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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2005-04-16 15:24:32 -0700
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 15:24:32 -0700
commit7bbd827750e630003896c96d0212962276ee5d91 (patch)
tree71bb72cddbb08f9de68b2c7c05b4f5c03e8ed0bd /include/asm-ppc
parentb20af5f59797796d28b701f5d337e47c8a142eb2 (diff)
downloadop-kernel-dev-7bbd827750e630003896c96d0212962276ee5d91.zip
op-kernel-dev-7bbd827750e630003896c96d0212962276ee5d91.tar.gz
[PATCH] ppc64: very basic desktop g5 sound support
This patch hacks the current PowerMac Alsa driver to add some basic support of analog sound output to some desktop G5s. It has severe limitations though: - Only 44100Khz 16 bits - Only work on G5 models using a TAS3004 analog code, that is early single CPU desktops and all dual CPU desktops at this date, but none of the more recent ones like iMac G5. - It does analog only, no digital/SPDIF support at all, no native AC3 support Better support would require a complete rewrite of the driver (which I am working on, but don't hold your breath), to properly support the diversity of apple sound HW setup, including dual codecs, several i2s busses, all the new codecs used in the new machines, proper clock switching with digital, etc etc etc... This patch applies on top of the other PowerMac sound patches I posted in the past couple of days (new powerbook support and sleep fixes). Note: This is a FAQ entry for PowerMac sound support with TI codecs: They have a feature called "DRC" which is automatically enabled for the internal speaker (at least when auto mute control is enabled) which will cause your sound to fade out to nothing after half a second of playback if you don't set a proper "DRC Range" in the mixer. So if you have a problem like that, check alsamixer and raise your DRC Range to something reasonable. Note2: This patch will also add auto-mute of the speaker when line-out jack is used on some earlier desktop G4s (and on the G5) in addition to the headphone jack. If that behaviour isn't what you want, just disable auto-muting and use the manual mute controls in alsamixer. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/asm-ppc')
-rw-r--r--include/asm-ppc/dbdma.h2
-rw-r--r--include/asm-ppc/keylargo.h5
2 files changed, 6 insertions, 1 deletions
diff --git a/include/asm-ppc/dbdma.h b/include/asm-ppc/dbdma.h
index 6047f28..8973565 100644
--- a/include/asm-ppc/dbdma.h
+++ b/include/asm-ppc/dbdma.h
@@ -88,7 +88,7 @@ struct dbdma_cmd {
#define WAIT_ALWAYS 3 /* always wait */
/* Align an address for a DBDMA command structure */
-#define DBDMA_ALIGN(x) (((unsigned)(x) + sizeof(struct dbdma_cmd) - 1) \
+#define DBDMA_ALIGN(x) (((unsigned long)(x) + sizeof(struct dbdma_cmd) - 1) \
& -sizeof(struct dbdma_cmd))
/* Useful macros */
diff --git a/include/asm-ppc/keylargo.h b/include/asm-ppc/keylargo.h
index 457c75a..a669a3f 100644
--- a/include/asm-ppc/keylargo.h
+++ b/include/asm-ppc/keylargo.h
@@ -228,6 +228,11 @@
#define K2_FCR1_PCI1_BUS_RESET_N 0x00000010
#define K2_FCR1_PCI1_SLEEP_RESET_EN 0x00000020
+#define K2_FCR1_I2S0_CELL_ENABLE 0x00000400
+#define K2_FCR1_I2S0_RESET 0x00000800
+#define K2_FCR1_I2S0_CLK_ENABLE_BIT 0x00001000
+#define K2_FCR1_I2S0_ENABLE 0x00002000
+
#define K2_FCR1_PCI1_CLK_ENABLE 0x00004000
#define K2_FCR1_FW_CLK_ENABLE 0x00008000
#define K2_FCR1_FW_RESET_N 0x00010000
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