linux-kernel - Re: [PATCH 2/2] clk: bcm2835: Reuse CLK_DIVIDER_MAX_AT_ZERO for recalc

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Message-ID: <20160216214509.2278.72829@quark.deferred.io>
Date:	Tue, 16 Feb 2016 13:45:09 -0800
From:	Michael Turquette <mturquette@...libre.com>
To:	Eric Anholt <eric@...olt.net>, linux-clk@...r.kernel.org
Cc:	linux-rpi-kernel@...ts.infradead.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	"Stephen Warren" <swarren@...dotorg.org>,
	"Lee Jones" <lee@...nel.org>,
	"Stephen Boyd" <sboyd@...eaurora.org>,
	"Eric Anholt" <eric@...olt.net>
Subject: Re: [PATCH 2/2] clk: bcm2835: Reuse CLK_DIVIDER_MAX_AT_ZERO for recalc_rate()

Quoting Eric Anholt (2016-02-15 19:03:58)
> We were rolling this ourselves, but clk-divider can do it now.
> 
> Signed-off-by: Eric Anholt <eric@...olt.net>

Applied to clk-next.

Regards,
Mike

> ---
>  drivers/clk/bcm/clk-bcm2835.c | 13 ++-----------
>  1 file changed, 2 insertions(+), 11 deletions(-)
> 
> diff --git a/drivers/clk/bcm/clk-bcm2835.c b/drivers/clk/bcm/clk-bcm2835.c
> index 9f4df8f..353e438 100644
> --- a/drivers/clk/bcm/clk-bcm2835.c
> +++ b/drivers/clk/bcm/clk-bcm2835.c
> @@ -1060,16 +1060,7 @@ static long bcm2835_pll_divider_round_rate(struct clk_hw *hw,
>  static unsigned long bcm2835_pll_divider_get_rate(struct clk_hw *hw,
>                                                   unsigned long parent_rate)
>  {
> -       struct bcm2835_pll_divider *divider = bcm2835_pll_divider_from_hw(hw);
> -       struct bcm2835_cprman *cprman = divider->cprman;
> -       const struct bcm2835_pll_divider_data *data = divider->data;
> -       u32 div = cprman_read(cprman, data->a2w_reg);
> -
> -       div &= (1 << A2W_PLL_DIV_BITS) - 1;
> -       if (div == 0)
> -               div = 256;
> -
> -       return parent_rate / div;
> +       return clk_divider_ops.recalc_rate(hw, parent_rate);
>  }
>  
>  static void bcm2835_pll_divider_off(struct clk_hw *hw)
> @@ -1430,7 +1421,7 @@ bcm2835_register_pll_divider(struct bcm2835_cprman *cprman,
>         divider->div.reg = cprman->regs + data->a2w_reg;
>         divider->div.shift = A2W_PLL_DIV_SHIFT;
>         divider->div.width = A2W_PLL_DIV_BITS;
> -       divider->div.flags = 0;
> +       divider->div.flags = CLK_DIVIDER_MAX_AT_ZERO;
>         divider->div.lock = &cprman->regs_lock;
>         divider->div.hw.init = &init;
>         divider->div.table = NULL;
> -- 
> 2.7.0
>