1 /* linux/arch/arm/mach-s3c6410/setup-sdhci.c
3 * Copyright 2008 Simtec Electronics
4 * Copyright 2008 Simtec Electronics
5 * Ben Dooks <ben@simtec.co.uk>
6 * http://armlinux.simtec.co.uk/
8 * S3C6410 - Helper functions for settign up SDHCI device(s) (HSMMC)
10 * This program is free software; you can redistribute it and/or modify
11 * it under the terms of the GNU General Public License version 2 as
12 * published by the Free Software Foundation.
15 #include <linux/kernel.h>
16 #include <linux/types.h>
17 #include <linux/interrupt.h>
18 #include <linux/platform_device.h>
21 #include <linux/mmc/card.h>
22 #include <linux/mmc/host.h>
24 #include <mach/gpio.h>
25 #include <plat/gpio-cfg.h>
26 #include <plat/regs-sdhci.h>
27 #include <plat/sdhci.h>
29 /* clock sources for the mmc bus clock, order as for the ctrl2[5..4] */
31 char *s3c6410_hsmmc_clksrcs
[4] = {
35 /* [3] = "48m", - note not succesfully used yet */
38 void s3c6410_setup_sdhci0_cfg_gpio(struct platform_device
*dev
, int width
)
43 end
= S3C64XX_GPG(2 + width
);
45 /* Set all the necessary GPG pins to special-function 0 */
46 for (gpio
= S3C64XX_GPG(0); gpio
< end
; gpio
++) {
47 s3c_gpio_cfgpin(gpio
, S3C_GPIO_SFN(2));
48 s3c_gpio_setpull(gpio
, S3C_GPIO_PULL_NONE
);
51 s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP
);
52 s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(2));
55 void s3c6410_setup_sdhci0_cfg_card(struct platform_device
*dev
,
58 struct mmc_card
*card
)
62 /* don't need to alter anything acording to card-type */
64 writel(S3C64XX_SDHCI_CONTROL4_DRIVE_9mA
, r
+ S3C64XX_SDHCI_CONTROL4
);
66 ctrl2
= readl(r
+ S3C_SDHCI_CONTROL2
);
67 ctrl2
&= S3C_SDHCI_CTRL2_SELBASECLK_MASK
;
68 ctrl2
|= (S3C64XX_SDHCI_CTRL2_ENSTAASYNCCLR
|
69 S3C64XX_SDHCI_CTRL2_ENCMDCNFMSK
|
70 S3C_SDHCI_CTRL2_ENFBCLKRX
|
71 S3C_SDHCI_CTRL2_DFCNT_NONE
|
72 S3C_SDHCI_CTRL2_ENCLKOUTHOLD
);
74 if (ios
->clock
< 25 * 1000000)
75 ctrl3
= (S3C_SDHCI_CTRL3_FCSEL3
|
76 S3C_SDHCI_CTRL3_FCSEL2
|
77 S3C_SDHCI_CTRL3_FCSEL1
|
78 S3C_SDHCI_CTRL3_FCSEL0
);
80 ctrl3
= (S3C_SDHCI_CTRL3_FCSEL1
| S3C_SDHCI_CTRL3_FCSEL0
);
82 printk(KERN_INFO
"%s: CTRL 2=%08x, 3=%08x\n", __func__
, ctrl2
, ctrl3
);
83 writel(ctrl2
, r
+ S3C_SDHCI_CONTROL2
);
84 writel(ctrl3
, r
+ S3C_SDHCI_CONTROL3
);
87 void s3c6410_setup_sdhci1_cfg_gpio(struct platform_device
*dev
, int width
)
92 end
= S3C64XX_GPH(2 + width
);
94 /* Set all the necessary GPG pins to special-function 0 */
95 for (gpio
= S3C64XX_GPH(0); gpio
< end
; gpio
++) {
96 s3c_gpio_cfgpin(gpio
, S3C_GPIO_SFN(2));
97 s3c_gpio_setpull(gpio
, S3C_GPIO_PULL_NONE
);
100 s3c_gpio_setpull(S3C64XX_GPG(6), S3C_GPIO_PULL_UP
);
101 s3c_gpio_cfgpin(S3C64XX_GPG(6), S3C_GPIO_SFN(3));