diff options
| -rw-r--r-- | arch/x86/include/asm/intel_scu_ipc.h | 22 | ||||
| -rw-r--r-- | arch/x86/platform/mrst/mrst.c | 7 |
2 files changed, 29 insertions, 0 deletions
diff --git a/arch/x86/include/asm/intel_scu_ipc.h b/arch/x86/include/asm/intel_scu_ipc.h index 29f66793cc55..4420993acc47 100644 --- a/arch/x86/include/asm/intel_scu_ipc.h +++ b/arch/x86/include/asm/intel_scu_ipc.h @@ -1,6 +1,8 @@ #ifndef _ASM_X86_INTEL_SCU_IPC_H_ #define _ASM_X86_INTEL_SCU_IPC_H_ +#include <linux/notifier.h> + #define IPCMSG_VRTC 0xFA /* Set vRTC device */ /* Command id associated with message IPCMSG_VRTC */ @@ -44,4 +46,24 @@ int intel_scu_ipc_i2c_cntrl(u32 addr, u32 *data); /* Update FW version */ int intel_scu_ipc_fw_update(u8 *buffer, u32 length); +extern struct blocking_notifier_head intel_scu_notifier; + +static inline void intel_scu_notifier_add(struct notifier_block *nb) +{ + blocking_notifier_chain_register(&intel_scu_notifier, nb); +} + +static inline void intel_scu_notifier_remove(struct notifier_block *nb) +{ + blocking_notifier_chain_unregister(&intel_scu_notifier, nb); +} + +static inline int intel_scu_notifier_post(unsigned long v, void *p) +{ + return blocking_notifier_call_chain(&intel_scu_notifier, v, p); +} + +#define SCU_AVAILABLE 1 +#define SCU_DOWN 2 + #endif diff --git a/arch/x86/platform/mrst/mrst.c b/arch/x86/platform/mrst/mrst.c index fe73276e026b..51ec016c20d6 100644 --- a/arch/x86/platform/mrst/mrst.c +++ b/arch/x86/platform/mrst/mrst.c @@ -24,6 +24,7 @@ #include <linux/platform_device.h> #include <linux/irq.h> #include <linux/module.h> +#include <linux/notifier.h> #include <asm/setup.h> #include <asm/mpspec_def.h> @@ -555,6 +556,9 @@ static void __init intel_scu_i2c_device_register(int bus, i2c_devs[i2c_next_dev++] = new_dev; } +BLOCKING_NOTIFIER_HEAD(intel_scu_notifier); +EXPORT_SYMBOL_GPL(intel_scu_notifier); + /* Called by IPC driver */ void intel_scu_devices_create(void) { @@ -579,6 +583,7 @@ void intel_scu_devices_create(void) } else i2c_register_board_info(i2c_bus[i], i2c_devs[i], 1); } + intel_scu_notifier_post(SCU_AVAILABLE, 0L); } EXPORT_SYMBOL_GPL(intel_scu_devices_create); @@ -587,6 +592,8 @@ void intel_scu_devices_destroy(void) { int i; + intel_scu_notifier_post(SCU_DOWN, 0L); + for (i = 0; i < ipc_next_dev; i++) platform_device_del(ipc_devs[i]); } |