ASoC: Davinci: McASP: add support new McASP IP Variant
The OMAP2+ variant of McASP is different from Davinci variant w.r.to
some register offset.
Changes
- Add new MCASP_VERSION_3 to identify new variant. New DT compatible
"ti,omap2-mcasp-audio" to identify version 3 controller.
- The register offsets are handled depending on the version.
Note:
DMA parameters (dma fifo offset) are not updated and will be done later.
Signed-off-by: Hebbar, Gururaja <gururaja.hebbar@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/sound/soc/davinci/davinci-mcasp.c b/sound/soc/davinci/davinci-mcasp.c
index c3eae1d..714e51e 100644
--- a/sound/soc/davinci/davinci-mcasp.c
+++ b/sound/soc/davinci/davinci-mcasp.c
@@ -111,6 +111,10 @@
#define DAVINCI_MCASP_WFIFOSTS (0x1014)
#define DAVINCI_MCASP_RFIFOCTL (0x1018)
#define DAVINCI_MCASP_RFIFOSTS (0x101C)
+#define MCASP_VER3_WFIFOCTL (0x1000)
+#define MCASP_VER3_WFIFOSTS (0x1004)
+#define MCASP_VER3_RFIFOCTL (0x1008)
+#define MCASP_VER3_RFIFOSTS (0x100C)
/*
* DAVINCI_MCASP_PWREMUMGT_REG - Power Down and Emulation Management
@@ -384,18 +388,36 @@
{
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
if (dev->txnumevt) { /* enable FIFO */
- mcasp_clr_bits(dev->base + DAVINCI_MCASP_WFIFOCTL,
+ switch (dev->version) {
+ case MCASP_VERSION_3:
+ mcasp_clr_bits(dev->base + MCASP_VER3_WFIFOCTL,
FIFO_ENABLE);
- mcasp_set_bits(dev->base + DAVINCI_MCASP_WFIFOCTL,
+ mcasp_set_bits(dev->base + MCASP_VER3_WFIFOCTL,
FIFO_ENABLE);
+ break;
+ default:
+ mcasp_clr_bits(dev->base +
+ DAVINCI_MCASP_WFIFOCTL, FIFO_ENABLE);
+ mcasp_set_bits(dev->base +
+ DAVINCI_MCASP_WFIFOCTL, FIFO_ENABLE);
+ }
}
mcasp_start_tx(dev);
} else {
if (dev->rxnumevt) { /* enable FIFO */
- mcasp_clr_bits(dev->base + DAVINCI_MCASP_RFIFOCTL,
+ switch (dev->version) {
+ case MCASP_VERSION_3:
+ mcasp_clr_bits(dev->base + MCASP_VER3_RFIFOCTL,
FIFO_ENABLE);
- mcasp_set_bits(dev->base + DAVINCI_MCASP_RFIFOCTL,
+ mcasp_set_bits(dev->base + MCASP_VER3_RFIFOCTL,
FIFO_ENABLE);
+ break;
+ default:
+ mcasp_clr_bits(dev->base +
+ DAVINCI_MCASP_RFIFOCTL, FIFO_ENABLE);
+ mcasp_set_bits(dev->base +
+ DAVINCI_MCASP_RFIFOCTL, FIFO_ENABLE);
+ }
}
mcasp_start_rx(dev);
}
@@ -416,14 +438,31 @@
static void davinci_mcasp_stop(struct davinci_audio_dev *dev, int stream)
{
if (stream == SNDRV_PCM_STREAM_PLAYBACK) {
- if (dev->txnumevt) /* disable FIFO */
- mcasp_clr_bits(dev->base + DAVINCI_MCASP_WFIFOCTL,
+ if (dev->txnumevt) { /* disable FIFO */
+ switch (dev->version) {
+ case MCASP_VERSION_3:
+ mcasp_clr_bits(dev->base + MCASP_VER3_WFIFOCTL,
FIFO_ENABLE);
+ break;
+ default:
+ mcasp_clr_bits(dev->base +
+ DAVINCI_MCASP_WFIFOCTL, FIFO_ENABLE);
+ }
+ }
mcasp_stop_tx(dev);
} else {
- if (dev->rxnumevt) /* disable FIFO */
- mcasp_clr_bits(dev->base + DAVINCI_MCASP_RFIFOCTL,
+ if (dev->rxnumevt) { /* disable FIFO */
+ switch (dev->version) {
+ case MCASP_VERSION_3:
+ mcasp_clr_bits(dev->base + MCASP_VER3_RFIFOCTL,
FIFO_ENABLE);
+ break;
+
+ default:
+ mcasp_clr_bits(dev->base +
+ DAVINCI_MCASP_RFIFOCTL, FIFO_ENABLE);
+ }
+ }
mcasp_stop_rx(dev);
}
}
@@ -622,20 +661,37 @@
if (dev->txnumevt * tx_ser > 64)
dev->txnumevt = 1;
- mcasp_mod_bits(dev->base + DAVINCI_MCASP_WFIFOCTL, tx_ser,
+ switch (dev->version) {
+ case MCASP_VERSION_3:
+ mcasp_mod_bits(dev->base + MCASP_VER3_WFIFOCTL, tx_ser,
NUMDMA_MASK);
- mcasp_mod_bits(dev->base + DAVINCI_MCASP_WFIFOCTL,
+ mcasp_mod_bits(dev->base + MCASP_VER3_WFIFOCTL,
((dev->txnumevt * tx_ser) << 8), NUMEVT_MASK);
+ break;
+ default:
+ mcasp_mod_bits(dev->base + DAVINCI_MCASP_WFIFOCTL,
+ tx_ser, NUMDMA_MASK);
+ mcasp_mod_bits(dev->base + DAVINCI_MCASP_WFIFOCTL,
+ ((dev->txnumevt * tx_ser) << 8), NUMEVT_MASK);
+ }
}
if (dev->rxnumevt && stream == SNDRV_PCM_STREAM_CAPTURE) {
if (dev->rxnumevt * rx_ser > 64)
dev->rxnumevt = 1;
-
- mcasp_mod_bits(dev->base + DAVINCI_MCASP_RFIFOCTL, rx_ser,
+ switch (dev->version) {
+ case MCASP_VERSION_3:
+ mcasp_mod_bits(dev->base + MCASP_VER3_RFIFOCTL, rx_ser,
NUMDMA_MASK);
- mcasp_mod_bits(dev->base + DAVINCI_MCASP_RFIFOCTL,
+ mcasp_mod_bits(dev->base + MCASP_VER3_RFIFOCTL,
((dev->rxnumevt * rx_ser) << 8), NUMEVT_MASK);
+ break;
+ default:
+ mcasp_mod_bits(dev->base + DAVINCI_MCASP_RFIFOCTL,
+ rx_ser, NUMDMA_MASK);
+ mcasp_mod_bits(dev->base + DAVINCI_MCASP_RFIFOCTL,
+ ((dev->rxnumevt * rx_ser) << 8), NUMEVT_MASK);
+ }
}
}
@@ -874,6 +930,10 @@
.compatible = "ti,da830-mcasp-audio",
.data = (void *)MCASP_VERSION_2,
},
+ {
+ .compatible = "ti,omap2-mcasp-audio",
+ .data = (void *)MCASP_VERSION_3,
+ },
{ /* sentinel */ }
};
MODULE_DEVICE_TABLE(of, mcasp_dt_ids);