From 392a325c4351339cfbf182bb5a1444df1cf65dbb Mon Sep 17 00:00:00 2001 From: Andres Salomon Date: Tue, 10 Jul 2012 19:31:51 -0700 Subject: [PATCH] Platform: OLPC: add a stub to drivers/platform/ for the OLPC EC driver The OLPC EC driver has outgrown arch/x86/platform/. It's time to both share common code amongst different architectures, as well as move it out of arch/x86/. The XO-1.75 is ARM-based, and the EC driver shares a lot of code with the x86 code. Signed-off-by: Andres Salomon Acked-by: Paul Fox Reviewed-by: Thomas Gleixner --- arch/x86/include/asm/olpc.h | 19 +++---------------- arch/x86/platform/olpc/olpc.c | 4 ++-- drivers/platform/Makefile | 1 + drivers/platform/olpc/Makefile | 4 ++++ drivers/platform/olpc/olpc-ec.c | 16 ++++++++++++++++ include/linux/olpc-ec.h | 29 +++++++++++++++++++++++++++++ 6 files changed, 55 insertions(+), 18 deletions(-) create mode 100644 drivers/platform/olpc/Makefile create mode 100644 drivers/platform/olpc/olpc-ec.c create mode 100644 include/linux/olpc-ec.h diff --git a/arch/x86/include/asm/olpc.h b/arch/x86/include/asm/olpc.h index 87bdbca72f94..513e9992771d 100644 --- a/arch/x86/include/asm/olpc.h +++ b/arch/x86/include/asm/olpc.h @@ -4,6 +4,7 @@ #define _ASM_X86_OLPC_H #include +#include struct olpc_platform_t { int flags; @@ -102,22 +103,8 @@ extern int pci_olpc_init(void); /* EC related functions */ -extern int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen, - unsigned char *outbuf, size_t outlen); - -/* EC commands */ - -#define EC_FIRMWARE_REV 0x08 -#define EC_WRITE_SCI_MASK 0x1b -#define EC_WAKE_UP_WLAN 0x24 -#define EC_WLAN_LEAVE_RESET 0x25 -#define EC_READ_EB_MODE 0x2a -#define EC_SET_SCI_INHIBIT 0x32 -#define EC_SET_SCI_INHIBIT_RELEASE 0x34 -#define EC_WLAN_ENTER_RESET 0x35 -#define EC_WRITE_EXT_SCI_MASK 0x38 -#define EC_SCI_QUERY 0x84 -#define EC_EXT_SCI_QUERY 0x85 +extern int olpc_ec_cmd_x86(unsigned char cmd, unsigned char *inbuf, + size_t inlen, unsigned char *outbuf, size_t outlen); /* SCI source values */ diff --git a/arch/x86/platform/olpc/olpc.c b/arch/x86/platform/olpc/olpc.c index a4bee53c2e54..796e199ac77a 100644 --- a/arch/x86/platform/olpc/olpc.c +++ b/arch/x86/platform/olpc/olpc.c @@ -125,7 +125,7 @@ static int __wait_on_obf(unsigned int line, unsigned int port, int desired) * . Unfortunately, while * OpenFirmware's source is available, the EC's is not. */ -int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen, +int olpc_ec_cmd_x86(unsigned char cmd, unsigned char *inbuf, size_t inlen, unsigned char *outbuf, size_t outlen) { unsigned long flags; @@ -201,7 +201,7 @@ int olpc_ec_cmd(unsigned char cmd, unsigned char *inbuf, size_t inlen, spin_unlock_irqrestore(&ec_lock, flags); return ret; } -EXPORT_SYMBOL_GPL(olpc_ec_cmd); +EXPORT_SYMBOL_GPL(olpc_ec_cmd_x86); void olpc_ec_wakeup_set(u16 value) { diff --git a/drivers/platform/Makefile b/drivers/platform/Makefile index 782953ae4c03..b17c16ce54ad 100644 --- a/drivers/platform/Makefile +++ b/drivers/platform/Makefile @@ -3,3 +3,4 @@ # obj-$(CONFIG_X86) += x86/ +obj-$(CONFIG_OLPC) += olpc/ diff --git a/drivers/platform/olpc/Makefile b/drivers/platform/olpc/Makefile new file mode 100644 index 000000000000..dc8b26bc7209 --- /dev/null +++ b/drivers/platform/olpc/Makefile @@ -0,0 +1,4 @@ +# +# OLPC XO platform-specific drivers +# +obj-$(CONFIG_OLPC) += olpc-ec.o diff --git a/drivers/platform/olpc/olpc-ec.c b/drivers/platform/olpc/olpc-ec.c new file mode 100644 index 000000000000..42026036cd3e --- /dev/null +++ b/drivers/platform/olpc/olpc-ec.c @@ -0,0 +1,16 @@ +/* + * Generic driver for the OLPC Embedded Controller. + * + * Copyright (C) 2011-2012 One Laptop per Child Foundation. + * + * Licensed under the GPL v2 or later. + */ +#include +#include + +int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, size_t outlen) +{ + /* Currently a stub; this will be expanded upon later. */ + return olpc_ec_cmd_x86(cmd, inbuf, inlen, outbuf, outlen); +} +EXPORT_SYMBOL_GPL(olpc_ec_cmd); diff --git a/include/linux/olpc-ec.h b/include/linux/olpc-ec.h new file mode 100644 index 000000000000..6d4e426d9fdc --- /dev/null +++ b/include/linux/olpc-ec.h @@ -0,0 +1,29 @@ +#ifndef _LINUX_OLPC_EC_H +#define _LINUX_OLPC_EC_H + +/* XO-1 EC commands */ +#define EC_FIRMWARE_REV 0x08 +#define EC_WRITE_SCI_MASK 0x1b +#define EC_WAKE_UP_WLAN 0x24 +#define EC_WLAN_LEAVE_RESET 0x25 +#define EC_READ_EB_MODE 0x2a +#define EC_SET_SCI_INHIBIT 0x32 +#define EC_SET_SCI_INHIBIT_RELEASE 0x34 +#define EC_WLAN_ENTER_RESET 0x35 +#define EC_WRITE_EXT_SCI_MASK 0x38 +#define EC_SCI_QUERY 0x84 +#define EC_EXT_SCI_QUERY 0x85 + +#ifdef CONFIG_OLPC + +extern int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, + size_t outlen); + +#else + +static inline int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf, + size_t outlen) { return -ENODEV; } + +#endif /* CONFIG_OLPC */ + +#endif /* _LINUX_OLPC_EC_H */