mirror of
https://github.com/torvalds/linux
synced 2024-10-26 21:29:56 +00:00
ec9b3a9de6
Previous issues with i2c-algo-bit have now been resolved.
This is a revert of f553b79c03 mostly,
due to fixes in the i2c core repairing the original issue, this code
isn't required and was causing regressions.
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Reported-by: Nick Bowler <nbowler@elliptictech.com>
Tested-by: Nick Bowler <nbowler@elliptictech.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>
60 lines
2 KiB
C
60 lines
2 KiB
C
/*
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* Copyright 2009 Red Hat Inc.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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#ifndef __NOUVEAU_I2C_H__
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#define __NOUVEAU_I2C_H__
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#include <linux/i2c.h>
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#include <linux/i2c-algo-bit.h>
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#include "drm_dp_helper.h"
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#define NV_I2C_PORT(n) (0x00 + (n))
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#define NV_I2C_PORT_NUM 0x10
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#define NV_I2C_DEFAULT(n) (0x80 + (n))
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struct nouveau_i2c_chan {
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struct i2c_adapter adapter;
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struct drm_device *dev;
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struct i2c_algo_bit_data bit;
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struct list_head head;
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u8 index;
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u8 type;
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u32 dcb;
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u32 drive;
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u32 sense;
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u32 state;
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};
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int nouveau_i2c_init(struct drm_device *);
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void nouveau_i2c_fini(struct drm_device *);
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struct nouveau_i2c_chan *nouveau_i2c_find(struct drm_device *, u8 index);
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bool nouveau_probe_i2c_addr(struct nouveau_i2c_chan *i2c, int addr);
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int nouveau_i2c_identify(struct drm_device *dev, const char *what,
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struct i2c_board_info *info,
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bool (*match)(struct nouveau_i2c_chan *,
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struct i2c_board_info *),
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int index);
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extern const struct i2c_algorithm nouveau_dp_i2c_algo;
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#endif /* __NOUVEAU_I2C_H__ */
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