On Mon, Jan 14, 2019 at 8:42 AM Lucas Stach <l.stach@xxxxxxxxxxxxxx> wrote:
>
> Closer to Linux kernel implementation and needed for imx8mq
> composite clock.
>
> Signed-off-by: Lucas Stach <l.stach@xxxxxxxxxxxxxx>
> ---
> drivers/clk/clk-divider.c | 30 ++++++++++++++++++++++--------
> include/linux/clk.h | 5 +++++
> 2 files changed, 27 insertions(+), 8 deletions(-)
>
> diff --git a/drivers/clk/clk-divider.c b/drivers/clk/clk-divider.c
> index 791e10ea99cd..7b1bdde1ce18 100644
> --- a/drivers/clk/clk-divider.c
> +++ b/drivers/clk/clk-divider.c
> @@ -20,6 +20,7 @@
> #include <linux/clk.h>
> #include <linux/err.h>
> #include <linux/log2.h>
> +#include <asm-generic/div64.h>
>
> #define div_mask(d) ((1 << ((d)->width)) - 1)
>
> @@ -56,17 +57,17 @@ static unsigned int _get_table_div(const struct clk_div_table *table,
> return 0;
> }
>
> -static unsigned int _get_div(struct clk_divider *divider, unsigned int val)
> +static unsigned int _get_div(const struct clk_div_table *table,
> + unsigned int val, unsigned long flags, u8 width)
> {
> - if (divider->flags & CLK_DIVIDER_ONE_BASED)
> + if (flags & CLK_DIVIDER_ONE_BASED)
> return val;
> - if (divider->flags & CLK_DIVIDER_POWER_OF_TWO)
> + if (flags & CLK_DIVIDER_POWER_OF_TWO)
> return 1 << val;
> - if (divider->table)
> - return _get_table_div(divider->table, val);
> + if (table)
> + return _get_table_div(table, val);
> return val + 1;
> }
> -
> static unsigned int _get_table_val(const struct clk_div_table *table,
> unsigned int div)
> {
> @@ -89,6 +90,18 @@ static unsigned int _get_val(struct clk_divider *divider, unsigned int div)
> return div - 1;
> }
>
> +unsigned long divider_recalc_rate(struct clk *clk, unsigned long parent_rate,
> + unsigned int val,
> + const struct clk_div_table *table,
> + unsigned long flags, unsigned long width)
> +{
> + unsigned int div;
> +
> + div = _get_div(table, val, flags, width);
> +
> + return DIV_ROUND_UP_ULL((u64)parent_rate, div);
I just rebased on latest 'next', but I don't seem to have the
definition for DIV_ROUND_UP_ULL(), which breaks the build. Is there a
patch that I am missing?
Thanks,
Andrey Smirnov
_______________________________________________
barebox mailing list
barebox@xxxxxxxxxxxxxxxxxxx
http://lists.infradead.org/mailman/listinfo/barebox
