diff options
| author | Devin Heitmueller <dheitmueller@linuxtv.org> | 2009-04-01 00:11:31 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-04-06 21:43:56 -0300 |
| commit | 16af6f5a7fc2c56c4d8246b850b96324be2fec13 (patch) | |
| tree | 90a463eaf04bc98b3f98df8217aeff38800c5196 /drivers/media/video/au0828/au0828-i2c.c | |
| parent | 9beb0de9adc789a7da22dac811b03ff342b27b63 (diff) | |
V4L/DVB (11343): au0828: make i2c clock speed per-board configurable
Setup the i2c clock speed to be definable on a per-board basis. This allows
us to explicitly set the clock speed to 30 KHz on the 950q, and also gets rid
of code which sets it on a basis of what chip the i2c master is talking to
at any given time (which could have caused issues because i2c slaves should
never receive commands at a clock higher than their supported clock speed).
Signed-off-by: Devin Heitmueller <dheitmueller@linuxtv.org>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/video/au0828/au0828-i2c.c')
| -rw-r--r-- | drivers/media/video/au0828/au0828-i2c.c | 26 |
1 files changed, 6 insertions, 20 deletions
diff --git a/drivers/media/video/au0828/au0828-i2c.c b/drivers/media/video/au0828/au0828-i2c.c index 27dcfc69cd8..13e494365e7 100644 --- a/drivers/media/video/au0828/au0828-i2c.c +++ b/drivers/media/video/au0828/au0828-i2c.c @@ -146,16 +146,9 @@ static int i2c_sendbytes(struct i2c_adapter *i2c_adap, au0828_write(dev, AU0828_I2C_MULTIBYTE_MODE_2FF, 0x01); - /* FIXME: There is a problem with i2c communications with xc5000 that - requires us to slow down the i2c clock until we have a better - strategy (such as using the secondary i2c bus to do firmware - loading */ - if ((msg->addr << 1) == 0xc2) - au0828_write(dev, AU0828_I2C_CLK_DIVIDER_202, - AU0828_I2C_CLK_30KHZ); - else - au0828_write(dev, AU0828_I2C_CLK_DIVIDER_202, - AU0828_I2C_CLK_250KHZ); + /* Set the I2C clock */ + au0828_write(dev, AU0828_I2C_CLK_DIVIDER_202, + dev->board.i2c_clk_divider); /* Hardware needs 8 bit addresses */ au0828_write(dev, AU0828_I2C_DEST_ADDR_203, msg->addr << 1); @@ -230,16 +223,9 @@ static int i2c_readbytes(struct i2c_adapter *i2c_adap, au0828_write(dev, AU0828_I2C_MULTIBYTE_MODE_2FF, 0x01); - /* FIXME: There is a problem with i2c communications with xc5000 that - requires us to slow down the i2c clock until we have a better - strategy (such as using the secondary i2c bus to do firmware - loading */ - if ((msg->addr << 1) == 0xc2) - au0828_write(dev, AU0828_I2C_CLK_DIVIDER_202, - AU0828_I2C_CLK_30KHZ); - else - au0828_write(dev, AU0828_I2C_CLK_DIVIDER_202, - AU0828_I2C_CLK_250KHZ); + /* Set the I2C clock */ + au0828_write(dev, AU0828_I2C_CLK_DIVIDER_202, + dev->board.i2c_clk_divider); /* Hardware needs 8 bit addresses */ au0828_write(dev, AU0828_I2C_DEST_ADDR_203, msg->addr << 1); |