e6f66a9f96
This patch adds sdhci platform helpers required by sdhci-s3c driver. Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com> Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com> Signed-off-by: Ben Dooks <ben-linux@fluff.org>
63 lines
1.7 KiB
C
63 lines
1.7 KiB
C
/* linux/arch/arm/mach-s5pv210/setup-sdhci.c
|
|
*
|
|
* Copyright (c) 2009-2010 Samsung Electronics Co., Ltd.
|
|
* http://www.samsung.com/
|
|
*
|
|
* S5PV210 - Helper functions for settign up SDHCI device(s) (HSMMC)
|
|
*
|
|
* 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 *s5pv210_hsmmc_clksrcs[4] = {
|
|
[0] = "hsmmc", /* HCLK */
|
|
[1] = "hsmmc", /* HCLK */
|
|
[2] = "sclk_mmc", /* mmc_bus */
|
|
/*[4] = reserved */
|
|
};
|
|
|
|
void s5pv210_setup_sdhci_cfg_card(struct platform_device *dev,
|
|
void __iomem *r,
|
|
struct mmc_ios *ios,
|
|
struct mmc_card *card)
|
|
{
|
|
u32 ctrl2, ctrl3;
|
|
|
|
/* don't need to alter anything acording to card-type */
|
|
|
|
writel(S3C64XX_SDHCI_CONTROL4_DRIVE_9mA, r + S3C64XX_SDHCI_CONTROL4);
|
|
|
|
ctrl2 = 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);
|
|
|
|
writel(ctrl2, r + S3C_SDHCI_CONTROL2);
|
|
writel(ctrl3, r + S3C_SDHCI_CONTROL3);
|
|
}
|