summaryrefslogtreecommitdiffstats
path: root/arch/arm/mach-pxa/ssp.c
diff options
context:
space:
mode:
Diffstat (limited to 'arch/arm/mach-pxa/ssp.c')
-rw-r--r--arch/arm/mach-pxa/ssp.c77
1 files changed, 49 insertions, 28 deletions
diff --git a/arch/arm/mach-pxa/ssp.c b/arch/arm/mach-pxa/ssp.c
index 0225ee0..b6d37fa 100644
--- a/arch/arm/mach-pxa/ssp.c
+++ b/arch/arm/mach-pxa/ssp.c
@@ -48,9 +48,11 @@
static irqreturn_t ssp_interrupt(int irq, void *dev_id)
{
struct ssp_dev *dev = (struct ssp_dev*) dev_id;
- unsigned int status = SSSR_P(dev->port);
+ struct ssp_device *ssp = dev->ssp;
+ unsigned int status;
- SSSR_P(dev->port) = status; /* clear status bits */
+ status = __raw_readl(ssp->mmio_base + SSSR);
+ __raw_writel(status, ssp->mmio_base + SSSR);
if (status & SSSR_ROR)
printk(KERN_WARNING "SSP(%d): receiver overrun\n", dev->port);
@@ -79,15 +81,16 @@ static irqreturn_t ssp_interrupt(int irq, void *dev_id)
*/
int ssp_write_word(struct ssp_dev *dev, u32 data)
{
+ struct ssp_device *ssp = dev->ssp;
int timeout = TIMEOUT;
- while (!(SSSR_P(dev->port) & SSSR_TNF)) {
+ while (!(__raw_readl(ssp->mmio_base + SSSR) & SSSR_TNF)) {
if (!--timeout)
return -ETIMEDOUT;
cpu_relax();
}
- SSDR_P(dev->port) = data;
+ __raw_writel(data, ssp->mmio_base + SSDR);
return 0;
}
@@ -109,15 +112,16 @@ int ssp_write_word(struct ssp_dev *dev, u32 data)
*/
int ssp_read_word(struct ssp_dev *dev, u32 *data)
{
+ struct ssp_device *ssp = dev->ssp;
int timeout = TIMEOUT;
- while (!(SSSR_P(dev->port) & SSSR_RNE)) {
+ while (!(__raw_readl(ssp->mmio_base + SSSR) & SSSR_RNE)) {
if (!--timeout)
return -ETIMEDOUT;
cpu_relax();
}
- *data = SSDR_P(dev->port);
+ *data = __raw_readl(ssp->mmio_base + SSDR);
return 0;
}
@@ -131,17 +135,18 @@ int ssp_read_word(struct ssp_dev *dev, u32 *data)
*/
int ssp_flush(struct ssp_dev *dev)
{
+ struct ssp_device *ssp = dev->ssp;
int timeout = TIMEOUT * 2;
do {
- while (SSSR_P(dev->port) & SSSR_RNE) {
+ while (__raw_readl(ssp->mmio_base + SSSR) & SSSR_RNE) {
if (!--timeout)
return -ETIMEDOUT;
- (void) SSDR_P(dev->port);
+ (void)__raw_readl(ssp->mmio_base + SSDR);
}
if (!--timeout)
return -ETIMEDOUT;
- } while (SSSR_P(dev->port) & SSSR_BSY);
+ } while (__raw_readl(ssp->mmio_base + SSSR) & SSSR_BSY);
return 0;
}
@@ -153,7 +158,12 @@ int ssp_flush(struct ssp_dev *dev)
*/
void ssp_enable(struct ssp_dev *dev)
{
- SSCR0_P(dev->port) |= SSCR0_SSE;
+ struct ssp_device *ssp = dev->ssp;
+ uint32_t sscr0;
+
+ sscr0 = __raw_readl(ssp->mmio_base + SSCR0);
+ sscr0 |= SSCR0_SSE;
+ __raw_writel(sscr0, ssp->mmio_base + SSCR0);
}
/**
@@ -163,7 +173,12 @@ void ssp_enable(struct ssp_dev *dev)
*/
void ssp_disable(struct ssp_dev *dev)
{
- SSCR0_P(dev->port) &= ~SSCR0_SSE;
+ struct ssp_device *ssp = dev->ssp;
+ uint32_t sscr0;
+
+ sscr0 = __raw_readl(ssp->mmio_base + SSCR0);
+ sscr0 &= ~SSCR0_SSE;
+ __raw_writel(sscr0, ssp->mmio_base + SSCR0);
}
/**
@@ -172,14 +187,16 @@ void ssp_disable(struct ssp_dev *dev)
*
* Save the configured SSP state for suspend.
*/
-void ssp_save_state(struct ssp_dev *dev, struct ssp_state *ssp)
+void ssp_save_state(struct ssp_dev *dev, struct ssp_state *state)
{
- ssp->cr0 = SSCR0_P(dev->port);
- ssp->cr1 = SSCR1_P(dev->port);
- ssp->to = SSTO_P(dev->port);
- ssp->psp = SSPSP_P(dev->port);
+ struct ssp_device *ssp = dev->ssp;
+
+ state->cr0 = __raw_readl(ssp->mmio_base + SSCR0);
+ state->cr1 = __raw_readl(ssp->mmio_base + SSCR1);
+ state->to = __raw_readl(ssp->mmio_base + SSTO);
+ state->psp = __raw_readl(ssp->mmio_base + SSPSP);
- SSCR0_P(dev->port) &= ~SSCR0_SSE;
+ ssp_disable(dev);
}
/**
@@ -188,16 +205,18 @@ void ssp_save_state(struct ssp_dev *dev, struct ssp_state *ssp)
*
* Restore the SSP configuration saved previously by ssp_save_state.
*/
-void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *ssp)
+void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *state)
{
- SSSR_P(dev->port) = SSSR_ROR | SSSR_TUR | SSSR_BCE;
+ struct ssp_device *ssp = dev->ssp;
+ uint32_t sssr = SSSR_ROR | SSSR_TUR | SSSR_BCE;
- SSCR0_P(dev->port) = ssp->cr0 & ~SSCR0_SSE;
- SSCR1_P(dev->port) = ssp->cr1;
- SSTO_P(dev->port) = ssp->to;
- SSPSP_P(dev->port) = ssp->psp;
+ __raw_writel(sssr, ssp->mmio_base + SSSR);
- SSCR0_P(dev->port) = ssp->cr0;
+ __raw_writel(state->cr0 & ~SSCR0_SSE, ssp->mmio_base + SSCR0);
+ __raw_writel(state->cr1, ssp->mmio_base + SSCR1);
+ __raw_writel(state->to, ssp->mmio_base + SSTO);
+ __raw_writel(state->psp, ssp->mmio_base + SSPSP);
+ __raw_writel(state->cr0, ssp->mmio_base + SSCR0);
}
/**
@@ -211,15 +230,17 @@ void ssp_restore_state(struct ssp_dev *dev, struct ssp_state *ssp)
*/
int ssp_config(struct ssp_dev *dev, u32 mode, u32 flags, u32 psp_flags, u32 speed)
{
+ struct ssp_device *ssp = dev->ssp;
+
dev->mode = mode;
dev->flags = flags;
dev->psp_flags = psp_flags;
dev->speed = speed;
/* set up port type, speed, port settings */
- SSCR0_P(dev->port) = (dev->speed | dev->mode);
- SSCR1_P(dev->port) = dev->flags;
- SSPSP_P(dev->port) = dev->psp_flags;
+ __raw_writel((dev->speed | dev->mode), ssp->mmio_base + SSCR0);
+ __raw_writel(dev->flags, ssp->mmio_base + SSCR1);
+ __raw_writel(dev->psp_flags, ssp->mmio_base + SSPSP);
return 0;
}
@@ -274,7 +295,7 @@ void ssp_exit(struct ssp_dev *dev)
{
struct ssp_device *ssp = dev->ssp;
- SSCR0_P(dev->port) &= ~SSCR0_SSE;
+ ssp_disable(dev);
free_irq(dev->irq, dev);
clk_disable(ssp->clk);
ssp_free(ssp);
OpenPOWER on IntegriCloud