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host: create host_elements_reset() and host_pointer_reset() for common use 

The elements reset code may be shared by params() and stop(),
and the host side pointer resetting code may be used by both
reset() and stop().

Here create separate functions for those common codes, to make
code more clean.

Signed-off-by: Keyon Jie <yang.jie@linux.intel.com>
This commit is contained in:
Keyon Jie 2017-02-11 10:18:06 +08:00 committed by Liam Girdwood
parent 2b72ea7b0e
commit cd77fb05a7
1 changed files with 41 additions and 49 deletions
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90
src/audio/host.c
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@ -498,12 +498,39 @@ unwind:
return -ENOMEM;
}
static int host_elements_reset(struct comp_dev *dev)
{
struct host_data *hd = comp_get_drvdata(dev);
struct dma_sg_elem *source_elem, *sink_elem, *local_elem;
/* setup elem to point to first source elem */
source_elem = list_first_item(&hd->source->elem_list,
struct dma_sg_elem, list);
hd->source->current = &source_elem->list;
hd->source->current_end = source_elem->src + source_elem->size;
/* setup elem to point to first sink elem */
sink_elem = list_first_item(&hd->sink->elem_list,
struct dma_sg_elem, list);
hd->sink->current = &sink_elem->list;
hd->sink->current_end = sink_elem->dest + sink_elem->size;
/* local element */
local_elem = list_first_item(&hd->config.elem_list,
struct dma_sg_elem, list);
local_elem->dest = sink_elem->dest;
local_elem->size = hd->period->size;
local_elem->src = source_elem->src;
hd->next_inc = hd->period->size;
return 0;
}
/* configure the DMA params and descriptors for host buffer IO */
static int host_params(struct comp_dev *dev, struct stream_params *params)
{
struct host_data *hd = comp_get_drvdata(dev);
struct dma_sg_config *config = &hd->config;
struct dma_sg_elem *source_elem, *sink_elem, *local_elem;
int err;
/* set params */
@ -548,25 +575,7 @@ static int host_params(struct comp_dev *dev, struct stream_params *params)
config->dest_width = sizeof(uint32_t);
config->cyclic = 0;
/* setup elem to point to first source elem */
source_elem = list_first_item(&hd->source->elem_list,
struct dma_sg_elem, list);
hd->source->current = &source_elem->list;
hd->source->current_end = source_elem->src + source_elem->size;
/* setup elem to point to first sink elem */
sink_elem = list_first_item(&hd->sink->elem_list,
struct dma_sg_elem, list);
hd->sink->current = &sink_elem->list;
hd->sink->current_end = sink_elem->dest + sink_elem->size;
/* local element */
local_elem = list_first_item(&hd->config.elem_list,
struct dma_sg_elem, list);
local_elem->dest = sink_elem->dest;
local_elem->size = hd->period->size;
local_elem->src = source_elem->src;
hd->next_inc = hd->period->size;
host_elements_reset(dev);
return 0;
}
@ -652,10 +661,9 @@ static struct comp_dev* host_volume_component(struct comp_dev *host)
return comp_dev;
}
static int host_stop(struct comp_dev *dev)
static int host_pointer_reset(struct comp_dev *dev)
{
struct host_data *hd = comp_get_drvdata(dev);
struct dma_sg_elem *source_elem, *sink_elem, *local_elem;
/* reset buffer pointers */
if (hd->host_pos)
@ -663,30 +671,19 @@ static int host_stop(struct comp_dev *dev)
hd->host_app_pos = 0;
hd->host_pos_read = 0;
hd->host_period_pos = 0;
host_update_buffer_consume(hd);
hd->host_size = 0;
hd->host_avail= 0;
/* reset buffer pointers and local_elem, to let next start
from original one */
return 0;
}
/* setup elem to point to first source elem */
source_elem = list_first_item(&hd->source->elem_list,
struct dma_sg_elem, list);
hd->source->current = &source_elem->list;
hd->source->current_end = source_elem->src + source_elem->size;
static int host_stop(struct comp_dev *dev)
{
/* reset host side buffer pointers */
host_pointer_reset(dev);
/* setup elem to point to first sink elem */
sink_elem = list_first_item(&hd->sink->elem_list,
struct dma_sg_elem, list);
hd->sink->current = &sink_elem->list;
hd->sink->current_end = sink_elem->dest + sink_elem->size;
/* local element */
local_elem = list_first_item(&hd->config.elem_list,
struct dma_sg_elem, list);
local_elem->dest = sink_elem->dest;
local_elem->size = hd->period->size;
local_elem->src = source_elem->src;
hd->next_inc = hd->period->size;
/* reset elements, to let next start from original one */
host_elements_reset(dev);
/* now reset downstream buffer */
comp_buffer_reset(dev);
@ -786,15 +783,10 @@ static int host_reset(struct comp_dev *dev)
rfree(RZONE_MODULE, RMOD_SYS, e);
}
hd->host_size = 0;
hd->host_avail= 0;
if (hd->host_pos)
*hd->host_pos = 0;
host_pointer_reset(dev);
hd->host_pos = NULL;
hd->host_app_pos = 0;
hd->host_period_bytes = 0;
hd->host_pos_read = 0;
hd->source = NULL;
hd->sink = NULL;
dev->state = COMP_STATE_INIT;