From: AKASHI Takahiro takahiro.akashi@linaro.org
With this patch, PL031 driver is converted to driver-model-compliant driver. In addition, CONFIG_SYS_RTC_PL031_BASE is no longer valid.
Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org --- drivers/rtc/pl031.c | 126 ++++++++++++++++++++++------------- include/configs/qemu-arm.h | 3 - scripts/config_whitelist.txt | 1 - 3 files changed, 80 insertions(+), 50 deletions(-)
diff --git a/drivers/rtc/pl031.c b/drivers/rtc/pl031.c index 8955805e3bc1..8bf04f26a375 100644 --- a/drivers/rtc/pl031.c +++ b/drivers/rtc/pl031.c @@ -8,13 +8,11 @@
#include <common.h> #include <command.h> +#include <dm.h> +#include <errno.h> #include <rtc.h> - -#if defined(CONFIG_CMD_DATE) - -#ifndef CONFIG_SYS_RTC_PL031_BASE -#error CONFIG_SYS_RTC_PL031_BASE is not defined! -#endif +#include <asm/io.h> +#include <asm/types.h>
/* * Register definitions @@ -30,78 +28,114 @@
#define RTC_CR_START (1 << 0)
-#define RTC_WRITE_REG(addr, val) \ - (*(volatile unsigned int *)(CONFIG_SYS_RTC_PL031_BASE + (addr)) = (val)) -#define RTC_READ_REG(addr) \ - (*(volatile unsigned int *)(CONFIG_SYS_RTC_PL031_BASE + (addr))) +struct pl031_platdata { + phys_addr_t base; +};
-static int pl031_initted = 0; +static inline u32 pl031_read_reg(struct udevice *dev, int reg) +{ + struct pl031_platdata *pdata = dev_get_platdata(dev);
-/* Enable RTC Start in Control register*/ -void rtc_init(void) + return readl(pdata->base + reg); +} + +static inline u32 pl031_write_reg(struct udevice *dev, int reg, u32 value) { - RTC_WRITE_REG(RTC_CR, RTC_CR_START); + struct pl031_platdata *pdata = dev_get_platdata(dev);
- pl031_initted = 1; + return writel(value, pdata->base + reg); }
/* - * Reset the RTC. We set the date back to 1970-01-01. + * Probe RTC device + */ +static int pl031_probe(struct udevice *dev) +{ + /* Enable RTC Start in Control register*/ + pl031_write_reg(dev, RTC_CR, RTC_CR_START); + + return 0; +} + +/* + * Get the current time from the RTC */ -void rtc_reset(void) +static int pl031_get(struct udevice *dev, struct rtc_time *tm) { - RTC_WRITE_REG(RTC_LR, 0x00); - if(!pl031_initted) - rtc_init(); + unsigned long tim; + + if (!tm) + return -EINVAL; + + tim = pl031_read_reg(dev, RTC_DR); + + rtc_to_tm(tim, tm); + + debug("Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", + tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_wday, + tm->tm_hour, tm->tm_min, tm->tm_sec); + + return 0; }
/* * Set the RTC -*/ -int rtc_set(struct rtc_time *tmp) + */ +static int pl031_set(struct udevice *dev, const struct rtc_time *tm) { unsigned long tim;
- if(!pl031_initted) - rtc_init(); + if (!tm) + return -EINVAL;
- if (tmp == NULL) { - puts("Error setting the date/time\n"); - return -1; - } + debug("Set DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", + tm->tm_year, tm->tm_mon, tm->tm_mday, tm->tm_wday, + tm->tm_hour, tm->tm_min, tm->tm_sec);
/* Calculate number of seconds this incoming time represents */ - tim = rtc_mktime(tmp); + tim = rtc_mktime(tm);
- RTC_WRITE_REG(RTC_LR, tim); + pl031_write_reg(dev, RTC_LR, tim);
- return -1; + return 0; }
/* - * Get the current time from the RTC + * Reset the RTC. We set the date back to 1970-01-01. */ -int rtc_get(struct rtc_time *tmp) +static int pl031_reset(struct udevice *dev) { - ulong tim; + pl031_write_reg(dev, RTC_LR, 0);
- if(!pl031_initted) - rtc_init(); + return 0; +}
- if (tmp == NULL) { - puts("Error getting the date/time\n"); - return -1; - } +static const struct rtc_ops pl031_ops = { + .get = pl031_get, + .set = pl031_set, + .reset = pl031_reset, +};
- tim = RTC_READ_REG(RTC_DR); +static const struct udevice_id pl031_ids[] = { + { .compatible = "arm,pl031" }, + { } +};
- rtc_to_tm(tim, tmp); +static int pl031_ofdata_to_platdata(struct udevice *dev) +{ + struct pl031_platdata *pdata = dev_get_platdata(dev);
- debug ( "Get DATE: %4d-%02d-%02d (wday=%d) TIME: %2d:%02d:%02d\n", - tmp->tm_year, tmp->tm_mon, tmp->tm_mday, tmp->tm_wday, - tmp->tm_hour, tmp->tm_min, tmp->tm_sec); + pdata->base = dev_read_addr(dev);
return 0; }
-#endif +U_BOOT_DRIVER(rtc_pl031) = { + .name = "rtc-pl031", + .id = UCLASS_RTC, + .of_match = pl031_ids, + .probe = pl031_probe, + .ofdata_to_platdata = pl031_ofdata_to_platdata, + .platdata_auto_alloc_size = sizeof(struct pl031_platdata), + .ops = &pl031_ops, +}; diff --git a/include/configs/qemu-arm.h b/include/configs/qemu-arm.h index 913ff4f2636f..ba106247dc6f 100644 --- a/include/configs/qemu-arm.h +++ b/include/configs/qemu-arm.h @@ -23,9 +23,6 @@ /* For block devices, QEMU emulates an ICH9 AHCI controller over PCI */ #define CONFIG_SYS_SCSI_MAX_SCSI_ID 6
-/* QEMU emulates the ARM AMBA PL031 RTC */ -#define CONFIG_SYS_RTC_PL031_BASE 0x09010000 - /* Environment options */ #define CONFIG_ENV_SIZE SZ_64K
diff --git a/scripts/config_whitelist.txt b/scripts/config_whitelist.txt index fc37099cbe0e..6168684daabf 100644 --- a/scripts/config_whitelist.txt +++ b/scripts/config_whitelist.txt @@ -4070,7 +4070,6 @@ CONFIG_SYS_RSTC_RMR_VAL CONFIG_SYS_RTC_BUS_NUM CONFIG_SYS_RTC_CNT CONFIG_SYS_RTC_OSCILLATOR -CONFIG_SYS_RTC_PL031_BASE CONFIG_SYS_RTC_REG_BASE_ADDR CONFIG_SYS_RTC_SETUP CONFIG_SYS_RV3029_TCR