static const unsigned long omap34xx_mcbsp_port[][2] = {};
#endif
+static void omap_mcbsp_set_threshold(struct snd_pcm_substream *substream)
+{
+ struct snd_soc_pcm_runtime *rtd = substream->private_data;
+ struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
+ struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data);
+ int dma_op_mode = omap_mcbsp_get_dma_op_mode(mcbsp_data->bus_id);
+ int samples;
+
+ /* TODO: Currently, MODE_ELEMENT == MODE_FRAME */
+ if (dma_op_mode == MCBSP_DMA_MODE_THRESHOLD)
+ samples = snd_pcm_lib_period_bytes(substream) >> 1;
+ else
+ samples = 1;
+
+ /* Configure McBSP internal buffer usage */
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ omap_mcbsp_set_tx_threshold(mcbsp_data->bus_id, samples - 1);
+ else
+ omap_mcbsp_set_rx_threshold(mcbsp_data->bus_id, samples - 1);
+}
+
static int omap_mcbsp_dai_startup(struct snd_pcm_substream *substream,
struct snd_soc_dai *dai)
{
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data);
+ int bus_id = mcbsp_data->bus_id;
int err = 0;
- if (cpu_is_omap343x() && mcbsp_data->bus_id == 1) {
+ if (!cpu_dai->active)
+ err = omap_mcbsp_request(bus_id);
+
+ if (cpu_is_omap343x()) {
+ int dma_op_mode = omap_mcbsp_get_dma_op_mode(bus_id);
+ int max_period;
+
/*
* McBSP2 in OMAP3 has 1024 * 32-bit internal audio buffer.
* Set constraint for minimum buffer size to the same than FIFO
* size in order to avoid underruns in playback startup because
* HW is keeping the DMA request active until FIFO is filled.
*/
- snd_pcm_hw_constraint_minmax(substream->runtime,
- SNDRV_PCM_HW_PARAM_BUFFER_BYTES, 4096, UINT_MAX);
- }
+ if (bus_id == 1)
+ snd_pcm_hw_constraint_minmax(substream->runtime,
+ SNDRV_PCM_HW_PARAM_BUFFER_BYTES,
+ 4096, UINT_MAX);
- if (!cpu_dai->active)
- err = omap_mcbsp_request(mcbsp_data->bus_id);
+ if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK)
+ max_period = omap_mcbsp_get_max_tx_threshold(bus_id);
+ else
+ max_period = omap_mcbsp_get_max_rx_threshold(bus_id);
+
+ max_period++;
+ max_period <<= 1;
+
+ if (dma_op_mode == MCBSP_DMA_MODE_THRESHOLD)
+ snd_pcm_hw_constraint_minmax(substream->runtime,
+ SNDRV_PCM_HW_PARAM_PERIOD_BYTES,
+ 32, max_period);
+ }
return err;
}
struct snd_soc_pcm_runtime *rtd = substream->private_data;
struct snd_soc_dai *cpu_dai = rtd->dai->cpu_dai;
struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data);
- int err = 0;
+ int err = 0, play = (substream->stream == SNDRV_PCM_STREAM_PLAYBACK);
switch (cmd) {
case SNDRV_PCM_TRIGGER_START:
case SNDRV_PCM_TRIGGER_RESUME:
case SNDRV_PCM_TRIGGER_PAUSE_RELEASE:
- if (!mcbsp_data->active++)
- omap_mcbsp_start(mcbsp_data->bus_id);
+ mcbsp_data->active++;
+ omap_mcbsp_start(mcbsp_data->bus_id, play, !play);
break;
case SNDRV_PCM_TRIGGER_STOP:
case SNDRV_PCM_TRIGGER_SUSPEND:
case SNDRV_PCM_TRIGGER_PAUSE_PUSH:
- if (!--mcbsp_data->active)
- omap_mcbsp_stop(mcbsp_data->bus_id);
+ omap_mcbsp_stop(mcbsp_data->bus_id, play, !play);
+ mcbsp_data->active--;
break;
default:
err = -EINVAL;
struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data);
struct omap_mcbsp_reg_cfg *regs = &mcbsp_data->regs;
int dma, bus_id = mcbsp_data->bus_id, id = cpu_dai->id;
- int wlen, channels, wpf;
+ int wlen, channels, wpf, sync_mode = OMAP_DMA_SYNC_ELEMENT;
unsigned long port;
unsigned int format;
} else if (cpu_is_omap343x()) {
dma = omap24xx_dma_reqs[bus_id][substream->stream];
port = omap34xx_mcbsp_port[bus_id][substream->stream];
+ omap_mcbsp_dai_dma_params[id][substream->stream].set_threshold =
+ omap_mcbsp_set_threshold;
+ /* TODO: Currently, MODE_ELEMENT == MODE_FRAME */
+ if (omap_mcbsp_get_dma_op_mode(bus_id) ==
+ MCBSP_DMA_MODE_THRESHOLD)
+ sync_mode = OMAP_DMA_SYNC_FRAME;
} else {
return -ENODEV;
}
substream->stream ? "Audio Capture" : "Audio Playback";
omap_mcbsp_dai_dma_params[id][substream->stream].dma_req = dma;
omap_mcbsp_dai_dma_params[id][substream->stream].port_addr = port;
+ omap_mcbsp_dai_dma_params[id][substream->stream].sync_mode = sync_mode;
cpu_dai->dma_data = &omap_mcbsp_dai_dma_params[id][substream->stream];
if (mcbsp_data->configured) {
/* Generic McBSP register settings */
regs->spcr2 |= XINTM(3) | FREE;
regs->spcr1 |= RINTM(3);
- regs->rcr2 |= RFIG;
- regs->xcr2 |= XFIG;
+ /* RFIG and XFIG are not defined in 34xx */
+ if (!cpu_is_omap34xx()) {
+ regs->rcr2 |= RFIG;
+ regs->xcr2 |= XFIG;
+ }
if (cpu_is_omap2430() || cpu_is_omap34xx()) {
- regs->xccr = DXENDLY(1) | XDMAEN;
- regs->rccr = RFULL_CYCLE | RDMAEN;
+ regs->xccr = DXENDLY(1) | XDMAEN | XDISABLE;
+ regs->rccr = RFULL_CYCLE | RDMAEN | RDISABLE;
}
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
return 0;
}
+static int omap_mcbsp_dai_set_rcvr_src(struct omap_mcbsp_data *mcbsp_data,
+ int clk_id)
+{
+ int sel_bit, set = 0;
+ u16 reg = OMAP2_CONTROL_DEVCONF0;
+
+ if (cpu_class_is_omap1())
+ return -EINVAL; /* TODO: Can this be implemented for OMAP1? */
+ if (mcbsp_data->bus_id != 0)
+ return -EINVAL;
+
+ switch (clk_id) {
+ case OMAP_MCBSP_CLKR_SRC_CLKX:
+ set = 1;
+ case OMAP_MCBSP_CLKR_SRC_CLKR:
+ sel_bit = 3;
+ break;
+ case OMAP_MCBSP_FSR_SRC_FSX:
+ set = 1;
+ case OMAP_MCBSP_FSR_SRC_FSR:
+ sel_bit = 4;
+ break;
+ default:
+ return -EINVAL;
+ }
+
+ if (set)
+ omap_ctrl_writel(omap_ctrl_readl(reg) | (1 << sel_bit), reg);
+ else
+ omap_ctrl_writel(omap_ctrl_readl(reg) & ~(1 << sel_bit), reg);
+
+ return 0;
+}
+
static int omap_mcbsp_dai_set_dai_sysclk(struct snd_soc_dai *cpu_dai,
int clk_id, unsigned int freq,
int dir)
case OMAP_MCBSP_SYSCLK_CLKR_EXT:
regs->pcr0 |= SCLKME;
break;
+
+ case OMAP_MCBSP_CLKR_SRC_CLKR:
+ case OMAP_MCBSP_CLKR_SRC_CLKX:
+ case OMAP_MCBSP_FSR_SRC_FSR:
+ case OMAP_MCBSP_FSR_SRC_FSX:
+ err = omap_mcbsp_dai_set_rcvr_src(mcbsp_data, clk_id);
+ break;
default:
err = -ENODEV;
}
git.openpandora.org / pandora-kernel.git / blobdiff