diff options
Diffstat (limited to 'drivers/gpu/drm/nouveau/core/include/subdev/i2c.h')
| -rw-r--r-- | drivers/gpu/drm/nouveau/core/include/subdev/i2c.h | 60 |
1 files changed, 60 insertions, 0 deletions
diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h b/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h new file mode 100644 index 0000000..b93ab01 --- /dev/null +++ b/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h @@ -0,0 +1,60 @@ +#ifndef __NOUVEAU_I2C_H__ +#define __NOUVEAU_I2C_H__ + +#include <core/subdev.h> +#include <core/device.h> + +#include <subdev/bios.h> +#include <subdev/bios/i2c.h> + +#define NV_I2C_PORT(n) (0x00 + (n)) +#define NV_I2C_DEFAULT(n) (0x80 + (n)) + +struct nouveau_i2c_port { + struct i2c_adapter adapter; + struct nouveau_i2c *i2c; + struct i2c_algo_bit_data bit; + struct list_head head; + u8 index; + u8 type; + u32 dcb; + u32 drive; + u32 sense; + u32 state; +}; + +struct nouveau_i2c { + struct nouveau_subdev base; + + struct nouveau_i2c_port *(*find)(struct nouveau_i2c *, u8 index); + int (*identify)(struct nouveau_i2c *, int index, + const char *what, struct i2c_board_info *, + bool (*match)(struct nouveau_i2c_port *, + struct i2c_board_info *)); + struct list_head ports; +}; + +static inline struct nouveau_i2c * +nouveau_i2c(void *obj) +{ + return (void *)nv_device(obj)->subdev[NVDEV_SUBDEV_I2C]; +} + +extern struct nouveau_oclass nouveau_i2c_oclass; + +void nouveau_i2c_drive_scl(void *, int); +void nouveau_i2c_drive_sda(void *, int); +int nouveau_i2c_sense_scl(void *); +int nouveau_i2c_sense_sda(void *); + +int nv_rdi2cr(struct nouveau_i2c_port *, u8 addr, u8 reg); +int nv_wri2cr(struct nouveau_i2c_port *, u8 addr, u8 reg, u8 val); +bool nv_probe_i2c(struct nouveau_i2c_port *, u8 addr); + +int nv_rdaux(struct nouveau_i2c_port *, u32 addr, u8 *data, u8 size); +int nv_wraux(struct nouveau_i2c_port *, u32 addr, u8 *data, u8 size); + +extern const struct i2c_algorithm nouveau_i2c_bit_algo; +extern const struct i2c_algorithm nouveau_i2c_aux_algo; + +#endif |