summaryrefslogtreecommitdiffstats
diff options
context:
space:
mode:
Diffstat
-rw-r--r--arch/arm/plat-omap/mcbsp.c78
1 files changed, 47 insertions, 31 deletions
diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
index 61e440a0f7cd..473be3dc2cf5 100644
--- a/arch/arm/plat-omap/mcbsp.c
+++ b/arch/arm/plat-omap/mcbsp.c
@@ -114,7 +114,8 @@ static irqreturn_t omap_mcbsp_tx_irq_handler(int irq, void *dev_id)
dev_err(mcbsp_tx->dev, "TX Frame Sync Error! : 0x%x\n",
irqst_spcr2);
/* Writing zero to XSYNC_ERR clears the IRQ */
- MCBSP_WRITE(mcbsp_tx, SPCR2, irqst_spcr2 & ~(XSYNC_ERR));
+ MCBSP_WRITE(mcbsp_tx, SPCR2,
+ MCBSP_READ_CACHE(mcbsp_tx, SPCR2) & ~(XSYNC_ERR));
} else {
complete(&mcbsp_tx->tx_irq_completion);
}
@@ -134,7 +135,8 @@ static irqreturn_t omap_mcbsp_rx_irq_handler(int irq, void *dev_id)
dev_err(mcbsp_rx->dev, "RX Frame Sync Error! : 0x%x\n",
irqst_spcr1);
/* Writing zero to RSYNC_ERR clears the IRQ */
- MCBSP_WRITE(mcbsp_rx, SPCR1, irqst_spcr1 & ~(RSYNC_ERR));
+ MCBSP_WRITE(mcbsp_rx, SPCR1,
+ MCBSP_READ_CACHE(mcbsp_rx, SPCR1) & ~(RSYNC_ERR));
} else {
complete(&mcbsp_rx->tx_irq_completion);
}
@@ -544,24 +546,25 @@ void omap_mcbsp_start(unsigned int id, int tx, int rx)
}
mcbsp = id_to_mcbsp_ptr(id);
- mcbsp->rx_word_length = (MCBSP_READ(mcbsp, RCR1) >> 5) & 0x7;
- mcbsp->tx_word_length = (MCBSP_READ(mcbsp, XCR1) >> 5) & 0x7;
+ mcbsp->rx_word_length = (MCBSP_READ_CACHE(mcbsp, RCR1) >> 5) & 0x7;
+ mcbsp->tx_word_length = (MCBSP_READ_CACHE(mcbsp, XCR1) >> 5) & 0x7;
- idle = !((MCBSP_READ(mcbsp, SPCR2) | MCBSP_READ(mcbsp, SPCR1)) & 1);
+ idle = !((MCBSP_READ_CACHE(mcbsp, SPCR2) |
+ MCBSP_READ_CACHE(mcbsp, SPCR1)) & 1);
if (idle) {
/* Start the sample generator */
- w = MCBSP_READ(mcbsp, SPCR2);
+ w = MCBSP_READ_CACHE(mcbsp, SPCR2);
MCBSP_WRITE(mcbsp, SPCR2, w | (1 << 6));
}
/* Enable transmitter and receiver */
tx &= 1;
- w = MCBSP_READ(mcbsp, SPCR2);
+ w = MCBSP_READ_CACHE(mcbsp, SPCR2);
MCBSP_WRITE(mcbsp, SPCR2, w | tx);
rx &= 1;
- w = MCBSP_READ(mcbsp, SPCR1);
+ w = MCBSP_READ_CACHE(mcbsp, SPCR1);
MCBSP_WRITE(mcbsp, SPCR1, w | rx);
/*
@@ -574,16 +577,16 @@ void omap_mcbsp_start(unsigned int id, int tx, int rx)
if (idle) {
/* Start frame sync */
- w = MCBSP_READ(mcbsp, SPCR2);
+ w = MCBSP_READ_CACHE(mcbsp, SPCR2);
MCBSP_WRITE(mcbsp, SPCR2, w | (1 << 7));
}
if (cpu_is_omap2430() || cpu_is_omap34xx()) {
/* Release the transmitter and receiver */
- w = MCBSP_READ(mcbsp, XCCR);
+ w = MCBSP_READ_CACHE(mcbsp, XCCR);
w &= ~(tx ? XDISABLE : 0);
MCBSP_WRITE(mcbsp, XCCR, w);
- w = MCBSP_READ(mcbsp, RCCR);
+ w = MCBSP_READ_CACHE(mcbsp, RCCR);
w &= ~(rx ? RDISABLE : 0);
MCBSP_WRITE(mcbsp, RCCR, w);
}
@@ -609,28 +612,29 @@ void omap_mcbsp_stop(unsigned int id, int tx, int rx)
/* Reset transmitter */
tx &= 1;
if (cpu_is_omap2430() || cpu_is_omap34xx()) {
- w = MCBSP_READ(mcbsp, XCCR);
+ w = MCBSP_READ_CACHE(mcbsp, XCCR);
w |= (tx ? XDISABLE : 0);
MCBSP_WRITE(mcbsp, XCCR, w);
}
- w = MCBSP_READ(mcbsp, SPCR2);
+ w = MCBSP_READ_CACHE(mcbsp, SPCR2);
MCBSP_WRITE(mcbsp, SPCR2, w & ~tx);
/* Reset receiver */
rx &= 1;
if (cpu_is_omap2430() || cpu_is_omap34xx()) {
- w = MCBSP_READ(mcbsp, RCCR);
+ w = MCBSP_READ_CACHE(mcbsp, RCCR);
w |= (rx ? RDISABLE : 0);
MCBSP_WRITE(mcbsp, RCCR, w);
}
- w = MCBSP_READ(mcbsp, SPCR1);
+ w = MCBSP_READ_CACHE(mcbsp, SPCR1);
MCBSP_WRITE(mcbsp, SPCR1, w & ~rx);
- idle = !((MCBSP_READ(mcbsp, SPCR2) | MCBSP_READ(mcbsp, SPCR1)) & 1);
+ idle = !((MCBSP_READ_CACHE(mcbsp, SPCR2) |
+ MCBSP_READ_CACHE(mcbsp, SPCR1)) & 1);
if (idle) {
/* Reset the sample rate generator */
- w = MCBSP_READ(mcbsp, SPCR2);
+ w = MCBSP_READ_CACHE(mcbsp, SPCR2);
MCBSP_WRITE(mcbsp, SPCR2, w & ~(1 << 6));
}
}
@@ -653,7 +657,7 @@ int omap_mcbsp_pollwrite(unsigned int id, u16 buf)
if (MCBSP_READ(mcbsp, SPCR2) & XSYNC_ERR) {
/* clear error */
MCBSP_WRITE(mcbsp, SPCR2,
- MCBSP_READ(mcbsp, SPCR2) & (~XSYNC_ERR));
+ MCBSP_READ_CACHE(mcbsp, SPCR2) & (~XSYNC_ERR));
/* resend */
return -1;
} else {
@@ -662,10 +666,12 @@ int omap_mcbsp_pollwrite(unsigned int id, u16 buf)
while (!(MCBSP_READ(mcbsp, SPCR2) & XRDY)) {
if (attemps++ > 1000) {
MCBSP_WRITE(mcbsp, SPCR2,
- MCBSP_READ(mcbsp, SPCR2) & (~XRST));
+ MCBSP_READ_CACHE(mcbsp, SPCR2) &
+ (~XRST));
udelay(10);
MCBSP_WRITE(mcbsp, SPCR2,
- MCBSP_READ(mcbsp, SPCR2) | (XRST));
+ MCBSP_READ_CACHE(mcbsp, SPCR2) |
+ (XRST));
udelay(10);
dev_err(mcbsp->dev, "Could not write to"
" McBSP%d Register\n", mcbsp->id);
@@ -692,7 +698,7 @@ int omap_mcbsp_pollread(unsigned int id, u16 *buf)
if (MCBSP_READ(mcbsp, SPCR1) & RSYNC_ERR) {
/* clear error */
MCBSP_WRITE(mcbsp, SPCR1,
- MCBSP_READ(mcbsp, SPCR1) & (~RSYNC_ERR));
+ MCBSP_READ_CACHE(mcbsp, SPCR1) & (~RSYNC_ERR));
/* resend */
return -1;
} else {
@@ -701,10 +707,12 @@ int omap_mcbsp_pollread(unsigned int id, u16 *buf)
while (!(MCBSP_READ(mcbsp, SPCR1) & RRDY)) {
if (attemps++ > 1000) {
MCBSP_WRITE(mcbsp, SPCR1,
- MCBSP_READ(mcbsp, SPCR1) & (~RRST));
+ MCBSP_READ_CACHE(mcbsp, SPCR1) &
+ (~RRST));
udelay(10);
MCBSP_WRITE(mcbsp, SPCR1,
- MCBSP_READ(mcbsp, SPCR1) | (RRST));
+ MCBSP_READ_CACHE(mcbsp, SPCR1) |
+ (RRST));
udelay(10);
dev_err(mcbsp->dev, "Could not read from"
" McBSP%d Register\n", mcbsp->id);
@@ -790,9 +798,11 @@ int omap_mcbsp_spi_master_xmit_word_poll(unsigned int id, u32 word)
spcr2 = MCBSP_READ(mcbsp, SPCR2);
if (attempts++ > 1000) {
/* We must reset the transmitter */
- MCBSP_WRITE(mcbsp, SPCR2, spcr2 & (~XRST));
+ MCBSP_WRITE(mcbsp, SPCR2,
+ MCBSP_READ_CACHE(mcbsp, SPCR2) & (~XRST));
udelay(10);
- MCBSP_WRITE(mcbsp, SPCR2, spcr2 | XRST);
+ MCBSP_WRITE(mcbsp, SPCR2,
+ MCBSP_READ_CACHE(mcbsp, SPCR2) | XRST);
udelay(10);
dev_err(mcbsp->dev, "McBSP%d transmitter not "
"ready\n", mcbsp->id);
@@ -811,9 +821,11 @@ int omap_mcbsp_spi_master_xmit_word_poll(unsigned int id, u32 word)
spcr1 = MCBSP_READ(mcbsp, SPCR1);
if (attempts++ > 1000) {
/* We must reset the receiver */
- MCBSP_WRITE(mcbsp, SPCR1, spcr1 & (~RRST));
+ MCBSP_WRITE(mcbsp, SPCR1,
+ MCBSP_READ_CACHE(mcbsp, SPCR1) & (~RRST));
udelay(10);
- MCBSP_WRITE(mcbsp, SPCR1, spcr1 | RRST);
+ MCBSP_WRITE(mcbsp, SPCR1,
+ MCBSP_READ_CACHE(mcbsp, SPCR1) | RRST);
udelay(10);
dev_err(mcbsp->dev, "McBSP%d receiver not "
"ready\n", mcbsp->id);
@@ -857,9 +869,11 @@ int omap_mcbsp_spi_master_recv_word_poll(unsigned int id, u32 *word)
spcr2 = MCBSP_READ(mcbsp, SPCR2);
if (attempts++ > 1000) {
/* We must reset the transmitter */
- MCBSP_WRITE(mcbsp, SPCR2, spcr2 & (~XRST));
+ MCBSP_WRITE(mcbsp, SPCR2,
+ MCBSP_READ_CACHE(mcbsp, SPCR2) & (~XRST));
udelay(10);
- MCBSP_WRITE(mcbsp, SPCR2, spcr2 | XRST);
+ MCBSP_WRITE(mcbsp, SPCR2,
+ MCBSP_READ_CACHE(mcbsp, SPCR2) | XRST);
udelay(10);
dev_err(mcbsp->dev, "McBSP%d transmitter not "
"ready\n", mcbsp->id);
@@ -878,9 +892,11 @@ int omap_mcbsp_spi_master_recv_word_poll(unsigned int id, u32 *word)
spcr1 = MCBSP_READ(mcbsp, SPCR1);
if (attempts++ > 1000) {
/* We must reset the receiver */
- MCBSP_WRITE(mcbsp, SPCR1, spcr1 & (~RRST));
+ MCBSP_WRITE(mcbsp, SPCR1,
+ MCBSP_READ_CACHE(mcbsp, SPCR1) & (~RRST));
udelay(10);
- MCBSP_WRITE(mcbsp, SPCR1, spcr1 | RRST);
+ MCBSP_WRITE(mcbsp, SPCR1,
+ MCBSP_READ_CACHE(mcbsp, SPCR1) | RRST);
udelay(10);
dev_err(mcbsp->dev, "McBSP%d receiver not "
"ready\n", mcbsp->id);
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-07-03 13:59:32 +0200