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Release 4.14 arch/mips/ralink/reset.c

Directory: arch/mips/ralink
/*
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 as published
 * by the Free Software Foundation.
 *
 * Copyright (C) 2008-2009 Gabor Juhos <juhosg@openwrt.org>
 * Copyright (C) 2008 Imre Kaloz <kaloz@openwrt.org>
 * Copyright (C) 2013 John Crispin <john@phrozen.org>
 */

#include <linux/pm.h>
#include <linux/io.h>
#include <linux/of.h>
#include <linux/delay.h>
#include <linux/reset-controller.h>

#include <asm/reboot.h>

#include <asm/mach-ralink/ralink_regs.h>

/* Reset Control */

#define SYSC_REG_RESET_CTRL	0x034


#define RSTCTL_RESET_PCI	BIT(26)

#define RSTCTL_RESET_SYSTEM	BIT(0)


static int ralink_assert_device(struct reset_controller_dev *rcdev, unsigned long id) { u32 val; if (id < 8) return -1; val = rt_sysc_r32(SYSC_REG_RESET_CTRL); val |= BIT(id); rt_sysc_w32(val, SYSC_REG_RESET_CTRL); return 0; }

Contributors

PersonTokensPropCommitsCommitProp
John Crispin52100.00%1100.00%
Total52100.00%1100.00%


static int ralink_deassert_device(struct reset_controller_dev *rcdev, unsigned long id) { u32 val; if (id < 8) return -1; val = rt_sysc_r32(SYSC_REG_RESET_CTRL); val &= ~BIT(id); rt_sysc_w32(val, SYSC_REG_RESET_CTRL); return 0; }

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John Crispin53100.00%1100.00%
Total53100.00%1100.00%


static int ralink_reset_device(struct reset_controller_dev *rcdev, unsigned long id) { ralink_assert_device(rcdev, id); return ralink_deassert_device(rcdev, id); }

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PersonTokensPropCommitsCommitProp
John Crispin30100.00%1100.00%
Total30100.00%1100.00%

static const struct reset_control_ops reset_ops = { .reset = ralink_reset_device, .assert = ralink_assert_device, .deassert = ralink_deassert_device, }; static struct reset_controller_dev reset_dev = { .ops = &reset_ops, .owner = THIS_MODULE, .nr_resets = 32, .of_reset_n_cells = 1, };
void ralink_rst_init(void) { reset_dev.of_node = of_find_compatible_node(NULL, NULL, "ralink,rt2880-reset"); if (!reset_dev.of_node) pr_err("Failed to find reset controller node"); else reset_controller_register(&reset_dev); }

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PersonTokensPropCommitsCommitProp
John Crispin39100.00%1100.00%
Total39100.00%1100.00%


static void ralink_restart(char *command) { if (IS_ENABLED(CONFIG_PCI)) { rt_sysc_m32(0, RSTCTL_RESET_PCI, SYSC_REG_RESET_CTRL); mdelay(50); } local_irq_disable(); rt_sysc_w32(RSTCTL_RESET_SYSTEM, SYSC_REG_RESET_CTRL); unreachable(); }

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PersonTokensPropCommitsCommitProp
John Crispin46100.00%2100.00%
Total46100.00%2100.00%


static void ralink_halt(void) { local_irq_disable(); unreachable(); }

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PersonTokensPropCommitsCommitProp
John Crispin14100.00%1100.00%
Total14100.00%1100.00%


static int __init mips_reboot_setup(void) { _machine_restart = ralink_restart; _machine_halt = ralink_halt; return 0; }

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PersonTokensPropCommitsCommitProp
John Crispin20100.00%1100.00%
Total20100.00%1100.00%

arch_initcall(mips_reboot_setup);

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PersonTokensPropCommitsCommitProp
John Crispin34499.71%480.00%
Philipp Zabel10.29%120.00%
Total345100.00%5100.00%
Directory: arch/mips/ralink
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