u16 syscon;
syscon = OMAP_MCBSP_READ(mcbsp->io_base, SYSCON);
- syscon &= ~(ENAWAKEUP | SIDLEMODE(0x03));
- syscon |= (ENAWAKEUP | SIDLEMODE(0x02));
- OMAP_MCBSP_WRITE(mcbsp->io_base, SYSCON, syscon);
+ syscon &= ~(ENAWAKEUP | SIDLEMODE(0x03) | CLOCKACTIVITY(0x03));
+
+ spin_lock_irq(&mcbsp->lock);
+ if (mcbsp->dma_op_mode == MCBSP_DMA_MODE_THRESHOLD) {
+ syscon |= (ENAWAKEUP | SIDLEMODE(0x02) |
+ CLOCKACTIVITY(0x02));
+ OMAP_MCBSP_WRITE(mcbsp->io_base, WAKEUPEN,
+ XRDYEN | RRDYEN);
+ } else {
+ syscon |= SIDLEMODE(0x01);
+ }
+ spin_unlock_irq(&mcbsp->lock);
- OMAP_MCBSP_WRITE(mcbsp->io_base, WAKEUPEN, XRDYEN | RRDYEN);
+ OMAP_MCBSP_WRITE(mcbsp->io_base, SYSCON, syscon);
}
}
u16 syscon;
syscon = OMAP_MCBSP_READ(mcbsp->io_base, SYSCON);
- syscon &= ~(ENAWAKEUP | SIDLEMODE(0x03));
+ syscon &= ~(ENAWAKEUP | SIDLEMODE(0x03) | CLOCKACTIVITY(0x03));
+ /*
+ * HW bug workaround - If no_idle mode is taken, we need to
+ * go to smart_idle before going to always_idle, or the
+ * device will not hit retention anymore.
+ */
+ syscon |= SIDLEMODE(0x02);
+ OMAP_MCBSP_WRITE(mcbsp->io_base, SYSCON, syscon);
+
+ syscon &= ~(SIDLEMODE(0x03));
OMAP_MCBSP_WRITE(mcbsp->io_base, SYSCON, syscon);
OMAP_MCBSP_WRITE(mcbsp->io_base, WAKEUPEN, 0);
}
/* Enable transmitter and receiver */
+ tx &= 1;
w = OMAP_MCBSP_READ(io_base, SPCR2);
- OMAP_MCBSP_WRITE(io_base, SPCR2, w | (tx & 1));
+ OMAP_MCBSP_WRITE(io_base, SPCR2, w | tx);
+ rx &= 1;
w = OMAP_MCBSP_READ(io_base, SPCR1);
- OMAP_MCBSP_WRITE(io_base, SPCR1, w | (rx & 1));
+ OMAP_MCBSP_WRITE(io_base, SPCR1, w | rx);
/*
* Worst case: CLKSRG*2 = 8000khz: (1/8000) * 2 * 2 usec
OMAP_MCBSP_WRITE(io_base, SPCR2, w | (1 << 7));
}
+ if (cpu_is_omap2430() || cpu_is_omap34xx()) {
+ /* Release the transmitter and receiver */
+ w = OMAP_MCBSP_READ(io_base, XCCR);
+ w &= ~(tx ? XDISABLE : 0);
+ OMAP_MCBSP_WRITE(io_base, XCCR, w);
+ w = OMAP_MCBSP_READ(io_base, RCCR);
+ w &= ~(rx ? RDISABLE : 0);
+ OMAP_MCBSP_WRITE(io_base, RCCR, w);
+ }
+
/* Dump McBSP Regs */
omap_mcbsp_dump_reg(id);
}
io_base = mcbsp->io_base;
/* Reset transmitter */
+ tx &= 1;
+ if (cpu_is_omap2430() || cpu_is_omap34xx()) {
+ w = OMAP_MCBSP_READ(io_base, XCCR);
+ w |= (tx ? XDISABLE : 0);
+ OMAP_MCBSP_WRITE(io_base, XCCR, w);
+ }
w = OMAP_MCBSP_READ(io_base, SPCR2);
- OMAP_MCBSP_WRITE(io_base, SPCR2, w & ~(tx & 1));
+ OMAP_MCBSP_WRITE(io_base, SPCR2, w & ~tx);
/* Reset receiver */
+ rx &= 1;
+ if (cpu_is_omap2430() || cpu_is_omap34xx()) {
+ w = OMAP_MCBSP_READ(io_base, RCCR);
+ w |= (tx ? RDISABLE : 0);
+ OMAP_MCBSP_WRITE(io_base, RCCR, w);
+ }
w = OMAP_MCBSP_READ(io_base, SPCR1);
- OMAP_MCBSP_WRITE(io_base, SPCR1, w & ~(rx & 1));
+ OMAP_MCBSP_WRITE(io_base, SPCR1, w & ~rx);
idle = !((OMAP_MCBSP_READ(io_base, SPCR2) |
OMAP_MCBSP_READ(io_base, SPCR1)) & 1);
}
EXPORT_SYMBOL(omap_mcbsp_stop);
-void omap_mcbsp_xmit_enable(unsigned int id, u8 enable)
-{
- struct omap_mcbsp *mcbsp;
- void __iomem *io_base;
- u16 w;
-
- if (!(cpu_is_omap2430() || cpu_is_omap34xx()))
- return;
-
- if (!omap_mcbsp_check_valid_id(id)) {
- printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
- return;
- }
-
- mcbsp = id_to_mcbsp_ptr(id);
- io_base = mcbsp->io_base;
-
- w = OMAP_MCBSP_READ(io_base, XCCR);
-
- if (enable)
- OMAP_MCBSP_WRITE(io_base, XCCR, w & ~(XDISABLE));
- else
- OMAP_MCBSP_WRITE(io_base, XCCR, w | XDISABLE);
-}
-EXPORT_SYMBOL(omap_mcbsp_xmit_enable);
-
-void omap_mcbsp_recv_enable(unsigned int id, u8 enable)
-{
- struct omap_mcbsp *mcbsp;
- void __iomem *io_base;
- u16 w;
-
- if (!(cpu_is_omap2430() || cpu_is_omap34xx()))
- return;
-
- if (!omap_mcbsp_check_valid_id(id)) {
- printk(KERN_ERR "%s: Invalid id (%d)\n", __func__, id + 1);
- return;
- }
-
- mcbsp = id_to_mcbsp_ptr(id);
- io_base = mcbsp->io_base;
-
- w = OMAP_MCBSP_READ(io_base, RCCR);
-
- if (enable)
- OMAP_MCBSP_WRITE(io_base, RCCR, w & ~(RDISABLE));
- else
- OMAP_MCBSP_WRITE(io_base, RCCR, w | RDISABLE);
-}
-EXPORT_SYMBOL(omap_mcbsp_recv_enable);
-
/* polled mcbsp i/o operations */
int omap_mcbsp_pollwrite(unsigned int id, u16 buf)
{
THRESHOLD_PROP_BUILDER(max_tx_thres);
THRESHOLD_PROP_BUILDER(max_rx_thres);
+static const char *dma_op_modes[] = {
+ "element", "threshold", "frame",
+};
+
static ssize_t dma_op_mode_show(struct device *dev,
struct device_attribute *attr, char *buf)
{
struct omap_mcbsp *mcbsp = dev_get_drvdata(dev);
- int dma_op_mode;
+ int dma_op_mode, i = 0;
+ ssize_t len = 0;
+ const char * const *s;
spin_lock_irq(&mcbsp->lock);
dma_op_mode = mcbsp->dma_op_mode;
spin_unlock_irq(&mcbsp->lock);
- return sprintf(buf, "current mode: %d\n"
- "possible mode values are:\n"
- "%d - %s\n"
- "%d - %s\n"
- "%d - %s\n",
- dma_op_mode,
- MCBSP_DMA_MODE_ELEMENT, "element mode",
- MCBSP_DMA_MODE_THRESHOLD, "threshold mode",
- MCBSP_DMA_MODE_FRAME, "frame mode");
+ for (s = &dma_op_modes[i]; i < ARRAY_SIZE(dma_op_modes); s++, i++) {
+ if (dma_op_mode == i)
+ len += sprintf(buf + len, "[%s] ", *s);
+ else
+ len += sprintf(buf + len, "%s ", *s);
+ }
+ len += sprintf(buf + len, "\n");
+
+ return len;
}
static ssize_t dma_op_mode_store(struct device *dev,
const char *buf, size_t size)
{
struct omap_mcbsp *mcbsp = dev_get_drvdata(dev);
- unsigned long val;
- int status;
+ const char * const *s;
+ int i = 0;
- status = strict_strtoul(buf, 0, &val);
- if (status)
- return status;
+ for (s = &dma_op_modes[i]; i < ARRAY_SIZE(dma_op_modes); s++, i++)
+ if (sysfs_streq(buf, *s))
+ break;
- spin_lock_irq(&mcbsp->lock);
+ if (i == ARRAY_SIZE(dma_op_modes))
+ return -EINVAL;
+ spin_lock_irq(&mcbsp->lock);
if (!mcbsp->free) {
size = -EBUSY;
goto unlock;
}
-
- if (val > MCBSP_DMA_MODE_FRAME || val < MCBSP_DMA_MODE_ELEMENT) {
- size = -EINVAL;
- goto unlock;
- }
-
- mcbsp->dma_op_mode = val;
+ mcbsp->dma_op_mode = i;
unlock:
spin_unlock_irq(&mcbsp->lock);
git.openpandora.org / pandora-kernel.git / blobdiff