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>

1 files changed, 21 insertions, 1 deletions

diff --git a/drivers/power/pm2301_charger.c b/drivers/power/pm2301_charger.c
index a95edae925f8..ae647c41c535 100644
--- 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,