linux-kernel - [PATCH 14/40] pm2301-charger: Die temp thermal protection

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Message-Id: <1360932310-30065-15-git-send-email-lee.jones@linaro.org>
Date:	Fri, 15 Feb 2013 12:44:44 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Cc:	arnd@...db.de, linus.walleij@...ricsson.com,
	cbouatmailru@...il.com, sameo@...ux.intel.com,
	Rupesh Kumar <rupesh.kumar@...ricsson.com>,
	Lee Jones <lee.jones@...aro.org>
Subject: [PATCH 14/40] pm2301-charger: Die temp thermal protection

From: Rupesh Kumar <rupesh.kumar@...ricsson.com>

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

Signed-off-by: Rupesh Kumar <rupesh.kumar@...ricsson.com>
Signed-off-by: Lee Jones <lee.jones@...aro.org>
Reviewed-by: Hakan BERG <hakan.berg@...ricsson.com>
Reviewed-by: Philippe LANGLAIS <philippe.langlais@...ricsson.com>
---
 drivers/power/pm2301_charger.c |   22 +++++++++++++++++++++-
 1 file changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/power/pm2301_charger.c b/drivers/power/pm2301_charger.c
index 4cb8f7f..ec51026 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,
-- 
1.7.10.4

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