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author | Ben Skeggs <bskeggs@redhat.com> | 2015-08-20 07:54:15 +0300 |
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committer | Ben Skeggs <bskeggs@redhat.com> | 2015-08-28 05:40:29 +0300 |
commit | 2aa5eac5163fedf09f2d61992cb5ea4d75bec9db (patch) | |
tree | 64bd7231349c928341892f4141d85e3397400d0a /drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h | |
parent | d36a99d2da22bdffebf644e4a5f811e8eff82360 (diff) | |
download | linux-2aa5eac5163fedf09f2d61992cb5ea4d75bec9db.tar.xz |
drm/nouveau/i2c: transition pad/ports away from being based on nvkm_object
Signed-off-by: Ben Skeggs <bskeggs@redhat.com>
Diffstat (limited to 'drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h')
-rw-r--r-- | drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h | 125 |
1 files changed, 73 insertions, 52 deletions
diff --git a/drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h b/drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h index 6b71cb6d5952..ddc7e6e4be60 100644 --- a/drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h +++ b/drivers/gpu/drm/nouveau/include/nvkm/subdev/i2c.h @@ -6,15 +6,6 @@ #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 @@ -29,55 +20,66 @@ struct nvkm_i2c_ntfy_rep { u8 mask; }; -struct nvkm_i2c_port { - struct nvkm_object base; - struct i2c_adapter adapter; - struct mutex mutex; +struct nvkm_i2c_bus_probe { + struct i2c_board_info dev; + u8 udelay; /* set to 0 to use the standard delay */ +}; - struct list_head head; - u8 index; - int aux; +struct nvkm_i2c_bus { + const struct nvkm_i2c_bus_func *func; + struct nvkm_i2c_pad *pad; +#define NVKM_I2C_BUS_CCB(n) /* 'n' is ccb index */ (n) +#define NVKM_I2C_BUS_EXT(n) /* 'n' is dcb external encoder type */ ((n) + 0x100) +#define NVKM_I2C_BUS_PRI /* ccb primary comm. port */ -1 +#define NVKM_I2C_BUS_SEC /* ccb secondary comm. port */ -2 + int id; - const struct nvkm_i2c_func *func; + struct mutex mutex; + struct list_head head; + struct i2c_adapter i2c; }; -struct nvkm_i2c_func { - void (*drive_scl)(struct nvkm_i2c_port *, int); - void (*drive_sda)(struct nvkm_i2c_port *, int); - int (*sense_scl)(struct nvkm_i2c_port *); - int (*sense_sda)(struct nvkm_i2c_port *); +int nvkm_i2c_bus_acquire(struct nvkm_i2c_bus *); +void nvkm_i2c_bus_release(struct nvkm_i2c_bus *); +int nvkm_i2c_bus_probe(struct nvkm_i2c_bus *, const char *, + struct nvkm_i2c_bus_probe *, + bool (*)(struct nvkm_i2c_bus *, + struct i2c_board_info *, void *), void *); - int (*aux)(struct nvkm_i2c_port *, bool, u8, u32, u8 *, u8); - int (*pattern)(struct nvkm_i2c_port *, int pattern); - int (*lnk_ctl)(struct nvkm_i2c_port *, int nr, int bw, bool enh); - int (*drv_ctl)(struct nvkm_i2c_port *, int lane, int sw, int pe); -}; +struct nvkm_i2c_aux { + const struct nvkm_i2c_aux_func *func; + struct nvkm_i2c_pad *pad; +#define NVKM_I2C_AUX_CCB(n) /* 'n' is ccb index */ (n) +#define NVKM_I2C_AUX_EXT(n) /* 'n' is dcb external encoder type */ ((n) + 0x100) + int id; -struct nvkm_i2c_board_info { - struct i2c_board_info dev; - u8 udelay; /* set to 0 to use the standard delay */ + struct mutex mutex; + struct list_head head; + struct i2c_adapter i2c; + + u32 intr; }; +void nvkm_i2c_aux_monitor(struct nvkm_i2c_aux *, bool monitor); +int nvkm_i2c_aux_acquire(struct nvkm_i2c_aux *); +void nvkm_i2c_aux_release(struct nvkm_i2c_aux *); +int nvkm_i2c_aux_xfer(struct nvkm_i2c_aux *, bool retry, u8 type, + u32 addr, u8 *data, u8 size); +int nvkm_i2c_aux_lnk_ctl(struct nvkm_i2c_aux *, int link_nr, int link_bw, + bool enhanced_framing); + struct nvkm_i2c { struct nvkm_subdev subdev; struct nvkm_event event; - struct nvkm_i2c_port *(*find)(struct nvkm_i2c *, u8 index); - struct nvkm_i2c_port *(*find_type)(struct nvkm_i2c *, u16 type); - int (*acquire_pad)(struct nvkm_i2c_port *, unsigned long timeout); - void (*release_pad)(struct nvkm_i2c_port *); - int (*acquire)(struct nvkm_i2c_port *, unsigned long timeout); - void (*release)(struct nvkm_i2c_port *); - int (*identify)(struct nvkm_i2c *, int index, - const char *what, struct nvkm_i2c_board_info *, - bool (*match)(struct nvkm_i2c_port *, - struct i2c_board_info *, void *), - void *); - - wait_queue_head_t wait; - struct list_head ports; + struct list_head pad; + struct list_head bus; + struct list_head aux; }; +struct nvkm_i2c_bus *nvkm_i2c_bus_find(struct nvkm_i2c *, int); +struct nvkm_i2c_aux *nvkm_i2c_aux_find(struct nvkm_i2c *, int); + static inline struct nvkm_i2c * nvkm_i2c(void *obj) { @@ -94,7 +96,7 @@ extern struct nvkm_oclass *gk104_i2c_oclass; extern struct nvkm_oclass *gm204_i2c_oclass; static inline int -nv_rdi2cr(struct nvkm_i2c_port *port, u8 addr, u8 reg) +nvkm_rdi2cr(struct i2c_adapter *adap, u8 addr, u8 reg) { u8 val; struct i2c_msg msgs[] = { @@ -102,7 +104,7 @@ nv_rdi2cr(struct nvkm_i2c_port *port, u8 addr, u8 reg) { .addr = addr, .flags = I2C_M_RD, .len = 1, .buf = &val }, }; - int ret = i2c_transfer(&port->adapter, msgs, 2); + int ret = i2c_transfer(adap, msgs, ARRAY_SIZE(msgs)); if (ret != 2) return -EIO; @@ -110,14 +112,14 @@ nv_rdi2cr(struct nvkm_i2c_port *port, u8 addr, u8 reg) } static inline int -nv_wri2cr(struct nvkm_i2c_port *port, u8 addr, u8 reg, u8 val) +nvkm_wri2cr(struct i2c_adapter *adap, 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); + int ret = i2c_transfer(adap, msgs, ARRAY_SIZE(msgs)); if (ret != 1) return -EIO; @@ -125,11 +127,30 @@ nv_wri2cr(struct nvkm_i2c_port *port, u8 addr, u8 reg, u8 val) } static inline bool -nv_probe_i2c(struct nvkm_i2c_port *port, u8 addr) +nvkm_probe_i2c(struct i2c_adapter *adap, u8 addr) +{ + return nvkm_rdi2cr(adap, addr, 0) >= 0; +} + +static inline int +nvkm_rdaux(struct nvkm_i2c_aux *aux, u32 addr, u8 *data, u8 size) { - return nv_rdi2cr(port, addr, 0) >= 0; + int ret = nvkm_i2c_aux_acquire(aux); + if (ret == 0) { + ret = nvkm_i2c_aux_xfer(aux, true, 9, addr, data, size); + nvkm_i2c_aux_release(aux); + } + return ret; } -int nv_rdaux(struct nvkm_i2c_port *, u32 addr, u8 *data, u8 size); -int nv_wraux(struct nvkm_i2c_port *, u32 addr, u8 *data, u8 size); +static inline int +nvkm_wraux(struct nvkm_i2c_aux *aux, u32 addr, u8 *data, u8 size) +{ + int ret = nvkm_i2c_aux_acquire(aux); + if (ret == 0) { + ret = nvkm_i2c_aux_xfer(aux, true, 8, addr, data, size); + nvkm_i2c_aux_release(aux); + } + return ret; +} #endif |