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mmc: tmio: Extract bus_width modifications to a separate function

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Move code for bus_width modification, out of the ->set_ios() callback
and into a separate function, to simplify code.

Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
Acked-by: Geert Uytterhoeven <geert+renesas@glider.be>
This commit is contained in:
Ulf Hansson 2013-10-24 17:42:53 +02:00
parent 0369483efc
commit 9ae4ed7d30
1 changed files with 15 additions and 10 deletions
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25
drivers/mmc/host/tmio_mmc_pio.c
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@ -831,6 +831,19 @@ static void tmio_mmc_power_off(struct tmio_mmc_host *host)
host->set_pwr(host->pdev, 0);
}
static void tmio_mmc_set_bus_width(struct tmio_mmc_host *host,
unsigned char bus_width)
{
switch (bus_width) {
case MMC_BUS_WIDTH_1:
sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x80e0);
break;
case MMC_BUS_WIDTH_4:
sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x00e0);
break;
}
}
/* Set MMC clock / power.
* Note: This controller uses a simple divider scheme therefore it cannot
* run a MMC card at full speed (20MHz). The max clock is 24MHz on SD, but as
@ -914,16 +927,8 @@ static void tmio_mmc_set_ios(struct mmc_host *mmc, struct mmc_ios *ios)
}
}
if (host->power != TMIO_MMC_OFF_STOP) {
switch (ios->bus_width) {
case MMC_BUS_WIDTH_1:
sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x80e0);
break;
case MMC_BUS_WIDTH_4:
sd_ctrl_write16(host, CTL_SD_MEM_CARD_OPT, 0x00e0);
break;
}
}
if (host->power != TMIO_MMC_OFF_STOP)
tmio_mmc_set_bus_width(host, ios->bus_width);
/* Let things settle. delay taken from winCE driver */
udelay(140);