From d0a81f75342508449d13fd05305864413470e0c9 Mon Sep 17 00:00:00 2001 From: Furquan Shaikh Date: Tue, 30 Jul 2013 12:41:08 -0700 Subject: Calculate transcoder flags based on pipe config Works fine with all three panels with the change of 6 bits per color. Change-Id: Ia47d152e62d1879150d8cf9a6657b62007ef5c0e Reviewed-on: https://gerrit.chromium.org/gerrit/63762 Reviewed-by: Ronald G. Minnich Commit-Queue: Furquan Shaikh Tested-by: Furquan Shaikh Reviewed-on: http://review.coreboot.org/4402 Tested-by: build bot (Jenkins) Reviewed-by: Patrick Georgi --- src/drivers/intel/gma/i915.h | 24 ++++++++++++++ src/drivers/intel/gma/i915_reg.h | 1 + src/drivers/intel/gma/intel_ddi.c | 66 +++++++++++++++++++++++++++++++++++++++ 3 files changed, 91 insertions(+) (limited to 'src/drivers') diff --git a/src/drivers/intel/gma/i915.h b/src/drivers/intel/gma/i915.h index 62fe0230e6..1aed2bfb09 100644 --- a/src/drivers/intel/gma/i915.h +++ b/src/drivers/intel/gma/i915.h @@ -40,6 +40,22 @@ #define PRB0_START 0x02038 #define PRB0_CTL 0x0203c +enum port { + PORT_A = 0, + PORT_B, + PORT_C, + PORT_D, + PORT_E, + I915_NUM_PORTS +}; + +enum pipe { + PIPE_A = 0, + PIPE_B, + PIPE_C, + I915_NUM_PIPES +}; + /* debug enums. These are for printks that, due to their place in the * middle of graphics device IO, might change timing. Use with care * or not at all. @@ -143,6 +159,7 @@ struct intel_dp { u32 pipesrc; u32 stride; struct intel_dp_m_n m_n; + u32 flags; }; /* we may yet need these. */ @@ -197,3 +214,10 @@ void intel_dp_compute_m_n(unsigned int bits_per_pixel, unsigned int pixel_clock, unsigned int link_clock, struct intel_dp_m_n *m_n); + +u32 intel_ddi_calc_transcoder_flags(u32 pipe_bpp, + enum port port, + enum pipe pipe, + int type, + int lane_count, + int pf_sz); diff --git a/src/drivers/intel/gma/i915_reg.h b/src/drivers/intel/gma/i915_reg.h index 27a3d2b7da..d0c8c85f94 100644 --- a/src/drivers/intel/gma/i915_reg.h +++ b/src/drivers/intel/gma/i915_reg.h @@ -4554,6 +4554,7 @@ #define DDI_BUF_EMP_MASK (0xf<<24) #define DDI_BUF_IS_IDLE (1<<7) #define DDI_A_4_LANES (1<<4) +#define DDI_PORT_WIDTH(width) (((width) - 1) << 1) #define DDI_PORT_WIDTH_X1 (0<<1) #define DDI_PORT_WIDTH_X2 (1<<1) #define DDI_PORT_WIDTH_X4 (3<<1) diff --git a/src/drivers/intel/gma/intel_ddi.c b/src/drivers/intel/gma/intel_ddi.c index 220bd47100..f1a40f1e32 100644 --- a/src/drivers/intel/gma/intel_ddi.c +++ b/src/drivers/intel/gma/intel_ddi.c @@ -157,3 +157,69 @@ void intel_ddi_prepare_link_retrain(struct intel_dp *intel_dp, int port) udelay(600); } + +u32 intel_ddi_calc_transcoder_flags(u32 pipe_bpp, + enum port port, + enum pipe pipe, + int type, + int lane_count, + int pf_sz) +{ + u32 temp; + + temp = TRANS_DDI_FUNC_ENABLE; + temp |= TRANS_DDI_SELECT_PORT(port); + + switch (pipe_bpp) { + case 18: + temp |= TRANS_DDI_BPC_6; + break; + case 24: + temp |= TRANS_DDI_BPC_8; + break; + case 30: + temp |= TRANS_DDI_BPC_10; + break; + case 36: + temp |= TRANS_DDI_BPC_12; + break; + default: + printk(BIOS_ERR, "Invalid pipe_bpp: %d, *** Initialization will not succeed *** \n", pipe_bpp); + } + + if (port == PORT_A) { + switch (pipe) { + case PIPE_A: + if (pf_sz) + temp |= TRANS_DDI_EDP_INPUT_A_ONOFF; + else + temp |= TRANS_DDI_EDP_INPUT_A_ON; + break; + case PIPE_B: + temp |= TRANS_DDI_EDP_INPUT_B_ONOFF; + break; + case PIPE_C: + temp |= TRANS_DDI_EDP_INPUT_C_ONOFF; + break; + default: + printk(BIOS_ERR, "Invalid pipe %d\n", pipe); + } + } + + /* We need to check for TRANS_DDI_PVSYNC and TRANS_DDI_PHSYNC -- How? */ + + if (type == INTEL_OUTPUT_HDMI) { + /* Need to understand when to set TRANS_DDI_MODE_SELECT_HDMI / TRANS_DDI_MODE_SELECT_DVI */ + } else if (type == INTEL_OUTPUT_ANALOG) { + /* Set TRANS_DDI_MODE_SELECT_FDI with lane_count */ + } else if (type == INTEL_OUTPUT_DISPLAYPORT || + type == INTEL_OUTPUT_EDP) { + temp |= TRANS_DDI_MODE_SELECT_DP_SST; + + temp |= DDI_PORT_WIDTH(lane_count); + } else { + printk(BIOS_ERR, "Invalid type %d for pipe\n", type); + } + + return temp; +} -- cgit v1.2.3