pm2301-charger: Die temp thermal protection

This patch adds support for die temperature thermal protection
in pm2301 driver.

Signed-off-by: Rupesh Kumar <rupesh.kumar@stericsson.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Reviewed-by: Hakan BERG <hakan.berg@stericsson.com>
Reviewed-by: Philippe LANGLAIS <philippe.langlais@stericsson.com>

diff --git a/drivers/power/pm2301_charger.c b/drivers/power/pm2301_charger.c
index a95edae..ae647c4 100644 (file)
--- a/drivers/power/pm2301_charger.c
+++ b/drivers/power/pm2301_charger.c
@@ -876,7 +876,27 @@ static void pm2xxx_charger_check_hw_failure_work(struct work_struct *work)
 static void pm2xxx_charger_check_main_thermal_prot_work(
        struct work_struct *work)
 {
-};
+       int ret;
+       u8 val;
+
+       struct pm2xxx_charger *pm2 = container_of(work, struct pm2xxx_charger,
+                                       check_main_thermal_prot_work);
+
+       /* Check if die temp warning is still active */
+       ret = pm2xxx_reg_read(pm2, PM2XXX_SRCE_REG_INT5, &val);
+       if (ret < 0) {
+               dev_err(pm2->dev, "%s pm2xxx read failed\n", __func__);
+               return;
+       }
+       if (val & (PM2XXX_INT5_S_ITTHERMALWARNINGRISE
+                       | PM2XXX_INT5_S_ITTHERMALSHUTDOWNRISE))
+               pm2->flags.main_thermal_prot = true;
+       else if (val & (PM2XXX_INT5_S_ITTHERMALWARNINGFALL
+                               | PM2XXX_INT5_S_ITTHERMALSHUTDOWNFALL))
+               pm2->flags.main_thermal_prot = false;
+
+       power_supply_changed(&pm2->ac_chg.psy);
+}
 
 static struct pm2xxx_interrupts pm2xxx_int = {
        .handler[0] = pm2_int_reg0,