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[media] au8522: fix clamp control for different video modes

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Straighten out the clamp control configurations for the various video modes,
based off of register diffs done against the Hauppauge Windows driver.

This work was sponsored by GetWellNetwork Inc.

Signed-off-by: Devin Heitmueller <dheitmueller@kernellabs.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
This commit is contained in:
Devin Heitmueller 2010-06-27 18:01:40 -03:00 committed by Mauro Carvalho Chehab
parent 2428a2ed6a
commit d2c194ce47
1 changed files with 11 additions and 6 deletions
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17
drivers/media/dvb/frontends/au8522_decoder.c
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@ -347,9 +347,11 @@ static void au8522_setup_cvbs_mode(struct au8522_state *state)
au8522_writereg(state, AU8522_MODULE_CLOCK_CONTROL_REG0A3H,
AU8522_MODULE_CLOCK_CONTROL_REG0A3H_CVBS);
/* PGA in automatic mode */
au8522_writereg(state, AU8522_PGA_CONTROL_REG082H, 0x00);
au8522_writereg(state, AU8522_CLAMPING_CONTROL_REG083H, 0x0e);
au8522_writereg(state, AU8522_PGA_CONTROL_REG082H, 0x10);
/* Enable clamping control */
au8522_writereg(state, AU8522_CLAMPING_CONTROL_REG083H, 0x00);
au8522_writereg(state, AU8522_INPUT_CONTROL_REG081H,
AU8522_INPUT_CONTROL_REG081H_CVBS_CH1);
@ -366,14 +368,14 @@ static void au8522_setup_cvbs_tuner_mode(struct au8522_state *state)
au8522_writereg(state, AU8522_MODULE_CLOCK_CONTROL_REG0A3H,
AU8522_MODULE_CLOCK_CONTROL_REG0A3H_CVBS);
/* It's not clear why they turn off the PGA before enabling the clamp
control, but the Windows trace does it so we will too... */
/* It's not clear why we have to have the PGA in automatic mode while
enabling clamp control, but it's what Windows does */
au8522_writereg(state, AU8522_PGA_CONTROL_REG082H, 0x00);
/* Enable clamping control */
au8522_writereg(state, AU8522_CLAMPING_CONTROL_REG083H, 0x0e);
/* Turn on the PGA */
/* Disable automatic PGA (since the CVBS is coming from the tuner) */
au8522_writereg(state, AU8522_PGA_CONTROL_REG082H, 0x10);
/* Set input mode to CVBS on channel 4 with SIF audio input enabled */
@ -396,7 +398,10 @@ static void au8522_setup_svideo_mode(struct au8522_state *state)
au8522_writereg(state, AU8522_INPUT_CONTROL_REG081H,
AU8522_INPUT_CONTROL_REG081H_SVIDEO_CH13);
/* Disable clamping control (required for S-video) */
/* PGA in automatic mode */
au8522_writereg(state, AU8522_PGA_CONTROL_REG082H, 0x00);
/* Enable clamping control */
au8522_writereg(state, AU8522_CLAMPING_CONTROL_REG083H, 0x00);
setup_decoder_defaults(state,