arch/arm/mach-kirkwood/openrd-setup.c

   1 /*
   2  * arch/arm/mach-kirkwood/openrd-setup.c
   3  *
   4  * Marvell OpenRD (Base|Client|Ultimate) Board Setup
   5  *
   6  * This file is licensed under the terms of the GNU General Public
   7  * License version 2.  This program is licensed "as is" without any
   8  * warranty of any kind, whether express or implied.
   9  */
  10
  11 #include <linux/kernel.h>
  12 #include <linux/init.h>
  13 #include <linux/platform_device.h>
  14 #include <linux/mtd/nand.h>
  15 #include <linux/mtd/partitions.h>
  16 #include <linux/ata_platform.h>
  17 #include <linux/mv643xx_eth.h>
  18 #include <linux/i2c.h>
  19 #include <linux/gpio.h>
  20 #include <asm/mach-types.h>
  21 #include <asm/mach/arch.h>
  22 #include <mach/kirkwood.h>
  23 #include <plat/mvsdio.h>
  24 #include "common.h"
  25 #include "mpp.h"
  26
  27 static struct mtd_partition openrd_nand_parts[] = {
  28         {
  29                 .name           = "u-boot",
  30                 .offset         = 0,
  31                 .size           = SZ_1M,
  32                 .mask_flags     = MTD_WRITEABLE
  33         }, {
  34                 .name           = "uImage",
  35                 .offset         = MTDPART_OFS_NXTBLK,
  36                 .size           = SZ_4M
  37         }, {
  38                 .name           = "root",
  39                 .offset         = MTDPART_OFS_NXTBLK,
  40                 .size           = MTDPART_SIZ_FULL
  41         },
  42 };
  43
  44 static struct mv643xx_eth_platform_data openrd_ge00_data = {
  45         .phy_addr       = MV643XX_ETH_PHY_ADDR(8),
  46 };
  47
  48 static struct mv643xx_eth_platform_data openrd_ge01_data = {
  49         .phy_addr       = MV643XX_ETH_PHY_ADDR(24),
  50 };
  51
  52 static struct mv_sata_platform_data openrd_sata_data = {
  53         .n_ports        = 2,
  54 };
  55
  56 static struct mvsdio_platform_data openrd_mvsdio_data = {
  57         .gpio_card_detect = 29, /* MPP29 used as SD card detect */
  58 };
  59
  60 static unsigned int openrd_mpp_config[] __initdata = {
  61         MPP12_SD_CLK,
  62         MPP13_SD_CMD,
  63         MPP14_SD_D0,
  64         MPP15_SD_D1,
  65         MPP16_SD_D2,
  66         MPP17_SD_D3,
  67         MPP28_GPIO,
  68         MPP29_GPIO,
  69         MPP34_GPIO,
  70         0
  71 };
  72
  73 /* Configure MPP for UART1 */
  74 static unsigned int openrd_uart1_mpp_config[] __initdata = {
  75         MPP13_UART1_TXD,
  76         MPP14_UART1_RXD,
  77         0
  78 };
  79
  80 static struct i2c_board_info i2c_board_info[] __initdata = {
  81         {
  82                 I2C_BOARD_INFO("cs42l51", 0x4a),
  83         },
  84 };
  85
  86 static int __initdata uart1;
  87
  88 static int __init sd_uart_selection(char *str)
  89 {
  90         uart1 = -EINVAL;
  91
  92         /* Default is SD. Change if required, for UART */
  93         if (!str)
  94                 return 0;
  95
  96         if (!strncmp(str, "232", 3)) {
  97                 uart1 = 232;
  98         } else if (!strncmp(str, "485", 3)) {
  99                 /* OpenRD-Base doesn't have RS485. Treat is as an
 100                  * unknown argument & just have default setting -
 101                  * which is SD */
 102                 if (machine_is_openrd_base()) {
 103                         uart1 = -ENODEV;
 104                         return 1;
 105                 }
 106
 107                 uart1 = 485;
 108         }
 109         return 1;
 110 }
 111 /* Parse boot_command_line string kw_openrd_init_uart1=232/485 */
 112 __setup("kw_openrd_init_uart1=", sd_uart_selection);
 113
 114 static int __init uart1_mpp_config(void)
 115 {
 116         kirkwood_mpp_conf(openrd_uart1_mpp_config);
 117
 118         if (gpio_request(34, "SD_UART1_SEL")) {
 119                 printk(KERN_ERR "GPIO request failed for SD/UART1 selection"
 120                                 ", gpio: 34\n");
 121                 return -EIO;
 122         }
 123
 124         if (gpio_request(28, "RS232_RS485_SEL")) {
 125                 printk(KERN_ERR "GPIO request failed for RS232/RS485 selection"
 126                                 ", gpio# 28\n");
 127                 gpio_free(34);
 128                 return -EIO;
 129         }
 130
 131         /* Select UART1
 132          * Pin # 34: 0 => UART1, 1 => SD */
 133         gpio_direction_output(34, 0);
 134
 135         /* Select RS232 OR RS485
 136          * Pin # 28: 0 => RS232, 1 => RS485 */
 137         if (uart1 == 232)
 138                 gpio_direction_output(28, 0);
 139         else
 140                 gpio_direction_output(28, 1);
 141
 142         gpio_free(34);
 143         gpio_free(28);
 144
 145         return 0;
 146 }
 147
 148 static void __init openrd_init(void)
 149 {
 150         /*
 151          * Basic setup. Needs to be called early.
 152          */
 153         kirkwood_init();
 154         kirkwood_mpp_conf(openrd_mpp_config);
 155
 156         kirkwood_uart0_init();
 157         kirkwood_nand_init(ARRAY_AND_SIZE(openrd_nand_parts), 25);
 158
 159         kirkwood_ehci_init();
 160
 161         if (machine_is_openrd_ultimate()) {
 162                 openrd_ge00_data.phy_addr = MV643XX_ETH_PHY_ADDR(0);
 163                 openrd_ge01_data.phy_addr = MV643XX_ETH_PHY_ADDR(1);
 164         }
 165
 166         kirkwood_ge00_init(&openrd_ge00_data);
 167         if (!machine_is_openrd_base())
 168                 kirkwood_ge01_init(&openrd_ge01_data);
 169
 170         kirkwood_sata_init(&openrd_sata_data);
 171
 172         kirkwood_i2c_init();
 173
 174         if (machine_is_openrd_client() || machine_is_openrd_ultimate()) {
 175                 i2c_register_board_info(0, i2c_board_info,
 176                         ARRAY_SIZE(i2c_board_info));
 177                 kirkwood_audio_init();
 178         }
 179
 180         if (uart1 <= 0) {
 181                 if (uart1 < 0)
 182                         printk(KERN_ERR "Invalid kernel parameter to select "
 183                                 "UART1. Defaulting to SD. ERROR CODE: %d\n",
 184                                 uart1);
 185
 186                 /* Select SD
 187                  * Pin # 34: 0 => UART1, 1 => SD */
 188                 if (gpio_request(34, "SD_UART1_SEL")) {
 189                         printk(KERN_ERR "GPIO request failed for SD/UART1 "
 190                                         "selection, gpio: 34\n");
 191                 } else {
 192
 193                         gpio_direction_output(34, 1);
 194                         gpio_free(34);
 195                         kirkwood_sdio_init(&openrd_mvsdio_data);
 196                 }
 197         } else {
 198                 if (!uart1_mpp_config())
 199                         kirkwood_uart1_init();
 200         }
 201 }
 202
 203 static int __init openrd_pci_init(void)
 204 {
 205         if (machine_is_openrd_base() ||
 206             machine_is_openrd_client() ||
 207             machine_is_openrd_ultimate())
 208                 kirkwood_pcie_init(KW_PCIE0);
 209
 210         return 0;
 211 }
 212 subsys_initcall(openrd_pci_init);
 213
 214 #ifdef CONFIG_MACH_OPENRD_BASE
 215 MACHINE_START(OPENRD_BASE, "Marvell OpenRD Base Board")
 216         /* Maintainer: Dhaval Vasa <dhaval.vasa@einfochips.com> */
 217         .atag_offset    = 0x100,
 218         .init_machine   = openrd_init,
 219         .map_io         = kirkwood_map_io,
 220         .init_early     = kirkwood_init_early,
 221         .init_irq       = kirkwood_init_irq,
 222         .timer          = &kirkwood_timer,
 223 MACHINE_END
 224 #endif
 225
 226 #ifdef CONFIG_MACH_OPENRD_CLIENT
 227 MACHINE_START(OPENRD_CLIENT, "Marvell OpenRD Client Board")
 228         /* Maintainer: Dhaval Vasa <dhaval.vasa@einfochips.com> */
 229         .atag_offset    = 0x100,
 230         .init_machine   = openrd_init,
 231         .map_io         = kirkwood_map_io,
 232         .init_early     = kirkwood_init_early,
 233         .init_irq       = kirkwood_init_irq,
 234         .timer          = &kirkwood_timer,
 235 MACHINE_END
 236 #endif
 237
 238 #ifdef CONFIG_MACH_OPENRD_ULTIMATE
 239 MACHINE_START(OPENRD_ULTIMATE, "Marvell OpenRD Ultimate Board")
 240         /* Maintainer: Dhaval Vasa <dhaval.vasa@einfochips.com> */
 241         .atag_offset    = 0x100,
 242         .init_machine   = openrd_init,
 243         .map_io         = kirkwood_map_io,
 244         .init_early     = kirkwood_init_early,
 245         .init_irq       = kirkwood_init_irq,
 246         .timer          = &kirkwood_timer,
 247 MACHINE_END
 248 #endif