* [PATCH] drm/i915: Changes for calculating dsi clk for CHT
@ 2015-03-03 12:57 Gaurav K Singh
2015-03-04 2:17 ` shuang.he
0 siblings, 1 reply; 2+ messages in thread
From: Gaurav K Singh @ 2015-03-03 12:57 UTC (permalink / raw)
To: intel-gfx; +Cc: jani.nikula, Shobhit Kumar
Depending on the correct refclk, n ,p for CHT, calculate
the dsi clk during readout DSI HW state.
Signed-off-by: Gaurav K Singh <gaurav.k.singh@intel.com>
---
drivers/gpu/drm/i915/intel_dsi_pll.c | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/drivers/gpu/drm/i915/intel_dsi_pll.c b/drivers/gpu/drm/i915/intel_dsi_pll.c
index 5e44c9b..c7d55e8 100644
--- a/drivers/gpu/drm/i915/intel_dsi_pll.c
+++ b/drivers/gpu/drm/i915/intel_dsi_pll.c
@@ -357,9 +357,17 @@ u32 vlv_get_dsi_pclk(struct intel_encoder *encoder, int pipe_bpp)
u32 m = 0, p = 0;
int refclk = 25000;
int i;
+ u32 n = 1;
+ u32 m_start = 62;
DRM_DEBUG_KMS("\n");
+ if (IS_CHERRYVIEW(dev_priv->dev)) {
+ refclk = 100000;
+ n = 4;
+ m_start = 70;
+ }
+
mutex_lock(&dev_priv->dpio_lock);
pll_ctl = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_CONTROL);
pll_div = vlv_cck_read(dev_priv, CCK_REG_DSI_PLL_DIVIDER);
@@ -394,9 +402,9 @@ u32 vlv_get_dsi_pclk(struct intel_encoder *encoder, int pipe_bpp)
return 0;
}
- m = i + 62;
+ m = i + m_start;
- dsi_clock = (m * refclk) / p;
+ dsi_clock = (m * refclk) / (p * n);
/* pixel_format and pipe_bpp should agree */
assert_bpp_mismatch(intel_dsi->pixel_format, pipe_bpp);
--
1.7.9.5
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^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] drm/i915: Changes for calculating dsi clk for CHT
2015-03-03 12:57 [PATCH] drm/i915: Changes for calculating dsi clk for CHT Gaurav K Singh
@ 2015-03-04 2:17 ` shuang.he
0 siblings, 0 replies; 2+ messages in thread
From: shuang.he @ 2015-03-04 2:17 UTC (permalink / raw)
To: shuang.he, ethan.gao, intel-gfx, gaurav.k.singh
Tested-By: PRC QA PRTS (Patch Regression Test System Contact: shuang.he@intel.com)
Task id: 5875
-------------------------------------Summary-------------------------------------
Platform Delta drm-intel-nightly Series Applied
PNV -5 278/278 273/278
ILK 308/308 308/308
SNB -1 284/284 283/284
IVB 380/380 380/380
BYT 294/294 294/294
HSW -1 387/387 386/387
BDW -1 316/316 315/316
-------------------------------------Detailed-------------------------------------
Platform Test drm-intel-nightly Series Applied
PNV igt_gem_userptr_blits_coherency-sync NO_RESULT(1)CRASH(5)NRUN(1)PASS(7) CRASH(1)PASS(1)
PNV igt_gem_userptr_blits_coherency-unsync NO_RESULT(1)CRASH(4)PASS(6) CRASH(2)
PNV igt_gen3_render_linear_blits FAIL(4)NRUN(1)DMESG_WARN(1)PASS(7) FAIL(2)
PNV igt_gen3_render_mixed_blits FAIL(7)PASS(9) FAIL(2)
PNV igt_gem_fence_thrash_bo-write-verify-threaded-none FAIL(2)CRASH(4)PASS(4) FAIL(1)CRASH(1)
*SNB igt_gem_fence_thrash_bo-write-verify-x PASS(2) DMESG_WARN(1)PASS(1)
*HSW igt_gem_storedw_loop_vebox PASS(2) DMESG_WARN(2)
*BDW igt_gem_gtt_hog PASS(18) DMESG_WARN(1)PASS(1)
Note: You need to pay more attention to line start with '*'
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http://lists.freedesktop.org/mailman/listinfo/intel-gfx
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