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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 | #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 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;
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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