From mboxrd@z Thu Jan 1 00:00:00 1970 From: lee.jones@linaro.org (Lee Jones) Date: Mon, 21 Jan 2013 12:03:49 +0000 Subject: [PATCH 13/24] abx500-chargalg: Add new sysfs interface to get current charge status In-Reply-To: <1358769840-4763-1-git-send-email-lee.jones@linaro.org> References: <1358769840-4763-1-git-send-email-lee.jones@linaro.org> Message-ID: <1358769840-4763-14-git-send-email-lee.jones@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Allow a user to check on AB8500 charging status from debugfs. Signed-off-by: Lee Jones --- drivers/power/ab8500_charger.c | 3 +++ drivers/power/abx500_chargalg.c | 22 +++++++++++++++++++++- 2 files changed, 24 insertions(+), 1 deletion(-) diff --git a/drivers/power/ab8500_charger.c b/drivers/power/ab8500_charger.c index 0483e7c..d834566 100644 --- a/drivers/power/ab8500_charger.c +++ b/drivers/power/ab8500_charger.c @@ -2764,6 +2764,9 @@ static int ab8500_charger_usb_notifier_call(struct notifier_block *nb, enum ab8500_usb_state bm_usb_state; unsigned mA = *((unsigned *)power); + if (!di) + return NOTIFY_DONE; + if (event != USB_EVENT_VBUS) { dev_dbg(di->dev, "not a standard host, returning\n"); return NOTIFY_DONE; diff --git a/drivers/power/abx500_chargalg.c b/drivers/power/abx500_chargalg.c index 7defb3e..694f592 100644 --- a/drivers/power/abx500_chargalg.c +++ b/drivers/power/abx500_chargalg.c @@ -1654,6 +1654,25 @@ static int abx500_chargalg_get_property(struct power_supply *psy, /* Exposure to the sysfs interface */ /** + * ab8500_chargalg_sysfs_show() - sysfs show operations + * @kobj: pointer to the struct kobject + * @attr: pointer to the struct attribute + * @buf: buffer that holds the parameter to send to userspace + * + * Returns a buffer to be displayed in user space + */ +static ssize_t ab8500_chargalg_sysfs_show(struct kobject *kobj, + struct attribute *attr, char *buf) +{ + struct ab8500_chargalg *di = container_of(kobj, + struct ab8500_chargalg, chargalg_kobject); + + return sprintf(buf, "%d\n", + di->susp_status.ac_suspended && + di->susp_status.usb_suspended); +} + +/** * abx500_chargalg_sysfs_charger() - sysfs store operations * @kobj: pointer to the struct kobject * @attr: pointer to the struct attribute @@ -1721,7 +1740,7 @@ static ssize_t abx500_chargalg_sysfs_charger(struct kobject *kobj, static struct attribute abx500_chargalg_en_charger = \ { .name = "chargalg", - .mode = S_IWUSR, + .mode = S_IRUGO | S_IWUSR, }; static struct attribute *abx500_chargalg_chg[] = { @@ -1730,6 +1749,7 @@ static struct attribute *abx500_chargalg_chg[] = { }; static const struct sysfs_ops abx500_chargalg_sysfs_ops = { + .show = ab8500_chargalg_sysfs_show, .store = abx500_chargalg_sysfs_charger, }; -- 1.7.9.5