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 <linux/platform_data/mmc-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         .gpio_write_protect = -1,
  59 };
  60
  61 static unsigned int openrd_mpp_config[] __initdata = {
  62         MPP12_SD_CLK,
  63         MPP13_SD_CMD,
  64         MPP14_SD_D0,
  65         MPP15_SD_D1,
  66         MPP16_SD_D2,
  67         MPP17_SD_D3,
  68         MPP28_GPIO,
  69         MPP29_GPIO,
  70         MPP34_GPIO,
  71         0
  72 };
  73
  74 /* Configure MPP for UART1 */
  75 static unsigned int openrd_uart1_mpp_config[] __initdata = {
  76         MPP13_UART1_TXD,
  77         MPP14_UART1_RXD,
  78         0
  79 };
  80
  81 static struct i2c_board_info i2c_board_info[] __initdata = {
  82         {
  83                 I2C_BOARD_INFO("cs42l51", 0x4a),
  84         },
  85 };
  86
  87 static struct platform_device openrd_client_audio_device = {
  88         .name           = "openrd-client-audio",
  89         .id             = -1,
  90 };
  91
  92 static int __initdata uart1;
  93
  94 static int __init sd_uart_selection(char *str)
  95 {
  96         uart1 = -EINVAL;
  97
  98         /* Default is SD. Change if required, for UART */
  99         if (!str)
 100                 return 0;
 101
 102         if (!strncmp(str, "232", 3)) {
 103                 uart1 = 232;
 104         } else if (!strncmp(str, "485", 3)) {
 105                 /* OpenRD-Base doesn't have RS485. Treat is as an
 106                  * unknown argument & just have default setting -
 107                  * which is SD */
 108                 if (machine_is_openrd_base()) {
 109                         uart1 = -ENODEV;
 110                         return 1;
 111                 }
 112
 113                 uart1 = 485;
 114         }
 115         return 1;
 116 }
 117 /* Parse boot_command_line string kw_openrd_init_uart1=232/485 */
 118 __setup("kw_openrd_init_uart1=", sd_uart_selection);
 119
 120 static int __init uart1_mpp_config(void)
 121 {
 122         kirkwood_mpp_conf(openrd_uart1_mpp_config);
 123
 124         if (gpio_request(34, "SD_UART1_SEL")) {
 125                 pr_err("GPIO request 34 failed for SD/UART1 selection\n");
 126                 return -EIO;
 127         }
 128
 129         if (gpio_request(28, "RS232_RS485_SEL")) {
 130                 pr_err("GPIO request 28 failed for RS232/RS485 selection\n");
 131                 gpio_free(34);
 132                 return -EIO;
 133         }
 134
 135         /* Select UART1
 136          * Pin # 34: 0 => UART1, 1 => SD */
 137         gpio_direction_output(34, 0);
 138
 139         /* Select RS232 OR RS485
 140          * Pin # 28: 0 => RS232, 1 => RS485 */
 141         if (uart1 == 232)
 142                 gpio_direction_output(28, 0);
 143         else
 144                 gpio_direction_output(28, 1);
 145
 146         gpio_free(34);
 147         gpio_free(28);
 148
 149         return 0;
 150 }
 151
 152 static void __init openrd_init(void)
 153 {
 154         /*
 155          * Basic setup. Needs to be called early.
 156          */
 157         kirkwood_init();
 158         kirkwood_mpp_conf(openrd_mpp_config);
 159
 160         kirkwood_uart0_init();
 161         kirkwood_nand_init(ARRAY_AND_SIZE(openrd_nand_parts), 25);
 162
 163         kirkwood_ehci_init();
 164
 165         if (machine_is_openrd_ultimate()) {
 166                 openrd_ge00_data.phy_addr = MV643XX_ETH_PHY_ADDR(0);
 167                 openrd_ge01_data.phy_addr = MV643XX_ETH_PHY_ADDR(1);
 168         }
 169
 170         kirkwood_ge00_init(&openrd_ge00_data);
 171         if (!machine_is_openrd_base())
 172                 kirkwood_ge01_init(&openrd_ge01_data);
 173
 174         kirkwood_sata_init(&openrd_sata_data);
 175
 176         kirkwood_i2c_init();
 177
 178         if (machine_is_openrd_client() || machine_is_openrd_ultimate()) {
 179                 platform_device_register(&openrd_client_audio_device);
 180                 i2c_register_board_info(0, i2c_board_info,
 181                         ARRAY_SIZE(i2c_board_info));
 182                 kirkwood_audio_init();
 183         }
 184
 185         if (uart1 <= 0) {
 186                 if (uart1 < 0)
 187                         pr_err("Invalid kernel parameter to select UART1. Defaulting to SD. ERROR CODE: %d\n",
 188                                uart1);
 189
 190                 /* Select SD
 191                  * Pin # 34: 0 => UART1, 1 => SD */
 192                 if (gpio_request(34, "SD_UART1_SEL")) {
 193                         pr_err("GPIO request 34 failed for SD/UART1 selection\n");
 194                 } else {
 195
 196                         gpio_direction_output(34, 1);
 197                         gpio_free(34);
 198                         kirkwood_sdio_init(&openrd_mvsdio_data);
 199                 }
 200         } else {
 201                 if (!uart1_mpp_config())
 202                         kirkwood_uart1_init();
 203         }
 204 }
 205
 206 static int __init openrd_pci_init(void)
 207 {
 208         if (machine_is_openrd_base() ||
 209             machine_is_openrd_client() ||
 210             machine_is_openrd_ultimate())
 211                 kirkwood_pcie_init(KW_PCIE0);
 212
 213         return 0;
 214 }
 215 subsys_initcall(openrd_pci_init);
 216
 217 #ifdef CONFIG_MACH_OPENRD_BASE
 218 MACHINE_START(OPENRD_BASE, "Marvell OpenRD Base Board")
 219         /* Maintainer: Dhaval Vasa <dhaval.vasa@einfochips.com> */
 220         .atag_offset    = 0x100,
 221         .init_machine   = openrd_init,
 222         .map_io         = kirkwood_map_io,
 223         .init_early     = kirkwood_init_early,
 224         .init_irq       = kirkwood_init_irq,
 225         .init_time      = kirkwood_timer_init,
 226         .restart        = kirkwood_restart,
 227 MACHINE_END
 228 #endif
 229
 230 #ifdef CONFIG_MACH_OPENRD_CLIENT
 231 MACHINE_START(OPENRD_CLIENT, "Marvell OpenRD Client Board")
 232         /* Maintainer: Dhaval Vasa <dhaval.vasa@einfochips.com> */
 233         .atag_offset    = 0x100,
 234         .init_machine   = openrd_init,
 235         .map_io         = kirkwood_map_io,
 236         .init_early     = kirkwood_init_early,
 237         .init_irq       = kirkwood_init_irq,
 238         .init_time      = kirkwood_timer_init,
 239         .restart        = kirkwood_restart,
 240 MACHINE_END
 241 #endif
 242
 243 #ifdef CONFIG_MACH_OPENRD_ULTIMATE
 244 MACHINE_START(OPENRD_ULTIMATE, "Marvell OpenRD Ultimate Board")
 245         /* Maintainer: Dhaval Vasa <dhaval.vasa@einfochips.com> */
 246         .atag_offset    = 0x100,
 247         .init_machine   = openrd_init,
 248         .map_io         = kirkwood_map_io,
 249         .init_early     = kirkwood_init_early,
 250         .init_irq       = kirkwood_init_irq,
 251         .init_time      = kirkwood_timer_init,
 252         .restart        = kirkwood_restart,
 253 MACHINE_END
 254 #endif