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));