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authorEduard - Gabriel Munteanu <eduard.munteanu@linux360.ro>2008-07-25 19:45:11 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-26 12:00:04 -0700
commit7babe8db99d305340cf4828ce1f5a1481d5622ef (patch)
treefdac7a084646bb6d125ebc62b0b75806e45d1025 /kernel/softlockup.c
parentc2147a5092cfe13dbf3210e54e8a622015edeecc (diff)
Full conversion to early_initcall() interface, remove old interface
A previous patch added the early_initcall(), to allow a cleaner hooking of pre-SMP initcalls. Now we remove the older interface, converting all existing users to the new one. [akpm@linux-foundation.org: cleanups] [akpm@linux-foundation.org: build fix] [kosaki.motohiro@jp.fujitsu.com: warning fix] [kosaki.motohiro@jp.fujitsu.com: warning fix] Signed-off-by: Eduard - Gabriel Munteanu <eduard.munteanu@linux360.ro> Cc: Tom Zanussi <tzanussi@gmail.com> Signed-off-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'kernel/softlockup.c')
-rw-r--r--kernel/softlockup.c25
1 files changed, 22 insertions, 3 deletions
diff --git a/kernel/softlockup.c b/kernel/softlockup.c
index 7bd8d1aadd5d..b75b492fbfcf 100644
--- a/kernel/softlockup.c
+++ b/kernel/softlockup.c
@@ -338,14 +338,33 @@ static struct notifier_block __cpuinitdata cpu_nfb = {
.notifier_call = cpu_callback
};
-__init void spawn_softlockup_task(void)
+static int __initdata nosoftlockup;
+
+static int __init nosoftlockup_setup(char *str)
+{
+ nosoftlockup = 1;
+ return 1;
+}
+__setup("nosoftlockup", nosoftlockup_setup);
+
+static int __init spawn_softlockup_task(void)
{
void *cpu = (void *)(long)smp_processor_id();
- int err = cpu_callback(&cpu_nfb, CPU_UP_PREPARE, cpu);
+ int err;
- BUG_ON(err == NOTIFY_BAD);
+ if (nosoftlockup)
+ return 0;
+
+ err = cpu_callback(&cpu_nfb, CPU_UP_PREPARE, cpu);
+ if (err == NOTIFY_BAD) {
+ BUG();
+ return 1;
+ }
cpu_callback(&cpu_nfb, CPU_ONLINE, cpu);
register_cpu_notifier(&cpu_nfb);
atomic_notifier_chain_register(&panic_notifier_list, &panic_block);
+
+ return 0;
}
+early_initcall(spawn_softlockup_task);
generated by cgit v1.2.3 (git 2.25.1) at 2024-08-28 13:26:05 +0000
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/*
 * LED Flash class driver for the flash cell of max77693 mfd.
 *
 *	Copyright (C) 2015, Samsung Electronics Co., Ltd.
 *
 *	Authors: Jacek Anaszewski <j.anaszewski@samsung.com>
 *		 Andrzej Hajda <a.hajda@samsung.com>
 *
 * 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.
 */

#include <linux/led-class-flash.h>
#include <linux/mfd/max77693.h>
#include <linux/mfd/max77693-common.h>
#include <linux/mfd/max77693-private.h>
#include <linux/module.h>
#include <linux/mutex.h>
#include <linux/platform_device.h>
#include <linux/regmap.h>
#include <linux/slab.h>
#include <media/v4l2-flash-led-class.h>

#define MODE_OFF		0
#define MODE_FLASH(a)		(1 << (a))
#define MODE_TORCH(a)		(1 << (2 + (a)))
#define MODE_FLASH_EXTERNAL(a)	(1 << (4 + (a)))

#define MODE_FLASH_MASK		(MODE_FLASH(FLED1) | MODE_FLASH(FLED2) | \
				 MODE_FLASH_EXTERNAL(FLED1) | \
				 MODE_FLASH_EXTERNAL(FLED2))
#define MODE_TORCH_MASK		(MODE_TORCH(FLED1) | MODE_TORCH(FLED2))

#define FLED1_IOUT		(1 << 0)
#define FLED2_IOUT		(1 << 1)

enum max77693_fled {
	FLED1,
	FLED2,
};

enum max77693_led_mode {
	FLASH,
	TORCH,
};

struct max77693_led_config_data {
	const char *label[2];
	u32 iout_torch_max[2];
	u32 iout_flash_max[2];
	u32 flash_timeout_max[2];
	u32 num_leds;
	u32 boost_mode;
	u32 boost_vout;
	u32 low_vsys;
};

struct max77693_sub_led {
	/* corresponding FLED output identifier */
	int fled_id;
	/* corresponding LED Flash class device */
	struct led_classdev_flash fled_cdev;
	/* V4L2 Flash device */
	struct v4l2_flash *v4l2_flash;

	/* brightness cache */
	unsigned int torch_brightness;
	/* flash timeout cache */
	unsigned int flash_timeout;
	/* flash faults that may have occurred */
	u32 flash_faults;
};

struct max77693_led_device {
	/* parent mfd regmap */
	struct regmap *regmap;
	/* platform device data */
	struct platform_device *pdev;
	/* secures access to the device */
	struct mutex lock;

	/* sub led data */
	struct max77693_sub_led sub_leds[2];

	/* maximum torch current values for FLED outputs */
	u32 iout_torch_max[2];
	/* maximum flash current values for FLED outputs */
	u32 iout_flash_max[2];

	/* current flash timeout cache */
	unsigned int current_flash_timeout;
	/* ITORCH register cache */
	u8 torch_iout_reg;
	/* mode of fled outputs */
	unsigned int mode_flags;
	/* recently strobed fled */
	int strobing_sub_led_id;
	/* bitmask of FLED outputs use state (bit 0. - FLED1, bit 1. - FLED2) */
	u8 fled_mask;
	/* FLED modes that can be set */
	u8 allowed_modes;

	/* arrangement of current outputs */
	bool iout_joint;
};

static u8 max77693_led_iout_to_reg(u32 ua)
{
	if (ua < FLASH_IOUT_MIN)
		ua = FLASH_IOUT_MIN;
	return (ua - FLASH_IOUT_MIN) / FLASH_IOUT_STEP;
}

static u8 max77693_flash_timeout_to_reg(u32 us)
{
	return (us - FLASH_TIMEOUT_MIN) / FLASH_TIMEOUT_STEP;
}

static inline struct max77693_sub_led *flcdev_to_sub_led(
					struct led_classdev_flash *fled_cdev)
{
	return container_of(fled_cdev, struct max77693_sub_led, fled_cdev);
}

static inline struct max77693_led_device *sub_led_to_led(
					struct max77693_sub_led *sub_led)
{
	return container_of(sub_led, struct max77693_led_device,
				sub_leds[sub_led->fled_id]);
}

static inline u8 max77693_led_vsys_to_reg(u32 mv)
{
	return ((mv - MAX_FLASH1_VSYS_MIN) / MAX_FLASH1_VSYS_STEP) << 2;
}

static inline u8 max77693_led_vout_to_reg(u32 mv)
{
	return (mv - FLASH_VOUT_MIN) / FLASH_VOUT_STEP + FLASH_VOUT_RMIN;
}

static inline bool max77693_fled_used(struct max77693_led_device *led,
					 int fled_id)
{
	u8 fled_bit = (fled_id == FLED1) ? FLED1_IOUT : FLED2_IOUT;

	return led->fled_mask & fled_bit;
}

static int max77693_set_mode_reg(struct max77693_led_device *led, u8 mode)
{
	struct regmap *rmap = led->regmap;
	int ret, v = 0, i;

	for (i = FLED1; i <= FLED2; ++i) {
		if (mode & MODE_TORCH(i))
			v |= FLASH_EN_ON << TORCH_EN_SHIFT(i);

		if (mode & MODE_FLASH(i)) {
			v |= FLASH_EN_ON << FLASH_EN_SHIFT(i);
		} else if (mode & MODE_FLASH_EXTERNAL