arch/arm/mach-exynos/mach-armlex4210.c

   1 /* linux/arch/arm/mach-exynos4/mach-armlex4210.c
   2  *
   3  * Copyright (c) 2011 Samsung Electronics Co., Ltd.
   4  *              http://www.samsung.com
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License version 2 as
   8  * published by the Free Software Foundation.
   9 */
  10
  11 #include <linux/gpio.h>
  12 #include <linux/io.h>
  13 #include <linux/mmc/host.h>
  14 #include <linux/platform_device.h>
  15 #include <linux/serial_core.h>
  16 #include <linux/smsc911x.h>
  17
  18 #include <asm/mach/arch.h>
  19 #include <asm/hardware/gic.h>
  20 #include <asm/mach-types.h>
  21
  22 #include <plat/cpu.h>
  23 #include <plat/devs.h>
  24 #include <plat/gpio-cfg.h>
  25 #include <plat/regs-serial.h>
  26 #include <plat/regs-srom.h>
  27 #include <plat/sdhci.h>
  28
  29 #include <mach/map.h>
  30
  31 #include "common.h"
  32
  33 /* Following are default values for UCON, ULCON and UFCON UART registers */
  34 #define ARMLEX4210_UCON_DEFAULT (S3C2410_UCON_TXILEVEL |        \
  35                                  S3C2410_UCON_RXILEVEL |        \
  36                                  S3C2410_UCON_TXIRQMODE |       \
  37                                  S3C2410_UCON_RXIRQMODE |       \
  38                                  S3C2410_UCON_RXFIFO_TOI |      \
  39                                  S3C2443_UCON_RXERR_IRQEN)
  40
  41 #define ARMLEX4210_ULCON_DEFAULT        S3C2410_LCON_CS8
  42
  43 #define ARMLEX4210_UFCON_DEFAULT        (S3C2410_UFCON_FIFOMODE |       \
  44                                  S5PV210_UFCON_TXTRIG4 |        \
  45                                  S5PV210_UFCON_RXTRIG4)
  46
  47 static struct s3c2410_uartcfg armlex4210_uartcfgs[] __initdata = {
  48         [0] = {
  49                 .hwport         = 0,
  50                 .flags          = 0,
  51                 .ucon           = ARMLEX4210_UCON_DEFAULT,
  52                 .ulcon          = ARMLEX4210_ULCON_DEFAULT,
  53                 .ufcon          = ARMLEX4210_UFCON_DEFAULT,
  54         },
  55         [1] = {
  56                 .hwport         = 1,
  57                 .flags          = 0,
  58                 .ucon           = ARMLEX4210_UCON_DEFAULT,
  59                 .ulcon          = ARMLEX4210_ULCON_DEFAULT,
  60                 .ufcon          = ARMLEX4210_UFCON_DEFAULT,
  61         },
  62         [2] = {
  63                 .hwport         = 2,
  64                 .flags          = 0,
  65                 .ucon           = ARMLEX4210_UCON_DEFAULT,
  66                 .ulcon          = ARMLEX4210_ULCON_DEFAULT,
  67                 .ufcon          = ARMLEX4210_UFCON_DEFAULT,
  68         },
  69         [3] = {
  70                 .hwport         = 3,
  71                 .flags          = 0,
  72                 .ucon           = ARMLEX4210_UCON_DEFAULT,
  73                 .ulcon          = ARMLEX4210_ULCON_DEFAULT,
  74                 .ufcon          = ARMLEX4210_UFCON_DEFAULT,
  75         },
  76 };
  77
  78 static struct s3c_sdhci_platdata armlex4210_hsmmc0_pdata __initdata = {
  79         .cd_type                = S3C_SDHCI_CD_PERMANENT,
  80 #ifdef CONFIG_EXYNOS4_SDHCI_CH0_8BIT
  81         .max_width              = 8,
  82         .host_caps              = MMC_CAP_8_BIT_DATA,
  83 #endif
  84 };
  85
  86 static struct s3c_sdhci_platdata armlex4210_hsmmc2_pdata __initdata = {
  87         .cd_type                = S3C_SDHCI_CD_GPIO,
  88         .ext_cd_gpio            = EXYNOS4_GPX2(5),
  89         .ext_cd_gpio_invert     = 1,
  90         .max_width              = 4,
  91 };
  92
  93 static struct s3c_sdhci_platdata armlex4210_hsmmc3_pdata __initdata = {
  94         .cd_type                = S3C_SDHCI_CD_PERMANENT,
  95         .max_width              = 4,
  96 };
  97
  98 static void __init armlex4210_sdhci_init(void)
  99 {
 100         s3c_sdhci0_set_platdata(&armlex4210_hsmmc0_pdata);
 101         s3c_sdhci2_set_platdata(&armlex4210_hsmmc2_pdata);
 102         s3c_sdhci3_set_platdata(&armlex4210_hsmmc3_pdata);
 103 }
 104
 105 static void __init armlex4210_wlan_init(void)
 106 {
 107         /* enable */
 108         s3c_gpio_cfgpin(EXYNOS4_GPX2(0), S3C_GPIO_SFN(0xf));
 109         s3c_gpio_setpull(EXYNOS4_GPX2(0), S3C_GPIO_PULL_UP);
 110
 111         /* reset */
 112         s3c_gpio_cfgpin(EXYNOS4_GPX1(6), S3C_GPIO_SFN(0xf));
 113         s3c_gpio_setpull(EXYNOS4_GPX1(6), S3C_GPIO_PULL_UP);
 114
 115         /* wakeup */
 116         s3c_gpio_cfgpin(EXYNOS4_GPX1(5), S3C_GPIO_SFN(0xf));
 117         s3c_gpio_setpull(EXYNOS4_GPX1(5), S3C_GPIO_PULL_UP);
 118 }
 119
 120 static struct resource armlex4210_smsc911x_resources[] = {
 121         [0] = DEFINE_RES_MEM(EXYNOS4_PA_SROM_BANK(3), SZ_64K),
 122         [1] = DEFINE_RES_NAMED(IRQ_EINT(27), 1, NULL, IORESOURCE_IRQ \
 123                                         | IRQF_TRIGGER_HIGH),
 124 };
 125
 126 static struct smsc911x_platform_config smsc9215_config = {
 127         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
 128         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
 129         .flags          = SMSC911X_USE_16BIT | SMSC911X_FORCE_INTERNAL_PHY,
 130         .phy_interface  = PHY_INTERFACE_MODE_MII,
 131         .mac            = {0x00, 0x80, 0x00, 0x23, 0x45, 0x67},
 132 };
 133
 134 static struct platform_device armlex4210_smsc911x = {
 135         .name           = "smsc911x",
 136         .id             = -1,
 137         .num_resources  = ARRAY_SIZE(armlex4210_smsc911x_resources),
 138         .resource       = armlex4210_smsc911x_resources,
 139         .dev            = {
 140                 .platform_data  = &smsc9215_config,
 141         },
 142 };
 143
 144 static struct platform_device *armlex4210_devices[] __initdata = {
 145         &s3c_device_hsmmc0,
 146         &s3c_device_hsmmc2,
 147         &s3c_device_hsmmc3,
 148         &s3c_device_rtc,
 149         &s3c_device_wdt,
 150         &samsung_asoc_dma,
 151         &armlex4210_smsc911x,
 152         &exynos4_device_ahci,
 153 };
 154
 155 static void __init armlex4210_smsc911x_init(void)
 156 {
 157         u32 cs1;
 158
 159         /* configure nCS1 width to 16 bits */
 160         cs1 = __raw_readl(S5P_SROM_BW) &
 161                 ~(S5P_SROM_BW__CS_MASK << S5P_SROM_BW__NCS1__SHIFT);
 162         cs1 |= ((1 << S5P_SROM_BW__DATAWIDTH__SHIFT) |
 163                 (0 << S5P_SROM_BW__WAITENABLE__SHIFT) |
 164                 (1 << S5P_SROM_BW__ADDRMODE__SHIFT) |
 165                 (1 << S5P_SROM_BW__BYTEENABLE__SHIFT)) <<
 166                 S5P_SROM_BW__NCS1__SHIFT;
 167         __raw_writel(cs1, S5P_SROM_BW);
 168
 169         /* set timing for nCS1 suitable for ethernet chip */
 170         __raw_writel((0x1 << S5P_SROM_BCX__PMC__SHIFT) |
 171                      (0x9 << S5P_SROM_BCX__TACP__SHIFT) |
 172                      (0xc << S5P_SROM_BCX__TCAH__SHIFT) |
 173                      (0x1 << S5P_SROM_BCX__TCOH__SHIFT) |
 174                      (0x6 << S5P_SROM_BCX__TACC__SHIFT) |
 175                      (0x1 << S5P_SROM_BCX__TCOS__SHIFT) |
 176                      (0x1 << S5P_SROM_BCX__TACS__SHIFT), S5P_SROM_BC1);
 177 }
 178
 179 static void __init armlex4210_map_io(void)
 180 {
 181         exynos_init_io(NULL, 0);
 182         s3c24xx_init_clocks(24000000);
 183         s3c24xx_init_uarts(armlex4210_uartcfgs,
 184                            ARRAY_SIZE(armlex4210_uartcfgs));
 185 }
 186
 187 static void __init armlex4210_machine_init(void)
 188 {
 189         armlex4210_smsc911x_init();
 190
 191         armlex4210_sdhci_init();
 192
 193         armlex4210_wlan_init();
 194
 195         platform_add_devices(armlex4210_devices,
 196                              ARRAY_SIZE(armlex4210_devices));
 197 }
 198
 199 MACHINE_START(ARMLEX4210, "ARMLEX4210")
 200         /* Maintainer: Alim Akhtar <alim.akhtar@samsung.com> */
 201         .atag_offset    = 0x100,
 202         .init_irq       = exynos4_init_irq,
 203         .map_io         = armlex4210_map_io,
 204         .handle_irq     = gic_handle_irq,
 205         .init_machine   = armlex4210_machine_init,
 206         .init_late      = exynos_init_late,
 207         .timer          = &exynos4_timer,
 208         .restart        = exynos4_restart,
 209 MACHINE_END