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#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))
#define NV_I2C_TYPE_DCBI2C(n) (0x0000 | (n))
#define NV_I2C_TYPE_EXTDDC(e) (0x0005 | (e) << 8)
#define NV_I2C_TYPE_EXTAUX(e) (0x0006 | (e) << 8)
struct nouveau_i2c_port {
struct nouveau_object base;
struct i2c_adapter adapter;
struct list_head head;
u8 index;
const struct nouveau_i2c_func *func;
};
struct nouveau_i2c_func {
void (*acquire)(struct nouveau_i2c_port *);
void (*release)(struct nouveau_i2c_port *);
void (*drive_scl)(struct nouveau_i2c_port *, int);
void (*drive_sda)(struct nouveau_i2c_port *, int);
int (*sense_scl)(struct nouveau_i2c_port *);
int (*sense_sda)(struct nouveau_i2c_port *);
int (*aux)(struct nouveau_i2c_port *, u8, u32, u8 *, u8);
int (*pattern)(struct nouveau_i2c_port *, int pattern);
int (*lnk_ctl)(struct nouveau_i2c_port *, int nr, int bw, bool enh);
int (*drv_ctl)(struct nouveau_i2c_port *, int lane, int sw, int pe);
};
#define nouveau_i2c_port_create(p,e,o,i,a,f,d) \
nouveau_i2c_port_create_((p), (e), (o), (i), (a), (f), \
sizeof(**d), (void **)d)
#define nouveau_i2c_port_destroy(p) ({ \
struct nouveau_i2c_port *port = (p); \
_nouveau_i2c_port_dtor(nv_object(i2c)); \
})
#define nouveau_i2c_port_init(p) \
nouveau_object_init(&(p)->base)
#define nouveau_i2c_port_fini(p,s) \
nouveau_object_fini(&(p)->base, (s))
int nouveau_i2c_port_create_(struct nouveau_object *, struct nouveau_object *,
struct nouveau_oclass *, u8,
const struct i2c_algorithm *,
const struct nouveau_i2c_func *,
int, void **);
void _nouveau_i2c_port_dtor(struct nouveau_object *);
#define _nouveau_i2c_port_init nouveau_object_init
#define _nouveau_i2c_port_fini nouveau_object_fini
struct nouveau_i2c_board_info {
struct i2c_board_info dev;
u8 udelay; /* set to 0 to use the standard delay */
};
struct nouveau_i2c {
struct nouveau_subdev base;
struct nouveau_i2c_port *(*find)(struct nouveau_i2c *, u8 index);
struct nouveau_i2c_port *(*find_type)(struct nouveau_i2c *, u16 type);
int (*identify)(struct nouveau_i2c *, int index,
const char *what, struct nouveau_i2c_board_info *,
bool (*match)(struct nouveau_i2c_port *,
struct i2c_board_info *, void *), void *);
struct list_head ports;
};
static inline struct nouveau_i2c *
nouveau_i2c(void *obj)
{
return (void *)nv_device(obj)->subdev[NVDEV_SUBDEV_I2C];
}
#define nouveau_i2c_create(p,e,o,s,d) \
nouveau_i2c_create_((p), (e), (o), (s), sizeof(**d), (void **)d)
#define nouveau_i2c_destroy(p) ({ \
struct nouveau_i2c *i2c = (p); \
_nouveau_i2c_dtor(nv_object(i2c)); \
})
#define nouveau_i2c_init(p) ({ \
struct nouveau_i2c *i2c = (p); \
_nouveau_i2c_init(nv_object(i2c)); \
})
#define nouveau_i2c_fini(p,s) ({ \
struct nouveau_i2c *i2c = (p); \
_nouveau_i2c_fini(nv_object(i2c), (s)); \
})
int nouveau_i2c_create_(struct nouveau_object *, struct nouveau_object *,
struct nouveau_oclass *, struct nouveau_oclass *,
int, void **);
void _nouveau_i2c_dtor(struct nouveau_object *);
int _nouveau_i2c_init(struct nouveau_object *);
int _nouveau_i2c_fini(struct nouveau_object *, bool);
extern struct nouveau_oclass nv04_i2c_oclass;
extern struct nouveau_oclass nv4e_i2c_oclass;
extern struct nouveau_oclass nv50_i2c_oclass;
extern struct nouveau_oclass nv94_i2c_oclass;
extern struct nouveau_oclass nvd0_i2c_oclass;
extern struct nouveau_oclass nouveau_anx9805_sclass[];
extern const struct i2c_algorithm nouveau_i2c_bit_algo;
extern const struct i2c_algorithm nouveau_i2c_aux_algo;
static inline int
nv_rdi2cr(struct nouveau_i2c_port *port, u8 addr, u8 reg)
{
u8 val;
struct i2c_msg msgs[] = {
{ .addr = addr, .flags = 0, .len = 1, .buf = ® },
{ .addr = addr, .flags = I2C_M_RD, .len = 1, .buf = &val },
};
int ret = i2c_transfer(&port->adapter, msgs, 2);
if (ret != 2)
return -EIO;
return val;
}
static inline int
nv_wri2cr(struct nouveau_i2c_port *port, u8 addr, u8 reg, u8 val)
{
u8 buf[2] = { reg, val };
struct i2c_msg msgs[] = {
{ .addr = addr, .flags = 0, .len = 2, .buf = buf },
};
int ret = i2c_transfer(&port->adapter, msgs, 1);
if (ret != 1)
return -EIO;
return 0;
}
static inline bool
nv_probe_i2c(struct nouveau_i2c_port *port, u8 addr)
{
return nv_rdi2cr(port, addr, 0) >= 0;
}
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);
#endif
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