[PATCH] radeon: Make PM info available to all, not just debug users

[Lauri Kasanen <cand@gmx.com>]

Hi all

This moves the pm_info file from debugfs to next to the other two power files.

Requested by several users at Phoronix.

PS: Please CC me. Also please be gentle, it's my first step in kernel-land ;)

Signed-off-by: Lauri Kasanen <cand@gmx.com>
---
 drivers/gpu/drm/radeon/radeon_pm.c |   86 ++++++++++++++++++-----------------
 1 files changed, 44 insertions(+), 42 deletions(-)

diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
index 0882554..7aab18f 100644
--- a/drivers/gpu/drm/radeon/radeon_pm.c
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -45,7 +45,6 @@ static const char *radeon_pm_state_type_name[5] = {
 };
 
 static void radeon_dynpm_idle_work_handler(struct work_struct *work);
-static int radeon_debugfs_pm_init(struct radeon_device *rdev);
 static bool radeon_pm_in_vbl(struct radeon_device *rdev);
 static bool radeon_pm_debug_check_in_vbl(struct radeon_device *rdev, bool finish);
 static void radeon_pm_update_profile(struct radeon_device *rdev);
@@ -437,8 +436,49 @@ fail:
 	return count;
 }
 
+static ssize_t radeon_get_pm_info(struct device *dev,
+				  struct device_attribute *attr,
+				  char *buf)
+{
+	struct drm_device *ddev = pci_get_drvdata(to_pci_dev(dev));
+	struct radeon_device *rdev = ddev->dev_private;
+
+	ssize_t curpos, len = PAGE_SIZE;
+	char *tmp;
+
+	curpos = snprintf(buf, len,
+			  "default engine clock: %u0 kHz\n"
+			  "current engine clock: %u0 kHz\n"
+			  "default memory clock: %u0 kHz\n",
+			  rdev->pm.default_sclk,
+			  radeon_get_engine_clock(rdev),
+			  rdev->pm.default_mclk);
+	len -= curpos;
+
+	if (rdev->asic->get_memory_clock) {
+		tmp = buf + curpos;
+		curpos += snprintf(tmp, len, "current memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev));
+		len = PAGE_SIZE - curpos;
+	}
+
+	if (rdev->pm.current_vddc) {
+		tmp = buf + curpos;
+		curpos += snprintf(tmp, len, "voltage: %u mV\n", rdev->pm.current_vddc);
+		len = PAGE_SIZE - curpos;
+	}
+
+	if (rdev->asic->get_pcie_lanes) {
+		tmp = buf + curpos;
+		curpos += snprintf(tmp, len, "PCIE lanes: %d\n", radeon_get_pcie_lanes(rdev));
+		len = PAGE_SIZE - curpos;
+	}
+
+	return curpos;
+}
+
 static DEVICE_ATTR(power_profile, S_IRUGO | S_IWUSR, radeon_get_pm_profile, radeon_set_pm_profile);
 static DEVICE_ATTR(power_method, S_IRUGO | S_IWUSR, radeon_get_pm_method, radeon_set_pm_method);
+static DEVICE_ATTR(power_info, S_IRUGO, radeon_get_pm_info, NULL);
 
 static ssize_t radeon_hwmon_show_temp(struct device *dev,
 				      struct device_attribute *attr,
@@ -639,14 +679,14 @@ int radeon_pm_init(struct radeon_device *rdev)
 		ret = device_create_file(rdev->dev, &dev_attr_power_method);
 		if (ret)
 			DRM_ERROR("failed to create device file for power method\n");
+		ret = device_create_file(rdev->dev, &dev_attr_power_info);
+		if (ret)
+			DRM_ERROR("failed to create device file for power info\n");
 
 #ifdef CONFIG_ACPI
 		rdev->acpi_nb.notifier_call = radeon_acpi_event;
 		register_acpi_notifier(&rdev->acpi_nb);
 #endif
-		if (radeon_debugfs_pm_init(rdev)) {
-			DRM_ERROR("Failed to register debugfs file for PM!\n");
-		}
 
 		DRM_INFO("radeon: power management initialized\n");
 	}
@@ -843,41 +883,3 @@ static void radeon_dynpm_idle_work_handler(struct work_struct *work)
 	mutex_unlock(&rdev->pm.mutex);
 	ttm_bo_unlock_delayed_workqueue(&rdev->mman.bdev, resched);
 }
-
-/*
- * Debugfs info
- */
-#if defined(CONFIG_DEBUG_FS)
-
-static int radeon_debugfs_pm_info(struct seq_file *m, void *data)
-{
-	struct drm_info_node *node = (struct drm_info_node *) m->private;
-	struct drm_device *dev = node->minor->dev;
-	struct radeon_device *rdev = dev->dev_private;
-
-	seq_printf(m, "default engine clock: %u0 kHz\n", rdev->pm.default_sclk);
-	seq_printf(m, "current engine clock: %u0 kHz\n", radeon_get_engine_clock(rdev));
-	seq_printf(m, "default memory clock: %u0 kHz\n", rdev->pm.default_mclk);
-	if (rdev->asic->pm.get_memory_clock)
-		seq_printf(m, "current memory clock: %u0 kHz\n", radeon_get_memory_clock(rdev));
-	if (rdev->pm.current_vddc)
-		seq_printf(m, "voltage: %u mV\n", rdev->pm.current_vddc);
-	if (rdev->asic->pm.get_pcie_lanes)
-		seq_printf(m, "PCIE lanes: %d\n", radeon_get_pcie_lanes(rdev));
-
-	return 0;
-}
-
-static struct drm_info_list radeon_pm_info_list[] = {
-	{"radeon_pm_info", radeon_debugfs_pm_info, 0, NULL},
-};
-#endif
-
-static int radeon_debugfs_pm_init(struct radeon_device *rdev)
-{
-#if defined(CONFIG_DEBUG_FS)
-	return radeon_debugfs_add_files(rdev, radeon_pm_info_list, ARRAY_SIZE(radeon_pm_info_list));
-#else
-	return 0;
-#endif
-}
-- 
1.7.2.1