drm/radeon/kms: add debugfs for power management for AtomBIOS devices

Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

13 files changed, 132 insertions, 2 deletions

diff --git a/drivers/gpu/drm/radeon/Makefile b/drivers/gpu/drm/radeon/Makefile
index 09a28923f46e..b5713eedd6e1 100644
--- a/drivers/gpu/drm/radeon/Makefile
+++ b/drivers/gpu/drm/radeon/Makefile
@@ -49,7 +49,7 @@ radeon-y += radeon_device.o radeon_kms.o \
         radeon_cs.o radeon_bios.o radeon_benchmark.o r100.o r300.o r420.o \
         rs400.o rs600.o rs690.o rv515.o r520.o r600.o rv770.o radeon_test.o \
         r200.o radeon_legacy_tv.o r600_cs.o r600_blit.o r600_blit_shaders.o \
-        r600_blit_kms.o
+        r600_blit_kms.o radeon_pm.o
 
 radeon-$(CONFIG_COMPAT) += radeon_ioc32.o
 
diff --git a/drivers/gpu/drm/radeon/r420.c b/drivers/gpu/drm/radeon/r420.c
index 5c7fe52de30e..1cefdbcc0850 100644
--- a/drivers/gpu/drm/radeon/r420.c
+++ b/drivers/gpu/drm/radeon/r420.c
@@ -311,6 +311,8 @@ int r420_init(struct radeon_device *rdev)
         }
         /* Initialize clocks */
         radeon_get_clock_info(rdev->ddev);
+        /* Initialize power management */
+        radeon_pm_init(rdev);
         /* Get vram informations */
         r300_vram_info(rdev);
         /* Initialize memory controller (also test AGP) */
diff --git a/drivers/gpu/drm/radeon/r520.c b/drivers/gpu/drm/radeon/r520.c
index a555b7b19b48..f7435185c0a6 100644
--- a/drivers/gpu/drm/radeon/r520.c
+++ b/drivers/gpu/drm/radeon/r520.c
@@ -260,6 +260,8 @@ int r520_init(struct radeon_device *rdev)
         }
         /* Initialize clocks */
         radeon_get_clock_info(rdev->ddev);
+        /* Initialize power management */
+        radeon_pm_init(rdev);
         /* Get vram informations */
         r520_vram_info(rdev);
         /* Initialize memory controller (also test AGP) */
diff --git a/drivers/gpu/drm/radeon/r600.c b/drivers/gpu/drm/radeon/r600.c
index 35360b09df31..8d6bc12192d2 100644
--- a/drivers/gpu/drm/radeon/r600.c
+++ b/drivers/gpu/drm/radeon/r600.c
@@ -1621,10 +1621,13 @@ int r600_init(struct radeon_device *rdev)
         r600_scratch_init(rdev);
         /* Initialize surface registers */
         radeon_surface_init(rdev);
+        /* Initialize clocks */
         radeon_get_clock_info(rdev->ddev);
         r = radeon_clocks_init(rdev);
         if (r)
                 return r;
+        /* Initialize power management */
+        radeon_pm_init(rdev);
         /* Fence driver */
         r = radeon_fence_driver_init(rdev);
         if (r)
diff --git a/drivers/gpu/drm/radeon/radeon.h b/drivers/gpu/drm/radeon/radeon.h
index ea3efd7ae85b..9f0bd9847884 100644
--- a/drivers/gpu/drm/radeon/radeon.h
+++ b/drivers/gpu/drm/radeon/radeon.h
@@ -139,6 +139,10 @@ struct radeon_clock {
         uint32_t default_sclk;
 };
 
+/*
+ * Power management
+ */
+int radeon_pm_init(struct radeon_device *rdev);
 
 /*
  * Fences.
@@ -622,7 +626,9 @@ struct radeon_asic {
                     uint64_t dst_offset,
                     unsigned num_pages,
                     struct radeon_fence *fence);
+        uint32_t (*get_engine_clock)(struct radeon_device *rdev);
         void (*set_engine_clock)(struct radeon_device *rdev, uint32_t eng_clock);
+        uint32_t (*get_memory_clock)(struct radeon_device *rdev);
         void (*set_memory_clock)(struct radeon_device *rdev, uint32_t mem_clock);
         void (*set_pcie_lanes)(struct radeon_device *rdev, int lanes);
         void (*set_clock_gating)(struct radeon_device *rdev, int enable);
@@ -953,7 +959,9 @@ static inline void radeon_ring_write(struct radeon_device *rdev, uint32_t v)
 #define radeon_copy_blit(rdev, s, d, np, f) (rdev)->asic->copy_blit((rdev), (s), (d), (np), (f))
 #define radeon_copy_dma(rdev, s, d, np, f) (rdev)->asic->copy_dma((rdev), (s), (d), (np), (f))
 #define radeon_copy(rdev, s, d, np, f) (rdev)->asic->copy((rdev), (s), (d), (np), (f))
+#define radeon_get_engine_clock(rdev) (rdev)->asic->get_engine_clock((rdev))
 #define radeon_set_engine_clock(rdev, e) (rdev)->asic->set_engine_clock((rdev), (e))
+#define radeon_get_memory_clock(rdev) (rdev)->asic->get_memory_clock((rdev))
 #define radeon_set_memory_clock(rdev, e) (rdev)->asic->set_engine_clock((rdev), (e))
 #define radeon_set_pcie_lanes(rdev, l) (rdev)->asic->set_pcie_lanes((rdev), (l))
 #define radeon_set_clock_gating(rdev, e) (rdev)->asic->set_clock_gating((rdev), (e))
diff --git a/drivers/gpu/drm/radeon/radeon_asic.h b/drivers/gpu/drm/radeon/radeon_asic.h
index d38f99632827..94991edc839f 100644
--- a/drivers/gpu/drm/radeon/radeon_asic.h
+++ b/drivers/gpu/drm/radeon/radeon_asic.h
@@ -31,10 +31,13 @@
 /*
  * common functions
  */
+uint32_t radeon_legacy_get_engine_clock(struct radeon_device *rdev);
 void radeon_legacy_set_engine_clock(struct radeon_device *rdev, uint32_t eng_clock);
 void radeon_legacy_set_clock_gating(struct radeon_device *rdev, int enable);
 
+uint32_t radeon_atom_get_engine_clock(struct radeon_device *rdev);
 void radeon_atom_set_engine_clock(struct radeon_device *rdev, uint32_t eng_clock);
+uint32_t radeon_atom_get_memory_clock(struct radeon_device *rdev);
 void radeon_atom_set_memory_clock(struct radeon_device *rdev, uint32_t mem_clock);
 void radeon_atom_set_clock_gating(struct radeon_device *rdev, int enable);
 
@@ -93,7 +96,9 @@ static struct radeon_asic r100_asic = {
         .copy_blit = &r100_copy_blit,
         .copy_dma = NULL,
         .copy = &r100_copy_blit,
+        .get_engine_clock = &radeon_legacy_get_engine_clock,
         .set_engine_clock = &radeon_legacy_set_engine_clock,
+        .get_memory_clock = NULL,
         .set_memory_clock = NULL,
         .set_pcie_lanes = NULL,
         .set_clock_gating = &radeon_legacy_set_clock_gating,
@@ -145,7 +150,9 @@ static struct radeon_asic r300_asic = {
         .copy_blit = &r100_copy_blit,
         .copy_dma = &r300_copy_dma,
         .copy = &r100_copy_blit,
+        .get_engine_clock = &radeon_legacy_get_engine_clock,
         .set_engine_clock = &radeon_legacy_set_engine_clock,
+        .get_memory_clock = NULL,
         .set_memory_clock = NULL,
         .set_pcie_lanes = &rv370_set_pcie_lanes,
         .set_clock_gating = &radeon_legacy_set_clock_gating,
@@ -181,7 +188,9 @@ static struct radeon_asic r420_asic = {
         .copy_blit = &r100_copy_blit,
         .copy_dma = &r300_copy_dma,
         .copy = &r100_copy_blit,
+        .get_engine_clock = &radeon_atom_get_engine_clock,
         .set_engine_clock = &radeon_atom_set_engine_clock,
+        .get_memory_clock = &radeon_atom_get_memory_clock,
         .set_memory_clock = &radeon_atom_set_memory_clock,
         .set_pcie_lanes = &rv370_set_pcie_lanes,
         .set_clock_gating = &radeon_atom_set_clock_gating,
@@ -222,7 +231,9 @@ static struct radeon_asic rs400_asic = {
         .copy_blit = &r100_copy_blit,
         .copy_dma = &r300_copy_dma,
         .copy = &r100_copy_blit,
+        .get_engine_clock = &radeon_legacy_get_engine_clock,
         .set_engine_clock = &radeon_legacy_set_engine_clock,
+        .get_memory_clock = NULL,
         .set_memory_clock = NULL,
         .set_pcie_lanes = NULL,
         .set_clock_gating = &radeon_legacy_set_clock_gating,
@@ -267,7 +278,9 @@ static struct radeon_asic rs600_asic = {
         .copy_blit = &r100_copy_blit,
         .copy_dma = &r300_copy_dma,
         .copy = &r100_copy_blit,
+        .get_engine_clock = &radeon_atom_get_engine_clock,
         .set_engine_clock = &radeon_atom_set_engine_clock,
+        .get_memory_clock = &radeon_atom_get_memory_clock,
         .set_memory_clock = &radeon_atom_set_memory_clock,
         .set_pcie_lanes = NULL,
         .set_clock_gating = &radeon_atom_set_clock_gating,
@@ -305,7 +318,9 @@ static struct radeon_asic rs690_asic = {
         .copy_blit = &r100_copy_blit,
         .copy_dma = &r300_copy_dma,
         .copy = &r300_copy_dma,
+        .get_engine_clock = &radeon_atom_get_engine_clock,
         .set_engine_clock = &radeon_atom_set_engine_clock,
+        .get_memory_clock = &radeon_atom_get_memory_clock,
         .set_memory_clock = &radeon_atom_set_memory_clock,
         .set_pcie_lanes = NULL,
         .set_clock_gating = &radeon_atom_set_clock_gating,
@@ -349,7 +364,9 @@ static struct radeon_asic rv515_asic = {
         .copy_blit = &r100_copy_blit,
         .copy_dma = &r300_copy_dma,
         .copy = &r100_copy_blit,
+        .get_engine_clock = &radeon_atom_get_engine_clock,
         .set_engine_clock = &radeon_atom_set_engine_clock,
+        .get_memory_clock = &radeon_atom_get_memory_clock,
         .set_memory_clock = &radeon_atom_set_memory_clock,
         .set_pcie_lanes = &rv370_set_pcie_lanes,
         .set_clock_gating = &radeon_atom_set_clock_gating,
@@ -384,7 +401,9 @@ static struct radeon_asic r520_asic = {
         .copy_blit = &r100_copy_blit,
         .copy_dma = &r300_copy_dma,
         .copy = &r100_copy_blit,
+        .get_engine_clock = &radeon_atom_get_engine_clock,
         .set_engine_clock = &radeon_atom_set_engine_clock,
+        .get_memory_clock = &radeon_atom_get_memory_clock,
         .set_memory_clock = &radeon_atom_set_memory_clock,
         .set_pcie_lanes = &rv370_set_pcie_lanes,
         .set_clock_gating = &radeon_atom_set_clock_gating,
@@ -445,7 +464,9 @@ static struct radeon_asic r600_asic = {
         .copy_blit = &r600_copy_blit,
         .copy_dma = &r600_copy_blit,
         .copy = &r600_copy_blit,
+        .get_engine_clock = &radeon_atom_get_engine_clock,
         .set_engine_clock = &radeon_atom_set_engine_clock,
+        .get_memory_clock = &radeon_atom_get_memory_clock,
         .set_memory_clock = &radeon_atom_set_memory_clock,
         .set_pcie_lanes = NULL,
         .set_clock_gating = &radeon_atom_set_clock_gating,
@@ -481,7 +502,9 @@ static struct radeon_asic rv770_asic = {
         .copy_blit = &r600_copy_blit,
         .copy_dma = &r600_copy_blit,
         .copy = &r600_copy_blit,
+        .get_engine_clock = &radeon_atom_get_engine_clock,
         .set_engine_clock = &radeon_atom_set_engine_clock,
+        .get_memory_clock = &radeon_atom_get_memory_clock,
         .set_memory_clock = &radeon_atom_set_memory_clock,
         .set_pcie_lanes = NULL,
         .set_clock_gating = &radeon_atom_set_clock_gating,
diff --git a/drivers/gpu/drm/radeon/radeon_atombios.c b/drivers/gpu/drm/radeon/radeon_atombios.c
index 80aacded85a0..2ed88a820935 100644
--- a/drivers/gpu/drm/radeon/radeon_atombios.c
+++ b/drivers/gpu/drm/radeon/radeon_atombios.c
@@ -1133,6 +1133,24 @@ void radeon_atom_static_pwrmgt_setup(struct radeon_device *rdev, int enable)
         atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
 }
 
+uint32_t radeon_atom_get_engine_clock(struct radeon_device *rdev)
+{
+        GET_ENGINE_CLOCK_PS_ALLOCATION args;
+        int index = GetIndexIntoMasterTable(COMMAND, GetEngineClock);
+
+        atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
+        return args.ulReturnEngineClock;
+}
+
+uint32_t radeon_atom_get_memory_clock(struct radeon_device *rdev)
+{
+        GET_MEMORY_CLOCK_PS_ALLOCATION args;
+        int index = GetIndexIntoMasterTable(COMMAND, GetMemoryClock);
+
+        atom_execute_table(rdev->mode_info.atom_context, index, (uint32_t *)&args);
+        return args.ulReturnMemoryClock;
+}
+
 void radeon_atom_set_engine_clock(struct radeon_device *rdev,
                                   uint32_t eng_clock)
 {
diff --git a/drivers/gpu/drm/radeon/radeon_clocks.c b/drivers/gpu/drm/radeon/radeon_clocks.c
index f5c32a766b10..a81354167621 100644
--- a/drivers/gpu/drm/radeon/radeon_clocks.c
+++ b/drivers/gpu/drm/radeon/radeon_clocks.c
@@ -32,7 +32,7 @@
 #include "atom.h"
 
 /* 10 khz */
-static uint32_t radeon_legacy_get_engine_clock(struct radeon_device *rdev)
+uint32_t radeon_legacy_get_engine_clock(struct radeon_device *rdev)
 {
         struct radeon_pll *spll = &rdev->clock.spll;
         uint32_t fb_div, ref_div, post_div, sclk;
diff --git a/drivers/gpu/drm/radeon/radeon_pm.c b/drivers/gpu/drm/radeon/radeon_pm.c
new file mode 100644
index 000000000000..46146c6a2a06
--- /dev/null
+++ b/drivers/gpu/drm/radeon/radeon_pm.c
@@ -0,0 +1,65 @@
+/*
+ * Permission is hereby granted, free of charge, to any person obtaining a
+ * copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ *
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
+ * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
+ * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
+ * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
+ * OTHER DEALINGS IN THE SOFTWARE.
+ *
+ * Authors: Rafał Miłecki <zajec5@gmail.com>
+ */
+#include "drmP.h"
+#include "radeon.h"
+
+int radeon_debugfs_pm_init(struct radeon_device *rdev);
+
+int radeon_pm_init(struct radeon_device *rdev)
+{
+        if (radeon_debugfs_pm_init(rdev)) {
+                DRM_ERROR("Failed to register debugfs file for CP !\n");
+        }
+
+        return 0;
+}
+
+/*
+ * 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, "engine clock: %u0 Hz\n", radeon_get_engine_clock(rdev));
+        seq_printf(m, "memory clock: %u0 Hz\n", radeon_get_memory_clock(rdev));
+
+        return 0;
+}
+
+static struct drm_info_list radeon_pm_info_list[] = {
+        {"radeon_pm_info", radeon_debugfs_pm_info, 0, NULL},
+};
+#endif
+
+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
+}
diff --git a/drivers/gpu/drm/radeon/rs600.c b/drivers/gpu/drm/radeon/rs600.c
index 942754c39be9..5f117cd8736a 100644
--- a/drivers/gpu/drm/radeon/rs600.c
+++ b/drivers/gpu/drm/radeon/rs600.c
@@ -488,6 +488,8 @@ int rs600_init(struct radeon_device *rdev)
         }
         /* Initialize clocks */
         radeon_get_clock_info(rdev->ddev);
+        /* Initialize power management */
+        radeon_pm_init(rdev);
         /* Get vram informations */
         rs600_vram_info(rdev);
         /* Initialize memory controller (also test AGP) */
diff --git a/drivers/gpu/drm/radeon/rs690.c b/drivers/gpu/drm/radeon/rs690.c
index 025e3225346c..27547175cf93 100644
--- a/drivers/gpu/drm/radeon/rs690.c
+++ b/drivers/gpu/drm/radeon/rs690.c
@@ -706,6 +706,8 @@ int rs690_init(struct radeon_device *rdev)
         }
         /* Initialize clocks */
         radeon_get_clock_info(rdev->ddev);
+        /* Initialize power management */
+        radeon_pm_init(rdev);
         /* Get vram informations */
         rs690_vram_info(rdev);
         /* Initialize memory controller (also test AGP) */
diff --git a/drivers/gpu/drm/radeon/rv515.c b/drivers/gpu/drm/radeon/rv515.c
index 03c052d892c0..7935f793bf62 100644
--- a/drivers/gpu/drm/radeon/rv515.c
+++ b/drivers/gpu/drm/radeon/rv515.c
@@ -587,6 +587,8 @@ int rv515_init(struct radeon_device *rdev)
         }
         /* Initialize clocks */
         radeon_get_clock_info(rdev->ddev);
+        /* Initialize power management */
+        radeon_pm_init(rdev);
         /* Get vram informations */
         rv515_vram_info(rdev);
         /* Initialize memory controller (also test AGP) */
diff --git a/drivers/gpu/drm/radeon/rv770.c b/drivers/gpu/drm/radeon/rv770.c
index ae074fdf804d..b0efd0ddae7a 100644
--- a/drivers/gpu/drm/radeon/rv770.c
+++ b/drivers/gpu/drm/radeon/rv770.c
@@ -983,10 +983,13 @@ int rv770_init(struct radeon_device *rdev)
         r600_scratch_init(rdev);
         /* Initialize surface registers */
         radeon_surface_init(rdev);
+        /* Initialize clocks */
         radeon_get_clock_info(rdev->ddev);
         r = radeon_clocks_init(rdev);
         if (r)
                 return r;
+        /* Initialize power management */
+        radeon_pm_init(rdev);
         /* Fence driver */
         r = radeon_fence_driver_init(rdev);
         if (r)