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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 | |
23 | #include <linux/kernel.h> |
24 | #include <linux/types.h> |
25 | #include <linux/init.h> |
26 | #include <linux/gpio.h> |
27 | #include <linux/leds.h> |
28 | #include <linux/platform_device.h> |
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/iomux-mx3.h> |
37 | #include <mach/board-mx31lite.h> |
38 | #include <mach/mmc.h> |
39 | |
40 | #include "devices-imx31.h" |
41 | #include "devices.h" |
42 | |
43 | /* |
44 | * This file contains board-specific initialization routines for the |
45 | * LogicPD i.MX31 SOM-LV development board, aka 'LiteKit'. |
46 | * If you design an own baseboard for the module, use this file as base |
47 | * for support code. |
48 | */ |
49 | |
50 | static unsigned int litekit_db_board_pins[] __initdata = { |
51 | /* UART1 */ |
52 | MX31_PIN_CTS1__CTS1, |
53 | MX31_PIN_RTS1__RTS1, |
54 | MX31_PIN_TXD1__TXD1, |
55 | MX31_PIN_RXD1__RXD1, |
56 | /* SPI 0 */ |
57 | MX31_PIN_CSPI1_SCLK__SCLK, |
58 | MX31_PIN_CSPI1_MOSI__MOSI, |
59 | MX31_PIN_CSPI1_MISO__MISO, |
60 | MX31_PIN_CSPI1_SPI_RDY__SPI_RDY, |
61 | MX31_PIN_CSPI1_SS0__SS0, |
62 | MX31_PIN_CSPI1_SS1__SS1, |
63 | MX31_PIN_CSPI1_SS2__SS2, |
64 | /* SDHC1 */ |
65 | MX31_PIN_SD1_DATA0__SD1_DATA0, |
66 | MX31_PIN_SD1_DATA1__SD1_DATA1, |
67 | MX31_PIN_SD1_DATA2__SD1_DATA2, |
68 | MX31_PIN_SD1_DATA3__SD1_DATA3, |
69 | MX31_PIN_SD1_CLK__SD1_CLK, |
70 | MX31_PIN_SD1_CMD__SD1_CMD, |
71 | }; |
72 | |
73 | /* UART */ |
74 | static const struct imxuart_platform_data uart_pdata __initconst = { |
75 | .flags = IMXUART_HAVE_RTSCTS, |
76 | }; |
77 | |
78 | /* MMC */ |
79 | |
80 | static int gpio_det, gpio_wp; |
81 | |
82 | #define MMC_PAD_CFG (PAD_CTL_DRV_MAX | PAD_CTL_SRE_FAST | PAD_CTL_HYS_CMOS | \ |
83 | PAD_CTL_ODE_CMOS) |
84 | |
85 | static int mxc_mmc1_get_ro(struct device *dev) |
86 | { |
87 | return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_GPIO1_6)); |
88 | } |
89 | |
90 | static int mxc_mmc1_init(struct device *dev, |
91 | irq_handler_t detect_irq, void *data) |
92 | { |
93 | int ret; |
94 | |
95 | gpio_det = IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1); |
96 | gpio_wp = IOMUX_TO_GPIO(MX31_PIN_GPIO1_6); |
97 | |
98 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA0, |
99 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); |
100 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA1, |
101 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); |
102 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA2, |
103 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); |
104 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA3, |
105 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); |
106 | mxc_iomux_set_pad(MX31_PIN_SD1_CMD, |
107 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); |
108 | mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG); |
109 | |
110 | ret = gpio_request(gpio_det, "MMC detect"); |
111 | if (ret) |
112 | return ret; |
113 | |
114 | ret = gpio_request(gpio_wp, "MMC w/p"); |
115 | if (ret) |
116 | goto exit_free_det; |
117 | |
118 | gpio_direction_input(gpio_det); |
119 | gpio_direction_input(gpio_wp); |
120 | |
121 | ret = request_irq(IOMUX_TO_IRQ(MX31_PIN_DCD_DCE1), detect_irq, |
122 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, |
123 | "MMC detect", data); |
124 | if (ret) |
125 | goto exit_free_wp; |
126 | |
127 | return 0; |
128 | |
129 | exit_free_wp: |
130 | gpio_free(gpio_wp); |
131 | |
132 | exit_free_det: |
133 | gpio_free(gpio_det); |
134 | |
135 | return ret; |
136 | } |
137 | |
138 | static void mxc_mmc1_exit(struct device *dev, void *data) |
139 | { |
140 | gpio_free(gpio_det); |
141 | gpio_free(gpio_wp); |
142 | free_irq(IOMUX_TO_IRQ(MX31_PIN_DCD_DCE1), data); |
143 | } |
144 | |
145 | static struct imxmmc_platform_data mmc_pdata = { |
146 | .get_ro = mxc_mmc1_get_ro, |
147 | .init = mxc_mmc1_init, |
148 | .exit = mxc_mmc1_exit, |
149 | }; |
150 | |
151 | /* SPI */ |
152 | |
153 | static int spi_internal_chipselect[] = { |
154 | MXC_SPI_CS(0), |
155 | MXC_SPI_CS(1), |
156 | MXC_SPI_CS(2), |
157 | }; |
158 | |
159 | static const struct spi_imx_master spi0_pdata __initconst = { |
160 | .chipselect = spi_internal_chipselect, |
161 | .num_chipselect = ARRAY_SIZE(spi_internal_chipselect), |
162 | }; |
163 | |
164 | /* GPIO LEDs */ |
165 | |
166 | static struct gpio_led litekit_leds[] = { |
167 | { |
168 | .name = "GPIO0", |
169 | .gpio = IOMUX_TO_GPIO(MX31_PIN_COMPARE), |
170 | .active_low = 1, |
171 | .default_state = LEDS_GPIO_DEFSTATE_OFF, |
172 | }, |
173 | { |
174 | .name = "GPIO1", |
175 | .gpio = IOMUX_TO_GPIO(MX31_PIN_CAPTURE), |
176 | .active_low = 1, |
177 | .default_state = LEDS_GPIO_DEFSTATE_OFF, |
178 | } |
179 | }; |
180 | |
181 | static struct gpio_led_platform_data litekit_led_platform_data = { |
182 | .leds = litekit_leds, |
183 | .num_leds = ARRAY_SIZE(litekit_leds), |
184 | }; |
185 | |
186 | static struct platform_device litekit_led_device = { |
187 | .name = "leds-gpio", |
188 | .id = -1, |
189 | .dev = { |
190 | .platform_data = &litekit_led_platform_data, |
191 | }, |
192 | }; |
193 | |
194 | void __init mx31lite_db_init(void) |
195 | { |
196 | mxc_iomux_setup_multiple_pins(litekit_db_board_pins, |
197 | ARRAY_SIZE(litekit_db_board_pins), |
198 | "development board pins"); |
199 | imx31_add_imx_uart0(&uart_pdata); |
200 | mxc_register_device(&mxcsdhc_device0, &mmc_pdata); |
201 | imx31_add_spi_imx0(&spi0_pdata); |
202 | platform_device_register(&litekit_led_device); |
203 | mxc_register_device(&imx_wdt_device0, NULL); |
204 | mxc_register_device(&imx_rtc_device0, NULL); |
205 | } |
206 | |
207 |
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