viafb: introduce per output device power management
This patch moves common parts of dvi.c, lcd.c and vt1636.c to hw.c to
start a per output device power management. There should be no runtime
changes aside that this patch enables the proc interface to enable/disable
devices when needed which greatly increases the chances that changes to
the output device configuration will work. However the power management is
not yet complete so it might fail on some configurations. As this area is
quite complex and touches undocumented things there is a slight chance of
regressions.
Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Joseph Chan <JosephChan@via.com.tw>
diff --git a/drivers/video/via/dvi.c b/drivers/video/via/dvi.c
index 7c82f6f..84e21b3 100644
--- a/drivers/video/via/dvi.c
+++ b/drivers/video/via/dvi.c
@@ -470,26 +470,6 @@
void viafb_dvi_disable(void)
{
if (viaparinfo->chip_info->
- tmds_chip_info.output_interface == INTERFACE_DVP0)
- viafb_write_reg(SR1E, VIASR,
- viafb_read_reg(VIASR, SR1E) & (~0xC0));
-
- if (viaparinfo->chip_info->
- tmds_chip_info.output_interface == INTERFACE_DVP1)
- viafb_write_reg(SR1E, VIASR,
- viafb_read_reg(VIASR, SR1E) & (~0x30));
-
- if (viaparinfo->chip_info->
- tmds_chip_info.output_interface == INTERFACE_DFP_HIGH)
- viafb_write_reg(SR2A, VIASR,
- viafb_read_reg(VIASR, SR2A) & (~0x0C));
-
- if (viaparinfo->chip_info->
- tmds_chip_info.output_interface == INTERFACE_DFP_LOW)
- viafb_write_reg(SR2A, VIASR,
- viafb_read_reg(VIASR, SR2A) & (~0x03));
-
- if (viaparinfo->chip_info->
tmds_chip_info.output_interface == INTERFACE_TMDS)
/* Turn off TMDS power. */
viafb_write_reg(CRD2, VIACR,
@@ -571,7 +551,6 @@
case INTERFACE_DVP0:
viafb_write_reg_mask(CR6B, VIACR, 0x01, BIT0);
viafb_write_reg_mask(CR6C, VIACR, 0x21, BIT0 + BIT5);
- viafb_write_reg_mask(SR1E, VIASR, 0xC0, BIT7 + BIT6);
dvi_patch_skew_dvp0();
if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
tmds_register_write(0x88, 0x3b);
@@ -585,7 +564,6 @@
if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
viafb_write_reg_mask(CR93, VIACR, 0x21, BIT0 + BIT5);
- viafb_write_reg_mask(SR1E, VIASR, 0x30, BIT4 + BIT5);
/*fix dvi cann't be enabled with MB VT5718C4 - Al Zhang */
if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
tmds_register_write(0x88, 0x3b);
@@ -616,14 +594,13 @@
if (viaparinfo->chip_info->gfx_chip_name != UNICHROME_CLE266)
via_write_reg_mask(VIACR, CR97, 0x03, 0x03);
- viafb_write_reg_mask(SR2A, VIASR, 0x0C, BIT2 + BIT3);
via_write_reg_mask(VIACR, 0x91, 0x00, 0x20);
break;
case INTERFACE_DFP_LOW:
if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
break;
- viafb_write_reg_mask(SR2A, VIASR, 0x03, BIT0 + BIT1);
+
dvi_patch_skew_dvp_low();
via_write_reg_mask(VIACR, 0x91, 0x00, 0x20);
break;