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e6b5be2be4
Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while. Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEABECAAYFAlSOD20ACgkQMUfUDdst+ylLPACg2QrW1oHhdTMT9WI8jihlHVRM 53kAoLeteByQ3iVwWurwwseRPiWa8+MI =OVRS -----END PGP SIGNATURE----- Merge tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core Pull driver core update from Greg KH: "Here's the set of driver core patches for 3.19-rc1. They are dominated by the removal of the .owner field in platform drivers. They touch a lot of files, but they are "simple" changes, just removing a line in a structure. Other than that, a few minor driver core and debugfs changes. There are some ath9k patches coming in through this tree that have been acked by the wireless maintainers as they relied on the debugfs changes. Everything has been in linux-next for a while" * tag 'driver-core-3.19-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/driver-core: (324 commits) Revert "ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries" fs: debugfs: add forward declaration for struct device type firmware class: Deletion of an unnecessary check before the function call "vunmap" firmware loader: fix hung task warning dump devcoredump: provide a one-way disable function device: Add dev_<level>_once variants ath: ath9k: use debugfs_create_devm_seqfile() helper for seq_file entries ath: use seq_file api for ath9k debugfs files debugfs: add helper function to create device related seq_file drivers/base: cacheinfo: remove noisy error boot message Revert "core: platform: add warning if driver has no owner" drivers: base: support cpu cache information interface to userspace via sysfs drivers: base: add cpu_device_create to support per-cpu devices topology: replace custom attribute macros with standard DEVICE_ATTR* cpumask: factor out show_cpumap into separate helper function driver core: Fix unbalanced device reference in drivers_probe driver core: fix race with userland in device_add() sysfs/kernfs: make read requests on pre-alloc files use the buffer. sysfs/kernfs: allow attributes to request write buffer be pre-allocated. fs: sysfs: return EGBIG on write if offset is larger than file size ...
197 lines
4.3 KiB
C
197 lines
4.3 KiB
C
/*
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* Copyright (C) ST-Ericsson SA 2010
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* Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com> for ST Ericsson.
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* License terms: GNU General Public License (GPL) version 2
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*/
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#include <linux/err.h>
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/pm.h>
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#include <linux/reboot.h>
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#include <linux/signal.h>
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#include <linux/power_supply.h>
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#include <linux/mfd/abx500.h>
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#include <linux/mfd/abx500/ab8500.h>
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#include <linux/mfd/abx500/ab8500-sysctrl.h>
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/* RtcCtrl bits */
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#define AB8500_ALARM_MIN_LOW 0x08
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#define AB8500_ALARM_MIN_MID 0x09
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#define RTC_CTRL 0x0B
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#define RTC_ALARM_ENABLE 0x4
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static struct device *sysctrl_dev;
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static void ab8500_power_off(void)
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{
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sigset_t old;
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sigset_t all;
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static char *pss[] = {"ab8500_ac", "pm2301", "ab8500_usb"};
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int i;
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bool charger_present = false;
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union power_supply_propval val;
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struct power_supply *psy;
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int ret;
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if (sysctrl_dev == NULL) {
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pr_err("%s: sysctrl not initialized\n", __func__);
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return;
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}
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/*
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* If we have a charger connected and we're powering off,
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* reboot into charge-only mode.
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*/
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for (i = 0; i < ARRAY_SIZE(pss); i++) {
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psy = power_supply_get_by_name(pss[i]);
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if (!psy)
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continue;
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ret = psy->get_property(psy, POWER_SUPPLY_PROP_ONLINE, &val);
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if (!ret && val.intval) {
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charger_present = true;
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break;
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}
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}
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if (!charger_present)
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goto shutdown;
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/* Check if battery is known */
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psy = power_supply_get_by_name("ab8500_btemp");
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if (psy) {
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ret = psy->get_property(psy, POWER_SUPPLY_PROP_TECHNOLOGY,
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&val);
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if (!ret && val.intval != POWER_SUPPLY_TECHNOLOGY_UNKNOWN) {
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printk(KERN_INFO
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"Charger \"%s\" is connected with known battery."
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" Rebooting.\n",
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pss[i]);
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machine_restart("charging");
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}
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}
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shutdown:
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sigfillset(&all);
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if (!sigprocmask(SIG_BLOCK, &all, &old)) {
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(void)ab8500_sysctrl_set(AB8500_STW4500CTRL1,
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AB8500_STW4500CTRL1_SWOFF |
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AB8500_STW4500CTRL1_SWRESET4500N);
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(void)sigprocmask(SIG_SETMASK, &old, NULL);
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}
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}
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static inline bool valid_bank(u8 bank)
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{
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return ((bank == AB8500_SYS_CTRL1_BLOCK) ||
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(bank == AB8500_SYS_CTRL2_BLOCK));
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}
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int ab8500_sysctrl_read(u16 reg, u8 *value)
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{
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u8 bank;
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if (sysctrl_dev == NULL)
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return -EINVAL;
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bank = (reg >> 8);
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if (!valid_bank(bank))
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return -EINVAL;
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return abx500_get_register_interruptible(sysctrl_dev, bank,
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(u8)(reg & 0xFF), value);
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}
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EXPORT_SYMBOL(ab8500_sysctrl_read);
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int ab8500_sysctrl_write(u16 reg, u8 mask, u8 value)
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{
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u8 bank;
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if (sysctrl_dev == NULL)
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return -EINVAL;
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bank = (reg >> 8);
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if (!valid_bank(bank))
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return -EINVAL;
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return abx500_mask_and_set_register_interruptible(sysctrl_dev, bank,
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(u8)(reg & 0xFF), mask, value);
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}
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EXPORT_SYMBOL(ab8500_sysctrl_write);
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static int ab8500_sysctrl_probe(struct platform_device *pdev)
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{
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struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
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struct ab8500_platform_data *plat;
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struct ab8500_sysctrl_platform_data *pdata;
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plat = dev_get_platdata(pdev->dev.parent);
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if (!plat)
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return -EINVAL;
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sysctrl_dev = &pdev->dev;
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if (!pm_power_off)
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pm_power_off = ab8500_power_off;
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pdata = plat->sysctrl;
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if (pdata) {
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int last, ret, i, j;
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if (is_ab8505(ab8500))
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last = AB8500_SYSCLKREQ4RFCLKBUF;
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else
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last = AB8500_SYSCLKREQ8RFCLKBUF;
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for (i = AB8500_SYSCLKREQ1RFCLKBUF; i <= last; i++) {
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j = i - AB8500_SYSCLKREQ1RFCLKBUF;
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ret = ab8500_sysctrl_write(i, 0xff,
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pdata->initial_req_buf_config[j]);
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dev_dbg(&pdev->dev,
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"Setting SysClkReq%dRfClkBuf 0x%X\n",
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j + 1,
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pdata->initial_req_buf_config[j]);
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if (ret < 0) {
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dev_err(&pdev->dev,
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"unable to set sysClkReq%dRfClkBuf: "
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"%d\n", j + 1, ret);
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}
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}
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}
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return 0;
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}
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static int ab8500_sysctrl_remove(struct platform_device *pdev)
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{
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sysctrl_dev = NULL;
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if (pm_power_off == ab8500_power_off)
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pm_power_off = NULL;
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return 0;
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}
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static struct platform_driver ab8500_sysctrl_driver = {
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.driver = {
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.name = "ab8500-sysctrl",
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},
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.probe = ab8500_sysctrl_probe,
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.remove = ab8500_sysctrl_remove,
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};
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static int __init ab8500_sysctrl_init(void)
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{
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return platform_driver_register(&ab8500_sysctrl_driver);
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}
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arch_initcall(ab8500_sysctrl_init);
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MODULE_AUTHOR("Mattias Nilsson <mattias.i.nilsson@stericsson.com");
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MODULE_DESCRIPTION("AB8500 system control driver");
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MODULE_LICENSE("GPL v2");
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