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authorTomeu Vizoso <tomeu.vizoso@collabora.com>2015-01-23 12:03:31 +0100
committerMichael Turquette <mturquette@linaro.org>2015-02-02 14:23:42 -0800
commit1c8e600440c7f5036bd9a94526d01e9c7cb68dca (patch)
tree36c9811e976332bc23a00a6fb216dce5e6b55a5a /arch/mips/alchemy
parentb09d6d99102504a929cfaba4cd0e07658d7f01d1 (diff)
downloadlinux-1c8e600440c7f5036bd9a94526d01e9c7cb68dca.tar.bz2
clk: Add rate constraints to clocks
Adds a way for clock consumers to set maximum and minimum rates. This can be used for thermal drivers to set minimum rates, or by misc. drivers to set maximum rates to assure a minimum performance level. Changes the signature of the determine_rate callback by adding the parameters min_rate and max_rate. Signed-off-by: Tomeu Vizoso <tomeu.vizoso@collabora.com> Signed-off-by: Stephen Boyd <sboyd@codeaurora.org> [sboyd@codeaurora.org: set req_rate in __clk_init] Signed-off-by: Michael Turquette <mturquette@linaro.org> [mturquette@linaro.org: min/max rate for sun6i_ahb1_clk_determine_rate migrated clk-private.h changes to clk.c]
Diffstat (limited to 'arch/mips/alchemy')
-rw-r--r--arch/mips/alchemy/common/clock.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/mips/alchemy/common/clock.c b/arch/mips/alchemy/common/clock.c
index 48a9dfc55b51..4e65404b3ba3 100644
--- a/arch/mips/alchemy/common/clock.c
+++ b/arch/mips/alchemy/common/clock.c
@@ -373,6 +373,8 @@ static long alchemy_calc_div(unsigned long rate, unsigned long prate,
}
static long alchemy_clk_fgcs_detr(struct clk_hw *hw, unsigned long rate,
+ unsigned long min_rate,
+ unsigned long max_rate,
unsigned long *best_parent_rate,
struct clk_hw **best_parent_clk,
int scale, int maxdiv)
@@ -546,6 +548,8 @@ static unsigned long alchemy_clk_fgv1_recalc(struct clk_hw *hw,
}
static long alchemy_clk_fgv1_detr(struct clk_hw *hw, unsigned long rate,
+ unsigned long min_rate,
+ unsigned long max_rate,
unsigned long *best_parent_rate,
struct clk_hw **best_parent_clk)
{
@@ -678,6 +682,8 @@ static unsigned long alchemy_clk_fgv2_recalc(struct clk_hw *hw,
}
static long alchemy_clk_fgv2_detr(struct clk_hw *hw, unsigned long rate,
+ unsigned long min_rate,
+ unsigned long max_rate,
unsigned long *best_parent_rate,
struct clk_hw **best_parent_clk)
{
@@ -897,6 +903,8 @@ static int alchemy_clk_csrc_setr(struct clk_hw *hw, unsigned long rate,
}
static long alchemy_clk_csrc_detr(struct clk_hw *hw, unsigned long rate,
+ unsigned long min_rate,
+ unsigned long max_rate,
unsigned long *best_parent_rate,
struct clk_hw **best_parent_clk)
{