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viafb: add new output device management
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This patch adds a new output device management that stores for each
IGA which output devices are routed to it and a compatiblity layer
that converts the old per-output device values in the new format.
Bounding the output devices to each IGA is a central idea of the
cleanup. Doing it this way should be easier and make much more sense
than the old format which happily mixed different output devices
together and did not even take into account that some devices are no
longer available on newer chipsets.

Signed-off-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Cc: Joseph Chan <JosephChan@via.com.tw>
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Florian Tobias Schandinat authored and Florian Tobias Schandinat committed Sep 24, 2010
1 parent 661c65c commit 18d9dc0
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Showing 3 changed files with 114 additions and 0 deletions.
102 changes: 102 additions & 0 deletions drivers/video/via/hw.c
Original file line number Diff line number Diff line change
Expand Up @@ -753,6 +753,66 @@ void write_dac_reg(u8 index, u8 r, u8 g, u8 b)
outb(b, LUT_DATA);
}

static u32 get_dvi_devices(int output_interface)
{
switch (output_interface) {
case INTERFACE_DVP0:
return VIA_96 | VIA_6C;

case INTERFACE_DVP1:
if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
return VIA_93;
else
return VIA_DVP1;

case INTERFACE_DFP_HIGH:
if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
return 0;
else
return VIA_LVDS2 | VIA_96;

case INTERFACE_DFP_LOW:
if (viaparinfo->chip_info->gfx_chip_name == UNICHROME_CLE266)
return 0;
else
return VIA_DVP1 | VIA_LVDS1;

case INTERFACE_TMDS:
return VIA_LVDS1;
}

return 0;
}

static u32 get_lcd_devices(int output_interface)
{
switch (output_interface) {
case INTERFACE_DVP0:
return VIA_96;

case INTERFACE_DVP1:
return VIA_DVP1;

case INTERFACE_DFP_HIGH:
return VIA_LVDS2 | VIA_96;

case INTERFACE_DFP_LOW:
return VIA_LVDS1 | VIA_DVP1;

case INTERFACE_DFP:
return VIA_LVDS1 | VIA_LVDS2;

case INTERFACE_LVDS0:
case INTERFACE_LVDS0LVDS1:
return VIA_LVDS1;

case INTERFACE_LVDS1:
return VIA_LVDS2;
}

return 0;
}

/*Set IGA path for each device*/
void viafb_set_iga_path(void)
{
Expand Down Expand Up @@ -819,6 +879,48 @@ void viafb_set_iga_path(void)
viaparinfo->tmds_setting_info->iga_path = IGA1;
}
}

viaparinfo->shared->iga1_devices = 0;
viaparinfo->shared->iga2_devices = 0;
if (viafb_CRT_ON) {
if (viaparinfo->crt_setting_info->iga_path == IGA1)
viaparinfo->shared->iga1_devices |= VIA_CRT;
else
viaparinfo->shared->iga2_devices |= VIA_CRT;
}

if (viafb_DVI_ON) {
if (viaparinfo->tmds_setting_info->iga_path == IGA1)
viaparinfo->shared->iga1_devices |= get_dvi_devices(
viaparinfo->chip_info->
tmds_chip_info.output_interface);
else
viaparinfo->shared->iga2_devices |= get_dvi_devices(
viaparinfo->chip_info->
tmds_chip_info.output_interface);
}

if (viafb_LCD_ON) {
if (viaparinfo->lvds_setting_info->iga_path == IGA1)
viaparinfo->shared->iga1_devices |= get_lcd_devices(
viaparinfo->chip_info->
lvds_chip_info.output_interface);
else
viaparinfo->shared->iga2_devices |= get_lcd_devices(
viaparinfo->chip_info->
lvds_chip_info.output_interface);
}

if (viafb_LCD2_ON) {
if (viaparinfo->lvds_setting_info2->iga_path == IGA1)
viaparinfo->shared->iga1_devices |= get_lcd_devices(
viaparinfo->chip_info->
lvds_chip_info2.output_interface);
else
viaparinfo->shared->iga2_devices |= get_lcd_devices(
viaparinfo->chip_info->
lvds_chip_info2.output_interface);
}
}

static void set_color_register(u8 index, u8 red, u8 green, u8 blue)
Expand Down
9 changes: 9 additions & 0 deletions drivers/video/via/hw.h
Original file line number Diff line number Diff line change
Expand Up @@ -30,6 +30,15 @@
#define viafb_write_reg(i, p, d) via_write_reg(p, i, d)
#define viafb_write_reg_mask(i, p, d, m) via_write_reg_mask(p, i, d, m)

/* VIA output devices */
#define VIA_6C 0x00000001
#define VIA_93 0x00000002
#define VIA_96 0x00000004
#define VIA_CRT 0x00000010
#define VIA_DVP1 0x00000020
#define VIA_LVDS1 0x00000040
#define VIA_LVDS2 0x00000080

/***************************************************
* Definition IGA1 Design Method of CRTC Registers *
****************************************************/
Expand Down
3 changes: 3 additions & 0 deletions drivers/video/via/viafbdev.h
Original file line number Diff line number Diff line change
Expand Up @@ -40,6 +40,9 @@
#define VIAFB_NUM_I2C 5

struct viafb_shared {
u32 iga1_devices;
u32 iga2_devices;

struct proc_dir_entry *proc_entry; /*viafb proc entry */
struct viafb_dev *vdev; /* Global dev info */

Expand Down

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