arch/arm/mach-imx/mach-mx53_ard.c

   1 /*
   2  * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
   3  */
   4
   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 as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15
  16  * You should have received a copy of the GNU General Public License along
  17  * with this program; if not, write to the Free Software Foundation, Inc.,
  18  * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
  19  */
  20
  21 #include <linux/init.h>
  22 #include <linux/clk.h>
  23 #include <linux/delay.h>
  24 #include <linux/gpio.h>
  25 #include <linux/smsc911x.h>
  26 #include <linux/regulator/machine.h>
  27 #include <linux/regulator/fixed.h>
  28
  29 #include <mach/common.h>
  30 #include <mach/hardware.h>
  31 #include <mach/iomux-mx53.h>
  32
  33 #include <asm/mach-types.h>
  34 #include <asm/mach/arch.h>
  35 #include <asm/mach/time.h>
  36
  37 #include "devices-imx53.h"
  38
  39 #define ARD_ETHERNET_INT_B      IMX_GPIO_NR(2, 31)
  40 #define ARD_SD1_CD              IMX_GPIO_NR(1, 1)
  41 #define ARD_SD1_WP              IMX_GPIO_NR(1, 9)
  42 #define ARD_I2CPORTEXP_B        IMX_GPIO_NR(2, 3)
  43 #define ARD_VOLUMEDOWN          IMX_GPIO_NR(4, 0)
  44 #define ARD_HOME                        IMX_GPIO_NR(5, 10)
  45 #define ARD_BACK                        IMX_GPIO_NR(5, 11)
  46 #define ARD_PROG                        IMX_GPIO_NR(5, 12)
  47 #define ARD_VOLUMEUP            IMX_GPIO_NR(5, 13)
  48
  49 static iomux_v3_cfg_t mx53_ard_pads[] = {
  50         /* UART1 */
  51         MX53_PAD_PATA_DIOW__UART1_TXD_MUX,
  52         MX53_PAD_PATA_DMACK__UART1_RXD_MUX,
  53         /* WEIM for CS1 */
  54         MX53_PAD_EIM_EB3__GPIO2_31, /* ETHERNET_INT_B */
  55         MX53_PAD_EIM_D16__EMI_WEIM_D_16,
  56         MX53_PAD_EIM_D17__EMI_WEIM_D_17,
  57         MX53_PAD_EIM_D18__EMI_WEIM_D_18,
  58         MX53_PAD_EIM_D19__EMI_WEIM_D_19,
  59         MX53_PAD_EIM_D20__EMI_WEIM_D_20,
  60         MX53_PAD_EIM_D21__EMI_WEIM_D_21,
  61         MX53_PAD_EIM_D22__EMI_WEIM_D_22,
  62         MX53_PAD_EIM_D23__EMI_WEIM_D_23,
  63         MX53_PAD_EIM_D24__EMI_WEIM_D_24,
  64         MX53_PAD_EIM_D25__EMI_WEIM_D_25,
  65         MX53_PAD_EIM_D26__EMI_WEIM_D_26,
  66         MX53_PAD_EIM_D27__EMI_WEIM_D_27,
  67         MX53_PAD_EIM_D28__EMI_WEIM_D_28,
  68         MX53_PAD_EIM_D29__EMI_WEIM_D_29,
  69         MX53_PAD_EIM_D30__EMI_WEIM_D_30,
  70         MX53_PAD_EIM_D31__EMI_WEIM_D_31,
  71         MX53_PAD_EIM_DA0__EMI_NAND_WEIM_DA_0,
  72         MX53_PAD_EIM_DA1__EMI_NAND_WEIM_DA_1,
  73         MX53_PAD_EIM_DA2__EMI_NAND_WEIM_DA_2,
  74         MX53_PAD_EIM_DA3__EMI_NAND_WEIM_DA_3,
  75         MX53_PAD_EIM_DA4__EMI_NAND_WEIM_DA_4,
  76         MX53_PAD_EIM_DA5__EMI_NAND_WEIM_DA_5,
  77         MX53_PAD_EIM_DA6__EMI_NAND_WEIM_DA_6,
  78         MX53_PAD_EIM_OE__EMI_WEIM_OE,
  79         MX53_PAD_EIM_RW__EMI_WEIM_RW,
  80         MX53_PAD_EIM_CS1__EMI_WEIM_CS_1,
  81         /* SDHC1 */
  82         MX53_PAD_SD1_CMD__ESDHC1_CMD,
  83         MX53_PAD_SD1_CLK__ESDHC1_CLK,
  84         MX53_PAD_SD1_DATA0__ESDHC1_DAT0,
  85         MX53_PAD_SD1_DATA1__ESDHC1_DAT1,
  86         MX53_PAD_SD1_DATA2__ESDHC1_DAT2,
  87         MX53_PAD_SD1_DATA3__ESDHC1_DAT3,
  88         MX53_PAD_PATA_DATA8__ESDHC1_DAT4,
  89         MX53_PAD_PATA_DATA9__ESDHC1_DAT5,
  90         MX53_PAD_PATA_DATA10__ESDHC1_DAT6,
  91         MX53_PAD_PATA_DATA11__ESDHC1_DAT7,
  92         MX53_PAD_GPIO_1__GPIO1_1,
  93         MX53_PAD_GPIO_9__GPIO1_9,
  94         /* I2C2 */
  95         MX53_PAD_EIM_EB2__I2C2_SCL,
  96         MX53_PAD_KEY_ROW3__I2C2_SDA,
  97         /* I2C3 */
  98         MX53_PAD_GPIO_3__I2C3_SCL,
  99         MX53_PAD_GPIO_16__I2C3_SDA,
 100         /* GPIO */
 101         MX53_PAD_DISP0_DAT16__GPIO5_10, /* home */
 102         MX53_PAD_DISP0_DAT17__GPIO5_11, /* back */
 103         MX53_PAD_DISP0_DAT18__GPIO5_12, /* prog */
 104         MX53_PAD_DISP0_DAT19__GPIO5_13, /* vol up */
 105         MX53_PAD_GPIO_10__GPIO4_0,              /* vol down */
 106 };
 107
 108 #define GPIO_BUTTON(gpio_num, ev_code, act_low, descr, wake)    \
 109 {                                                       \
 110         .gpio           = gpio_num,                             \
 111         .type           = EV_KEY,                               \
 112         .code           = ev_code,                              \
 113         .active_low     = act_low,                              \
 114         .desc           = "btn " descr,                 \
 115         .wakeup         = wake,                                 \
 116 }
 117
 118 static struct gpio_keys_button ard_buttons[] = {
 119         GPIO_BUTTON(ARD_HOME, KEY_HOME, 1, "home", 0),
 120         GPIO_BUTTON(ARD_BACK, KEY_BACK, 1, "back", 0),
 121         GPIO_BUTTON(ARD_PROG, KEY_PROGRAM, 1, "program", 0),
 122         GPIO_BUTTON(ARD_VOLUMEUP, KEY_VOLUMEUP, 1, "volume-up", 0),
 123         GPIO_BUTTON(ARD_VOLUMEDOWN, KEY_VOLUMEDOWN, 1, "volume-down", 0),
 124 };
 125
 126 static const struct gpio_keys_platform_data ard_button_data __initconst = {
 127         .buttons        = ard_buttons,
 128         .nbuttons       = ARRAY_SIZE(ard_buttons),
 129 };
 130
 131 static struct resource ard_smsc911x_resources[] = {
 132         {
 133                 .start = MX53_CS1_64MB_BASE_ADDR,
 134                 .end = MX53_CS1_64MB_BASE_ADDR + SZ_32M - 1,
 135                 .flags = IORESOURCE_MEM,
 136         },
 137         {
 138                 .start =  IMX_GPIO_TO_IRQ(ARD_ETHERNET_INT_B),
 139                 .end =  IMX_GPIO_TO_IRQ(ARD_ETHERNET_INT_B),
 140                 .flags = IORESOURCE_IRQ,
 141         },
 142 };
 143
 144 struct smsc911x_platform_config ard_smsc911x_config = {
 145         .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
 146         .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
 147         .flags = SMSC911X_USE_32BIT,
 148 };
 149
 150 static struct platform_device ard_smsc_lan9220_device = {
 151         .name = "smsc911x",
 152         .id = -1,
 153         .num_resources = ARRAY_SIZE(ard_smsc911x_resources),
 154         .resource = ard_smsc911x_resources,
 155         .dev = {
 156                 .platform_data = &ard_smsc911x_config,
 157         },
 158 };
 159
 160 static const struct esdhc_platform_data mx53_ard_sd1_data __initconst = {
 161         .cd_gpio = ARD_SD1_CD,
 162         .wp_gpio = ARD_SD1_WP,
 163 };
 164
 165 static struct imxi2c_platform_data mx53_ard_i2c2_data = {
 166         .bitrate = 50000,
 167 };
 168
 169 static struct imxi2c_platform_data mx53_ard_i2c3_data = {
 170         .bitrate = 400000,
 171 };
 172
 173 static void __init mx53_ard_io_init(void)
 174 {
 175         gpio_request(ARD_ETHERNET_INT_B, "eth-int-b");
 176         gpio_direction_input(ARD_ETHERNET_INT_B);
 177
 178         gpio_request(ARD_I2CPORTEXP_B, "i2cptexp-rst");
 179         gpio_direction_output(ARD_I2CPORTEXP_B, 1);
 180 }
 181
 182 /* Config CS1 settings for ethernet controller */
 183 static int weim_cs_config(void)
 184 {
 185         u32 reg;
 186         void __iomem *weim_base, *iomuxc_base;
 187
 188         weim_base = ioremap(MX53_WEIM_BASE_ADDR, SZ_4K);
 189         if (!weim_base)
 190                 return -ENOMEM;
 191
 192         iomuxc_base = ioremap(MX53_IOMUXC_BASE_ADDR, SZ_4K);
 193         if (!iomuxc_base) {
 194                 iounmap(weim_base);
 195                 return -ENOMEM;
 196         }
 197
 198         /* CS1 timings for LAN9220 */
 199         writel(0x20001, (weim_base + 0x18));
 200         writel(0x0, (weim_base + 0x1C));
 201         writel(0x16000202, (weim_base + 0x20));
 202         writel(0x00000002, (weim_base + 0x24));
 203         writel(0x16002082, (weim_base + 0x28));
 204         writel(0x00000000, (weim_base + 0x2C));
 205         writel(0x00000000, (weim_base + 0x90));
 206
 207         /* specify 64 MB on CS1 and CS0 on GPR1 */
 208         reg = readl(iomuxc_base + 0x4);
 209         reg &= ~0x3F;
 210         reg |= 0x1B;
 211         writel(reg, (iomuxc_base + 0x4));
 212
 213         iounmap(iomuxc_base);
 214         iounmap(weim_base);
 215
 216         return 0;
 217 }
 218
 219 static struct regulator_consumer_supply dummy_supplies[] = {
 220         REGULATOR_SUPPLY("vdd33a", "smsc911x"),
 221         REGULATOR_SUPPLY("vddvario", "smsc911x"),
 222 };
 223
 224 void __init imx53_ard_common_init(void)
 225 {
 226         mxc_iomux_v3_setup_multiple_pads(mx53_ard_pads,
 227                                          ARRAY_SIZE(mx53_ard_pads));
 228         weim_cs_config();
 229 }
 230
 231 static struct platform_device *devices[] __initdata = {
 232         &ard_smsc_lan9220_device,
 233 };
 234
 235 static void __init mx53_ard_board_init(void)
 236 {
 237         imx53_soc_init();
 238         imx53_add_imx_uart(0, NULL);
 239
 240         imx53_ard_common_init();
 241         mx53_ard_io_init();
 242         regulator_register_fixed(0, dummy_supplies, ARRAY_SIZE(dummy_supplies));
 243         platform_add_devices(devices, ARRAY_SIZE(devices));
 244
 245         imx53_add_sdhci_esdhc_imx(0, &mx53_ard_sd1_data);
 246         imx53_add_imx2_wdt(0, NULL);
 247         imx53_add_imx_i2c(1, &mx53_ard_i2c2_data);
 248         imx53_add_imx_i2c(2, &mx53_ard_i2c3_data);
 249         imx_add_gpio_keys(&ard_button_data);
 250         imx53_add_ahci_imx();
 251 }
 252
 253 static void __init mx53_ard_timer_init(void)
 254 {
 255         mx53_clocks_init(32768, 24000000, 22579200, 0);
 256 }
 257
 258 static struct sys_timer mx53_ard_timer = {
 259         .init   = mx53_ard_timer_init,
 260 };
 261
 262 MACHINE_START(MX53_ARD, "Freescale MX53 ARD Board")
 263         .map_io = mx53_map_io,
 264         .init_early = imx53_init_early,
 265         .init_irq = mx53_init_irq,
 266         .handle_irq = imx53_handle_irq,
 267         .timer = &mx53_ard_timer,
 268         .init_machine = mx53_ard_board_init,
 269         .restart        = mxc_restart,
 270 MACHINE_END