Re: [PATCH v3 5/6] mmc: renesas_sdhi: merge clk_{start,stop} functions to set_clock

From: Ulf Hansson
Date: Thu Aug 30 2018 - 08:30:27 EST


On 23 August 2018 at 06:44, Masahiro Yamada
<yamada.masahiro@xxxxxxxxxxxxx> wrote:
> renesas_sdhi_clk_start() and renesas_sdhi_clk_stop() are now only
> called from renesas_sdhi_set_clock(). Merge them.
>
> Signed-off-by: Masahiro Yamada <yamada.masahiro@xxxxxxxxxxxxx>

Applied for next, thanks!

Kind regards
Uffe

> ---
>
> Changes in v3: None
> Changes in v2: None
>
> drivers/mmc/host/renesas_sdhi_core.c | 38 ++++++++++++------------------------
> 1 file changed, 12 insertions(+), 26 deletions(-)
>
> diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c
> index cb6e889..0e88737 100644
> --- a/drivers/mmc/host/renesas_sdhi_core.c
> +++ b/drivers/mmc/host/renesas_sdhi_core.c
> @@ -155,35 +155,17 @@ static unsigned int renesas_sdhi_clk_update(struct tmio_mmc_host *host,
> return ret == 0 ? best_freq : clk_get_rate(priv->clk);
> }
>
> -static void renesas_sdhi_clk_start(struct tmio_mmc_host *host)
> +static void renesas_sdhi_set_clock(struct tmio_mmc_host *host,
> + unsigned int new_clock)
> {
> - sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, CLK_CTL_SCLKEN |
> - sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
> -
> - /* HW engineers overrode docs: no sleep needed on R-Car2+ */
> - if (!(host->pdata->flags & TMIO_MMC_MIN_RCAR2))
> - usleep_range(10000, 11000);
> -}
> + u32 clk = 0, clock;
>
> -static void renesas_sdhi_clk_stop(struct tmio_mmc_host *host)
> -{
> sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, ~CLK_CTL_SCLKEN &
> sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
>
> - /* HW engineers overrode docs: no sleep needed on R-Car2+ */
> - if (!(host->pdata->flags & TMIO_MMC_MIN_RCAR2))
> - usleep_range(10000, 11000);
> -}
> -
> -static void renesas_sdhi_set_clock(struct tmio_mmc_host *host,
> - unsigned int new_clock)
> -{
> - u32 clk = 0, clock;
> + if (new_clock == 0)
> + goto out;
>
> - if (new_clock == 0) {
> - renesas_sdhi_clk_stop(host);
> - return;
> - }
> /*
> * Both HS400 and HS200/SD104 set 200MHz, but some devices need to
> * set 400MHz to distinguish the CPG settings in HS400.
> @@ -206,13 +188,17 @@ static void renesas_sdhi_set_clock(struct tmio_mmc_host *host,
> clk &= ~0xff;
> }
>
> - sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, ~CLK_CTL_SCLKEN &
> - sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
> sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, clk & CLK_CTL_DIV_MASK);
> if (!(host->pdata->flags & TMIO_MMC_MIN_RCAR2))
> usleep_range(10000, 11000);
>
> - renesas_sdhi_clk_start(host);
> + sd_ctrl_write16(host, CTL_SD_CARD_CLK_CTL, CLK_CTL_SCLKEN |
> + sd_ctrl_read16(host, CTL_SD_CARD_CLK_CTL));
> +
> +out:
> + /* HW engineers overrode docs: no sleep needed on R-Car2+ */
> + if (!(host->pdata->flags & TMIO_MMC_MIN_RCAR2))
> + usleep_range(10000, 11000);
> }
>
> static void renesas_sdhi_clk_disable(struct tmio_mmc_host *host)
> --
> 2.7.4
>