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authorHans-Christian Egtvedt <hans-christian.egtvedt@atmel.com>2009-04-02 08:21:10 +0200
committerTakashi Iwai <tiwai@suse.de>2009-04-06 03:54:48 +0200
commit8321fc0113a1be0cdfc9cbad1db1de74073acd8f (patch)
tree88b7ccf16d17721b547ec1d153df0da73e232076 /sound/atmel
parent0221c81b1b8eb0cbb6b30a0ced52ead32d2b4e4c (diff)
downloadlinux-8321fc0113a1be0cdfc9cbad1db1de74073acd8f.tar.gz
ALSA: snd-atmel-ac97c: cleanup register definitions
This patch will remove traces of channel B registers, since they are not used by the AC97C driver. Channel B might be used for other purposes. The driver also adds channel status bits TXEMPTY and OVRUN and a AC97C_CH_MASK macro to ease clearing a channel settings. Signed-off-by: Hans-Christian Egtvedt <hans-christian.egtvedt@atmel.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/atmel')
-rw-r--r--sound/atmel/ac97c.h14
1 files changed, 8 insertions, 6 deletions
diff --git a/sound/atmel/ac97c.h b/sound/atmel/ac97c.h
index c17bd582598..ecbba5021c8 100644
--- a/sound/atmel/ac97c.h
+++ b/sound/atmel/ac97c.h
@@ -1,5 +1,5 @@
/*
- * Register definitions for the Atmel AC97C controller
+ * Register definitions for Atmel AC97C
*
* Copyright (C) 2005-2009 Atmel Corporation
*
@@ -17,10 +17,6 @@
#define AC97C_CATHR 0x24
#define AC97C_CASR 0x28
#define AC97C_CAMR 0x2c
-#define AC97C_CBRHR 0x30
-#define AC97C_CBTHR 0x34
-#define AC97C_CBSR 0x38
-#define AC97C_CBMR 0x3c
#define AC97C_CORHR 0x40
#define AC97C_COTHR 0x44
#define AC97C_COSR 0x48
@@ -46,8 +42,10 @@
#define AC97C_MR_VRA (1 << 2)
#define AC97C_CSR_TXRDY (1 << 0)
+#define AC97C_CSR_TXEMPTY (1 << 1)
#define AC97C_CSR_UNRUN (1 << 2)
#define AC97C_CSR_RXRDY (1 << 4)
+#define AC97C_CSR_OVRUN (1 << 5)
#define AC97C_CSR_ENDTX (1 << 10)
#define AC97C_CSR_ENDRX (1 << 14)
@@ -61,11 +59,15 @@
#define AC97C_CMR_DMAEN (1 << 22)
#define AC97C_SR_CAEVT (1 << 3)
+#define AC97C_SR_COEVT (1 << 2)
+#define AC97C_SR_WKUP (1 << 1)
+#define AC97C_SR_SOF (1 << 0)
+#define AC97C_CH_MASK(slot) \
+ (0x7 << (3 * (AC97_SLOT_##slot - 3)))
#define AC97C_CH_ASSIGN(slot, channel) \
(AC97C_CHANNEL_##channel << (3 * (AC97_SLOT_##slot - 3)))
#define AC97C_CHANNEL_NONE 0x0
#define AC97C_CHANNEL_A 0x1
-#define AC97C_CHANNEL_B 0x2
#endif /* __SOUND_ATMEL_AC97C_H */