gpu: nvgpu: move therm debugfs to linux

Move debugfs related code of therm from common driver to linux
specific part of the driver. gp106_therm_debugfs_init()
is updated to use nvgpu_os_linux_ops.

This also affects gv100 as gp106_therm_debugfs_init is used
for gv100 as well.

JIRA NVGPU-603

Change-Id: Ia293d14599bc0c91fd1e917b5a430bd8f3d96e56
Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1797906
GVS: Gerrit_Virtual_Submit
Reviewed-by: Vijayakumar Subbu <vsubbu@nvidia.com>
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

drivers/gpu/nvgpu/os/linux/debug_therm_gp106.c

@@ -0,0 +1,49 @@
+/*
+ * Copyright (c) 2018, NVIDIA Corporation. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <linux/debugfs.h>
+
+#include "os_linux.h"
+
+static int therm_get_internal_sensor_curr_temp(void *data, u64 *val)
+{
+	struct gk20a *g = (struct gk20a *)data;
+	u32 readval;
+	int err;
+
+	if (!g->ops.therm.get_internal_sensor_curr_temp)
+		return -EINVAL;
+
+	err = g->ops.therm.get_internal_sensor_curr_temp(g, &readval);
+	if (!err)
+		*val = readval;
+
+	return err;
+}
+DEFINE_SIMPLE_ATTRIBUTE(therm_ctrl_fops, therm_get_internal_sensor_curr_temp, NULL, "%llu\n");
+
+int gp106_therm_init_debugfs(struct gk20a *g)
+{
+	struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
+	struct dentry *dbgentry;
+
+	dbgentry = debugfs_create_file(
+		"temp", S_IRUGO, l->debugfs, g, &therm_ctrl_fops);
+	if (!dbgentry)
+		nvgpu_err(g, "debugfs entry create failed for therm_curr_temp");
+
+	return 0;
+}

drivers/gpu/nvgpu/os/linux/debug_therm_gp106.h

@@ -0,0 +1,29 @@
+/*
+ * Copyright (c) 2018, NVIDIA Corporation.  All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms and conditions of the GNU General Public License,
+ * version 2, as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
+ * more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#ifndef __DEBUG_THERM_GP106_H
+#define __DEBUG_THERM_GP106_H
+
+#ifdef CONFIG_DEBUG_FS
+int gp106_therm_init_debugfs(struct gk20a *g);
+#else
+inline int gp106_therm_init_debugfs(struct gk20a *g)
+{
+	return 0;
+}
+#endif
+
+#endif

drivers/gpu/nvgpu/os/linux/module.c

@@ -206,6 +206,14 @@ int nvgpu_finalize_poweron_linux(struct nvgpu_os_linux *l)
 		}
 	}
 
+	if (l->ops.therm.init_debugfs) {
+		err = l->ops.therm.init_debugfs(g);
+		if (err) {
+			nvgpu_err(g, "failed to init linux therm debugfs");
+			return err;
+		}
+	}
+
 	l->init_done = true;
 
 	return 0;

drivers/gpu/nvgpu/os/linux/os_linux.h

@@ -42,6 +42,10 @@ struct nvgpu_os_linux_ops {
 	struct {
 		int (*init_debugfs)(struct gk20a *g);
 	} clk;
+
+	struct {
+		int (*init_debugfs)(struct gk20a *g);
+	} therm;
 };
 
 struct nvgpu_os_linux {

drivers/gpu/nvgpu/os/linux/os_ops.c

@@ -21,6 +21,10 @@
 #include "os_ops_gp106.h"
 #include "os_ops_gv100.h"
 
+#if defined(CONFIG_TEGRA_GPU_NEXT)
+#include "nvgpu_gpuid_next.h"
+#endif
+
 int nvgpu_init_os_linux_ops(struct nvgpu_os_linux *l)
 {
 	struct gk20a *g = &l->g;
@@ -40,6 +44,11 @@ int nvgpu_init_os_linux_ops(struct nvgpu_os_linux *l)
 	case NVGPU_GPUID_GV100:
 		nvgpu_gv100_init_os_ops(l);
 		break;
+#if defined(CONFIG_TEGRA_GPU_NEXT)
+	case NVGPU_GPUID_NEXT:
+		NVGPU_NEXT_INIT_OS_OPS(l);
+		break;
+#endif
 	default:
 		break;
 	}

drivers/gpu/nvgpu/os/linux/os_ops_gp106.c

@@ -17,14 +17,19 @@
 #include "os_linux.h"
 
 #include "debug_clk_gp106.h"
+#include "debug_therm_gp106.h"
 
 static struct nvgpu_os_linux_ops gp106_os_linux_ops = {
 	.clk = {
 		.init_debugfs = gp106_clk_init_debugfs,
 	},
+	.therm = {
+		.init_debugfs = gp106_therm_init_debugfs,
+	},
 };
 
 void nvgpu_gp106_init_os_ops(struct nvgpu_os_linux *l)
 {
 	l->ops.clk = gp106_os_linux_ops.clk;
+	l->ops.therm = gp106_os_linux_ops.therm;
 }

drivers/gpu/nvgpu/os/linux/os_ops_gv100.c

@@ -17,14 +17,19 @@
 #include "os_linux.h"
 
 #include "debug_clk_gp106.h"
+#include "debug_therm_gp106.h"
 
 static struct nvgpu_os_linux_ops gv100_os_linux_ops = {
 	.clk = {
 		.init_debugfs = gp106_clk_init_debugfs,
 	},
+	.therm = {
+		.init_debugfs = gp106_therm_init_debugfs,
+	},
 };
 
 void nvgpu_gv100_init_os_ops(struct nvgpu_os_linux *l)
 {
 	l->ops.clk = gv100_os_linux_ops.clk;
+	l->ops.therm = gv100_os_linux_ops.therm;
 }