omap3: cm-t3517: add support for v3020 rtc

add support for v3020 rtc.

Signed-off-by: Igor Grinberg <grinberg@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>

1 files changed, 36 insertions, 0 deletions

diff --git a/arch/arm/mach-omap2/board-cm-t3517.c b/arch/arm/mach-omap2/board-cm-t3517.c
index 507d2d510787..2b41c6de274d 100644
--- a/arch/arm/mach-omap2/board-cm-t3517.c
+++ b/arch/arm/mach-omap2/board-cm-t3517.c
@@ -27,6 +27,7 @@
 #include <linux/platform_device.h>
 #include <linux/gpio.h>
 #include <linux/leds.h>
+#include <linux/rtc-v3020.h>
 
 #include <asm/mach-types.h>
 #include <asm/mach/arch.h>
@@ -69,6 +70,35 @@ static void __init cm_t3517_init_leds(void)
 static inline void cm_t3517_init_leds(void) {}
 #endif
 
+#if defined(CONFIG_RTC_DRV_V3020) || defined(CONFIG_RTC_DRV_V3020_MODULE)
+#define RTC_IO_GPIO             (153)
+#define RTC_WR_GPIO             (154)
+#define RTC_RD_GPIO             (160)
+#define RTC_CS_GPIO             (163)
+
+struct v3020_platform_data cm_t3517_v3020_pdata = {
+        .use_gpio       = 1,
+        .gpio_cs        = RTC_CS_GPIO,
+        .gpio_wr        = RTC_WR_GPIO,
+        .gpio_rd        = RTC_RD_GPIO,
+        .gpio_io        = RTC_IO_GPIO,
+};
+
+static struct platform_device cm_t3517_rtc_device = {
+        .name           = "v3020",
+        .id             = -1,
+        .dev            = {
+                .platform_data = &cm_t3517_v3020_pdata,
+        }
+};
+
+static void __init cm_t3517_init_rtc(void)
+{
+        platform_device_register(&cm_t3517_rtc_device);
+}
+#else
+static inline void cm_t3517_init_rtc(void) {}
+#endif
 
 static struct omap_board_config_kernel cm_t3517_config[] __initdata = {
 };
@@ -86,6 +116,11 @@ static void __init cm_t3517_init_irq(void)
 static struct omap_board_mux board_mux[] __initdata = {
         /* GPIO186 - Green LED */
         OMAP3_MUX(SYS_CLKOUT2, OMAP_MUX_MODE4 | OMAP_PIN_OUTPUT),
+        /* RTC GPIOs: IO, WR#, RD#, CS# */
+        OMAP3_MUX(MCBSP4_DR, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
+        OMAP3_MUX(MCBSP4_DX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
+        OMAP3_MUX(MCBSP_CLKS, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
+        OMAP3_MUX(UART3_CTS_RCTX, OMAP_MUX_MODE4 | OMAP_PIN_INPUT),
 
         { .reg_offset = OMAP_MUX_TERMINATOR },
 };
@@ -95,6 +130,7 @@ static void __init cm_t3517_init(void)
         omap3_mux_init(board_mux, OMAP_PACKAGE_CBB);
         omap_serial_init();
         cm_t3517_init_leds();
+        cm_t3517_init_rtc();
 }
 
 MACHINE_START(CM_T3517, "Compulab CM-T3517")