gpu: nvgpu: gm20b: Use new delay APIs

Use platform agnostic delay functions instead of Linux kernel APIs.
This allows removing dependency to Linux header linux/delay.h. At the
same time remove #include lines for other unused Linux headers.

JIRA NVGPU-16

Change-Id: I05df9d72edaf4bb061febe0cb40fc8a7cf9f51c7
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: http://git-master/r/1460114
Reviewed-by: svccoveritychecker <svccoveritychecker@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Alex Waterman <alexw@nvidia.com>

1 files changed, 2 insertions, 6 deletions

diff --git a/drivers/gpu/nvgpu/gm20b/acr_gm20b.c b/drivers/gpu/nvgpu/gm20b/acr_gm20b.c
index 386b266d..c593dd7c 100644
--- a/drivers/gpu/nvgpu/gm20b/acr_gm20b.c
+++ b/drivers/gpu/nvgpu/gm20b/acr_gm20b.c
@@ -11,12 +11,8 @@
  * more details.
  */
 
-#include <linux/delay.h>        /* for mdelay */
 #include <linux/firmware.h>
-#include <linux/module.h>
 #include <linux/debugfs.h>
-#include <linux/dma-mapping.h>
-#include <linux/io.h>
 
 #include <linux/platform/tegra/mc.h>
 
@@ -1501,7 +1497,7 @@ static int pmu_wait_for_halt(struct gk20a *g, unsigned int timeout_ms)
                         ret = 0;
                         break;
                 }
-                udelay(1);
+                nvgpu_udelay(1);
         } while (!nvgpu_timeout_expired(&timeout));
 
         if (ret) {
@@ -1543,7 +1539,7 @@ static int clear_halt_interrupt_status(struct gk20a *g, unsigned int timeout_ms)
                         /*halt irq is clear*/
                         return 0;
 
-                udelay(1);
+                nvgpu_udelay(1);
         } while (!nvgpu_timeout_expired(&timeout));
 
         return -ETIMEDOUT;