forked from Minki/linux
f2c73464d7
This is the branch where we usually queue up cleanup efforts, moving
drivers out of the architecture directory, header file restructuring,
etc. Sometimes they tangle with new development so it's hard to keep it
strictly to cleanups.
Some of the things included in this branch are:
* Atmel SAMA5 conversion to common clock
* Reset framework conversion for tegra platforms
- Some of this depends on tegra clock driver reworks that are shared with Mike
Turquette's clk tree.
* Tegra DMA refactoring, which are shared branches with the DMA tree.
* Removal of some header files on exynos to prepare for multiplatform
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Merge tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc
Pull ARM SoC cleanups from Olof Johansson:
"This is the branch where we usually queue up cleanup efforts, moving
drivers out of the architecture directory, header file restructuring,
etc. Sometimes they tangle with new development so it's hard to keep
it strictly to cleanups.
Some of the things included in this branch are:
* Atmel SAMA5 conversion to common clock
* Reset framework conversion for tegra platforms
- Some of this depends on tegra clock driver reworks that are shared
with Mike Turquette's clk tree.
* Tegra DMA refactoring, which are shared branches with the DMA tree.
* Removal of some header files on exynos to prepare for
multiplatform"
* tag 'cleanup-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/arm/arm-soc: (169 commits)
ARM: mvebu: move Armada 370/XP specific definitions to armada-370-xp.h
ARM: mvebu: remove prototypes of non-existing functions from common.h
ARM: mvebu: move ARMADA_XP_MAX_CPUS to armada-370-xp.h
serial: sh-sci: Rework baud rate calculation
serial: sh-sci: Compute overrun_bit without using baud rate algo
serial: sh-sci: Remove unused GPIO request code
serial: sh-sci: Move overrun_bit and error_mask fields out of pdata
serial: sh-sci: Support resources passed through platform resources
serial: sh-sci: Don't check IRQ in verify port operation
serial: sh-sci: Set the UPF_FIXED_PORT flag
serial: sh-sci: Remove duplicate interrupt check in verify port op
serial: sh-sci: Simplify baud rate calculation algorithms
serial: sh-sci: Remove baud rate calculation algorithm 5
serial: sh-sci: Sort headers alphabetically
ARM: EXYNOS: Kill exynos_pm_late_initcall()
ARM: EXYNOS: Consolidate selection of PM_GENERIC_DOMAINS for Exynos4
ARM: at91: switch Calao QIL-A9260 board to DT
clk: at91: fix pmc_clk_ids data type attriubte
PM / devfreq: use inclusion <mach/map.h> instead of <plat/map-s5p.h>
ARM: EXYNOS: remove <mach/regs-clock.h> for exynos
...
131 lines
2.8 KiB
C
131 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_TRIGGER_RISING | 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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