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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 | ||
3ed0bcb4 | 34 | #include "board-mx31lite.h" |
e3372474 | 35 | #include "common.h" |
06606ff1 | 36 | #include "devices-imx31.h" |
50f2de61 | 37 | #include "hardware.h" |
267dd34c | 38 | #include "iomux-mx3.h" |
b7d91a62 DM |
39 | |
40 | /* | |
41 | * This file contains board-specific initialization routines for the | |
42 | * LogicPD i.MX31 SOM-LV development board, aka 'LiteKit'. | |
43 | * If you design an own baseboard for the module, use this file as base | |
44 | * for support code. | |
45 | */ | |
46 | ||
47 | static unsigned int litekit_db_board_pins[] __initdata = { | |
48 | /* UART1 */ | |
49 | MX31_PIN_CTS1__CTS1, | |
50 | MX31_PIN_RTS1__RTS1, | |
51 | MX31_PIN_TXD1__TXD1, | |
52 | MX31_PIN_RXD1__RXD1, | |
84677d11 DM |
53 | /* SPI 0 */ |
54 | MX31_PIN_CSPI1_SCLK__SCLK, | |
55 | MX31_PIN_CSPI1_MOSI__MOSI, | |
56 | MX31_PIN_CSPI1_MISO__MISO, | |
57 | MX31_PIN_CSPI1_SPI_RDY__SPI_RDY, | |
58 | MX31_PIN_CSPI1_SS0__SS0, | |
59 | MX31_PIN_CSPI1_SS1__SS1, | |
60 | MX31_PIN_CSPI1_SS2__SS2, | |
70c91a38 VZ |
61 | /* SDHC1 */ |
62 | MX31_PIN_SD1_DATA0__SD1_DATA0, | |
63 | MX31_PIN_SD1_DATA1__SD1_DATA1, | |
64 | MX31_PIN_SD1_DATA2__SD1_DATA2, | |
65 | MX31_PIN_SD1_DATA3__SD1_DATA3, | |
66 | MX31_PIN_SD1_CLK__SD1_CLK, | |
67 | MX31_PIN_SD1_CMD__SD1_CMD, | |
b7d91a62 DM |
68 | }; |
69 | ||
70 | /* UART */ | |
16cf5c41 | 71 | static const struct imxuart_platform_data uart_pdata __initconst = { |
b7d91a62 DM |
72 | .flags = IMXUART_HAVE_RTSCTS, |
73 | }; | |
74 | ||
364cd540 DM |
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 | \ | |
70c91a38 | 80 | PAD_CTL_ODE_CMOS) |
364cd540 DM |
81 | |
82 | static int mxc_mmc1_get_ro(struct device *dev) | |
83 | { | |
70c91a38 | 84 | return gpio_get_value(IOMUX_TO_GPIO(MX31_PIN_GPIO1_6)); |
364cd540 DM |
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 | ||
70c91a38 VZ |
95 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA0, |
96 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); | |
97 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA1, | |
98 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); | |
99 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA2, | |
100 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); | |
101 | mxc_iomux_set_pad(MX31_PIN_SD1_DATA3, | |
102 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); | |
103 | mxc_iomux_set_pad(MX31_PIN_SD1_CMD, | |
104 | MMC_PAD_CFG | PAD_CTL_PUE_PUD | PAD_CTL_100K_PU); | |
364cd540 | 105 | mxc_iomux_set_pad(MX31_PIN_SD1_CLK, MMC_PAD_CFG); |
364cd540 DM |
106 | |
107 | ret = gpio_request(gpio_det, "MMC detect"); | |
108 | if (ret) | |
109 | return ret; | |
110 | ||
111 | ret = gpio_request(gpio_wp, "MMC w/p"); | |
112 | if (ret) | |
113 | goto exit_free_det; | |
114 | ||
115 | gpio_direction_input(gpio_det); | |
116 | gpio_direction_input(gpio_wp); | |
117 | ||
ed175343 SG |
118 | ret = request_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)), |
119 | detect_irq, | |
70c91a38 | 120 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, |
364cd540 DM |
121 | "MMC detect", data); |
122 | if (ret) | |
123 | goto exit_free_wp; | |
124 | ||
125 | return 0; | |
126 | ||
127 | exit_free_wp: | |
128 | gpio_free(gpio_wp); | |
129 | ||
130 | exit_free_det: | |
131 | gpio_free(gpio_det); | |
132 | ||
133 | return ret; | |
134 | } | |
135 | ||
136 | static void mxc_mmc1_exit(struct device *dev, void *data) | |
137 | { | |
138 | gpio_free(gpio_det); | |
139 | gpio_free(gpio_wp); | |
ed175343 | 140 | free_irq(gpio_to_irq(IOMUX_TO_GPIO(MX31_PIN_DCD_DCE1)), data); |
364cd540 DM |
141 | } |
142 | ||
6a697e3d | 143 | static const struct imxmmc_platform_data mmc_pdata __initconst = { |
364cd540 DM |
144 | .get_ro = mxc_mmc1_get_ro, |
145 | .init = mxc_mmc1_init, | |
146 | .exit = mxc_mmc1_exit, | |
147 | }; | |
148 | ||
84677d11 DM |
149 | /* SPI */ |
150 | ||
151 | static int spi_internal_chipselect[] = { | |
152 | MXC_SPI_CS(0), | |
153 | MXC_SPI_CS(1), | |
154 | MXC_SPI_CS(2), | |
155 | }; | |
156 | ||
06606ff1 | 157 | static const struct spi_imx_master spi0_pdata __initconst = { |
84677d11 DM |
158 | .chipselect = spi_internal_chipselect, |
159 | .num_chipselect = ARRAY_SIZE(spi_internal_chipselect), | |
160 | }; | |
161 | ||
81057f32 DM |
162 | /* GPIO LEDs */ |
163 | ||
47e837b5 | 164 | static const struct gpio_led litekit_leds[] __initconst = { |
81057f32 DM |
165 | { |
166 | .name = "GPIO0", | |
167 | .gpio = IOMUX_TO_GPIO(MX31_PIN_COMPARE), | |
168 | .active_low = 1, | |
169 | .default_state = LEDS_GPIO_DEFSTATE_OFF, | |
170 | }, | |
171 | { | |
172 | .name = "GPIO1", | |
173 | .gpio = IOMUX_TO_GPIO(MX31_PIN_CAPTURE), | |
174 | .active_low = 1, | |
175 | .default_state = LEDS_GPIO_DEFSTATE_OFF, | |
176 | } | |
177 | }; | |
178 | ||
47e837b5 UKK |
179 | static const struct gpio_led_platform_data |
180 | litekit_led_platform_data __initconst = { | |
81057f32 DM |
181 | .leds = litekit_leds, |
182 | .num_leds = ARRAY_SIZE(litekit_leds), | |
183 | }; | |
184 | ||
b7d91a62 DM |
185 | void __init mx31lite_db_init(void) |
186 | { | |
187 | mxc_iomux_setup_multiple_pins(litekit_db_board_pins, | |
188 | ARRAY_SIZE(litekit_db_board_pins), | |
189 | "development board pins"); | |
16cf5c41 | 190 | imx31_add_imx_uart0(&uart_pdata); |
6a697e3d | 191 | imx31_add_mxc_mmc(0, &mmc_pdata); |
06606ff1 | 192 | imx31_add_spi_imx0(&spi0_pdata); |
47e837b5 | 193 | gpio_led_register_device(-1, &litekit_led_platform_data); |
bec31a85 BT |
194 | imx31_add_imx2_wdt(); |
195 | imx31_add_mxc_rtc(); | |
b7d91a62 | 196 | } |