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authorFeng Tang <feng.tang@intel.com>2010-11-09 11:22:58 +0000
committerThomas Gleixner <tglx@linutronix.de>2010-11-09 14:45:52 +0100
commit1da4b1c6a4dfb5a13d7147a27c1ac53fed09befd (patch)
tree7b68a2afaa2972217cb0eabc1aa30b8109955f41 /include/linux/sfi.h
parent814ce2521121c2459e16cea8c7221e157edbeddd (diff)
downloadvexpress-lsk-1da4b1c6a4dfb5a13d7147a27c1ac53fed09befd.tar.gz
x86/mrst: Add SFI platform device parsing code
SFI provides a series of tables. These describe the platform devices present including SPI and I²C devices, as well as various sensors, keypads and other glue as well as interfaces provided via the SCU IPC mechanism (intel_scu_ipc.c) This patch is a merge of the core elements and relevant fixes from the Intel development code by Feng, Alek, myself into a single coherent patch for upstream submission. It provides the needed infrastructure to register I2C, SPI and platform devices described by the tables, as well as handlers for some of the hardware already supported in kernel. The 0.8 firmware also provides GPIO tables. Devices are created at boot time or if they are SCU dependant at the point an SCU is discovered. The existing Linux device mechanisms will then handle the device binding. At an abstract level this is an SFI to Linux device translator. Device/platform specific setup/glue is in this file. This is done so that the drivers for the generic I²C and SPI bus devices remain cross platform as they should. (Updated from RFC version to correct the emc1403 name used by the firmware and a wrongly used #define) Signed-off-by: Alek Du <alek.du@linux.intel.com> LKML-Reference: <20101109112158.20013.6158.stgit@localhost.localdomain> [Clean ups, removal of 0.7 support] Signed-off-by: Feng Tang <feng.tang@linux.intel.com> [Clean ups] Signed-off-by: Alan Cox <alan@linux.intel.com> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/sfi.h')
-rw-r--r--include/linux/sfi.h8
1 files changed, 5 insertions, 3 deletions
diff --git a/include/linux/sfi.h b/include/linux/sfi.h
index 7f770c638e9..fe817918b30 100644
--- a/include/linux/sfi.h
+++ b/include/linux/sfi.h
@@ -77,6 +77,8 @@
#define SFI_OEM_ID_SIZE 6
#define SFI_OEM_TABLE_ID_SIZE 8
+#define SFI_NAME_LEN 16
+
#define SFI_SYST_SEARCH_BEGIN 0x000E0000
#define SFI_SYST_SEARCH_END 0x000FFFFF
@@ -156,13 +158,13 @@ struct sfi_device_table_entry {
u16 addr;
u8 irq;
u32 max_freq;
- char name[16];
+ char name[SFI_NAME_LEN];
} __packed;
struct sfi_gpio_table_entry {
- char controller_name[16];
+ char controller_name[SFI_NAME_LEN];
u16 pin_no;
- char pin_name[16];
+ char pin_name[SFI_NAME_LEN];
} __packed;
typedef int (*sfi_table_handler) (struct sfi_table_header *table);