projects / deliverable / linux.git / blame
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|---|---|---|
| b7d91a62 DM |
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. | |
| b7d91a62 DM |
21 | */ |
| 22 | ||
| 23 | #include <linux/kernel.h> | |
| 24 | #include <linux/types.h> | |
| 25 | #include <linux/init.h> | |
| 26 | #include <linux/gpio.h> | |
| 81057f32 DM |
27 | #include <linux/leds.h> |
| 28 | #include <linux/platform_device.h> | |
| b7d91a62 DM |
29 | |
| 30 | #include <asm/mach-types.h> | |
| 31 | #include <asm/mach/arch.h> | |
| 32 | #include <asm/mach/map.h> | |
| 33 | ||
| 34 | #include <mach/hardware.h> | |
| 35 | #include <mach/common.h> | |
| 36 | #include <mach/imx-uart.h> | |
| 37 | #include <mach/iomux-mx3.h> | |
| 38 | #include <mach/board-mx31lite.h> | |
| 364cd540 | 39 | #include <mach/mmc.h> |
| 84677d11 | 40 | #include <mach/spi.h> |
| b7d91a62 DM |
41 | |
| 42 | #include "devices.h" | |
| 43 | ||
| 44 | /* | |
| 45 | * This file contains board-specific initialization routines for the | |
| 46 | * LogicPD i.MX31 SOM-LV development board, aka 'LiteKit'. | |
| 47 | * If you design an own baseboard for the module, use this file as base | |
| 48 | * for support code. | |
| 49 | */ | |
| 50 | ||
| 51 | static unsigned int litekit_db_board_pins[] __initdata = { | |
| 52 | /* UART1 */ | |
| 53 | MX31_PIN_CTS1__CTS1, | |
| 54 | MX31_PIN_RTS1__RTS1, | |
| 55 | MX31_PIN_TXD1__TXD1, | |
| 56 | MX31_PIN_RXD1__RXD1, | |
| 84677d11 DM |
57 | /* SPI 0 */ |
| 58 | MX31_PIN_CSPI1_SCLK__SCLK, | |
| 59 | MX31_PIN_CSPI1_MOSI__MOSI, | |
| 60 | MX31_PIN_CSPI1_MISO__MISO, | |
| 61 | MX31_PIN_CSPI1_SPI_RDY__SPI_RDY, | |
| 62 | MX31_PIN_CSPI1_SS0__SS0, | |
| 63 | MX31_PIN_CSPI1_SS1__SS1, | |
| 64 | MX31_PIN_CSPI1_SS2__SS2, | |
| 70c91a38 VZ |
65 | /* SDHC1 */ |
| 66 | MX31_PIN_SD1_DATA0__SD1_DATA0, | |
| 67 | MX31_PIN_SD1_DATA1__SD1_DATA1, | |
| 68 | MX31_PIN_SD1_DATA2__SD1_DATA2, | |
| 69 | MX31_PIN_SD1_DATA3__SD1_DATA3, | |
| 70 | MX31_PIN_SD1_CLK__SD1_CLK, | |
| 71 | MX31_PIN_SD1_CMD__SD1_CMD, | |
| b7d91a62 DM |
72 | }; |
| 73 | ||
| 74 | /* UART */ | |
| 75 | static struct imxuart_platform_data uart_pdata __initdata = { | |
| 76 | .flags = IMXUART_HAVE_RTSCTS, | |
| 77 | }; | |
| 78 | ||
| 364cd540 DM |
79 | /* MMC */ |
| 80 | ||
| 81 | static int gpio_det, gpio_wp; | |
| 82 | ||
| 83 | #define MMC_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \ | |
| 70c91a38 | 84 | PAD_CTL_ODE_CMOS) |
| 364cd540 DM |
85 | |
| 86 | static int mxc_mmc1_get_ro(struct device *dev) | |
| 87 | { | |
| 70c91a38 | 88 | return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_GPIO1_6)); |
| 364cd540 DM |
89 | } |
| 90 | ||
| 91 | static int mxc_mmc1_init(struct device *dev, | |
| 92 | irq_handler_t detect_irq, void *data) | |
| 93 | { | |
| 94 | int ret; | |
| 95 | ||
| 96 | gpio_det = IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1); | |
| 97 | gpio_wp = IOMUX_TO_GPIO(MX31_PIN_GPIO1_6); | |
| 98 | ||
| 70c91a38 VZ |
99 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA0, |
| 100 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); | |
| 101 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA1, | |
| 102 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); | |
| 103 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA2, | |
| 104 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); | |
| 105 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA3, | |
| 106 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); | |
| 107 | mxc_iomux_set_pad(MX31_PIN_SD1_CMD, | |
| 108 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); | |
| 364cd540 | 109 | mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG); |
| 364cd540 DM |
110 | |
| 111 | ret = gpio_request(gpio_det, "MMC detect"); | |
| 112 | if (ret) | |
| 113 | return ret; | |
| 114 | ||
| 115 | ret = gpio_request(gpio_wp, "MMC w/p"); | |
| 116 | if (ret) | |
| 117 | goto exit_free_det; | |
| 118 | ||
| 119 | gpio_direction_input(gpio_det); | |
| 120 | gpio_direction_input(gpio_wp); | |
| 121 | ||
| 122 | ret = request_irq(IOMUX_TO_IRQ(MX31_PIN_DCD_DCE1), detect_irq, | |
| 70c91a38 | 123 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, |
| 364cd540 DM |
124 | "MMC detect", data); |
| 125 | if (ret) | |
| 126 | goto exit_free_wp; | |
| 127 | ||
| 128 | return 0; | |
| 129 | ||
| 130 | exit_free_wp: | |
| 131 | gpio_free(gpio_wp); | |
| 132 | ||
| 133 | exit_free_det: | |
| 134 | gpio_free(gpio_det); | |
| 135 | ||
| 136 | return ret; | |
| 137 | } | |
| 138 | ||
| 139 | static void mxc_mmc1_exit(struct device *dev, void *data) | |
| 140 | { | |
| 141 | gpio_free(gpio_det); | |
| 142 | gpio_free(gpio_wp); | |
| 70c91a38 | 143 | free_irq(IOMUX_TO_IRQ(MX31_PIN_DCD_DCE1), data); |
| 364cd540 DM |
144 | } |
| 145 | ||
| 146 | static struct imxmmc_platform_data mmc_pdata = { | |
| 147 | .get_ro = mxc_mmc1_get_ro, | |
| 148 | .init = mxc_mmc1_init, | |
| 149 | .exit = mxc_mmc1_exit, | |
| 150 | }; | |
| 151 | ||
| 84677d11 DM |
152 | /* SPI */ |
| 153 | ||
| 154 | static int spi_internal_chipselect[] = { | |
| 155 | MXC_SPI_CS(0), | |
| 156 | MXC_SPI_CS(1), | |
| 157 | MXC_SPI_CS(2), | |
| 158 | }; | |
| 159 | ||
| 160 | static struct spi_imx_master spi0_pdata = { | |
| 161 | .chipselect = spi_internal_chipselect, | |
| 162 | .num_chipselect = ARRAY_SIZE(spi_internal_chipselect), | |
| 163 | }; | |
| 164 | ||
| 81057f32 DM |
165 | /* GPIO LEDs */ |
| 166 | ||
| 167 | static struct gpio_led litekit_leds[] = { | |
| 168 | { | |
| 169 | .name = "GPIO0", | |
| 170 | .gpio = IOMUX_TO_GPIO(MX31_PIN_COMPARE), | |
| 171 | .active_low = 1, | |
| 172 | .default_state = LEDS_GPIO_DEFSTATE_OFF, | |
| 173 | }, | |
| 174 | { | |
| 175 | .name = "GPIO1", | |
| 176 | .gpio = IOMUX_TO_GPIO(MX31_PIN_CAPTURE), | |
| 177 | .active_low = 1, | |
| 178 | .default_state = LEDS_GPIO_DEFSTATE_OFF, | |
| 179 | } | |
| 180 | }; | |
| 181 | ||
| 182 | static struct gpio_led_platform_data litekit_led_platform_data = { | |
| 183 | .leds = litekit_leds, | |
| 184 | .num_leds = ARRAY_SIZE(litekit_leds), | |
| 185 | }; | |
| 186 | ||
| 187 | static struct platform_device litekit_led_device = { | |
| 188 | .name = "leds-gpio", | |
| 189 | .id = -1, | |
| 190 | .dev = { | |
| 191 | .platform_data = &litekit_led_platform_data, | |
| 192 | }, | |
| 193 | }; | |
| 194 | ||
| b7d91a62 DM |
195 | void __init mx31lite_db_init(void) |
| 196 | { | |
| 197 | mxc_iomux_setup_multiple_pins(litekit_db_board_pins, | |
| 198 | ARRAY_SIZE(litekit_db_board_pins), | |
| 199 | "development board pins"); | |
| 200 | mxc_register_device(&mxc_uart_device0, &uart_pdata); | |
| 364cd540 | 201 | mxc_register_device(&mxcsdhc_device0, &mmc_pdata); |
| 84677d11 | 202 | mxc_register_device(&mxc_spi_device0, &spi0_pdata); |
| 81057f32 | 203 | platform_device_register(&litekit_led_device); |
| 7d7a77e5 | 204 | mxc_register_device(&imx_wdt_device0, NULL); |
| 8bcc84ad | 205 | mxc_register_device(&imx_rtc_device0, NULL); |
| b7d91a62 DM |
206 | } |
| 207 |