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Merge "ODROID-XU4 : s2mps11 manual reset function enable for hardware watchdog." into odroidxu4-4.9.y

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This commit is contained in:
Mauro Ribeiro
2017-04-06 21:35:53 +09:00
committed by Gerrit Code Review
parent 66a3c19c9e 59efc896cc
commit 2be9d240d1
1 changed files with 62 additions and 0 deletions
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62
drivers/regulator/s2mps11.c Normal file → Executable file
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@@ -1142,6 +1142,64 @@ static int s2mps11_pmic_ethonoff(struct platform_device *pdev, bool onoff)
return ret;
}
/* for External Watchdog Hardware module */
#include <linux/kernel.h>
unsigned int external_watchdog = false;
unsigned int debounce_time = 3;
static int __init external_watchdog_enable(char *s)
{
if (!strcmp(s, "true")) {
external_watchdog = true;
pr_emerg("s2mps11 : external watchdog enable!\n");
}
return 0;
}
__setup("external_watchdog=", external_watchdog_enable);
static int __init external_watchdog_debounce(char *s)
{
unsigned long value;
if (kstrtoul(s, 10, &value) != 0)
value = 3;
debounce_time = value;
return 0;
}
__setup("external_watchdog_debounce=", external_watchdog_debounce);
/* pmic control register setup for external watch dog board */
static int s2mps11_pmic_watchdog_setup(struct sec_pmic_dev *iodev)
{
unsigned char rdata = 0;
/* PWRHOLD ctrl = 0*/
rdata = 0x0;
/* Manual reset enable */
rdata |= 0x08;
/* Manual reset 3 sec(default) */
if (debounce_time > 2 && debounce_time < 9)
rdata |= (debounce_time - 1);
else if (debounce_time > 8 && debounce_time < 11)
rdata |= (debounce_time - 9);
else
rdata |= 2;
if(regmap_update_bits(iodev->regmap_pmic, S2MPS11_REG_CTRL1,
0xFF, rdata))
pr_err("%s : S2MPS11_REG_CTRL1(w) fail!\n", __func__);
else {
pr_emerg("%s : external watchdog debounce time = %d sec\n",
__func__, debounce_time);
pr_emerg("%s : S2MPS11_REG_CTRL1(w:0x%02X) success!\n",
__func__, rdata);
}
return 0;
}
static int s2mps11_pmic_probe(struct platform_device *pdev)
{
struct sec_pmic_dev *iodev = dev_get_drvdata(pdev->dev.parent);
@@ -1269,6 +1327,10 @@ common_reg:
out:
kfree(rdata);
/* for Exterenal Watchdog board enable */
if (external_watchdog)
s2mps11_pmic_watchdog_setup(iodev);
return ret;
}