*
* Copyright (C) 2008 Nokia Corporation
*
- * Contact: Jarkko Nikula <jarkko.nikula@nokia.com>
+ * Contact: Jarkko Nikula <jhnikula@gmail.com>
+ * Peter Ujfalusi <peter.ujfalusi@nokia.com>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data);
int err = 0;
+ if (cpu_is_omap343x() && mcbsp_data->bus_id == 1) {
+ /*
+ * 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 (!cpu_dai->active)
err = omap_mcbsp_request(mcbsp_data->bus_id);
break;
case SND_SOC_DAIFMT_DSP_B:
regs->srgr2 |= FPER(wlen * channels - 1);
- regs->srgr1 |= FWID(wlen * channels - 2);
+ regs->srgr1 |= FWID(0);
break;
}
{
struct omap_mcbsp_data *mcbsp_data = to_mcbsp(cpu_dai->private_data);
struct omap_mcbsp_reg_cfg *regs = &mcbsp_data->regs;
+ unsigned int temp_fmt = fmt;
if (mcbsp_data->configured)
return 0;
regs->spcr1 |= RINTM(3);
regs->rcr2 |= RFIG;
regs->xcr2 |= XFIG;
+ if (cpu_is_omap2430() || cpu_is_omap34xx()) {
+ regs->xccr = DXENDLY(1) | XDMAEN;
+ regs->rccr = RFULL_CYCLE | RDMAEN;
+ }
switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) {
case SND_SOC_DAIFMT_I2S:
/* 0-bit data delay */
regs->rcr2 |= RDATDLY(0);
regs->xcr2 |= XDATDLY(0);
+ /* Invert FS polarity configuration */
+ temp_fmt ^= SND_SOC_DAIFMT_NB_IF;
break;
default:
/* Unsupported data format */
}
/* Set bit clock (CLKX/CLKR) and FS polarities */
- switch (fmt & SND_SOC_DAIFMT_INV_MASK) {
+ switch (temp_fmt & SND_SOC_DAIFMT_INV_MASK) {
case SND_SOC_DAIFMT_NB_NF:
/*
* Normal BCLK + FS.
return err;
}
+static struct snd_soc_dai_ops omap_mcbsp_dai_ops = {
+ .startup = omap_mcbsp_dai_startup,
+ .shutdown = omap_mcbsp_dai_shutdown,
+ .trigger = omap_mcbsp_dai_trigger,
+ .hw_params = omap_mcbsp_dai_hw_params,
+ .set_fmt = omap_mcbsp_dai_set_dai_fmt,
+ .set_clkdiv = omap_mcbsp_dai_set_clkdiv,
+ .set_sysclk = omap_mcbsp_dai_set_dai_sysclk,
+};
+
#define OMAP_MCBSP_DAI_BUILDER(link_id) \
{ \
.name = "omap-mcbsp-dai-"#link_id, \
.rates = OMAP_MCBSP_RATES, \
.formats = SNDRV_PCM_FMTBIT_S16_LE, \
}, \
- .ops = { \
- .startup = omap_mcbsp_dai_startup, \
- .shutdown = omap_mcbsp_dai_shutdown, \
- .trigger = omap_mcbsp_dai_trigger, \
- .hw_params = omap_mcbsp_dai_hw_params, \
- .set_fmt = omap_mcbsp_dai_set_dai_fmt, \
- .set_clkdiv = omap_mcbsp_dai_set_clkdiv, \
- .set_sysclk = omap_mcbsp_dai_set_dai_sysclk, \
- }, \
+ .ops = &omap_mcbsp_dai_ops, \
.private_data = &mcbsp_data[(link_id)].bus_id, \
}
}
module_exit(snd_omap_mcbsp_exit);
-MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@nokia.com>");
+MODULE_AUTHOR("Jarkko Nikula <jhnikula@gmail.com>");
MODULE_DESCRIPTION("OMAP I2S SoC Interface");
MODULE_LICENSE("GPL");