arm:omap:am335x: Add cpuidle related board data

[sitara-epos/sitara-epos-kernel.git] / arch / arm / mach-omap2 / board-am335xevm.c

diff --git a/arch/arm/mach-omap2/board-am335xevm.c b/arch/arm/mach-omap2/board-am335xevm.c
index e83e0f9ce0491f3e2a198ae1f88026ef46e9aaaa..588917333ca3ea090a1175aa15f15c4fdb88542b 100644 (file)
--- a/arch/arm/mach-omap2/board-am335xevm.c
+++ b/arch/arm/mach-omap2/board-am335xevm.c
@@ -52,6 +52,7 @@
 #include <plat/mmc.h>
 
 #include "board-flash.h"
+#include "cpuidle33xx.h"
 #include "mux.h"
 #include "devices.h"
 #include "hsmmc.h"
@@ -1838,8 +1839,56 @@ static void __init clkout2_enable(void)
        setup_pin_mux(clkout2_pin_mux);
 }
 
+void __iomem * __init am33xx_get_mem_ctlr(void)
+{
+       void __iomem *am33xx_emif_base;
+
+       am33xx_emif_base = ioremap(AM33XX_EMIF0_BASE, SZ_32K);
+
+       if (!am33xx_emif_base)
+               pr_warning("%s: Unable to map DDR2 controller", __func__);
+
+       return am33xx_emif_base;
+}
+
+static struct resource am33xx_cpuidle_resources[] = {
+       {
+               .start          = AM33XX_EMIF0_BASE,
+               .end            = AM33XX_EMIF0_BASE + SZ_32K - 1,
+               .flags          = IORESOURCE_MEM,
+       },
+};
+
+/* AM33XX devices support DDR2 power down */
+static struct am33xx_cpuidle_config am33xx_cpuidle_pdata = {
+       .ddr2_pdown     = 1,
+};
+
+static struct platform_device am33xx_cpuidle_device = {
+       .name                   = "cpuidle-am33xx",
+       .num_resources          = ARRAY_SIZE(am33xx_cpuidle_resources),
+       .resource               = am33xx_cpuidle_resources,
+       .dev = {
+               .platform_data  = &am33xx_cpuidle_pdata,
+       },
+};
+
+static void __init am33xx_cpuidle_init(void)
+{
+       int ret;
+
+       am33xx_cpuidle_pdata.emif_base = am33xx_get_mem_ctlr();
+
+       ret = platform_device_register(&am33xx_cpuidle_device);
+
+       if (ret)
+               pr_warning("AM33XX cpuidle registration failed\n");
+
+}
+
 static void __init am335x_evm_init(void)
 {
+       am33xx_cpuidle_init();
        am33xx_mux_init(board_mux);
        omap_serial_init();
        am335x_rtc_init();