[ARM] OMAP2 SDRC: add SDRAM timing parameter infrastructure
[linux-3.10.git] / arch / arm / mach-omap2 / board-ldp.c
1 /*
2  * linux/arch/arm/mach-omap2/board-ldp.c
3  *
4  * Copyright (C) 2008 Texas Instruments Inc.
5  * Nishant Kamat <nskamat@ti.com>
6  *
7  * Modified from mach-omap2/board-3430sdp.c
8  *
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License version 2 as
11  * published by the Free Software Foundation.
12  */
13
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/platform_device.h>
17 #include <linux/delay.h>
18 #include <linux/input.h>
19 #include <linux/workqueue.h>
20 #include <linux/err.h>
21 #include <linux/clk.h>
22 #include <linux/spi/spi.h>
23 #include <linux/spi/ads7846.h>
24 #include <linux/i2c/twl4030.h>
25
26 #include <mach/hardware.h>
27 #include <asm/mach-types.h>
28 #include <asm/mach/arch.h>
29 #include <asm/mach/map.h>
30
31 #include <mach/board-ldp.h>
32 #include <mach/mcspi.h>
33 #include <mach/gpio.h>
34 #include <mach/board.h>
35 #include <mach/common.h>
36 #include <mach/gpmc.h>
37
38 #include <asm/io.h>
39 #include <asm/delay.h>
40 #include <mach/control.h>
41
42 #include "mmc-twl4030.h"
43
44 #define SDP3430_SMC91X_CS       3
45
46 static struct resource ldp_smc911x_resources[] = {
47         [0] = {
48                 .start  = OMAP34XX_ETHR_START,
49                 .end    = OMAP34XX_ETHR_START + SZ_4K,
50                 .flags  = IORESOURCE_MEM,
51         },
52         [1] = {
53                 .start  = 0,
54                 .end    = 0,
55                 .flags  = IORESOURCE_IRQ | IORESOURCE_IRQ_LOWLEVEL,
56         },
57 };
58
59 static struct platform_device ldp_smc911x_device = {
60         .name           = "smc911x",
61         .id             = -1,
62         .num_resources  = ARRAY_SIZE(ldp_smc911x_resources),
63         .resource       = ldp_smc911x_resources,
64 };
65
66 static struct platform_device *ldp_devices[] __initdata = {
67         &ldp_smc911x_device,
68 };
69
70 static inline void __init ldp_init_smc911x(void)
71 {
72         int eth_cs;
73         unsigned long cs_mem_base;
74         int eth_gpio = 0;
75
76         eth_cs = LDP_SMC911X_CS;
77
78         if (gpmc_cs_request(eth_cs, SZ_16M, &cs_mem_base) < 0) {
79                 printk(KERN_ERR "Failed to request GPMC mem for smc911x\n");
80                 return;
81         }
82
83         ldp_smc911x_resources[0].start = cs_mem_base + 0x0;
84         ldp_smc911x_resources[0].end   = cs_mem_base + 0xf;
85         udelay(100);
86
87         eth_gpio = LDP_SMC911X_GPIO;
88
89         ldp_smc911x_resources[1].start = OMAP_GPIO_IRQ(eth_gpio);
90
91         if (gpio_request(eth_gpio, "smc911x irq") < 0) {
92                 printk(KERN_ERR "Failed to request GPIO%d for smc911x IRQ\n",
93                                 eth_gpio);
94                 return;
95         }
96         gpio_direction_input(eth_gpio);
97 }
98
99 static void __init omap_ldp_init_irq(void)
100 {
101         omap2_init_common_hw(NULL);
102         omap_init_irq();
103         omap_gpio_init();
104         ldp_init_smc911x();
105 }
106
107 static struct omap_uart_config ldp_uart_config __initdata = {
108         .enabled_uarts  = ((1 << 0) | (1 << 1) | (1 << 2)),
109 };
110
111 static struct omap_board_config_kernel ldp_config[] __initdata = {
112         { OMAP_TAG_UART,        &ldp_uart_config },
113 };
114
115 static struct twl4030_gpio_platform_data ldp_gpio_data = {
116         .gpio_base      = OMAP_MAX_GPIO_LINES,
117         .irq_base       = TWL4030_GPIO_IRQ_BASE,
118         .irq_end        = TWL4030_GPIO_IRQ_END,
119 };
120
121 static struct twl4030_platform_data ldp_twldata = {
122         .irq_base       = TWL4030_IRQ_BASE,
123         .irq_end        = TWL4030_IRQ_END,
124
125         /* platform_data for children goes here */
126         .gpio           = &ldp_gpio_data,
127 };
128
129 static struct i2c_board_info __initdata ldp_i2c_boardinfo[] = {
130         {
131                 I2C_BOARD_INFO("twl4030", 0x48),
132                 .flags = I2C_CLIENT_WAKE,
133                 .irq = INT_34XX_SYS_NIRQ,
134                 .platform_data = &ldp_twldata,
135         },
136 };
137
138 static int __init omap_i2c_init(void)
139 {
140         omap_register_i2c_bus(1, 2600, ldp_i2c_boardinfo,
141                         ARRAY_SIZE(ldp_i2c_boardinfo));
142         omap_register_i2c_bus(2, 400, NULL, 0);
143         omap_register_i2c_bus(3, 400, NULL, 0);
144         return 0;
145 }
146
147 static struct twl4030_hsmmc_info mmc[] __initdata = {
148         {
149                 .mmc            = 1,
150                 .wires          = 4,
151                 .gpio_cd        = -EINVAL,
152                 .gpio_wp        = -EINVAL,
153         },
154         {}      /* Terminator */
155 };
156
157 static void __init omap_ldp_init(void)
158 {
159         omap_i2c_init();
160         platform_add_devices(ldp_devices, ARRAY_SIZE(ldp_devices));
161         omap_board_config = ldp_config;
162         omap_board_config_size = ARRAY_SIZE(ldp_config);
163         omap_serial_init();
164         twl4030_mmc_init(mmc);
165 }
166
167 static void __init omap_ldp_map_io(void)
168 {
169         omap2_set_globals_343x();
170         omap2_map_common_io();
171 }
172
173 MACHINE_START(OMAP_LDP, "OMAP LDP board")
174         .phys_io        = 0x48000000,
175         .io_pg_offst    = ((0xd8000000) >> 18) & 0xfffc,
176         .boot_params    = 0x80000100,
177         .map_io         = omap_ldp_map_io,
178         .init_irq       = omap_ldp_init_irq,
179         .init_machine   = omap_ldp_init,
180         .timer          = &omap_timer,
181 MACHINE_END