diff options
Diffstat (limited to 'drivers/gpu/host1x/syncpt.h')
| -rw-r--r-- | drivers/gpu/host1x/syncpt.h | 46 |
1 files changed, 39 insertions, 7 deletions
diff --git a/drivers/gpu/host1x/syncpt.h b/drivers/gpu/host1x/syncpt.h index 9056465..267c0b9 100644 --- a/drivers/gpu/host1x/syncpt.h +++ b/drivers/gpu/host1x/syncpt.h @@ -20,7 +20,6 @@ #define __HOST1X_SYNCPT_H #include <linux/atomic.h> -#include <linux/host1x.h> #include <linux/kernel.h> #include <linux/sched.h> @@ -31,11 +30,6 @@ struct host1x; /* Reserved for replacing an expired wait with a NOP */ #define HOST1X_SYNCPT_RESERVED 0 -struct host1x_syncpt_base { - unsigned int id; - bool requested; -}; - struct host1x_syncpt { int id; atomic_t min_val; @@ -45,7 +39,6 @@ struct host1x_syncpt { bool client_managed; struct host1x *host; struct device *dev; - struct host1x_syncpt_base *base; /* interrupt data */ struct host1x_syncpt_intr intr; @@ -57,6 +50,25 @@ int host1x_syncpt_init(struct host1x *host); /* Free sync point array */ void host1x_syncpt_deinit(struct host1x *host); +/* + * Read max. It indicates how many operations there are in queue, either in + * channel or in a software thread. + * */ +static inline u32 host1x_syncpt_read_max(struct host1x_syncpt *sp) +{ + smp_rmb(); + return (u32)atomic_read(&sp->max_val); +} + +/* + * Read min, which is a shadow of the current sync point value in hardware. + */ +static inline u32 host1x_syncpt_read_min(struct host1x_syncpt *sp) +{ + smp_rmb(); + return (u32)atomic_read(&sp->min_val); +} + /* Return number of sync point supported. */ int host1x_syncpt_nb_pts(struct host1x *host); @@ -100,6 +112,9 @@ static inline bool host1x_syncpt_idle(struct host1x_syncpt *sp) return (min == max); } +/* Return pointer to struct denoting sync point id. */ +struct host1x_syncpt *host1x_syncpt_get(struct host1x *host, u32 id); + /* Load current value from hardware to the shadow register. */ u32 host1x_syncpt_load(struct host1x_syncpt *sp); @@ -115,9 +130,16 @@ void host1x_syncpt_restore(struct host1x *host); /* Read current wait base value into shadow register and return it. */ u32 host1x_syncpt_load_wait_base(struct host1x_syncpt *sp); +/* Request incrementing a sync point. */ +int host1x_syncpt_incr(struct host1x_syncpt *sp); + /* Indicate future operations by incrementing the sync point max. */ u32 host1x_syncpt_incr_max(struct host1x_syncpt *sp, u32 incrs); +/* Wait until sync point reaches a threshold value, or a timeout. */ +int host1x_syncpt_wait(struct host1x_syncpt *sp, u32 thresh, + long timeout, u32 *value); + /* Check if sync point id is valid. */ static inline int host1x_syncpt_is_valid(struct host1x_syncpt *sp) { @@ -127,4 +149,14 @@ static inline int host1x_syncpt_is_valid(struct host1x_syncpt *sp) /* Patch a wait by replacing it with a wait for syncpt 0 value 0 */ int host1x_syncpt_patch_wait(struct host1x_syncpt *sp, void *patch_addr); +/* Return id of the sync point */ +u32 host1x_syncpt_id(struct host1x_syncpt *sp); + +/* Allocate a sync point for a device. */ +struct host1x_syncpt *host1x_syncpt_request(struct device *dev, + bool client_managed); + +/* Free a sync point. */ +void host1x_syncpt_free(struct host1x_syncpt *sp); + #endif |