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pm_test:clk_volt.c,fix info help

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2013-07-31 09:26:53 +08:00
parent eb98f1e6f6
commit 1bf80d5c3f
1 changed files with 41 additions and 11 deletions
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52
arch/arm/plat-rk/rk_pm_tests/clk_volt.c
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@@ -27,32 +27,62 @@ ssize_t clk_volt_show(struct kobject *kobj, struct kobj_attribute *attr,
char *buf)
{
char *str = buf;
str += sprintf(str, "[regulaotr_name] [voltage(uV)]\n");
str += sprintf(str, "usage:\n");
str += sprintf(str, "get voltage:get [regulaotr_name]\n");
str += sprintf(str, "set voltage:set [regulaotr_name] [voltage(uV)]\n");
str += sprintf(str, "set suspend voltage:set [regulaotr_name] [voltage(uV)+1]\n");
if (str != buf)
*(str - 1) = '\n';
return (str - buf);
}
#define SET_SUSPEND_VOLT_FLAG (1<<0)
ssize_t clk_volt_store(struct kobject *kobj, struct kobj_attribute *attr,
const char *buf, size_t n)
{
char regulator_name[20];
char cmd[20], regulator_name[20];
unsigned int volt;
int ret = 0;
int need_put_regulator=0;
struct regulator *regulator;
sscanf(buf, "%s %u", regulator_name, &volt);
sscanf(buf, "%s %s %u", cmd, regulator_name, &volt);
regulator = dvfs_get_regulator(regulator_name);
if (IS_ERR(regulator)) {
PM_ERR("%s get dvfs_regulator %s error\n", __func__, regulator_name);
return n;
if (IS_ERR_OR_NULL(regulator)) {
regulator = regulator_get(NULL, regulator_name);
if (IS_ERR(regulator)){
PM_ERR("%s get dvfs_regulator %s error\n", __func__, regulator_name);
return n;
}
need_put_regulator = 1;
}
if (0 == strncmp(cmd, "set", strlen("set"))){
if (volt & SET_SUSPEND_VOLT_FLAG){
volt &= ~SET_SUSPEND_VOLT_FLAG;
ret = regulator_set_suspend_voltage(regulator, volt);
if (!ret)
printk("set %s suspend volt to %uuV ok\n", regulator_name, volt);
else
printk("regulator_set_suspend_voltage err:%d\n", ret);
}else{
ret = regulator_set_voltage(regulator, volt, volt);
if (!ret)
printk("set %s volt to %uuV ok\n", regulator_name, regulator_get_voltage(regulator));
else
printk("regulator_set_voltage err:%d\n", ret);
}
}
if (0 == strncmp(cmd, "get", strlen("get"))){
printk("%s:%duV\n", regulator_name, regulator_get_voltage(regulator));
}
ret = regulator_set_voltage(regulator, volt, volt);
PM_DBG("ret = %d\n", ret);
if (need_put_regulator)
regulator_put(regulator);
// if (0 == strncmp(cmd, "enable", strlen("enable"))) {
return n;