diff options
author | Sachit Kadle <skadle@nvidia.com> | 2017-01-09 20:34:14 -0500 |
---|---|---|
committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2017-06-19 19:36:26 -0400 |
commit | 4d8895276003edf0183c94f3e2f5de378bf9d345 (patch) | |
tree | 8093dd0531718b05f8796a226c0d3f747d2289c3 /drivers/gpu/nvgpu/vgpu/clk_vgpu.c | |
parent | b3a7c2b305ec6f895dc236f0c5f163bd4cbeb248 (diff) |
gpu: nvgpu: vgpu: add freq capping support
Currently callbacks from the PM_QOS framework (for
thermal events), result in a RPC call to set GPU frequency.
Since the governor will now be responsible for setting desired
rate, the max PM_QOS callback will now cap the possible
GPU frequency w/ a new RPC call to the server. The server
is responsible for setting the ultimate frequency
based on the cap & desired rates.
Jira VFND-3699
Change-Id: I806e309c40abc2f1381b6a23f2d898cfe26f9794
Signed-off-by: Sachit Kadle <skadle@nvidia.com>
Reviewed-on: http://git-master/r/1295543
(cherry picked from commit e81693c6e087f8f10a985be83715042fc590d6db)
Reviewed-on: http://git-master/r/1282467
(cherry picked from commit 7b4e0db647572e82a8d53e823c36b465781f4942)
Reviewed-on: http://git-master/r/1321836
(cherry picked from commit 57dafc08a57ea768eb302bf1adb901425ce2f835)
Reviewed-on: http://git-master/r/1313469
Tested-by: Aparna Das <aparnad@nvidia.com>
Reviewed-by: Automatic_Commit_Validation_User
Reviewed-by: Richard Zhao <rizhao@nvidia.com>
GVS: Gerrit_Virtual_Submit
Reviewed-by: Terje Bergstrom <tbergstrom@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/vgpu/clk_vgpu.c')
-rw-r--r-- | drivers/gpu/nvgpu/vgpu/clk_vgpu.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/drivers/gpu/nvgpu/vgpu/clk_vgpu.c b/drivers/gpu/nvgpu/vgpu/clk_vgpu.c index fe5533b6..d728e02b 100644 --- a/drivers/gpu/nvgpu/vgpu/clk_vgpu.c +++ b/drivers/gpu/nvgpu/vgpu/clk_vgpu.c | |||
@@ -128,3 +128,26 @@ int vgpu_clk_get_freqs(struct device *dev, | |||
128 | 128 | ||
129 | return 0; | 129 | return 0; |
130 | } | 130 | } |
131 | |||
132 | int vgpu_clk_cap_rate(struct device *dev, unsigned long rate) | ||
133 | { | ||
134 | struct gk20a_platform *platform = gk20a_get_platform(dev); | ||
135 | struct gk20a *g = platform->g; | ||
136 | struct tegra_vgpu_cmd_msg msg = {}; | ||
137 | struct tegra_vgpu_gpu_clk_rate_params *p = &msg.params.gpu_clk_rate; | ||
138 | int err = 0; | ||
139 | |||
140 | gk20a_dbg_fn(""); | ||
141 | |||
142 | msg.cmd = TEGRA_VGPU_CMD_CAP_GPU_CLK_RATE; | ||
143 | msg.handle = vgpu_get_handle(g); | ||
144 | p->rate = (u32)rate; | ||
145 | err = vgpu_comm_sendrecv(&msg, sizeof(msg), sizeof(msg)); | ||
146 | err = err ? err : msg.ret; | ||
147 | if (err) { | ||
148 | nvgpu_err(g, "%s failed - %d", __func__, err); | ||
149 | return err; | ||
150 | } | ||
151 | |||
152 | return 0; | ||
153 | } | ||