mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-25 05:34:00 +08:00
98d4f93c79
This patch replace some magic numbers. I believe it makes the driver more readable. The magic number 0x26 is the XO system embedded controller (EC) command 'DCON power enable/disable'. Number 0x41, and 0x42 are special memory controller settings register. The 0x41 initialize bit sequence 0x101 means: enable memory power down function and special SDRAM clock delay for synchronize SDRAM output and clock signal. The 0x42 initialize squence 0x101 is wrong. According to the specification Bit 8 is reserved, thus not in use. I removed it. Signed-off-by: Jens Frederich <jfrederich@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
43 lines
1.0 KiB
C
43 lines
1.0 KiB
C
#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_DCON_POWER_MODE 0x26
|
|
#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
|
|
|
|
struct platform_device;
|
|
|
|
struct olpc_ec_driver {
|
|
int (*probe)(struct platform_device *);
|
|
int (*suspend)(struct platform_device *);
|
|
int (*resume)(struct platform_device *);
|
|
|
|
int (*ec_cmd)(u8, u8 *, size_t, u8 *, size_t, void *);
|
|
};
|
|
|
|
#ifdef CONFIG_OLPC
|
|
|
|
extern void olpc_ec_driver_register(struct olpc_ec_driver *drv, void *arg);
|
|
|
|
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 */
|