viafb: add new output device management

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>

1 files changed, 102 insertions, 0 deletions

diff --git a/drivers/video/via/hw.c b/drivers/video/via/hw.c
index 638cf96c8739..30cc2f0961e3 100644
--- a/drivers/video/via/hw.c
+++ b/drivers/video/via/hw.c
@@ -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)
 {
@@ -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)