Use readl_poll_timeout() from <iopoll.h> instead of using custom poll
loops.
The timeout settings are different, but that shouldn't be much of a
problem. Instead of polling 10000 times in a close loop, it polls for
one millisecond.
Signed-off-by: Paul Cercueil <paul@xxxxxxxxxxxxxxx>
---
drivers/rtc/rtc-jz4740.c | 18 ++++++------------
1 file changed, 6 insertions(+), 12 deletions(-)
diff --git a/drivers/rtc/rtc-jz4740.c b/drivers/rtc/rtc-jz4740.c
index c383719292c7..4ee6e5ee09b1 100644
--- a/drivers/rtc/rtc-jz4740.c
+++ b/drivers/rtc/rtc-jz4740.c
@@ -7,6 +7,7 @@
#include <linux/clk.h>
#include <linux/io.h>
+#include <linux/iopoll.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/of_device.h>
@@ -69,19 +70,15 @@ static inline uint32_t jz4740_rtc_reg_read(struct jz4740_rtc *rtc, size_t reg)
static int jz4740_rtc_wait_write_ready(struct jz4740_rtc *rtc)
{
uint32_t ctrl;
- int timeout = 10000;
- do {
- ctrl = jz4740_rtc_reg_read(rtc, JZ_REG_RTC_CTRL);
- } while (!(ctrl & JZ_RTC_CTRL_WRDY) && --timeout);
-
- return timeout ? 0 : -EIO;
+ return readl_poll_timeout(rtc->base + JZ_REG_RTC_CTRL, ctrl,
+ ctrl & JZ_RTC_CTRL_WRDY, 0, 1000);
}
static inline int jz4780_rtc_enable_write(struct jz4740_rtc *rtc)
{
uint32_t ctrl;
- int ret, timeout = 10000;
+ int ret;
ret = jz4740_rtc_wait_write_ready(rtc);
if (ret != 0)
@@ -89,11 +86,8 @@ static inline int jz4780_rtc_enable_write(struct jz4740_rtc *rtc)
writel(JZ_RTC_WENR_MAGIC, rtc->base + JZ_REG_RTC_WENR);
- do {
- ctrl = readl(rtc->base + JZ_REG_RTC_WENR);
- } while (!(ctrl & JZ_RTC_WENR_WEN) && --timeout);
-
- return timeout ? 0 : -EIO;
+ return readl_poll_timeout(rtc->base + JZ_REG_RTC_WENR, ctrl,
+ ctrl & JZ_RTC_WENR_WEN, 0, 1000);
}
static inline int jz4740_rtc_reg_write(struct jz4740_rtc *rtc, size_t reg,
--
2.35.1
