From 744d5a5212936fd453bacc46be52e6aeef076a69 Mon Sep 17 00:00:00 2001 From: Terje Bergstrom Date: Fri, 10 Nov 2017 10:53:51 -0800 Subject: gpu: nvgpu: vgpu: Implement clk.get_maxfreq Modify HAL clk->get_maxfreq() signature to match the one in clk->set_rate() and clk->get_rate(). It allows support of multiple clocks. Implement clk.get_maxfreq operation for vgpu and use it to fill max_freq field in GPU characteristics query. JIRA NVGPU-388 Change-Id: I93bfc2aa76e38b8a5e0ac55d87c4e26df6fea77f Signed-off-by: Terje Bergstrom Reviewed-on: https://git-master.nvidia.com/r/1597329 Reviewed-by: mobile promotions Tested-by: mobile promotions --- drivers/gpu/nvgpu/common/linux/clk.c | 16 ++++++++++++++-- 1 file changed, 14 insertions(+), 2 deletions(-) (limited to 'drivers/gpu/nvgpu/common/linux') diff --git a/drivers/gpu/nvgpu/common/linux/clk.c b/drivers/gpu/nvgpu/common/linux/clk.c index a9888590..ea5b023d 100644 --- a/drivers/gpu/nvgpu/common/linux/clk.c +++ b/drivers/gpu/nvgpu/common/linux/clk.c @@ -106,9 +106,21 @@ static int nvgpu_linux_predict_mv_at_hz_cur_tfloor(struct clk_gk20a *clk, clk_get_parent(clk->tegra_clk), rate); } -static unsigned long nvgpu_linux_get_maxrate(struct clk_gk20a *clk) +static unsigned long nvgpu_linux_get_maxrate(struct gk20a *g, u32 api_domain) { - return tegra_dvfs_get_maxrate(clk_get_parent(clk->tegra_clk)); + int ret; + + switch (api_domain) { + case CTRL_CLK_DOMAIN_GPCCLK: + ret = tegra_dvfs_get_maxrate(clk_get_parent(g->clk.tegra_clk)); + break; + default: + nvgpu_err(g, "unknown clock: %u", api_domain); + ret = 0; + break; + } + + return ret; } static int nvgpu_linux_prepare_enable(struct clk_gk20a *clk) -- cgit v1.2.2