drm/i915: rename INSTDONE to GEN2_INSTDONE

We have a bunch of INSTDONE registers for different platforms and
purposes and it's not immediately clear which instance they are just by
looking at the register name. This one was added on GEN2, where it was
the only INSTDONE register, so mark it as such.

Signed-off-by: Imre Deak <imre.deak@intel.com>
Reviewed-by: Ben Widawsky <ben@bwidawsk.net>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

2 files changed, 4 insertions, 3 deletions

diff --git a/drivers/gpu/drm/i915/i915_gpu_error.c b/drivers/gpu/drm/i915/i915_gpu_error.c
index 27423ed98b60..85d9a395376e 100644
--- a/drivers/gpu/drm/i915/i915_gpu_error.c
+++ b/drivers/gpu/drm/i915/i915_gpu_error.c
@@ -886,7 +886,7 @@ static void i915_record_ring_state(struct drm_device *dev,
                 ering->faddr = I915_READ(DMA_FADD_I8XX);
                 ering->ipeir = I915_READ(IPEIR);
                 ering->ipehr = I915_READ(IPEHR);
-                ering->instdone = I915_READ(INSTDONE);
+                ering->instdone = I915_READ(GEN2_INSTDONE);
         }
 
         ering->waiting = waitqueue_active(&ring->irq_queue);
@@ -1388,7 +1388,7 @@ void i915_get_extra_instdone(struct drm_device *dev, uint32_t *instdone)
         memset(instdone, 0, sizeof(*instdone) * I915_NUM_INSTDONE_REG);
 
         if (IS_GEN2(dev) || IS_GEN3(dev))
-                instdone[0] = I915_READ(INSTDONE);
+                instdone[0] = I915_READ(GEN2_INSTDONE);
         else if (IS_GEN4(dev) || IS_GEN5(dev) || IS_GEN6(dev)) {
                 instdone[0] = I915_READ(RING_INSTDONE(RENDER_RING_BASE));
                 instdone[1] = I915_READ(INSTDONE1);
diff --git a/drivers/gpu/drm/i915/i915_reg.h b/drivers/gpu/drm/i915/i915_reg.h
index d1e3c3cd27cf..5d2da1e6ea66 100644
--- a/drivers/gpu/drm/i915/i915_reg.h
+++ b/drivers/gpu/drm/i915/i915_reg.h
@@ -1602,6 +1602,7 @@ enum skl_disp_power_wells {
 /*
  * On GEN4, only the render ring INSTDONE exists and has a different
  * layout than the GEN7+ version.
+ * The GEN2 counterpart of this register is GEN2_INSTDONE.
  */
 #define RING_INSTDONE(base)     ((base)+0x6c)
 #define RING_INSTPS(base)       ((base)+0x70)
@@ -1619,7 +1620,7 @@ enum skl_disp_power_wells {
 #define   PWRCTX_EN     (1<<0)
 #define IPEIR           0x02088
 #define IPEHR           0x0208c
-#define INSTDONE        0x02090
+#define GEN2_INSTDONE   0x02090
 #define NOPID           0x02094
 #define HWSTAM          0x02098
 #define DMA_FADD_I8XX   0x020d0