
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#define FSL_SAI_CLK_MAST1 1
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#define FSL_SAI_CLK_MAST2 2
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#define FSL_SAI_CLK_MAST3 3
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#define FSL_SAI_MCLK_MAX 4
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/* SAI data transfer numbers per DMA request */
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#define FSL_SAI_MAXBURST_TX 6
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#define FSL_SAI_MAXBURST_RX 6
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struct fsl_sai {
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struct platform_device *pdev;
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struct regmap *regmap;
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struct clk *bus_clk;
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struct clk *mclk_clk[FSL_SAI_MCLK_MAX];
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bool is_slave_mode;
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bool is_lsb_first;
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bool is_dsp_mode;
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bool sai_on_imx;
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bool synchronous[2];
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unsigned int mclk_id[2];
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unsigned int mclk_streams;
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unsigned int slots;
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unsigned int slot_width;
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struct snd_dmaengine_dai_dma_data dma_params_rx;
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struct snd_dmaengine_dai_dma_data dma_params_tx;
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};
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#define TX 1
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#define RX 0
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#endif /* __FSL_SAI_H */
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