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 | 127 |
1 files changed, 109 insertions, 18 deletions
diff --git a/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h b/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h index b93ab01e378..888384c0bed 100644 --- a/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h +++ b/drivers/gpu/drm/nouveau/core/include/subdev/i2c.h @@ -10,23 +10,59 @@ #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 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; + + 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,d) \ + nouveau_i2c_port_create_((p), (e), (o), (i), (a), \ + 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 *, 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 { 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 i2c_board_info *, bool (*match)(struct nouveau_i2c_port *, @@ -40,21 +76,76 @@ nouveau_i2c(void *obj) return (void *)nv_device(obj)->subdev[NVDEV_SUBDEV_I2C]; } -extern struct nouveau_oclass nouveau_i2c_oclass; +#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)); \ +}) -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 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); -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 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 |