ASoC: Add a new imx-ssi sound driver
The old driver has the number of SSI units in the system hardcoded,
does not make use of the device model and works only on i.MX21/27.
This driver replaces it. It works in DMA mode on i.MX21/27 and using
an FIQ handler on other systems. It also supports AC97 mode of
the SSI units.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Javier Martin <javier.martin@vista-silicon.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/imx/imx-ssi.h b/sound/soc/imx/imx-ssi.h
new file mode 100644
index 0000000..cb2c81f
--- /dev/null
+++ b/sound/soc/imx/imx-ssi.h
@@ -0,0 +1,238 @@
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#ifndef _IMX_SSI_H
+#define _IMX_SSI_H
+
+#define SSI_STX0 0x00
+#define SSI_STX1 0x04
+#define SSI_SRX0 0x08
+#define SSI_SRX1 0x0c
+
+#define SSI_SCR 0x10
+#define SSI_SCR_CLK_IST (1 << 9)
+#define SSI_SCR_CLK_IST_SHIFT 9
+#define SSI_SCR_TCH_EN (1 << 8)
+#define SSI_SCR_SYS_CLK_EN (1 << 7)
+#define SSI_SCR_I2S_MODE_NORM (0 << 5)
+#define SSI_SCR_I2S_MODE_MSTR (1 << 5)
+#define SSI_SCR_I2S_MODE_SLAVE (2 << 5)
+#define SSI_I2S_MODE_MASK (3 << 5)
+#define SSI_SCR_SYN (1 << 4)
+#define SSI_SCR_NET (1 << 3)
+#define SSI_SCR_RE (1 << 2)
+#define SSI_SCR_TE (1 << 1)
+#define SSI_SCR_SSIEN (1 << 0)
+
+#define SSI_SISR 0x14
+#define SSI_SISR_MASK ((1 << 19) - 1)
+#define SSI_SISR_CMDAU (1 << 18)
+#define SSI_SISR_CMDDU (1 << 17)
+#define SSI_SISR_RXT (1 << 16)
+#define SSI_SISR_RDR1 (1 << 15)
+#define SSI_SISR_RDR0 (1 << 14)
+#define SSI_SISR_TDE1 (1 << 13)
+#define SSI_SISR_TDE0 (1 << 12)
+#define SSI_SISR_ROE1 (1 << 11)
+#define SSI_SISR_ROE0 (1 << 10)
+#define SSI_SISR_TUE1 (1 << 9)
+#define SSI_SISR_TUE0 (1 << 8)
+#define SSI_SISR_TFS (1 << 7)
+#define SSI_SISR_RFS (1 << 6)
+#define SSI_SISR_TLS (1 << 5)
+#define SSI_SISR_RLS (1 << 4)
+#define SSI_SISR_RFF1 (1 << 3)
+#define SSI_SISR_RFF0 (1 << 2)
+#define SSI_SISR_TFE1 (1 << 1)
+#define SSI_SISR_TFE0 (1 << 0)
+
+#define SSI_SIER 0x18
+#define SSI_SIER_RDMAE (1 << 22)
+#define SSI_SIER_RIE (1 << 21)
+#define SSI_SIER_TDMAE (1 << 20)
+#define SSI_SIER_TIE (1 << 19)
+#define SSI_SIER_CMDAU_EN (1 << 18)
+#define SSI_SIER_CMDDU_EN (1 << 17)
+#define SSI_SIER_RXT_EN (1 << 16)
+#define SSI_SIER_RDR1_EN (1 << 15)
+#define SSI_SIER_RDR0_EN (1 << 14)
+#define SSI_SIER_TDE1_EN (1 << 13)
+#define SSI_SIER_TDE0_EN (1 << 12)
+#define SSI_SIER_ROE1_EN (1 << 11)
+#define SSI_SIER_ROE0_EN (1 << 10)
+#define SSI_SIER_TUE1_EN (1 << 9)
+#define SSI_SIER_TUE0_EN (1 << 8)
+#define SSI_SIER_TFS_EN (1 << 7)
+#define SSI_SIER_RFS_EN (1 << 6)
+#define SSI_SIER_TLS_EN (1 << 5)
+#define SSI_SIER_RLS_EN (1 << 4)
+#define SSI_SIER_RFF1_EN (1 << 3)
+#define SSI_SIER_RFF0_EN (1 << 2)
+#define SSI_SIER_TFE1_EN (1 << 1)
+#define SSI_SIER_TFE0_EN (1 << 0)
+
+#define SSI_STCR 0x1c
+#define SSI_STCR_TXBIT0 (1 << 9)
+#define SSI_STCR_TFEN1 (1 << 8)
+#define SSI_STCR_TFEN0 (1 << 7)
+#define SSI_FIFO_ENABLE_0_SHIFT 7
+#define SSI_STCR_TFDIR (1 << 6)
+#define SSI_STCR_TXDIR (1 << 5)
+#define SSI_STCR_TSHFD (1 << 4)
+#define SSI_STCR_TSCKP (1 << 3)
+#define SSI_STCR_TFSI (1 << 2)
+#define SSI_STCR_TFSL (1 << 1)
+#define SSI_STCR_TEFS (1 << 0)
+
+#define SSI_SRCR 0x20
+#define SSI_SRCR_RXBIT0 (1 << 9)
+#define SSI_SRCR_RFEN1 (1 << 8)
+#define SSI_SRCR_RFEN0 (1 << 7)
+#define SSI_FIFO_ENABLE_0_SHIFT 7
+#define SSI_SRCR_RFDIR (1 << 6)
+#define SSI_SRCR_RXDIR (1 << 5)
+#define SSI_SRCR_RSHFD (1 << 4)
+#define SSI_SRCR_RSCKP (1 << 3)
+#define SSI_SRCR_RFSI (1 << 2)
+#define SSI_SRCR_RFSL (1 << 1)
+#define SSI_SRCR_REFS (1 << 0)
+
+#define SSI_SRCCR 0x28
+#define SSI_SRCCR_DIV2 (1 << 18)
+#define SSI_SRCCR_PSR (1 << 17)
+#define SSI_SRCCR_WL(x) ((((x) - 2) >> 1) << 13)
+#define SSI_SRCCR_DC(x) (((x) & 0x1f) << 8)
+#define SSI_SRCCR_PM(x) (((x) & 0xff) << 0)
+#define SSI_SRCCR_WL_MASK (0xf << 13)
+#define SSI_SRCCR_DC_MASK (0x1f << 8)
+#define SSI_SRCCR_PM_MASK (0xff << 0)
+
+#define SSI_STCCR 0x24
+#define SSI_STCCR_DIV2 (1 << 18)
+#define SSI_STCCR_PSR (1 << 17)
+#define SSI_STCCR_WL(x) ((((x) - 2) >> 1) << 13)
+#define SSI_STCCR_DC(x) (((x) & 0x1f) << 8)
+#define SSI_STCCR_PM(x) (((x) & 0xff) << 0)
+#define SSI_STCCR_WL_MASK (0xf << 13)
+#define SSI_STCCR_DC_MASK (0x1f << 8)
+#define SSI_STCCR_PM_MASK (0xff << 0)
+
+#define SSI_SFCSR 0x2c
+#define SSI_SFCSR_RFCNT1(x) (((x) & 0xf) << 28)
+#define SSI_RX_FIFO_1_COUNT_SHIFT 28
+#define SSI_SFCSR_TFCNT1(x) (((x) & 0xf) << 24)
+#define SSI_TX_FIFO_1_COUNT_SHIFT 24
+#define SSI_SFCSR_RFWM1(x) (((x) & 0xf) << 20)
+#define SSI_SFCSR_TFWM1(x) (((x) & 0xf) << 16)
+#define SSI_SFCSR_RFCNT0(x) (((x) & 0xf) << 12)
+#define SSI_RX_FIFO_0_COUNT_SHIFT 12
+#define SSI_SFCSR_TFCNT0(x) (((x) & 0xf) << 8)
+#define SSI_TX_FIFO_0_COUNT_SHIFT 8
+#define SSI_SFCSR_RFWM0(x) (((x) & 0xf) << 4)
+#define SSI_SFCSR_TFWM0(x) (((x) & 0xf) << 0)
+#define SSI_SFCSR_RFWM0_MASK (0xf << 4)
+#define SSI_SFCSR_TFWM0_MASK (0xf << 0)
+
+#define SSI_STR 0x30
+#define SSI_STR_TEST (1 << 15)
+#define SSI_STR_RCK2TCK (1 << 14)
+#define SSI_STR_RFS2TFS (1 << 13)
+#define SSI_STR_RXSTATE(x) (((x) & 0xf) << 8)
+#define SSI_STR_TXD2RXD (1 << 7)
+#define SSI_STR_TCK2RCK (1 << 6)
+#define SSI_STR_TFS2RFS (1 << 5)
+#define SSI_STR_TXSTATE(x) (((x) & 0xf) << 0)
+
+#define SSI_SOR 0x34
+#define SSI_SOR_CLKOFF (1 << 6)
+#define SSI_SOR_RX_CLR (1 << 5)
+#define SSI_SOR_TX_CLR (1 << 4)
+#define SSI_SOR_INIT (1 << 3)
+#define SSI_SOR_WAIT(x) (((x) & 0x3) << 1)
+#define SSI_SOR_WAIT_MASK (0x3 << 1)
+#define SSI_SOR_SYNRST (1 << 0)
+
+#define SSI_SACNT 0x38
+#define SSI_SACNT_FRDIV(x) (((x) & 0x3f) << 5)
+#define SSI_SACNT_WR (1 << 4)
+#define SSI_SACNT_RD (1 << 3)
+#define SSI_SACNT_TIF (1 << 2)
+#define SSI_SACNT_FV (1 << 1)
+#define SSI_SACNT_AC97EN (1 << 0)
+
+#define SSI_SACADD 0x3c
+#define SSI_SACDAT 0x40
+#define SSI_SATAG 0x44
+#define SSI_STMSK 0x48
+#define SSI_SRMSK 0x4c
+#define SSI_SACCST 0x50
+#define SSI_SACCEN 0x54
+#define SSI_SACCDIS 0x58
+
+/* SSI clock sources */
+#define IMX_SSP_SYS_CLK 0
+
+/* SSI audio dividers */
+#define IMX_SSI_TX_DIV_2 0
+#define IMX_SSI_TX_DIV_PSR 1
+#define IMX_SSI_TX_DIV_PM 2
+#define IMX_SSI_RX_DIV_2 3
+#define IMX_SSI_RX_DIV_PSR 4
+#define IMX_SSI_RX_DIV_PM 5
+
+extern struct snd_soc_dai *imx_ssi_pcm_dai[2];
+extern struct snd_soc_platform imx_soc_platform;
+
+#define DRV_NAME "imx-ssi"
+
+struct imx_pcm_dma_params {
+ int dma;
+ unsigned long dma_addr;
+ int burstsize;
+};
+
+struct imx_ssi {
+ struct snd_soc_dai dai;
+ struct platform_device *ac97_dev;
+
+ struct snd_soc_device imx_ac97;
+ struct clk *clk;
+ void __iomem *base;
+ int irq;
+ int fiq_enable;
+ unsigned int offset;
+
+ unsigned int flags;
+
+ void (*ac97_reset) (struct snd_ac97 *ac97);
+ void (*ac97_warm_reset)(struct snd_ac97 *ac97);
+
+ struct imx_pcm_dma_params dma_params_rx;
+ struct imx_pcm_dma_params dma_params_tx;
+
+ int enabled;
+};
+
+struct snd_soc_platform *imx_ssi_fiq_init(struct platform_device *pdev,
+ struct imx_ssi *ssi);
+void imx_ssi_fiq_exit(struct platform_device *pdev, struct imx_ssi *ssi);
+struct snd_soc_platform *imx_ssi_dma_mx2_init(struct platform_device *pdev,
+ struct imx_ssi *ssi);
+
+int snd_imx_pcm_mmap(struct snd_pcm_substream *substream, struct vm_area_struct *vma);
+int imx_pcm_new(struct snd_card *card, struct snd_soc_dai *dai,
+ struct snd_pcm *pcm);
+void imx_pcm_free(struct snd_pcm *pcm);
+
+/*
+ * Do not change this as the FIQ handler depends on this size
+ */
+#define IMX_SSI_DMABUF_SIZE (64 * 1024)
+
+#define DMA_RXFIFO_BURST 0x4
+#define DMA_TXFIFO_BURST 0x6
+
+#endif /* _IMX_SSI_H */