gpu: nvgpu: move clk_gm20b debugfs to Linux module

Move debugfs code from clk_gm20b.c to file in Linux module
common/linux/debug_clk.c
This file will be compiled only if CONFIG_DEBUG_FS is set

Define below new HAL APIs for various clock operations
which can be accessed from debug file
init_debugfs()
get_voltage()
get_gpcclk_clock_counter()
pll_reg_write()
get_pll_debug_data()

Export nvgpu_pl_to_div() and nvgpu_div_to_pl() so
that these can be accessed from debug_clk.c

Add new structure nvgpu_clk_pll_debug_data so that
all required register values for debugging can be
made available in debug_clk.c

Add new API gm20b_get_gpc_pll_parms() so that statically
defined variable can be accessed in debug_clk.c too

Remove global variable dvfs_safe_max_freq and add
it to struct clk_gk20a so that it can accessed
from both clk_gm20b.c and debug_clk.c

Jira NVGPU-62

Change-Id: I3ae70b40235e78141a686686930e1f178ad59453
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1488903
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>

1 files changed, 2 insertions, 1 deletions

diff --git a/drivers/gpu/nvgpu/Makefile.nvgpu b/drivers/gpu/nvgpu/Makefile.nvgpu
index 4b6a8e87..c6ae67d4 100644
--- a/drivers/gpu/nvgpu/Makefile.nvgpu
+++ b/drivers/gpu/nvgpu/Makefile.nvgpu
@@ -125,7 +125,8 @@ nvgpu-$(CONFIG_DEBUG_FS) += \
         common/linux/debug_sched.o \
         common/linux/debug_mm.o \
         common/linux/debug_allocator.o \
-        common/linux/debug_kmem.o
+        common/linux/debug_kmem.o \
+        common/linux/debug_clk.o
 
 nvgpu-$(CONFIG_TEGRA_GK20A) += tegra/linux/platform_gk20a_tegra.o
 nvgpu-$(CONFIG_SYNC) += gk20a/sync_gk20a.o