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Commit 9a58a333 authored by Sreedhara DS's avatar Sreedhara DS Committed by Matthew Garrett
Browse files

IPC driver for Intel Mobile Internet Device (MID) platforms 



The IPC (inter processor communications) is used to provide the
communications between kernel and system control units on some embedded
Intel x86 platforms.

(Various bits of clean up and restructuring by Alan Cox)

Signed-off-by: default avatarSreedhara DS <sreedhara.ds@intel.com>
Signed-off-by: default avatarAlan Cox <alan@linux.intel.com>
parent d5c051f1

arch/x86/include/asm/intel_scu_ipc.h

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#ifndef _ASM_X86_INTEL_SCU_IPC_H_

#define  _ASM_X86_INTEL_SCU_IPC_H_



/* Read single register */

int intel_scu_ipc_ioread8(u16 addr, u8 *data);



/* Read two sequential registers */

int intel_scu_ipc_ioread16(u16 addr, u16 *data);



/* Read four sequential registers */

int intel_scu_ipc_ioread32(u16 addr, u32 *data);



/* Read a vector */

int intel_scu_ipc_readv(u16 *addr, u8 *data, int len);



/* Write single register */

int intel_scu_ipc_iowrite8(u16 addr, u8 data);



/* Write two sequential registers */

int intel_scu_ipc_iowrite16(u16 addr, u16 data);



/* Write four sequential registers */

int intel_scu_ipc_iowrite32(u16 addr, u32 data);



/* Write a vector */

int intel_scu_ipc_writev(u16 *addr, u8 *data, int len);



/* Update single register based on the mask */

int intel_scu_ipc_update_register(u16 addr, u8 data, u8 mask);



/*

 * Indirect register read

 * Can be used when SCCB(System Controller Configuration Block) register

 * HRIM(Honor Restricted IPC Messages) is set (bit 23)

 */

int intel_scu_ipc_register_read(u32 addr, u32 *data);



/*

 * Indirect register write

 * Can be used when SCCB(System Controller Configuration Block) register

 * HRIM(Honor Restricted IPC Messages) is set (bit 23)

 */

int intel_scu_ipc_register_write(u32 addr, u32 data);



/* Issue commands to the SCU with or without data */

int intel_scu_ipc_simple_command(int cmd, int sub);

int intel_scu_ipc_command(int cmd, int sub, u32 *in, int inlen,

							u32 *out, int outlen);

/* I2C control api */

int intel_scu_ipc_i2c_cntrl(u32 addr, u32 *data);



/* Update FW version */

int intel_scu_ipc_fw_update(u8 *buffer, u32 length);



#endif

drivers/platform/x86/Kconfig

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@@ -527,4 +527,12 @@ config ACPI_CMPC 
	  keys as input device, backlight device, tablet and accelerometer

	  devices.



config INTEL_SCU_IPC

	bool "Intel SCU IPC Support"

	depends on X86_MRST

	default y

	---help---

	  IPC is used to bridge the communications between kernel and SCU on

	  some embedded Intel x86 platforms.



endif # X86_PLATFORM_DEVICES

drivers/platform/x86/Makefile

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@@ -25,3 +25,4 @@ obj-$(CONFIG_ACPI_ASUS) += asus_acpi.o 
obj-$(CONFIG_TOPSTAR_LAPTOP)	+= topstar-laptop.o

obj-$(CONFIG_ACPI_TOSHIBA)	+= toshiba_acpi.o

obj-$(CONFIG_TOSHIBA_BT_RFKILL)	+= toshiba_bluetooth.o

obj-$(CONFIG_INTEL_SCU_IPC)	+= intel_scu_ipc.o

drivers/platform/x86/intel_scu_ipc.c

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File added.

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