Commit | Line | Data |
---|---|---|
a8135fcf AP |
1 | /* |
2 | * arch/arm/mach-iop32x/em7210.c | |
3 | * | |
4 | * Board support code for the Lanner EM7210 platforms. | |
5 | * | |
6 | * Based on arch/arm/mach-iop32x/iq31244.c file. | |
7 | * | |
8 | * Copyright (C) 2007 Arnaud Patard <arnaud.patard@rtp-net.org> | |
9 | * | |
10 | * This program is free software; you can redistribute it and/or modify | |
11 | * it under the terms of the GNU General Public License version 2 as | |
12 | * published by the Free Software Foundation. | |
13 | * | |
14 | */ | |
15 | ||
16 | #include <linux/mm.h> | |
17 | #include <linux/init.h> | |
18 | #include <linux/kernel.h> | |
19 | #include <linux/pci.h> | |
20 | #include <linux/pm.h> | |
21 | #include <linux/serial_core.h> | |
22 | #include <linux/serial_8250.h> | |
23 | #include <linux/mtd/physmap.h> | |
24 | #include <linux/platform_device.h> | |
fe885fa2 | 25 | #include <linux/i2c.h> |
afbf1e15 | 26 | #include <linux/gpio.h> |
a09e64fb | 27 | #include <mach/hardware.h> |
a8135fcf AP |
28 | #include <linux/io.h> |
29 | #include <linux/irq.h> | |
30 | #include <asm/mach/arch.h> | |
31 | #include <asm/mach/map.h> | |
32 | #include <asm/mach/pci.h> | |
33 | #include <asm/mach/time.h> | |
34 | #include <asm/mach-types.h> | |
a09e64fb | 35 | #include <mach/time.h> |
7b85b867 | 36 | #include "gpio-iop32x.h" |
a8135fcf AP |
37 | |
38 | static void __init em7210_timer_init(void) | |
39 | { | |
40 | /* http://www.kwaak.net/fotos/fotos-nas/slide_24.html */ | |
41 | /* 33.333 MHz crystal. */ | |
42 | iop_init_time(200000000); | |
43 | } | |
44 | ||
fe885fa2 AP |
45 | /* |
46 | * EM7210 RTC | |
47 | */ | |
48 | static struct i2c_board_info __initdata em7210_i2c_devices[] = { | |
49 | { | |
3760f736 | 50 | I2C_BOARD_INFO("rs5c372a", 0x32), |
fe885fa2 AP |
51 | }, |
52 | }; | |
a8135fcf AP |
53 | |
54 | /* | |
55 | * EM7210 I/O | |
56 | */ | |
57 | static struct map_desc em7210_io_desc[] __initdata = { | |
58 | { /* on-board devices */ | |
59 | .virtual = IQ31244_UART, | |
60 | .pfn = __phys_to_pfn(IQ31244_UART), | |
61 | .length = 0x00100000, | |
62 | .type = MT_DEVICE, | |
63 | }, | |
64 | }; | |
65 | ||
66 | void __init em7210_map_io(void) | |
67 | { | |
68 | iop3xx_map_io(); | |
69 | iotable_init(em7210_io_desc, ARRAY_SIZE(em7210_io_desc)); | |
70 | } | |
71 | ||
72 | ||
73 | /* | |
74 | * EM7210 PCI | |
75 | */ | |
76 | #define INTA IRQ_IOP32X_XINT0 | |
77 | #define INTB IRQ_IOP32X_XINT1 | |
78 | #define INTC IRQ_IOP32X_XINT2 | |
79 | #define INTD IRQ_IOP32X_XINT3 | |
80 | ||
81 | static int __init | |
d5341942 | 82 | em7210_pci_map_irq(const struct pci_dev *dev, u8 slot, u8 pin) |
a8135fcf AP |
83 | { |
84 | static int pci_irq_table[][4] = { | |
85 | /* | |
86 | * PCI IDSEL/INTPIN->INTLINE | |
87 | * A B C D | |
88 | */ | |
89 | {INTB, INTB, INTB, INTB}, /* console / uart */ | |
90 | {INTA, INTA, INTA, INTA}, /* 1st 82541 */ | |
91 | {INTD, INTD, INTD, INTD}, /* 2nd 82541 */ | |
92 | {INTC, INTC, INTC, INTC}, /* GD31244 */ | |
93 | {INTD, INTA, INTA, INTA}, /* mini-PCI */ | |
94 | {INTD, INTC, INTA, INTA}, /* NEC USB */ | |
95 | }; | |
96 | ||
97 | if (pin < 1 || pin > 4) | |
98 | return -1; | |
99 | ||
100 | return pci_irq_table[slot % 6][pin - 1]; | |
101 | } | |
102 | ||
103 | static struct hw_pci em7210_pci __initdata = { | |
a8135fcf | 104 | .nr_controllers = 1, |
c23bfc38 | 105 | .ops = &iop3xx_ops, |
a8135fcf AP |
106 | .setup = iop3xx_pci_setup, |
107 | .preinit = iop3xx_pci_preinit, | |
a8135fcf AP |
108 | .map_irq = em7210_pci_map_irq, |
109 | }; | |
110 | ||
111 | static int __init em7210_pci_init(void) | |
112 | { | |
113 | if (machine_is_em7210()) | |
114 | pci_common_init(&em7210_pci); | |
115 | ||
116 | return 0; | |
117 | } | |
118 | ||
119 | subsys_initcall(em7210_pci_init); | |
120 | ||
121 | ||
122 | /* | |
123 | * EM7210 Flash | |
124 | */ | |
125 | static struct physmap_flash_data em7210_flash_data = { | |
126 | .width = 2, | |
127 | }; | |
128 | ||
129 | static struct resource em7210_flash_resource = { | |
130 | .start = 0xf0000000, | |
131 | .end = 0xf1ffffff, | |
132 | .flags = IORESOURCE_MEM, | |
133 | }; | |
134 | ||
135 | static struct platform_device em7210_flash_device = { | |
136 | .name = "physmap-flash", | |
137 | .id = 0, | |
138 | .dev = { | |
139 | .platform_data = &em7210_flash_data, | |
140 | }, | |
141 | .num_resources = 1, | |
142 | .resource = &em7210_flash_resource, | |
143 | }; | |
144 | ||
145 | ||
146 | /* | |
147 | * EM7210 UART | |
148 | * The physical address of the serial port is 0xfe800000, | |
149 | * so it can be used for physical and virtual address. | |
150 | */ | |
151 | static struct plat_serial8250_port em7210_serial_port[] = { | |
152 | { | |
153 | .mapbase = IQ31244_UART, | |
154 | .membase = (char *)IQ31244_UART, | |
155 | .irq = IRQ_IOP32X_XINT1, | |
156 | .flags = UPF_SKIP_TEST, | |
157 | .iotype = UPIO_MEM, | |
158 | .regshift = 0, | |
159 | .uartclk = 1843200, | |
160 | }, | |
161 | { }, | |
162 | }; | |
163 | ||
164 | static struct resource em7210_uart_resource = { | |
165 | .start = IQ31244_UART, | |
166 | .end = IQ31244_UART + 7, | |
167 | .flags = IORESOURCE_MEM, | |
168 | }; | |
169 | ||
170 | static struct platform_device em7210_serial_device = { | |
171 | .name = "serial8250", | |
172 | .id = PLAT8250_DEV_PLATFORM, | |
173 | .dev = { | |
174 | .platform_data = em7210_serial_port, | |
175 | }, | |
176 | .num_resources = 1, | |
177 | .resource = &em7210_uart_resource, | |
178 | }; | |
179 | ||
afbf1e15 LW |
180 | #define EM7210_HARDWARE_POWER 0 |
181 | ||
a8135fcf AP |
182 | void em7210_power_off(void) |
183 | { | |
afbf1e15 LW |
184 | int ret; |
185 | ||
186 | ret = gpio_direction_output(EM7210_HARDWARE_POWER, 1); | |
187 | if (ret) | |
188 | pr_crit("could not drive power off GPIO high\n"); | |
189 | } | |
190 | ||
191 | static int __init em7210_request_gpios(void) | |
192 | { | |
193 | int ret; | |
194 | ||
195 | if (!machine_is_em7210()) | |
196 | return 0; | |
197 | ||
198 | ret = gpio_request(EM7210_HARDWARE_POWER, "power"); | |
199 | if (ret) { | |
200 | pr_err("could not request power off GPIO\n"); | |
201 | return 0; | |
202 | } | |
203 | ||
204 | pm_power_off = em7210_power_off; | |
205 | ||
206 | return 0; | |
a8135fcf | 207 | } |
afbf1e15 | 208 | device_initcall(em7210_request_gpios); |
a8135fcf AP |
209 | |
210 | static void __init em7210_init_machine(void) | |
211 | { | |
7b85b867 | 212 | register_iop32x_gpio(); |
a8135fcf AP |
213 | platform_device_register(&em7210_serial_device); |
214 | platform_device_register(&iop3xx_i2c0_device); | |
215 | platform_device_register(&iop3xx_i2c1_device); | |
216 | platform_device_register(&em7210_flash_device); | |
217 | platform_device_register(&iop3xx_dma_0_channel); | |
218 | platform_device_register(&iop3xx_dma_1_channel); | |
219 | ||
fe885fa2 AP |
220 | i2c_register_board_info(0, em7210_i2c_devices, |
221 | ARRAY_SIZE(em7210_i2c_devices)); | |
a8135fcf AP |
222 | } |
223 | ||
224 | MACHINE_START(EM7210, "Lanner EM7210") | |
1896746d | 225 | .atag_offset = 0x100, |
a8135fcf AP |
226 | .map_io = em7210_map_io, |
227 | .init_irq = iop32x_init_irq, | |
6bb27d73 | 228 | .init_time = em7210_timer_init, |
a8135fcf | 229 | .init_machine = em7210_init_machine, |
bec92b1e | 230 | .restart = iop3xx_restart, |
a8135fcf | 231 | MACHINE_END |