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For some platforms, it is inappropriate to register all PXA UARTs. In some cases, the UARTs may not be used, and in others we may want to avoid registering the UARTs to allow other drivers (eg, FICP) to make use of the UART. In addition, a while back there was a request to be able to pass platform data to the UART driver. This patch enables all of this by providing functions platforms can call to register each individual UART. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Mike Rapoport <mike@compulab.co.il> Acked-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Eric Miao <eric.y.miao@gmail.com>
104 lines
2.3 KiB
C
104 lines
2.3 KiB
C
/*
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* linux/arch/arm/mach-pxa/mp900.c
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*
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* Support for the NEC MobilePro900/C platform
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*
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* Based on mach-pxa/gumstix.c
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*
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* 2007, 2008 Kristoffer Ericson <kristoffer.ericson@gmail.com>
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* 2007, 2008 Michael Petchkovsky <mkpetch@internode.on.net>
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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 version 2 as
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* published by the Free Software Foundation.
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*/
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/platform_device.h>
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#include <linux/types.h>
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#include <linux/usb/isp116x.h>
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#include <asm/mach-types.h>
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#include <asm/mach/arch.h>
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#include <mach/pxa25x.h>
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#include "generic.h"
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static void isp116x_pfm_delay(struct device *dev, int delay)
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{
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/* 400Mhz PXA2 = 2.5ns / instruction */
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int cyc = delay / 10;
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/* 4 Instructions = 4 x 2.5ns = 10ns */
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__asm__ volatile ("0:\n"
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"subs %0, %1, #1\n"
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"bge 0b\n"
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:"=r" (cyc)
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:"0"(cyc)
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);
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}
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static struct isp116x_platform_data isp116x_pfm_data = {
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.remote_wakeup_enable = 1,
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.delay = isp116x_pfm_delay,
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};
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static struct resource isp116x_pfm_resources[] = {
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[0] = {
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.start = 0x0d000000,
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.end = 0x0d000000 + 1,
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.flags = IORESOURCE_MEM,
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},
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[1] = {
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.start = 0x0d000000 + 4,
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.end = 0x0d000000 + 5,
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.flags = IORESOURCE_MEM,
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},
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[2] = {
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.start = 61,
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.end = 61,
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.flags = IORESOURCE_IRQ,
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},
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};
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static struct platform_device mp900c_dummy_device = {
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.name = "mp900c_dummy",
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.id = -1,
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};
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static struct platform_device mp900c_usb = {
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.name = "isp116x-hcd",
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.num_resources = ARRAY_SIZE(isp116x_pfm_resources),
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.resource = isp116x_pfm_resources,
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.dev.platform_data = &isp116x_pfm_data,
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};
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static struct platform_device *devices[] __initdata = {
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&mp900c_dummy_device,
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&mp900c_usb,
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};
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static void __init mp900c_init(void)
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{
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printk(KERN_INFO "MobilePro 900/C machine init\n");
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pxa_set_ffuart_info(NULL);
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pxa_set_btuart_info(NULL);
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pxa_set_stuart_info(NULL);
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platform_add_devices(devices, ARRAY_SIZE(devices));
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}
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/* Maintainer - Michael Petchkovsky <mkpetch@internode.on.net> */
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MACHINE_START(NEC_MP900, "MobilePro900/C")
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.phys_io = 0x40000000,
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.boot_params = 0xa0220100,
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.io_pg_offst = (io_p2v(0x40000000) >> 18) & 0xfffc,
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.timer = &pxa_timer,
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.map_io = pxa_map_io,
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.init_irq = pxa25x_init_irq,
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.init_machine = mp900c_init,
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MACHINE_END
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