MIPS: TXx9: Add support for TX4939 internal RTC

Add platform support to use rtc-tx4939 driver.

Signed-off-by: Atsushi Nemoto <anemo@mba.ocn.ne.jp>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

3 files changed, 24 insertions, 0 deletions

diff --git a/arch/mips/include/asm/txx9/tx4939.h b/arch/mips/include/asm/txx9/tx4939.h
index 88badb423010..964ef7ede268 100644
--- a/arch/mips/include/asm/txx9/tx4939.h
+++ b/arch/mips/include/asm/txx9/tx4939.h
@@ -541,5 +541,6 @@ void tx4939_irq_init(void);
 int tx4939_irq(void);
 void tx4939_mtd_init(int ch);
 void tx4939_ata_init(void);
+void tx4939_rtc_init(void);
 
 #endif /* __ASM_TXX9_TX4939_H */
diff --git a/arch/mips/txx9/generic/setup_tx4939.c b/arch/mips/txx9/generic/setup_tx4939.c
index 6c0049a5bbc1..55440967b3a8 100644
--- a/arch/mips/txx9/generic/setup_tx4939.c
+++ b/arch/mips/txx9/generic/setup_tx4939.c
@@ -435,6 +435,28 @@ void __init tx4939_ata_init(void)
                 platform_device_register(&ata1_dev);
 }
 
+void __init tx4939_rtc_init(void)
+{
+        static struct resource res[] = {
+                {
+                        .start = TX4939_RTC_REG & 0xfffffffffULL,
+                        .end = (TX4939_RTC_REG & 0xfffffffffULL) + 0x100 - 1,
+                        .flags = IORESOURCE_MEM,
+                }, {
+                        .start = TXX9_IRQ_BASE + TX4939_IR_RTC,
+                        .flags = IORESOURCE_IRQ,
+                },
+        };
+        static struct platform_device rtc_dev = {
+                .name = "tx4939rtc",
+                .id = -1,
+                .num_resources = ARRAY_SIZE(res),
+                .resource = res,
+        };
+
+        platform_device_register(&rtc_dev);
+}
+
 static void __init tx4939_stop_unused_modules(void)
 {
         __u64 pcfg, rst = 0, ckd = 0;
diff --git a/arch/mips/txx9/rbtx4939/setup.c b/arch/mips/txx9/rbtx4939/setup.c
index 98fbd9391bf8..656603b85b71 100644
--- a/arch/mips/txx9/rbtx4939/setup.c
+++ b/arch/mips/txx9/rbtx4939/setup.c
@@ -336,6 +336,7 @@ static void __init rbtx4939_device_init(void)
         rbtx4939_led_setup();
         tx4939_wdt_init();
         tx4939_ata_init();
+        tx4939_rtc_init();
 }
 
 static void __init rbtx4939_setup(void)