diff options
Diffstat (limited to 'drivers/rtc/rtc-moxart.c')
| -rw-r--r-- | drivers/rtc/rtc-moxart.c | 89 |
1 files changed, 36 insertions, 53 deletions
diff --git a/drivers/rtc/rtc-moxart.c b/drivers/rtc/rtc-moxart.c index 6b24ac9e1cfa..2247dd39ee4b 100644 --- a/drivers/rtc/rtc-moxart.c +++ b/drivers/rtc/rtc-moxart.c @@ -10,14 +10,15 @@ * Moxa Technology Co., Ltd. <www.moxa.com> */ +#include <linux/err.h> #include <linux/init.h> #include <linux/kernel.h> #include <linux/delay.h> #include <linux/rtc.h> #include <linux/platform_device.h> #include <linux/module.h> -#include <linux/gpio.h> -#include <linux/of_gpio.h> +#include <linux/mod_devicetable.h> +#include <linux/gpio/consumer.h> #define GPIO_RTC_RESERVED 0x0C #define GPIO_RTC_DATA_SET 0x10 @@ -55,7 +56,9 @@ struct moxart_rtc { struct rtc_device *rtc; spinlock_t rtc_lock; - int gpio_data, gpio_sclk, gpio_reset; + struct gpio_desc *gpio_data; + struct gpio_desc *gpio_sclk; + struct gpio_desc *gpio_reset; }; static int day_of_year[12] = { 0, 31, 59, 90, 120, 151, 181, @@ -67,10 +70,10 @@ static void moxart_rtc_write_byte(struct device *dev, u8 data) int i; for (i = 0; i < 8; i++, data >>= 1) { - gpio_set_value(moxart_rtc->gpio_sclk, 0); - gpio_set_value(moxart_rtc->gpio_data, ((data & 1) == 1)); + gpiod_set_value(moxart_rtc->gpio_sclk, 0); + gpiod_set_value(moxart_rtc->gpio_data, ((data & 1) == 1)); udelay(GPIO_RTC_DELAY_TIME); - gpio_set_value(moxart_rtc->gpio_sclk, 1); + gpiod_set_value(moxart_rtc->gpio_sclk, 1); udelay(GPIO_RTC_DELAY_TIME); } } @@ -82,11 +85,11 @@ static u8 moxart_rtc_read_byte(struct device *dev) u8 data = 0; for (i = 0; i < 8; i++) { - gpio_set_value(moxart_rtc->gpio_sclk, 0); + gpiod_set_value(moxart_rtc->gpio_sclk, 0); udelay(GPIO_RTC_DELAY_TIME); - gpio_set_value(moxart_rtc->gpio_sclk, 1); + gpiod_set_value(moxart_rtc->gpio_sclk, 1); udelay(GPIO_RTC_DELAY_TIME); - if (gpio_get_value(moxart_rtc->gpio_data)) + if (gpiod_get_value(moxart_rtc->gpio_data)) data |= (1 << i); udelay(GPIO_RTC_DELAY_TIME); } @@ -101,15 +104,15 @@ static u8 moxart_rtc_read_register(struct device *dev, u8 cmd) local_irq_save(flags); - gpio_direction_output(moxart_rtc->gpio_data, 0); - gpio_set_value(moxart_rtc->gpio_reset, 1); + gpiod_direction_output(moxart_rtc->gpio_data, 0); + gpiod_set_value(moxart_rtc->gpio_reset, 1); udelay(GPIO_RTC_DELAY_TIME); moxart_rtc_write_byte(dev, cmd); - gpio_direction_input(moxart_rtc->gpio_data); + gpiod_direction_input(moxart_rtc->gpio_data); udelay(GPIO_RTC_DELAY_TIME); data = moxart_rtc_read_byte(dev); - gpio_set_value(moxart_rtc->gpio_sclk, 0); - gpio_set_value(moxart_rtc->gpio_reset, 0); + gpiod_set_value(moxart_rtc->gpio_sclk, 0); + gpiod_set_value(moxart_rtc->gpio_reset, 0); udelay(GPIO_RTC_DELAY_TIME); local_irq_restore(flags); @@ -124,13 +127,13 @@ static void moxart_rtc_write_register(struct device *dev, u8 cmd, u8 data) local_irq_save(flags); - gpio_direction_output(moxart_rtc->gpio_data, 0); - gpio_set_value(moxart_rtc->gpio_reset, 1); + gpiod_direction_output(moxart_rtc->gpio_data, 0); + gpiod_set_value(moxart_rtc->gpio_reset, 1); udelay(GPIO_RTC_DELAY_TIME); moxart_rtc_write_byte(dev, cmd); moxart_rtc_write_byte(dev, data); - gpio_set_value(moxart_rtc->gpio_sclk, 0); - gpio_set_value(moxart_rtc->gpio_reset, 0); + gpiod_set_value(moxart_rtc->gpio_sclk, 0); + gpiod_set_value(moxart_rtc->gpio_reset, 0); udelay(GPIO_RTC_DELAY_TIME); local_irq_restore(flags); @@ -247,53 +250,33 @@ static int moxart_rtc_probe(struct platform_device *pdev) if (!moxart_rtc) return -ENOMEM; - moxart_rtc->gpio_data = of_get_named_gpio(pdev->dev.of_node, - "gpio-rtc-data", 0); - if (!gpio_is_valid(moxart_rtc->gpio_data)) { - dev_err(&pdev->dev, "invalid gpio (data): %d\n", - moxart_rtc->gpio_data); - return moxart_rtc->gpio_data; - } - - moxart_rtc->gpio_sclk = of_get_named_gpio(pdev->dev.of_node, - "gpio-rtc-sclk", 0); - if (!gpio_is_valid(moxart_rtc->gpio_sclk)) { - dev_err(&pdev->dev, "invalid gpio (sclk): %d\n", - moxart_rtc->gpio_sclk); - return moxart_rtc->gpio_sclk; - } - - moxart_rtc->gpio_reset = of_get_named_gpio(pdev->dev.of_node, - "gpio-rtc-reset", 0); - if (!gpio_is_valid(moxart_rtc->gpio_reset)) { - dev_err(&pdev->dev, "invalid gpio (reset): %d\n", - moxart_rtc->gpio_reset); - return moxart_rtc->gpio_reset; - } - - spin_lock_init(&moxart_rtc->rtc_lock); - platform_set_drvdata(pdev, moxart_rtc); - - ret = devm_gpio_request(&pdev->dev, moxart_rtc->gpio_data, "rtc_data"); + moxart_rtc->gpio_data = devm_gpiod_get(&pdev->dev, "rtc-data", + GPIOD_IN); + ret = PTR_ERR_OR_ZERO(moxart_rtc->gpio_data); if (ret) { - dev_err(&pdev->dev, "can't get rtc_data gpio\n"); + dev_err(&pdev->dev, "can't get rtc data gpio: %d\n", ret); return ret; } - ret = devm_gpio_request_one(&pdev->dev, moxart_rtc->gpio_sclk, - GPIOF_DIR_OUT, "rtc_sclk"); + moxart_rtc->gpio_sclk = devm_gpiod_get(&pdev->dev, "rtc-sclk", + GPIOD_ASIS); + ret = PTR_ERR_OR_ZERO(moxart_rtc->gpio_sclk); if (ret) { - dev_err(&pdev->dev, "can't get rtc_sclk gpio\n"); + dev_err(&pdev->dev, "can't get rtc sclk gpio: %d\n", ret); return ret; } - ret = devm_gpio_request_one(&pdev->dev, moxart_rtc->gpio_reset, - GPIOF_DIR_OUT, "rtc_reset"); + moxart_rtc->gpio_reset = devm_gpiod_get(&pdev->dev, "rtc-reset", + GPIOD_ASIS); + ret = PTR_ERR_OR_ZERO(moxart_rtc->gpio_reset); if (ret) { - dev_err(&pdev->dev, "can't get rtc_reset gpio\n"); + dev_err(&pdev->dev, "can't get rtc reset gpio: %d\n", ret); return ret; } + spin_lock_init(&moxart_rtc->rtc_lock); + platform_set_drvdata(pdev, moxart_rtc); + moxart_rtc->rtc = devm_rtc_device_register(&pdev->dev, pdev->name, &moxart_rtc_ops, THIS_MODULE); |