From 78df617acf83745908ae71f322e084284054ea66 Mon Sep 17 00:00:00 2001 From: Andreas Mohr Date: Sun, 12 Jul 2009 22:17:54 +0200 Subject: ALSA: azt3328: fix previous breakage, improve suspend, cleanups - fix my previous codec activity breakage (_non-warned_ variable assignment issue) - convert suspend/resume to 32bit I/O access (I/O is painful; to improve suspend/resume performance) - change DEBUG_PLAY_REC to DEBUG_CODEC for consistency - printk cleanup - some logging improvements - minor cleanup/improvements The variable assignment issue above was a conditional assignment to the call_function variable (this ended with the non-preinitialized variable not getting assigned in some cases, thus a dangling stack value, yet gcc 4.3.3 unbelievably did _NOT_ warn about it in this case!!), needed to change this into _always_ assigning the check result. Practical result of this bug was that when shutting down _either_ playback or capture, _both_ streams dropped dead :P Tested, working (plus resume) and checkpatch.pl:ed on 2.6.30-rc5, applies cleanly to 2.6.30 proper with my previous (committed) patches applied. Signed-off-by: Andreas Mohr Signed-off-by: Takashi Iwai --- sound/pci/azt3328.h | 16 +++++++++++----- 1 file changed, 11 insertions(+), 5 deletions(-) (limited to 'sound/pci/azt3328.h') diff --git a/sound/pci/azt3328.h b/sound/pci/azt3328.h index 11d4b108b8db..6f46b97650cc 100644 --- a/sound/pci/azt3328.h +++ b/sound/pci/azt3328.h @@ -120,8 +120,10 @@ enum azf_freq_t { #define IDX_IO_IRQSTATUS 0x64 /* some IRQ bit in here might also be used to signal a power-management timer * timeout, to request shutdown of the chip (e.g. AD1815JS has such a thing). - * Some OPL3 hardware (e.g. in LM4560) has some special timer hardware which - * can trigger an OPL3 timer IRQ, so maybe there's such a thing as well... */ + * OPL3 hardware contains several timers which confusingly in most cases + * are NOT routed to an IRQ, but some designs (e.g. LM4560) DO support that, + * so I wouldn't be surprised at all to discover that AZF3328 + * supports that thing as well... */ #define IRQ_PLAYBACK 0x0001 #define IRQ_RECORDING 0x0002 @@ -129,8 +131,8 @@ enum azf_freq_t { #define IRQ_GAMEPORT 0x0008 /* Interrupt of Digital(ly) Enhanced Game Port */ #define IRQ_MPU401 0x0010 #define IRQ_TIMER 0x0020 /* DirectX timer */ - #define IRQ_UNKNOWN2 0x0040 /* probably unused, or possibly I2S port? */ - #define IRQ_UNKNOWN3 0x0080 /* probably unused, or possibly I2S port? */ + #define IRQ_UNKNOWN2 0x0040 /* probably unused, or possibly OPL3 timer? */ + #define IRQ_UNKNOWN3 0x0080 /* probably unused, or possibly OPL3 timer? */ #define IDX_IO_66H 0x66 /* writing 0xffff returns 0x0000 */ /* this is set to e.g. 0x3ff or 0x300, and writable; * maybe some buffer limit, but I couldn't find out more, PU:0x00ff: */ @@ -193,7 +195,7 @@ enum azf_freq_t { /*** Gameport area port indices ***/ /* (only 0x06 of 0x08 bytes saved/restored by Windows driver) */ #define AZF_IO_SIZE_GAME 0x08 -#define AZF_IO_SIZE_GAME_PM 0x06 +#define AZF_IO_SIZE_GAME_PM 0x06 enum { AZF_GAME_LEGACY_IO_PORT = 0x200 @@ -274,6 +276,7 @@ enum { #define AZF_IO_SIZE_MPU_PM 0x04 /*** OPL3 synth ***/ +/* (only 0x06 of 0x08 bytes saved/restored by Windows driver) */ #define AZF_IO_SIZE_OPL3 0x08 #define AZF_IO_SIZE_OPL3_PM 0x06 /* hmm, given that a standard OPL3 has 4 registers only, @@ -333,4 +336,7 @@ enum { #define SET_CHAN_LEFT 1 #define SET_CHAN_RIGHT 2 +/* helper macro to align I/O port ranges to 32bit I/O width */ +#define AZF_ALIGN(x) (((x) + 3) & (~3)) + #endif /* __SOUND_AZT3328_H */ -- cgit v1.2.3