diff options
| author | Masahiro Yamada <yamada.masahiro@socionext.com> | 2018-08-23 07:44:19 +0300 |
|---|---|---|
| committer | Ulf Hansson <ulf.hansson@linaro.org> | 2018-10-08 12:40:43 +0300 |
| commit | 68f83127fe750c8b270361f4353cc9d76b0286d6 (patch) | |
| tree | 0f2f1d09a6dee826230e3663180b4a474e4f244d /drivers/mmc/host/renesas_sdhi_core.c | |
| parent | b85c997d2cfefe7d1f706b85ae46e35a50e3131c (diff) | |
| download | linux-68f83127fe750c8b270361f4353cc9d76b0286d6.tar.xz | |
mmc: renesas_sdhi: merge clk_{start,stop} functions to set_clock
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@socionext.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Diffstat (limited to 'drivers/mmc/host/renesas_sdhi_core.c')
| -rw-r--r-- | drivers/mmc/host/renesas_sdhi_core.c | 38 |
1 files changed, 12 insertions, 26 deletions
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c index c2c0e444cfc9..38a912065494 100644 --- a/drivers/mmc/host/renesas_sdhi_core.c +++ b/drivers/mmc/host/renesas_sdhi_core.c @@ -152,35 +152,17 @@ 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. @@ -203,13 +185,17 @@ 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) |