freedreno: De-duplicate 19.2MHz RBBM tick conversion

The 19.2MHz always-on counter is universal across generations, so
de-duplicate.

Signed-off-by: Rob Clark <robdclark@chromium.org>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/26640>
(cherry picked from commit 2284d1c42f)

.pick_status.json

@@ -104,7 +104,7 @@
         "description": "util: Provide a secure_getenv fallback for platforms without it",
         "nominated": false,
         "nomination_type": 3,
-        "resolution": 1,
+        "resolution": 4,
         "main_sha": null,
         "because_sha": null,
         "notes": null
@@ -20014,7 +20014,7 @@
         "description": "freedreno: De-duplicate 19.2MHz RBBM tick conversion",
         "nominated": false,
         "nomination_type": 3,
-        "resolution": 4,
+        "resolution": 1,
         "main_sha": null,
         "because_sha": null,
         "notes": null

src/gallium/drivers/freedreno/a5xx/fd5_query.c

@@ -206,16 +206,6 @@ timestamp_pause(struct fd_acc_query *aq, struct fd_batch *batch) assert_dt
    OUT_RELOC(ring, query_sample(aq, start));  /* srcC */
 }
 
-static uint64_t
-ticks_to_ns(uint32_t ts)
-{
-   /* This is based on the 19.2MHz always-on rbbm timer.
-    *
-    * TODO we should probably query this value from kernel..
-    */
-   return ts * (1000000000 / 19200000);
-}
-
 static void
 time_elapsed_accumulate_result(struct fd_acc_query *aq,
                                struct fd_acc_query_sample *s,

src/gallium/drivers/freedreno/a6xx/fd6_query.cc

@@ -267,16 +267,6 @@ record_timestamp(struct fd_ringbuffer *ring, struct fd_bo *bo, unsigned offset)
    OUT_RING(ring, 0x00000000);
 }
 
-static uint64_t
-ticks_to_ns(uint64_t ts)
-{
-   /* This is based on the 19.2MHz always-on rbbm timer.
-    *
-    * TODO we should probably query this value from kernel..
-    */
-   return ts * (1000000000 / 19200000);
-}
-
 static void
 time_elapsed_accumulate_result(struct fd_acc_query *aq,
                                struct fd_acc_query_sample *s,

src/gallium/drivers/freedreno/freedreno_util.h

@@ -507,6 +507,13 @@ fd4_size2indextype(unsigned index_size)
    return INDEX4_SIZE_32_BIT;
 }
 
+/* Convert 19.2MHz RBBM always-on timer ticks to ns */
+static inline uint64_t
+ticks_to_ns(uint64_t ts)
+{
+   return ts * (1000000000 / 19200000);
+}
+
 #ifdef __cplusplus
 }
 #endif