gpu: nvgpu: add igpu support for clk_arbiter.

This patch constructs clk_arbiter specific code for gp10b as well as
gv11b and does the necessary plumbing in the clk_arbiter code. The
changes made are as follows.

1) Constructed clk_arb_gp10b.* files which add support for clk_arb
related HALS including the nvgpu_clk_arb_init and nvgpu_clk_arb_cb.
This doesn't have support for debugfs nor the VFUpdateEvent yet and
consequently no support for arb->notifications.

2) Added gpcclk specific variables corresponding to every gpc2clk in
a given clk_arb related struct.

3) Linux specific support_clk_freq_controller is assigned true in
platform_gp10b.c and platform_gv11b.c files.

4) Incremented the clk_arb_worker.put atomic variable during
worker_deinit so as to allow the worker thread to be stopped.

5) Added the flag clk_arb_events_supported as part of struct
nvgpu_clk_arb. This flag is used to selectively account for the extra
refcounting present in OS specific code i.e.
nvgpu_clk_arb_commit_request_fd. For igpus, the extra refcount is
reduced during nvgpu_clk_arb_release_completion_dev.

Bug 2061372

Change-Id: Id00acb106db2b46e55aa0324034a16a73723c078
Signed-off-by: Debarshi Dutta <ddutta@nvidia.com>
Reviewed-on: https://git-master.nvidia.com/r/1774281
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/gpu/nvgpu/Makefile.sources b/drivers/gpu/nvgpu/Makefile.sources
index fce8ea71..a26f827d 100644
--- a/drivers/gpu/nvgpu/Makefile.sources
+++ b/drivers/gpu/nvgpu/Makefile.sources
@@ -176,6 +176,7 @@ srcs :=	os/posix/nvgpu.c \
         gp10b/pmu_gp10b.c \
         gp10b/hal_gp10b.c \
         gp10b/regops_gp10b.c \
+        gp10b/clk_arb_gp10b.c \
         gp10b/fecs_trace_gp10b.c \
         gp10b/gp10b.c \
         gp10b/ecc_gp10b.c \