diff options
Diffstat (limited to 'drivers/rtc')
34 files changed, 637 insertions, 766 deletions
diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig index 0bbbf778ecfa..838bdc138ffe 100644 --- a/drivers/rtc/Kconfig +++ b/drivers/rtc/Kconfig @@ -1321,13 +1321,6 @@ config RTC_DRV_SPEAR If you say Y here you will get support for the RTC found on spear -config RTC_DRV_PCF50633 - depends on MFD_PCF50633 - tristate "NXP PCF50633 RTC" - help - If you say yes here you get support for the RTC subsystem of the - NXP PCF50633 used in embedded systems. - config RTC_DRV_AB8500 tristate "ST-Ericsson AB8500 RTC" depends on AB8500_CORE diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile index 489b4ab07068..31473b3276d9 100644 --- a/drivers/rtc/Makefile +++ b/drivers/rtc/Makefile @@ -126,7 +126,6 @@ obj-$(CONFIG_RTC_DRV_PALMAS) += rtc-palmas.o obj-$(CONFIG_RTC_DRV_PCAP) += rtc-pcap.o obj-$(CONFIG_RTC_DRV_PCF2123) += rtc-pcf2123.o obj-$(CONFIG_RTC_DRV_PCF2127) += rtc-pcf2127.o -obj-$(CONFIG_RTC_DRV_PCF50633) += rtc-pcf50633.o obj-$(CONFIG_RTC_DRV_PCF85063) += rtc-pcf85063.o obj-$(CONFIG_RTC_DRV_PCF8523) += rtc-pcf8523.o obj-$(CONFIG_RTC_DRV_PCF85363) += rtc-pcf85363.o diff --git a/drivers/rtc/rtc-ab-eoz9.c b/drivers/rtc/rtc-ab-eoz9.c index d2b60487d462..de002f7a39bf 100644 --- a/drivers/rtc/rtc-ab-eoz9.c +++ b/drivers/rtc/rtc-ab-eoz9.c @@ -426,29 +426,9 @@ static umode_t abeoz9_is_visible(const void *data, } } -static const u32 abeoz9_chip_config[] = { - HWMON_C_REGISTER_TZ, - 0 -}; - -static const struct hwmon_channel_info abeoz9_chip = { - .type = hwmon_chip, - .config = abeoz9_chip_config, -}; - -static const u32 abeoz9_temp_config[] = { - HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MIN, - 0 -}; - -static const struct hwmon_channel_info abeoz9_temp = { - .type = hwmon_temp, - .config = abeoz9_temp_config, -}; - static const struct hwmon_channel_info * const abeoz9_info[] = { - &abeoz9_chip, - &abeoz9_temp, + HWMON_CHANNEL_INFO(chip, HWMON_C_REGISTER_TZ), + HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT | HWMON_T_MAX | HWMON_T_MIN), NULL }; diff --git a/drivers/rtc/rtc-ab8500.c b/drivers/rtc/rtc-ab8500.c index 2dcda96f4a8e..ed2b6b8bb3bf 100644 --- a/drivers/rtc/rtc-ab8500.c +++ b/drivers/rtc/rtc-ab8500.c @@ -361,7 +361,7 @@ static int ab8500_rtc_probe(struct platform_device *pdev) return -ENODEV; } - device_init_wakeup(&pdev->dev, true); + devm_device_init_wakeup(&pdev->dev); rtc = devm_rtc_allocate_device(&pdev->dev); if (IS_ERR(rtc)) @@ -375,7 +375,7 @@ static int ab8500_rtc_probe(struct platform_device *pdev) if (err < 0) return err; - dev_pm_set_wake_irq(&pdev->dev, irq); + devm_pm_set_wake_irq(&pdev->dev, irq); platform_set_drvdata(pdev, rtc); set_bit(RTC_FEATURE_ALARM_RES_MINUTE, rtc->features); @@ -392,18 +392,11 @@ static int ab8500_rtc_probe(struct platform_device *pdev) return devm_rtc_register_device(rtc); } -static void ab8500_rtc_remove(struct platform_device *pdev) -{ - dev_pm_clear_wake_irq(&pdev->dev); - device_init_wakeup(&pdev->dev, false); -} - static struct platform_driver ab8500_rtc_driver = { .driver = { .name = "ab8500-rtc", }, .probe = ab8500_rtc_probe, - .remove = ab8500_rtc_remove, .id_table = ab85xx_rtc_ids, }; diff --git a/drivers/rtc/rtc-aspeed.c b/drivers/rtc/rtc-aspeed.c index 880b015eebaf..0d0053b52f9b 100644 --- a/drivers/rtc/rtc-aspeed.c +++ b/drivers/rtc/rtc-aspeed.c @@ -8,7 +8,6 @@ #include <linux/io.h> struct aspeed_rtc { - struct rtc_device *rtc_dev; void __iomem *base; }; @@ -85,6 +84,7 @@ static const struct rtc_class_ops aspeed_rtc_ops = { static int aspeed_rtc_probe(struct platform_device *pdev) { struct aspeed_rtc *rtc; + struct rtc_device *rtc_dev; rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL); if (!rtc) @@ -94,17 +94,17 @@ static int aspeed_rtc_probe(struct platform_device *pdev) if (IS_ERR(rtc->base)) return PTR_ERR(rtc->base); - rtc->rtc_dev = devm_rtc_allocate_device(&pdev->dev); - if (IS_ERR(rtc->rtc_dev)) - return PTR_ERR(rtc->rtc_dev); + rtc_dev = devm_rtc_allocate_device(&pdev->dev); + if (IS_ERR(rtc_dev)) + return PTR_ERR(rtc_dev); platform_set_drvdata(pdev, rtc); - rtc->rtc_dev->ops = &aspeed_rtc_ops; - rtc->rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_1900; - rtc->rtc_dev->range_max = 38814989399LL; /* 3199-12-31 23:59:59 */ + rtc_dev->ops = &aspeed_rtc_ops; + rtc_dev->range_min = RTC_TIMESTAMP_BEGIN_1900; + rtc_dev->range_max = 38814989399LL; /* 3199-12-31 23:59:59 */ - return devm_rtc_register_device(rtc->rtc_dev); + return devm_rtc_register_device(rtc_dev); } static const struct of_device_id aspeed_rtc_match[] = { diff --git a/drivers/rtc/rtc-cros-ec.c b/drivers/rtc/rtc-cros-ec.c index 865c2e82c7a5..e956505a06fb 100644 --- a/drivers/rtc/rtc-cros-ec.c +++ b/drivers/rtc/rtc-cros-ec.c @@ -35,21 +35,18 @@ struct cros_ec_rtc { static int cros_ec_rtc_get(struct cros_ec_device *cros_ec, u32 command, u32 *response) { + DEFINE_RAW_FLEX(struct cros_ec_command, msg, data, + sizeof(struct ec_response_rtc)); int ret; - struct { - struct cros_ec_command msg; - struct ec_response_rtc data; - } __packed msg; - memset(&msg, 0, sizeof(msg)); - msg.msg.command = command; - msg.msg.insize = sizeof(msg.data); + msg->command = command; + msg->insize = sizeof(struct ec_response_rtc); - ret = cros_ec_cmd_xfer_status(cros_ec, &msg.msg); + ret = cros_ec_cmd_xfer_status(cros_ec, msg); if (ret < 0) return ret; - *response = msg.data.time; + *response = ((struct ec_response_rtc *)msg->data)->time; return 0; } @@ -57,18 +54,15 @@ static int cros_ec_rtc_get(struct cros_ec_device *cros_ec, u32 command, static int cros_ec_rtc_set(struct cros_ec_device *cros_ec, u32 command, u32 param) { + DEFINE_RAW_FLEX(struct cros_ec_command, msg, data, + sizeof(struct ec_response_rtc)); int ret; - struct { - struct cros_ec_command msg; - struct ec_response_rtc data; - } __packed msg; - memset(&msg, 0, sizeof(msg)); - msg.msg.command = command; - msg.msg.outsize = sizeof(msg.data); - msg.data.time = param; + msg->command = command; + msg->outsize = sizeof(struct ec_response_rtc); + ((struct ec_response_rtc *)msg->data)->time = param; - ret = cros_ec_cmd_xfer_status(cros_ec, &msg.msg); + ret = cros_ec_cmd_xfer_status(cros_ec, msg); if (ret < 0) return ret; return 0; diff --git a/drivers/rtc/rtc-ds1307.c b/drivers/rtc/rtc-ds1307.c index 872e0b679be4..5efbe69bf5ca 100644 --- a/drivers/rtc/rtc-ds1307.c +++ b/drivers/rtc/rtc-ds1307.c @@ -1807,10 +1807,8 @@ static int ds1307_probe(struct i2c_client *client) * For some variants, be sure alarms can trigger when we're * running on Vbackup (BBSQI/BBSQW) */ - if (want_irq || ds1307_can_wakeup_device) { + if (want_irq || ds1307_can_wakeup_device) regs[0] |= DS1337_BIT_INTCN | chip->bbsqi_bit; - regs[0] &= ~(DS1337_BIT_A2IE | DS1337_BIT_A1IE); - } regmap_write(ds1307->regmap, DS1337_REG_CONTROL, regs[0]); diff --git a/drivers/rtc/rtc-ds1343.c b/drivers/rtc/rtc-ds1343.c index ed5a6ba89a3e..aa9500791b7e 100644 --- a/drivers/rtc/rtc-ds1343.c +++ b/drivers/rtc/rtc-ds1343.c @@ -427,18 +427,13 @@ static int ds1343_probe(struct spi_device *spi) "unable to request irq for rtc ds1343\n"); } else { device_init_wakeup(&spi->dev, true); - dev_pm_set_wake_irq(&spi->dev, spi->irq); + devm_pm_set_wake_irq(&spi->dev, spi->irq); } } return 0; } -static void ds1343_remove(struct spi_device *spi) -{ - dev_pm_clear_wake_irq(&spi->dev); -} - #ifdef CONFIG_PM_SLEEP static int ds1343_suspend(struct device *dev) @@ -471,7 +466,6 @@ static struct spi_driver ds1343_driver = { .pm = &ds1343_pm, }, .probe = ds1343_probe, - .remove = ds1343_remove, .id_table = ds1343_id, }; diff --git a/drivers/rtc/rtc-ds2404.c b/drivers/rtc/rtc-ds2404.c index 3231fd9f61da..217694eca36c 100644 --- a/drivers/rtc/rtc-ds2404.c +++ b/drivers/rtc/rtc-ds2404.c @@ -31,7 +31,6 @@ struct ds2404 { struct gpio_desc *rst_gpiod; struct gpio_desc *clk_gpiod; struct gpio_desc *dq_gpiod; - struct rtc_device *rtc; }; static int ds2404_gpio_map(struct ds2404 *chip, struct platform_device *pdev) @@ -182,6 +181,7 @@ static const struct rtc_class_ops ds2404_rtc_ops = { static int rtc_probe(struct platform_device *pdev) { struct ds2404 *chip; + struct rtc_device *rtc; int retval = -EBUSY; chip = devm_kzalloc(&pdev->dev, sizeof(struct ds2404), GFP_KERNEL); @@ -190,9 +190,9 @@ static int rtc_probe(struct platform_device *pdev) chip->dev = &pdev->dev; - chip->rtc = devm_rtc_allocate_device(&pdev->dev); - if (IS_ERR(chip->rtc)) - return PTR_ERR(chip->rtc); + rtc = devm_rtc_allocate_device(&pdev->dev); + if (IS_ERR(rtc)) + return PTR_ERR(rtc); retval = ds2404_gpio_map(chip, pdev); if (retval) @@ -200,10 +200,10 @@ static int rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, chip); - chip->rtc->ops = &ds2404_rtc_ops; - chip->rtc->range_max = U32_MAX; + rtc->ops = &ds2404_rtc_ops; + rtc->range_max = U32_MAX; - retval = devm_rtc_register_device(chip->rtc); + retval = devm_rtc_register_device(rtc); if (retval) return retval; diff --git a/drivers/rtc/rtc-ds3232.c b/drivers/rtc/rtc-ds3232.c index 19c09c418746..18f35823b4b5 100644 --- a/drivers/rtc/rtc-ds3232.c +++ b/drivers/rtc/rtc-ds3232.c @@ -339,29 +339,9 @@ static int ds3232_hwmon_read(struct device *dev, return err; } -static u32 ds3232_hwmon_chip_config[] = { - HWMON_C_REGISTER_TZ, - 0 -}; - -static const struct hwmon_channel_info ds3232_hwmon_chip = { - .type = hwmon_chip, - .config = ds3232_hwmon_chip_config, -}; - -static u32 ds3232_hwmon_temp_config[] = { - HWMON_T_INPUT, - 0 -}; - -static const struct hwmon_channel_info ds3232_hwmon_temp = { - .type = hwmon_temp, - .config = ds3232_hwmon_temp_config, -}; - static const struct hwmon_channel_info * const ds3232_hwmon_info[] = { - &ds3232_hwmon_chip, - &ds3232_hwmon_temp, + HWMON_CHANNEL_INFO(chip, HWMON_C_REGISTER_TZ), + HWMON_CHANNEL_INFO(temp, HWMON_T_INPUT), NULL }; diff --git a/drivers/rtc/rtc-ep93xx.c b/drivers/rtc/rtc-ep93xx.c index 1fdd20d01560..dcdcdd06f30d 100644 --- a/drivers/rtc/rtc-ep93xx.c +++ b/drivers/rtc/rtc-ep93xx.c @@ -28,7 +28,6 @@ struct ep93xx_rtc { void __iomem *mmio_base; - struct rtc_device *rtc; }; static int ep93xx_rtc_get_swcomp(struct device *dev, unsigned short *preload, @@ -123,6 +122,7 @@ static const struct attribute_group ep93xx_rtc_sysfs_files = { static int ep93xx_rtc_probe(struct platform_device *pdev) { struct ep93xx_rtc *ep93xx_rtc; + struct rtc_device *rtc; int err; ep93xx_rtc = devm_kzalloc(&pdev->dev, sizeof(*ep93xx_rtc), GFP_KERNEL); @@ -135,18 +135,18 @@ static int ep93xx_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, ep93xx_rtc); - ep93xx_rtc->rtc = devm_rtc_allocate_device(&pdev->dev); - if (IS_ERR(ep93xx_rtc->rtc)) - return PTR_ERR(ep93xx_rtc->rtc); + rtc = devm_rtc_allocate_device(&pdev->dev); + if (IS_ERR(rtc)) + return PTR_ERR(rtc); - ep93xx_rtc->rtc->ops = &ep93xx_rtc_ops; - ep93xx_rtc->rtc->range_max = U32_MAX; + rtc->ops = &ep93xx_rtc_ops; + rtc->range_max = U32_MAX; - err = rtc_add_group(ep93xx_rtc->rtc, &ep93xx_rtc_sysfs_files); + err = rtc_add_group(rtc, &ep93xx_rtc_sysfs_files); if (err) return err; - return devm_rtc_register_device(ep93xx_rtc->rtc); + return devm_rtc_register_device(rtc); } static const struct of_device_id ep93xx_rtc_of_ids[] = { diff --git a/drivers/rtc/rtc-fsl-ftm-alarm.c b/drivers/rtc/rtc-fsl-ftm-alarm.c index a72c4ad0cec6..c8015f04c71f 100644 --- a/drivers/rtc/rtc-fsl-ftm-alarm.c +++ b/drivers/rtc/rtc-fsl-ftm-alarm.c @@ -309,7 +309,7 @@ static const struct of_device_id ftm_rtc_match[] = { }; MODULE_DEVICE_TABLE(of, ftm_rtc_match); -static const struct acpi_device_id ftm_imx_acpi_ids[] = { +static const struct acpi_device_id ftm_imx_acpi_ids[] __maybe_unused = { {"NXP0014",}, { } }; diff --git a/drivers/rtc/rtc-ftrtc010.c b/drivers/rtc/rtc-ftrtc010.c index cb4a5d101f53..02608d378495 100644 --- a/drivers/rtc/rtc-ftrtc010.c +++ b/drivers/rtc/rtc-ftrtc010.c @@ -28,7 +28,6 @@ MODULE_LICENSE("GPL"); MODULE_ALIAS("platform:" DRV_NAME); struct ftrtc010_rtc { - struct rtc_device *rtc_dev; void __iomem *rtc_base; int rtc_irq; struct clk *pclk; @@ -113,6 +112,7 @@ static int ftrtc010_rtc_probe(struct platform_device *pdev) struct ftrtc010_rtc *rtc; struct device *dev = &pdev->dev; struct resource *res; + struct rtc_device *rtc_dev; int ret; rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL); @@ -160,29 +160,28 @@ static int ftrtc010_rtc_probe(struct platform_device *pdev) goto err_disable_extclk; } - rtc->rtc_dev = devm_rtc_allocate_device(dev); - if (IS_ERR(rtc->rtc_dev)) { - ret = PTR_ERR(rtc->rtc_dev); + rtc_dev = devm_rtc_allocate_device(dev); + if (IS_ERR(rtc_dev)) { + ret = PTR_ERR(rtc_dev); goto err_disable_extclk; } - rtc->rtc_dev->ops = &ftrtc010_rtc_ops; + rtc_dev->ops = &ftrtc010_rtc_ops; sec = readl(rtc->rtc_base + FTRTC010_RTC_SECOND); min = readl(rtc->rtc_base + FTRTC010_RTC_MINUTE); hour = readl(rtc->rtc_base + FTRTC010_RTC_HOUR); days = readl(rtc->rtc_base + FTRTC010_RTC_DAYS); - rtc->rtc_dev->range_min = (u64)days * 86400 + hour * 3600 + - min * 60 + sec; - rtc->rtc_dev->range_max = U32_MAX + rtc->rtc_dev->range_min; + rtc_dev->range_min = (u64)days * 86400 + hour * 3600 + min * 60 + sec; + rtc_dev->range_max = U32_MAX + rtc_dev->range_min; ret = devm_request_irq(dev, rtc->rtc_irq, ftrtc010_rtc_interrupt, IRQF_SHARED, pdev->name, dev); if (unlikely(ret)) goto err_disable_extclk; - return devm_rtc_register_device(rtc->rtc_dev); + return devm_rtc_register_device(rtc_dev); err_disable_extclk: clk_disable_unprepare(rtc->extclk); diff --git a/drivers/rtc/rtc-m48t86.c b/drivers/rtc/rtc-m48t86.c index dd4a62e2d39c..10cd054fe86f 100644 --- a/drivers/rtc/rtc-m48t86.c +++ b/drivers/rtc/rtc-m48t86.c @@ -41,7 +41,6 @@ struct m48t86_rtc_info { void __iomem *index_reg; void __iomem *data_reg; - struct rtc_device *rtc; }; static unsigned char m48t86_readb(struct device *dev, unsigned long addr) @@ -219,6 +218,7 @@ static bool m48t86_verify_chip(struct platform_device *pdev) static int m48t86_rtc_probe(struct platform_device *pdev) { struct m48t86_rtc_info *info; + struct rtc_device *rtc; unsigned char reg; int err; struct nvmem_config m48t86_nvmem_cfg = { @@ -250,17 +250,17 @@ static int m48t86_rtc_probe(struct platform_device *pdev) return -ENODEV; } - info->rtc = devm_rtc_allocate_device(&pdev->dev); - if (IS_ERR(info->rtc)) - return PTR_ERR(info->rtc); + rtc = devm_rtc_allocate_device(&pdev->dev); + if (IS_ERR(rtc)) + return PTR_ERR(rtc); - info->rtc->ops = &m48t86_rtc_ops; + rtc->ops = &m48t86_rtc_ops; - err = devm_rtc_register_device(info->rtc); + err = devm_rtc_register_device(rtc); if (err) return err; - devm_rtc_nvmem_register(info->rtc, &m48t86_nvmem_cfg); + devm_rtc_nvmem_register(rtc, &m48t86_nvmem_cfg); /* read battery status */ reg = m48t86_readb(&pdev->dev, M48T86_D); diff --git a/drivers/rtc/rtc-max31335.c b/drivers/rtc/rtc-max31335.c index 3fbcf5f6b92f..a7bb37aaab9e 100644 --- a/drivers/rtc/rtc-max31335.c +++ b/drivers/rtc/rtc-max31335.c @@ -184,31 +184,91 @@ #define MAX31335_RAM_SIZE 32 #define MAX31335_TIME_SIZE 0x07 +/* MAX31331 Register Map */ +#define MAX31331_RTC_CONFIG2 0x04 + #define clk_hw_to_max31335(_hw) container_of(_hw, struct max31335_data, clkout) +/* Supported Maxim RTC */ +enum max_rtc_ids { + ID_MAX31331, + ID_MAX31335, + MAX_RTC_ID_NR +}; + +struct chip_desc { + u8 sec_reg; + u8 alarm1_sec_reg; + + u8 int_en_reg; + u8 int_status_reg; + + u8 ram_reg; + u8 ram_size; + + u8 temp_reg; + + u8 trickle_reg; + + u8 clkout_reg; + + enum max_rtc_ids id; +}; + struct max31335_data { struct regmap *regmap; struct rtc_device *rtc; struct clk_hw clkout; + struct clk *clkin; + const struct chip_desc *chip; + int irq; }; static const int max31335_clkout_freq[] = { 1, 64, 1024, 32768 }; +static const struct chip_desc chip[MAX_RTC_ID_NR] = { + [ID_MAX31331] = { + .id = ID_MAX31331, + .int_en_reg = 0x01, + .int_status_reg = 0x00, + .sec_reg = 0x08, + .alarm1_sec_reg = 0x0F, + .ram_reg = 0x20, + .ram_size = 32, + .trickle_reg = 0x1B, + .clkout_reg = 0x04, + }, + [ID_MAX31335] = { + .id = ID_MAX31335, + .int_en_reg = 0x01, + .int_status_reg = 0x00, + .sec_reg = 0x0A, + .alarm1_sec_reg = 0x11, + .ram_reg = 0x40, + .ram_size = 32, + .temp_reg = 0x35, + .trickle_reg = 0x1D, + .clkout_reg = 0x06, + }, +}; + static const u16 max31335_trickle_resistors[] = {3000, 6000, 11000}; static bool max31335_volatile_reg(struct device *dev, unsigned int reg) { + struct max31335_data *max31335 = dev_get_drvdata(dev); + const struct chip_desc *chip = max31335->chip; + /* time keeping registers */ - if (reg >= MAX31335_SECONDS && - reg < MAX31335_SECONDS + MAX31335_TIME_SIZE) + if (reg >= chip->sec_reg && reg < chip->sec_reg + MAX31335_TIME_SIZE) return true; /* interrupt status register */ - if (reg == MAX31335_STATUS1) + if (reg == chip->int_status_reg) return true; - /* temperature registers */ - if (reg == MAX31335_TEMP_DATA_MSB || reg == MAX31335_TEMP_DATA_LSB) + /* temperature registers if valid */ + if (chip->temp_reg && (reg == chip->temp_reg || reg == chip->temp_reg + 1)) return true; return false; @@ -227,7 +287,7 @@ static int max31335_read_time(struct device *dev, struct rtc_time *tm) u8 date[7]; int ret; - ret = regmap_bulk_read(max31335->regmap, MAX31335_SECONDS, date, + ret = regmap_bulk_read(max31335->regmap, max31335->chip->sec_reg, date, sizeof(date)); if (ret) return ret; @@ -262,7 +322,7 @@ static int max31335_set_time(struct device *dev, struct rtc_time *tm) if (tm->tm_year >= 200) date[5] |= FIELD_PREP(MAX31335_MONTH_CENTURY, 1); - return regmap_bulk_write(max31335->regmap, MAX31335_SECONDS, date, + return regmap_bulk_write(max31335->regmap, max31335->chip->sec_reg, date, sizeof(date)); } @@ -273,7 +333,7 @@ static int max31335_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) struct rtc_time time; u8 regs[6]; - ret = regmap_bulk_read(max31335->regmap, MAX31335_ALM1_SEC, regs, + ret = regmap_bulk_read(max31335->regmap, max31335->chip->alarm1_sec_reg, regs, sizeof(regs)); if (ret) return ret; @@ -292,11 +352,11 @@ static int max31335_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) if (time.tm_year >= 200) alrm->time.tm_year += 100; - ret = regmap_read(max31335->regmap, MAX31335_INT_EN1, &ctrl); + ret = regmap_read(max31335->regmap, max31335->chip->int_en_reg, &ctrl); if (ret) return ret; - ret = regmap_read(max31335->regmap, MAX31335_STATUS1, &status); + ret = regmap_read(max31335->regmap, max31335->chip->int_status_reg, &status); if (ret) return ret; @@ -320,18 +380,18 @@ static int max31335_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) regs[4] = bin2bcd(alrm->time.tm_mon + 1); regs[5] = bin2bcd(alrm->time.tm_year % 100); - ret = regmap_bulk_write(max31335->regmap, MAX31335_ALM1_SEC, + ret = regmap_bulk_write(max31335->regmap, max31335->chip->alarm1_sec_reg, regs, sizeof(regs)); if (ret) return ret; reg = FIELD_PREP(MAX31335_INT_EN1_A1IE, alrm->enabled); - ret = regmap_update_bits(max31335->regmap, MAX31335_INT_EN1, + ret = regmap_update_bits(max31335->regmap, max31335->chip->int_en_reg, MAX31335_INT_EN1_A1IE, reg); if (ret) return ret; - ret = regmap_update_bits(max31335->regmap, MAX31335_STATUS1, + ret = regmap_update_bits(max31335->regmap, max31335->chip->int_status_reg, MAX31335_STATUS1_A1F, 0); return 0; @@ -341,23 +401,33 @@ static int max31335_alarm_irq_enable(struct device *dev, unsigned int enabled) { struct max31335_data *max31335 = dev_get_drvdata(dev); - return regmap_update_bits(max31335->regmap, MAX31335_INT_EN1, + return regmap_update_bits(max31335->regmap, max31335->chip->int_en_reg, MAX31335_INT_EN1_A1IE, enabled); } static irqreturn_t max31335_handle_irq(int irq, void *dev_id) { struct max31335_data *max31335 = dev_id; - bool status; - int ret; + struct mutex *lock = &max31335->rtc->ops_lock; + int ret, status; - ret = regmap_update_bits_check(max31335->regmap, MAX31335_STATUS1, - MAX31335_STATUS1_A1F, 0, &status); + mutex_lock(lock); + + ret = regmap_read(max31335->regmap, max31335->chip->int_status_reg, &status); if (ret) - return IRQ_HANDLED; + goto exit; + + if (FIELD_GET(MAX31335_STATUS1_A1F, status)) { + ret = regmap_update_bits(max31335->regmap, max31335->chip->int_status_reg, + MAX31335_STATUS1_A1F, 0); + if (ret) + goto exit; - if (status) rtc_update_irq(max31335->rtc, 1, RTC_AF | RTC_IRQF); + } + +exit: + mutex_unlock(lock); return IRQ_HANDLED; } @@ -404,7 +474,7 @@ static int max31335_trickle_charger_setup(struct device *dev, i = i + trickle_cfg; - return regmap_write(max31335->regmap, MAX31335_TRICKLE_REG, + return regmap_write(max31335->regmap, max31335->chip->trickle_reg, FIELD_PREP(MAX31335_TRICKLE_REG_TRICKLE, i) | FIELD_PREP(MAX31335_TRICKLE_REG_EN_TRICKLE, chargeable)); @@ -418,7 +488,7 @@ static unsigned long max31335_clkout_recalc_rate(struct clk_hw *hw, unsigned int reg; int ret; - ret = regmap_read(max31335->regmap, MAX31335_RTC_CONFIG2, ®); + ret = regmap_read(max31335->regmap, max31335->chip->clkout_reg, ®); if (ret) return 0; @@ -449,23 +519,23 @@ static int max31335_clkout_set_rate(struct clk_hw *hw, unsigned long rate, ARRAY_SIZE(max31335_clkout_freq)); freq_mask = __roundup_pow_of_two(ARRAY_SIZE(max31335_clkout_freq)) - 1; - return regmap_update_bits(max31335->regmap, MAX31335_RTC_CONFIG2, - freq_mask, index); + return regmap_update_bits(max31335->regmap, max31335->chip->clkout_reg, + freq_mask, index); } static int max31335_clkout_enable(struct clk_hw *hw) { struct max31335_data *max31335 = clk_hw_to_max31335(hw); - return regmap_set_bits(max31335->regmap, MAX31335_RTC_CONFIG2, - MAX31335_RTC_CONFIG2_ENCLKO); + return regmap_set_bits(max31335->regmap, max31335->chip->clkout_reg, + MAX31335_RTC_CONFIG2_ENCLKO); } static void max31335_clkout_disable(struct clk_hw *hw) { struct max31335_data *max31335 = clk_hw_to_max31335(hw); - regmap_clear_bits(max31335->regmap, MAX31335_RTC_CONFIG2, + regmap_clear_bits(max31335->regmap, max31335->chip->clkout_reg, MAX31335_RTC_CONFIG2_ENCLKO); } @@ -475,7 +545,7 @@ static int max31335_clkout_is_enabled(struct clk_hw *hw) unsigned int reg; int ret; - ret = regmap_read(max31335->regmap, MAX31335_RTC_CONFIG2, ®); + ret = regmap_read(max31335->regmap, max31335->chip->clkout_reg, ®); if (ret) return ret; @@ -500,7 +570,7 @@ static int max31335_nvmem_reg_read(void *priv, unsigned int offset, void *val, size_t bytes) { struct max31335_data *max31335 = priv; - unsigned int reg = MAX31335_TS0_SEC_1_128 + offset; + unsigned int reg = max31335->chip->ram_reg + offset; return regmap_bulk_read(max31335->regmap, reg, val, bytes); } @@ -509,7 +579,7 @@ static int max31335_nvmem_reg_write(void *priv, unsigned int offset, void *val, size_t bytes) { struct max31335_data *max31335 = priv; - unsigned int reg = MAX31335_TS0_SEC_1_128 + offset; + unsigned int reg = max31335->chip->ram_reg + offset; return regmap_bulk_write(max31335->regmap, reg, val, bytes); } @@ -533,7 +603,7 @@ static int max31335_read_temp(struct device *dev, enum hwmon_sensor_types type, if (type != hwmon_temp || attr != hwmon_temp_input) return -EOPNOTSUPP; - ret = regmap_bulk_read(max31335->regmap, MAX31335_TEMP_DATA_MSB, + ret = regmap_bulk_read(max31335->regmap, max31335->chip->temp_reg, reg, 2); if (ret) return ret; @@ -577,8 +647,8 @@ static int max31335_clkout_register(struct device *dev) int ret; if (!device_property_present(dev, "#clock-cells")) - return regmap_clear_bits(max31335->regmap, MAX31335_RTC_CONFIG2, - MAX31335_RTC_CONFIG2_ENCLKO); + return regmap_clear_bits(max31335->regmap, max31335->chip->clkout_reg, + MAX31335_RTC_CONFIG2_ENCLKO); max31335->clkout.init = &max31335_clk_init; @@ -605,6 +675,7 @@ static int max31335_probe(struct i2c_client *client) #if IS_REACHABLE(HWMON) struct device *hwmon; #endif + const struct chip_desc *match; int ret; max31335 = devm_kzalloc(&client->dev, sizeof(*max31335), GFP_KERNEL); @@ -616,7 +687,10 @@ static int max31335_probe(struct i2c_client *client) return PTR_ERR(max31335->regmap); i2c_set_clientdata(client, max31335); - + match = i2c_get_match_data(client); + if (!match) + return -ENODEV; + max31335->chip = match; max31335->rtc = devm_rtc_allocate_device(&client->dev); if (IS_ERR(max31335->rtc)) return PTR_ERR(max31335->rtc); @@ -639,6 +713,8 @@ static int max31335_probe(struct i2c_client *client) dev_warn(&client->dev, "unable to request IRQ, alarm max31335 disabled\n"); client->irq = 0; + } else { + max31335->irq = client->irq; } } @@ -652,13 +728,13 @@ static int max31335_probe(struct i2c_client *client) "cannot register rtc nvmem\n"); #if IS_REACHABLE(HWMON) - hwmon = devm_hwmon_device_register_with_info(&client->dev, client->name, - max31335, - &max31335_chip_info, - NULL); - if (IS_ERR(hwmon)) - return dev_err_probe(&client->dev, PTR_ERR(hwmon), - "cannot register hwmon device\n"); + if (max31335->chip->temp_reg) { + hwmon = devm_hwmon_device_register_with_info(&client->dev, client->name, max31335, + &max31335_chip_info, NULL); + if (IS_ERR(hwmon)) + return dev_err_probe(&client->dev, PTR_ERR(hwmon), + "cannot register hwmon device\n"); + } #endif ret = max31335_trickle_charger_setup(&client->dev, max31335); @@ -669,14 +745,16 @@ static int max31335_probe(struct i2c_client *client) } static const struct i2c_device_id max31335_id[] = { - { "max31335" }, + { "max31331", (kernel_ulong_t)&chip[ID_MAX31331] }, + { "max31335", (kernel_ulong_t)&chip[ID_MAX31335] }, { } }; MODULE_DEVICE_TABLE(i2c, max31335_id); static const struct of_device_id max31335_of_match[] = { - { .compatible = "adi,max31335" }, + { .compatible = "adi,max31331", .data = &chip[ID_MAX31331] }, + { .compatible = "adi,max31335", .data = &chip[ID_MAX31335] }, { } }; @@ -693,5 +771,6 @@ static struct i2c_driver max31335_driver = { module_i2c_driver(max31335_driver); MODULE_AUTHOR("Antoniu Miclaus <antoniu.miclaus@analog.com>"); +MODULE_AUTHOR("Saket Kumar Purwar <Saket.Kumarpurwar@analog.com>"); MODULE_DESCRIPTION("MAX31335 RTC driver"); MODULE_LICENSE("GPL"); diff --git a/drivers/rtc/rtc-max77686.c b/drivers/rtc/rtc-max77686.c index 7bb044d2ac25..69ea3ce75b5a 100644 --- a/drivers/rtc/rtc-max77686.c +++ b/drivers/rtc/rtc-max77686.c @@ -85,7 +85,6 @@ struct max77686_rtc_driver_data { struct max77686_rtc_info { struct device *dev; - struct i2c_client *rtc; struct rtc_device *rtc_dev; struct mutex lock; @@ -691,6 +690,7 @@ static int max77686_init_rtc_regmap(struct max77686_rtc_info *info) { struct device *parent = info->dev->parent; struct i2c_client *parent_i2c = to_i2c_client(parent); + struct i2c_client *client; int ret; if (info->drv_data->rtc_irq_from_platform) { @@ -704,40 +704,35 @@ static int max77686_init_rtc_regmap(struct max77686_rtc_info *info) } info->regmap = dev_get_regmap(parent, NULL); - if (!info->regmap) { - dev_err(info->dev, "Failed to get rtc regmap\n"); - return -ENODEV; - } + if (!info->regmap) + return dev_err_probe(info->dev, -ENODEV, + "Failed to get rtc regmap\n"); if (info->drv_data->rtc_i2c_addr == MAX77686_INVALID_I2C_ADDR) { info->rtc_regmap = info->regmap; goto add_rtc_irq; } - info->rtc = devm_i2c_new_dummy_device(info->dev, parent_i2c->adapter, - info->drv_data->rtc_i2c_addr); - if (IS_ERR(info->rtc)) { - dev_err(info->dev, "Failed to allocate I2C device for RTC\n"); - return PTR_ERR(info->rtc); - } + client = devm_i2c_new_dummy_device(info->dev, parent_i2c->adapter, + info->drv_data->rtc_i2c_addr); + if (IS_ERR(client)) + return dev_err_probe(info->dev, PTR_ERR(client), + "Failed to allocate I2C device for RTC\n"); - info->rtc_regmap = devm_regmap_init_i2c(info->rtc, + info->rtc_regmap = devm_regmap_init_i2c(client, info->drv_data->regmap_config); - if (IS_ERR(info->rtc_regmap)) { - ret = PTR_ERR(info->rtc_regmap); - dev_err(info->dev, "Failed to allocate RTC regmap: %d\n", ret); - return ret; - } + if (IS_ERR(info->rtc_regmap)) + return dev_err_probe(info->dev, PTR_ERR(info->rtc_regmap), + "Failed to allocate RTC regmap\n"); add_rtc_irq: ret = regmap_add_irq_chip(info->rtc_regmap, info->rtc_irq, IRQF_ONESHOT | IRQF_SHARED, 0, info->drv_data->rtc_irq_chip, &info->rtc_irq_data); - if (ret < 0) { - dev_err(info->dev, "Failed to add RTC irq chip: %d\n", ret); - return ret; - } + if (ret < 0) + return dev_err_probe(info->dev, ret, + "Failed to add RTC irq chip\n"); return 0; } diff --git a/drivers/rtc/rtc-meson-vrtc.c b/drivers/rtc/rtc-meson-vrtc.c index 5849729f7d01..7d38258cbe37 100644 --- a/drivers/rtc/rtc-meson-vrtc.c +++ b/drivers/rtc/rtc-meson-vrtc.c @@ -13,7 +13,6 @@ struct meson_vrtc_data { void __iomem *io_alarm; - struct rtc_device *rtc; unsigned long alarm_time; bool enabled; }; @@ -65,6 +64,7 @@ static const struct rtc_class_ops meson_vrtc_ops = { static int meson_vrtc_probe(struct platform_device *pdev) { struct meson_vrtc_data *vrtc; + struct rtc_device *rtc; vrtc = devm_kzalloc(&pdev->dev, sizeof(*vrtc), GFP_KERNEL); if (!vrtc) @@ -78,12 +78,12 @@ static int meson_vrtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, vrtc); - vrtc->rtc = devm_rtc_allocate_device(&pdev->dev); - if (IS_ERR(vrtc->rtc)) - return PTR_ERR(vrtc->rtc); + rtc = devm_rtc_allocate_device(&pdev->dev); + if (IS_ERR(rtc)) + return PTR_ERR(rtc); - vrtc->rtc->ops = &meson_vrtc_ops; - return devm_rtc_register_device(vrtc->rtc); + rtc->ops = &meson_vrtc_ops; + return devm_rtc_register_device(rtc); } static int __maybe_unused meson_vrtc_suspend(struct device *dev) diff --git a/drivers/rtc/rtc-meson.c b/drivers/rtc/rtc-meson.c index db1d626edca5..47e9ebf58ffc 100644 --- a/drivers/rtc/rtc-meson.c +++ b/drivers/rtc/rtc-meson.c @@ -59,7 +59,6 @@ #define MESON_STATIC_DEFAULT (MESON_STATIC_BIAS_CUR | MESON_STATIC_VOLTAGE) struct meson_rtc { - struct rtc_device *rtc; /* rtc device we created */ struct device *dev; /* device we bound from */ struct reset_control *reset; /* reset source */ struct regulator *vdd; /* voltage input */ @@ -292,6 +291,7 @@ static int meson_rtc_probe(struct platform_device *pdev) }; struct device *dev = &pdev->dev; struct meson_rtc *rtc; + struct rtc_device *rtc_dev; void __iomem *base; int ret; u32 tm; @@ -300,16 +300,16 @@ static int meson_rtc_probe(struct platform_device *pdev) if (!rtc) return -ENOMEM; - rtc->rtc = devm_rtc_allocate_device(dev); - if (IS_ERR(rtc->rtc)) - return PTR_ERR(rtc->rtc); + rtc_dev = devm_rtc_allocate_device(dev); + if (IS_ERR(rtc_dev)) + return PTR_ERR(rtc_dev); platform_set_drvdata(pdev, rtc); rtc->dev = dev; - rtc->rtc->ops = &meson_rtc_ops; - rtc->rtc->range_max = U32_MAX; + rtc_dev->ops = &meson_rtc_ops; + rtc_dev->range_max = U32_MAX; base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(base)) @@ -365,11 +365,11 @@ static int meson_rtc_probe(struct platform_device *pdev) } meson_rtc_nvmem_config.priv = rtc; - ret = devm_rtc_nvmem_register(rtc->rtc, &meson_rtc_nvmem_config); + ret = devm_rtc_nvmem_register(rtc_dev, &meson_rtc_nvmem_config); if (ret) goto out_disable_vdd; - ret = devm_rtc_register_device(rtc->rtc); + ret = devm_rtc_register_device(rtc_dev); if (ret) goto out_disable_vdd; diff --git a/drivers/rtc/rtc-mpfs.c b/drivers/rtc/rtc-mpfs.c index 3892b0f9917f..6aa3eae575d2 100644 --- a/drivers/rtc/rtc-mpfs.c +++ b/drivers/rtc/rtc-mpfs.c @@ -266,19 +266,14 @@ static int mpfs_rtc_probe(struct platform_device *pdev) writel(prescaler, rtcdev->base + PRESCALER_REG); dev_info(&pdev->dev, "prescaler set to: %lu\n", prescaler); - device_init_wakeup(&pdev->dev, true); - ret = dev_pm_set_wake_irq(&pdev->dev, wakeup_irq); + devm_device_init_wakeup(&pdev->dev); + ret = devm_pm_set_wake_irq(&pdev->dev, wakeup_irq); if (ret) dev_err(&pdev->dev, "failed to enable irq wake\n"); return devm_rtc_register_device(rtcdev->rtc); } -static void mpfs_rtc_remove(struct platform_device *pdev) -{ - dev_pm_clear_wake_irq(&pdev->dev); -} - static const struct of_device_id mpfs_rtc_of_match[] = { { .compatible = "microchip,mpfs-rtc" }, { } @@ -288,7 +283,6 @@ MODULE_DEVICE_TABLE(of, mpfs_rtc_of_match); static struct platform_driver mpfs_rtc_driver = { .probe = mpfs_rtc_probe, - .remove = mpfs_rtc_remove, .driver = { .name = "mpfs_rtc", .of_match_table = mpfs_rtc_of_match, diff --git a/drivers/rtc/rtc-nxp-bbnsm.c b/drivers/rtc/rtc-nxp-bbnsm.c index fa3b0328c7a2..d4fc9dc583d3 100644 --- a/drivers/rtc/rtc-nxp-bbnsm.c +++ b/drivers/rtc/rtc-nxp-bbnsm.c @@ -189,36 +189,26 @@ static int bbnsm_rtc_probe(struct platform_device *pdev) /* clear all the pending events */ regmap_write(bbnsm->regmap, BBNSM_EVENTS, 0x7A); - device_init_wakeup(&pdev->dev, true); - dev_pm_set_wake_irq(&pdev->dev, bbnsm->irq); + ret = devm_device_init_wakeup(&pdev->dev); + if (ret) + dev_err(&pdev->dev, "failed to init wakeup, %d\n", ret); + + ret = devm_pm_set_wake_irq(&pdev->dev, bbnsm->irq); + if (ret) + dev_err(&pdev->dev, "failed to set wake irq, %d\n", ret); ret = devm_request_irq(&pdev->dev, bbnsm->irq, bbnsm_rtc_irq_handler, IRQF_SHARED, "rtc alarm", &pdev->dev); if (ret) { dev_err(&pdev->dev, "failed to request irq %d: %d\n", bbnsm->irq, ret); - goto err; + return ret; } bbnsm->rtc->ops = &bbnsm_rtc_ops; bbnsm->rtc->range_max = U32_MAX; - ret = devm_rtc_register_device(bbnsm->rtc); - if (ret) - goto err; - - return 0; - -err: - dev_pm_clear_wake_irq(&pdev->dev); - device_init_wakeup(&pdev->dev, false); - return ret; -} - -static void bbnsm_rtc_remove(struct platform_device *pdev) -{ - dev_pm_clear_wake_irq(&pdev->dev); - device_init_wakeup(&pdev->dev, false); + return devm_rtc_register_device(bbnsm->rtc); } static const struct of_device_id bbnsm_dt_ids[] = { @@ -233,7 +223,6 @@ static struct platform_driver bbnsm_rtc_driver = { .of_match_table = bbnsm_dt_ids, }, .probe = bbnsm_rtc_probe, - .remove = bbnsm_rtc_remove, }; module_platform_driver(bbnsm_rtc_driver); diff --git a/drivers/rtc/rtc-pcf50633.c b/drivers/rtc/rtc-pcf50633.c deleted file mode 100644 index c019c4d91c7d..000000000000 --- a/drivers/rtc/rtc-pcf50633.c +++ /dev/null @@ -1,284 +0,0 @@ -// SPDX-License-Identifier: GPL-2.0-or-later -/* NXP PCF50633 RTC Driver - * - * (C) 2006-2008 by Openmoko, Inc. - * Author: Balaji Rao <balajirrao@openmoko.org> - * All rights reserved. - * - * Broken down from monstrous PCF50633 driver mainly by - * Harald Welte, Andy Green and Werner Almesberger - */ - -#include <linux/kernel.h> -#include <linux/module.h> -#include <linux/init.h> -#include <linux/device.h> -#include <linux/slab.h> -#include <linux/platform_device.h> -#include <linux/rtc.h> -#include <linux/bcd.h> -#include <linux/err.h> - -#include <linux/mfd/pcf50633/core.h> - -#define PCF50633_REG_RTCSC 0x59 /* Second */ -#define PCF50633_REG_RTCMN 0x5a /* Minute */ -#define PCF50633_REG_RTCHR 0x5b /* Hour */ -#define PCF50633_REG_RTCWD 0x5c /* Weekday */ -#define PCF50633_REG_RTCDT 0x5d /* Day */ -#define PCF50633_REG_RTCMT 0x5e /* Month */ -#define PCF50633_REG_RTCYR 0x5f /* Year */ -#define PCF50633_REG_RTCSCA 0x60 /* Alarm Second */ -#define PCF50633_REG_RTCMNA 0x61 /* Alarm Minute */ -#define PCF50633_REG_RTCHRA 0x62 /* Alarm Hour */ -#define PCF50633_REG_RTCWDA 0x63 /* Alarm Weekday */ -#define PCF50633_REG_RTCDTA 0x64 /* Alarm Day */ -#define PCF50633_REG_RTCMTA 0x65 /* Alarm Month */ -#define PCF50633_REG_RTCYRA 0x66 /* Alarm Year */ - -enum pcf50633_time_indexes { - PCF50633_TI_SEC, - PCF50633_TI_MIN, - PCF50633_TI_HOUR, - PCF50633_TI_WKDAY, - PCF50633_TI_DAY, - PCF50633_TI_MONTH, - PCF50633_TI_YEAR, - PCF50633_TI_EXTENT /* always last */ -}; - -struct pcf50633_time { - u_int8_t time[PCF50633_TI_EXTENT]; -}; - -struct pcf50633_rtc { - int alarm_enabled; - int alarm_pending; - - struct pcf50633 *pcf; - struct rtc_device *rtc_dev; -}; - -static void pcf2rtc_time(struct rtc_time *rtc, struct pcf50633_time *pcf) -{ - rtc->tm_sec = bcd2bin(pcf->time[PCF50633_TI_SEC]); - rtc->tm_min = bcd2bin(pcf->time[PCF50633_TI_MIN]); - rtc->tm_hour = bcd2bin(pcf->time[PCF50633_TI_HOUR]); - rtc->tm_wday = bcd2bin(pcf->time[PCF50633_TI_WKDAY]); - rtc->tm_mday = bcd2bin(pcf->time[PCF50633_TI_DAY]); - rtc->tm_mon = bcd2bin(pcf->time[PCF50633_TI_MONTH]) - 1; - rtc->tm_year = bcd2bin(pcf->time[PCF50633_TI_YEAR]) + 100; -} - -static void rtc2pcf_time(struct pcf50633_time *pcf, struct rtc_time *rtc) -{ - pcf->time[PCF50633_TI_SEC] = bin2bcd(rtc->tm_sec); - pcf->time[PCF50633_TI_MIN] = bin2bcd(rtc->tm_min); - pcf->time[PCF50633_TI_HOUR] = bin2bcd(rtc->tm_hour); - pcf->time[PCF50633_TI_WKDAY] = bin2bcd(rtc->tm_wday); - pcf->time[PCF50633_TI_DAY] = bin2bcd(rtc->tm_mday); - pcf->time[PCF50633_TI_MONTH] = bin2bcd(rtc->tm_mon + 1); - pcf->time[PCF50633_TI_YEAR] = bin2bcd(rtc->tm_year % 100); -} - -static int -pcf50633_rtc_alarm_irq_enable(struct device *dev, unsigned int enabled) -{ - struct pcf50633_rtc *rtc = dev_get_drvdata(dev); - int err; - - if (enabled) - err = pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM); - else - err = pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM); - - if (err < 0) - return err; - - rtc->alarm_enabled = enabled; - - return 0; -} - -static int pcf50633_rtc_read_time(struct device *dev, struct rtc_time *tm) -{ - struct pcf50633_rtc *rtc; - struct pcf50633_time pcf_tm; - int ret; - - rtc = dev_get_drvdata(dev); - - ret = pcf50633_read_block(rtc->pcf, PCF50633_REG_RTCSC, - PCF50633_TI_EXTENT, - &pcf_tm.time[0]); - if (ret != PCF50633_TI_EXTENT) { - dev_err(dev, "Failed to read time\n"); - return -EIO; - } - - dev_dbg(dev, "PCF_TIME: %02x.%02x.%02x %02x:%02x:%02x\n", - pcf_tm.time[PCF50633_TI_DAY], - pcf_tm.time[PCF50633_TI_MONTH], - pcf_tm.time[PCF50633_TI_YEAR], - pcf_tm.time[PCF50633_TI_HOUR], - pcf_tm.time[PCF50633_TI_MIN], - pcf_tm.time[PCF50633_TI_SEC]); - - pcf2rtc_time(tm, &pcf_tm); - - dev_dbg(dev, "RTC_TIME: %ptRr\n", tm); - - return 0; -} - -static int pcf50633_rtc_set_time(struct device *dev, struct rtc_time *tm) -{ - struct pcf50633_rtc *rtc; - struct pcf50633_time pcf_tm; - int alarm_masked, ret = 0; - - rtc = dev_get_drvdata(dev); - - dev_dbg(dev, "RTC_TIME: %ptRr\n", tm); - - rtc2pcf_time(&pcf_tm, tm); - - dev_dbg(dev, "PCF_TIME: %02x.%02x.%02x %02x:%02x:%02x\n", - pcf_tm.time[PCF50633_TI_DAY], - pcf_tm.time[PCF50633_TI_MONTH], - pcf_tm.time[PCF50633_TI_YEAR], - pcf_tm.time[PCF50633_TI_HOUR], - pcf_tm.time[PCF50633_TI_MIN], - pcf_tm.time[PCF50633_TI_SEC]); - - - alarm_masked = pcf50633_irq_mask_get(rtc->pcf, PCF50633_IRQ_ALARM); - - if (!alarm_masked) - pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM); - - /* Returns 0 on success */ - ret = pcf50633_write_block(rtc->pcf, PCF50633_REG_RTCSC, - PCF50633_TI_EXTENT, - &pcf_tm.time[0]); - - if (!alarm_masked) - pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM); - - return ret; -} - -static int pcf50633_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) -{ - struct pcf50633_rtc *rtc; - struct pcf50633_time pcf_tm; - int ret = 0; - - rtc = dev_get_drvdata(dev); - - alrm->enabled = rtc->alarm_enabled; - alrm->pending = rtc->alarm_pending; - - ret = pcf50633_read_block(rtc->pcf, PCF50633_REG_RTCSCA, - PCF50633_TI_EXTENT, &pcf_tm.time[0]); - if (ret != PCF50633_TI_EXTENT) { - dev_err(dev, "Failed to read time\n"); - return -EIO; - } - - pcf2rtc_time(&alrm->time, &pcf_tm); - - return rtc_valid_tm(&alrm->time); -} - -static int pcf50633_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) -{ - struct pcf50633_rtc *rtc; - struct pcf50633_time pcf_tm; - int alarm_masked, ret = 0; - - rtc = dev_get_drvdata(dev); - - rtc2pcf_time(&pcf_tm, &alrm->time); - - /* do like mktime does and ignore tm_wday */ - pcf_tm.time[PCF50633_TI_WKDAY] = 7; - - alarm_masked = pcf50633_irq_mask_get(rtc->pcf, PCF50633_IRQ_ALARM); - - /* disable alarm interrupt */ - if (!alarm_masked) - pcf50633_irq_mask(rtc->pcf, PCF50633_IRQ_ALARM); - - /* Returns 0 on success */ - ret = pcf50633_write_block(rtc->pcf, PCF50633_REG_RTCSCA, - PCF50633_TI_EXTENT, &pcf_tm.time[0]); - if (!alrm->enabled) - rtc->alarm_pending = 0; - - if (!alarm_masked || alrm->enabled) - pcf50633_irq_unmask(rtc->pcf, PCF50633_IRQ_ALARM); - rtc->alarm_enabled = alrm->enabled; - - return ret; -} - -static const struct rtc_class_ops pcf50633_rtc_ops = { - .read_time = pcf50633_rtc_read_time, - .set_time = pcf50633_rtc_set_time, - .read_alarm = pcf50633_rtc_read_alarm, - .set_alarm = pcf50633_rtc_set_alarm, - .alarm_irq_enable = pcf50633_rtc_alarm_irq_enable, -}; - -static void pcf50633_rtc_irq(int irq, void *data) -{ - struct pcf50633_rtc *rtc = data; - - rtc_update_irq(rtc->rtc_dev, 1, RTC_AF | RTC_IRQF); - rtc->alarm_pending = 1; -} - -static int pcf50633_rtc_probe(struct platform_device *pdev) -{ - struct pcf50633_rtc *rtc; - - rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL); - if (!rtc) - return -ENOMEM; - - rtc->pcf = dev_to_pcf50633(pdev->dev.parent); - platform_set_drvdata(pdev, rtc); - rtc->rtc_dev = devm_rtc_device_register(&pdev->dev, "pcf50633-rtc", - &pcf50633_rtc_ops, THIS_MODULE); - - if (IS_ERR(rtc->rtc_dev)) - return PTR_ERR(rtc->rtc_dev); - - pcf50633_register_irq(rtc->pcf, PCF50633_IRQ_ALARM, - pcf50633_rtc_irq, rtc); - return 0; -} - -static void pcf50633_rtc_remove(struct platform_device *pdev) -{ - struct pcf50633_rtc *rtc; - - rtc = platform_get_drvdata(pdev); - pcf50633_free_irq(rtc->pcf, PCF50633_IRQ_ALARM); -} - -static struct platform_driver pcf50633_rtc_driver = { - .driver = { - .name = "pcf50633-rtc", - }, - .probe = pcf50633_rtc_probe, - .remove = pcf50633_rtc_remove, -}; - -module_platform_driver(pcf50633_rtc_driver); - -MODULE_DESCRIPTION("PCF50633 RTC driver"); -MODULE_AUTHOR("Balaji Rao <balajirrao@openmoko.org>"); -MODULE_LICENSE("GPL"); - diff --git a/drivers/rtc/rtc-pcf85063.c b/drivers/rtc/rtc-pcf85063.c index 905986c61655..4fa5c4ecdd5a 100644 --- a/drivers/rtc/rtc-pcf85063.c +++ b/drivers/rtc/rtc-pcf85063.c @@ -35,6 +35,7 @@ #define PCF85063_REG_CTRL1_CAP_SEL BIT(0) #define PCF85063_REG_CTRL1_STOP BIT(5) #define PCF85063_REG_CTRL1_EXT_TEST BIT(7) +#define PCF85063_REG_CTRL1_SWR 0x58 #define PCF85063_REG_CTRL2 0x01 #define PCF85063_CTRL2_AF BIT(6) @@ -589,16 +590,30 @@ static int pcf85063_probe(struct i2c_client *client) i2c_set_clientdata(client, pcf85063); - err = regmap_read(pcf85063->regmap, PCF85063_REG_CTRL1, &tmp); - if (err) { - dev_err(&client->dev, "RTC chip is not present\n"); - return err; - } + err = regmap_read(pcf85063->regmap, PCF85063_REG_SC, &tmp); + if (err) + return dev_err_probe(&client->dev, err, "RTC chip is not present\n"); pcf85063->rtc = devm_rtc_allocate_device(&client->dev); if (IS_ERR(pcf85063->rtc)) return PTR_ERR(pcf85063->rtc); + /* + * If a Power loss is detected, SW reset the device. + * From PCF85063A datasheet: + * There is a low probability that some devices will have corruption + * of the registers after the automatic power-on reset... + */ + if (tmp & PCF85063_REG_SC_OS) { + dev_warn(&client->dev, + "POR issue detected, sending a SW reset\n"); + err = regmap_write(pcf85063->regmap, PCF85063_REG_CTRL1, + PCF85063_REG_CTRL1_SWR); + if (err < 0) + dev_warn(&client->dev, + "SW reset failed, trying to continue\n"); + } + err = pcf85063_load_capacitance(pcf85063, client->dev.of_node, config->force_cap_7000 ? 7000 : 0); if (err < 0) diff --git a/drivers/rtc/rtc-pl030.c b/drivers/rtc/rtc-pl030.c index 39038c0754ee..5caaa714f448 100644 --- a/drivers/rtc/rtc-pl030.c +++ b/drivers/rtc/rtc-pl030.c @@ -21,7 +21,6 @@ #define RTC_CR_MIE (1 << 0) struct pl030_rtc { - struct rtc_device *rtc; void __iomem *base; }; @@ -86,6 +85,7 @@ static int pl030_probe(struct amba_device *dev, const struct amba_id *id) { struct pl030_rtc *rtc; int ret; + struct rtc_device *rtc_dev; ret = amba_request_regions(dev, NULL); if (ret) @@ -97,14 +97,14 @@ static int pl030_probe(struct amba_device *dev, const struct amba_id *id) goto err_rtc; } - rtc->rtc = devm_rtc_allocate_device(&dev->dev); - if (IS_ERR(rtc->rtc)) { - ret = PTR_ERR(rtc->rtc); + rtc_dev = devm_rtc_allocate_device(&dev->dev); + if (IS_ERR(rtc_dev)) { + ret = PTR_ERR(rtc_dev); goto err_rtc; } - rtc->rtc->ops = &pl030_ops; - rtc->rtc->range_max = U32_MAX; + rtc_dev->ops = &pl030_ops; + rtc_dev->range_max = U32_MAX; rtc->base = ioremap(dev->res.start, resource_size(&dev->res)); if (!rtc->base) { ret = -ENOMEM; @@ -121,7 +121,7 @@ static int pl030_probe(struct amba_device *dev, const struct amba_id *id) if (ret) goto err_irq; - ret = devm_rtc_register_device(rtc->rtc); + ret = devm_rtc_register_device(rtc_dev); if (ret) goto err_reg; @@ -148,7 +148,7 @@ static void pl030_remove(struct amba_device *dev) amba_release_regions(dev); } -static struct amba_id pl030_ids[] = { +static const struct amba_id pl030_ids[] = { { .id = 0x00041030, .mask = 0x000fffff, diff --git a/drivers/rtc/rtc-pl031.c b/drivers/rtc/rtc-pl031.c index bad6a5d9c683..eab39dfa4e5f 100644 --- a/drivers/rtc/rtc-pl031.c +++ b/drivers/rtc/rtc-pl031.c @@ -74,6 +74,8 @@ * @st_weekday: if this is an ST Microelectronics silicon version that need * the weekday fix * @irqflags: special IRQ flags per variant + * @range_min: minimum date/time supported by the RTC + * @range_max: maximum date/time supported by the RTC */ struct pl031_vendor_data { struct rtc_class_ops ops; @@ -284,8 +286,6 @@ static void pl031_remove(struct amba_device *adev) { struct pl031_local *ldata = dev_get_drvdata(&adev->dev); - dev_pm_clear_wake_irq(&adev->dev); - device_init_wakeup(&adev->dev, false); if (adev->irq[0]) free_irq(adev->irq[0], ldata); amba_release_regions(adev); @@ -350,7 +350,7 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id) } } - device_init_wakeup(&adev->dev, true); + devm_device_init_wakeup(&adev->dev); ldata->rtc = devm_rtc_allocate_device(&adev->dev); if (IS_ERR(ldata->rtc)) { ret = PTR_ERR(ldata->rtc); @@ -373,7 +373,7 @@ static int pl031_probe(struct amba_device *adev, const struct amba_id *id) vendor->irqflags, "rtc-pl031", ldata); if (ret) goto out; - dev_pm_set_wake_irq(&adev->dev, adev->irq[0]); + devm_pm_set_wake_irq(&adev->dev, adev->irq[0]); } return 0; diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c index b2518aea4218..3c1dddcc81df 100644 --- a/drivers/rtc/rtc-pm8xxx.c +++ b/drivers/rtc/rtc-pm8xxx.c @@ -5,6 +5,7 @@ * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved. * Copyright (c) 2023, Linaro Limited */ +#include <linux/efi.h> #include <linux/of.h> #include <linux/module.h> #include <linux/nvmem-consumer.h> @@ -16,9 +17,10 @@ #include <linux/regmap.h> #include <linux/slab.h> #include <linux/spinlock.h> - #include <linux/unaligned.h> +#include <asm/byteorder.h> + /* RTC_CTRL register bit fields */ #define PM8xxx_RTC_ENABLE BIT(7) #define PM8xxx_RTC_ALARM_CLEAR BIT(0) @@ -46,28 +48,125 @@ struct pm8xxx_rtc_regs { unsigned int alarm_en; }; +struct qcom_uefi_rtc_info { + __le32 offset_gps; + u8 reserved[8]; +} __packed; + /** * struct pm8xxx_rtc - RTC driver internal structure * @rtc: RTC device * @regmap: regmap used to access registers * @allow_set_time: whether the time can be set + * @use_uefi: use UEFI variable as fallback for offset * @alarm_irq: alarm irq number * @regs: register description * @dev: device structure + * @rtc_info: qcom uefi rtc-info structure * @nvmem_cell: nvmem cell for offset * @offset: offset from epoch in seconds + * @offset_dirty: offset needs to be stored on shutdown */ struct pm8xxx_rtc { struct rtc_device *rtc; struct regmap *regmap; bool allow_set_time; + bool use_uefi; int alarm_irq; const struct pm8xxx_rtc_regs *regs; struct device *dev; + struct qcom_uefi_rtc_info rtc_info; struct nvmem_cell *nvmem_cell; u32 offset; + bool offset_dirty; }; +#ifdef CONFIG_EFI + +MODULE_IMPORT_NS("EFIVAR"); + +#define QCOM_UEFI_NAME L"RTCInfo" +#define QCOM_UEFI_GUID EFI_GUID(0x882f8c2b, 0x9646, 0x435f, \ + 0x8d, 0xe5, 0xf2, 0x08, 0xff, 0x80, 0xc1, 0xbd) +#define QCOM_UEFI_ATTRS (EFI_VARIABLE_NON_VOLATILE | \ + EFI_VARIABLE_BOOTSERVICE_ACCESS | \ + EFI_VARIABLE_RUNTIME_ACCESS) + +static int pm8xxx_rtc_read_uefi_offset(struct pm8xxx_rtc *rtc_dd) +{ + struct qcom_uefi_rtc_info *rtc_info = &rtc_dd->rtc_info; + unsigned long size = sizeof(*rtc_info); + struct device *dev = rtc_dd->dev; + efi_status_t status; + u32 offset_gps; + int rc; + + rc = efivar_lock(); + if (rc) + return rc; + + status = efivar_get_variable(QCOM_UEFI_NAME, &QCOM_UEFI_GUID, NULL, + &size, rtc_info); + efivar_unlock(); + + if (status != EFI_SUCCESS) { + dev_dbg(dev, "failed to read UEFI offset: %lu\n", status); + return efi_status_to_err(status); + } + + if (size != sizeof(*rtc_info)) { + dev_dbg(dev, "unexpected UEFI structure size %lu\n", size); + return -EINVAL; + } + + dev_dbg(dev, "uefi_rtc_info = %*ph\n", (int)size, rtc_info); + + /* Convert from GPS to Unix time offset */ + offset_gps = le32_to_cpu(rtc_info->offset_gps); + rtc_dd->offset = offset_gps + (u32)RTC_TIMESTAMP_EPOCH_GPS; + + return 0; +} + +static int pm8xxx_rtc_write_uefi_offset(struct pm8xxx_rtc *rtc_dd, u32 offset) +{ + struct qcom_uefi_rtc_info *rtc_info = &rtc_dd->rtc_info; + unsigned long size = sizeof(*rtc_info); + struct device *dev = rtc_dd->dev; + efi_status_t status; + u32 offset_gps; + + /* Convert from Unix to GPS time offset */ + offset_gps = offset - (u32)RTC_TIMESTAMP_EPOCH_GPS; + + rtc_info->offset_gps = cpu_to_le32(offset_gps); + + dev_dbg(dev, "efi_rtc_info = %*ph\n", (int)size, rtc_info); + + status = efivar_set_variable(QCOM_UEFI_NAME, &QCOM_UEFI_GUID, + QCOM_UEFI_ATTRS, size, rtc_info); + if (status != EFI_SUCCESS) { + dev_dbg(dev, "failed to write UEFI offset: %lx\n", status); + return efi_status_to_err(status); + } + + return 0; +} + +#else /* CONFIG_EFI */ + +static int pm8xxx_rtc_read_uefi_offset(struct pm8xxx_rtc *rtc_dd) +{ + return -ENODEV; +} + +static int pm8xxx_rtc_write_uefi_offset(struct pm8xxx_rtc *rtc_dd, u32 offset) +{ + return -ENODEV; +} + +#endif /* CONFIG_EFI */ + static int pm8xxx_rtc_read_nvmem_offset(struct pm8xxx_rtc *rtc_dd) { size_t len; @@ -110,14 +209,6 @@ static int pm8xxx_rtc_write_nvmem_offset(struct pm8xxx_rtc *rtc_dd, u32 offset) return 0; } -static int pm8xxx_rtc_read_offset(struct pm8xxx_rtc *rtc_dd) -{ - if (!rtc_dd->nvmem_cell) - return 0; - - return pm8xxx_rtc_read_nvmem_offset(rtc_dd); -} - static int pm8xxx_rtc_read_raw(struct pm8xxx_rtc *rtc_dd, u32 *secs) { const struct pm8xxx_rtc_regs *regs = rtc_dd->regs; @@ -155,7 +246,7 @@ static int pm8xxx_rtc_update_offset(struct pm8xxx_rtc *rtc_dd, u32 secs) u32 offset; int rc; - if (!rtc_dd->nvmem_cell) + if (!rtc_dd->nvmem_cell && !rtc_dd->use_uefi) return -ENODEV; rc = pm8xxx_rtc_read_raw(rtc_dd, &raw_secs); @@ -167,10 +258,25 @@ static int pm8xxx_rtc_update_offset(struct pm8xxx_rtc *rtc_dd, u32 secs) if (offset == rtc_dd->offset) return 0; - rc = pm8xxx_rtc_write_nvmem_offset(rtc_dd, offset); + /* + * Reduce flash wear by deferring updates due to clock drift until + * shutdown. + */ + if (abs_diff(offset, rtc_dd->offset) < 30) { + rtc_dd->offset_dirty = true; + goto out; + } + + if (rtc_dd->nvmem_cell) + rc = pm8xxx_rtc_write_nvmem_offset(rtc_dd, offset); + else + rc = pm8xxx_rtc_write_uefi_offset(rtc_dd, offset); + if (rc) return rc; + rtc_dd->offset_dirty = false; +out: rtc_dd->offset = offset; return 0; @@ -455,6 +561,30 @@ static const struct of_device_id pm8xxx_id_table[] = { }; MODULE_DEVICE_TABLE(of, pm8xxx_id_table); +static int pm8xxx_rtc_probe_offset(struct pm8xxx_rtc *rtc_dd) +{ + int rc; + + rtc_dd->nvmem_cell = devm_nvmem_cell_get(rtc_dd->dev, "offset"); + if (IS_ERR(rtc_dd->nvmem_cell)) { + rc = PTR_ERR(rtc_dd->nvmem_cell); + if (rc != -ENOENT) + return rc; + rtc_dd->nvmem_cell = NULL; + } else { + return pm8xxx_rtc_read_nvmem_offset(rtc_dd); + } + + /* Use UEFI storage as fallback if available */ + if (efivar_is_available()) { + rc = pm8xxx_rtc_read_uefi_offset(rtc_dd); + if (rc == 0) + rtc_dd->use_uefi = true; + } + + return 0; +} + static int pm8xxx_rtc_probe(struct platform_device *pdev) { const struct of_device_id *match; @@ -469,30 +599,23 @@ static int pm8xxx_rtc_probe(struct platform_device *pdev) if (rtc_dd == NULL) return -ENOMEM; + rtc_dd->regs = match->data; + rtc_dd->dev = &pdev->dev; + rtc_dd->regmap = dev_get_regmap(pdev->dev.parent, NULL); if (!rtc_dd->regmap) return -ENXIO; - rtc_dd->alarm_irq = platform_get_irq(pdev, 0); - if (rtc_dd->alarm_irq < 0) - return -ENXIO; + if (!of_property_read_bool(pdev->dev.of_node, "qcom,no-alarm")) { + rtc_dd->alarm_irq = platform_get_irq(pdev, 0); + if (rtc_dd->alarm_irq < 0) + return -ENXIO; + } rtc_dd->allow_set_time = of_property_read_bool(pdev->dev.of_node, "allow-set-time"); - - rtc_dd->nvmem_cell = devm_nvmem_cell_get(&pdev->dev, "offset"); - if (IS_ERR(rtc_dd->nvmem_cell)) { - rc = PTR_ERR(rtc_dd->nvmem_cell); - if (rc != -ENOENT) - return rc; - rtc_dd->nvmem_cell = NULL; - } - - rtc_dd->regs = match->data; - rtc_dd->dev = &pdev->dev; - if (!rtc_dd->allow_set_time) { - rc = pm8xxx_rtc_read_offset(rtc_dd); + rc = pm8xxx_rtc_probe_offset(rtc_dd); if (rc) return rc; } @@ -503,8 +626,6 @@ static int pm8xxx_rtc_probe(struct platform_device *pdev) platform_set_drvdata(pdev, rtc_dd); - device_init_wakeup(&pdev->dev, true); - rtc_dd->rtc = devm_rtc_allocate_device(&pdev->dev); if (IS_ERR(rtc_dd->rtc)) return PTR_ERR(rtc_dd->rtc); @@ -512,32 +633,41 @@ static int pm8xxx_rtc_probe(struct platform_device *pdev) rtc_dd->rtc->ops = &pm8xxx_rtc_ops; rtc_dd->rtc->range_max = U32_MAX; - rc = devm_request_any_context_irq(&pdev->dev, rtc_dd->alarm_irq, - pm8xxx_alarm_trigger, - IRQF_TRIGGER_RISING, - "pm8xxx_rtc_alarm", rtc_dd); - if (rc < 0) - return rc; + if (rtc_dd->alarm_irq) { + rc = devm_request_any_context_irq(&pdev->dev, rtc_dd->alarm_irq, + pm8xxx_alarm_trigger, + IRQF_TRIGGER_RISING, + "pm8xxx_rtc_alarm", rtc_dd); + if (rc < 0) + return rc; - rc = devm_rtc_register_device(rtc_dd->rtc); - if (rc) - return rc; + rc = devm_pm_set_wake_irq(&pdev->dev, rtc_dd->alarm_irq); + if (rc) + return rc; - rc = dev_pm_set_wake_irq(&pdev->dev, rtc_dd->alarm_irq); - if (rc) - return rc; + devm_device_init_wakeup(&pdev->dev); + } else { + clear_bit(RTC_FEATURE_ALARM, rtc_dd->rtc->features); + } - return 0; + return devm_rtc_register_device(rtc_dd->rtc); } -static void pm8xxx_remove(struct platform_device *pdev) +static void pm8xxx_shutdown(struct platform_device *pdev) { - dev_pm_clear_wake_irq(&pdev->dev); + struct pm8xxx_rtc *rtc_dd = platform_get_drvdata(pdev); + + if (rtc_dd->offset_dirty) { + if (rtc_dd->nvmem_cell) + pm8xxx_rtc_write_nvmem_offset(rtc_dd, rtc_dd->offset); + else + pm8xxx_rtc_write_uefi_offset(rtc_dd, rtc_dd->offset); + } } static struct platform_driver pm8xxx_rtc_driver = { .probe = pm8xxx_rtc_probe, - .remove = pm8xxx_remove, + .shutdown = pm8xxx_shutdown, .driver = { .name = "rtc-pm8xxx", .of_match_table = pm8xxx_id_table, diff --git a/drivers/rtc/rtc-renesas-rtca3.c b/drivers/rtc/rtc-renesas-rtca3.c index a056291d3887..ab816bdf0d77 100644 --- a/drivers/rtc/rtc-renesas-rtca3.c +++ b/drivers/rtc/rtc-renesas-rtca3.c @@ -586,17 +586,14 @@ static int rtca3_initial_setup(struct clk *clk, struct rtca3_priv *priv) */ usleep_range(sleep_us, sleep_us + 10); - /* Disable all interrupts. */ - mask = RTCA3_RCR1_AIE | RTCA3_RCR1_CIE | RTCA3_RCR1_PIE; - ret = rtca3_alarm_irq_set_helper(priv, mask, 0); - if (ret) - return ret; - mask = RTCA3_RCR2_START | RTCA3_RCR2_HR24; val = readb(priv->base + RTCA3_RCR2); - /* Nothing to do if already started in 24 hours and calendar count mode. */ - if ((val & mask) == mask) - return 0; + /* Only disable the interrupts if already started in 24 hours and calendar count mode. */ + if ((val & mask) == mask) { + /* Disable all interrupts. */ + mask = RTCA3_RCR1_AIE | RTCA3_RCR1_CIE | RTCA3_RCR1_PIE; + return rtca3_alarm_irq_set_helper(priv, mask, 0); + } /* Reconfigure the RTC in 24 hours and calendar count mode. */ mask = RTCA3_RCR2_START | RTCA3_RCR2_CNTMD; diff --git a/drivers/rtc/rtc-rv3032.c b/drivers/rtc/rtc-rv3032.c index 35b2e36b426a..2c6a8918acba 100644 --- a/drivers/rtc/rtc-rv3032.c +++ b/drivers/rtc/rtc-rv3032.c @@ -69,8 +69,7 @@ #define RV3032_CLKOUT2_FD_MSK GENMASK(6, 5) #define RV3032_CLKOUT2_OS BIT(7) -#define RV3032_CTRL1_EERD BIT(3) -#define RV3032_CTRL1_WADA BIT(5) +#define RV3032_CTRL1_EERD BIT(2) #define RV3032_CTRL2_STOP BIT(0) #define RV3032_CTRL2_EIE BIT(2) @@ -947,11 +946,6 @@ static int rv3032_probe(struct i2c_client *client) if (!client->irq) clear_bit(RTC_FEATURE_ALARM, rv3032->rtc->features); - ret = regmap_update_bits(rv3032->regmap, RV3032_CTRL1, - RV3032_CTRL1_WADA, RV3032_CTRL1_WADA); - if (ret) - return ret; - rv3032_trickle_charger_setup(&client->dev, rv3032); set_bit(RTC_FEATURE_BACKUP_SWITCH_MODE, rv3032->rtc->features); diff --git a/drivers/rtc/rtc-rx8581.c b/drivers/rtc/rtc-rx8581.c index b18c12887bdc..20c2dff01bae 100644 --- a/drivers/rtc/rtc-rx8581.c +++ b/drivers/rtc/rtc-rx8581.c @@ -52,11 +52,6 @@ #define RX8571_USER_RAM 0x10 #define RX8571_NVRAM_SIZE 0x10 -struct rx8581 { - struct regmap *regmap; - struct rtc_device *rtc; -}; - struct rx85x1_config { struct regmap_config regmap; unsigned int num_nvram; @@ -72,14 +67,14 @@ static int rx8581_rtc_read_time(struct device *dev, struct rtc_time *tm) unsigned char date[7]; unsigned int data; int err; - struct rx8581 *rx8581 = i2c_get_clientdata(client); + struct regmap *regmap = i2c_get_clientdata(client); /* First we ensure that the "update flag" is not set, we read the * time and date then re-read the "update flag". If the update flag * has been set, we know that the time has changed during the read so * we repeat the whole process again. */ - err = regmap_read(rx8581->regmap, RX8581_REG_FLAG, &data); + err = regmap_read(regmap, RX8581_REG_FLAG, &data); if (err < 0) return err; @@ -92,20 +87,20 @@ static int rx8581_rtc_read_time(struct device *dev, struct rtc_time *tm) do { /* If update flag set, clear it */ if (data & RX8581_FLAG_UF) { - err = regmap_write(rx8581->regmap, RX8581_REG_FLAG, - data & ~RX8581_FLAG_UF); + err = regmap_write(regmap, RX8581_REG_FLAG, + data & ~RX8581_FLAG_UF); if (err < 0) return err; } /* Now read time and date */ - err = regmap_bulk_read(rx8581->regmap, RX8581_REG_SC, date, + err = regmap_bulk_read(regmap, RX8581_REG_SC, date, sizeof(date)); if (err < 0) return err; /* Check flag register */ - err = regmap_read(rx8581->regmap, RX8581_REG_FLAG, &data); + err = regmap_read(regmap, RX8581_REG_FLAG, &data); if (err < 0) return err; } while (data & RX8581_FLAG_UF); @@ -137,7 +132,7 @@ static int rx8581_rtc_set_time(struct device *dev, struct rtc_time *tm) struct i2c_client *client = to_i2c_client(dev); int err; unsigned char buf[7]; - struct rx8581 *rx8581 = i2c_get_clientdata(client); + struct regmap *regmap = i2c_get_clientdata(client); dev_dbg(dev, "%s: secs=%d, mins=%d, hours=%d, " "mday=%d, mon=%d, year=%d, wday=%d\n", @@ -160,25 +155,23 @@ static int rx8581_rtc_set_time(struct device *dev, struct rtc_time *tm) buf[RX8581_REG_DW] = (0x1 << tm->tm_wday); /* Stop the clock */ - err = regmap_update_bits(rx8581->regmap, RX8581_REG_CTRL, + err = regmap_update_bits(regmap, RX8581_REG_CTRL, RX8581_CTRL_STOP, RX8581_CTRL_STOP); if (err < 0) return err; /* write register's data */ - err = regmap_bulk_write(rx8581->regmap, RX8581_REG_SC, - buf, sizeof(buf)); + err = regmap_bulk_write(regmap, RX8581_REG_SC, buf, sizeof(buf)); if (err < 0) return err; /* get VLF and clear it */ - err = regmap_update_bits(rx8581->regmap, RX8581_REG_FLAG, - RX8581_FLAG_VLF, 0); + err = regmap_update_bits(regmap, RX8581_REG_FLAG, RX8581_FLAG_VLF, 0); if (err < 0) return err; /* Restart the clock */ - return regmap_update_bits(rx8581->regmap, RX8581_REG_CTRL, + return regmap_update_bits(regmap, RX8581_REG_CTRL, RX8581_CTRL_STOP, 0); } @@ -190,29 +183,27 @@ static const struct rtc_class_ops rx8581_rtc_ops = { static int rx8571_nvram_read(void *priv, unsigned int offset, void *val, size_t bytes) { - struct rx8581 *rx8581 = priv; + struct regmap *regmap = priv; - return regmap_bulk_read(rx8581->regmap, RX8571_USER_RAM + offset, - val, bytes); + return regmap_bulk_read(regmap, RX8571_USER_RAM + offset, val, bytes); } static int rx8571_nvram_write(void *priv, unsigned int offset, void *val, size_t bytes) { - struct rx8581 *rx8581 = priv; + struct regmap *regmap = priv; - return regmap_bulk_write(rx8581->regmap, RX8571_USER_RAM + offset, - val, bytes); + return regmap_bulk_write(regmap, RX8571_USER_RAM + offset, val, bytes); } static int rx85x1_nvram_read(void *priv, unsigned int offset, void *val, size_t bytes) { - struct rx8581 *rx8581 = priv; + struct regmap *regmap = priv; unsigned int tmp_val; int ret; - ret = regmap_read(rx8581->regmap, RX8581_REG_RAM, &tmp_val); + ret = regmap_read(regmap, RX8581_REG_RAM, &tmp_val); (*(unsigned char *)val) = (unsigned char) tmp_val; return ret; @@ -221,12 +212,11 @@ static int rx85x1_nvram_read(void *priv, unsigned int offset, void *val, static int rx85x1_nvram_write(void *priv, unsigned int offset, void *val, size_t bytes) { - struct rx8581 *rx8581 = priv; + struct regmap *regmap = priv; unsigned char tmp_val; tmp_val = *((unsigned char *)val); - return regmap_write(rx8581->regmap, RX8581_REG_RAM, - (unsigned int)tmp_val); + return regmap_write(regmap, RX8581_REG_RAM, (unsigned int)tmp_val); } static const struct rx85x1_config rx8581_config = { @@ -249,9 +239,10 @@ static const struct rx85x1_config rx8571_config = { static int rx8581_probe(struct i2c_client *client) { - struct rx8581 *rx8581; + struct regmap *regmap; const struct rx85x1_config *config = &rx8581_config; const void *data = of_device_get_match_data(&client->dev); + struct rtc_device *rtc; static struct nvmem_config nvmem_cfg[] = { { .name = "rx85x1-", @@ -276,31 +267,27 @@ static int rx8581_probe(struct i2c_client *client) if (data) config = data; - rx8581 = devm_kzalloc(&client->dev, sizeof(struct rx8581), GFP_KERNEL); - if (!rx8581) - return -ENOMEM; - - i2c_set_clientdata(client, rx8581); + regmap = devm_regmap_init_i2c(client, &config->regmap); + if (IS_ERR(regmap)) + return PTR_ERR(regmap); - rx8581->regmap = devm_regmap_init_i2c(client, &config->regmap); - if (IS_ERR(rx8581->regmap)) - return PTR_ERR(rx8581->regmap); + i2c_set_clientdata(client, regmap); - rx8581->rtc = devm_rtc_allocate_device(&client->dev); - if (IS_ERR(rx8581->rtc)) - return PTR_ERR(rx8581->rtc); + rtc = devm_rtc_allocate_device(&client->dev); + if (IS_ERR(rtc)) + return PTR_ERR(rtc); - rx8581->rtc->ops = &rx8581_rtc_ops; - rx8581->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; - rx8581->rtc->range_max = RTC_TIMESTAMP_END_2099; - rx8581->rtc->start_secs = 0; - rx8581->rtc->set_start_time = true; + rtc->ops = &rx8581_rtc_ops; + rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + rtc->range_max = RTC_TIMESTAMP_END_2099; + rtc->start_secs = 0; + rtc->set_start_time = true; - ret = devm_rtc_register_device(rx8581->rtc); + ret = devm_rtc_register_device(rtc); for (i = 0; i < config->num_nvram; i++) { - nvmem_cfg[i].priv = rx8581; - devm_rtc_nvmem_register(rx8581->rtc, &nvmem_cfg[i]); + nvmem_cfg[i].priv = regmap; + devm_rtc_nvmem_register(rtc, &nvmem_cfg[i]); } return ret; diff --git a/drivers/rtc/rtc-rzn1.c b/drivers/rtc/rtc-rzn1.c index cb220807d925..eeb9612a666f 100644 --- a/drivers/rtc/rtc-rzn1.c +++ b/drivers/rtc/rtc-rzn1.c @@ -19,6 +19,7 @@ #include <linux/platform_device.h> #include <linux/pm_runtime.h> #include <linux/rtc.h> +#include <linux/spinlock.h> #define RZN1_RTC_CTL0 0x00 #define RZN1_RTC_CTL0_SLSB_SUBU 0 @@ -27,6 +28,7 @@ #define RZN1_RTC_CTL0_CE BIT(7) #define RZN1_RTC_CTL1 0x04 +#define RZN1_RTC_CTL1_1SE BIT(3) #define RZN1_RTC_CTL1_ALME BIT(4) #define RZN1_RTC_CTL2 0x08 @@ -58,6 +60,13 @@ struct rzn1_rtc { struct rtc_device *rtcdev; void __iomem *base; + /* + * Protects access to RZN1_RTC_CTL1 reg. rtc_lock with threaded_irqs + * would introduce race conditions when switching interrupts because + * of potential sleeps + */ + spinlock_t ctl1_access_lock; + struct rtc_time tm_alarm; }; static void rzn1_rtc_get_time_snapshot(struct rzn1_rtc *rtc, struct rtc_time *tm) @@ -135,8 +144,38 @@ static int rzn1_rtc_set_time(struct device *dev, struct rtc_time *tm) static irqreturn_t rzn1_rtc_alarm_irq(int irq, void *dev_id) { struct rzn1_rtc *rtc = dev_id; + u32 ctl1, set_irq_bits = 0; + + if (rtc->tm_alarm.tm_sec == 0) + rtc_update_irq(rtc->rtcdev, 1, RTC_AF | RTC_IRQF); + else + /* Switch to 1s interrupts */ + set_irq_bits = RZN1_RTC_CTL1_1SE; - rtc_update_irq(rtc->rtcdev, 1, RTC_AF | RTC_IRQF); + guard(spinlock)(&rtc->ctl1_access_lock); + + ctl1 = readl(rtc->base + RZN1_RTC_CTL1); + ctl1 &= ~RZN1_RTC_CTL1_ALME; + ctl1 |= set_irq_bits; + writel(ctl1, rtc->base + RZN1_RTC_CTL1); + + return IRQ_HANDLED; +} + +static irqreturn_t rzn1_rtc_1s_irq(int irq, void *dev_id) +{ + struct rzn1_rtc *rtc = dev_id; + u32 ctl1; + + if (readl(rtc->base + RZN1_RTC_SECC) == bin2bcd(rtc->tm_alarm.tm_sec)) { + guard(spinlock)(&rtc->ctl1_access_lock); + + ctl1 = readl(rtc->base + RZN1_RTC_CTL1); + ctl1 &= ~RZN1_RTC_CTL1_1SE; + writel(ctl1, rtc->base + RZN1_RTC_CTL1); + + rtc_update_irq(rtc->rtcdev, 1, RTC_AF | RTC_IRQF); + } return IRQ_HANDLED; } @@ -144,14 +183,38 @@ static irqreturn_t rzn1_rtc_alarm_irq(int irq, void *dev_id) static int rzn1_rtc_alarm_irq_enable(struct device *dev, unsigned int enable) { struct rzn1_rtc *rtc = dev_get_drvdata(dev); - u32 ctl1 = readl(rtc->base + RZN1_RTC_CTL1); + struct rtc_time *tm = &rtc->tm_alarm, tm_now; + u32 ctl1; + int ret; - if (enable) - ctl1 |= RZN1_RTC_CTL1_ALME; - else - ctl1 &= ~RZN1_RTC_CTL1_ALME; + guard(spinlock_irqsave)(&rtc->ctl1_access_lock); - writel(ctl1, rtc->base + RZN1_RTC_CTL1); + ctl1 = readl(rtc->base + RZN1_RTC_CTL1); + + if (enable) { + /* + * Use alarm interrupt if alarm time is at least a minute away + * or less than a minute but in the next minute. Otherwise use + * 1 second interrupt to wait for the proper second + */ + do { + ctl1 &= ~(RZN1_RTC_CTL1_ALME | RZN1_RTC_CTL1_1SE); + + ret = rzn1_rtc_read_time(dev, &tm_now); + if (ret) + return ret; + + if (rtc_tm_sub(tm, &tm_now) > 59 || tm->tm_min != tm_now.tm_min) + ctl1 |= RZN1_RTC_CTL1_ALME; + else + ctl1 |= RZN1_RTC_CTL1_1SE; + + writel(ctl1, rtc->base + RZN1_RTC_CTL1); + } while (readl(rtc->base + RZN1_RTC_SECC) != bin2bcd(tm_now.tm_sec)); + } else { + ctl1 &= ~(RZN1_RTC_CTL1_ALME | RZN1_RTC_CTL1_1SE); + writel(ctl1, rtc->base + RZN1_RTC_CTL1); + } return 0; } @@ -185,7 +248,7 @@ static int rzn1_rtc_read_alarm(struct device *dev, struct rtc_wkalrm *alrm) } ctl1 = readl(rtc->base + RZN1_RTC_CTL1); - alrm->enabled = !!(ctl1 & RZN1_RTC_CTL1_ALME); + alrm->enabled = !!(ctl1 & (RZN1_RTC_CTL1_ALME | RZN1_RTC_CTL1_1SE)); return 0; } @@ -216,6 +279,8 @@ static int rzn1_rtc_set_alarm(struct device *dev, struct rtc_wkalrm *alrm) writel(bin2bcd(tm->tm_hour), rtc->base + RZN1_RTC_ALH); writel(BIT(wday), rtc->base + RZN1_RTC_ALW); + rtc->tm_alarm = alrm->time; + rzn1_rtc_alarm_irq_enable(dev, alrm->enabled); return 0; @@ -304,7 +369,7 @@ static const struct rtc_class_ops rzn1_rtc_ops = { static int rzn1_rtc_probe(struct platform_device *pdev) { struct rzn1_rtc *rtc; - int alarm_irq; + int irq; int ret; rtc = devm_kzalloc(&pdev->dev, sizeof(*rtc), GFP_KERNEL); @@ -317,9 +382,9 @@ static int rzn1_rtc_probe(struct platform_device *pdev) if (IS_ERR(rtc->base)) return dev_err_probe(&pdev->dev, PTR_ERR(rtc->base), "Missing reg\n"); - alarm_irq = platform_get_irq(pdev, 0); - if (alarm_irq < 0) - return alarm_irq; + irq = platform_get_irq_byname(pdev, "alarm"); + if (irq < 0) + return irq; rtc->rtcdev = devm_rtc_allocate_device(&pdev->dev); if (IS_ERR(rtc->rtcdev)) @@ -329,8 +394,6 @@ static int rzn1_rtc_probe(struct platform_device *pdev) rtc->rtcdev->range_max = RTC_TIMESTAMP_END_2099; rtc->rtcdev->alarm_offset_max = 7 * 86400; rtc->rtcdev->ops = &rzn1_rtc_ops; - set_bit(RTC_FEATURE_ALARM_RES_MINUTE, rtc->rtcdev->features); - clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->rtcdev->features); ret = devm_pm_runtime_enable(&pdev->dev); if (ret < 0) @@ -349,13 +412,24 @@ static int rzn1_rtc_probe(struct platform_device *pdev) /* Disable all interrupts */ writel(0, rtc->base + RZN1_RTC_CTL1); - ret = devm_request_irq(&pdev->dev, alarm_irq, rzn1_rtc_alarm_irq, 0, - dev_name(&pdev->dev), rtc); + spin_lock_init(&rtc->ctl1_access_lock); + + ret = devm_request_irq(&pdev->dev, irq, rzn1_rtc_alarm_irq, 0, "RZN1 RTC Alarm", rtc); if (ret) { - dev_err(&pdev->dev, "RTC timer interrupt not available\n"); + dev_err(&pdev->dev, "RTC alarm interrupt not available\n"); goto dis_runtime_pm; } + irq = platform_get_irq_byname_optional(pdev, "pps"); + if (irq >= 0) + ret = devm_request_irq(&pdev->dev, irq, rzn1_rtc_1s_irq, 0, "RZN1 RTC 1s", rtc); + + if (irq < 0 || ret) { + set_bit(RTC_FEATURE_ALARM_RES_MINUTE, rtc->rtcdev->features); + clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->rtcdev->features); + dev_warn(&pdev->dev, "RTC pps interrupt not available. Alarm has only minute accuracy\n"); + } + ret = devm_rtc_register_device(rtc->rtcdev); if (ret) goto dis_runtime_pm; diff --git a/drivers/rtc/rtc-s35390a.c b/drivers/rtc/rtc-s35390a.c index e3dc18882f41..3408d2ab2741 100644 --- a/drivers/rtc/rtc-s35390a.c +++ b/drivers/rtc/rtc-s35390a.c @@ -63,7 +63,6 @@ MODULE_DEVICE_TABLE(of, s35390a_of_match); struct s35390a { struct i2c_client *client[8]; - struct rtc_device *rtc; int twentyfourhour; }; @@ -422,6 +421,7 @@ static int s35390a_probe(struct i2c_client *client) int err, err_read; unsigned int i; struct s35390a *s35390a; + struct rtc_device *rtc; char buf, status1; struct device *dev = &client->dev; @@ -447,9 +447,9 @@ static int s35390a_probe(struct i2c_client *client) } } - s35390a->rtc = devm_rtc_allocate_device(dev); - if (IS_ERR(s35390a->rtc)) - return PTR_ERR(s35390a->rtc); + rtc = devm_rtc_allocate_device(dev); + if (IS_ERR(rtc)) + return PTR_ERR(rtc); err_read = s35390a_read_status(s35390a, &status1); if (err_read < 0) { @@ -480,17 +480,17 @@ static int s35390a_probe(struct i2c_client *client) device_set_wakeup_capable(dev, 1); - s35390a->rtc->ops = &s35390a_rtc_ops; - s35390a->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; - s35390a->rtc->range_max = RTC_TIMESTAMP_END_2099; + rtc->ops = &s35390a_rtc_ops; + rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + rtc->range_max = RTC_TIMESTAMP_END_2099; - set_bit(RTC_FEATURE_ALARM_RES_MINUTE, s35390a->rtc->features); - clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, s35390a->rtc->features ); + set_bit(RTC_FEATURE_ALARM_RES_MINUTE, rtc->features); + clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->features); if (status1 & S35390A_FLAG_INT2) - rtc_update_irq(s35390a->rtc, 1, RTC_AF); + rtc_update_irq(rtc, 1, RTC_AF); - return devm_rtc_register_device(s35390a->rtc); + return devm_rtc_register_device(rtc); } static struct i2c_driver s35390a_driver = { diff --git a/drivers/rtc/rtc-s5m.c b/drivers/rtc/rtc-s5m.c index 36acca5b2639..db5c9b641277 100644 --- a/drivers/rtc/rtc-s5m.c +++ b/drivers/rtc/rtc-s5m.c @@ -146,7 +146,6 @@ static const struct s5m_rtc_reg_config s2mps15_rtc_regs = { struct s5m_rtc_info { struct device *dev; - struct i2c_client *i2c; struct sec_pmic_dev *s5m87xx; struct regmap *regmap; struct rtc_device *rtc_dev; @@ -627,11 +626,10 @@ static int s5m8767_rtc_init_reg(struct s5m_rtc_info *info) } info->rtc_24hr_mode = 1; - if (ret < 0) { - dev_err(info->dev, "%s: fail to write controlm reg(%d)\n", - __func__, ret); - return ret; - } + if (ret < 0) + return dev_err_probe(info->dev, ret, + "%s: fail to write controlm reg\n", + __func__); return ret; } @@ -640,6 +638,7 @@ static int s5m_rtc_probe(struct platform_device *pdev) { struct sec_pmic_dev *s5m87xx = dev_get_drvdata(pdev->dev.parent); struct s5m_rtc_info *info; + struct i2c_client *i2c; const struct regmap_config *regmap_cfg; int ret, alarm_irq; @@ -669,26 +668,21 @@ static int s5m_rtc_probe(struct platform_device *pdev) alarm_irq = S5M8767_IRQ_RTCA1; break; default: - dev_err(&pdev->dev, - "Device type %lu is not supported by RTC driver\n", - platform_get_device_id(pdev)->driver_data); - return -ENODEV; + return dev_err_probe(&pdev->dev, -ENODEV, + "Device type %lu is not supported by RTC driver\n", + platform_get_device_id(pdev)->driver_data); } - info->i2c = devm_i2c_new_dummy_device(&pdev->dev, s5m87xx->i2c->adapter, - RTC_I2C_ADDR); - if (IS_ERR(info->i2c)) { - dev_err(&pdev->dev, "Failed to allocate I2C for RTC\n"); - return PTR_ERR(info->i2c); - } + i2c = devm_i2c_new_dummy_device(&pdev->dev, s5m87xx->i2c->adapter, + RTC_I2C_ADDR); + if (IS_ERR(i2c)) + return dev_err_probe(&pdev->dev, PTR_ERR(i2c), + "Failed to allocate I2C for RTC\n"); - info->regmap = devm_regmap_init_i2c(info->i2c, regmap_cfg); - if (IS_ERR(info->regmap)) { - ret = PTR_ERR(info->regmap); - dev_err(&pdev->dev, "Failed to allocate RTC register map: %d\n", - ret); - return ret; - } + info->regmap = devm_regmap_init_i2c(i2c, regmap_cfg); + if (IS_ERR(info->regmap)) + return dev_err_probe(&pdev->dev, PTR_ERR(info->regmap), + "Failed to allocate RTC register map\n"); info->dev = &pdev->dev; info->s5m87xx = s5m87xx; @@ -696,11 +690,10 @@ static int s5m_rtc_probe(struct platform_device *pdev) if (s5m87xx->irq_data) { info->irq = regmap_irq_get_virq(s5m87xx->irq_data, alarm_irq); - if (info->irq <= 0) { - dev_err(&pdev->dev, "Failed to get virtual IRQ %d\n", - alarm_irq); - return -EINVAL; - } + if (info->irq <= 0) + return dev_err_probe(&pdev->dev, -EINVAL, + "Failed to get virtual IRQ %d\n", + alarm_irq); } platform_set_drvdata(pdev, info); @@ -724,11 +717,10 @@ static int s5m_rtc_probe(struct platform_device *pdev) ret = devm_request_threaded_irq(&pdev->dev, info->irq, NULL, s5m_rtc_alarm_irq, 0, "rtc-alarm0", info); - if (ret < 0) { - dev_err(&pdev->dev, "Failed to request alarm IRQ: %d: %d\n", - info->irq, ret); - return ret; - } + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, + "Failed to request alarm IRQ %d\n", + info->irq); device_init_wakeup(&pdev->dev, true); } diff --git a/drivers/rtc/rtc-sd2405al.c b/drivers/rtc/rtc-sd2405al.c index d2568c3e3876..00c3033e8079 100644 --- a/drivers/rtc/rtc-sd2405al.c +++ b/drivers/rtc/rtc-sd2405al.c @@ -42,7 +42,6 @@ struct sd2405al { struct device *dev; - struct rtc_device *rtc; struct regmap *regmap; }; @@ -167,6 +166,7 @@ static const struct regmap_config sd2405al_regmap_conf = { static int sd2405al_probe(struct i2c_client *client) { struct sd2405al *sd2405al; + struct rtc_device *rtc; int ret; if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) @@ -182,17 +182,17 @@ static int sd2405al_probe(struct i2c_client *client) if (IS_ERR(sd2405al->regmap)) return PTR_ERR(sd2405al->regmap); - sd2405al->rtc = devm_rtc_allocate_device(&client->dev); - if (IS_ERR(sd2405al->rtc)) - return PTR_ERR(sd2405al->rtc); + rtc = devm_rtc_allocate_device(&client->dev); + if (IS_ERR(rtc)) + return PTR_ERR(rtc); - sd2405al->rtc->ops = &sd2405al_rtc_ops; - sd2405al->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; - sd2405al->rtc->range_max = RTC_TIMESTAMP_END_2099; + rtc->ops = &sd2405al_rtc_ops; + rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + rtc->range_max = RTC_TIMESTAMP_END_2099; dev_set_drvdata(&client->dev, sd2405al); - ret = devm_rtc_register_device(sd2405al->rtc); + ret = devm_rtc_register_device(rtc); if (ret < 0) return ret; diff --git a/drivers/rtc/rtc-sd3078.c b/drivers/rtc/rtc-sd3078.c index fe27b54beaad..10cc1dcfc774 100644 --- a/drivers/rtc/rtc-sd3078.c +++ b/drivers/rtc/rtc-sd3078.c @@ -36,11 +36,6 @@ */ #define WRITE_PROTECT_EN 0 -struct sd3078 { - struct rtc_device *rtc; - struct regmap *regmap; -}; - /* * In order to prevent arbitrary modification of the time register, * when modification of the register, @@ -49,14 +44,11 @@ struct sd3078 { * 2. set WRITE2 bit * 3. set WRITE3 bit */ -static void sd3078_enable_reg_write(struct sd3078 *sd3078) +static void sd3078_enable_reg_write(struct regmap *regmap) { - regmap_update_bits(sd3078->regmap, SD3078_REG_CTRL2, - KEY_WRITE1, KEY_WRITE1); - regmap_update_bits(sd3078->regmap, SD3078_REG_CTRL1, - KEY_WRITE2, KEY_WRITE2); - regmap_update_bits(sd3078->regmap, SD3078_REG_CTRL1, - KEY_WRITE3, KEY_WRITE3); + regmap_update_bits(regmap, SD3078_REG_CTRL2, KEY_WRITE1, KEY_WRITE1); + regmap_update_bits(regmap, SD3078_REG_CTRL1, KEY_WRITE2, KEY_WRITE2); + regmap_update_bits(regmap, SD3078_REG_CTRL1, KEY_WRITE3, KEY_WRITE3); } #if WRITE_PROTECT_EN @@ -69,14 +61,11 @@ static void sd3078_enable_reg_write(struct sd3078 *sd3078) * 2. clear WRITE3 bit * 3. clear WRITE1 bit */ -static void sd3078_disable_reg_write(struct sd3078 *sd3078) +static void sd3078_disable_reg_write(struct regmap *regmap) { - regmap_update_bits(sd3078->regmap, SD3078_REG_CTRL1, - KEY_WRITE2, 0); - regmap_update_bits(sd3078->regmap, SD3078_REG_CTRL1, - KEY_WRITE3, 0); - regmap_update_bits(sd3078->regmap, SD3078_REG_CTRL2, - KEY_WRITE1, 0); + regmap_update_bits(regmap, SD3078_REG_CTRL1, KEY_WRITE2, 0); + regmap_update_bits(regmap, SD3078_REG_CTRL1, KEY_WRITE3, 0); + regmap_update_bits(regmap, SD3078_REG_CTRL2, KEY_WRITE1, 0); } #endif @@ -85,11 +74,10 @@ static int sd3078_rtc_read_time(struct device *dev, struct rtc_time *tm) unsigned char hour; unsigned char rtc_data[NUM_TIME_REGS] = {0}; struct i2c_client *client = to_i2c_client(dev); - struct sd3078 *sd3078 = i2c_get_clientdata(client); + struct regmap *regmap = i2c_get_clientdata(client); int ret; - ret = regmap_bulk_read(sd3078->regmap, SD3078_REG_SC, rtc_data, - NUM_TIME_REGS); + ret = regmap_bulk_read(regmap, SD3078_REG_SC, rtc_data, NUM_TIME_REGS); if (ret < 0) { dev_err(dev, "reading from RTC failed with err:%d\n", ret); return ret; @@ -123,7 +111,7 @@ static int sd3078_rtc_set_time(struct device *dev, struct rtc_time *tm) { unsigned char rtc_data[NUM_TIME_REGS]; struct i2c_client *client = to_i2c_client(dev); - struct sd3078 *sd3078 = i2c_get_clientdata(client); + struct regmap *regmap = i2c_get_clientdata(client); int ret; rtc_data[SD3078_REG_SC] = bin2bcd(tm->tm_sec); @@ -135,10 +123,10 @@ static int sd3078_rtc_set_time(struct device *dev, struct rtc_time *tm) rtc_data[SD3078_REG_YR] = bin2bcd(tm->tm_year - 100); #if WRITE_PROTECT_EN - sd3078_enable_reg_write(sd3078); + sd3078_enable_reg_write(regmap); #endif - ret = regmap_bulk_write(sd3078->regmap, SD3078_REG_SC, rtc_data, + ret = regmap_bulk_write(regmap, SD3078_REG_SC, rtc_data, NUM_TIME_REGS); if (ret < 0) { dev_err(dev, "writing to RTC failed with err:%d\n", ret); @@ -146,7 +134,7 @@ static int sd3078_rtc_set_time(struct device *dev, struct rtc_time *tm) } #if WRITE_PROTECT_EN - sd3078_disable_reg_write(sd3078); + sd3078_disable_reg_write(regmap); #endif return 0; @@ -166,36 +154,33 @@ static const struct regmap_config regmap_config = { static int sd3078_probe(struct i2c_client *client) { int ret; - struct sd3078 *sd3078; + struct regmap *regmap; + struct rtc_device *rtc; if (!i2c_check_functionality(client->adapter, I2C_FUNC_I2C)) return -ENODEV; - sd3078 = devm_kzalloc(&client->dev, sizeof(*sd3078), GFP_KERNEL); - if (!sd3078) - return -ENOMEM; - - sd3078->regmap = devm_regmap_init_i2c(client, ®map_config); - if (IS_ERR(sd3078->regmap)) { + regmap = devm_regmap_init_i2c(client, ®map_config); + if (IS_ERR(regmap)) { dev_err(&client->dev, "regmap allocation failed\n"); - return PTR_ERR(sd3078->regmap); + return PTR_ERR(regmap); } - i2c_set_clientdata(client, sd3078); + i2c_set_clientdata(client, regmap); - sd3078->rtc = devm_rtc_allocate_device(&client->dev); - if (IS_ERR(sd3078->rtc)) - return PTR_ERR(sd3078->rtc); + rtc = devm_rtc_allocate_device(&client->dev); + if (IS_ERR(rtc)) + return PTR_ERR(rtc); - sd3078->rtc->ops = &sd3078_rtc_ops; - sd3078->rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; - sd3078->rtc->range_max = RTC_TIMESTAMP_END_2099; + rtc->ops = &sd3078_rtc_ops; + rtc->range_min = RTC_TIMESTAMP_BEGIN_2000; + rtc->range_max = RTC_TIMESTAMP_END_2099; - ret = devm_rtc_register_device(sd3078->rtc); + ret = devm_rtc_register_device(rtc); if (ret) return ret; - sd3078_enable_reg_write(sd3078); + sd3078_enable_reg_write(regmap); return 0; } diff --git a/drivers/rtc/rtc-stm32.c b/drivers/rtc/rtc-stm32.c index a0564d443569..1b715db47160 100644 --- a/drivers/rtc/rtc-stm32.c +++ b/drivers/rtc/rtc-stm32.c @@ -1143,11 +1143,11 @@ static int stm32_rtc_probe(struct platform_device *pdev) goto err; } - ret = device_init_wakeup(&pdev->dev, true); + ret = devm_device_init_wakeup(&pdev->dev); if (ret) goto err; - ret = dev_pm_set_wake_irq(&pdev->dev, rtc->irq_alarm); + ret = devm_pm_set_wake_irq(&pdev->dev, rtc->irq_alarm); if (ret) goto err; @@ -1208,9 +1208,6 @@ err_no_rtc_ck: if (rtc->data->need_dbp) regmap_update_bits(rtc->dbp, rtc->dbp_reg, rtc->dbp_mask, 0); - dev_pm_clear_wake_irq(&pdev->dev); - device_init_wakeup(&pdev->dev, false); - return ret; } @@ -1237,9 +1234,6 @@ static void stm32_rtc_remove(struct platform_device *pdev) /* Enable backup domain write protection if needed */ if (rtc->data->need_dbp) regmap_update_bits(rtc->dbp, rtc->dbp_reg, rtc->dbp_mask, 0); - - dev_pm_clear_wake_irq(&pdev->dev); - device_init_wakeup(&pdev->dev, false); } static int stm32_rtc_suspend(struct device *dev) |