Daniel Mack | b7d91a6 | 2009-11-19 12:02:06 +0100 | [diff] [blame] | 1 | /* |
| 2 | * LogicPD i.MX31 SOM-LV development board support |
| 3 | * |
| 4 | * Copyright (c) 2009 Daniel Mack <daniel@caiaq.de> |
| 5 | * |
| 6 | * based on code for other MX31 boards, |
| 7 | * |
| 8 | * Copyright 2005-2007 Freescale Semiconductor |
| 9 | * Copyright (c) 2009 Alberto Panizzo <maramaopercheseimorto@gmail.com> |
| 10 | * Copyright (C) 2009 Valentin Longchamp, EPFL Mobots group |
| 11 | * |
| 12 | * This program is free software; you can redistribute it and/or modify |
| 13 | * it under the terms of the GNU General Public License as published by |
| 14 | * the Free Software Foundation; either version 2 of the License, or |
| 15 | * (at your option) any later version. |
| 16 | * |
| 17 | * This program is distributed in the hope that it will be useful, |
| 18 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 19 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 20 | * GNU General Public License for more details. |
| 21 | * |
| 22 | * You should have received a copy of the GNU General Public License |
| 23 | * along with this program; if not, write to the Free Software |
| 24 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 25 | */ |
| 26 | |
| 27 | #include <linux/kernel.h> |
| 28 | #include <linux/types.h> |
| 29 | #include <linux/init.h> |
| 30 | #include <linux/gpio.h> |
Daniel Mack | 84677d1 | 2009-11-19 12:02:08 +0100 | [diff] [blame^] | 31 | #include <linux/platform_device.h> |
Daniel Mack | b7d91a6 | 2009-11-19 12:02:06 +0100 | [diff] [blame] | 32 | |
| 33 | #include <asm/mach-types.h> |
| 34 | #include <asm/mach/arch.h> |
| 35 | #include <asm/mach/map.h> |
| 36 | |
| 37 | #include <mach/hardware.h> |
| 38 | #include <mach/common.h> |
| 39 | #include <mach/imx-uart.h> |
| 40 | #include <mach/iomux-mx3.h> |
| 41 | #include <mach/board-mx31lite.h> |
Daniel Mack | 364cd54 | 2009-11-19 12:02:07 +0100 | [diff] [blame] | 42 | #include <mach/mmc.h> |
Daniel Mack | 84677d1 | 2009-11-19 12:02:08 +0100 | [diff] [blame^] | 43 | #include <mach/spi.h> |
Daniel Mack | b7d91a6 | 2009-11-19 12:02:06 +0100 | [diff] [blame] | 44 | |
| 45 | #include "devices.h" |
| 46 | |
| 47 | /* |
| 48 | * This file contains board-specific initialization routines for the |
| 49 | * LogicPD i.MX31 SOM-LV development board, aka 'LiteKit'. |
| 50 | * If you design an own baseboard for the module, use this file as base |
| 51 | * for support code. |
| 52 | */ |
| 53 | |
| 54 | static unsigned int litekit_db_board_pins[] __initdata = { |
| 55 | /* UART1 */ |
| 56 | MX31_PIN_CTS1__CTS1, |
| 57 | MX31_PIN_RTS1__RTS1, |
| 58 | MX31_PIN_TXD1__TXD1, |
| 59 | MX31_PIN_RXD1__RXD1, |
Daniel Mack | 84677d1 | 2009-11-19 12:02:08 +0100 | [diff] [blame^] | 60 | /* SPI 0 */ |
| 61 | MX31_PIN_CSPI1_SCLK__SCLK, |
| 62 | MX31_PIN_CSPI1_MOSI__MOSI, |
| 63 | MX31_PIN_CSPI1_MISO__MISO, |
| 64 | MX31_PIN_CSPI1_SPI_RDY__SPI_RDY, |
| 65 | MX31_PIN_CSPI1_SS0__SS0, |
| 66 | MX31_PIN_CSPI1_SS1__SS1, |
| 67 | MX31_PIN_CSPI1_SS2__SS2, |
Daniel Mack | b7d91a6 | 2009-11-19 12:02:06 +0100 | [diff] [blame] | 68 | }; |
| 69 | |
| 70 | /* UART */ |
| 71 | static struct imxuart_platform_data uart_pdata __initdata = { |
| 72 | .flags = IMXUART_HAVE_RTSCTS, |
| 73 | }; |
| 74 | |
Daniel Mack | 364cd54 | 2009-11-19 12:02:07 +0100 | [diff] [blame] | 75 | /* MMC */ |
| 76 | |
| 77 | static int gpio_det, gpio_wp; |
| 78 | |
| 79 | #define MMC_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \ |
| 80 | PAD_CTL_ODE_CMOS | PAD_CTL_100K_PU) |
| 81 | |
| 82 | static int mxc_mmc1_get_ro(struct device *dev) |
| 83 | { |
| 84 | return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_LCS0)); |
| 85 | } |
| 86 | |
| 87 | static int mxc_mmc1_init(struct device *dev, |
| 88 | irq_handler_t detect_irq, void *data) |
| 89 | { |
| 90 | int ret; |
| 91 | |
| 92 | gpio_det = IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1); |
| 93 | gpio_wp = IOMUX_TO_GPIO(MX31_PIN_GPIO1_6); |
| 94 | |
| 95 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA0, MMC_PAD_CFG); |
| 96 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA1, MMC_PAD_CFG); |
| 97 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA2, MMC_PAD_CFG); |
| 98 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA3, MMC_PAD_CFG); |
| 99 | mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG); |
| 100 | mxc_iomux_set_pad(MX31_PIN_SD1_CMD, MMC_PAD_CFG); |
| 101 | |
| 102 | ret = gpio_request(gpio_det, "MMC detect"); |
| 103 | if (ret) |
| 104 | return ret; |
| 105 | |
| 106 | ret = gpio_request(gpio_wp, "MMC w/p"); |
| 107 | if (ret) |
| 108 | goto exit_free_det; |
| 109 | |
| 110 | gpio_direction_input(gpio_det); |
| 111 | gpio_direction_input(gpio_wp); |
| 112 | |
| 113 | ret = request_irq(IOMUX_TO_IRQ(MX31_PIN_DCD_DCE1), detect_irq, |
| 114 | IRQF_DISABLED | IRQF_TRIGGER_FALLING, |
| 115 | "MMC detect", data); |
| 116 | if (ret) |
| 117 | goto exit_free_wp; |
| 118 | |
| 119 | return 0; |
| 120 | |
| 121 | exit_free_wp: |
| 122 | gpio_free(gpio_wp); |
| 123 | |
| 124 | exit_free_det: |
| 125 | gpio_free(gpio_det); |
| 126 | |
| 127 | return ret; |
| 128 | } |
| 129 | |
| 130 | static void mxc_mmc1_exit(struct device *dev, void *data) |
| 131 | { |
| 132 | gpio_free(gpio_det); |
| 133 | gpio_free(gpio_wp); |
| 134 | free_irq(IOMUX_TO_IRQ(MX31_PIN_GPIO1_1), data); |
| 135 | } |
| 136 | |
| 137 | static struct imxmmc_platform_data mmc_pdata = { |
| 138 | .get_ro = mxc_mmc1_get_ro, |
| 139 | .init = mxc_mmc1_init, |
| 140 | .exit = mxc_mmc1_exit, |
| 141 | }; |
| 142 | |
Daniel Mack | 84677d1 | 2009-11-19 12:02:08 +0100 | [diff] [blame^] | 143 | /* SPI */ |
| 144 | |
| 145 | static int spi_internal_chipselect[] = { |
| 146 | MXC_SPI_CS(0), |
| 147 | MXC_SPI_CS(1), |
| 148 | MXC_SPI_CS(2), |
| 149 | }; |
| 150 | |
| 151 | static struct spi_imx_master spi0_pdata = { |
| 152 | .chipselect = spi_internal_chipselect, |
| 153 | .num_chipselect = ARRAY_SIZE(spi_internal_chipselect), |
| 154 | }; |
| 155 | |
Daniel Mack | b7d91a6 | 2009-11-19 12:02:06 +0100 | [diff] [blame] | 156 | void __init mx31lite_db_init(void) |
| 157 | { |
| 158 | mxc_iomux_setup_multiple_pins(litekit_db_board_pins, |
| 159 | ARRAY_SIZE(litekit_db_board_pins), |
| 160 | "development board pins"); |
| 161 | mxc_register_device(&mxc_uart_device0, &uart_pdata); |
Daniel Mack | 364cd54 | 2009-11-19 12:02:07 +0100 | [diff] [blame] | 162 | mxc_register_device(&mxcsdhc_device0, &mmc_pdata); |
Daniel Mack | 84677d1 | 2009-11-19 12:02:08 +0100 | [diff] [blame^] | 163 | mxc_register_device(&mxc_spi_device0, &spi0_pdata); |
Daniel Mack | b7d91a6 | 2009-11-19 12:02:06 +0100 | [diff] [blame] | 164 | } |
| 165 | |