rtc: Allow use of RTC in SPL and TPL

Add Kconfig options so that the RTC can be used in SPL and TPL. This is
helpful for accessing the contents of CMOS RAM, for example.

Signed-off-by: Simon Glass <sjg@chromium.org>

diff --git a/configs/chromebook_link64_defconfig b/configs/chromebook_link64_defconfig
index fe6544b..2c51a2f 100644 (file)
--- a/configs/chromebook_link64_defconfig
+++ b/configs/chromebook_link64_defconfig
@@ -69,6 +69,7 @@ CONFIG_DM_I2C=y
 CONFIG_SYS_I2C_INTEL=y
 CONFIG_CROS_EC=y
 CONFIG_CROS_EC_LPC=y
+CONFIG_SPL_DM_RTC=y
 CONFIG_SYS_NS16550=y
 CONFIG_SPI=y
 CONFIG_SPL_TIMER=y

diff --git a/drivers/rtc/Kconfig b/drivers/rtc/Kconfig
index 97cf7d8..bcc01b1 100644 (file)
--- a/drivers/rtc/Kconfig
+++ b/drivers/rtc/Kconfig
@@ -13,6 +13,24 @@ config DM_RTC
          drivers to perform the actual functions. See rtc.h for a
          description of the API.
 
+config SPL_DM_RTC
+       bool "Enable Driver Model for RTC drivers in SPL"
+       depends on SPL_DM
+       help
+         Enable drver model for real-time-clock drivers. The RTC uclass
+         then provides the rtc_get()/rtc_set() interface, delegating to
+         drivers to perform the actual functions. See rtc.h for a
+         description of the API.
+
+config TPL_DM_RTC
+       bool "Enable Driver Model for RTC drivers in TPL"
+       depends on TPL_DM
+       help
+         Enable drver model for real-time-clock drivers. The RTC uclass
+         then provides the rtc_get()/rtc_set() interface, delegating to
+         drivers to perform the actual functions. See rtc.h for a
+         description of the API.
+
 config RTC_PCF2127
        bool "Enable PCF2127 driver"
        depends on DM_RTC

diff --git a/drivers/rtc/Makefile b/drivers/rtc/Makefile
index 513e3ff..1724602 100644 (file)
--- a/drivers/rtc/Makefile
+++ b/drivers/rtc/Makefile
@@ -4,7 +4,7 @@
 # Wolfgang Denk, DENX Software Engineering, wd@denx.de.
 #ccflags-y += -DDEBUG
 
-obj-$(CONFIG_DM_RTC) += rtc-uclass.o
+obj-$(CONFIG_$(SPL_TPL_)DM_RTC) += rtc-uclass.o
 
 obj-$(CONFIG_RTC_AT91SAM9_RTT) += at91sam9_rtt.o
 obj-y += date.o