arch/arm/mach-exynos4/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/mach-types.h>
  20
  21 #include <plat/cpu.h>
  22 #include <plat/devs.h>
  23 #include <plat/exynos4.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 /* Following are default values for UCON, ULCON and UFCON UART registers */
  32 #define ARMLEX4210_UCON_DEFAULT (S3C2410_UCON_TXILEVEL |        \
  33                                  S3C2410_UCON_RXILEVEL |        \
  34                                  S3C2410_UCON_TXIRQMODE |       \
  35                                  S3C2410_UCON_RXIRQMODE |       \
  36                                  S3C2410_UCON_RXFIFO_TOI |      \
  37                                  S3C2443_UCON_RXERR_IRQEN)
  38
  39 #define ARMLEX4210_ULCON_DEFAULT        S3C2410_LCON_CS8
  40
  41 #define ARMLEX4210_UFCON_DEFAULT        (S3C2410_UFCON_FIFOMODE |       \
  42                                  S5PV210_UFCON_TXTRIG4 |        \
  43                                  S5PV210_UFCON_RXTRIG4)
  44
  45 static struct s3c2410_uartcfg armlex4210_uartcfgs[] __initdata = {
  46         [0] = {
  47                 .hwport         = 0,
  48                 .flags          = 0,
  49                 .ucon           = ARMLEX4210_UCON_DEFAULT,
  50                 .ulcon          = ARMLEX4210_ULCON_DEFAULT,
  51                 .ufcon          = ARMLEX4210_UFCON_DEFAULT,
  52         },
  53         [1] = {
  54                 .hwport         = 1,
  55                 .flags          = 0,
  56                 .ucon           = ARMLEX4210_UCON_DEFAULT,
  57                 .ulcon          = ARMLEX4210_ULCON_DEFAULT,
  58                 .ufcon          = ARMLEX4210_UFCON_DEFAULT,
  59         },
  60         [2] = {
  61                 .hwport         = 2,
  62                 .flags          = 0,
  63                 .ucon           = ARMLEX4210_UCON_DEFAULT,
  64                 .ulcon          = ARMLEX4210_ULCON_DEFAULT,
  65                 .ufcon          = ARMLEX4210_UFCON_DEFAULT,
  66         },
  67         [3] = {
  68                 .hwport         = 3,
  69                 .flags          = 0,
  70                 .ucon           = ARMLEX4210_UCON_DEFAULT,
  71                 .ulcon          = ARMLEX4210_ULCON_DEFAULT,
  72                 .ufcon          = ARMLEX4210_UFCON_DEFAULT,
  73         },
  74 };
  75
  76 static struct s3c_sdhci_platdata armlex4210_hsmmc0_pdata __initdata = {
  77         .cd_type                = S3C_SDHCI_CD_PERMANENT,
  78         .clk_type               = S3C_SDHCI_CLK_DIV_EXTERNAL,
  79 #ifdef CONFIG_EXYNOS4_SDHCI_CH0_8BIT
  80         .max_width              = 8,
  81         .host_caps              = MMC_CAP_8_BIT_DATA,
  82 #endif
  83 };
  84
  85 static struct s3c_sdhci_platdata armlex4210_hsmmc2_pdata __initdata = {
  86         .cd_type                = S3C_SDHCI_CD_GPIO,
  87         .ext_cd_gpio            = EXYNOS4_GPX2(5),
  88         .ext_cd_gpio_invert     = 1,
  89         .clk_type               = S3C_SDHCI_CLK_DIV_EXTERNAL,
  90         .max_width              = 4,
  91 };
  92
  93 static struct s3c_sdhci_platdata armlex4210_hsmmc3_pdata __initdata = {
  94         .cd_type                = S3C_SDHCI_CD_PERMANENT,
  95         .clk_type               = S3C_SDHCI_CLK_DIV_EXTERNAL,
  96         .max_width              = 4,
  97 };
  98
  99 static void __init armlex4210_sdhci_init(void)
 100 {
 101         s3c_sdhci0_set_platdata(&armlex4210_hsmmc0_pdata);
 102         s3c_sdhci2_set_platdata(&armlex4210_hsmmc2_pdata);
 103         s3c_sdhci3_set_platdata(&armlex4210_hsmmc3_pdata);
 104 }
 105
 106 static void __init armlex4210_wlan_init(void)
 107 {
 108         /* enable */
 109         s3c_gpio_cfgpin(EXYNOS4_GPX2(0), S3C_GPIO_SFN(0xf));
 110         s3c_gpio_setpull(EXYNOS4_GPX2(0), S3C_GPIO_PULL_UP);
 111
 112         /* reset */
 113         s3c_gpio_cfgpin(EXYNOS4_GPX1(6), S3C_GPIO_SFN(0xf));
 114         s3c_gpio_setpull(EXYNOS4_GPX1(6), S3C_GPIO_PULL_UP);
 115
 116         /* wakeup */
 117         s3c_gpio_cfgpin(EXYNOS4_GPX1(5), S3C_GPIO_SFN(0xf));
 118         s3c_gpio_setpull(EXYNOS4_GPX1(5), S3C_GPIO_PULL_UP);
 119 }
 120
 121 static struct resource armlex4210_smsc911x_resources[] = {
 122         [0] = {
 123                 .start  = EXYNOS4_PA_SROM_BANK(3),
 124                 .end    = EXYNOS4_PA_SROM_BANK(3) + SZ_64K - 1,
 125                 .flags  = IORESOURCE_MEM,
 126         },
 127         [1] = {
 128                 .start  = IRQ_EINT(27),
 129                 .end    = IRQ_EINT(27),
 130                 .flags  = IORESOURCE_IRQ | IRQF_TRIGGER_HIGH,
 131         },
 132 };
 133
 134 static struct smsc911x_platform_config smsc9215_config = {
 135         .irq_polarity   = SMSC911X_IRQ_POLARITY_ACTIVE_HIGH,
 136         .irq_type       = SMSC911X_IRQ_TYPE_PUSH_PULL,
 137         .flags          = SMSC911X_USE_16BIT | SMSC911X_FORCE_INTERNAL_PHY,
 138         .phy_interface  = PHY_INTERFACE_MODE_MII,
 139         .mac            = {0x00, 0x80, 0x00, 0x23, 0x45, 0x67},
 140 };
 141
 142 static struct platform_device armlex4210_smsc911x = {
 143         .name           = "smsc911x",
 144         .id             = -1,
 145         .num_resources  = ARRAY_SIZE(armlex4210_smsc911x_resources),
 146         .resource       = armlex4210_smsc911x_resources,
 147         .dev            = {
 148                 .platform_data  = &smsc9215_config,
 149         },
 150 };
 151
 152 static struct platform_device *armlex4210_devices[] __initdata = {
 153         &s3c_device_hsmmc0,
 154         &s3c_device_hsmmc2,
 155         &s3c_device_hsmmc3,
 156         &s3c_device_rtc,
 157         &s3c_device_wdt,
 158         &exynos4_device_sysmmu,
 159         &samsung_asoc_dma,
 160         &armlex4210_smsc911x,
 161         &exynos4_device_ahci,
 162 };
 163
 164 static void __init armlex4210_smsc911x_init(void)
 165 {
 166         u32 cs1;
 167
 168         /* configure nCS1 width to 16 bits */
 169         cs1 = __raw_readl(S5P_SROM_BW) &
 170                 ~(S5P_SROM_BW__CS_MASK << S5P_SROM_BW__NCS1__SHIFT);
 171         cs1 |= ((1 << S5P_SROM_BW__DATAWIDTH__SHIFT) |
 172                 (0 << S5P_SROM_BW__WAITENABLE__SHIFT) |
 173                 (1 << S5P_SROM_BW__ADDRMODE__SHIFT) |
 174                 (1 << S5P_SROM_BW__BYTEENABLE__SHIFT)) <<
 175                 S5P_SROM_BW__NCS1__SHIFT;
 176         __raw_writel(cs1, S5P_SROM_BW);
 177
 178         /* set timing for nCS1 suitable for ethernet chip */
 179         __raw_writel((0x1 << S5P_SROM_BCX__PMC__SHIFT) |
 180                      (0x9 << S5P_SROM_BCX__TACP__SHIFT) |
 181                      (0xc << S5P_SROM_BCX__TCAH__SHIFT) |
 182                      (0x1 << S5P_SROM_BCX__TCOH__SHIFT) |
 183                      (0x6 << S5P_SROM_BCX__TACC__SHIFT) |
 184                      (0x1 << S5P_SROM_BCX__TCOS__SHIFT) |
 185                      (0x1 << S5P_SROM_BCX__TACS__SHIFT), S5P_SROM_BC1);
 186 }
 187
 188 static void __init armlex4210_map_io(void)
 189 {
 190         s5p_init_io(NULL, 0, S5P_VA_CHIPID);
 191         s3c24xx_init_clocks(24000000);
 192         s3c24xx_init_uarts(armlex4210_uartcfgs,
 193                            ARRAY_SIZE(armlex4210_uartcfgs));
 194 }
 195
 196 static void __init armlex4210_machine_init(void)
 197 {
 198         armlex4210_smsc911x_init();
 199
 200         armlex4210_sdhci_init();
 201
 202         armlex4210_wlan_init();
 203
 204         platform_add_devices(armlex4210_devices,
 205                              ARRAY_SIZE(armlex4210_devices));
 206 }
 207
 208 MACHINE_START(ARMLEX4210, "ARMLEX4210")
 209         /* Maintainer: Alim Akhtar <alim.akhtar@samsung.com> */
 210         .atag_offset    = 0x100,
 211         .init_irq       = exynos4_init_irq,
 212         .map_io         = armlex4210_map_io,
 213         .init_machine   = armlex4210_machine_init,
 214         .timer          = &exynos4_timer,
 215 MACHINE_END