Cyril Chemparathy | 57a58a2 | 2010-05-18 12:51:21 -0400 | [diff] [blame] | 1 | /* |
| 2 | * Texas Instruments TNETV107X EVM Board Support |
| 3 | * |
| 4 | * Copyright (C) 2010 Texas Instruments |
| 5 | * |
| 6 | * This program is free software; you can redistribute it and/or |
| 7 | * modify it under the terms of the GNU General Public License as |
| 8 | * published by the Free Software Foundation version 2. |
| 9 | * |
| 10 | * This program is distributed "as is" WITHOUT ANY WARRANTY of any |
| 11 | * kind, whether express or implied; without even the implied warranty |
| 12 | * of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 13 | * GNU General Public License for more details. |
| 14 | */ |
| 15 | #include <linux/kernel.h> |
| 16 | #include <linux/init.h> |
| 17 | #include <linux/console.h> |
| 18 | #include <linux/dma-mapping.h> |
| 19 | #include <linux/interrupt.h> |
| 20 | #include <linux/gpio.h> |
| 21 | #include <linux/delay.h> |
| 22 | #include <linux/platform_device.h> |
| 23 | #include <linux/ratelimit.h> |
| 24 | #include <linux/mtd/mtd.h> |
| 25 | #include <linux/mtd/partitions.h> |
| 26 | #include <asm/mach/arch.h> |
| 27 | #include <asm/mach-types.h> |
| 28 | |
| 29 | #include <mach/irqs.h> |
| 30 | #include <mach/edma.h> |
| 31 | #include <mach/mux.h> |
| 32 | #include <mach/cp_intc.h> |
| 33 | #include <mach/tnetv107x.h> |
| 34 | |
| 35 | #define EVM_MMC_WP_GPIO 21 |
| 36 | #define EVM_MMC_CD_GPIO 24 |
| 37 | |
| 38 | static int initialize_gpio(int gpio, char *desc) |
| 39 | { |
| 40 | int ret; |
| 41 | |
| 42 | ret = gpio_request(gpio, desc); |
| 43 | if (ret < 0) { |
| 44 | pr_err_ratelimited("cannot open %s gpio\n", desc); |
| 45 | return -ENOSYS; |
| 46 | } |
| 47 | gpio_direction_input(gpio); |
| 48 | return gpio; |
| 49 | } |
| 50 | |
| 51 | static int mmc_get_cd(int index) |
| 52 | { |
| 53 | static int gpio; |
| 54 | |
| 55 | if (!gpio) |
| 56 | gpio = initialize_gpio(EVM_MMC_CD_GPIO, "mmc card detect"); |
| 57 | |
| 58 | if (gpio < 0) |
| 59 | return gpio; |
| 60 | |
| 61 | return gpio_get_value(gpio) ? 0 : 1; |
| 62 | } |
| 63 | |
| 64 | static int mmc_get_ro(int index) |
| 65 | { |
| 66 | static int gpio; |
| 67 | |
| 68 | if (!gpio) |
| 69 | gpio = initialize_gpio(EVM_MMC_WP_GPIO, "mmc write protect"); |
| 70 | |
| 71 | if (gpio < 0) |
| 72 | return gpio; |
| 73 | |
| 74 | return gpio_get_value(gpio) ? 1 : 0; |
| 75 | } |
| 76 | |
| 77 | static struct davinci_mmc_config mmc_config = { |
| 78 | .get_cd = mmc_get_cd, |
| 79 | .get_ro = mmc_get_ro, |
| 80 | .wires = 4, |
| 81 | .max_freq = 50000000, |
| 82 | .caps = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED, |
| 83 | .version = MMC_CTLR_VERSION_1, |
| 84 | }; |
| 85 | |
| 86 | static const short sdio1_pins[] __initdata = { |
| 87 | TNETV107X_SDIO1_CLK_1, TNETV107X_SDIO1_CMD_1, |
| 88 | TNETV107X_SDIO1_DATA0_1, TNETV107X_SDIO1_DATA1_1, |
| 89 | TNETV107X_SDIO1_DATA2_1, TNETV107X_SDIO1_DATA3_1, |
| 90 | TNETV107X_GPIO21, TNETV107X_GPIO24, |
| 91 | -1 |
| 92 | }; |
| 93 | |
| 94 | static const short uart1_pins[] __initdata = { |
| 95 | TNETV107X_UART1_RD, TNETV107X_UART1_TD, |
| 96 | -1 |
| 97 | }; |
| 98 | |
| 99 | static struct mtd_partition nand_partitions[] = { |
| 100 | /* bootloader (U-Boot, etc) in first 12 sectors */ |
| 101 | { |
| 102 | .name = "bootloader", |
| 103 | .offset = 0, |
| 104 | .size = (12*SZ_128K), |
| 105 | .mask_flags = MTD_WRITEABLE, /* force read-only */ |
| 106 | }, |
| 107 | /* bootloader params in the next sector */ |
| 108 | { |
| 109 | .name = "params", |
| 110 | .offset = MTDPART_OFS_NXTBLK, |
| 111 | .size = SZ_128K, |
| 112 | .mask_flags = MTD_WRITEABLE, /* force read-only */ |
| 113 | }, |
| 114 | /* kernel */ |
| 115 | { |
| 116 | .name = "kernel", |
| 117 | .offset = MTDPART_OFS_NXTBLK, |
| 118 | .size = SZ_4M, |
| 119 | .mask_flags = 0, |
| 120 | }, |
| 121 | /* file system */ |
| 122 | { |
| 123 | .name = "filesystem", |
| 124 | .offset = MTDPART_OFS_NXTBLK, |
| 125 | .size = MTDPART_SIZ_FULL, |
| 126 | .mask_flags = 0, |
| 127 | } |
| 128 | }; |
| 129 | |
| 130 | static struct davinci_nand_pdata nand_config = { |
| 131 | .mask_cle = 0x4000, |
| 132 | .mask_ale = 0x2000, |
| 133 | .parts = nand_partitions, |
| 134 | .nr_parts = ARRAY_SIZE(nand_partitions), |
| 135 | .ecc_mode = NAND_ECC_HW, |
| 136 | .options = NAND_USE_FLASH_BBT, |
| 137 | .ecc_bits = 1, |
| 138 | }; |
| 139 | |
| 140 | static struct davinci_uart_config serial_config __initconst = { |
| 141 | .enabled_uarts = BIT(1), |
| 142 | }; |
| 143 | |
| 144 | static struct tnetv107x_device_info evm_device_info __initconst = { |
| 145 | .serial_config = &serial_config, |
| 146 | .mmc_config[1] = &mmc_config, /* controller 1 */ |
| 147 | .nand_config[0] = &nand_config, /* chip select 0 */ |
| 148 | }; |
| 149 | |
| 150 | static __init void tnetv107x_evm_board_init(void) |
| 151 | { |
| 152 | davinci_cfg_reg_list(sdio1_pins); |
| 153 | davinci_cfg_reg_list(uart1_pins); |
| 154 | |
| 155 | tnetv107x_devices_init(&evm_device_info); |
| 156 | } |
| 157 | |
| 158 | #ifdef CONFIG_SERIAL_8250_CONSOLE |
| 159 | static int __init tnetv107x_evm_console_init(void) |
| 160 | { |
| 161 | return add_preferred_console("ttyS", 0, "115200"); |
| 162 | } |
| 163 | console_initcall(tnetv107x_evm_console_init); |
| 164 | #endif |
| 165 | |
| 166 | MACHINE_START(TNETV107X, "TNETV107X EVM") |
| 167 | .phys_io = TNETV107X_IO_BASE, |
| 168 | .io_pg_offst = (TNETV107X_IO_VIRT >> 18) & 0xfffc, |
| 169 | .boot_params = (TNETV107X_DDR_BASE + 0x100), |
| 170 | .map_io = tnetv107x_init, |
| 171 | .init_irq = cp_intc_init, |
| 172 | .timer = &davinci_timer, |
| 173 | .init_machine = tnetv107x_evm_board_init, |
| 174 | MACHINE_END |