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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_AUX(n) (0x10 + (n))
#define NV_I2C_EXT(n) (0x20 + (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 nvkm_i2c_ntfy_req {
#define NVKM_I2C_PLUG 0x01
#define NVKM_I2C_UNPLUG 0x02
#define NVKM_I2C_IRQ 0x04
#define NVKM_I2C_DONE 0x08
#define NVKM_I2C_ANY 0x0f
u8 mask;
u8 port;
};
struct nvkm_i2c_ntfy_rep {
u8 mask;
};
struct nouveau_i2c_port {
struct nouveau_object base;
struct i2c_adapter adapter;
struct mutex mutex;
struct list_head head;
u8 index;
int aux;
const struct nouveau_i2c_func *func;
};
struct nouveau_i2c_func {
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 *, bool, 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);
};
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 nvkm_event event;
struct nouveau_i2c_port *(*find)(struct nouveau_i2c *, u8 index);
struct nouveau_i2c_port *(*find_type)(struct nouveau_i2c *, u16 type);
int (*acquire_pad)(struct nouveau_i2c_port *, unsigned long timeout);
void (*release_pad)(struct nouveau_i2c_port *);
int (*acquire)(struct nouveau_i2c_port *, unsigned long timeout);
void (*release)(struct nouveau_i2c_port *);
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 *);
wait_queue_head_t wait;
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 *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 *gf117_i2c_oclass;
extern struct nouveau_oclass *nve0_i2c_oclass;
extern struct nouveau_oclass *gm204_i2c_oclass;
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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