ASoC: change set_tdm_slot api to allow slot_width override.

Extend set_tdm_slot to allow the user to arbitrarily set the frame width
and active TX/RX slots.

Updates magician.c and wm9081.c for the new set_tdm_slot(). wm9081.c
still doesn't handle the slot_width override.

While being there, correct an incorrect use of SlotsPerFrm(7) use in
bitmask on pxa-ssp.c (SSCR0_SlotsPerFrm(x) is (((x) - 1) << 24)) ).

(this series is meant for Mark's for-2.6.32 branch)

Signed-off-by: Daniel Ribeiro <drwyrm@gmail.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>

1 files changed, 20 insertions, 7 deletions

diff --git a/sound/soc/pxa/pxa-ssp.c b/sound/soc/pxa/pxa-ssp.c
index e22c5cef8fec..5b9ed6464789 100644
--- a/sound/soc/pxa/pxa-ssp.c
+++ b/sound/soc/pxa/pxa-ssp.c
@@ -375,21 +375,34 @@ static int pxa_ssp_set_dai_pll(struct snd_soc_dai *cpu_dai,
  * Set the active slots in TDM/Network mode
  */
 static int pxa_ssp_set_dai_tdm_slot(struct snd_soc_dai *cpu_dai,
-        unsigned int mask, int slots)
+        unsigned int tx_mask, unsigned int rx_mask, int slots, int slot_width)
 {
         struct ssp_priv *priv = cpu_dai->private_data;
         struct ssp_device *ssp = priv->dev.ssp;
         u32 sscr0;
 
-        sscr0 = ssp_read_reg(ssp, SSCR0) & ~SSCR0_SlotsPerFrm(7);
+        sscr0 = ssp_read_reg(ssp, SSCR0);
+        sscr0 &= ~(SSCR0_MOD | SSCR0_SlotsPerFrm(8) | SSCR0_EDSS | SSCR0_DSS);
+
+        /* set slot width */
+        if (slot_width > 16)
+                sscr0 |= SSCR0_EDSS | SSCR0_DataSize(slot_width - 16);
+        else
+                sscr0 |= SSCR0_DataSize(slot_width);
 
-        /* set number of active slots */
-        sscr0 |= SSCR0_SlotsPerFrm(slots);
+        if (slots > 1) {
+                /* enable network mode */
+                sscr0 |= SSCR0_MOD;
+
+                /* set number of active slots */
+                sscr0 |= SSCR0_SlotsPerFrm(slots);
+
+                /* set active slot mask */
+                ssp_write_reg(ssp, SSTSA, tx_mask);
+                ssp_write_reg(ssp, SSRSA, rx_mask);
+        }
         ssp_write_reg(ssp, SSCR0, sscr0);
 
-        /* set active slot mask */
-        ssp_write_reg(ssp, SSTSA, mask);
-        ssp_write_reg(ssp, SSRSA, mask);
         return 0;
 }