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authorAndy Green <andy@openmoko.com>2008-11-21 16:42:32 +0000
committerAndy Green <andy@openmoko.com>2008-11-21 16:42:32 +0000
commit6362dbd5349423f2da412d8e4245c37ec4c8ba5f (patch)
tree760fb857433979ccf5b6b8ef03f91abd234a0db6
parent4a922dc8ab2915b61ff6adfe8e0a01069893b52b (diff)
fix-merge-add-new-file.patch
Signed-off-by: Andy Green <andy@openmoko.com>
-rw-r--r--drivers/power/pcf50633-charger.c301
1 files changed, 301 insertions, 0 deletions
diff --git a/drivers/power/pcf50633-charger.c b/drivers/power/pcf50633-charger.c
new file mode 100644
index 00000000000..24d6a8aa7e5
--- /dev/null
+++ b/drivers/power/pcf50633-charger.c
@@ -0,0 +1,301 @@
+/* Philips PCF50633 Main Battery Charger Driver
+ *
+ * (C) 2006-2008 by Openmoko, Inc.
+ * Author: Balaji Rao <balajirrao@openmoko.org>
+ * All rights reserved.
+ *
+ * Broken down from monstrous PCF50633 driver mainly by
+ * Harald Welte and Andy Green
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <linux/mfd/pcf50633/core.h>
+#include <linux/mfd/pcf50633/mbc.h>
+
+void pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma)
+{
+ int ret;
+ u8 bits;
+
+ if (ma >= 1000)
+ bits = PCF50633_MBCC7_USB_1000mA;
+ else if (ma >= 500)
+ bits = PCF50633_MBCC7_USB_500mA;
+ else if (ma >= 100)
+ bits = PCF50633_MBCC7_USB_100mA;
+ else
+ bits = PCF50633_MBCC7_USB_SUSPEND;
+
+ ret = pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC7,
+ PCF50633_MBCC7_USB_MASK, bits);
+ if (ret)
+ dev_err(pcf->dev, "error setting usb curlim to %d mA\n", ma);
+ else
+ dev_info(pcf->dev, "usb curlim to %d mA\n", ma);
+
+ power_supply_changed(&pcf->mbc.usb);
+}
+EXPORT_SYMBOL(pcf50633_mbc_usb_curlim_set);
+
+static const char *chgmode_names[] = {
+ [PCF50633_MBCS2_MBC_PLAY] = "play-only",
+ [PCF50633_MBCS2_MBC_USB_PRE] = "pre",
+ [PCF50633_MBCS2_MBC_ADP_PRE] = "pre",
+ [PCF50633_MBCS2_MBC_USB_PRE_WAIT] = "pre-wait",
+ [PCF50633_MBCS2_MBC_ADP_PRE_WAIT] = "pre-wait",
+ [PCF50633_MBCS2_MBC_USB_FAST] = "fast",
+ [PCF50633_MBCS2_MBC_ADP_FAST] = "fast",
+ [PCF50633_MBCS2_MBC_USB_FAST_WAIT] = "fast-wait",
+ [PCF50633_MBCS2_MBC_ADP_FAST_WAIT] = "fast-wait",
+ [PCF50633_MBCS2_MBC_BAT_FULL] = "bat-full",
+};
+
+static ssize_t show_chgmode(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct pcf50633 *pcf = dev_get_drvdata(dev);
+
+ u8 mbcs2 = pcf50633_reg_read(pcf, PCF50633_REG_MBCS2);
+ u8 chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
+
+ return sprintf(buf, "%s %d\n", chgmode_names[chgmod], chgmod);
+}
+static DEVICE_ATTR(chgmode, S_IRUGO | S_IWUSR, show_chgmode, NULL);
+
+static ssize_t show_usblim(struct device *dev, struct device_attribute *attr,
+ char *buf)
+{
+ struct pcf50633 *pcf = dev_get_drvdata(dev);
+ u8 usblim = pcf50633_reg_read(pcf, PCF50633_REG_MBCC7) &
+ PCF50633_MBCC7_USB_MASK;
+ unsigned int ma;
+
+ if (usblim == PCF50633_MBCC7_USB_1000mA)
+ ma = 1000;
+ else if (usblim == PCF50633_MBCC7_USB_500mA)
+ ma = 500;
+ else if (usblim == PCF50633_MBCC7_USB_100mA)
+ ma = 100;
+ else
+ ma = 0;
+
+ return sprintf(buf, "%u\n", ma);
+}
+static DEVICE_ATTR(usb_curlim, S_IRUGO | S_IWUSR, show_usblim, NULL);
+
+static ssize_t force_usb_limit_dangerous(struct device *dev,
+ struct device_attribute *attr, const char *buf, size_t count)
+{
+ struct pcf50633 *pcf = dev_get_drvdata(dev);
+ unsigned long ma;
+
+ strict_strtoul(buf, 10, &ma);
+
+ pcf50633_mbc_usb_curlim_set(pcf, ma);
+
+ return count;
+}
+
+static DEVICE_ATTR(force_usb_limit_dangerous, 0600,
+ NULL, force_usb_limit_dangerous);
+
+static struct attribute *mbc_sysfs_entries[] = {
+ &dev_attr_chgmode.attr,
+ &dev_attr_usb_curlim.attr,
+ &dev_attr_force_usb_limit_dangerous.attr,
+ NULL,
+};
+
+static struct attribute_group mbc_attr_group = {
+ .name = NULL, /* put in device directory */
+ .attrs = mbc_sysfs_entries,
+};
+
+static void pcf50633_mbc_irq_handler(struct pcf50633 *pcf, int irq, void *data)
+{
+ struct pcf50633_mbc *mbc;
+
+ mbc = &pcf->mbc;
+
+ /* USB */
+ if (irq == PCF50633_IRQ_USBINS)
+ mbc->usb_online = 1;
+ else if (irq == PCF50633_IRQ_USBREM) {
+ mbc->usb_online = 0;
+ mbc->usb_active = 0;
+ pcf50633_mbc_usb_curlim_set(pcf, 0);
+ }
+
+ /* Adapter */
+ if (irq == PCF50633_IRQ_ADPINS) {
+ pcf->mbc.adapter_online = 1;
+ pcf->mbc.adapter_active = 1;
+ } else if (irq == PCF50633_IRQ_ADPREM) {
+ mbc->adapter_online = 0;
+ mbc->adapter_active = 0;
+ }
+
+ if (irq == PCF50633_IRQ_BATFULL) {
+ mbc->usb_active = 0;
+ mbc->adapter_active = 0;
+ }
+
+ power_supply_changed(&mbc->usb);
+ power_supply_changed(&mbc->adapter);
+
+ if (pcf->pdata->mbc_event_callback)
+ pcf->pdata->mbc_event_callback(pcf, irq);
+}
+
+static int adapter_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret = 0;
+ struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = mbc->adapter_online;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static int usb_get_property(struct power_supply *psy,
+ enum power_supply_property psp,
+ union power_supply_propval *val)
+{
+ int ret = 0;
+ struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb);
+
+ switch (psp) {
+ case POWER_SUPPLY_PROP_ONLINE:
+ val->intval = mbc->usb_online;
+ break;
+ default:
+ ret = -EINVAL;
+ break;
+ }
+ return ret;
+}
+
+static enum power_supply_property power_props[] = {
+ POWER_SUPPLY_PROP_ONLINE,
+};
+
+int __init pcf50633_mbc_probe(struct platform_device *pdev)
+{
+ struct pcf50633 *pcf;
+ struct pcf50633_mbc *mbc;
+ int ret;
+
+ pcf = platform_get_drvdata(pdev);
+ mbc = &pcf->mbc;
+
+ /* Set up IRQ handlers */
+ pcf->irq_handler[PCF50633_IRQ_ADPINS].handler =
+ pcf50633_mbc_irq_handler;
+ pcf->irq_handler[PCF50633_IRQ_ADPREM].handler =
+ pcf50633_mbc_irq_handler;
+ pcf->irq_handler[PCF50633_IRQ_USBINS].handler =
+ pcf50633_mbc_irq_handler;
+ pcf->irq_handler[PCF50633_IRQ_USBREM].handler =
+ pcf50633_mbc_irq_handler;
+ pcf->irq_handler[PCF50633_IRQ_BATFULL].handler =
+ pcf50633_mbc_irq_handler;
+ pcf->irq_handler[PCF50633_IRQ_CHGHALT].handler =
+ pcf50633_mbc_irq_handler;
+ pcf->irq_handler[PCF50633_IRQ_THLIMON].handler =
+ pcf50633_mbc_irq_handler;
+ pcf->irq_handler[PCF50633_IRQ_THLIMOFF].handler =
+ pcf50633_mbc_irq_handler;
+ pcf->irq_handler[PCF50633_IRQ_USBLIMON].handler =
+ pcf50633_mbc_irq_handler;
+ pcf->irq_handler[PCF50633_IRQ_USBLIMOFF].handler =
+ pcf50633_mbc_irq_handler;
+ pcf->irq_handler[PCF50633_IRQ_LOWSYS].handler =
+ pcf50633_mbc_irq_handler;
+ pcf->irq_handler[PCF50633_IRQ_LOWBAT].handler =
+ pcf50633_mbc_irq_handler;
+
+ /* Create power supplies */
+
+ mbc->adapter.name = "adapter";
+ mbc->adapter.type = POWER_SUPPLY_TYPE_MAINS;
+ mbc->adapter.properties = power_props;
+ mbc->adapter.num_properties = ARRAY_SIZE(power_props);
+ mbc->adapter.get_property = &adapter_get_property;
+ mbc->adapter.supplied_to = pcf->pdata->batteries;
+ mbc->adapter.num_supplicants = pcf->pdata->num_batteries;
+
+ mbc->usb.name = "usb";
+ mbc->usb.type = POWER_SUPPLY_TYPE_USB;
+ mbc->usb.properties = power_props;
+ mbc->usb.num_properties = ARRAY_SIZE(power_props);
+ mbc->usb.get_property = usb_get_property;
+ mbc->usb.supplied_to = pcf->pdata->batteries;
+ mbc->usb.num_supplicants = pcf->pdata->num_batteries;
+
+ ret = power_supply_register(&pdev->dev, &mbc->adapter);
+ if (ret)
+ dev_err(pcf->dev, "failed to register adapter\n");
+
+ ret = power_supply_register(&pdev->dev, &mbc->usb);
+ if (ret)
+ dev_err(pcf->dev, "failed to register usb\n");
+
+ return sysfs_create_group(&pdev->dev.kobj, &mbc_attr_group);
+}
+
+static int __devexit pcf50633_mbc_remove(struct platform_device *pdev)
+{
+ struct pcf50633 *pcf;
+
+ pcf = platform_get_drvdata(pdev);
+
+ return 0;
+}
+
+struct platform_driver pcf50633_mbc_driver = {
+ .driver = {
+ .name = "pcf50633-mbc",
+ },
+ .probe = pcf50633_mbc_probe,
+ .remove = __devexit_p(pcf50633_mbc_remove),
+};
+
+static int __init pcf50633_mbc_init(void)
+{
+ return platform_driver_register(&pcf50633_mbc_driver);
+}
+module_init(pcf50633_mbc_init);
+
+static void __exit pcf50633_mbc_exit(void)
+{
+ platform_driver_unregister(&pcf50633_mbc_driver);
+}
+module_exit(pcf50633_mbc_exit);
+
+MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>");
+MODULE_DESCRIPTION("PCF50633 mbc driver");
+MODULE_LICENSE("GPL");
+MODULE_ALIAS("platform:pcf50633-mbc");
+