diff options
| author | Rupesh Gujare <rupesh.gujare@atmel.com> | 2013-07-30 12:31:50 (GMT) |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2013-08-01 00:48:21 (GMT) |
| commit | 8fd070077410b26847ef6f5856850df417e7b83e (patch) | |
| tree | 2a164a166018dcc02e06a8d66a465006b88b948b /drivers/staging/ozwpan/ozpd.h | |
| parent | 70bcbc06b7c0c7ecb900a81250862440e80205f7 (diff) | |
| download | linux-fsl-qoriq-8fd070077410b26847ef6f5856850df417e7b83e.tar.xz | |
staging: ozwpan: High resolution timers
Current implementation assumes HZ = 1000 for calculating
all internal timer intervals, which creates problem on
platforms where HZ != 1000.
As well we need resolution of less than 10 mSec for heartbeat
calculation, this creates problem on some platforms where HZ is
configured as HZ = 100, or around, which restricts us to timer interval
of 10 mSec. This is particularly found on embedded devices.
This patch moves on to use high resolution timers to calculate
all timer intervals as it allows us to have very small resolution
of timer interval, removing dependency on HZ.
Signed-off-by: Rupesh Gujare <rupesh.gujare@atmel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/staging/ozwpan/ozpd.h')
| -rw-r--r-- | drivers/staging/ozwpan/ozpd.h | 18 |
1 files changed, 11 insertions, 7 deletions
diff --git a/drivers/staging/ozwpan/ozpd.h b/drivers/staging/ozwpan/ozpd.h index fbf47cb..a281753 100644 --- a/drivers/staging/ozwpan/ozpd.h +++ b/drivers/staging/ozwpan/ozpd.h @@ -6,6 +6,7 @@ #ifndef _OZPD_H_ #define _OZPD_H_ +#include <linux/interrupt.h> #include "ozeltbuf.h" /* PD state @@ -68,18 +69,16 @@ struct oz_pd { u8 isoc_sent; u32 last_rx_pkt_num; u32 last_tx_pkt_num; + struct timespec last_rx_timestamp; u32 trigger_pkt_num; - unsigned long pulse_time_j; - unsigned long timeout_time_j; - unsigned long pulse_period_j; - unsigned long presleep_j; - unsigned long keep_alive_j; - unsigned long last_rx_time_j; + unsigned long pulse_time; + unsigned long pulse_period; + unsigned long presleep; + unsigned long keep_alive; struct oz_elt_buf elt_buff; void *app_ctx[OZ_APPID_MAX]; spinlock_t app_lock[OZ_APPID_MAX]; int max_tx_size; - u8 heartbeat_requested; u8 mode; u8 ms_per_isoc; unsigned isoc_latency; @@ -95,6 +94,11 @@ struct oz_pd { spinlock_t stream_lock; struct list_head stream_list; struct net_device *net_dev; + struct hrtimer heartbeat; + struct hrtimer timeout; + u8 timeout_type; + struct tasklet_struct heartbeat_tasklet; + struct tasklet_struct timeout_tasklet; }; #define OZ_MAX_QUEUED_FRAMES 4 |