1 files changed, 22 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/gk20a/ltc_common.c b/drivers/gpu/nvgpu/gk20a/ltc_common.c
index d3080db1..9d534b7b 100644
--- a/drivers/gpu/nvgpu/gk20a/ltc_common.c
+++ b/drivers/gpu/nvgpu/gk20a/ltc_common.c
@@ -267,3 +267,25 @@ static void gk20a_ltc_init_cbc(struct gk20a *g, struct gr_gk20a *gr)
                             0, max_comptag_lines - 1);
 
 }
+
+#ifdef CONFIG_DEBUG_FS
+static void gk20a_ltc_sync_debugfs(struct gk20a *g)
+{
+        u32 reg_f = ltc_ltcs_ltss_tstg_set_mgmt_2_l2_bypass_mode_enabled_f();
+
+        spin_lock(&g->debugfs_lock);
+        if (g->mm.ltc_enabled != g->mm.ltc_enabled_debug) {
+                u32 reg = gk20a_readl(g, ltc_ltcs_ltss_tstg_set_mgmt_2_r());
+                if (g->mm.ltc_enabled_debug)
+                        /* bypass disabled (normal caching ops)*/
+                        reg &= ~reg_f;
+                else
+                        /* bypass enabled (no caching) */
+                        reg |= reg_f;
+
+                gk20a_writel(g, ltc_ltcs_ltss_tstg_set_mgmt_2_r(), reg);
+                g->mm.ltc_enabled = g->mm.ltc_enabled_debug;
+        }
+        spin_unlock(&g->debugfs_lock);
+}
+#endif