diff options
author | Deepak Nibade <dnibade@nvidia.com> | 2017-05-16 09:33:02 -0400 |
---|---|---|
committer | mobile promotions <svcmobile_promotions@nvidia.com> | 2017-05-24 07:55:53 -0400 |
commit | 6d2d3a3d9345661bc14af06a8b4462495205b743 (patch) | |
tree | 0d8317f78658296c3ecb85027dc3529918516222 /drivers/gpu/nvgpu/tegra | |
parent | 1eace20876b4136a1edf8287a9f37a693218efa8 (diff) |
gpu: nvgpu: move linux clk calls to tegra specific file
clk_gm20b.c has number of calls specific to linux and
tegra-soc environment
In order to unify the driver, move all of those calls
to tegra/linux specific file tegra/linux/clk.c
All the clk_*() and tegra_dvfs_*() calls are now
abstracted behind GPU's clock operations and shoule be
accessed using g->ops.clk.<API> format
Remove <linux/clk.h> and <soc/tegra/tegra-dvfs.h> from
clk_gm20b.c
Remove <linux/version.h> from clk_gm20b.c too since
we only support k4.4 and higher version only
Jira NVGPU-49
Change-Id: Ib26811e0423bbd3868b9a46e662b80a8ca088dc5
Signed-off-by: Deepak Nibade <dnibade@nvidia.com>
Reviewed-on: http://git-master/r/1483092
Reviewed-by: mobile promotions <svcmobile_promotions@nvidia.com>
Tested-by: mobile promotions <svcmobile_promotions@nvidia.com>
Diffstat (limited to 'drivers/gpu/nvgpu/tegra')
-rw-r--r-- | drivers/gpu/nvgpu/tegra/linux/clk.c | 55 |
1 files changed, 55 insertions, 0 deletions
diff --git a/drivers/gpu/nvgpu/tegra/linux/clk.c b/drivers/gpu/nvgpu/tegra/linux/clk.c index a82076c7..775e5661 100644 --- a/drivers/gpu/nvgpu/tegra/linux/clk.c +++ b/drivers/gpu/nvgpu/tegra/linux/clk.c | |||
@@ -17,6 +17,9 @@ | |||
17 | */ | 17 | */ |
18 | 18 | ||
19 | #include <linux/clk.h> | 19 | #include <linux/clk.h> |
20 | #include <linux/version.h> | ||
21 | |||
22 | #include <soc/tegra/tegra-dvfs.h> | ||
20 | 23 | ||
21 | #include "clk.h" | 24 | #include "clk.h" |
22 | #include "gk20a/gk20a.h" | 25 | #include "gk20a/gk20a.h" |
@@ -71,8 +74,60 @@ static int nvgpu_linux_clk_set_rate(struct gk20a *g, | |||
71 | return ret; | 74 | return ret; |
72 | } | 75 | } |
73 | 76 | ||
77 | static unsigned long nvgpu_linux_get_fmax_at_vmin_safe(struct clk_gk20a *clk) | ||
78 | { | ||
79 | /* | ||
80 | * On Tegra GPU clock exposed to frequency governor is a shared user on | ||
81 | * GPCPLL bus (gbus). The latter can be accessed as GPU clock parent. | ||
82 | * Respectively the grandparent is PLL reference clock. | ||
83 | */ | ||
84 | return tegra_dvfs_get_fmax_at_vmin_safe_t( | ||
85 | clk_get_parent(clk->tegra_clk)); | ||
86 | } | ||
87 | |||
88 | static u32 nvgpu_linux_get_ref_clock_rate(struct gk20a *g) | ||
89 | { | ||
90 | struct clk *c; | ||
91 | |||
92 | c = clk_get_sys("gpu_ref", "gpu_ref"); | ||
93 | if (IS_ERR(c)) { | ||
94 | nvgpu_err(g, "failed to get GPCPLL reference clock"); | ||
95 | return 0; | ||
96 | } | ||
97 | |||
98 | return clk_get_rate(c); | ||
99 | } | ||
100 | |||
101 | static int nvgpu_linux_predict_mv_at_hz_cur_tfloor(struct clk_gk20a *clk, | ||
102 | unsigned long rate) | ||
103 | { | ||
104 | return tegra_dvfs_predict_mv_at_hz_cur_tfloor( | ||
105 | clk_get_parent(clk->tegra_clk), rate); | ||
106 | } | ||
107 | |||
108 | static unsigned long nvgpu_linux_get_maxrate(struct clk_gk20a *clk) | ||
109 | { | ||
110 | return tegra_dvfs_get_maxrate(clk_get_parent(clk->tegra_clk)); | ||
111 | } | ||
112 | |||
113 | static int nvgpu_linux_prepare_enable(struct clk_gk20a *clk) | ||
114 | { | ||
115 | return clk_prepare_enable(clk->tegra_clk); | ||
116 | } | ||
117 | |||
118 | static void nvgpu_linux_disable_unprepare(struct clk_gk20a *clk) | ||
119 | { | ||
120 | clk_disable_unprepare(clk->tegra_clk); | ||
121 | } | ||
122 | |||
74 | void nvgpu_linux_init_clk_support(struct gk20a *g) | 123 | void nvgpu_linux_init_clk_support(struct gk20a *g) |
75 | { | 124 | { |
76 | g->ops.clk.get_rate = nvgpu_linux_clk_get_rate; | 125 | g->ops.clk.get_rate = nvgpu_linux_clk_get_rate; |
77 | g->ops.clk.set_rate = nvgpu_linux_clk_set_rate; | 126 | g->ops.clk.set_rate = nvgpu_linux_clk_set_rate; |
127 | g->ops.clk.get_fmax_at_vmin_safe = nvgpu_linux_get_fmax_at_vmin_safe; | ||
128 | g->ops.clk.get_ref_clock_rate = nvgpu_linux_get_ref_clock_rate; | ||
129 | g->ops.clk.predict_mv_at_hz_cur_tfloor = nvgpu_linux_predict_mv_at_hz_cur_tfloor; | ||
130 | g->ops.clk.get_maxrate = nvgpu_linux_get_maxrate; | ||
131 | g->ops.clk.prepare_enable = nvgpu_linux_prepare_enable; | ||
132 | g->ops.clk.disable_unprepare = nvgpu_linux_disable_unprepare; | ||
78 | } | 133 | } |