Gitweb:
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3b94253bc9c950d2038a2db4f9c804b50f82001a
Commit: 3b94253bc9c950d2038a2db4f9c804b50f82001a
Parent: 71e22a4b77fb36ce3205122454f5500843bed3ea
Author: Clemens Ladisch <[EMAIL PROTECTED]>
AuthorDate: Mon Jan 21 08:51:19 2008 +0100
Committer: Jaroslav Kysela <[EMAIL PROTECTED]>
CommitDate: Thu Jan 31 17:30:07 2008 +0100
[ALSA] oxygen: reduce SPI clock frequency for AK4396/WM8785
According to the datasheets, the SPI clock cycle must be at least 200 ns
for the AK4396 and the WM8785, so we cannot use the default 160 ns.
Signed-off-by: Clemens Ladisch <[EMAIL PROTECTED]>
Signed-off-by: Jaroslav Kysela <[EMAIL PROTECTED]>
---
sound/pci/oxygen/oxygen.c | 4 ++--
sound/pci/oxygen/oxygen_io.c | 2 +-
2 files changed, 3 insertions(+), 3 deletions(-)
diff --git a/sound/pci/oxygen/oxygen.c b/sound/pci/oxygen/oxygen.c
index 0a7c613..35b2601 100644
--- a/sound/pci/oxygen/oxygen.c
+++ b/sound/pci/oxygen/oxygen.c
@@ -166,7 +166,7 @@ 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_160 |
+ OXYGEN_SPI_CLOCK_320 |
(codec_spi_map[codec] << OXYGEN_SPI_CODEC_SHIFT) |
OXYGEN_SPI_CEN_LATCH_CLOCK_HI,
AK4396_WRITE | (reg << 8) | value);
@@ -176,7 +176,7 @@ 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_160 |
+ OXYGEN_SPI_CLOCK_320 |
(3 << OXYGEN_SPI_CODEC_SHIFT) |
OXYGEN_SPI_CEN_LATCH_CLOCK_LO,
(reg << 9) | value);
diff --git a/sound/pci/oxygen/oxygen_io.c b/sound/pci/oxygen/oxygen_io.c
index ebafc65..d0cdce0 100644
--- a/sound/pci/oxygen/oxygen_io.c
+++ b/sound/pci/oxygen/oxygen_io.c
@@ -174,7 +174,7 @@ void oxygen_write_spi(struct oxygen *chip, u8 control,
unsigned int data)
{
unsigned int count;
- /* should not need more than 3.84 us (24 * 160 ns) */
+ /* should not need more than 7.68 us (24 * 320 ns) */
count = 10;
while ((oxygen_read8(chip, OXYGEN_SPI_CONTROL) & OXYGEN_SPI_BUSY)
&& count > 0) {
-
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