62 lines
1.6 KiB
C
62 lines
1.6 KiB
C
|
/* linux/arch/arm/mach-s3c2416/setup-sdhci.c
|
||
|
|
*
|
||
|
|
* Copyright 2010 Promwad Innovation Company
|
||
|
|
* Yauhen Kharuzhy <yauhen.kharuzhy@promwad.com>
|
||
|
|
*
|
||
|
|
* S3C2416 - Helper functions for settign up SDHCI device(s) (HSMMC)
|
||
|
|
*
|
||
|
|
* Based on mach-s3c64xx/setup-sdhci.c
|
||
|
|
*
|
||
|
|
* This program is free software; you can redistribute it and/or modify
|
||
|
|
* it under the terms of the GNU General Public License version 2 as
|
||
|
|
* published by the Free Software Foundation.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <linux/kernel.h>
|
||
|
|
#include <linux/types.h>
|
||
|
|
#include <linux/interrupt.h>
|
||
|
|
#include <linux/platform_device.h>
|
||
|
|
#include <linux/io.h>
|
||
|
|
|
||
|
|
#include <linux/mmc/card.h>
|
||
|
|
#include <linux/mmc/host.h>
|
||
|
|
|
||
|
|
#include <plat/regs-sdhci.h>
|
||
|
|
#include <plat/sdhci.h>
|
||
|
|
|
||
|
|
/* clock sources for the mmc bus clock, order as for the ctrl2[5..4] */
|
||
|
|
|
||
|
|
char *s3c2416_hsmmc_clksrcs[4] = {
|
||
|
|
[0] = "hsmmc",
|
||
|
|
[1] = "hsmmc",
|
||
|
|
[2] = "hsmmc-if",
|
||
|
|
/* [3] = "48m", - note not successfully used yet */
|
||
|
|
};
|
||
|
|
|
||
|
|
void s3c2416_setup_sdhci_cfg_card(struct platform_device *dev,
|
||
|
|
void __iomem *r,
|
||
|
|
struct mmc_ios *ios,
|
||
|
|
struct mmc_card *card)
|
||
|
|
{
|
||
|
|
u32 ctrl2, ctrl3;
|
||
|
|
|
||
|
|
ctrl2 = __raw_readl(r + S3C_SDHCI_CONTROL2);
|
||
|
|
ctrl2 &= S3C_SDHCI_CTRL2_SELBASECLK_MASK;
|
||
|
|
ctrl2 |= (S3C64XX_SDHCI_CTRL2_ENSTAASYNCCLR |
|
||
|
|
S3C64XX_SDHCI_CTRL2_ENCMDCNFMSK |
|
||
|
|
S3C_SDHCI_CTRL2_ENFBCLKRX |
|
||
|
|
S3C_SDHCI_CTRL2_DFCNT_NONE |
|
||
|
|
S3C_SDHCI_CTRL2_ENCLKOUTHOLD);
|
||
|
|
|
||
|
|
if (ios->clock < 25 * 1000000)
|
||
|
|
ctrl3 = (S3C_SDHCI_CTRL3_FCSEL3 |
|
||
|
|
S3C_SDHCI_CTRL3_FCSEL2 |
|
||
|
|
S3C_SDHCI_CTRL3_FCSEL1 |
|
||
|
|
S3C_SDHCI_CTRL3_FCSEL0);
|
||
|
|
else
|
||
|
|
ctrl3 = (S3C_SDHCI_CTRL3_FCSEL1 | S3C_SDHCI_CTRL3_FCSEL0);
|
||
|
|
|
||
|
|
__raw_writel(ctrl2, r + S3C_SDHCI_CONTROL2);
|
||
|
|
__raw_writel(ctrl3, r + S3C_SDHCI_CONTROL3);
|
||
|
|
}
|