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authorJarkko Nikula <jarkko.nikula@bitmer.com>2011-09-26 11:45:41 +0400
committerTony Lindgren <tony@atomide.com>2011-09-27 04:48:01 +0400
commit88408230d2fe752ffca0f292b092642cc5c153f1 (patch)
treee9c2dfed56b19a12e981d8884b950bf253cc1c46
parent1a6458847dd25e7ade3d633e5a374b836e38b9ae (diff)
downloadlinux-88408230d2fe752ffca0f292b092642cc5c153f1.tar.xz
ARM: OMAP: mcbsp: Make tranceiver configuration control register access generic
McBSP transmit and receive configuration control registers must be set up for OMAP2430 and later. Replace is_omap tests in generic code with a new feature flag has_ccr in platform data so that there is no need to change code for any upcoming OMAP version. Signed-off-by: Jarkko Nikula <jarkko.nikula@bitmer.com> Acked-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Tested-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl> Signed-off-by: Tony Lindgren <tony@atomide.com>
-rw-r--r--arch/arm/mach-omap2/mcbsp.c6
-rw-r--r--arch/arm/plat-omap/include/plat/mcbsp.h1
-rw-r--r--arch/arm/plat-omap/mcbsp.c8
3 files changed, 9 insertions, 6 deletions
diff --git a/arch/arm/mach-omap2/mcbsp.c b/arch/arm/mach-omap2/mcbsp.c
index de3457d750ff..d6cce00a730b 100644
--- a/arch/arm/mach-omap2/mcbsp.c
+++ b/arch/arm/mach-omap2/mcbsp.c
@@ -127,10 +127,12 @@ static int omap_init_mcbsp(struct omap_hwmod *oh, void *unused)
}
pdata->reg_step = 4;
- if (oh->class->rev < MCBSP_CONFIG_TYPE2)
+ if (oh->class->rev < MCBSP_CONFIG_TYPE2) {
pdata->reg_size = 2;
- else
+ } else {
pdata->reg_size = 4;
+ pdata->has_ccr = true;
+ }
if (oh->class->rev == MCBSP_CONFIG_TYPE3) {
if (id == 2)
diff --git a/arch/arm/plat-omap/include/plat/mcbsp.h b/arch/arm/plat-omap/include/plat/mcbsp.h
index ac48d836ab38..eed20ef869f9 100644
--- a/arch/arm/plat-omap/include/plat/mcbsp.h
+++ b/arch/arm/plat-omap/include/plat/mcbsp.h
@@ -320,6 +320,7 @@ struct omap_mcbsp_platform_data {
/* McBSP platform and instance specific features */
bool has_wakeup; /* Wakeup capability */
+ bool has_ccr; /* Transceiver has configuration control registers */
};
struct omap_mcbsp_st_data {
diff --git a/arch/arm/plat-omap/mcbsp.c b/arch/arm/plat-omap/mcbsp.c
index 0338ad07eb71..97bcbfac068a 100644
--- a/arch/arm/plat-omap/mcbsp.c
+++ b/arch/arm/plat-omap/mcbsp.c
@@ -184,7 +184,7 @@ void omap_mcbsp_config(unsigned int id, const struct omap_mcbsp_reg_cfg *config)
MCBSP_WRITE(mcbsp, MCR2, config->mcr2);
MCBSP_WRITE(mcbsp, MCR1, config->mcr1);
MCBSP_WRITE(mcbsp, PCR0, config->pcr0);
- if (cpu_is_omap2430() || cpu_is_omap34xx() || cpu_is_omap44xx()) {
+ if (mcbsp->pdata->has_ccr) {
MCBSP_WRITE(mcbsp, XCCR, config->xccr);
MCBSP_WRITE(mcbsp, RCCR, config->rccr);
}
@@ -848,7 +848,7 @@ void omap_mcbsp_start(unsigned int id, int tx, int rx)
MCBSP_WRITE(mcbsp, SPCR2, w | (1 << 7));
}
- if (cpu_is_omap2430() || cpu_is_omap34xx() || cpu_is_omap44xx()) {
+ if (mcbsp->pdata->has_ccr) {
/* Release the transmitter and receiver */
w = MCBSP_READ_CACHE(mcbsp, XCCR);
w &= ~(tx ? XDISABLE : 0);
@@ -878,7 +878,7 @@ void omap_mcbsp_stop(unsigned int id, int tx, int rx)
/* Reset transmitter */
tx &= 1;
- if (cpu_is_omap2430() || cpu_is_omap34xx() || cpu_is_omap44xx()) {
+ if (mcbsp->pdata->has_ccr) {
w = MCBSP_READ_CACHE(mcbsp, XCCR);
w |= (tx ? XDISABLE : 0);
MCBSP_WRITE(mcbsp, XCCR, w);
@@ -888,7 +888,7 @@ void omap_mcbsp_stop(unsigned int id, int tx, int rx)
/* Reset receiver */
rx &= 1;
- if (cpu_is_omap2430() || cpu_is_omap34xx() || cpu_is_omap44xx()) {
+ if (mcbsp->pdata->has_ccr) {
w = MCBSP_READ_CACHE(mcbsp, RCCR);
w |= (rx ? RDISABLE : 0);
MCBSP_WRITE(mcbsp, RCCR, w);