gpu: nvgpu: move pmgr debugfs to linux

Move debugfs related part of pmgr to linux files.

JIRA NVGPU-603

Change-Id: I478491e06e2e7cdbe3826166aafd8491d1e6c1e7
Signed-off-by: Nitin Kumbhar <nkumbhar@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1801086
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>

3 files changed, 139 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/os/linux/debug_pmgr.c b/drivers/gpu/nvgpu/os/linux/debug_pmgr.c
new file mode 100644
index 00000000..c2649785
--- /dev/null
+++ b/drivers/gpu/nvgpu/os/linux/debug_pmgr.c
@@ -0,0 +1,104 @@
+/*
+ * 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"
+
+#include "pmgr/pmgr.h"
+
+static int pmgr_pwr_devices_get_power_u64(void *data, u64 *p)
+{
+        struct gk20a *g = (struct gk20a *)data;
+        int err;
+        u32 val;
+
+        err = pmgr_pwr_devices_get_power(g, &val);
+        *p = val;
+
+        return err;
+}
+
+static int pmgr_pwr_devices_get_current_u64(void *data, u64 *p)
+{
+        struct gk20a *g = (struct gk20a *)data;
+        int err;
+        u32 val;
+
+        err = pmgr_pwr_devices_get_current(g, &val);
+        *p = val;
+
+        return err;
+}
+
+static int pmgr_pwr_devices_get_voltage_u64(void *data, u64 *p)
+{
+        struct gk20a *g = (struct gk20a *)data;
+        int err;
+        u32 val;
+
+        err = pmgr_pwr_devices_get_voltage(g, &val);
+        *p = val;
+
+        return err;
+}
+
+DEFINE_SIMPLE_ATTRIBUTE(
+                pmgr_power_ctrl_fops, pmgr_pwr_devices_get_power_u64, NULL, "%llu\n");
+
+DEFINE_SIMPLE_ATTRIBUTE(
+                pmgr_current_ctrl_fops, pmgr_pwr_devices_get_current_u64, NULL, "%llu\n");
+
+DEFINE_SIMPLE_ATTRIBUTE(
+                pmgr_voltage_ctrl_fops, pmgr_pwr_devices_get_voltage_u64, NULL, "%llu\n");
+
+static void pmgr_debugfs_init(struct gk20a *g)
+{
+        struct nvgpu_os_linux *l = nvgpu_os_linux_from_gk20a(g);
+        struct dentry *dbgentry;
+
+        dbgentry = debugfs_create_file(
+                                "power", S_IRUGO, l->debugfs, g, &pmgr_power_ctrl_fops);
+        if (!dbgentry)
+                nvgpu_err(g, "debugfs entry create failed for power");
+
+        dbgentry = debugfs_create_file(
+                                "current", S_IRUGO, l->debugfs, g, &pmgr_current_ctrl_fops);
+        if (!dbgentry)
+                nvgpu_err(g, "debugfs entry create failed for current");
+
+        dbgentry = debugfs_create_file(
+                                "voltage", S_IRUGO, l->debugfs, g, &pmgr_voltage_ctrl_fops);
+        if (!dbgentry)
+                nvgpu_err(g, "debugfs entry create failed for voltage");
+}
+
+int nvgpu_pmgr_init_debugfs_linux(struct nvgpu_os_linux *l)
+{
+        struct gk20a *g = &l->g;
+        int ret = 0;
+
+        if (!nvgpu_is_enabled(g, NVGPU_PMU_PSTATE))
+                return ret;
+
+        if (!g->ops.clk.support_pmgr_domain)
+                return ret;
+
+        pmgr_debugfs_init(g);
+
+        return ret;
+}
+
diff --git a/drivers/gpu/nvgpu/os/linux/debug_pmgr.h b/drivers/gpu/nvgpu/os/linux/debug_pmgr.h
new file mode 100644
index 00000000..bd6c5567
--- /dev/null
+++ b/drivers/gpu/nvgpu/os/linux/debug_pmgr.h
@@ -0,0 +1,28 @@
+/*
+ * 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 __LINUX_DEBUG_PMGR_H
+#define __LINUX_DEBUG_PMGR_H
+
+#ifdef CONFIG_DEBUG_FS
+int nvgpu_pmgr_init_debugfs_linux(struct nvgpu_os_linux *l);
+#else
+int nvgpu_pmgr_init_debugfs_linux(struct nvgpu_os_linux *l)
+{
+        return 0;
+}
+#endif
+#endif
diff --git a/drivers/gpu/nvgpu/os/linux/module.c b/drivers/gpu/nvgpu/os/linux/module.c
index 169baaf4..55f55f00 100644
--- a/drivers/gpu/nvgpu/os/linux/module.c
+++ b/drivers/gpu/nvgpu/os/linux/module.c
@@ -60,6 +60,7 @@
 #include "ctxsw_trace.h"
 #include "driver_common.h"
 #include "channel.h"
+#include "debug_pmgr.h"
 
 #ifdef CONFIG_NVGPU_SUPPORT_CDE
 #include "cde.h"
@@ -214,6 +215,12 @@ int nvgpu_finalize_poweron_linux(struct nvgpu_os_linux *l)
                 }
         }
 
+        err = nvgpu_pmgr_init_debugfs_linux(l);
+        if (err) {
+                nvgpu_err(g, "failed to init linux pmgr debugfs");
+                return err;
+        }
+
         l->init_done = true;
 
         return 0;