3 #include <core/subdev.h>
4 #include <core/event.h>
6 #include <subdev/bios.h>
7 #include <subdev/bios/i2c.h>
9 #define NV_I2C_PORT(n) (0x00 + (n))
10 #define NV_I2C_AUX(n) (0x10 + (n))
11 #define NV_I2C_EXT(n) (0x20 + (n))
12 #define NV_I2C_DEFAULT(n) (0x80 + (n))
14 #define NV_I2C_TYPE_DCBI2C(n) (0x0000 | (n))
15 #define NV_I2C_TYPE_EXTDDC(e) (0x0005 | (e) << 8)
16 #define NV_I2C_TYPE_EXTAUX(e) (0x0006 | (e) << 8)
18 struct nvkm_i2c_ntfy_req {
19 #define NVKM_I2C_PLUG 0x01
20 #define NVKM_I2C_UNPLUG 0x02
21 #define NVKM_I2C_IRQ 0x04
22 #define NVKM_I2C_DONE 0x08
23 #define NVKM_I2C_ANY 0x0f
28 struct nvkm_i2c_ntfy_rep {
32 struct nvkm_i2c_port {
33 struct nvkm_object base;
34 struct i2c_adapter adapter;
37 struct list_head head;
41 const struct nvkm_i2c_func *func;
44 struct nvkm_i2c_func {
45 void (*drive_scl)(struct nvkm_i2c_port *, int);
46 void (*drive_sda)(struct nvkm_i2c_port *, int);
47 int (*sense_scl)(struct nvkm_i2c_port *);
48 int (*sense_sda)(struct nvkm_i2c_port *);
50 int (*aux)(struct nvkm_i2c_port *, bool, u8, u32, u8 *, u8);
51 int (*pattern)(struct nvkm_i2c_port *, int pattern);
52 int (*lnk_ctl)(struct nvkm_i2c_port *, int nr, int bw, bool enh);
53 int (*drv_ctl)(struct nvkm_i2c_port *, int lane, int sw, int pe);
56 struct nvkm_i2c_board_info {
57 struct i2c_board_info dev;
58 u8 udelay; /* set to 0 to use the standard delay */
62 struct nvkm_subdev base;
63 struct nvkm_event event;
65 struct nvkm_i2c_port *(*find)(struct nvkm_i2c *, u8 index);
66 struct nvkm_i2c_port *(*find_type)(struct nvkm_i2c *, u16 type);
67 int (*acquire_pad)(struct nvkm_i2c_port *, unsigned long timeout);
68 void (*release_pad)(struct nvkm_i2c_port *);
69 int (*acquire)(struct nvkm_i2c_port *, unsigned long timeout);
70 void (*release)(struct nvkm_i2c_port *);
71 int (*identify)(struct nvkm_i2c *, int index,
72 const char *what, struct nvkm_i2c_board_info *,
73 bool (*match)(struct nvkm_i2c_port *,
74 struct i2c_board_info *, void *),
77 wait_queue_head_t wait;
78 struct list_head ports;
81 static inline struct nvkm_i2c *
84 return (void *)nvkm_subdev(obj, NVDEV_SUBDEV_I2C);
87 extern struct nvkm_oclass *nv04_i2c_oclass;
88 extern struct nvkm_oclass *nv4e_i2c_oclass;
89 extern struct nvkm_oclass *nv50_i2c_oclass;
90 extern struct nvkm_oclass *g94_i2c_oclass;
91 extern struct nvkm_oclass *gf110_i2c_oclass;
92 extern struct nvkm_oclass *gf117_i2c_oclass;
93 extern struct nvkm_oclass *gk104_i2c_oclass;
94 extern struct nvkm_oclass *gm204_i2c_oclass;
97 nv_rdi2cr(struct nvkm_i2c_port *port, u8 addr, u8 reg)
100 struct i2c_msg msgs[] = {
101 { .addr = addr, .flags = 0, .len = 1, .buf = ® },
102 { .addr = addr, .flags = I2C_M_RD, .len = 1, .buf = &val },
105 int ret = i2c_transfer(&port->adapter, msgs, 2);
113 nv_wri2cr(struct nvkm_i2c_port *port, u8 addr, u8 reg, u8 val)
115 u8 buf[2] = { reg, val };
116 struct i2c_msg msgs[] = {
117 { .addr = addr, .flags = 0, .len = 2, .buf = buf },
120 int ret = i2c_transfer(&port->adapter, msgs, 1);
128 nv_probe_i2c(struct nvkm_i2c_port *port, u8 addr)
130 return nv_rdi2cr(port, addr, 0) >= 0;
133 int nv_rdaux(struct nvkm_i2c_port *, u32 addr, u8 *data, u8 size);
134 int nv_wraux(struct nvkm_i2c_port *, u32 addr, u8 *data, u8 size);