[PATCH] drm/radeon/dpm: add debugfs support for rs780

[Anthoine Bourgeois <anthoine.bourgeois@gmail.com>]

This allows you to look at the current DPM state via debugfs.

Signed-off-by: Anthoine Bourgeois <anthoine.bourgeois@gmail.com>
---
 drivers/gpu/drm/radeon/radeon_asic.c |  1 +
 drivers/gpu/drm/radeon/radeon_asic.h |  2 ++
 drivers/gpu/drm/radeon/rs780_dpm.c   | 28 ++++++++++++++++++++++++++++
 3 files changed, 31 insertions(+)

diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index fea997e..78bec1a 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -1270,6 +1270,7 @@ static struct radeon_asic rs780_asic = {
 		.get_sclk = &rs780_dpm_get_sclk,
 		.get_mclk = &rs780_dpm_get_mclk,
 		.print_power_state = &rs780_dpm_print_power_state,
+		.debugfs_print_current_performance_level = &rs780_dpm_debugfs_print_current_performance_level,
 	},
 	.pflip = {
 		.pre_page_flip = &rs600_pre_page_flip,
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index b04b578..ca18957 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -433,6 +433,8 @@ u32 rs780_dpm_get_sclk(struct radeon_device *rdev, bool low);
 u32 rs780_dpm_get_mclk(struct radeon_device *rdev, bool low);
 void rs780_dpm_print_power_state(struct radeon_device *rdev,
 				 struct radeon_ps *ps);
+void rs780_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,
+						       struct seq_file *m);
 
 /* uvd */
 int r600_uvd_init(struct radeon_device *rdev);
diff --git a/drivers/gpu/drm/radeon/rs780_dpm.c b/drivers/gpu/drm/radeon/rs780_dpm.c
index bef832a..ef5a28e 100644
--- a/drivers/gpu/drm/radeon/rs780_dpm.c
+++ b/drivers/gpu/drm/radeon/rs780_dpm.c
@@ -961,3 +961,31 @@ u32 rs780_dpm_get_mclk(struct radeon_device *rdev, bool low)
 
 	return pi->bootup_uma_clk;
 }
+
+void rs780_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,
+						       struct seq_file *m)
+{
+	struct radeon_ps *rps = rdev->pm.dpm.current_ps;
+	struct igp_ps *ps = rs780_get_ps(rps);
+	u32 sclk;
+	enum rs780_vddc_level vddc;
+	u32 current_index = r600_power_level_get_current_index(rdev);
+
+	if (current_index > 1) {
+		seq_printf(m, "invalid dpm profile %d\n", current_index);
+	} else {
+		if (current_index == 0) {
+			sclk = ps->sclk_low;
+			vddc = rs780_get_voltage_for_vddc_level(rdev,
+								ps->min_voltage);
+		} else { /* current_index == 1 */
+			sclk = ps->sclk_high;
+			vddc = rs780_get_voltage_for_vddc_level(rdev,
+								ps->max_voltage);
+		}
+		seq_printf(m, "uvd    vclk: %d dclk: %d\n", rps->vclk, rps->dclk);
+		seq_printf(m, "power level %d    sclk: %u mclk: %u vddc: %u\n",
+			   current_index, sclk,
+			   rs780_dpm_get_mclk(rdev, false), vddc);
+	}
+}
-- 
1.8.1.5