ARM: mmp: enable rtc in pxa910

Support rtc-sa1100 driver in pxa910.

Signed-off-by: Haojian Zhuang <haojian.zhuang@marvell.com>

diff --git a/arch/arm/mach-mmp/include/mach/pxa910.h b/arch/arm/mach-mmp/include/mach/pxa910.h
index 4de13ab..e2e1f1e 100644 (file)
--- a/arch/arm/mach-mmp/include/mach/pxa910.h
+++ b/arch/arm/mach-mmp/include/mach/pxa910.h
@@ -22,6 +22,7 @@ extern struct pxa_device_desc pxa910_device_pwm4;
 extern struct pxa_device_desc pxa910_device_nand;
 
 extern struct platform_device pxa910_device_gpio;
+extern struct platform_device pxa910_device_rtc;
 
 static inline int pxa910_add_uart(int id)
 {

diff --git a/arch/arm/mach-mmp/include/mach/regs-apbc.h b/arch/arm/mach-mmp/include/mach/regs-apbc.h
index 1a96585..8a37fb0 100644 (file)
--- a/arch/arm/mach-mmp/include/mach/regs-apbc.h
+++ b/arch/arm/mach-mmp/include/mach/regs-apbc.h
@@ -57,6 +57,7 @@
 #define APBC_PXA910_SSP1       APBC_REG(0x01c)
 #define APBC_PXA910_SSP2       APBC_REG(0x020)
 #define APBC_PXA910_IPC                APBC_REG(0x024)
+#define APBC_PXA910_RTC                APBC_REG(0x028)
 #define APBC_PXA910_TWSI0      APBC_REG(0x02c)
 #define APBC_PXA910_KPC                APBC_REG(0x030)
 #define APBC_PXA910_TIMERS     APBC_REG(0x034)

diff --git a/arch/arm/mach-mmp/include/mach/regs-rtc.h b/arch/arm/mach-mmp/include/mach/regs-rtc.h
new file mode 100644 (file)
index 0000000..5bff886
--- /dev/null
+++ b/arch/arm/mach-mmp/include/mach/regs-rtc.h
@@ -0,0 +1,23 @@
+#ifndef __ASM_MACH_REGS_RTC_H
+#define __ASM_MACH_REGS_RTC_H
+
+#include <mach/addr-map.h>
+
+#define RTC_VIRT_BASE  (APB_VIRT_BASE + 0x10000)
+#define RTC_REG(x)     (*((volatile u32 __iomem *)(RTC_VIRT_BASE + (x))))
+
+/*
+ * Real Time Clock
+ */
+
+#define RCNR           RTC_REG(0x00)   /* RTC Count Register */
+#define RTAR           RTC_REG(0x04)   /* RTC Alarm Register */
+#define RTSR           RTC_REG(0x08)   /* RTC Status Register */
+#define RTTR           RTC_REG(0x0C)   /* RTC Timer Trim Register */
+
+#define RTSR_HZE       (1 << 3)        /* HZ interrupt enable */
+#define RTSR_ALE       (1 << 2)        /* RTC alarm interrupt enable */
+#define RTSR_HZ                (1 << 1)        /* HZ rising-edge detected */
+#define RTSR_AL                (1 << 0)        /* RTC alarm detected */
+
+#endif /* __ASM_MACH_REGS_RTC_H */

diff --git a/arch/arm/mach-mmp/pxa910.c b/arch/arm/mach-mmp/pxa910.c
index 3241a25..b6e1527 100644 (file)
--- a/arch/arm/mach-mmp/pxa910.c
+++ b/arch/arm/mach-mmp/pxa910.c
@@ -92,6 +92,7 @@ static APBC_CLK(pwm2, PXA910_PWM2, 1, 13000000);
 static APBC_CLK(pwm3, PXA910_PWM3, 1, 13000000);
 static APBC_CLK(pwm4, PXA910_PWM4, 1, 13000000);
 static APBC_CLK(gpio, PXA910_GPIO, 0, 13000000);
+static APBC_CLK(rtc, PXA910_RTC, 8, 32768);
 
 static APMU_CLK(nand, NAND, 0x19b, 156000000);
 static APMU_CLK(u2o, USB, 0x1b, 480000000);
@@ -109,6 +110,7 @@ static struct clk_lookup pxa910_clkregs[] = {
        INIT_CLKREG(&clk_nand, "pxa3xx-nand", NULL),
        INIT_CLKREG(&clk_gpio, "pxa-gpio", NULL),
        INIT_CLKREG(&clk_u2o, "pxa-u2o", "U2OCLK"),
+       INIT_CLKREG(&clk_rtc, "sa1100-rtc", NULL),
 };
 
 static int __init pxa910_init(void)
@@ -183,3 +185,28 @@ struct platform_device pxa910_device_gpio = {
        .num_resources  = ARRAY_SIZE(pxa910_resource_gpio),
        .resource       = pxa910_resource_gpio,
 };
+
+static struct resource pxa910_resource_rtc[] = {
+       {
+               .start  = 0xd4010000,
+               .end    = 0xd401003f,
+               .flags  = IORESOURCE_MEM,
+       }, {
+               .start  = IRQ_PXA910_RTC_INT,
+               .end    = IRQ_PXA910_RTC_INT,
+               .name   = "rtc 1Hz",
+               .flags  = IORESOURCE_IRQ,
+       }, {
+               .start  = IRQ_PXA910_RTC_ALARM,
+               .end    = IRQ_PXA910_RTC_ALARM,
+               .name   = "rtc alarm",
+               .flags  = IORESOURCE_IRQ,
+       },
+};
+
+struct platform_device pxa910_device_rtc = {
+       .name           = "sa1100-rtc",
+       .id             = -1,
+       .num_resources  = ARRAY_SIZE(pxa910_resource_rtc),
+       .resource       = pxa910_resource_rtc,
+};

diff --git a/arch/arm/mach-mmp/ttc_dkb.c b/arch/arm/mach-mmp/ttc_dkb.c
index 5ac5d58..e72c709 100644 (file)
--- a/arch/arm/mach-mmp/ttc_dkb.c
+++ b/arch/arm/mach-mmp/ttc_dkb.c
@@ -124,6 +124,7 @@ static struct platform_device ttc_dkb_device_onenand = {
 
 static struct platform_device *ttc_dkb_devices[] = {
        &pxa910_device_gpio,
+       &pxa910_device_rtc,
        &ttc_dkb_device_onenand,
 };