diff options
Diffstat (limited to 'drivers/rtc/rtc-palmas.c')
| -rw-r--r-- | drivers/rtc/rtc-palmas.c | 59 |
1 files changed, 49 insertions, 10 deletions
diff --git a/drivers/rtc/rtc-palmas.c b/drivers/rtc/rtc-palmas.c index 59c42986254..4dfe2d793fa 100644 --- a/drivers/rtc/rtc-palmas.c +++ b/drivers/rtc/rtc-palmas.c @@ -30,6 +30,7 @@ #include <linux/kernel.h> #include <linux/mfd/palmas.h> #include <linux/module.h> +#include <linux/of.h> #include <linux/rtc.h> #include <linux/types.h> #include <linux/platform_device.h> @@ -237,6 +238,15 @@ 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; + + 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); @@ -253,6 +263,32 @@ 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, @@ -264,7 +300,8 @@ static int palmas_rtc_probe(struct platform_device *pdev) palmas_rtc->irq = platform_get_irq(pdev, 0); - palmas_rtc->rtc = rtc_device_register(pdev->name, &pdev->dev, + device_init_wakeup(&pdev->dev, 1); + palmas_rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name, &palmas_rtc_ops, THIS_MODULE); if (IS_ERR(palmas_rtc->rtc)) { ret = PTR_ERR(palmas_rtc->rtc); @@ -272,28 +309,22 @@ static int palmas_rtc_probe(struct platform_device *pdev) return ret; } - ret = request_threaded_irq(palmas_rtc->irq, NULL, + ret = devm_request_threaded_irq(&pdev->dev, palmas_rtc->irq, NULL, palmas_rtc_interrupt, IRQF_TRIGGER_LOW | IRQF_ONESHOT | IRQF_EARLY_RESUME, dev_name(&pdev->dev), palmas_rtc); if (ret < 0) { dev_err(&pdev->dev, "IRQ request failed, err = %d\n", ret); - rtc_device_unregister(palmas_rtc->rtc); return ret; } - device_set_wakeup_capable(&pdev->dev, 1); return 0; } static int palmas_rtc_remove(struct platform_device *pdev) { - struct palmas_rtc *palmas_rtc = platform_get_drvdata(pdev); - palmas_rtc_alarm_irq_enable(&pdev->dev, 0); - free_irq(palmas_rtc->irq, palmas_rtc); - rtc_device_unregister(palmas_rtc->rtc); return 0; } @@ -317,9 +348,16 @@ 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 const struct of_device_id of_palmas_rtc_match[] = { + { .compatible = "ti,palmas-rtc"}, + { }, }; +MODULE_DEVICE_TABLE(of, of_palmas_rtc_match); +#endif static struct platform_driver palmas_rtc_driver = { .probe = palmas_rtc_probe, @@ -328,6 +366,7 @@ static struct platform_driver palmas_rtc_driver = { .owner = THIS_MODULE, .name = "palmas-rtc", .pm = &palmas_rtc_pm_ops, + .of_match_table = of_match_ptr(of_palmas_rtc_match), }, }; |