From d730381f938e67313968c76b34fec0c6f79f0532 Mon Sep 17 00:00:00 2001 From: Seshendra Gadagottu Date: Tue, 26 Jan 2016 17:53:12 -0800 Subject: gpu: nvgpu: gp10b: add delay cycles before engine gating For copy engine, add 16 clock cycle delay before engine clock gating. Bug 1717152 Change-Id: Ife92299c052f44000bc0d900f0129a2eab13f3b5 Signed-off-by: Seshendra Gadagottu Reviewed-on: http://git-master/r/998408 GVS: Gerrit_Virtual_Submit Reviewed-by: Terje Bergstrom --- drivers/gpu/nvgpu/gp10b/therm_gp10b.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) (limited to 'drivers/gpu/nvgpu/gp10b/therm_gp10b.c') diff --git a/drivers/gpu/nvgpu/gp10b/therm_gp10b.c b/drivers/gpu/nvgpu/gp10b/therm_gp10b.c index 7bf0c0e5..687593b0 100644 --- a/drivers/gpu/nvgpu/gp10b/therm_gp10b.c +++ b/drivers/gpu/nvgpu/gp10b/therm_gp10b.c @@ -78,8 +78,22 @@ static int gp10b_init_therm_setup_hw(struct gk20a *g) return 0; } +static int gp10b_update_therm_gate_ctrl(struct gk20a *g) +{ + u32 gate_ctrl; + + gate_ctrl = gk20a_readl(g, therm_gate_ctrl_r(ENGINE_CE2_GK20A)); + gate_ctrl = set_field(gate_ctrl, + therm_gate_ctrl_eng_delay_before_m(), + therm_gate_ctrl_eng_delay_before_f(4)); + gk20a_writel(g, therm_gate_ctrl_r(ENGINE_CE2_GK20A), gate_ctrl); + + return 0; +} + void gp10b_init_therm_ops(struct gpu_ops *gops) { gops->therm.init_therm_setup_hw = gp10b_init_therm_setup_hw; + gops->therm.update_therm_gate_ctrl = gp10b_update_therm_gate_ctrl; } -- cgit v1.2.2