forked from luck/tmp_suning_uos_patched
ca26475bf0
The commit9bf448c66d("ARM: pxa: use generic gpio operation instead of gpio register") from Oct 17, 2011, leads to the following static checker warning: arch/arm/mach-pxa/spitz_pm.c:172 spitz_charger_wakeup() warn: double left shift '!gpio_get_value(SPITZ_GPIO_KEY_INT) << (1 << ((SPITZ_GPIO_KEY_INT) & 31))' As Dan reported, the value is shifted three times : - once by gpio_get_value(), which returns either 0 or BIT(gpio) - once by the shift operation '<<' - a last time by GPIO_bit(gpio) which is BIT(gpio) Therefore the calculation lead to a chained or operator of : - (1 << gpio) << (1 << gpio) = (2^gpio)^gpio = 2 ^ (gpio * gpio) It is be sheer luck the former statement works, only because each gpio used is strictly smaller than 6, and therefore 2^(gpio^2) never overflows a 32 bits value, and because it is used as a boolean value to check a gpio activation. As the xxx_charger_wakeup() functions are used as a true/false detection mechanism, take that opportunity to change their prototypes from integer return value to boolean one. Fixes:9bf448c66d("ARM: pxa: use generic gpio operation instead of gpio register") Reported-by: Dan Carpenter <dan.carpenter@oracle.com> Cc: Joe Perches <joe@perches.com> Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr>
114 lines
3.1 KiB
C
114 lines
3.1 KiB
C
/*
|
|
* SharpSL Battery/PM Driver
|
|
*
|
|
* Copyright (c) 2004-2005 Richard Purdie
|
|
*
|
|
* 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.
|
|
*
|
|
*/
|
|
#ifndef _MACH_SHARPSL_PM
|
|
#define _MACH_SHARPSL_PM
|
|
|
|
struct sharpsl_charger_machinfo {
|
|
void (*init)(void);
|
|
void (*exit)(void);
|
|
int gpio_acin;
|
|
int gpio_batfull;
|
|
int batfull_irq;
|
|
int gpio_batlock;
|
|
int gpio_fatal;
|
|
void (*discharge)(int);
|
|
void (*discharge1)(int);
|
|
void (*charge)(int);
|
|
void (*measure_temp)(int);
|
|
void (*presuspend)(void);
|
|
void (*postsuspend)(void);
|
|
void (*earlyresume)(void);
|
|
unsigned long (*read_devdata)(int);
|
|
#define SHARPSL_BATT_VOLT 1
|
|
#define SHARPSL_BATT_TEMP 2
|
|
#define SHARPSL_ACIN_VOLT 3
|
|
#define SHARPSL_STATUS_ACIN 4
|
|
#define SHARPSL_STATUS_LOCK 5
|
|
#define SHARPSL_STATUS_CHRGFULL 6
|
|
#define SHARPSL_STATUS_FATAL 7
|
|
bool (*charger_wakeup)(void);
|
|
int (*should_wakeup)(unsigned int resume_on_alarm);
|
|
void (*backlight_limit)(int);
|
|
int (*backlight_get_status) (void);
|
|
int charge_on_volt;
|
|
int charge_on_temp;
|
|
int charge_acin_high;
|
|
int charge_acin_low;
|
|
int fatal_acin_volt;
|
|
int fatal_noacin_volt;
|
|
int bat_levels;
|
|
struct battery_thresh *bat_levels_noac;
|
|
struct battery_thresh *bat_levels_acin;
|
|
struct battery_thresh *bat_levels_noac_bl;
|
|
struct battery_thresh *bat_levels_acin_bl;
|
|
int status_high_acin;
|
|
int status_low_acin;
|
|
int status_high_noac;
|
|
int status_low_noac;
|
|
};
|
|
|
|
struct battery_thresh {
|
|
int voltage;
|
|
int percentage;
|
|
};
|
|
|
|
struct battery_stat {
|
|
int ac_status; /* APM AC Present/Not Present */
|
|
int mainbat_status; /* APM Main Battery Status */
|
|
int mainbat_percent; /* Main Battery Percentage Charge */
|
|
int mainbat_voltage; /* Main Battery Voltage */
|
|
};
|
|
|
|
struct sharpsl_pm_status {
|
|
struct device *dev;
|
|
struct timer_list ac_timer;
|
|
struct timer_list chrg_full_timer;
|
|
|
|
int charge_mode;
|
|
#define CHRG_ERROR (-1)
|
|
#define CHRG_OFF (0)
|
|
#define CHRG_ON (1)
|
|
#define CHRG_DONE (2)
|
|
|
|
unsigned int flags;
|
|
#define SHARPSL_SUSPENDED (1 << 0) /* Device is Suspended */
|
|
#define SHARPSL_ALARM_ACTIVE (1 << 1) /* Alarm is for charging event (not user) */
|
|
#define SHARPSL_BL_LIMIT (1 << 2) /* Backlight Intensity Limited */
|
|
#define SHARPSL_APM_QUEUED (1 << 3) /* APM Event Queued */
|
|
#define SHARPSL_DO_OFFLINE_CHRG (1 << 4) /* Trigger the offline charger */
|
|
|
|
int full_count;
|
|
unsigned long charge_start_time;
|
|
struct sharpsl_charger_machinfo *machinfo;
|
|
struct battery_stat battstat;
|
|
};
|
|
|
|
extern struct sharpsl_pm_status sharpsl_pm;
|
|
|
|
extern struct battery_thresh sharpsl_battery_levels_acin[];
|
|
extern struct battery_thresh sharpsl_battery_levels_noac[];
|
|
|
|
#define SHARPSL_LED_ERROR 2
|
|
#define SHARPSL_LED_ON 1
|
|
#define SHARPSL_LED_OFF 0
|
|
|
|
void sharpsl_battery_kick(void);
|
|
void sharpsl_pm_led(int val);
|
|
|
|
/* MAX1111 Channel Definitions */
|
|
#define MAX1111_BATT_VOLT 4u
|
|
#define MAX1111_BATT_TEMP 2u
|
|
#define MAX1111_ACIN_VOLT 6u
|
|
int sharpsl_pm_pxa_read_max1111(int channel);
|
|
|
|
void corgi_lcd_limit_intensity(int limit);
|
|
#endif
|