From 519948a9c664020fd0b37118749faad2dfd73d97 Mon Sep 17 00:00:00 2001 From: Debarshi Dutta Date: Tue, 4 Sep 2018 10:55:33 +0530 Subject: 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 Reviewed-on: https://git-master.nvidia.com/r/1774281 Reviewed-by: mobile promotions Tested-by: mobile promotions --- drivers/gpu/nvgpu/gp106/clk_arb_gp106.c | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'drivers/gpu/nvgpu/gp106/clk_arb_gp106.c') diff --git a/drivers/gpu/nvgpu/gp106/clk_arb_gp106.c b/drivers/gpu/nvgpu/gp106/clk_arb_gp106.c index 001f2bfc..87fc6a1f 100644 --- a/drivers/gpu/nvgpu/gp106/clk_arb_gp106.c +++ b/drivers/gpu/nvgpu/gp106/clk_arb_gp106.c @@ -31,6 +31,13 @@ u32 gp106_get_arbiter_clk_domains(struct gk20a *g) return (CTRL_CLK_DOMAIN_MCLK|CTRL_CLK_DOMAIN_GPC2CLK); } +int gp106_get_arbiter_f_points(struct gk20a *g,u32 api_domain, + u32 *num_points, u16 *freqs_in_mhz) +{ + return g->ops.clk.clk_domain_get_f_points(g, + api_domain, num_points, freqs_in_mhz); +} + int gp106_get_arbiter_clk_range(struct gk20a *g, u32 api_domain, u16 *min_mhz, u16 *max_mhz) { @@ -129,6 +136,8 @@ int gp106_init_clk_arbiter(struct gk20a *g) if (!arb) return -ENOMEM; + arb->clk_arb_events_supported = true; + err = nvgpu_mutex_init(&arb->pstate_lock); if (err) goto mutex_fail; -- cgit v1.2.2