b0161caa72
When refactoring and breaking out the includes for the machine-specific GPIO configuration, two files were created in <linux/platform_data/gpio-samsung-s3c[24|64]xx.h>, but as that namespace shall be used for defining data exchanged between machines and drivers, using it for these broad macros and config settings is wrong. Move the headers back into the machine-local <mach/gpio-samsung.h> file and think about the next step. Reported-by: Arnd Bergmann <arnd@arndb.de> Cc: Tomasz Figa <tomasz.figa@gmail.com> Cc: Sylwester Nawrocki <sylvester.nawrocki@gmail.com> Cc: Ben Dooks <ben-linux@fluff.org> Cc: Kukjin Kim <kgene.kim@samsung.com> Cc: linux-samsung-soc@vger.kernel.org Acked-by: Mark Brown <broonie@linaro.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Heiko Stuebner <heiko@sntech.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
132 lines
2.8 KiB
C
132 lines
2.8 KiB
C
/* linux/arch/arm/mach-s3c2410/usb-simtec.c
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*
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* Copyright 2004-2005 Simtec Electronics
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* Ben Dooks <ben@simtec.co.uk>
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*
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* http://www.simtec.co.uk/products/EB2410ITX/
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*
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* Simtec BAST and Thorcom VR1000 USB port support functions
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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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#define DEBUG
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#include <linux/kernel.h>
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#include <linux/types.h>
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#include <linux/interrupt.h>
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#include <linux/list.h>
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#include <linux/gpio.h>
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#include <linux/timer.h>
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#include <linux/init.h>
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#include <linux/device.h>
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#include <linux/io.h>
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#include <asm/mach/arch.h>
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#include <asm/mach/map.h>
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#include <asm/mach/irq.h>
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#include <mach/hardware.h>
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#include <mach/gpio-samsung.h>
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#include <asm/irq.h>
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#include <linux/platform_data/usb-ohci-s3c2410.h>
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#include <plat/devs.h>
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#include "bast.h"
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#include "simtec.h"
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/* control power and monitor over-current events on various Simtec
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* designed boards.
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*/
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static unsigned int power_state[2];
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static void
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usb_simtec_powercontrol(int port, int to)
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{
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pr_debug("usb_simtec_powercontrol(%d,%d)\n", port, to);
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power_state[port] = to;
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if (power_state[0] && power_state[1])
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gpio_set_value(S3C2410_GPB(4), 0);
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else
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gpio_set_value(S3C2410_GPB(4), 1);
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}
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static irqreturn_t
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usb_simtec_ocirq(int irq, void *pw)
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{
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struct s3c2410_hcd_info *info = pw;
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if (gpio_get_value(S3C2410_GPG(10)) == 0) {
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pr_debug("usb_simtec: over-current irq (oc detected)\n");
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s3c2410_usb_report_oc(info, 3);
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} else {
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pr_debug("usb_simtec: over-current irq (oc cleared)\n");
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s3c2410_usb_report_oc(info, 0);
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}
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return IRQ_HANDLED;
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}
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static void usb_simtec_enableoc(struct s3c2410_hcd_info *info, int on)
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{
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int ret;
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if (on) {
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ret = request_irq(BAST_IRQ_USBOC, usb_simtec_ocirq,
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IRQF_DISABLED | IRQF_TRIGGER_RISING |
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IRQF_TRIGGER_FALLING,
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"USB Over-current", info);
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if (ret != 0) {
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printk(KERN_ERR "failed to request usb oc irq\n");
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}
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} else {
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free_irq(BAST_IRQ_USBOC, info);
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}
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}
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static struct s3c2410_hcd_info usb_simtec_info __initdata = {
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.port[0] = {
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.flags = S3C_HCDFLG_USED
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},
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.port[1] = {
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.flags = S3C_HCDFLG_USED
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},
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.power_control = usb_simtec_powercontrol,
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.enable_oc = usb_simtec_enableoc,
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};
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int __init usb_simtec_init(void)
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{
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int ret;
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printk("USB Power Control, Copyright 2004 Simtec Electronics\n");
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ret = gpio_request(S3C2410_GPB(4), "USB power control");
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if (ret < 0) {
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pr_err("%s: failed to get GPB4\n", __func__);
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return ret;
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}
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ret = gpio_request(S3C2410_GPG(10), "USB overcurrent");
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if (ret < 0) {
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pr_err("%s: failed to get GPG10\n", __func__);
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gpio_free(S3C2410_GPB(4));
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return ret;
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}
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/* turn power on */
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gpio_direction_output(S3C2410_GPB(4), 1);
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gpio_direction_input(S3C2410_GPG(10));
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s3c_ohci_set_platdata(&usb_simtec_info);
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return 0;
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}
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