ASoC: Add TXx9 AC link controller driver (v3)
This patch adds support for the integrated ACLC of the TXx9 family.
Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/txx9/txx9aclc.h b/sound/soc/txx9/txx9aclc.h
new file mode 100644
index 0000000..6769aab
--- /dev/null
+++ b/sound/soc/txx9/txx9aclc.h
@@ -0,0 +1,83 @@
+/*
+ * TXx9 SoC AC Link Controller
+ *
+ * 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 __TXX9ACLC_H
+#define __TXX9ACLC_H
+
+#include <linux/interrupt.h>
+#include <asm/txx9/dmac.h>
+
+#define ACCTLEN 0x00 /* control enable */
+#define ACCTLDIS 0x04 /* control disable */
+#define ACCTL_ENLINK 0x00000001 /* enable/disable AC-link */
+#define ACCTL_AUDODMA 0x00000100 /* AUDODMA enable/disable */
+#define ACCTL_AUDIDMA 0x00001000 /* AUDIDMA enable/disable */
+#define ACCTL_AUDOEHLT 0x00010000 /* AUDO error halt
+ enable/disable */
+#define ACCTL_AUDIEHLT 0x00100000 /* AUDI error halt
+ enable/disable */
+#define ACREGACC 0x08 /* codec register access */
+#define ACREGACC_DAT_SHIFT 0 /* data field */
+#define ACREGACC_REG_SHIFT 16 /* address field */
+#define ACREGACC_CODECID_SHIFT 24 /* CODEC ID field */
+#define ACREGACC_READ 0x80000000 /* CODEC read */
+#define ACREGACC_WRITE 0x00000000 /* CODEC write */
+#define ACINTSTS 0x10 /* interrupt status */
+#define ACINTMSTS 0x14 /* interrupt masked status */
+#define ACINTEN 0x18 /* interrupt enable */
+#define ACINTDIS 0x1c /* interrupt disable */
+#define ACINT_CODECRDY(n) (0x00000001 << (n)) /* CODECn ready */
+#define ACINT_REGACCRDY 0x00000010 /* ACREGACC ready */
+#define ACINT_AUDOERR 0x00000100 /* AUDO underrun error */
+#define ACINT_AUDIERR 0x00001000 /* AUDI overrun error */
+#define ACDMASTS 0x80 /* DMA request status */
+#define ACDMA_AUDO 0x00000001 /* AUDODMA pending */
+#define ACDMA_AUDI 0x00000010 /* AUDIDMA pending */
+#define ACAUDODAT 0xa0 /* audio out data */
+#define ACAUDIDAT 0xb0 /* audio in data */
+#define ACREVID 0xfc /* revision ID */
+
+struct txx9aclc_dmadata {
+ struct resource *dma_res;
+ struct txx9dmac_slave dma_slave;
+ struct dma_chan *dma_chan;
+ struct tasklet_struct tasklet;
+ spinlock_t dma_lock;
+ int stream; /* SNDRV_PCM_STREAM_PLAYBACK or SNDRV_PCM_STREAM_CAPTURE */
+ struct snd_pcm_substream *substream;
+ unsigned long pos;
+ dma_addr_t dma_addr;
+ unsigned long buffer_bytes;
+ unsigned long period_bytes;
+ unsigned long frag_bytes;
+ int frags;
+ int frag_count;
+ int dmacount;
+};
+
+struct txx9aclc_plat_drvdata {
+ void __iomem *base;
+ u64 physbase;
+};
+
+struct txx9aclc_soc_device {
+ struct snd_soc_device soc_dev;
+ struct platform_device *aclc_pdev; /* for ioresources, drvdata */
+ struct txx9aclc_dmadata dmadata[2];
+};
+
+static inline struct txx9aclc_plat_drvdata *txx9aclc_get_plat_drvdata(
+ struct txx9aclc_soc_device *sdev)
+{
+ return platform_get_drvdata(sdev->aclc_pdev);
+}
+
+extern struct snd_soc_platform txx9aclc_soc_platform;
+extern struct snd_soc_dai txx9aclc_ac97_dai;
+
+#endif /* __TXX9ACLC_H */