diff options
Diffstat (limited to 'drivers/rtc/rtc-palmas.c')
| -rw-r--r-- | drivers/rtc/rtc-palmas.c | 68 |
1 files changed, 43 insertions, 25 deletions
diff --git a/drivers/rtc/rtc-palmas.c b/drivers/rtc/rtc-palmas.c index a1fecc8d97fc..aecada6bcf8b 100644 --- a/drivers/rtc/rtc-palmas.c +++ b/drivers/rtc/rtc-palmas.c @@ -1,3 +1,4 @@ +// SPDX-License-Identifier: GPL-2.0-only /* * rtc-palmas.c -- Palmas Real Time Clock driver. @@ -7,20 +8,6 @@ * Copyright (c) 2012, NVIDIA Corporation. * * Author: Laxman Dewangan <ldewangan@nvidia.com> - * - * 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 version 2. - * - * This program is distributed "as is" WITHOUT ANY WARRANTY of any kind, - * whether express or implied; 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/bcd.h> @@ -225,7 +212,7 @@ static irqreturn_t palmas_rtc_interrupt(int irq, void *context) return IRQ_HANDLED; } -static struct rtc_class_ops palmas_rtc_ops = { +static const struct rtc_class_ops palmas_rtc_ops = { .read_time = palmas_rtc_read_time, .set_time = palmas_rtc_set_time, .read_alarm = palmas_rtc_read_alarm, @@ -238,6 +225,15 @@ static int palmas_rtc_probe(struct platform_device *pdev) struct palmas *palmas = dev_get_drvdata(pdev->dev.parent); struct palmas_rtc *palmas_rtc = NULL; int ret; + bool enable_bb_charging = false; + bool high_bb_charging = false; + + if (pdev->dev.of_node) { + enable_bb_charging = of_property_read_bool(pdev->dev.of_node, + "ti,backup-battery-chargeable"); + high_bb_charging = of_property_read_bool(pdev->dev.of_node, + "ti,backup-battery-charge-high-current"); + } palmas_rtc = devm_kzalloc(&pdev->dev, sizeof(struct palmas_rtc), GFP_KERNEL); @@ -254,6 +250,32 @@ static int palmas_rtc_probe(struct platform_device *pdev) palmas_rtc->dev = &pdev->dev; platform_set_drvdata(pdev, palmas_rtc); + if (enable_bb_charging) { + unsigned reg = PALMAS_BACKUP_BATTERY_CTRL_BBS_BBC_LOW_ICHRG; + + if (high_bb_charging) + reg = 0; + + ret = palmas_update_bits(palmas, PALMAS_PMU_CONTROL_BASE, + PALMAS_BACKUP_BATTERY_CTRL, + PALMAS_BACKUP_BATTERY_CTRL_BBS_BBC_LOW_ICHRG, reg); + if (ret < 0) { + dev_err(&pdev->dev, + "BACKUP_BATTERY_CTRL update failed, %d\n", ret); + return ret; + } + + ret = palmas_update_bits(palmas, PALMAS_PMU_CONTROL_BASE, + PALMAS_BACKUP_BATTERY_CTRL, + PALMAS_BACKUP_BATTERY_CTRL_BB_CHG_EN, + PALMAS_BACKUP_BATTERY_CTRL_BB_CHG_EN); + if (ret < 0) { + dev_err(&pdev->dev, + "BACKUP_BATTERY_CTRL update failed, %d\n", ret); + return ret; + } + } + /* Start RTC */ ret = palmas_update_bits(palmas, PALMAS_RTC_BASE, PALMAS_RTC_CTRL_REG, PALMAS_RTC_CTRL_REG_STOP_RTC, @@ -265,7 +287,7 @@ static int palmas_rtc_probe(struct platform_device *pdev) palmas_rtc->irq = platform_get_irq(pdev, 0); - device_init_wakeup(&pdev->dev, 1); + device_init_wakeup(&pdev->dev, true); palmas_rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name, &palmas_rtc_ops, THIS_MODULE); if (IS_ERR(palmas_rtc->rtc)) { @@ -276,8 +298,7 @@ static int palmas_rtc_probe(struct platform_device *pdev) ret = devm_request_threaded_irq(&pdev->dev, palmas_rtc->irq, NULL, palmas_rtc_interrupt, - IRQF_TRIGGER_LOW | IRQF_ONESHOT | - IRQF_EARLY_RESUME, + IRQF_TRIGGER_LOW | IRQF_ONESHOT, dev_name(&pdev->dev), palmas_rtc); if (ret < 0) { dev_err(&pdev->dev, "IRQ request failed, err = %d\n", ret); @@ -287,10 +308,9 @@ static int palmas_rtc_probe(struct platform_device *pdev) return 0; } -static int palmas_rtc_remove(struct platform_device *pdev) +static void palmas_rtc_remove(struct platform_device *pdev) { palmas_rtc_alarm_irq_enable(&pdev->dev, 0); - return 0; } #ifdef CONFIG_PM_SLEEP @@ -313,12 +333,11 @@ static int palmas_rtc_resume(struct device *dev) } #endif -static const struct dev_pm_ops palmas_rtc_pm_ops = { - SET_SYSTEM_SLEEP_PM_OPS(palmas_rtc_suspend, palmas_rtc_resume) -}; +static SIMPLE_DEV_PM_OPS(palmas_rtc_pm_ops, palmas_rtc_suspend, + palmas_rtc_resume); #ifdef CONFIG_OF -static struct of_device_id of_palmas_rtc_match[] = { +static const struct of_device_id of_palmas_rtc_match[] = { { .compatible = "ti,palmas-rtc"}, { }, }; @@ -329,7 +348,6 @@ static struct platform_driver palmas_rtc_driver = { .probe = palmas_rtc_probe, .remove = palmas_rtc_remove, .driver = { - .owner = THIS_MODULE, .name = "palmas-rtc", .pm = &palmas_rtc_pm_ops, .of_match_table = of_match_ptr(of_palmas_rtc_match), |