Gitweb: http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=2ea859...
Commit: 2ea85986dd1fa96ccf0a2f37877d58a57ff6f583
Parent: 19e2e3c30485ba78a653dc521ed9e1f2b6a8bee1
Author: Clemens Ladisch <clemens@ladisch.de>
AuthorDate: Wed Jan 30 08:38:30 2008 +0100
Committer: Mercurial server <hg@alsa0.alsa-project.org>
CommitDate: Thu Jan 31 17:30:23 2008 +0100
[ALSA] oxygen: revert SPI clock frequency change for AK4396/WM8785
While the AK4396 and WM8785 datasheets say that the SPI clock cycle
length must be at least 200 ns, 320 ns seems not to work reliably with
the controller, so we better use 160 ns.
Signed-off-by: Clemens Ladisch <clemens@ladisch.de>
Signed-off-by: Jaroslav Kysela <perex@perex.cz>
---
sound/pci/oxygen/hifier.c | 2 +-
sound/pci/oxygen/oxygen.c | 4 ++--
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/sound/pci/oxygen/hifier.c b/sound/pci/oxygen/hifier.c
index 51c4d1a..3ea1f05 100644
--- a/sound/pci/oxygen/hifier.c
+++ b/sound/pci/oxygen/hifier.c
@@ -56,7 +56,7 @@ static void ak4396_write(struct oxygen *chip, u8 reg, u8 value)
{
oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
OXYGEN_SPI_DATA_LENGTH_2 |
- OXYGEN_SPI_CLOCK_320 |
+ OXYGEN_SPI_CLOCK_160 |
(0 << OXYGEN_SPI_CODEC_SHIFT) |
OXYGEN_SPI_CEN_LATCH_CLOCK_HI,
AK4396_WRITE | (reg << 8) | value);
diff --git a/sound/pci/oxygen/oxygen.c b/sound/pci/oxygen/oxygen.c
index 840e4a6..f31a0eb 100644
--- a/sound/pci/oxygen/oxygen.c
+++ b/sound/pci/oxygen/oxygen.c
@@ -129,7 +129,7 @@ static void ak4396_write(struct oxygen *chip, unsigned int codec,
};
oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
OXYGEN_SPI_DATA_LENGTH_2 |
- OXYGEN_SPI_CLOCK_320 |
+ OXYGEN_SPI_CLOCK_160 |
(codec_spi_map[codec] << OXYGEN_SPI_CODEC_SHIFT) |
OXYGEN_SPI_CEN_LATCH_CLOCK_HI,
AK4396_WRITE | (reg << 8) | value);
@@ -139,7 +139,7 @@ static void wm8785_write(struct oxygen *chip, u8 reg, unsigned int value)
{
oxygen_write_spi(chip, OXYGEN_SPI_TRIGGER |
OXYGEN_SPI_DATA_LENGTH_2 |
- OXYGEN_SPI_CLOCK_320 |
+ OXYGEN_SPI_CLOCK_160 |
(3 << OXYGEN_SPI_CODEC_SHIFT) |
OXYGEN_SPI_CEN_LATCH_CLOCK_LO,
(reg << 9) | value);
-
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