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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-08-09 11:23:58 +1000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-08-09 11:23:58 +1000
commit8b449d1f1371e8ecd0b2499034e0b1432cdbe662 (patch)
tree56b203189ef65d853f1355abfc65263d96e44a06 /sound
parent2ed9aae0facd603f9f9b8347d1d7e9de23bde286 (diff)
parentee110066130b79b7abf63bbd836d382699252b81 (diff)
downloadlinux-linaro-android-8b449d1f1371e8ecd0b2499034e0b1432cdbe662.tar.gz
Merge remote branch 'gcl/next' into next
Diffstat (limited to 'sound')
-rw-r--r--sound/soc/fsl/mpc5200_psc_ac97.c22
1 files changed, 18 insertions, 4 deletions
diff --git a/sound/soc/fsl/mpc5200_psc_ac97.c b/sound/soc/fsl/mpc5200_psc_ac97.c
index e2ee220bfb7..e7f5d50ed08 100644
--- a/sound/soc/fsl/mpc5200_psc_ac97.c
+++ b/sound/soc/fsl/mpc5200_psc_ac97.c
@@ -20,6 +20,7 @@
#include <asm/time.h>
#include <asm/delay.h>
+#include <asm/mpc52xx.h>
#include <asm/mpc52xx_psc.h>
#include "mpc5200_dma.h"
@@ -100,19 +101,32 @@ static void psc_ac97_warm_reset(struct snd_ac97 *ac97)
{
struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
+ mutex_lock(&psc_dma->mutex);
+
out_be32(&regs->sicr, psc_dma->sicr | MPC52xx_PSC_SICR_AWR);
udelay(3);
out_be32(&regs->sicr, psc_dma->sicr);
+
+ mutex_unlock(&psc_dma->mutex);
}
static void psc_ac97_cold_reset(struct snd_ac97 *ac97)
{
struct mpc52xx_psc __iomem *regs = psc_dma->psc_regs;
- /* Do a cold reset */
- out_8(&regs->op1, MPC52xx_PSC_OP_RES);
- udelay(10);
- out_8(&regs->op0, MPC52xx_PSC_OP_RES);
+ mutex_lock(&psc_dma->mutex);
+ dev_dbg(psc_dma->dev, "cold reset\n");
+
+ mpc5200_psc_ac97_gpio_reset(psc_dma->id);
+
+ /* Notify the PSC that a reset has occurred */
+ out_be32(&regs->sicr, psc_dma->sicr | MPC52xx_PSC_SICR_ACRB);
+
+ /* Re-enable RX and TX */
+ out_8(&regs->command, MPC52xx_PSC_TX_ENABLE | MPC52xx_PSC_RX_ENABLE);
+
+ mutex_unlock(&psc_dma->mutex);
+
msleep(1);
psc_ac97_warm_reset(ac97);
}