drm/radeon: Another card with wrong primary dac adj

commit f7929f34fa0e0bb6736a2484fdc07d77a1653081 upstream.

Hello,
got another card with "too bright" problem:
Sapphire Radeon VE 7000 DDR (VGA+S-Video)

lspci -vnn:
01:00.0 VGA compatible controller [0300]: Advanced Micro Devices [AMD] nee ATI RV100 QY [Radeon 7000/VE] [1002:5159] (prog-if 00 [VGA controller])
        Subsystem: PC Partner Limited Sapphire Radeon VE 7000 DDR [174b:7c28]

The patch below fixes the problem for this card.
But I don't like the blacklist, couldn't some heuristic be used instead?
The interesting thing is that the manufacturer is the same as the other card
needing the same quirk. I wonder how many different types are broken this way.

The "wrong" ps2_pdac_adj value that comes from BIOS on this card is 0x300.

====================
drm/radeon: Add primary dac adj quirk for Sapphire Radeon VE 7000 DDR

Values from BIOS are wrong, causing too bright colors.
Use default values instead.

Signed-off-by: Ondrej Zary <linux@rainbow-software.org>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>

diff --git a/drivers/gpu/drm/radeon/radeon_combios.c b/drivers/gpu/drm/radeon/radeon_combios.c
index c32fd93..f084cd7 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_combios.c
+++ b/drivers/gpu/drm/radeon/radeon_combios.c
@@ -959,10 +959,14 @@ struct radeon_encoder_primary_dac *radeon_combios_get_primary_dac_info(struct
        }
 
        /* quirks */
+       /* Radeon 7000 (RV100) */
+       if (((dev->pdev->device == 0x5159) &&
+           (dev->pdev->subsystem_vendor == 0x174B) &&
+           (dev->pdev->subsystem_device == 0x7c28)) ||
        /* Radeon 9100 (R200) */
-       if ((dev->pdev->device == 0x514D) &&
+          ((dev->pdev->device == 0x514D) &&
            (dev->pdev->subsystem_vendor == 0x174B) &&
-           (dev->pdev->subsystem_device == 0x7149)) {
+           (dev->pdev->subsystem_device == 0x7149))) {
                /* vbios value is bad, use the default */
                found = 0;
        }