166 lines
4.2 KiB
C
166 lines
4.2 KiB
C
/*
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* linux/arch/arm/mach-omap1/devices.c
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*
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* OMAP1 platform device setup/initialization
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*/
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#include <linux/config.h>
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#include <linux/module.h>
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#include <linux/kernel.h>
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#include <linux/init.h>
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#include <linux/platform_device.h>
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#include <asm/hardware.h>
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#include <asm/io.h>
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#include <asm/mach-types.h>
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#include <asm/mach/map.h>
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#include <asm/arch/tc.h>
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#include <asm/arch/board.h>
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#include <asm/arch/mux.h>
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#include <asm/arch/gpio.h>
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#if defined(CONFIG_OMAP1610_IR) || defined(CONFIG_OMAP161O_IR_MODULE)
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static u64 irda_dmamask = 0xffffffff;
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static struct platform_device omap1610ir_device = {
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.name = "omap1610-ir",
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.id = -1,
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.dev = {
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.dma_mask = &irda_dmamask,
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},
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};
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static void omap_init_irda(void)
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{
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/* FIXME define and use a boot tag, members something like:
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* u8 uart; // uart1, or uart3
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* ... but driver only handles uart3 for now
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* s16 fir_sel; // gpio for SIR vs FIR
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* ... may prefer a callback for SIR/MIR/FIR mode select;
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* while h2 uses a GPIO, H3 uses a gpio expander
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*/
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if (machine_is_omap_h2()
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|| machine_is_omap_h3())
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(void) platform_device_register(&omap1610ir_device);
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}
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#else
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static inline void omap_init_irda(void) {}
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#endif
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/*-------------------------------------------------------------------------*/
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#if defined(CONFIG_OMAP_RTC) || defined(CONFIG_OMAP_RTC)
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#define OMAP_RTC_BASE 0xfffb4800
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static struct resource rtc_resources[] = {
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{
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.start = OMAP_RTC_BASE,
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.end = OMAP_RTC_BASE + 0x5f,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = INT_RTC_TIMER,
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.flags = IORESOURCE_IRQ,
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},
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{
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.start = INT_RTC_ALARM,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device omap_rtc_device = {
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.name = "omap_rtc",
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.id = -1,
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.num_resources = ARRAY_SIZE(rtc_resources),
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.resource = rtc_resources,
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};
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static void omap_init_rtc(void)
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{
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(void) platform_device_register(&omap_rtc_device);
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}
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#else
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static inline void omap_init_rtc(void) {}
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#endif
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#if defined(CONFIG_OMAP_STI)
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#define OMAP1_STI_BASE IO_ADDRESS(0xfffea000)
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#define OMAP1_STI_CHANNEL_BASE (OMAP1_STI_BASE + 0x400)
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static struct resource sti_resources[] = {
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{
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.start = OMAP1_STI_BASE,
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.end = OMAP1_STI_BASE + SZ_1K - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = OMAP1_STI_CHANNEL_BASE,
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.end = OMAP1_STI_CHANNEL_BASE + SZ_1K - 1,
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.flags = IORESOURCE_MEM,
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},
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{
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.start = INT_1610_STI,
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.flags = IORESOURCE_IRQ,
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}
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};
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static struct platform_device sti_device = {
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.name = "sti",
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.id = -1,
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.num_resources = ARRAY_SIZE(sti_resources),
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.resource = sti_resources,
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};
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static inline void omap_init_sti(void)
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{
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platform_device_register(&sti_device);
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}
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#else
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static inline void omap_init_sti(void) {}
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#endif
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/*-------------------------------------------------------------------------*/
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/*
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* This gets called after board-specific INIT_MACHINE, and initializes most
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* on-chip peripherals accessible on this board (except for few like USB):
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*
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* (a) Does any "standard config" pin muxing needed. Board-specific
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* code will have muxed GPIO pins and done "nonstandard" setup;
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* that code could live in the boot loader.
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* (b) Populating board-specific platform_data with the data drivers
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* rely on to handle wiring variations.
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* (c) Creating platform devices as meaningful on this board and
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* with this kernel configuration.
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*
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* Claiming GPIOs, and setting their direction and initial values, is the
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* responsibility of the device drivers. So is responding to probe().
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*
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* Board-specific knowlege like creating devices or pin setup is to be
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* kept out of drivers as much as possible. In particular, pin setup
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* may be handled by the boot loader, and drivers should expect it will
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* normally have been done by the time they're probed.
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*/
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static int __init omap1_init_devices(void)
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{
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/* please keep these calls, and their implementations above,
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* in alphabetical order so they're easier to sort through.
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*/
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omap_init_irda();
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omap_init_rtc();
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omap_init_sti();
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return 0;
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}
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arch_initcall(omap1_init_devices);
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