Release 4.7 drivers/mfd/ab8500-sysctrl.c
/*
* Copyright (C) ST-Ericsson SA 2010
* Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com> for ST Ericsson.
* License terms: GNU General Public License (GPL) version 2
*/
#include <linux/err.h>
#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/pm.h>
#include <linux/reboot.h>
#include <linux/signal.h>
#include <linux/power_supply.h>
#include <linux/mfd/abx500.h>
#include <linux/mfd/abx500/ab8500.h>
#include <linux/mfd/abx500/ab8500-sysctrl.h>
/* RtcCtrl bits */
#define AB8500_ALARM_MIN_LOW 0x08
#define AB8500_ALARM_MIN_MID 0x09
#define RTC_CTRL 0x0B
#define RTC_ALARM_ENABLE 0x4
static struct device *sysctrl_dev;
static void ab8500_power_off(void)
{
sigset_t old;
sigset_t all;
static const char * const pss[] = {"ab8500_ac", "pm2301", "ab8500_usb"};
int i;
bool charger_present = false;
union power_supply_propval val;
struct power_supply *psy;
int ret;
if (sysctrl_dev == NULL) {
pr_err("%s: sysctrl not initialized\n", __func__);
return;
}
/*
* If we have a charger connected and we're powering off,
* reboot into charge-only mode.
*/
for (i = 0; i < ARRAY_SIZE(pss); i++) {
psy = power_supply_get_by_name(pss[i]);
if (!psy)
continue;
ret = power_supply_get_property(psy, POWER_SUPPLY_PROP_ONLINE,
&val);
power_supply_put(psy);
if (!ret && val.intval) {
charger_present = true;
break;
}
}
if (!charger_present)
goto shutdown;
/* Check if battery is known */
psy = power_supply_get_by_name("ab8500_btemp");
if (psy) {
ret = power_supply_get_property(psy,
POWER_SUPPLY_PROP_TECHNOLOGY, &val);
if (!ret && val.intval != POWER_SUPPLY_TECHNOLOGY_UNKNOWN) {
pr_info("Charger '%s' is connected with known battery",
pss[i]);
pr_info(" - Rebooting.\n");
machine_restart("charging");
}
power_supply_put(psy);
}
shutdown:
sigfillset(&all);
if (!sigprocmask(SIG_BLOCK, &all, &old)) {
(void)ab8500_sysctrl_set(AB8500_STW4500CTRL1,
AB8500_STW4500CTRL1_SWOFF |
AB8500_STW4500CTRL1_SWRESET4500N);
(void)sigprocmask(SIG_SETMASK, &old, NULL);
}
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| jonas aberg | jonas aberg | 155 | 60.78% | 3 | 30.00% |
| lee jones | lee jones | 69 | 27.06% | 2 | 20.00% |
| marcus danielsson | marcus danielsson | 16 | 6.27% | 1 | 10.00% |
| krzysztof kozlowski | krzysztof kozlowski | 12 | 4.71% | 2 | 20.00% |
| rajkumar kasirajan | rajkumar kasirajan | 2 | 0.78% | 1 | 10.00% |
| fabio baltieri | fabio baltieri | 1 | 0.39% | 1 | 10.00% |
| Total | 255 | 100.00% | 10 | 100.00% |
static inline bool valid_bank(u8 bank)
{
return ((bank == AB8500_SYS_CTRL1_BLOCK) ||
(bank == AB8500_SYS_CTRL2_BLOCK));
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mattias nilsson | mattias nilsson | 25 | 100.00% | 1 | 100.00% |
| Total | 25 | 100.00% | 1 | 100.00% |
int ab8500_sysctrl_read(u16 reg, u8 *value)
{
u8 bank;
if (sysctrl_dev == NULL)
return -EINVAL;
bank = (reg >> 8);
if (!valid_bank(bank))
return -EINVAL;
return abx500_get_register_interruptible(sysctrl_dev, bank,
(u8)(reg & 0xFF), value);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mattias nilsson | mattias nilsson | 63 | 98.44% | 1 | 50.00% |
| marcus danielsson | marcus danielsson | 1 | 1.56% | 1 | 50.00% |
| Total | 64 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(ab8500_sysctrl_read);
int ab8500_sysctrl_write(u16 reg, u8 mask, u8 value)
{
u8 bank;
if (sysctrl_dev == NULL)
return -EINVAL;
bank = (reg >> 8);
if (!valid_bank(bank))
return -EINVAL;
return abx500_mask_and_set_register_interruptible(sysctrl_dev, bank,
(u8)(reg & 0xFF), mask, value);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mattias nilsson | mattias nilsson | 67 | 98.53% | 1 | 50.00% |
| marcus danielsson | marcus danielsson | 1 | 1.47% | 1 | 50.00% |
| Total | 68 | 100.00% | 2 | 100.00% |
EXPORT_SYMBOL(ab8500_sysctrl_write);
static int ab8500_sysctrl_probe(struct platform_device *pdev)
{
struct ab8500 *ab8500 = dev_get_drvdata(pdev->dev.parent);
struct ab8500_platform_data *plat;
struct ab8500_sysctrl_platform_data *pdata;
plat = dev_get_platdata(pdev->dev.parent);
if (!plat)
return -EINVAL;
sysctrl_dev = &pdev->dev;
if (!pm_power_off)
pm_power_off = ab8500_power_off;
pdata = plat->sysctrl;
if (pdata) {
int last, ret, i, j;
if (is_ab8505(ab8500))
last = AB8500_SYSCLKREQ4RFCLKBUF;
else
last = AB8500_SYSCLKREQ8RFCLKBUF;
for (i = AB8500_SYSCLKREQ1RFCLKBUF; i <= last; i++) {
j = i - AB8500_SYSCLKREQ1RFCLKBUF;
ret = ab8500_sysctrl_write(i, 0xff,
pdata->initial_req_buf_config[j]);
dev_dbg(&pdev->dev,
"Setting SysClkReq%dRfClkBuf 0x%X\n",
j + 1,
pdata->initial_req_buf_config[j]);
if (ret < 0) {
dev_err(&pdev->dev,
"Can't set sysClkReq%dRfClkBuf: %d\n",
j + 1, ret);
}
}
}
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| kennet wallden | kennet wallden | 91 | 47.15% | 1 | 12.50% |
| rabin vincent | rabin vincent | 46 | 23.83% | 1 | 12.50% |
| lee jones | lee jones | 25 | 12.95% | 2 | 25.00% |
| mattias nilsson | mattias nilsson | 14 | 7.25% | 1 | 12.50% |
| marcus danielsson | marcus danielsson | 9 | 4.66% | 1 | 12.50% |
| fabio baltieri | fabio baltieri | 8 | 4.15% | 2 | 25.00% |
| Total | 193 | 100.00% | 8 | 100.00% |
static int ab8500_sysctrl_remove(struct platform_device *pdev)
{
sysctrl_dev = NULL;
if (pm_power_off == ab8500_power_off)
pm_power_off = NULL;
return 0;
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mattias nilsson | mattias nilsson | 18 | 64.29% | 1 | 50.00% |
| fabio baltieri | fabio baltieri | 10 | 35.71% | 1 | 50.00% |
| Total | 28 | 100.00% | 2 | 100.00% |
static struct platform_driver ab8500_sysctrl_driver = {
.driver = {
.name = "ab8500-sysctrl",
},
.probe = ab8500_sysctrl_probe,
.remove = ab8500_sysctrl_remove,
};
static int __init ab8500_sysctrl_init(void)
{
return platform_driver_register(&ab8500_sysctrl_driver);
}
Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mattias nilsson | mattias nilsson | 16 | 100.00% | 1 | 100.00% |
| Total | 16 | 100.00% | 1 | 100.00% |
arch_initcall(ab8500_sysctrl_init);
MODULE_AUTHOR("Mattias Nilsson <mattias.i.nilsson@stericsson.com");
MODULE_DESCRIPTION("AB8500 system control driver");
MODULE_LICENSE("GPL v2");
Overall Contributors
| Person | Tokens | Prop | Commits | CommitProp |
| mattias nilsson | mattias nilsson | 268 | 35.26% | 1 | 5.00% |
| jonas aberg | jonas aberg | 171 | 22.50% | 4 | 20.00% |
| lee jones | lee jones | 117 | 15.39% | 3 | 15.00% |
| kennet wallden | kennet wallden | 91 | 11.97% | 1 | 5.00% |
| rabin vincent | rabin vincent | 46 | 6.05% | 1 | 5.00% |
| marcus danielsson | marcus danielsson | 27 | 3.55% | 1 | 5.00% |
| fabio baltieri | fabio baltieri | 19 | 2.50% | 3 | 15.00% |
| krzysztof kozlowski | krzysztof kozlowski | 12 | 1.58% | 2 | 10.00% |
| linus walleij | linus walleij | 3 | 0.39% | 1 | 5.00% |
| paul gortmaker | paul gortmaker | 3 | 0.39% | 1 | 5.00% |
| rajkumar kasirajan | rajkumar kasirajan | 2 | 0.26% | 1 | 5.00% |
| ulf hansson | ulf hansson | 1 | 0.13% | 1 | 5.00% |
| Total | 760 | 100.00% | 20 | 100.00% |
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