diff options
Diffstat (limited to 'src/mainboard')
| -rw-r--r-- | src/mainboard/google/slippy/gma.c | 30 | ||||
| -rw-r--r-- | src/mainboard/google/slippy/i915io.c | 11 |
2 files changed, 38 insertions, 3 deletions
diff --git a/src/mainboard/google/slippy/gma.c b/src/mainboard/google/slippy/gma.c index 39072186e0..52a7b0b4e8 100644 --- a/src/mainboard/google/slippy/gma.c +++ b/src/mainboard/google/slippy/gma.c @@ -288,6 +288,12 @@ void dp_init_dim_regs(struct intel_dp *dp) dp->pfa_sz = (edid->ha << 16) | (edid->va); + intel_dp_compute_m_n(dp->bpp, + dp->lane_count, + dp->edid.pixel_clock, + dp->edid.link_clock, + &dp->m_n); + printk(BIOS_SPEW, "dp->stride = 0x%08x\n",dp->stride); printk(BIOS_SPEW, "dp->htotal = 0x%08x\n", dp->htotal); printk(BIOS_SPEW, "dp->hblank = 0x%08x\n", dp->hblank); @@ -299,6 +305,26 @@ void dp_init_dim_regs(struct intel_dp *dp) printk(BIOS_SPEW, "dp->pfa_pos = 0x%08x\n", dp->pfa_pos); printk(BIOS_SPEW, "dp->pfa_ctl = 0x%08x\n", dp->pfa_ctl); printk(BIOS_SPEW, "dp->pfa_sz = 0x%08x\n", dp->pfa_sz); + printk(BIOS_SPEW, "dp->link_m = 0x%08x\n", dp->m_n.link_m); + printk(BIOS_SPEW, "dp->link_n = 0x%08x\n", dp->m_n.link_n); + printk(BIOS_SPEW, "0x6f030 = 0x%08x\n", TU_SIZE(dp->m_n.tu) | dp->m_n.gmch_m); + printk(BIOS_SPEW, "0x6f030 = 0x%08x\n", dp->m_n.gmch_m); + printk(BIOS_SPEW, "0x6f034 = 0x%08x\n", dp->m_n.gmch_n); +} + +int intel_dp_bw_code_to_link_rate(u8 link_bw); + +int intel_dp_bw_code_to_link_rate(u8 link_bw) +{ + switch (link_bw) { + case DP_LINK_BW_1_62: + default: + return 162000; + case DP_LINK_BW_2_7: + return 270000; + case DP_LINK_BW_5_4: + return 540000; + } } int i915lightup(unsigned int physbase, unsigned int iobase, unsigned int mmio, @@ -366,6 +392,10 @@ int i915lightup(unsigned int pphysbase, unsigned int piobase, edid_ok = decode_edid(dp->rawedid, dp->edidlen, &dp->edid); printk(BIOS_SPEW, "decode edid returns %d\n", edid_ok); + dp->edid.link_clock = intel_dp_bw_code_to_link_rate(dp->link_bw); + + printk(BIOS_SPEW, "pixel_clock is %i, link_clock is %i\n",dp->edid.pixel_clock, dp->edid.link_clock); + dp_init_dim_regs(dp); /* more undocumented stuff. */ diff --git a/src/mainboard/google/slippy/i915io.c b/src/mainboard/google/slippy/i915io.c index 18e0480e13..c1e05472c9 100644 --- a/src/mainboard/google/slippy/i915io.c +++ b/src/mainboard/google/slippy/i915io.c @@ -117,9 +117,14 @@ printk(BIOS_SPEW, "DP_MAX_DOWNSPREAD"); /* undocumented. */ io_i915_write32(0x7e4a0000,0x6f030); - io_i915_write32(0x00800000,0x6f034); - io_i915_write32(0x00021000,0x6f040); - io_i915_write32(0x00080000,0x6f044); + /* io_i915_write32(0x00800000,0x6f034); */ + /* Write to 0x6f030 has to be 0x7e4ayyyy -- First four hex digits are important. + However, with our formula we always see values 0x7e43yyyy (1366 panel) and + 0x7e42yyy (1280 panel) */ + /* io_i915_write32(TU_SIZE(dp->m_n.tu) | dp->m_n.gmch_m,0x6f030); */ + io_i915_write32(dp->m_n.gmch_n,0x6f034); + io_i915_write32(dp->m_n.link_m,0x6f040); + io_i915_write32(dp->m_n.link_n,0x6f044); /* leave as is for now. */ io_i915_write32(dp->htotal,0x6f000); |