1 // SPDX-License-Identifier: GPL-2.0
2 //
3 // Copyright (c) 2010 Samsung Electronics Co., Ltd.
4 // http://www.samsung.com/
5 //
6 // S3C64XX setup information for IDE
7
8 #include <linux/kernel.h>
9 #include <linux/gpio.h>
10 #include <linux/io.h>
11
12 #include <linux/platform_data/ata-samsung_cf.h>
13
14 #include "map.h"
15 #include "regs-clock.h"
16 #include "gpio-cfg.h"
17 #include "gpio-samsung.h"
18
s3c64xx_ide_setup_gpio(void)19 void s3c64xx_ide_setup_gpio(void)
20 {
21 u32 reg;
22
23 reg = readl(S3C_MEM_SYS_CFG) & (~0x3f);
24
25 /* Independent CF interface, CF chip select configuration */
26 writel(reg | MEM_SYS_CFG_INDEP_CF |
27 MEM_SYS_CFG_EBI_FIX_PRI_CFCON, S3C_MEM_SYS_CFG);
28
29 s3c_gpio_cfgpin(S3C64XX_GPB(4), S3C_GPIO_SFN(4));
30
31 /* Set XhiDATA[15:0] pins as CF Data[15:0] */
32 s3c_gpio_cfgpin_range(S3C64XX_GPK(0), 16, S3C_GPIO_SFN(5));
33
34 /* Set XhiADDR[2:0] pins as CF ADDR[2:0] */
35 s3c_gpio_cfgpin_range(S3C64XX_GPL(0), 3, S3C_GPIO_SFN(6));
36
37 /* Set Xhi ctrl pins as CF ctrl pins(IORDY, IOWR, IORD, CE[0:1]) */
38 s3c_gpio_cfgpin(S3C64XX_GPM(5), S3C_GPIO_SFN(1));
39 s3c_gpio_cfgpin_range(S3C64XX_GPM(0), 5, S3C_GPIO_SFN(6));
40 }
41