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 <mach/map.h>
13 #include <mach/regs-clock.h>
14 #include <plat/gpio-cfg.h>
15 #include <mach/gpio-samsung.h>
16 #include <linux/platform_data/ata-samsung_cf.h>
17
s3c64xx_ide_setup_gpio(void)18 void s3c64xx_ide_setup_gpio(void)
19 {
20 u32 reg;
21
22 reg = readl(S3C_MEM_SYS_CFG) & (~0x3f);
23
24 /* Independent CF interface, CF chip select configuration */
25 writel(reg | MEM_SYS_CFG_INDEP_CF |
26 MEM_SYS_CFG_EBI_FIX_PRI_CFCON, S3C_MEM_SYS_CFG);
27
28 s3c_gpio_cfgpin(S3C64XX_GPB(4), S3C_GPIO_SFN(4));
29
30 /* Set XhiDATA[15:0] pins as CF Data[15:0] */
31 s3c_gpio_cfgpin_range(S3C64XX_GPK(0), 16, S3C_GPIO_SFN(5));
32
33 /* Set XhiADDR[2:0] pins as CF ADDR[2:0] */
34 s3c_gpio_cfgpin_range(S3C64XX_GPL(0), 3, S3C_GPIO_SFN(6));
35
36 /* Set Xhi ctrl pins as CF ctrl pins(IORDY, IOWR, IORD, CE[0:1]) */
37 s3c_gpio_cfgpin(S3C64XX_GPM(5), S3C_GPIO_SFN(1));
38 s3c_gpio_cfgpin_range(S3C64XX_GPM(0), 5, S3C_GPIO_SFN(6));
39 }
40
