diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/nouveau_i2c.h')
| -rw-r--r-- | drivers/gpu/drm/nouveau/nouveau_i2c.h | 59 |
1 files changed, 59 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/nouveau_i2c.h b/drivers/gpu/drm/nouveau/nouveau_i2c.h new file mode 100644 index 00000000..1d083893 --- /dev/null +++ b/drivers/gpu/drm/nouveau/nouveau_i2c.h @@ -0,0 +1,59 @@ +/* + * Copyright 2009 Red Hat Inc. + * + * Permission is hereby granted, free of charge, to any person obtaining a + * copy of this software and associated documentation files (the "Software"), + * to deal in the Software without restriction, including without limitation + * the rights to use, copy, modify, merge, publish, distribute, sublicense, + * and/or sell copies of the Software, and to permit persons to whom the + * Software is furnished to do so, subject to the following conditions: + * + * The above copyright notice and this permission notice shall be included in + * all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR + * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, + * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL + * THE COPYRIGHT HOLDER(S) OR AUTHOR(S) BE LIABLE FOR ANY CLAIM, DAMAGES OR + * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, + * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR + * OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef __NOUVEAU_I2C_H__ +#define __NOUVEAU_I2C_H__ + +#include <linux/i2c.h> +#include <linux/i2c-algo-bit.h> +#include "drm_dp_helper.h" + +#define NV_I2C_PORT(n) (0x00 + (n)) +#define NV_I2C_PORT_NUM 0x10 +#define NV_I2C_DEFAULT(n) (0x80 + (n)) + +struct nouveau_i2c_chan { + struct i2c_adapter adapter; + struct drm_device *dev; + struct i2c_algo_bit_data bit; + struct list_head head; + u8 index; + u8 type; + u32 dcb; + u32 drive; + u32 sense; + u32 state; +}; + +int nouveau_i2c_init(struct drm_device *); +void nouveau_i2c_fini(struct drm_device *); +struct nouveau_i2c_chan *nouveau_i2c_find(struct drm_device *, u8 index); +bool nouveau_probe_i2c_addr(struct nouveau_i2c_chan *i2c, int addr); +int nouveau_i2c_identify(struct drm_device *dev, const char *what, + struct i2c_board_info *info, + bool (*match)(struct nouveau_i2c_chan *, + struct i2c_board_info *), + int index); + +extern const struct i2c_algorithm nouveau_dp_i2c_algo; + +#endif /* __NOUVEAU_I2C_H__ */ |