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Commit 6a9364ca authored by Srinivas Kandagatla's avatar Srinivas Kandagatla Committed by Mark Brown
Browse files

ASoC: qcom: apq8016: add wrdma support 



This patch adds wrdma support in lpass-apq8016 by providing the register
offsets and adding support in dma channel allocation callback.

Signed-off-by: default avatarSrinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: default avatarKenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent bbedefb9

sound/soc/qcom/lpass-apq8016.c

+19 −3
Original line number Diff line number Diff line
@@ -137,11 +137,23 @@ static int apq8016_lpass_alloc_dma_channel(struct lpass_data *drvdata, 
					   int direction)

{

	struct lpass_variant *v = drvdata->variant;

	int chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,

	int chan = 0;



	if (direction == SNDRV_PCM_STREAM_PLAYBACK) {

		chan = find_first_zero_bit(&drvdata->dma_ch_bit_map,

					v->rdma_channels);



		if (chan >= v->rdma_channels)

			return -EBUSY;

	} else {

		chan = find_next_zero_bit(&drvdata->dma_ch_bit_map,

					v->wrdma_channel_start +

					v->wrdma_channels,

					v->wrdma_channel_start);



		if (chan >=  v->wrdma_channel_start + v->wrdma_channels)

			return -EBUSY;

	}



	set_bit(chan, &drvdata->dma_ch_bit_map);
@@ -214,6 +226,10 @@ static struct lpass_variant apq8016_data = { 
	.rdma_reg_stride	= 0x1000,

	.rdma_channels		= 2,

	.dmactl_audif_start	= 1,

	.wrdma_reg_base		= 0xB000,

	.wrdma_reg_stride	= 0x1000,

	.wrdma_channel_start	= 5,

	.wrdma_channels		= 2,

	.dai_driver		= apq8016_lpass_cpu_dai_driver,

	.num_dai		= ARRAY_SIZE(apq8016_lpass_cpu_dai_driver),

	.init			= apq8016_lpass_init,