Merge branch 'pm-hwmod-wdog' into pm-hwmods

8 files changed, 400 insertions, 76 deletions

diff --git a/arch/arm/mach-omap1/devices.c b/arch/arm/mach-omap1/devices.c
index aa0725608fb1..a919366a90dd 100644
--- a/arch/arm/mach-omap1/devices.c
+++ b/arch/arm/mach-omap1/devices.c
@@ -232,3 +232,30 @@ static int __init omap1_init_devices(void)
 }
 arch_initcall(omap1_init_devices);
 
+#if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
+
+static struct resource wdt_resources[] = {
+        {
+                .start          = 0xfffeb000,
+                .end            = 0xfffeb07F,
+                .flags          = IORESOURCE_MEM,
+        },
+};
+
+static struct platform_device omap_wdt_device = {
+        .name      = "omap_wdt",
+        .id          = -1,
+        .num_resources  = ARRAY_SIZE(wdt_resources),
+        .resource       = wdt_resources,
+};
+
+static int __init omap_init_wdt(void)
+{
+        if (!cpu_is_omap16xx())
+                return;
+
+        platform_device_register(&omap_wdt_device);
+        return 0;
+}
+subsys_initcall(omap_init_wdt);
+#endif
diff --git a/arch/arm/mach-omap2/devices.c b/arch/arm/mach-omap2/devices.c
index 9e5d51bee94a..8e2f0aa310b5 100644
--- a/arch/arm/mach-omap2/devices.c
+++ b/arch/arm/mach-omap2/devices.c
@@ -15,6 +15,7 @@
 #include <linux/platform_device.h>
 #include <linux/io.h>
 #include <linux/clk.h>
+#include <linux/err.h>
 
 #include <mach/hardware.h>
 #include <mach/irqs.h>
@@ -28,6 +29,8 @@
 #include <mach/gpio.h>
 #include <plat/mmc.h>
 #include <plat/dma.h>
+#include <plat/omap_hwmod.h>
+#include <plat/omap_device.h>
 
 #include "mux.h"
 
@@ -932,3 +935,39 @@ static int __init omap2_init_devices(void)
         return 0;
 }
 arch_initcall(omap2_init_devices);
+
+#if defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
+struct omap_device_pm_latency omap_wdt_latency[] = {
+        [0] = {
+                .deactivate_func = omap_device_idle_hwmods,
+                .activate_func   = omap_device_enable_hwmods,
+                .flags           = OMAP_DEVICE_LATENCY_AUTO_ADJUST,
+        },
+};
+
+static int __init omap_init_wdt(void)
+{
+        int id = -1;
+        struct omap_device *od;
+        struct omap_hwmod *oh;
+        char *oh_name = "wd_timer2";
+        char *dev_name = "omap_wdt";
+
+        if (!cpu_class_is_omap2())
+                return 0;
+
+        oh = omap_hwmod_lookup(oh_name);
+        if (!oh) {
+                pr_err("Could not look up wd_timer%d hwmod\n", id);
+                return -EINVAL;
+        }
+
+        od = omap_device_build(dev_name, id, oh, NULL, 0,
+                                omap_wdt_latency,
+                                ARRAY_SIZE(omap_wdt_latency), 0);
+        WARN(IS_ERR(od), "Cant build omap_device for %s:%s.\n",
+                                dev_name, oh->name);
+        return 0;
+}
+subsys_initcall(omap_init_wdt);
+#endif
diff --git a/arch/arm/mach-omap2/omap_hwmod_2420_data.c b/arch/arm/mach-omap2/omap_hwmod_2420_data.c
index 3cc768e8bc04..66678d98ad96 100644
--- a/arch/arm/mach-omap2/omap_hwmod_2420_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_2420_data.c
@@ -19,6 +19,7 @@
 #include "omap_hwmod_common_data.h"
 
 #include "prm-regbits-24xx.h"
+#include "cm-regbits-24xx.h"
 
 /*
  * OMAP2420 hardware module integration data
@@ -33,6 +34,7 @@ static struct omap_hwmod omap2420_mpu_hwmod;
 static struct omap_hwmod omap2420_iva_hwmod;
 static struct omap_hwmod omap2420_l3_main_hwmod;
 static struct omap_hwmod omap2420_l4_core_hwmod;
+static struct omap_hwmod omap2420_wd_timer2_hwmod;
 
 /* L3 -> L4_CORE interface */
 static struct omap_hwmod_ocp_if omap2420_l3_main__l4_core = {
@@ -165,12 +167,74 @@ static struct omap_hwmod omap2420_iva_hwmod = {
         .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP2420)
 };
 
+/* l4_wkup -> wd_timer2 */
+static struct omap_hwmod_addr_space omap2420_wd_timer2_addrs[] = {
+        {
+                .pa_start       = 0x48022000,
+                .pa_end         = 0x4802207f,
+                .flags          = ADDR_TYPE_RT
+        },
+};
+
+static struct omap_hwmod_ocp_if omap2420_l4_wkup__wd_timer2 = {
+        .master         = &omap2420_l4_wkup_hwmod,
+        .slave          = &omap2420_wd_timer2_hwmod,
+        .clk            = "mpu_wdt_ick",
+        .addr           = omap2420_wd_timer2_addrs,
+        .addr_cnt       = ARRAY_SIZE(omap2420_wd_timer2_addrs),
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/*
+ * 'wd_timer' class
+ * 32-bit watchdog upward counter that generates a pulse on the reset pin on
+ * overflow condition
+ */
+
+static struct omap_hwmod_class_sysconfig omap2420_wd_timer_sysc = {
+        .rev_offs       = 0x0000,
+        .sysc_offs      = 0x0010,
+        .syss_offs      = 0x0014,
+        .sysc_flags     = (SYSC_HAS_EMUFREE | SYSC_HAS_SOFTRESET |
+                           SYSC_HAS_AUTOIDLE),
+        .sysc_fields    = &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap2420_wd_timer_hwmod_class = {
+        .name = "wd_timer",
+        .sysc = &omap2420_wd_timer_sysc,
+};
+
+/* wd_timer2 */
+static struct omap_hwmod_ocp_if *omap2420_wd_timer2_slaves[] = {
+        &omap2420_l4_wkup__wd_timer2,
+};
+
+static struct omap_hwmod omap2420_wd_timer2_hwmod = {
+        .name           = "wd_timer2",
+        .class          = &omap2420_wd_timer_hwmod_class,
+        .main_clk       = "mpu_wdt_fck",
+        .prcm           = {
+                .omap2 = {
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP24XX_EN_MPU_WDT_SHIFT,
+                        .module_offs = WKUP_MOD,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP24XX_ST_MPU_WDT_SHIFT,
+                },
+        },
+        .slaves         = omap2420_wd_timer2_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap2420_wd_timer2_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP2420),
+};
+
 static __initdata struct omap_hwmod *omap2420_hwmods[] = {
         &omap2420_l3_main_hwmod,
         &omap2420_l4_core_hwmod,
         &omap2420_l4_wkup_hwmod,
         &omap2420_mpu_hwmod,
         &omap2420_iva_hwmod,
+        &omap2420_wd_timer2_hwmod,
         NULL,
 };
 
diff --git a/arch/arm/mach-omap2/omap_hwmod_2430_data.c b/arch/arm/mach-omap2/omap_hwmod_2430_data.c
index 4526628ed287..7ec927aa23de 100644
--- a/arch/arm/mach-omap2/omap_hwmod_2430_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_2430_data.c
@@ -19,6 +19,7 @@
 #include "omap_hwmod_common_data.h"
 
 #include "prm-regbits-24xx.h"
+#include "cm-regbits-24xx.h"
 
 /*
  * OMAP2430 hardware module integration data
@@ -33,6 +34,7 @@ static struct omap_hwmod omap2430_mpu_hwmod;
 static struct omap_hwmod omap2430_iva_hwmod;
 static struct omap_hwmod omap2430_l3_main_hwmod;
 static struct omap_hwmod omap2430_l4_core_hwmod;
+static struct omap_hwmod omap2430_wd_timer2_hwmod;
 
 /* L3 -> L4_CORE interface */
 static struct omap_hwmod_ocp_if omap2430_l3_main__l4_core = {
@@ -165,12 +167,74 @@ static struct omap_hwmod omap2430_iva_hwmod = {
         .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP2430)
 };
 
+/* l4_wkup -> wd_timer2 */
+static struct omap_hwmod_addr_space omap2430_wd_timer2_addrs[] = {
+        {
+                .pa_start       = 0x49016000,
+                .pa_end         = 0x4901607f,
+                .flags          = ADDR_TYPE_RT
+        },
+};
+
+static struct omap_hwmod_ocp_if omap2430_l4_wkup__wd_timer2 = {
+        .master         = &omap2430_l4_wkup_hwmod,
+        .slave          = &omap2430_wd_timer2_hwmod,
+        .clk            = "mpu_wdt_ick",
+        .addr           = omap2430_wd_timer2_addrs,
+        .addr_cnt       = ARRAY_SIZE(omap2430_wd_timer2_addrs),
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/*
+ * 'wd_timer' class
+ * 32-bit watchdog upward counter that generates a pulse on the reset pin on
+ * overflow condition
+ */
+
+static struct omap_hwmod_class_sysconfig omap2430_wd_timer_sysc = {
+        .rev_offs       = 0x0,
+        .sysc_offs      = 0x0010,
+        .syss_offs      = 0x0014,
+        .sysc_flags     = (SYSC_HAS_EMUFREE | SYSC_HAS_SOFTRESET |
+                           SYSC_HAS_AUTOIDLE),
+        .sysc_fields    = &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap2430_wd_timer_hwmod_class = {
+        .name = "wd_timer",
+        .sysc = &omap2430_wd_timer_sysc,
+};
+
+/* wd_timer2 */
+static struct omap_hwmod_ocp_if *omap2430_wd_timer2_slaves[] = {
+        &omap2430_l4_wkup__wd_timer2,
+};
+
+static struct omap_hwmod omap2430_wd_timer2_hwmod = {
+        .name           = "wd_timer2",
+        .class          = &omap2430_wd_timer_hwmod_class,
+        .main_clk       = "mpu_wdt_fck",
+        .prcm           = {
+                .omap2 = {
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP24XX_EN_MPU_WDT_SHIFT,
+                        .module_offs = WKUP_MOD,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP24XX_ST_MPU_WDT_SHIFT,
+                },
+        },
+        .slaves         = omap2430_wd_timer2_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap2430_wd_timer2_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP2430),
+};
+
 static __initdata struct omap_hwmod *omap2430_hwmods[] = {
         &omap2430_l3_main_hwmod,
         &omap2430_l4_core_hwmod,
         &omap2430_l4_wkup_hwmod,
         &omap2430_mpu_hwmod,
         &omap2430_iva_hwmod,
+        &omap2430_wd_timer2_hwmod,
         NULL,
 };
 
diff --git a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
index 5d8eb58ba5e3..5bfe9c933144 100644
--- a/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_3xxx_data.c
@@ -21,6 +21,7 @@
 #include "omap_hwmod_common_data.h"
 
 #include "prm-regbits-34xx.h"
+#include "cm-regbits-34xx.h"
 
 /*
  * OMAP3xxx hardware module integration data
@@ -36,6 +37,7 @@ static struct omap_hwmod omap3xxx_iva_hwmod;
 static struct omap_hwmod omap3xxx_l3_main_hwmod;
 static struct omap_hwmod omap3xxx_l4_core_hwmod;
 static struct omap_hwmod omap3xxx_l4_per_hwmod;
+static struct omap_hwmod omap3xxx_wd_timer2_hwmod;
 
 /* L3 -> L4_CORE interface */
 static struct omap_hwmod_ocp_if omap3xxx_l3_main__l4_core = {
@@ -197,6 +199,69 @@ static struct omap_hwmod omap3xxx_iva_hwmod = {
         .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3430)
 };
 
+/* l4_wkup -> wd_timer2 */
+static struct omap_hwmod_addr_space omap3xxx_wd_timer2_addrs[] = {
+        {
+                .pa_start       = 0x48314000,
+                .pa_end         = 0x4831407f,
+                .flags          = ADDR_TYPE_RT
+        },
+};
+
+static struct omap_hwmod_ocp_if omap3xxx_l4_wkup__wd_timer2 = {
+        .master         = &omap3xxx_l4_wkup_hwmod,
+        .slave          = &omap3xxx_wd_timer2_hwmod,
+        .clk            = "wdt2_ick",
+        .addr           = omap3xxx_wd_timer2_addrs,
+        .addr_cnt       = ARRAY_SIZE(omap3xxx_wd_timer2_addrs),
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/*
+ * 'wd_timer' class
+ * 32-bit watchdog upward counter that generates a pulse on the reset pin on
+ * overflow condition
+ */
+
+static struct omap_hwmod_class_sysconfig omap3xxx_wd_timer_sysc = {
+        .rev_offs       = 0x0000,
+        .sysc_offs      = 0x0010,
+        .syss_offs      = 0x0014,
+        .sysc_flags     = (SYSC_HAS_SIDLEMODE | SYSC_HAS_EMUFREE |
+                           SYSC_HAS_ENAWAKEUP | SYSC_HAS_SOFTRESET |
+                           SYSC_HAS_AUTOIDLE | SYSC_HAS_CLOCKACTIVITY),
+        .idlemodes      = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+        .sysc_fields    = &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap3xxx_wd_timer_hwmod_class = {
+        .name = "wd_timer",
+        .sysc = &omap3xxx_wd_timer_sysc,
+};
+
+/* wd_timer2 */
+static struct omap_hwmod_ocp_if *omap3xxx_wd_timer2_slaves[] = {
+        &omap3xxx_l4_wkup__wd_timer2,
+};
+
+static struct omap_hwmod omap3xxx_wd_timer2_hwmod = {
+        .name           = "wd_timer2",
+        .class          = &omap3xxx_wd_timer_hwmod_class,
+        .main_clk       = "wdt2_fck",
+        .prcm           = {
+                .omap2 = {
+                        .prcm_reg_id = 1,
+                        .module_bit = OMAP3430_EN_WDT2_SHIFT,
+                        .module_offs = WKUP_MOD,
+                        .idlest_reg_id = 1,
+                        .idlest_idle_bit = OMAP3430_ST_WDT2_SHIFT,
+                },
+        },
+        .slaves         = omap3xxx_wd_timer2_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap3xxx_wd_timer2_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP3430),
+};
+
 static __initdata struct omap_hwmod *omap3xxx_hwmods[] = {
         &omap3xxx_l3_main_hwmod,
         &omap3xxx_l4_core_hwmod,
@@ -204,6 +269,7 @@ static __initdata struct omap_hwmod *omap3xxx_hwmods[] = {
         &omap3xxx_l4_wkup_hwmod,
         &omap3xxx_mpu_hwmod,
         &omap3xxx_iva_hwmod,
+        &omap3xxx_wd_timer2_hwmod,
         NULL,
 };
 
diff --git a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
index e20b0eebc6d9..9523b4c9537f 100644
--- a/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
+++ b/arch/arm/mach-omap2/omap_hwmod_44xx_data.c
@@ -452,6 +452,136 @@ static struct omap_hwmod omap44xx_mpu_hwmod = {
         .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
 };
 
+/*
+ * 'wd_timer' class
+ * 32-bit watchdog upward counter that generates a pulse on the reset pin on
+ * overflow condition
+ */
+
+static struct omap_hwmod_class_sysconfig omap44xx_wd_timer_sysc = {
+        .rev_offs       = 0x0000,
+        .sysc_offs      = 0x0010,
+        .syss_offs      = 0x0014,
+        .sysc_flags     = (SYSC_HAS_SIDLEMODE | SYSC_HAS_EMUFREE |
+                           SYSC_HAS_SOFTRESET),
+        .idlemodes      = (SIDLE_FORCE | SIDLE_NO | SIDLE_SMART),
+        .sysc_fields    = &omap_hwmod_sysc_type1,
+};
+
+static struct omap_hwmod_class omap44xx_wd_timer_hwmod_class = {
+        .name = "wd_timer",
+        .sysc = &omap44xx_wd_timer_sysc,
+};
+
+/* wd_timer2 */
+static struct omap_hwmod omap44xx_wd_timer2_hwmod;
+static struct omap_hwmod_irq_info omap44xx_wd_timer2_irqs[] = {
+        { .irq = 80 + OMAP44XX_IRQ_GIC_START },
+};
+
+static struct omap_hwmod_addr_space omap44xx_wd_timer2_addrs[] = {
+        {
+                .pa_start       = 0x4a314000,
+                .pa_end         = 0x4a31407f,
+                .flags          = ADDR_TYPE_RT
+        },
+};
+
+/* l4_wkup -> wd_timer2 */
+static struct omap_hwmod_ocp_if omap44xx_l4_wkup__wd_timer2 = {
+        .master         = &omap44xx_l4_wkup_hwmod,
+        .slave          = &omap44xx_wd_timer2_hwmod,
+        .clk            = "l4_wkup_clk_mux_ck",
+        .addr           = omap44xx_wd_timer2_addrs,
+        .addr_cnt       = ARRAY_SIZE(omap44xx_wd_timer2_addrs),
+        .user           = OCP_USER_MPU | OCP_USER_SDMA,
+};
+
+/* wd_timer2 slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_wd_timer2_slaves[] = {
+        &omap44xx_l4_wkup__wd_timer2,
+};
+
+static struct omap_hwmod omap44xx_wd_timer2_hwmod = {
+        .name           = "wd_timer2",
+        .class          = &omap44xx_wd_timer_hwmod_class,
+        .mpu_irqs       = omap44xx_wd_timer2_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(omap44xx_wd_timer2_irqs),
+        .main_clk       = "wd_timer2_fck",
+        .prcm = {
+                .omap4 = {
+                        .clkctrl_reg = OMAP4430_CM_WKUP_WDT2_CLKCTRL,
+                },
+        },
+        .slaves         = omap44xx_wd_timer2_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap44xx_wd_timer2_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
+/* wd_timer3 */
+static struct omap_hwmod omap44xx_wd_timer3_hwmod;
+static struct omap_hwmod_irq_info omap44xx_wd_timer3_irqs[] = {
+        { .irq = 36 + OMAP44XX_IRQ_GIC_START },
+};
+
+static struct omap_hwmod_addr_space omap44xx_wd_timer3_addrs[] = {
+        {
+                .pa_start       = 0x40130000,
+                .pa_end         = 0x4013007f,
+                .flags          = ADDR_TYPE_RT
+        },
+};
+
+/* l4_abe -> wd_timer3 */
+static struct omap_hwmod_ocp_if omap44xx_l4_abe__wd_timer3 = {
+        .master         = &omap44xx_l4_abe_hwmod,
+        .slave          = &omap44xx_wd_timer3_hwmod,
+        .clk            = "ocp_abe_iclk",
+        .addr           = omap44xx_wd_timer3_addrs,
+        .addr_cnt       = ARRAY_SIZE(omap44xx_wd_timer3_addrs),
+        .user           = OCP_USER_MPU,
+};
+
+/* l4_abe -> wd_timer3 (dma) */
+static struct omap_hwmod_addr_space omap44xx_wd_timer3_dma_addrs[] = {
+        {
+                .pa_start       = 0x49030000,
+                .pa_end         = 0x4903007f,
+                .flags          = ADDR_TYPE_RT
+        },
+};
+
+static struct omap_hwmod_ocp_if omap44xx_l4_abe__wd_timer3_dma = {
+        .master         = &omap44xx_l4_abe_hwmod,
+        .slave          = &omap44xx_wd_timer3_hwmod,
+        .clk            = "ocp_abe_iclk",
+        .addr           = omap44xx_wd_timer3_dma_addrs,
+        .addr_cnt       = ARRAY_SIZE(omap44xx_wd_timer3_dma_addrs),
+        .user           = OCP_USER_SDMA,
+};
+
+/* wd_timer3 slave ports */
+static struct omap_hwmod_ocp_if *omap44xx_wd_timer3_slaves[] = {
+        &omap44xx_l4_abe__wd_timer3,
+        &omap44xx_l4_abe__wd_timer3_dma,
+};
+
+static struct omap_hwmod omap44xx_wd_timer3_hwmod = {
+        .name           = "wd_timer3",
+        .class          = &omap44xx_wd_timer_hwmod_class,
+        .mpu_irqs       = omap44xx_wd_timer3_irqs,
+        .mpu_irqs_cnt   = ARRAY_SIZE(omap44xx_wd_timer3_irqs),
+        .main_clk       = "wd_timer3_fck",
+        .prcm = {
+                .omap4 = {
+                        .clkctrl_reg = OMAP4430_CM1_ABE_WDT3_CLKCTRL,
+                },
+        },
+        .slaves         = omap44xx_wd_timer3_slaves,
+        .slaves_cnt     = ARRAY_SIZE(omap44xx_wd_timer3_slaves),
+        .omap_chip      = OMAP_CHIP_INIT(CHIP_IS_OMAP4430),
+};
+
 static __initdata struct omap_hwmod *omap44xx_hwmods[] = {
         /* dmm class */
         &omap44xx_dmm_hwmod,
@@ -472,6 +602,9 @@ static __initdata struct omap_hwmod *omap44xx_hwmods[] = {
 
         /* mpu class */
         &omap44xx_mpu_hwmod,
+        /* wd_timer class */
+        &omap44xx_wd_timer2_hwmod,
+        &omap44xx_wd_timer3_hwmod,
         NULL,
 };
 
diff --git a/arch/arm/plat-omap/devices.c b/arch/arm/plat-omap/devices.c
index d1920be7833b..8e88e0e5d524 100644
--- a/arch/arm/plat-omap/devices.c
+++ b/arch/arm/plat-omap/devices.c
@@ -232,46 +232,6 @@ static void omap_init_uwire(void)
 static inline void omap_init_uwire(void) {}
 #endif
 
-/*-------------------------------------------------------------------------*/
-
-#if     defined(CONFIG_OMAP_WATCHDOG) || defined(CONFIG_OMAP_WATCHDOG_MODULE)
-
-static struct resource wdt_resources[] = {
-        {
-                .flags          = IORESOURCE_MEM,
-        },
-};
-
-static struct platform_device omap_wdt_device = {
-        .name      = "omap_wdt",
-        .id          = -1,
-        .num_resources  = ARRAY_SIZE(wdt_resources),
-        .resource       = wdt_resources,
-};
-
-static void omap_init_wdt(void)
-{
-        if (cpu_is_omap16xx())
-                wdt_resources[0].start = 0xfffeb000;
-        else if (cpu_is_omap2420())
-                wdt_resources[0].start = 0x48022000; /* WDT2 */
-        else if (cpu_is_omap2430())
-                wdt_resources[0].start = 0x49016000; /* WDT2 */
-        else if (cpu_is_omap343x())
-                wdt_resources[0].start = 0x48314000; /* WDT2 */
-        else if (cpu_is_omap44xx())
-                wdt_resources[0].start = 0x4a314000;
-        else
-                return;
-
-        wdt_resources[0].end = wdt_resources[0].start + 0x4f;
-
-        (void) platform_device_register(&omap_wdt_device);
-}
-#else
-static inline void omap_init_wdt(void) {}
-#endif
-
 /*
  * This gets called after board-specific INIT_MACHINE, and initializes most
  * on-chip peripherals accessible on this board (except for few like USB):
@@ -300,7 +260,6 @@ static int __init omap_init_devices(void)
         omap_init_rng();
         omap_init_mcpdm();
         omap_init_uwire();
-        omap_init_wdt();
         return 0;
 }
 arch_initcall(omap_init_devices);
diff --git a/drivers/watchdog/omap_wdt.c b/drivers/watchdog/omap_wdt.c
index 76b58abf4451..dbbc5801a0c3 100644
--- a/drivers/watchdog/omap_wdt.c
+++ b/drivers/watchdog/omap_wdt.c
@@ -38,11 +38,11 @@
 #include <linux/err.h>
 #include <linux/platform_device.h>
 #include <linux/moduleparam.h>
-#include <linux/clk.h>
 #include <linux/bitops.h>
 #include <linux/io.h>
 #include <linux/uaccess.h>
 #include <linux/slab.h>
+#include <linux/pm_runtime.h>
 #include <mach/hardware.h>
 #include <plat/prcm.h>
 
@@ -61,8 +61,6 @@ struct omap_wdt_dev {
         void __iomem    *base;          /* physical */
         struct device   *dev;
         int             omap_wdt_users;
-        struct clk      *ick;
-        struct clk      *fck;
         struct resource *mem;
         struct miscdevice omap_wdt_miscdev;
 };
@@ -146,8 +144,7 @@ static int omap_wdt_open(struct inode *inode, struct file *file)
         if (test_and_set_bit(1, (unsigned long *)&(wdev->omap_wdt_users)))
                 return -EBUSY;
 
-        clk_enable(wdev->ick);    /* Enable the interface clock */
-        clk_enable(wdev->fck);    /* Enable the functional clock */
+        pm_runtime_get_sync(wdev->dev);
 
         /* initialize prescaler */
         while (__raw_readl(base + OMAP_WATCHDOG_WPS) & 0x01)
@@ -177,8 +174,7 @@ static int omap_wdt_release(struct inode *inode, struct file *file)
 
         omap_wdt_disable(wdev);
 
-        clk_disable(wdev->ick);
-        clk_disable(wdev->fck);
+        pm_runtime_put_sync(wdev->dev);
 #else
         printk(KERN_CRIT "omap_wdt: Unexpected close, not stopping!\n");
 #endif
@@ -292,19 +288,7 @@ static int __devinit omap_wdt_probe(struct platform_device *pdev)
 
         wdev->omap_wdt_users = 0;
         wdev->mem = mem;
-
-        wdev->ick = clk_get(&pdev->dev, "ick");
-        if (IS_ERR(wdev->ick)) {
-                ret = PTR_ERR(wdev->ick);
-                wdev->ick = NULL;
-                goto err_clk;
-        }
-        wdev->fck = clk_get(&pdev->dev, "fck");
-        if (IS_ERR(wdev->fck)) {
-                ret = PTR_ERR(wdev->fck);
-                wdev->fck = NULL;
-                goto err_clk;
-        }
+        wdev->dev = &pdev->dev;
 
         wdev->base = ioremap(res->start, resource_size(res));
         if (!wdev->base) {
@@ -314,8 +298,8 @@ static int __devinit omap_wdt_probe(struct platform_device *pdev)
 
         platform_set_drvdata(pdev, wdev);
 
-        clk_enable(wdev->ick);
-        clk_enable(wdev->fck);
+        pm_runtime_enable(wdev->dev);
+        pm_runtime_get_sync(wdev->dev);
 
         omap_wdt_disable(wdev);
         omap_wdt_adjust_timeout(timer_margin);
@@ -333,11 +317,7 @@ static int __devinit omap_wdt_probe(struct platform_device *pdev)
                 __raw_readl(wdev->base + OMAP_WATCHDOG_REV) & 0xFF,
                 timer_margin);
 
-        /* autogate OCP interface clock */
-        __raw_writel(0x01, wdev->base + OMAP_WATCHDOG_SYS_CONFIG);
-
-        clk_disable(wdev->ick);
-        clk_disable(wdev->fck);
+        pm_runtime_put_sync(wdev->dev);
 
         omap_wdt_dev = pdev;
 
@@ -349,12 +329,6 @@ err_misc:
 
 err_ioremap:
         wdev->base = NULL;
-
-err_clk:
-        if (wdev->ick)
-                clk_put(wdev->ick);
-        if (wdev->fck)
-                clk_put(wdev->fck);
         kfree(wdev);
 
 err_kzalloc:
@@ -386,8 +360,6 @@ static int __devexit omap_wdt_remove(struct platform_device *pdev)
         release_mem_region(res->start, resource_size(res));
         platform_set_drvdata(pdev, NULL);
 
-        clk_put(wdev->ick);
-        clk_put(wdev->fck);
         iounmap(wdev->base);
 
         kfree(wdev);