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| author | Clemens Ladisch <clemens@ladisch.de> | 2011-03-30 08:24:25 +0200 |
|---|---|---|
| committer | Takashi Iwai <tiwai@suse.de> | 2011-03-30 08:57:27 +0200 |
| commit | 6ebb8a4a43e34f999ab36f27f972f3cd751cda4f (patch) | |
| tree | 37ef877449d45e18c9155179c74fda7e89a8470c /sound/pci/ens1370.c | |
| parent | 6ff674615c91d942e4cfb4880c14733b616c9032 (diff) | |
| download | lwn-6ebb8a4a43e34f999ab36f27f972f3cd751cda4f.tar.gz lwn-6ebb8a4a43e34f999ab36f27f972f3cd751cda4f.zip | |
ALSA: ens1371: fix Creative Ectiva support
To make the EV1938 chip work, add a magic bit and an extra delay.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Tested-by: Tino Schmidt <mailtinoshomepage@gmx.net>
Cc: all 2.6.x <stable@kernel.org>
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Diffstat (limited to 'sound/pci/ens1370.c')
| -rw-r--r-- | sound/pci/ens1370.c | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/sound/pci/ens1370.c b/sound/pci/ens1370.c index 537cfba829a5..863eafea691f 100644 --- a/sound/pci/ens1370.c +++ b/sound/pci/ens1370.c @@ -229,6 +229,7 @@ MODULE_PARM_DESC(lineio, "Line In to Rear Out (0 = auto, 1 = force)."); #define ES_REG_1371_CODEC 0x14 /* W/R: Codec Read/Write register address */ #define ES_1371_CODEC_RDY (1<<31) /* codec ready */ #define ES_1371_CODEC_WIP (1<<30) /* codec register access in progress */ +#define EV_1938_CODEC_MAGIC (1<<26) #define ES_1371_CODEC_PIRD (1<<23) /* codec read/write select register */ #define ES_1371_CODEC_WRITE(a,d) ((((a)&0x7f)<<16)|(((d)&0xffff)<<0)) #define ES_1371_CODEC_READS(a) ((((a)&0x7f)<<16)|ES_1371_CODEC_PIRD) @@ -603,12 +604,18 @@ static void snd_es1370_codec_write(struct snd_ak4531 *ak4531, #ifdef CHIP1371 +static inline bool is_ev1938(struct ensoniq *ensoniq) +{ + return ensoniq->pci->device == 0x8938; +} + static void snd_es1371_codec_write(struct snd_ac97 *ac97, unsigned short reg, unsigned short val) { struct ensoniq *ensoniq = ac97->private_data; - unsigned int t, x; + unsigned int t, x, flag; + flag = is_ev1938(ensoniq) ? EV_1938_CODEC_MAGIC : 0; mutex_lock(&ensoniq->src_mutex); for (t = 0; t < POLL_COUNT; t++) { if (!(inl(ES_REG(ensoniq, 1371_CODEC)) & ES_1371_CODEC_WIP)) { @@ -630,7 +637,8 @@ static void snd_es1371_codec_write(struct snd_ac97 *ac97, 0x00010000) break; } - outl(ES_1371_CODEC_WRITE(reg, val), ES_REG(ensoniq, 1371_CODEC)); + outl(ES_1371_CODEC_WRITE(reg, val) | flag, + ES_REG(ensoniq, 1371_CODEC)); /* restore SRC reg */ snd_es1371_wait_src_ready(ensoniq); outl(x, ES_REG(ensoniq, 1371_SMPRATE)); @@ -647,8 +655,9 @@ static unsigned short snd_es1371_codec_read(struct snd_ac97 *ac97, unsigned short reg) { struct ensoniq *ensoniq = ac97->private_data; - unsigned int t, x, fail = 0; + unsigned int t, x, flag, fail = 0; + flag = is_ev1938(ensoniq) ? EV_1938_CODEC_MAGIC : 0; __again: mutex_lock(&ensoniq->src_mutex); for (t = 0; t < POLL_COUNT; t++) { @@ -671,7 +680,8 @@ static unsigned short snd_es1371_codec_read(struct snd_ac97 *ac97, 0x00010000) break; } - outl(ES_1371_CODEC_READS(reg), ES_REG(ensoniq, 1371_CODEC)); + outl(ES_1371_CODEC_READS(reg) | flag, + ES_REG(ensoniq, 1371_CODEC)); /* restore SRC reg */ snd_es1371_wait_src_ready(ensoniq); outl(x, ES_REG(ensoniq, 1371_SMPRATE)); @@ -683,6 +693,11 @@ static unsigned short snd_es1371_codec_read(struct snd_ac97 *ac97, /* now wait for the stinkin' data (RDY) */ for (t = 0; t < POLL_COUNT; t++) { if ((x = inl(ES_REG(ensoniq, 1371_CODEC))) & ES_1371_CODEC_RDY) { + if (is_ev1938(ensoniq)) { + for (t = 0; t < 100; t++) + inl(ES_REG(ensoniq, CONTROL)); + x = inl(ES_REG(ensoniq, 1371_CODEC)); + } mutex_unlock(&ensoniq->src_mutex); return ES_1371_CODEC_READ(x); } |