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drivers: imx: sdma: Introduce sdma_enable_channel 

sdma_start shouldn't be used to enable channel 0. We will reserve
dma_ops to only work on data channels.

For now introduce sdma_enable_channel that will take care of
starting a channel.

Replace internal usage of sdma_start from sdma_run_c0 with
sdma_enable_channel.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
This commit is contained in:
Daniel Baluta 2020-04-08 22:57:14 +03:00 committed by Liam Girdwood
parent 0a4a94f35c
commit 5b39ee1d3f
1 changed files with 7 additions and 3 deletions
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10
src/drivers/imx/sdma.c
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@ -87,6 +87,11 @@ static void sdma_set_overrides(struct dma_chan_data *channel,
host_override ? BIT(channel->index) : 0);
}
static void sdma_enable_channel(struct dma *dma, int channel)
{
dma_reg_write(dma, SDMA_HSTART, BIT(channel));
}
static int sdma_run_c0(struct dma *dma, uint8_t cmd, uint32_t buf_addr,
uint16_t sdma_addr, uint16_t count)
{
@ -114,9 +119,8 @@ static int sdma_run_c0(struct dma *dma, uint8_t cmd, uint32_t buf_addr,
/* Set event override to true so we can manually start channel */
sdma_set_overrides(c0, true, false);
ret = dma_start(&dma->chan[0]);
if (ret < 0)
return ret;
sdma_enable_channel(dma, 0);
/* 1 is BIT(0) for channel 0, the bit will be cleared as the
* channel finishes execution. 1ms is sufficient if everything is fine.