diff options
| author | Srinivas Kandagatla <srinivas.kandagatla@linaro.org> | 2016-02-11 15:19:30 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2016-02-19 19:20:18 +0300 |
| commit | 6a9364ca6fa07ec215b0ba7c49d110b8236985d4 (patch) | |
| tree | 047c264c555100400b393273ff5474be9197d5ca /sound/soc/qcom/lpass-apq8016.c | |
| parent | bbedefb9e8c350bc7e8e7dc4732ba1974789e3e9 (diff) | |
| download | linux-6a9364ca6fa07ec215b0ba7c49d110b8236985d4.tar.xz | |
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: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Kenneth Westfield <kwestfie@codeaurora.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'sound/soc/qcom/lpass-apq8016.c')
| -rw-r--r-- | sound/soc/qcom/lpass-apq8016.c | 22 |
1 files changed, 19 insertions, 3 deletions
diff --git a/sound/soc/qcom/lpass-apq8016.c b/sound/soc/qcom/lpass-apq8016.c index ca3bbd58c81a..3eef0c37ba50 100644 --- a/sound/soc/qcom/lpass-apq8016.c +++ b/sound/soc/qcom/lpass-apq8016.c @@ -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; + 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, |