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ASoC: fsi: merge fsi_data_push/pop to fsi_fifo_data_ctrl
Current FSI driver had data push/pop functions. But the main operation of these 2 were very similar. This mean it is possible to merge these to 1 function. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Acked-by: Liam Girdwood <lrg@slimlogic.co.uk> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Kuninori Morimoto
Mark Brown
parent
5bfb9ad084
commit
d8b3353492
@ -560,16 +560,18 @@ static void fsi_soft_all_reset(struct fsi_master *master)
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mdelay(10);
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}
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/* playback interrupt */
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static int fsi_data_push(struct fsi_priv *fsi, int startup)
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static int fsi_fifo_data_ctrl(struct fsi_priv *fsi, int startup, int is_play)
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{
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struct snd_pcm_runtime *runtime;
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struct snd_pcm_substream *substream = NULL;
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u32 status;
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int push_num;
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int push_num_max;
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u32 status_reg = is_play ? DOFF_ST : DIFF_ST;
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int data_residue_num;
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int data_num;
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int data_num_max;
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int ch_width;
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int over_period;
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void (*fn)(struct fsi_priv *fsi, int size);
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if (!fsi ||
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!fsi->substream ||
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@ -596,29 +598,63 @@ static int fsi_data_push(struct fsi_priv *fsi, int startup)
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/* get 1 channel data width */
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ch_width = frames_to_bytes(runtime, 1) / fsi->chan_num;
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/* number of push data */
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push_num = fsi_len2num(fsi->buff_len - fsi->buff_offset, ch_width);
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/* get residue data number of alsa */
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data_residue_num = fsi_len2num(fsi->buff_len - fsi->buff_offset,
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ch_width);
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/* max number of push data */
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push_num_max = (fsi->fifo_max_num * fsi->chan_num) -
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fsi_get_fifo_data_num(fsi, 1);
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if (is_play) {
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/*
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* for play-back
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*
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* data_num_max : number of FSI fifo free space
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* data_num : number of ALSA residue data
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*/
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data_num_max = fsi->fifo_max_num * fsi->chan_num;
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data_num_max -= fsi_get_fifo_data_num(fsi, is_play);
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push_num = min(push_num, push_num_max);
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data_num = data_residue_num;
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switch (ch_width) {
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case 2:
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fsi_dma_soft_push16(fsi, push_num);
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break;
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case 4:
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fsi_dma_soft_push32(fsi, push_num);
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break;
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default:
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return -EINVAL;
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switch (ch_width) {
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case 2:
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fn = fsi_dma_soft_push16;
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break;
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case 4:
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fn = fsi_dma_soft_push32;
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break;
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default:
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return -EINVAL;
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}
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} else {
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/*
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* for capture
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*
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* data_num_max : number of ALSA free space
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* data_num : number of data in FSI fifo
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*/
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data_num_max = data_residue_num;
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data_num = fsi_get_fifo_data_num(fsi, is_play);
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switch (ch_width) {
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case 2:
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fn = fsi_dma_soft_pop16;
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break;
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case 4:
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fn = fsi_dma_soft_pop32;
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break;
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default:
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return -EINVAL;
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}
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}
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fsi->buff_offset += fsi_num2offset(push_num, ch_width);
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data_num = min(data_num, data_num_max);
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status = fsi_reg_read(fsi, DOFF_ST);
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fn(fsi, data_num);
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/* update buff_offset */
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fsi->buff_offset += fsi_num2offset(data_num, ch_width);
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/* check fifo status */
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status = fsi_reg_read(fsi, status_reg);
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if (!startup) {
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struct snd_soc_dai *dai = fsi_get_dai(substream);
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@ -627,9 +663,10 @@ static int fsi_data_push(struct fsi_priv *fsi, int startup)
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if (status & ERR_UNDER)
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dev_err(dai->dev, "under run\n");
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}
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fsi_reg_write(fsi, DOFF_ST, 0);
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fsi_reg_write(fsi, status_reg, 0);
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fsi_irq_enable(fsi, 1);
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/* re-enable irq */
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fsi_irq_enable(fsi, is_play);
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if (over_period)
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snd_pcm_period_elapsed(substream);
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@ -639,77 +676,12 @@ static int fsi_data_push(struct fsi_priv *fsi, int startup)
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static int fsi_data_pop(struct fsi_priv *fsi, int startup)
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{
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struct snd_pcm_runtime *runtime;
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struct snd_pcm_substream *substream = NULL;
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u32 status;
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int pop_num;
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int pop_num_max;
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int ch_width;
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int over_period;
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return fsi_fifo_data_ctrl(fsi, startup, 0);
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}
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if (!fsi ||
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!fsi->substream ||
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!fsi->substream->runtime)
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return -EINVAL;
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over_period = 0;
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substream = fsi->substream;
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runtime = substream->runtime;
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/* FSI FIFO has limit.
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* So, this driver can not send periods data at a time
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*/
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if (fsi->buff_offset >=
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fsi_num2offset(fsi->period_num + 1, fsi->period_len)) {
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over_period = 1;
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fsi->period_num = (fsi->period_num + 1) % runtime->periods;
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if (0 == fsi->period_num)
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fsi->buff_offset = 0;
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}
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/* get 1 channel data width */
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ch_width = frames_to_bytes(runtime, 1) / fsi->chan_num;
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/* get free space for alsa */
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pop_num_max = fsi_len2num(fsi->buff_len - fsi->buff_offset, ch_width);
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/* get recv size */
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pop_num = fsi_get_fifo_data_num(fsi, 0);
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pop_num = min(pop_num_max, pop_num);
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switch (ch_width) {
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case 2:
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fsi_dma_soft_pop16(fsi, pop_num);
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break;
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case 4:
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fsi_dma_soft_pop32(fsi, pop_num);
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break;
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default:
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return -EINVAL;
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}
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fsi->buff_offset += fsi_num2offset(pop_num, ch_width);
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status = fsi_reg_read(fsi, DIFF_ST);
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if (!startup) {
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struct snd_soc_dai *dai = fsi_get_dai(substream);
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if (status & ERR_OVER)
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dev_err(dai->dev, "over run\n");
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if (status & ERR_UNDER)
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dev_err(dai->dev, "under run\n");
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}
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fsi_reg_write(fsi, DIFF_ST, 0);
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fsi_irq_enable(fsi, 0);
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if (over_period)
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snd_pcm_period_elapsed(substream);
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return 0;
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static int fsi_data_push(struct fsi_priv *fsi, int startup)
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{
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return fsi_fifo_data_ctrl(fsi, startup, 1);
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}
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static irqreturn_t fsi_interrupt(int irq, void *data)
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