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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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5a0e3ad6af
percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
492 lines
13 KiB
C
492 lines
13 KiB
C
/* NXP PCF50633 Main Battery Charger Driver
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*
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* (C) 2006-2008 by Openmoko, Inc.
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* Author: Balaji Rao <balajirrao@openmoko.org>
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* All rights reserved.
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*
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* Broken down from monstrous PCF50633 driver mainly by
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* Harald Welte, Andy Green and Werner Almesberger
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the
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* Free Software Foundation; either version 2 of the License, or (at your
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* option) any later version.
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*
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*/
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/types.h>
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#include <linux/device.h>
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#include <linux/sysfs.h>
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#include <linux/platform_device.h>
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#include <linux/power_supply.h>
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#include <linux/mfd/pcf50633/core.h>
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#include <linux/mfd/pcf50633/mbc.h>
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struct pcf50633_mbc {
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struct pcf50633 *pcf;
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int adapter_online;
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int usb_online;
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struct power_supply usb;
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struct power_supply adapter;
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struct power_supply ac;
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};
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int pcf50633_mbc_usb_curlim_set(struct pcf50633 *pcf, int ma)
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{
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struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
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int ret = 0;
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u8 bits;
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int charging_start = 1;
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u8 mbcs2, chgmod;
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unsigned int mbcc5;
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if (ma >= 1000) {
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bits = PCF50633_MBCC7_USB_1000mA;
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ma = 1000;
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} else if (ma >= 500) {
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bits = PCF50633_MBCC7_USB_500mA;
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ma = 500;
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} else if (ma >= 100) {
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bits = PCF50633_MBCC7_USB_100mA;
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ma = 100;
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} else {
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bits = PCF50633_MBCC7_USB_SUSPEND;
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charging_start = 0;
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ma = 0;
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}
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ret = pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC7,
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PCF50633_MBCC7_USB_MASK, bits);
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if (ret)
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dev_err(pcf->dev, "error setting usb curlim to %d mA\n", ma);
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else
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dev_info(pcf->dev, "usb curlim to %d mA\n", ma);
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/*
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* We limit the charging current to be the USB current limit.
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* The reason is that on pcf50633, when it enters PMU Standby mode,
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* which it does when the device goes "off", the USB current limit
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* reverts to the variant default. In at least one common case, that
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* default is 500mA. By setting the charging current to be the same
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* as the USB limit we set here before PMU standby, we enforce it only
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* using the correct amount of current even when the USB current limit
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* gets reset to the wrong thing
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*/
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if (mbc->pcf->pdata->charger_reference_current_ma) {
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mbcc5 = (ma << 8) / mbc->pcf->pdata->charger_reference_current_ma;
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if (mbcc5 > 255)
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mbcc5 = 255;
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pcf50633_reg_write(mbc->pcf, PCF50633_REG_MBCC5, mbcc5);
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}
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mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
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chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
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/* If chgmod == BATFULL, setting chgena has no effect.
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* Datasheet says we need to set resume instead but when autoresume is
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* used resume doesn't work. Clear and set chgena instead.
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*/
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if (chgmod != PCF50633_MBCS2_MBC_BAT_FULL)
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pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
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PCF50633_MBCC1_CHGENA, PCF50633_MBCC1_CHGENA);
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else {
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pcf50633_reg_clear_bits(pcf, PCF50633_REG_MBCC1,
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PCF50633_MBCC1_CHGENA);
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pcf50633_reg_set_bit_mask(pcf, PCF50633_REG_MBCC1,
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PCF50633_MBCC1_CHGENA, PCF50633_MBCC1_CHGENA);
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}
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power_supply_changed(&mbc->usb);
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return ret;
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}
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EXPORT_SYMBOL_GPL(pcf50633_mbc_usb_curlim_set);
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int pcf50633_mbc_get_status(struct pcf50633 *pcf)
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{
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struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
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int status = 0;
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u8 chgmod;
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if (!mbc)
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return 0;
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chgmod = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2)
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& PCF50633_MBCS2_MBC_MASK;
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if (mbc->usb_online)
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status |= PCF50633_MBC_USB_ONLINE;
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if (chgmod == PCF50633_MBCS2_MBC_USB_PRE ||
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chgmod == PCF50633_MBCS2_MBC_USB_PRE_WAIT ||
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chgmod == PCF50633_MBCS2_MBC_USB_FAST ||
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chgmod == PCF50633_MBCS2_MBC_USB_FAST_WAIT)
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status |= PCF50633_MBC_USB_ACTIVE;
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if (mbc->adapter_online)
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status |= PCF50633_MBC_ADAPTER_ONLINE;
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if (chgmod == PCF50633_MBCS2_MBC_ADP_PRE ||
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chgmod == PCF50633_MBCS2_MBC_ADP_PRE_WAIT ||
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chgmod == PCF50633_MBCS2_MBC_ADP_FAST ||
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chgmod == PCF50633_MBCS2_MBC_ADP_FAST_WAIT)
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status |= PCF50633_MBC_ADAPTER_ACTIVE;
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return status;
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}
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EXPORT_SYMBOL_GPL(pcf50633_mbc_get_status);
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int pcf50633_mbc_get_usb_online_status(struct pcf50633 *pcf)
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{
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struct pcf50633_mbc *mbc = platform_get_drvdata(pcf->mbc_pdev);
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if (!mbc)
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return 0;
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return mbc->usb_online;
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}
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EXPORT_SYMBOL_GPL(pcf50633_mbc_get_usb_online_status);
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static ssize_t
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show_chgmode(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
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u8 mbcs2 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS2);
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u8 chgmod = (mbcs2 & PCF50633_MBCS2_MBC_MASK);
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return sprintf(buf, "%d\n", chgmod);
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}
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static DEVICE_ATTR(chgmode, S_IRUGO, show_chgmode, NULL);
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static ssize_t
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show_usblim(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
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u8 usblim = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC7) &
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PCF50633_MBCC7_USB_MASK;
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unsigned int ma;
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if (usblim == PCF50633_MBCC7_USB_1000mA)
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ma = 1000;
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else if (usblim == PCF50633_MBCC7_USB_500mA)
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ma = 500;
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else if (usblim == PCF50633_MBCC7_USB_100mA)
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ma = 100;
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else
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ma = 0;
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return sprintf(buf, "%u\n", ma);
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}
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static ssize_t set_usblim(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
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unsigned long ma;
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int ret;
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ret = strict_strtoul(buf, 10, &ma);
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if (ret)
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return -EINVAL;
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pcf50633_mbc_usb_curlim_set(mbc->pcf, ma);
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return count;
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}
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static DEVICE_ATTR(usb_curlim, S_IRUGO | S_IWUSR, show_usblim, set_usblim);
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static ssize_t
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show_chglim(struct device *dev, struct device_attribute *attr, char *buf)
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{
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struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
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u8 mbcc5 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC5);
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unsigned int ma;
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if (!mbc->pcf->pdata->charger_reference_current_ma)
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return -ENODEV;
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ma = (mbc->pcf->pdata->charger_reference_current_ma * mbcc5) >> 8;
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return sprintf(buf, "%u\n", ma);
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}
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static ssize_t set_chglim(struct device *dev,
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struct device_attribute *attr, const char *buf, size_t count)
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{
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struct pcf50633_mbc *mbc = dev_get_drvdata(dev);
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unsigned long ma;
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unsigned int mbcc5;
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int ret;
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if (!mbc->pcf->pdata->charger_reference_current_ma)
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return -ENODEV;
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ret = strict_strtoul(buf, 10, &ma);
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if (ret)
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return -EINVAL;
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mbcc5 = (ma << 8) / mbc->pcf->pdata->charger_reference_current_ma;
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if (mbcc5 > 255)
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mbcc5 = 255;
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pcf50633_reg_write(mbc->pcf, PCF50633_REG_MBCC5, mbcc5);
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return count;
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}
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/*
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* This attribute allows to change MBC charging limit on the fly
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* independently of usb current limit. It also gets set automatically every
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* time usb current limit is changed.
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*/
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static DEVICE_ATTR(chg_curlim, S_IRUGO | S_IWUSR, show_chglim, set_chglim);
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static struct attribute *pcf50633_mbc_sysfs_entries[] = {
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&dev_attr_chgmode.attr,
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&dev_attr_usb_curlim.attr,
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&dev_attr_chg_curlim.attr,
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NULL,
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};
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static struct attribute_group mbc_attr_group = {
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.name = NULL, /* put in device directory */
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.attrs = pcf50633_mbc_sysfs_entries,
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};
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static void
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pcf50633_mbc_irq_handler(int irq, void *data)
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{
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struct pcf50633_mbc *mbc = data;
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/* USB */
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if (irq == PCF50633_IRQ_USBINS) {
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mbc->usb_online = 1;
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} else if (irq == PCF50633_IRQ_USBREM) {
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mbc->usb_online = 0;
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pcf50633_mbc_usb_curlim_set(mbc->pcf, 0);
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}
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/* Adapter */
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if (irq == PCF50633_IRQ_ADPINS)
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mbc->adapter_online = 1;
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else if (irq == PCF50633_IRQ_ADPREM)
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mbc->adapter_online = 0;
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power_supply_changed(&mbc->ac);
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power_supply_changed(&mbc->usb);
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power_supply_changed(&mbc->adapter);
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if (mbc->pcf->pdata->mbc_event_callback)
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mbc->pcf->pdata->mbc_event_callback(mbc->pcf, irq);
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}
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static int adapter_get_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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struct pcf50633_mbc *mbc = container_of(psy,
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struct pcf50633_mbc, adapter);
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int ret = 0;
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switch (psp) {
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case POWER_SUPPLY_PROP_ONLINE:
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val->intval = mbc->adapter_online;
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break;
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default:
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ret = -EINVAL;
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break;
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}
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return ret;
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}
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static int usb_get_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, usb);
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int ret = 0;
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u8 usblim = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC7) &
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PCF50633_MBCC7_USB_MASK;
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switch (psp) {
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case POWER_SUPPLY_PROP_ONLINE:
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val->intval = mbc->usb_online &&
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(usblim <= PCF50633_MBCC7_USB_500mA);
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break;
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default:
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ret = -EINVAL;
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break;
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}
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return ret;
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}
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static int ac_get_property(struct power_supply *psy,
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enum power_supply_property psp,
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union power_supply_propval *val)
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{
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struct pcf50633_mbc *mbc = container_of(psy, struct pcf50633_mbc, ac);
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int ret = 0;
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u8 usblim = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCC7) &
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PCF50633_MBCC7_USB_MASK;
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switch (psp) {
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case POWER_SUPPLY_PROP_ONLINE:
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val->intval = mbc->usb_online &&
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(usblim == PCF50633_MBCC7_USB_1000mA);
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break;
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default:
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ret = -EINVAL;
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break;
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}
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return ret;
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}
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static enum power_supply_property power_props[] = {
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POWER_SUPPLY_PROP_ONLINE,
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};
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static const u8 mbc_irq_handlers[] = {
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PCF50633_IRQ_ADPINS,
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PCF50633_IRQ_ADPREM,
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PCF50633_IRQ_USBINS,
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PCF50633_IRQ_USBREM,
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PCF50633_IRQ_BATFULL,
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PCF50633_IRQ_CHGHALT,
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PCF50633_IRQ_THLIMON,
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PCF50633_IRQ_THLIMOFF,
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PCF50633_IRQ_USBLIMON,
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PCF50633_IRQ_USBLIMOFF,
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PCF50633_IRQ_LOWSYS,
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PCF50633_IRQ_LOWBAT,
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};
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static int __devinit pcf50633_mbc_probe(struct platform_device *pdev)
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{
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struct pcf50633_mbc *mbc;
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int ret;
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int i;
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u8 mbcs1;
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mbc = kzalloc(sizeof(*mbc), GFP_KERNEL);
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if (!mbc)
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return -ENOMEM;
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platform_set_drvdata(pdev, mbc);
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mbc->pcf = dev_to_pcf50633(pdev->dev.parent);
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/* Set up IRQ handlers */
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for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
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pcf50633_register_irq(mbc->pcf, mbc_irq_handlers[i],
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pcf50633_mbc_irq_handler, mbc);
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/* Create power supplies */
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mbc->adapter.name = "adapter";
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mbc->adapter.type = POWER_SUPPLY_TYPE_MAINS;
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mbc->adapter.properties = power_props;
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mbc->adapter.num_properties = ARRAY_SIZE(power_props);
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mbc->adapter.get_property = &adapter_get_property;
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mbc->adapter.supplied_to = mbc->pcf->pdata->batteries;
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mbc->adapter.num_supplicants = mbc->pcf->pdata->num_batteries;
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mbc->usb.name = "usb";
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mbc->usb.type = POWER_SUPPLY_TYPE_USB;
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mbc->usb.properties = power_props;
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mbc->usb.num_properties = ARRAY_SIZE(power_props);
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mbc->usb.get_property = usb_get_property;
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mbc->usb.supplied_to = mbc->pcf->pdata->batteries;
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mbc->usb.num_supplicants = mbc->pcf->pdata->num_batteries;
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mbc->ac.name = "ac";
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mbc->ac.type = POWER_SUPPLY_TYPE_MAINS;
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mbc->ac.properties = power_props;
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mbc->ac.num_properties = ARRAY_SIZE(power_props);
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mbc->ac.get_property = ac_get_property;
|
|
mbc->ac.supplied_to = mbc->pcf->pdata->batteries;
|
|
mbc->ac.num_supplicants = mbc->pcf->pdata->num_batteries;
|
|
|
|
ret = power_supply_register(&pdev->dev, &mbc->adapter);
|
|
if (ret) {
|
|
dev_err(mbc->pcf->dev, "failed to register adapter\n");
|
|
kfree(mbc);
|
|
return ret;
|
|
}
|
|
|
|
ret = power_supply_register(&pdev->dev, &mbc->usb);
|
|
if (ret) {
|
|
dev_err(mbc->pcf->dev, "failed to register usb\n");
|
|
power_supply_unregister(&mbc->adapter);
|
|
kfree(mbc);
|
|
return ret;
|
|
}
|
|
|
|
ret = power_supply_register(&pdev->dev, &mbc->ac);
|
|
if (ret) {
|
|
dev_err(mbc->pcf->dev, "failed to register ac\n");
|
|
power_supply_unregister(&mbc->adapter);
|
|
power_supply_unregister(&mbc->usb);
|
|
kfree(mbc);
|
|
return ret;
|
|
}
|
|
|
|
ret = sysfs_create_group(&pdev->dev.kobj, &mbc_attr_group);
|
|
if (ret)
|
|
dev_err(mbc->pcf->dev, "failed to create sysfs entries\n");
|
|
|
|
mbcs1 = pcf50633_reg_read(mbc->pcf, PCF50633_REG_MBCS1);
|
|
if (mbcs1 & PCF50633_MBCS1_USBPRES)
|
|
pcf50633_mbc_irq_handler(PCF50633_IRQ_USBINS, mbc);
|
|
if (mbcs1 & PCF50633_MBCS1_ADAPTPRES)
|
|
pcf50633_mbc_irq_handler(PCF50633_IRQ_ADPINS, mbc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int __devexit pcf50633_mbc_remove(struct platform_device *pdev)
|
|
{
|
|
struct pcf50633_mbc *mbc = platform_get_drvdata(pdev);
|
|
int i;
|
|
|
|
/* Remove IRQ handlers */
|
|
for (i = 0; i < ARRAY_SIZE(mbc_irq_handlers); i++)
|
|
pcf50633_free_irq(mbc->pcf, mbc_irq_handlers[i]);
|
|
|
|
power_supply_unregister(&mbc->usb);
|
|
power_supply_unregister(&mbc->adapter);
|
|
power_supply_unregister(&mbc->ac);
|
|
|
|
kfree(mbc);
|
|
|
|
return 0;
|
|
}
|
|
|
|
static 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");
|