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f98020c22a
Commit a28d3af2a2 ("[PATCH] 2/5 powerpc: Rework PowerMac i2c part 2")
removed the last calls to the pmac_low_i2c_{lock,unlock}() functions.
Hence, remove these two functions.
Reviewed-by: Christophe Leroy (CS GROUP) <chleroy@kernel.org>
Signed-off-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Madhavan Srinivasan <maddy@linux.ibm.com>
Link: https://patch.msgid.link/20260316174747.3871924-1-bvanassche@acm.org
95 lines
2.9 KiB
C
95 lines
2.9 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* include/asm-ppc/pmac_low_i2c.h
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*
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* Copyright (C) 2003 Ben. Herrenschmidt (benh@kernel.crashing.org)
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*/
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#ifndef __PMAC_LOW_I2C_H__
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#define __PMAC_LOW_I2C_H__
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#ifdef __KERNEL__
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/* i2c mode (based on the platform functions format) */
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enum {
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pmac_i2c_mode_dumb = 1,
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pmac_i2c_mode_std = 2,
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pmac_i2c_mode_stdsub = 3,
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pmac_i2c_mode_combined = 4,
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};
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/* RW bit in address */
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enum {
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pmac_i2c_read = 0x01,
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pmac_i2c_write = 0x00
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};
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/* i2c bus type */
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enum {
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pmac_i2c_bus_keywest = 0,
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pmac_i2c_bus_pmu = 1,
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pmac_i2c_bus_smu = 2,
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};
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/* i2c bus features */
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enum {
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/* can_largesub : supports >1 byte subaddresses (SMU only) */
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pmac_i2c_can_largesub = 0x00000001u,
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/* multibus : device node holds multiple busses, bus number is
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* encoded in bits 0xff00 of "reg" of a given device
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*/
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pmac_i2c_multibus = 0x00000002u,
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};
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/* i2c busses in the system */
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struct pmac_i2c_bus;
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struct i2c_adapter;
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/* Init, called early during boot */
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extern int pmac_i2c_init(void);
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/* Lookup an i2c bus for a device-node. The node can be either the bus
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* node itself or a device below it. In the case of a multibus, the bus
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* node itself is the controller node, else, it's a child of the controller
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* node
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*/
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extern struct pmac_i2c_bus *pmac_i2c_find_bus(struct device_node *node);
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/* Get the address for an i2c device. This strips the bus number if
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* necessary. The 7 bits address is returned 1 bit right shifted so that the
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* direction can be directly ored in
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*/
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extern u8 pmac_i2c_get_dev_addr(struct device_node *device);
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/* Get infos about a bus */
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extern struct device_node *pmac_i2c_get_controller(struct pmac_i2c_bus *bus);
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extern struct device_node *pmac_i2c_get_bus_node(struct pmac_i2c_bus *bus);
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extern int pmac_i2c_get_type(struct pmac_i2c_bus *bus);
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extern int pmac_i2c_get_flags(struct pmac_i2c_bus *bus);
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extern int pmac_i2c_get_channel(struct pmac_i2c_bus *bus);
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/* i2c layer adapter helpers */
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extern struct i2c_adapter *pmac_i2c_get_adapter(struct pmac_i2c_bus *bus);
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extern struct pmac_i2c_bus *pmac_i2c_adapter_to_bus(struct i2c_adapter *adapter);
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/* March a device or bus with an i2c adapter structure, to be used by drivers
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* to match device-tree nodes with i2c adapters during adapter discovery
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* callbacks
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*/
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extern int pmac_i2c_match_adapter(struct device_node *dev,
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struct i2c_adapter *adapter);
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/* Access functions for platform code */
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extern int pmac_i2c_open(struct pmac_i2c_bus *bus, int polled);
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extern void pmac_i2c_close(struct pmac_i2c_bus *bus);
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extern int pmac_i2c_setmode(struct pmac_i2c_bus *bus, int mode);
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extern int pmac_i2c_xfer(struct pmac_i2c_bus *bus, u8 addrdir, int subsize,
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u32 subaddr, u8 *data, int len);
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/* Suspend/resume code called by via-pmu directly for now */
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extern void pmac_pfunc_i2c_suspend(void);
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extern void pmac_pfunc_i2c_resume(void);
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#endif /* __KERNEL__ */
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#endif /* __PMAC_LOW_I2C_H__ */
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