From 74fade43ee6563505b29484ac5cf8c860a766650 Mon Sep 17 00:00:00 2001 From: "Ronald G. Minnich" Date: Tue, 1 Oct 2013 10:46:35 -0700 Subject: Peppy/Haswell: move more support functions from mainboard to the intel i915 driver Move (and rename to make it clearer) the function that computes display parameters from the dpcd and edid. Change-Id: Idfbb56fd312b23c742c52abca1a34ae117a8fece Signed-off-by: Ronald G. Minnich Reviewed-on: https://chromium-review.googlesource.com/171366 Reviewed-by: Furquan Shaikh Reviewed-by: Ronald Minnich Tested-by: Ronald Minnich Commit-Queue: Ronald Minnich (cherry picked from commit 8f2b3bafee7cb05db8fae1c52fc9e1ee64e5e35d) Signed-off-by: Isaac Christensen Reviewed-on: http://review.coreboot.org/6768 Tested-by: build bot (Jenkins) Reviewed-by: Ronald G. Minnich Reviewed-by: Edward O'Callaghan --- src/drivers/intel/gma/intel_dp.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'src/drivers/intel/gma/intel_dp.c') diff --git a/src/drivers/intel/gma/intel_dp.c b/src/drivers/intel/gma/intel_dp.c index 393692bd04..0a28a0b7ce 100644 --- a/src/drivers/intel/gma/intel_dp.c +++ b/src/drivers/intel/gma/intel_dp.c @@ -1787,6 +1787,22 @@ void intel_dp_set_m_n_regs(struct intel_dp *dp) gtt_write(PIPE_LINK_N1(dp->transcoder),dp->m_n.link_n); } +int intel_dp_bw_code_to_link_rate(u8 link_bw) +{ + switch (link_bw) { + default: + printk(BIOS_ERR, + "ERROR: link_bw(%d) is bogus; must be one of 6, 0xa, or 0x14\n", + link_bw); + case DP_LINK_BW_1_62: + return 162000; + case DP_LINK_BW_2_7: + return 270000; + case DP_LINK_BW_5_4: + return 540000; + } +} + void intel_dp_set_resolution(struct intel_dp *intel_dp) { gtt_write(HTOTAL(intel_dp->transcoder),intel_dp->htotal); -- cgit v1.2.3