mfd: Print ab8500 switch off cause

Instead of just printing the register value, also output some
description of the value.

Signed-off-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Reviewed-by: Mattias Wallin <mattias.wallin@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>

diff --git a/drivers/mfd/ab8500-core.c b/drivers/mfd/ab8500-core.c
index 3eb1587..e580c5d 100644 (file)
--- a/drivers/mfd/ab8500-core.c
+++ b/drivers/mfd/ab8500-core.c
@@ -1232,6 +1232,15 @@ static struct attribute_group ab9540_attr_group = {
 
 static int __devinit ab8500_probe(struct platform_device *pdev)
 {
+       static char *switch_off_status[] = {
+               "Swoff bit programming",
+               "Thermal protection activation",
+               "Vbat lower then BattOk falling threshold",
+               "Watchdog expired",
+               "Non presence of 32kHz clock",
+               "Battery level lower than power on reset threshold",
+               "Power on key 1 pressed longer than 10 seconds",
+               "DB8500 thermal shutdown"};
        struct ab8500_platform_data *plat = dev_get_platdata(&pdev->dev);
        const struct platform_device_id *platid = platform_get_device_id(pdev);
        enum ab8500_version version = AB8500_VERSION_UNDEFINED;
@@ -1327,7 +1336,20 @@ static int __devinit ab8500_probe(struct platform_device *pdev)
                AB8500_SWITCH_OFF_STATUS, &value);
        if (ret < 0)
                return ret;
-       dev_info(ab8500->dev, "switch off status: %#x\n", value);
+       dev_info(ab8500->dev, "switch off cause(s) (%#x): ", value);
+
+       if (value) {
+               for (i = 0; i < ARRAY_SIZE(switch_off_status); i++) {
+                       if (value & 1)
+                               printk(KERN_CONT " \"%s\"",
+                                      switch_off_status[i]);
+                       value = value >> 1;
+
+               }
+               printk(KERN_CONT "\n");
+       } else {
+               printk(KERN_CONT " None\n");
+       }
 
        if (plat && plat->init)
                plat->init(ab8500);