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https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
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0c3d931b3a
It's based off the driver from the OLPC kernel sources. Somewhat modernized and cleaned up, for better or worse. Modified to plug into the olpc-ec driver infrastructure (so that battery interface and debugfs could be reused) and the SPI slave framework. Signed-off-by: Lubomir Rintel <lkundrak@v3.sk> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
74 lines
2 KiB
C
74 lines
2 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _LINUX_OLPC_EC_H
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#define _LINUX_OLPC_EC_H
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#include <linux/bits.h>
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/* XO-1 EC commands */
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#define EC_FIRMWARE_REV 0x08
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#define EC_WRITE_SCI_MASK 0x1b
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#define EC_WAKE_UP_WLAN 0x24
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#define EC_WLAN_LEAVE_RESET 0x25
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#define EC_DCON_POWER_MODE 0x26
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#define EC_READ_EB_MODE 0x2a
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#define EC_SET_SCI_INHIBIT 0x32
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#define EC_SET_SCI_INHIBIT_RELEASE 0x34
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#define EC_WLAN_ENTER_RESET 0x35
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#define EC_WRITE_EXT_SCI_MASK 0x38
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#define EC_SCI_QUERY 0x84
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#define EC_EXT_SCI_QUERY 0x85
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/* SCI source values */
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#define EC_SCI_SRC_GAME BIT(0)
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#define EC_SCI_SRC_BATTERY BIT(1)
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#define EC_SCI_SRC_BATSOC BIT(2)
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#define EC_SCI_SRC_BATERR BIT(3)
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#define EC_SCI_SRC_EBOOK BIT(4) /* XO-1 only */
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#define EC_SCI_SRC_WLAN BIT(5) /* XO-1 only */
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#define EC_SCI_SRC_ACPWR BIT(6)
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#define EC_SCI_SRC_BATCRIT BIT(7)
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#define EC_SCI_SRC_GPWAKE BIT(8) /* XO-1.5 only */
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#define EC_SCI_SRC_ALL GENMASK(8, 0)
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struct platform_device;
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struct olpc_ec_driver {
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int (*suspend)(struct platform_device *);
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int (*resume)(struct platform_device *);
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int (*ec_cmd)(u8, u8 *, size_t, u8 *, size_t, void *);
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bool wakeup_available;
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};
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#ifdef CONFIG_OLPC_EC
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extern void olpc_ec_driver_register(struct olpc_ec_driver *drv, void *arg);
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extern int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,
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size_t outlen);
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extern void olpc_ec_wakeup_set(u16 value);
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extern void olpc_ec_wakeup_clear(u16 value);
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extern int olpc_ec_mask_write(u16 bits);
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extern int olpc_ec_sci_query(u16 *sci_value);
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extern bool olpc_ec_wakeup_available(void);
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#else
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static inline int olpc_ec_cmd(u8 cmd, u8 *inbuf, size_t inlen, u8 *outbuf,
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size_t outlen) { return -ENODEV; }
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static inline void olpc_ec_wakeup_set(u16 value) { }
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static inline void olpc_ec_wakeup_clear(u16 value) { }
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static inline bool olpc_ec_wakeup_available(void)
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{
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return false;
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}
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#endif /* CONFIG_OLPC_EC */
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#endif /* _LINUX_OLPC_EC_H */
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