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988d2d49 VL |
1 | /* |
2 | * Copyright (C) 2008 Valentin Longchamp, EPFL Mobots group | |
3 | * | |
4 | * This program is free software; you can redistribute it and/or modify | |
5 | * it under the terms of the GNU General Public License as published by | |
6 | * the Free Software Foundation; either version 2 of the License, or | |
7 | * (at your option) any later version. | |
8 | * | |
9 | * This program is distributed in the hope that it will be useful, | |
10 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | * GNU General Public License for more details. | |
13 | * | |
14 | * You should have received a copy of the GNU General Public License | |
15 | * along with this program; if not, write to the Free Software | |
16 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA | |
17 | */ | |
18 | ||
45b131a7 | 19 | #include <linux/gpio.h> |
988d2d49 | 20 | #include <linux/init.h> |
45b131a7 | 21 | #include <linux/interrupt.h> |
220bbcea | 22 | #include <linux/memory.h> |
988d2d49 VL |
23 | #include <linux/mtd/physmap.h> |
24 | #include <linux/mtd/partitions.h> | |
220bbcea VL |
25 | #include <linux/platform_device.h> |
26 | #include <linux/types.h> | |
988d2d49 | 27 | |
988d2d49 VL |
28 | #include <asm/mach-types.h> |
29 | #include <asm/mach/arch.h> | |
30 | #include <asm/mach/time.h> | |
31 | #include <asm/mach/map.h> | |
220bbcea | 32 | #include <mach/board-mx31moboard.h> |
988d2d49 | 33 | #include <mach/common.h> |
220bbcea | 34 | #include <mach/hardware.h> |
988d2d49 VL |
35 | #include <mach/imx-uart.h> |
36 | #include <mach/iomux-mx3.h> | |
4ec6ecc7 | 37 | #include <mach/i2c.h> |
45b131a7 | 38 | #include <mach/mmc.h> |
988d2d49 VL |
39 | |
40 | #include "devices.h" | |
41 | ||
220bbcea VL |
42 | static unsigned int moboard_pins[] = { |
43 | /* UART0 */ | |
44 | MX31_PIN_CTS1__CTS1, MX31_PIN_RTS1__RTS1, | |
45 | MX31_PIN_TXD1__TXD1, MX31_PIN_RXD1__RXD1, | |
46 | /* UART4 */ | |
47 | MX31_PIN_PC_RST__CTS5, MX31_PIN_PC_VS2__RTS5, | |
48 | MX31_PIN_PC_BVD2__TXD5, MX31_PIN_PC_BVD1__RXD5, | |
56c7a45b VL |
49 | /* I2C0 */ |
50 | MX31_PIN_I2C_DAT__I2C1_SDA, MX31_PIN_I2C_CLK__I2C1_SCL, | |
51 | /* I2C1 */ | |
52 | MX31_PIN_DCD_DTE1__I2C2_SDA, MX31_PIN_RI_DTE1__I2C2_SCL, | |
53 | /* SDHC1 */ | |
54 | MX31_PIN_SD1_DATA3__SD1_DATA3, MX31_PIN_SD1_DATA2__SD1_DATA2, | |
55 | MX31_PIN_SD1_DATA1__SD1_DATA1, MX31_PIN_SD1_DATA0__SD1_DATA0, | |
56 | MX31_PIN_SD1_CLK__SD1_CLK, MX31_PIN_SD1_CMD__SD1_CMD, | |
57 | MX31_PIN_ATA_CS0__GPIO3_26, MX31_PIN_ATA_CS1__GPIO3_27, | |
220bbcea VL |
58 | }; |
59 | ||
988d2d49 VL |
60 | static struct physmap_flash_data mx31moboard_flash_data = { |
61 | .width = 2, | |
62 | }; | |
63 | ||
64 | static struct resource mx31moboard_flash_resource = { | |
65 | .start = 0xa0000000, | |
66 | .end = 0xa1ffffff, | |
67 | .flags = IORESOURCE_MEM, | |
68 | }; | |
69 | ||
70 | static struct platform_device mx31moboard_flash = { | |
71 | .name = "physmap-flash", | |
72 | .id = 0, | |
73 | .dev = { | |
74 | .platform_data = &mx31moboard_flash_data, | |
75 | }, | |
76 | .resource = &mx31moboard_flash_resource, | |
77 | .num_resources = 1, | |
78 | }; | |
79 | ||
80 | static struct imxuart_platform_data uart_pdata = { | |
81 | .flags = IMXUART_HAVE_RTSCTS, | |
82 | }; | |
83 | ||
4ec6ecc7 VL |
84 | static struct imxi2c_platform_data moboard_i2c0_pdata = { |
85 | .bitrate = 400000, | |
86 | }; | |
87 | ||
88 | static struct imxi2c_platform_data moboard_i2c1_pdata = { | |
89 | .bitrate = 100000, | |
90 | }; | |
91 | ||
45b131a7 VL |
92 | #define SDHC1_CD IOMUX_TO_GPIO(MX31_PIN_ATA_CS0) |
93 | #define SDHC1_WP IOMUX_TO_GPIO(MX31_PIN_ATA_CS1) | |
94 | ||
95 | static int moboard_sdhc1_get_ro(struct device *dev) | |
96 | { | |
97 | return gpio_get_value(SDHC1_WP); | |
98 | } | |
99 | ||
100 | static int moboard_sdhc1_init(struct device *dev, irq_handler_t detect_irq, | |
101 | void *data) | |
102 | { | |
4f163eb8 SH |
103 | int ret; |
104 | ||
105 | ret = gpio_request(SDHC1_CD, "sdhc-detect"); | |
106 | if (ret) | |
107 | return ret; | |
108 | ||
109 | gpio_direction_input(SDHC1_CD); | |
110 | ||
111 | ret = gpio_request(SDHC1_WP, "sdhc-wp"); | |
112 | if (ret) | |
113 | goto err_gpio_free; | |
114 | gpio_direction_input(SDHC1_WP); | |
115 | ||
116 | ret = request_irq(gpio_to_irq(SDHC1_CD), detect_irq, | |
45b131a7 VL |
117 | IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING, |
118 | "sdhc1-card-detect", data); | |
4f163eb8 SH |
119 | if (ret) |
120 | goto err_gpio_free_2; | |
121 | ||
122 | return 0; | |
123 | ||
124 | err_gpio_free_2: | |
125 | gpio_free(SDHC1_WP); | |
126 | err_gpio_free: | |
127 | gpio_free(SDHC1_CD); | |
128 | ||
129 | return ret; | |
45b131a7 VL |
130 | } |
131 | ||
132 | static void moboard_sdhc1_exit(struct device *dev, void *data) | |
133 | { | |
134 | free_irq(gpio_to_irq(SDHC1_CD), data); | |
4f163eb8 SH |
135 | gpio_free(SDHC1_WP); |
136 | gpio_free(SDHC1_CD); | |
45b131a7 VL |
137 | } |
138 | ||
139 | static struct imxmmc_platform_data sdhc1_pdata = { | |
140 | .get_ro = moboard_sdhc1_get_ro, | |
141 | .init = moboard_sdhc1_init, | |
142 | .exit = moboard_sdhc1_exit, | |
143 | }; | |
144 | ||
988d2d49 VL |
145 | static struct platform_device *devices[] __initdata = { |
146 | &mx31moboard_flash, | |
147 | }; | |
148 | ||
e00f0b4a VL |
149 | static int mx31moboard_baseboard; |
150 | core_param(mx31moboard_baseboard, mx31moboard_baseboard, int, 0444); | |
151 | ||
988d2d49 VL |
152 | /* |
153 | * Board specific initialization. | |
154 | */ | |
155 | static void __init mxc_board_init(void) | |
156 | { | |
220bbcea VL |
157 | mxc_iomux_setup_multiple_pins(moboard_pins, ARRAY_SIZE(moboard_pins), |
158 | "moboard"); | |
159 | ||
988d2d49 VL |
160 | platform_add_devices(devices, ARRAY_SIZE(devices)); |
161 | ||
988d2d49 | 162 | mxc_register_device(&mxc_uart_device0, &uart_pdata); |
988d2d49 | 163 | mxc_register_device(&mxc_uart_device4, &uart_pdata); |
e00f0b4a | 164 | |
4ec6ecc7 VL |
165 | mxc_register_device(&mxc_i2c_device0, &moboard_i2c0_pdata); |
166 | mxc_register_device(&mxc_i2c_device1, &moboard_i2c1_pdata); | |
167 | ||
45b131a7 VL |
168 | mxc_register_device(&mxcsdhc_device0, &sdhc1_pdata); |
169 | ||
e00f0b4a VL |
170 | switch (mx31moboard_baseboard) { |
171 | case MX31NOBOARD: | |
172 | break; | |
173 | case MX31DEVBOARD: | |
174 | mx31moboard_devboard_init(); | |
175 | break; | |
176 | case MX31MARXBOT: | |
177 | mx31moboard_marxbot_init(); | |
178 | break; | |
179 | default: | |
220bbcea VL |
180 | printk(KERN_ERR "Illegal mx31moboard_baseboard type %d\n", |
181 | mx31moboard_baseboard); | |
e00f0b4a | 182 | } |
988d2d49 VL |
183 | } |
184 | ||
988d2d49 VL |
185 | static void __init mx31moboard_timer_init(void) |
186 | { | |
30c730f8 | 187 | mx31_clocks_init(26000000); |
988d2d49 VL |
188 | } |
189 | ||
190 | struct sys_timer mx31moboard_timer = { | |
191 | .init = mx31moboard_timer_init, | |
192 | }; | |
193 | ||
194 | MACHINE_START(MX31MOBOARD, "EPFL Mobots mx31moboard") | |
195 | /* Maintainer: Valentin Longchamp, EPFL Mobots group */ | |
196 | .phys_io = AIPS1_BASE_ADDR, | |
197 | .io_pg_offst = ((AIPS1_BASE_ADDR_VIRT) >> 18) & 0xfffc, | |
198 | .boot_params = PHYS_OFFSET + 0x100, | |
cd4a05f9 | 199 | .map_io = mx31_map_io, |
988d2d49 VL |
200 | .init_irq = mxc_init_irq, |
201 | .init_machine = mxc_board_init, | |
202 | .timer = &mx31moboard_timer, | |
203 | MACHINE_END | |
204 |