Commit c64e311e authored by Jesse Barnes's avatar Jesse Barnes Committed by Chris Wilson

drm/i915: set FDI RX TU size to match transmit size

This allows FDI error checking to work.
Signed-off-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
Signed-off-by: default avatarChris Wilson <chris@chris-wilson.co.uk>
parent de9c27bf
......@@ -1857,12 +1857,18 @@ static void ironlake_fdi_enable(struct drm_crtc *crtc)
int pipeconf_reg = (pipe == 0) ? PIPEACONF : PIPEBCONF;
int fdi_tx_reg = (pipe == 0) ? FDI_TXA_CTL : FDI_TXB_CTL;
int fdi_rx_reg = (pipe == 0) ? FDI_RXA_CTL : FDI_RXB_CTL;
int data_m1_reg = (pipe == 0) ? PIPEA_DATA_M1 : PIPEB_DATA_M1;
u32 temp;
u32 pipe_bpc;
u32 tx_size;
temp = I915_READ(pipeconf_reg);
pipe_bpc = temp & PIPE_BPC_MASK;
/* Write the TU size bits so error detection works */
tx_size = I915_READ(data_m1_reg) & TU_SIZE_MASK;
I915_WRITE(FDI_RXA_TUSIZE1, tx_size);
/* enable PCH FDI RX PLL, wait warmup plus DMI latency */
temp = I915_READ(fdi_rx_reg);
/*
......
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