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Commit 9ae4ed7d authored by Ulf Hansson's avatar Ulf Hansson
Browse files

mmc: tmio: Extract bus_width modifications to a separate function 



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

Signed-off-by: default avatarUlf Hansson <ulf.hansson@linaro.org>
Acked-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
parent 0369483e

drivers/mmc/host/tmio_mmc_pio.c

+15 −10
Original line number Diff line number Diff line
@@ -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);