2 * linux/arch/arm/mach-omap1/devices.c
4 * OMAP1 platform device setup/initialization
6 * This program is free software; you can redistribute it and/or modify
7 * it under the terms of the GNU General Public License as published by
8 * the Free Software Foundation; either version 2 of the License, or
9 * (at your option) any later version.
12 #include <linux/config.h>
13 #include <linux/module.h>
14 #include <linux/kernel.h>
15 #include <linux/init.h>
16 #include <linux/platform_device.h>
18 #include <asm/hardware.h>
20 #include <asm/mach-types.h>
21 #include <asm/mach/map.h>
23 #include <asm/arch/tc.h>
24 #include <asm/arch/board.h>
25 #include <asm/arch/mux.h>
26 #include <asm/arch/gpio.h>
28 extern void omap_nop_release(struct device *dev);
30 /*-------------------------------------------------------------------------*/
32 #if defined(CONFIG_OMAP1610_IR) || defined(CONFIG_OMAP161O_IR_MODULE)
34 static u64 irda_dmamask = 0xffffffff;
36 static struct platform_device omap1610ir_device = {
37 .name = "omap1610-ir",
40 .release = omap_nop_release,
41 .dma_mask = &irda_dmamask,
45 static void omap_init_irda(void)
47 /* FIXME define and use a boot tag, members something like:
48 * u8 uart; // uart1, or uart3
49 * ... but driver only handles uart3 for now
50 * s16 fir_sel; // gpio for SIR vs FIR
51 * ... may prefer a callback for SIR/MIR/FIR mode select;
52 * while h2 uses a GPIO, H3 uses a gpio expander
54 if (machine_is_omap_h2()
55 || machine_is_omap_h3())
56 (void) platform_device_register(&omap1610ir_device);
59 static inline void omap_init_irda(void) {}
62 /*-------------------------------------------------------------------------*/
64 #if defined(CONFIG_OMAP_RTC) || defined(CONFIG_OMAP_RTC)
66 #define OMAP_RTC_BASE 0xfffb4800
68 static struct resource rtc_resources[] = {
70 .start = OMAP_RTC_BASE,
71 .end = OMAP_RTC_BASE + 0x5f,
72 .flags = IORESOURCE_MEM,
75 .start = INT_RTC_TIMER,
76 .flags = IORESOURCE_IRQ,
79 .start = INT_RTC_ALARM,
80 .flags = IORESOURCE_IRQ,
84 static struct platform_device omap_rtc_device = {
88 .release = omap_nop_release,
90 .num_resources = ARRAY_SIZE(rtc_resources),
91 .resource = rtc_resources,
94 static void omap_init_rtc(void)
96 (void) platform_device_register(&omap_rtc_device);
99 static inline void omap_init_rtc(void) {}
102 #if defined(CONFIG_OMAP_STI)
104 #define OMAP1_STI_BASE IO_ADDRESS(0xfffea000)
105 #define OMAP1_STI_CHANNEL_BASE (OMAP1_STI_BASE + 0x400)
107 static struct resource sti_resources[] = {
109 .start = OMAP1_STI_BASE,
110 .end = OMAP1_STI_BASE + SZ_1K - 1,
111 .flags = IORESOURCE_MEM,
114 .start = OMAP1_STI_CHANNEL_BASE,
115 .end = OMAP1_STI_CHANNEL_BASE + SZ_1K - 1,
116 .flags = IORESOURCE_MEM,
119 .start = INT_1610_STI,
120 .flags = IORESOURCE_IRQ,
124 static struct platform_device sti_device = {
128 .release = omap_nop_release,
130 .num_resources = ARRAY_SIZE(sti_resources),
131 .resource = sti_resources,
134 static inline void omap_init_sti(void)
136 platform_device_register(&sti_device);
139 static inline void omap_init_sti(void) {}
142 /*-------------------------------------------------------------------------*/
145 * This gets called after board-specific INIT_MACHINE, and initializes most
146 * on-chip peripherals accessible on this board (except for few like USB):
148 * (a) Does any "standard config" pin muxing needed. Board-specific
149 * code will have muxed GPIO pins and done "nonstandard" setup;
150 * that code could live in the boot loader.
151 * (b) Populating board-specific platform_data with the data drivers
152 * rely on to handle wiring variations.
153 * (c) Creating platform devices as meaningful on this board and
154 * with this kernel configuration.
156 * Claiming GPIOs, and setting their direction and initial values, is the
157 * responsibility of the device drivers. So is responding to probe().
159 * Board-specific knowlege like creating devices or pin setup is to be
160 * kept out of drivers as much as possible. In particular, pin setup
161 * may be handled by the boot loader, and drivers should expect it will
162 * normally have been done by the time they're probed.
164 static int __init omap1_init_devices(void)
166 /* please keep these calls, and their implementations above,
167 * in alphabetical order so they're easier to sort through.
175 arch_initcall(omap1_init_devices);