ASoC: kirkwood: Add i2s support

This patch enables support for the i2s controller available on kirkwood
platforms

Signed-off-by: Arnaud Patard <apatard@mandriva.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 126 insertions, 0 deletions

diff --git a/sound/soc/kirkwood/kirkwood.h b/sound/soc/kirkwood/kirkwood.h
new file mode 100644
index 000000000000..b6e4f68d71dd
--- /dev/null
+++ b/sound/soc/kirkwood/kirkwood.h
@@ -0,0 +1,126 @@
+/*
+ * kirkwood.h
+ *
+ * (c) 2010 Arnaud Patard <apatard@mandriva.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;  either version 2 of the  License, or (at your
+ *  option) any later version.
+ */
+
+#ifndef _KIRKWOOD_AUDIO_H
+#define _KIRKWOOD_AUDIO_H
+
+#define KIRKWOOD_RECORD_WIN                     0
+#define KIRKWOOD_PLAYBACK_WIN                   1
+#define KIRKWOOD_MAX_AUDIO_WIN                  2
+
+#define KIRKWOOD_AUDIO_WIN_BASE_REG(win)        (0xA00 + ((win)<<3))
+#define KIRKWOOD_AUDIO_WIN_CTRL_REG(win)        (0xA04 + ((win)<<3))
+
+
+#define KIRKWOOD_RECCTL                 0x1000
+#define KIRKWOOD_RECCTL_SPDIF_EN                (1<<11)
+#define KIRKWOOD_RECCTL_I2S_EN                  (1<<10)
+#define KIRKWOOD_RECCTL_PAUSE                   (1<<9)
+#define KIRKWOOD_RECCTL_MUTE                    (1<<8)
+#define KIRKWOOD_RECCTL_BURST_MASK              (3<<5)
+#define KIRKWOOD_RECCTL_BURST_128               (2<<5)
+#define KIRKWOOD_RECCTL_BURST_32                (1<<5)
+#define KIRKWOOD_RECCTL_MONO                    (1<<4)
+#define KIRKWOOD_RECCTL_MONO_CHAN_RIGHT (1<<3)
+#define KIRKWOOD_RECCTL_MONO_CHAN_LEFT          (0<<3)
+#define KIRKWOOD_RECCTL_SIZE_MASK               (7<<0)
+#define KIRKWOOD_RECCTL_SIZE_16         (7<<0)
+#define KIRKWOOD_RECCTL_SIZE_16_C               (3<<0)
+#define KIRKWOOD_RECCTL_SIZE_20         (2<<0)
+#define KIRKWOOD_RECCTL_SIZE_24         (1<<0)
+#define KIRKWOOD_RECCTL_SIZE_32         (0<<0)
+
+#define KIRKWOOD_REC_BUF_ADDR                   0x1004
+#define KIRKWOOD_REC_BUF_SIZE                   0x1008
+#define KIRKWOOD_REC_BYTE_COUNT                 0x100C
+
+#define KIRKWOOD_PLAYCTL                        0x1100
+#define KIRKWOOD_PLAYCTL_PLAY_BUSY              (1<<16)
+#define KIRKWOOD_PLAYCTL_BURST_MASK             (3<<11)
+#define KIRKWOOD_PLAYCTL_BURST_128              (2<<11)
+#define KIRKWOOD_PLAYCTL_BURST_32               (1<<11)
+#define KIRKWOOD_PLAYCTL_PAUSE                  (1<<9)
+#define KIRKWOOD_PLAYCTL_SPDIF_MUTE             (1<<8)
+#define KIRKWOOD_PLAYCTL_I2S_MUTE               (1<<7)
+#define KIRKWOOD_PLAYCTL_SPDIF_EN               (1<<4)
+#define KIRKWOOD_PLAYCTL_I2S_EN         (1<<3)
+#define KIRKWOOD_PLAYCTL_SIZE_MASK              (7<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_16                (7<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_16_C              (3<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_20                (2<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_24                (1<<0)
+#define KIRKWOOD_PLAYCTL_SIZE_32                (0<<0)
+
+#define KIRKWOOD_PLAY_BUF_ADDR                  0x1104
+#define KIRKWOOD_PLAY_BUF_SIZE                  0x1108
+#define KIRKWOOD_PLAY_BYTE_COUNT                0x110C
+
+#define KIRKWOOD_DCO_CTL                        0x1204
+#define KIRKWOOD_DCO_CTL_OFFSET_MASK            (0xFFF<<2)
+#define KIRKWOOD_DCO_CTL_OFFSET_0               (0x800<<2)
+#define KIRKWOOD_DCO_CTL_FREQ_MASK              (3<<0)
+#define KIRKWOOD_DCO_CTL_FREQ_11                (0<<0)
+#define KIRKWOOD_DCO_CTL_FREQ_12                (1<<0)
+#define KIRKWOOD_DCO_CTL_FREQ_24                (2<<0)
+
+#define KIRKWOOD_DCO_SPCR_STATUS                0x120c
+#define KIRKWOOD_DCO_SPCR_STATUS_DCO_LOCK       (1<<16)
+
+#define KIRKWOOD_ERR_CAUSE                      0x1300
+#define KIRKWOOD_ERR_MASK                       0x1304
+
+#define KIRKWOOD_INT_CAUSE                      0x1308
+#define KIRKWOOD_INT_MASK                       0x130C
+#define KIRKWOOD_INT_CAUSE_PLAY_BYTES           (1<<14)
+#define KIRKWOOD_INT_CAUSE_REC_BYTES            (1<<13)
+#define KIRKWOOD_INT_CAUSE_DMA_PLAY_END (1<<7)
+#define KIRKWOOD_INT_CAUSE_DMA_PLAY_3Q          (1<<6)
+#define KIRKWOOD_INT_CAUSE_DMA_PLAY_HALF        (1<<5)
+#define KIRKWOOD_INT_CAUSE_DMA_PLAY_1Q          (1<<4)
+#define KIRKWOOD_INT_CAUSE_DMA_REC_END          (1<<3)
+#define KIRKWOOD_INT_CAUSE_DMA_REC_3Q           (1<<2)
+#define KIRKWOOD_INT_CAUSE_DMA_REC_HALF (1<<1)
+#define KIRKWOOD_INT_CAUSE_DMA_REC_1Q           (1<<0)
+
+#define KIRKWOOD_REC_BYTE_INT_COUNT             0x1310
+#define KIRKWOOD_PLAY_BYTE_INT_COUNT            0x1314
+#define KIRKWOOD_BYTE_INT_COUNT_MASK            0xffffff
+
+#define KIRKWOOD_I2S_PLAYCTL                    0x2508
+#define KIRKWOOD_I2S_RECCTL                     0x2408
+#define KIRKWOOD_I2S_CTL_JUST_MASK              (0xf<<26)
+#define KIRKWOOD_I2S_CTL_LJ                     (0<<26)
+#define KIRKWOOD_I2S_CTL_I2S                    (5<<26)
+#define KIRKWOOD_I2S_CTL_RJ                     (8<<26)
+#define KIRKWOOD_I2S_CTL_SIZE_MASK              (3<<30)
+#define KIRKWOOD_I2S_CTL_SIZE_16                (3<<30)
+#define KIRKWOOD_I2S_CTL_SIZE_20                (2<<30)
+#define KIRKWOOD_I2S_CTL_SIZE_24                (1<<30)
+#define KIRKWOOD_I2S_CTL_SIZE_32                (0<<30)
+
+#define KIRKWOOD_AUDIO_BUF_MAX                  (16*1024*1024)
+
+/* Theses values come from the marvell alsa driver */
+/* need to find where they come from               */
+#define KIRKWOOD_SND_MIN_PERIODS                8
+#define KIRKWOOD_SND_MAX_PERIODS                16
+#define KIRKWOOD_SND_MIN_PERIOD_BYTES           0x4000
+#define KIRKWOOD_SND_MAX_PERIOD_BYTES           0x4000
+
+struct kirkwood_dma_data {
+        struct resource *mem;
+        void __iomem *io;
+        int irq;
+        int burst;
+        struct mbus_dram_target_info *dram;
+};
+
+#endif