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[Kernel] Add device ops feature.

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This commit is contained in:
Bernard Xiong
2018-06-10 17:59:17 +08:00
parent bca65f30a9
commit 884fb70fe9
37 changed files with 795 additions and 200 deletions
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components/drivers/hwtimer/hwtimer.c
+20 -4
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@@ -35,13 +35,13 @@ rt_inline rt_uint32_t timeout_calc(rt_hwtimer_t *timer, rt_hwtimerval_t *tv)
float devi_min = 1;
float devi;
/* 把定时器溢出时间和定时时间换算成秒 */
/* changed to second */
overflow = timer->info->maxcnt/(float)timer->freq;
tv_sec = tv->sec + tv->usec/(float)1000000;
if (tv_sec < (1/(float)timer->freq))
{
/* 定时时间小于计数周期 */
/* little timeout */
i = 0;
timeout = 1/(float)timer->freq;
}
@@ -55,7 +55,7 @@ rt_inline rt_uint32_t timeout_calc(rt_hwtimer_t *timer, rt_hwtimerval_t *tv)
{
counter = timeout*timer->freq;
devi = tv_sec - (counter/(float)timer->freq)*i;
/* 计算最小误差 */
/* Minimum calculation error */
if (devi > devi_min)
{
i = index;
@@ -89,7 +89,7 @@ static rt_err_t rt_hwtimer_init(struct rt_device *dev)
rt_hwtimer_t *timer;
timer = (rt_hwtimer_t *)dev;
/* 尝试将默认计数频率设为1Mhz */
/* try to change to 1MHz */
if ((1000000 <= timer->info->maxfreq) && (1000000 >= timer->info->minfreq))
{
timer->freq = 1000000;
@@ -330,6 +330,18 @@ void rt_device_hwtimer_isr(rt_hwtimer_t *timer)
}
}
#ifdef RT_USING_DEVICE_OPS
const static struct rt_device_ops hwtimer_ops =
{
rt_hwtimer_init,
rt_hwtimer_open,
rt_hwtimer_close,
rt_hwtimer_read,
rt_hwtimer_write,
rt_hwtimer_control
};
#endif
rt_err_t rt_device_hwtimer_register(rt_hwtimer_t *timer, const char *name, void *user_data)
{
struct rt_device *device;
@@ -344,12 +356,16 @@ rt_err_t rt_device_hwtimer_register(rt_hwtimer_t *timer, const char *name, void
device->rx_indicate = RT_NULL;
device->tx_complete = RT_NULL;
#ifdef RT_USING_DEVICE_OPS
device->ops = &hwtimer_ops;
#else
device->init = rt_hwtimer_init;
device->open = rt_hwtimer_open;
device->close = rt_hwtimer_close;
device->read = rt_hwtimer_read;
device->write = rt_hwtimer_write;
device->control = rt_hwtimer_control;
#endif
device->user_data = user_data;
return rt_device_register(device, name, RT_DEVICE_FLAG_RDWR | RT_DEVICE_FLAG_STANDALONE);