gpu: nvgpu: Remove support for old kernel version

Remove support for pre-4.4 kernels. This allows deleting the checks
for kernel version, and usage of linux/version.h.

Change-Id: I4d6cb30512ea164d27549f4f4d096e5931bb1379
Signed-off-by: Terje Bergstrom <tbergstrom@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1543499
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

6 files changed, 1 insertions, 13 deletions

diff --git a/drivers/gpu/nvgpu/common/linux/clk.c b/drivers/gpu/nvgpu/common/linux/clk.c
index 892b892a..3f768867 100644
--- a/drivers/gpu/nvgpu/common/linux/clk.c
+++ b/drivers/gpu/nvgpu/common/linux/clk.c
@@ -17,7 +17,6 @@
  */
 
 #include <linux/clk.h>
-#include <linux/version.h>
 
 #include <soc/tegra/tegra-dvfs.h>
 
diff --git a/drivers/gpu/nvgpu/common/linux/dma.c b/drivers/gpu/nvgpu/common/linux/dma.c
index 2116053d..cd6ad1b2 100644
--- a/drivers/gpu/nvgpu/common/linux/dma.c
+++ b/drivers/gpu/nvgpu/common/linux/dma.c
@@ -16,6 +16,7 @@
 
 #include <linux/dma-attrs.h>
 #include <linux/dma-mapping.h>
+#include <linux/version.h>
 
 #include <nvgpu/dma.h>
 #include <nvgpu/lock.h>
diff --git a/drivers/gpu/nvgpu/common/linux/firmware.c b/drivers/gpu/nvgpu/common/linux/firmware.c
index b49bc4a3..44ff1507 100644
--- a/drivers/gpu/nvgpu/common/linux/firmware.c
+++ b/drivers/gpu/nvgpu/common/linux/firmware.c
@@ -44,14 +44,10 @@ static const struct firmware *do_request_firmware(struct device *dev,
                 fw_name = fw_path;
         }
 
-#if LINUX_VERSION_CODE < KERNEL_VERSION(3,18,0)
-        err = request_firmware(&fw, fw_name, dev);
-#else
         if (flags & NVGPU_REQUEST_FIRMWARE_NO_WARN)
                 err = request_firmware_direct(&fw, fw_name, dev);
         else
                 err = request_firmware(&fw, fw_name, dev);
-#endif
 
         nvgpu_kfree(get_gk20a(dev), fw_path);
         if (err)
diff --git a/drivers/gpu/nvgpu/common/linux/module.c b/drivers/gpu/nvgpu/common/linux/module.c
index f5c6ca1f..691fdd69 100644
--- a/drivers/gpu/nvgpu/common/linux/module.c
+++ b/drivers/gpu/nvgpu/common/linux/module.c
@@ -1025,9 +1025,7 @@ static struct platform_driver gk20a_driver = {
         .driver = {
                 .owner = THIS_MODULE,
                 .name = "gk20a",
-#if LINUX_VERSION_CODE >= KERNEL_VERSION(3,18,0)
                 .probe_type = PROBE_PREFER_ASYNCHRONOUS,
-#endif
 #ifdef CONFIG_OF
                 .of_match_table = tegra_gk20a_of_match,
 #endif
diff --git a/drivers/gpu/nvgpu/common/linux/platform_gk20a_tegra.c b/drivers/gpu/nvgpu/common/linux/platform_gk20a_tegra.c
index 71081be5..2c556d8a 100644
--- a/drivers/gpu/nvgpu/common/linux/platform_gk20a_tegra.c
+++ b/drivers/gpu/nvgpu/common/linux/platform_gk20a_tegra.c
@@ -13,7 +13,6 @@
  * more details.
  */
 
-#include <linux/version.h>
 #include <linux/of_platform.h>
 #include <linux/debugfs.h>
 #include <linux/platform_data/tegra_edp.h>
@@ -822,10 +821,8 @@ static int gk20a_tegra_probe(struct device *dev)
                         dev_warn(dev, "board does not support scaling");
                 }
                 platform->g->clk.gpc_pll.id = GM20B_GPC_PLL_B1;
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0))
                 if (tegra_chip_get_revision() > TEGRA210_REVISION_A04p)
                         platform->g->clk.gpc_pll.id = GM20B_GPC_PLL_C1;
-#endif
         }
 
         if (tegra_get_chip_id() == TEGRA132)
@@ -841,9 +838,7 @@ static int gk20a_tegra_probe(struct device *dev)
                         return ret;
         }
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4, 4, 0))
         pmc = ioremap(TEGRA_PMC_BASE, 4096);
-#endif
 
         return 0;
 }
diff --git a/drivers/gpu/nvgpu/common/linux/sysfs.c b/drivers/gpu/nvgpu/common/linux/sysfs.c
index 28ebb21d..1b59c480 100644
--- a/drivers/gpu/nvgpu/common/linux/sysfs.c
+++ b/drivers/gpu/nvgpu/common/linux/sysfs.c
@@ -14,7 +14,6 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
-#include <linux/version.h>
 #include <linux/device.h>
 #include <linux/pm_runtime.h>
 #include <linux/fb.h>