drm/radeon/dpm: add debugfs support for 7xx/evergreen/btc

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

Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/radeon/radeon_asic.c b/drivers/gpu/drm/radeon/radeon_asic.c
index 58d4cc5c7c97fdb7b90e8a75cf7cbe24eac0513f..a2a34f86434becba3529a300a87040f83ae59dbb 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_asic.c
+++ b/drivers/gpu/drm/radeon/radeon_asic.c
@@ -1392,6 +1392,7 @@ static struct radeon_asic rv770_asic = {
                .get_sclk = &rv770_dpm_get_sclk,
                .get_mclk = &rv770_dpm_get_mclk,
                .print_power_state = &rv770_dpm_print_power_state,
+               .debugfs_print_current_performance_level = &rv770_dpm_debugfs_print_current_performance_level,
        },
        .pflip = {
                .pre_page_flip = &rs600_pre_page_flip,
@@ -1514,6 +1515,7 @@ static struct radeon_asic evergreen_asic = {
                .get_sclk = &rv770_dpm_get_sclk,
                .get_mclk = &rv770_dpm_get_mclk,
                .print_power_state = &rv770_dpm_print_power_state,
+               .debugfs_print_current_performance_level = &rv770_dpm_debugfs_print_current_performance_level,
        },
        .pflip = {
                .pre_page_flip = &evergreen_pre_page_flip,
@@ -1758,6 +1760,7 @@ static struct radeon_asic btc_asic = {
                .get_sclk = &btc_dpm_get_sclk,
                .get_mclk = &btc_dpm_get_mclk,
                .print_power_state = &rv770_dpm_print_power_state,
+               .debugfs_print_current_performance_level = &rv770_dpm_debugfs_print_current_performance_level,
        },
        .pflip = {
                .pre_page_flip = &evergreen_pre_page_flip,

diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index 6b1ede11ed20cd2a3bc26e1caa8597c89a8571d4..39f5d96d7c49527f55b6f197b36050482f554b6c 100644 (file)
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -476,6 +476,8 @@ u32 rv770_dpm_get_sclk(struct radeon_device *rdev, bool low);
 u32 rv770_dpm_get_mclk(struct radeon_device *rdev, bool low);
 void rv770_dpm_print_power_state(struct radeon_device *rdev,
                                 struct radeon_ps *ps);
+void rv770_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,
+                                                      struct seq_file *m);
 
 /*
  * evergreen

diff --git a/drivers/gpu/drm/radeon/rv770_dpm.c b/drivers/gpu/drm/radeon/rv770_dpm.c
index 7f6fa6221234c60b3085933bddaedc74f38211db..2436b5c7e66ece198343c37ee628b90df25773c0 100644 (file)
--- a/drivers/gpu/drm/radeon/rv770_dpm.c
+++ b/drivers/gpu/drm/radeon/rv770_dpm.c
@@ -2430,6 +2430,36 @@ void rv770_dpm_print_power_state(struct radeon_device *rdev,
        r600_dpm_print_ps_status(rdev, rps);
 }
 
+void rv770_dpm_debugfs_print_current_performance_level(struct radeon_device *rdev,
+                                                      struct seq_file *m)
+{
+       struct radeon_ps *rps = rdev->pm.dpm.current_ps;
+       struct rv7xx_ps *ps = rv770_get_ps(rps);
+       struct rv7xx_pl *pl;
+       u32 current_index =
+               (RREG32(TARGET_AND_CURRENT_PROFILE_INDEX) & CURRENT_PROFILE_INDEX_MASK) >>
+               CURRENT_PROFILE_INDEX_SHIFT;
+
+       if (current_index > 2) {
+               seq_printf(m, "invalid dpm profile %d\n", current_index);
+       } else {
+               if (current_index == 0)
+                       pl = &ps->low;
+               else if (current_index == 1)
+                       pl = &ps->medium;
+               else /* current_index == 2 */
+                       pl = &ps->high;
+               seq_printf(m, "uvd    vclk: %d dclk: %d\n", rps->vclk, rps->dclk);
+               if (rdev->family >= CHIP_CEDAR) {
+                       seq_printf(m, "power level %d    sclk: %u mclk: %u vddc: %u vddci: %u\n",
+                                  current_index, pl->sclk, pl->mclk, pl->vddc, pl->vddci);
+               } else {
+                       seq_printf(m, "power level %d    sclk: %u mclk: %u vddc: %u\n",
+                                  current_index, pl->sclk, pl->mclk, pl->vddc);
+               }
+       }
+}
+
 void rv770_dpm_fini(struct radeon_device *rdev)
 {
        int i;

diff --git a/drivers/gpu/drm/radeon/rv770d.h b/drivers/gpu/drm/radeon/rv770d.h
index 784eeaf315c3c5fc027638e17a553db519bc2744..6bef2b7d601b9f6ac9b336cafc3a705b65202f84 100644 (file)
--- a/drivers/gpu/drm/radeon/rv770d.h
+++ b/drivers/gpu/drm/radeon/rv770d.h
@@ -207,6 +207,10 @@
 #       define MUX_TCLK_TO_XCLK                           (1 << 8)
 #       define XTALIN_DIVIDE                              (1 << 9)
 
+#define TARGET_AND_CURRENT_PROFILE_INDEX                  0x66c
+#       define CURRENT_PROFILE_INDEX_MASK                 (0xf << 4)
+#       define CURRENT_PROFILE_INDEX_SHIFT                4
+
 #define S0_VID_LOWER_SMIO_CNTL                            0x678
 #define S1_VID_LOWER_SMIO_CNTL                            0x67c
 #define S2_VID_LOWER_SMIO_CNTL                            0x680