From 3e68320ef84528604d971afc3cadfbe208bef001 Mon Sep 17 00:00:00 2001 From: Damien Lespiau Date: Tue, 11 Dec 2012 18:48:29 +0000 Subject: drm/i915: Preserve the FDI line reversal override bit on CPT The FDI link has supported link reversal to make the PCB layout engineer's life easier for quite a while and we have always presered this bit as we programmed FDI_RX_CTL with a read/modify/write sequence. We're trying to take a bit more control over what the BIOS leaves in various register and with the introduction of DDI, started to program FDI_RX_CTL fully. There's a fused bit to indicate DMI link reversal and FDI defaults to mirroring that configuration. We have a bit to override that behaviour that we need to preserve from the BIOS. Signed-off-by: Damien Lespiau Reviewed-by: Rodrigo Vivi Reviewed-by: Paulo Zanoni Cc: stable@vger.kernel.org Signed-off-by: Daniel Vetter --- drivers/gpu/drm/i915/i915_reg.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'drivers/gpu/drm/i915/i915_reg.h') diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h index d7542cd4abf..64919eee248 100644 --- a/drivers/gpu/drm/i915/i915_reg.h +++ b/drivers/gpu/drm/i915/i915_reg.h @@ -3911,7 +3911,7 @@ #define FDI_10BPC (1<<16) #define FDI_6BPC (2<<16) #define FDI_12BPC (3<<16) -#define FDI_LINK_REVERSE_OVERWRITE (1<<15) +#define FDI_RX_LINK_REVERSAL_OVERRIDE (1<<15) #define FDI_DMI_LINK_REVERSE_MASK (1<<14) #define FDI_RX_PLL_ENABLE (1<<13) #define FDI_FS_ERR_CORRECT_ENABLE (1<<11) -- cgit v1.2.3-70-g09d2