From: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Date: Mon, 12 Mar 2018 21:09:54 -0700
Subject: drm/i915/psr: Comment to clarify SRD_DEBUG is called PSR_MASK SKL+
Git-commit: 62801bf615679293957ecdf37cc093a18158a201
Patch-mainline: v4.18-rc1
References: FATE#326289 FATE#326079 FATE#326049 FATE#322398 FATE#326166
What was called SRD_DEBUG(0x6F860) on HSW and BDW was renamed to PSR_MASK
SKL onwards, add a note next to the macro definition.
There is also a different PSR_DEBUG on SKL+ to add to the confusion.
Signed-off-by: Dhinakaran Pandiyan <dhinakaran.pandiyan@intel.com>
Acked-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Signed-off-by: Rodrigo Vivi <rodrigo.vivi@intel.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20180313040954.6289-1-dhinakaran.pandiyan@intel.com
Acked-by: Petr Tesarik <ptesarik@suse.com>
---
drivers/gpu/drm/i915/i915_reg.h | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -4180,13 +4180,13 @@ enum {
#define EDP_PSR_PERF_CNT _MMIO(dev_priv->psr_mmio_base + 0x44)
#define EDP_PSR_PERF_CNT_MASK 0xffffff
-#define EDP_PSR_DEBUG _MMIO(dev_priv->psr_mmio_base + 0x60)
+#define EDP_PSR_DEBUG _MMIO(dev_priv->psr_mmio_base + 0x60) /* PSR_MASK on SKL+ */
#define EDP_PSR_DEBUG_MASK_MAX_SLEEP (1<<28)
#define EDP_PSR_DEBUG_MASK_LPSP (1<<27)
#define EDP_PSR_DEBUG_MASK_MEMUP (1<<26)
#define EDP_PSR_DEBUG_MASK_HPD (1<<25)
#define EDP_PSR_DEBUG_MASK_DISP_REG_WRITE (1<<16)
-#define EDP_PSR_DEBUG_EXIT_ON_PIXEL_UNDERRUN (1<<15)
+#define EDP_PSR_DEBUG_EXIT_ON_PIXEL_UNDERRUN (1<<15) /* SKL+ */
#define EDP_PSR2_CTL _MMIO(0x6f900)
#define EDP_PSR2_ENABLE (1<<31)