ASoC: NUC900/audio: add nuc900 audio driver support

Add support for NUC900 AC97

Signed-off-by: Wan ZongShun <mcuos.com@gmail.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 121 insertions, 0 deletions

diff --git a/sound/soc/nuc900/nuc900-auido.h b/sound/soc/nuc900/nuc900-auido.h
new file mode 100644
index 000000000000..95ac4ef2f353
--- /dev/null
+++ b/sound/soc/nuc900/nuc900-auido.h
@@ -0,0 +1,121 @@
+/*
+ * Copyright (c) 2010 Nuvoton technology corporation.
+ *
+ * Wan ZongShun <mcuos.com@gmail.com>
+ *
+ * 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;version 2 of the License.
+ *
+ */
+
+#ifndef _NUC900_AUDIO_H
+#define _NUC900_AUDIO_H
+
+#include <linux/io.h>
+
+/* Audio Control Registers */
+#define ACTL_CON                0x00
+#define ACTL_RESET              0x04
+#define ACTL_RDSTB              0x08
+#define ACTL_RDST_LENGTH        0x0C
+#define ACTL_RDSTC              0x10
+#define ACTL_RSR                0x14
+#define ACTL_PDSTB              0x18
+#define ACTL_PDST_LENGTH        0x1C
+#define ACTL_PDSTC              0x20
+#define ACTL_PSR                0x24
+#define ACTL_IISCON             0x28
+#define ACTL_ACCON              0x2C
+#define ACTL_ACOS0              0x30
+#define ACTL_ACOS1              0x34
+#define ACTL_ACOS2              0x38
+#define ACTL_ACIS0              0x3C
+#define ACTL_ACIS1              0x40
+#define ACTL_ACIS2              0x44
+#define ACTL_COUNTER            0x48
+
+/* bit definition of REG_ACTL_CON register */
+#define R_DMA_IRQ               0x1000
+#define T_DMA_IRQ               0x0800
+#define IIS_AC_PIN_SEL          0x0100
+#define FIFO_TH                 0x0080
+#define ADC_EN                  0x0010
+#define M80_EN                  0x0008
+#define ACLINK_EN               0x0004
+#define IIS_EN                  0x0002
+
+/* bit definition of REG_ACTL_RESET register */
+#define W5691_PLAY              0x20000
+#define ACTL_RESET_BIT          0x10000
+#define RECORD_RIGHT_CHNNEL     0x08000
+#define RECORD_LEFT_CHNNEL      0x04000
+#define PLAY_RIGHT_CHNNEL       0x02000
+#define PLAY_LEFT_CHNNEL        0x01000
+#define DAC_PLAY                0x00800
+#define ADC_RECORD              0x00400
+#define M80_PLAY                0x00200
+#define AC_RECORD               0x00100
+#define AC_PLAY                 0x00080
+#define IIS_RECORD              0x00040
+#define IIS_PLAY                0x00020
+#define DAC_RESET               0x00010
+#define ADC_RESET               0x00008
+#define M80_RESET               0x00004
+#define AC_RESET                0x00002
+#define IIS_RESET               0x00001
+
+/* bit definition of REG_ACTL_ACCON register */
+#define AC_BCLK_PU_EN           0x20
+#define AC_R_FINISH             0x10
+#define AC_W_FINISH             0x08
+#define AC_W_RES                0x04
+#define AC_C_RES                0x02
+
+/* bit definition of ACTL_RSR register */
+#define R_FIFO_EMPTY            0x04
+#define R_DMA_END_IRQ           0x02
+#define R_DMA_MIDDLE_IRQ        0x01
+
+/* bit definition of ACTL_PSR register */
+#define P_FIFO_EMPTY            0x04
+#define P_DMA_END_IRQ           0x02
+#define P_DMA_MIDDLE_IRQ        0x01
+
+/* bit definition of ACTL_ACOS0 register */
+#define SLOT1_VALID             0x01
+#define SLOT2_VALID             0x02
+#define SLOT3_VALID             0x04
+#define SLOT4_VALID             0x08
+#define VALID_FRAME             0x10
+
+/* bit definition of ACTL_ACOS1 register */
+#define R_WB                    0x80
+
+#define CODEC_READY             0x10
+#define RESET_PRSR              0x00
+#define AUDIO_WRITE(addr, val)  __raw_writel(val, addr)
+#define AUDIO_READ(addr)        __raw_readl(addr)
+#define PCM_TX                  0
+#define PCM_RX                  1
+#define SUBSTREAM_TYPE(substream) \
+        ((substream)->stream == SNDRV_PCM_STREAM_PLAYBACK ? PCM_TX : PCM_RX)
+
+struct nuc900_audio {
+        void __iomem *mmio;
+        spinlock_t lock;
+        dma_addr_t dma_addr[2];
+        unsigned long buffersize[2];
+        unsigned long irq_num;
+        struct snd_pcm_substream *substream;
+        struct resource *res;
+        struct clk *clk;
+        struct device *dev;
+
+};
+
+extern struct nuc900_audio *nuc900_ac97_data;
+extern struct snd_soc_dai nuc900_ac97_dai;
+extern struct snd_soc_platform nuc900_soc_platform;
+
+#endif /*end _NUC900_AUDIO_H */