lkml.org 
[lkml]   [2018]   [Jun]   [19]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
SubjectRe: [PATCH 2/4] clk: clk: Add clk_dflt_restore
From
Date
On 19/06/18 07:28, Keerthy wrote:
> The default restore context function enables or disables
> the clock based on the enable_count. This is done in cases
> where the clock context is lost and based on the enable_count
> the clock either needs to be enabled/disabled. This particularly
> helps restore the state of gate clocks.
>
> Signed-off-by: Keerthy <j-keerthy@ti.com>
> ---
> drivers/clk/clk.c | 19 +++++++++++++++++++
> include/linux/clk-provider.h | 2 ++
> 2 files changed, 21 insertions(+)
>
> diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c
> index 7347e06..c201b8b 100644
> --- a/drivers/clk/clk.c
> +++ b/drivers/clk/clk.c
> @@ -910,6 +910,25 @@ static int clk_core_enable_lock(struct clk_core *core)
> return ret;
> }
>
> +/**
> + * clk_dflt_restore_context - restore context for poweroff
> + * @hw: the clk_hw pointer of clock whose state is to be restored
> + *
> + * The default restore context function enables or disables
> + * the clock based on the enable_count. This is done in cases
> + * where the clock context is lost and based on the enable_count
> + * the clock either needs to be enabled/disabled. This particularly
> + * helps restore the state of gate clocks.
> + */
> +void clk_dflt_restore_context(struct clk_hw *hw)

I think the name of this function is wrong, it should be
clk_gate_restore_context, as only gate clocks are ever going to be using
this afaics.

-Tero

> +{
> + if (hw->clk->core->enable_count)
> + hw->clk->core->ops->enable(hw);
> + else
> + hw->clk->core->ops->disable(hw);
> +}
> +EXPORT_SYMBOL_GPL(clk_dflt_restore_context);
> +
> static int _clk_save_context(struct clk_core *clk)
> {
> struct clk_core *child;
> diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
> index 7f30d62..3e0c61a 100644
> --- a/include/linux/clk-provider.h
> +++ b/include/linux/clk-provider.h
> @@ -992,5 +992,7 @@ static inline void clk_writel(u32 val, u32 __iomem *reg)
>
> #endif /* platform dependent I/O accessors */
>
> +void clk_dflt_restore_context(struct clk_hw *hw);
> +
> #endif /* CONFIG_COMMON_CLK */
> #endif /* CLK_PROVIDER_H */
>

--
Texas Instruments Finland Oy, Porkkalankatu 22, 00180 Helsinki. Y-tunnus/Business ID: 0615521-4. Kotipaikka/Domicile: Helsinki

\
 
 \ /
  Last update: 2018-06-19 08:07    [W:0.113 / U:0.160 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site