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author | Olof Johansson <olof@lixom.net> | 2012-09-21 08:16:43 +0400 |
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committer | Olof Johansson <olof@lixom.net> | 2012-09-21 08:16:43 +0400 |
commit | ea832c41dacbc4a5f3888d9ef7c38213914aba2a (patch) | |
tree | bee97817d9a55f000e2bec5fa5d62d325050e6a6 /drivers/clk/clk.c | |
parent | b74aae9a2074e1caa2e40bf119f3a633f77c94e4 (diff) | |
parent | 84bae6c379e362aa017efd417199f51d5c2273ac (diff) | |
download | linux-ea832c41dacbc4a5f3888d9ef7c38213914aba2a.tar.xz |
Merge branch 'next/dt' into next/multiplatform
* next/dt: (182 commits)
ARM: tegra: Add Avionic Design Tamonten Evaluation Carrier support
ARM: tegra: Add Avionic Design Medcom-Wide support
ARM: tegra: Add Avionic Design Plutux support
ARM: tegra: Add Avionic Design Tamonten support
ARM: tegra: dts: Add pwm label
ARM: dt: tegra: whistler: configure power off
ARM: mxs: m28evk: Disable OCOTP OUI loading
ARM: imx6q: use pll2_pfd2_396m as the enfc_sel's parent
ARM: dts: imx6q-sabrelite: add usbotg pinctrl support
ARM: dts: imx23-olinuxino: Add USB host support
ARM: dts: imx6q-sabrelite: add usbmisc device
ARM: dts: mx23: Add USB resources
ARM: dts: mxs: Add ethernetX to macX aliases
ARM: msm: Remove non-DT targets from 8960
ARM: msm: Add DT support for 8960
ARM: msm: Move io mapping prototypes to common.h
ARM: msm: Rename board-msm8x60 to signify its DT only status
ARM: msm: Make 8660 a DT only target
ARM: msm: Move 8660 to DT timer
ARM: msm: Add DT support to msm_timer
...
Diffstat (limited to 'drivers/clk/clk.c')
-rw-r--r-- | drivers/clk/clk.c | 57 |
1 files changed, 38 insertions, 19 deletions
diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index efdfd009c270..56e4495ebeb1 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -558,25 +558,6 @@ int clk_enable(struct clk *clk) EXPORT_SYMBOL_GPL(clk_enable); /** - * clk_get_rate - return the rate of clk - * @clk: the clk whose rate is being returned - * - * Simply returns the cached rate of the clk. Does not query the hardware. If - * clk is NULL then returns 0. - */ -unsigned long clk_get_rate(struct clk *clk) -{ - unsigned long rate; - - mutex_lock(&prepare_lock); - rate = __clk_get_rate(clk); - mutex_unlock(&prepare_lock); - - return rate; -} -EXPORT_SYMBOL_GPL(clk_get_rate); - -/** * __clk_round_rate - round the given rate for a clk * @clk: round the rate of this clock * @@ -702,6 +683,30 @@ static void __clk_recalc_rates(struct clk *clk, unsigned long msg) } /** + * clk_get_rate - return the rate of clk + * @clk: the clk whose rate is being returned + * + * Simply returns the cached rate of the clk, unless CLK_GET_RATE_NOCACHE flag + * is set, which means a recalc_rate will be issued. + * If clk is NULL then returns 0. + */ +unsigned long clk_get_rate(struct clk *clk) +{ + unsigned long rate; + + mutex_lock(&prepare_lock); + + if (clk && (clk->flags & CLK_GET_RATE_NOCACHE)) + __clk_recalc_rates(clk, 0); + + rate = __clk_get_rate(clk); + mutex_unlock(&prepare_lock); + + return rate; +} +EXPORT_SYMBOL_GPL(clk_get_rate); + +/** * __clk_speculate_rates * @clk: first clk in the subtree * @parent_rate: the "future" rate of clk's parent @@ -1582,6 +1587,20 @@ struct clk *of_clk_src_simple_get(struct of_phandle_args *clkspec, } EXPORT_SYMBOL_GPL(of_clk_src_simple_get); +struct clk *of_clk_src_onecell_get(struct of_phandle_args *clkspec, void *data) +{ + struct clk_onecell_data *clk_data = data; + unsigned int idx = clkspec->args[0]; + + if (idx >= clk_data->clk_num) { + pr_err("%s: invalid clock index %d\n", __func__, idx); + return ERR_PTR(-EINVAL); + } + + return clk_data->clks[idx]; +} +EXPORT_SYMBOL_GPL(of_clk_src_onecell_get); + /** * of_clk_add_provider() - Register a clock provider for a node * @np: Device node pointer associated with clock provider |