* Russell King - ARM Linux <linux@xxxxxxxxxxxxxxxx> [080614 11:05]:
> On Fri, Jun 06, 2008 at 06:30:37PM -0700, Tony Lindgren wrote:
> > Remove __REG access in DMA code, use dma_read/write instead:
> >
> > - dynamically set the omap_dma_base based on the omap type
> >
> > - omap_read/write becomes dma_read/write
> > - dma channel registers are read with dma_ch_read/write
> >
> > Cc: David Brownell <david-b@xxxxxxxxxxx>
> > Cc: linux-usb@xxxxxxxxxxxxxxx
> > Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
> >
> > diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
> > index 02f00a9..50f83bc 100644
> > --- a/arch/arm/plat-omap/dma.c
> > +++ b/arch/arm/plat-omap/dma.c
> > @@ -126,6 +126,7 @@ static int dma_chan_count;
> >
> > static spinlock_t dma_chan_lock;
> > static struct omap_dma_lch *dma_chan;
> > +void __iomem *omap_dma_base;
>
> Shouldn't this be static?
Good catch, yes it can be static. Updated patch following.
Tony
>From b4f08a601bfe343db59e7a2b59a4a40d367555dd Mon Sep 17 00:00:00 2001
From: Tony Lindgren <tony@xxxxxxxxxxx>
Date: Tue, 17 Jun 2008 10:22:30 +0300
Subject: [PATCH] ARM: OMAP: DMA: Remove __REG access
Remove __REG access in DMA code, use dma_read/write instead:
- dynamically set the omap_dma_base based on the omap type
- omap_read/write becomes dma_read/write
- dma channel registers are read with dma_ch_read/write
Cc: David Brownell <david-b@xxxxxxxxxxx>
Cc: linux-usb@xxxxxxxxxxxxxxx
Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
diff --git a/arch/arm/plat-omap/dma.c b/arch/arm/plat-omap/dma.c
index 02f00a9..18e757a 100644
--- a/arch/arm/plat-omap/dma.c
+++ b/arch/arm/plat-omap/dma.c
@@ -126,6 +126,7 @@ static int dma_chan_count;
static spinlock_t dma_chan_lock;
static struct omap_dma_lch *dma_chan;
+static void __iomem *omap_dma_base;
static const u8 omap1_dma_irq[OMAP1_LOGICAL_DMA_CH_COUNT] = {
INT_DMA_CH0_6, INT_DMA_CH1_7, INT_DMA_CH2_8, INT_DMA_CH3,
@@ -142,6 +143,24 @@ static inline void omap_enable_channel_irq(int lch);
#define REVISIT_24XX() printk(KERN_ERR "FIXME: no %s on 24xx\n", \
__func__);
+#define dma_read(reg) \
+({ \
+ u32 __val; \
+ if (cpu_class_is_omap1()) \
+ __val = __raw_readw(omap_dma_base + OMAP1_DMA_##reg); \
+ else \
+ __val = __raw_readl(omap_dma_base + OMAP_DMA4_##reg); \
+ __val; \
+})
+
+#define dma_write(val, reg) \
+({ \
+ if (cpu_class_is_omap1()) \
+ __raw_writew((u16)(val), omap_dma_base + OMAP1_DMA_##reg); \
+ else \
+ __raw_writel((val), omap_dma_base + OMAP_DMA4_##reg); \
+})
+
#ifdef CONFIG_ARCH_OMAP15XX
/* Returns 1 if the DMA module is in OMAP1510-compatible mode, 0 otherwise */
int omap_dma_in_1510_mode(void)
@@ -176,13 +195,14 @@ static inline void set_gdma_dev(int req, int dev)
#define set_gdma_dev(req, dev) do {} while (0)
#endif
+/* Omap1 only */
static void clear_lch_regs(int lch)
{
int i;
- u32 lch_base = OMAP_DMA_BASE + lch * 0x40;
+ void __iomem *lch_base = omap_dma_base + OMAP1_DMA_CH_BASE(lch);
for (i = 0; i < 0x2c; i += 2)
- omap_writew(0, lch_base + i);
+ __raw_writew(0, lch_base + i);
}
void omap_set_dma_priority(int lch, int dst_port, int priority)
@@ -215,10 +235,14 @@ void omap_set_dma_priority(int lch, int dst_port, int priority)
}
if (cpu_class_is_omap2()) {
+ u32 ccr;
+
+ ccr = dma_read(CCR(lch));
if (priority)
- OMAP_DMA_CCR_REG(lch) |= (1 << 6);
+ ccr |= (1 << 6);
else
- OMAP_DMA_CCR_REG(lch) &= ~(1 << 6);
+ ccr &= ~(1 << 6);
+ dma_write(ccr, CCR(lch));
}
}
@@ -226,22 +250,33 @@ void omap_set_dma_transfer_params(int lch, int data_type, int elem_count,
int frame_count, int sync_mode,
int dma_trigger, int src_or_dst_synch)
{
- OMAP_DMA_CSDP_REG(lch) &= ~0x03;
- OMAP_DMA_CSDP_REG(lch) |= data_type;
+ u32 l;
+
+ l = dma_read(CSDP(lch));
+ l &= ~0x03;
+ l |= data_type;
+ dma_write(l, CSDP(lch));
if (cpu_class_is_omap1()) {
- OMAP_DMA_CCR_REG(lch) &= ~(1 << 5);
+ u16 ccr;
+
+ ccr = dma_read(CCR(lch));
+ ccr &= ~(1 << 5);
if (sync_mode == OMAP_DMA_SYNC_FRAME)
- OMAP_DMA_CCR_REG(lch) |= 1 << 5;
+ ccr |= 1 << 5;
+ dma_write(ccr, CCR(lch));
- OMAP1_DMA_CCR2_REG(lch) &= ~(1 << 2);
+ ccr = dma_read(CCR2(lch));
+ ccr &= ~(1 << 2);
if (sync_mode == OMAP_DMA_SYNC_BLOCK)
- OMAP1_DMA_CCR2_REG(lch) |= 1 << 2;
+ ccr |= 1 << 2;
+ dma_write(ccr, CCR2(lch));
}
if (cpu_class_is_omap2() && dma_trigger) {
- u32 val = OMAP_DMA_CCR_REG(lch);
+ u32 val;
+ val = dma_read(CCR(lch));
val &= ~(3 << 19);
if (dma_trigger > 63)
val |= 1 << 20;
@@ -266,11 +301,11 @@ void omap_set_dma_transfer_params(int lch, int data_type, int elem_count,
else
val &= ~(1 << 24); /* dest synch */
- OMAP_DMA_CCR_REG(lch) = val;
+ dma_write(val, CCR(lch));
}
- OMAP_DMA_CEN_REG(lch) = elem_count;
- OMAP_DMA_CFN_REG(lch) = frame_count;
+ dma_write(elem_count, CEN(lch));
+ dma_write(frame_count, CFN(lch));
}
void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode, u32 color)
@@ -284,7 +319,9 @@ void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode, u32 color)
return;
}
- w = OMAP1_DMA_CCR2_REG(lch) & ~0x03;
+ w = dma_read(CCR2(lch));
+ w &= ~0x03;
+
switch (mode) {
case OMAP_DMA_CONSTANT_FILL:
w |= 0x01;
@@ -297,49 +334,81 @@ void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode, u32 color)
default:
BUG();
}
- OMAP1_DMA_CCR2_REG(lch) = w;
+ dma_write(w, CCR2(lch));
- w = OMAP1_DMA_LCH_CTRL_REG(lch) & ~0x0f;
+ w = dma_read(LCH_CTRL(lch));
+ w &= ~0x0f;
/* Default is channel type 2D */
if (mode) {
- OMAP1_DMA_COLOR_L_REG(lch) = (u16)color;
- OMAP1_DMA_COLOR_U_REG(lch) = (u16)(color >> 16);
+ dma_write((u16)color, COLOR_L(lch));
+ dma_write((u16)(color >> 16), COLOR_U(lch));
w |= 1; /* Channel type G */
}
- OMAP1_DMA_LCH_CTRL_REG(lch) = w;
+ dma_write(w, LCH_CTRL(lch));
}
void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode)
{
if (cpu_class_is_omap2()) {
- OMAP_DMA_CSDP_REG(lch) &= ~(0x3 << 16);
- OMAP_DMA_CSDP_REG(lch) |= (mode << 16);
+ u32 csdp;
+
+ csdp = dma_read(CSDP(lch));
+ csdp &= ~(0x3 << 16);
+ csdp |= (mode << 16);
+ dma_write(csdp, CSDP(lch));
}
}
+void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode)
+{
+ if (cpu_class_is_omap1() && !cpu_is_omap15xx()) {
+ u32 l;
+
+ l = dma_read(LCH_CTRL(lch));
+ l &= ~0x7;
+ l |= mode;
+ dma_write(l, LCH_CTRL(lch));
+ }
+}
+EXPORT_SYMBOL(omap_set_dma_channel_mode);
+
/* Note that src_port is only for omap1 */
void omap_set_dma_src_params(int lch, int src_port, int src_amode,
unsigned long src_start,
int src_ei, int src_fi)
{
if (cpu_class_is_omap1()) {
- OMAP_DMA_CSDP_REG(lch) &= ~(0x1f << 2);
- OMAP_DMA_CSDP_REG(lch) |= src_port << 2;
- }
+ u16 w;
- OMAP_DMA_CCR_REG(lch) &= ~(0x03 << 12);
- OMAP_DMA_CCR_REG(lch) |= src_amode << 12;
+ w = dma_read(CSDP(lch));
+ w &= ~(0x1f << 2);
+ w |= src_port << 2;
+ dma_write(w, CSDP(lch));
- if (cpu_class_is_omap1()) {
- OMAP1_DMA_CSSA_U_REG(lch) = src_start >> 16;
- OMAP1_DMA_CSSA_L_REG(lch) = src_start;
+ w = dma_read(CCR(lch));
+ w &= ~(0x03 << 12);
+ w |= src_amode << 12;
+ dma_write(w, CCR(lch));
+
+ dma_write(src_start >> 16, CSSA_U(lch));
+ dma_write((u16)src_start, CSSA_L(lch));
+
+ dma_write(src_ei, CSEI(lch));
+ dma_write(src_fi, CSFI(lch));
}
- if (cpu_class_is_omap2())
- OMAP2_DMA_CSSA_REG(lch) = src_start;
+ if (cpu_class_is_omap2()) {
+ u32 l;
+
+ l = dma_read(CCR(lch));
+ l &= ~(0x03 << 12);
+ l |= src_amode << 12;
+ dma_write(l, CCR(lch));
- OMAP_DMA_CSEI_REG(lch) = src_ei;
- OMAP_DMA_CSFI_REG(lch) = src_fi;
+ dma_write(src_start, CSSA(lch));
+ dma_write(src_ei, CSEI(lch));
+ dma_write(src_fi, CSFI(lch));
+ }
}
void omap_set_dma_params(int lch, struct omap_dma_channel_params * params)
@@ -366,21 +435,28 @@ void omap_set_dma_src_index(int lch, int eidx, int fidx)
REVISIT_24XX();
return;
}
- OMAP_DMA_CSEI_REG(lch) = eidx;
- OMAP_DMA_CSFI_REG(lch) = fidx;
+ dma_write(eidx, CSEI(lch));
+ dma_write(fidx, CSFI(lch));
}
void omap_set_dma_src_data_pack(int lch, int enable)
{
- OMAP_DMA_CSDP_REG(lch) &= ~(1 << 6);
+ u32 l;
+
+ l = dma_read(CSDP(lch));
+ l &= ~(1 << 6);
if (enable)
- OMAP_DMA_CSDP_REG(lch) |= (1 << 6);
+ l |= (1 << 6);
+ dma_write(l, CSDP(lch));
}
void omap_set_dma_src_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
{
unsigned int burst = 0;
- OMAP_DMA_CSDP_REG(lch) &= ~(0x03 << 7);
+ u32 l;
+
+ l = dma_read(CSDP(lch));
+ l &= ~(0x03 << 7);
switch (burst_mode) {
case OMAP_DMA_DATA_BURST_DIS:
@@ -411,7 +487,9 @@ void omap_set_dma_src_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
default:
BUG();
}
- OMAP_DMA_CSDP_REG(lch) |= (burst << 7);
+
+ l |= (burst << 7);
+ dma_write(l, CSDP(lch));
}
/* Note that dest_port is only for OMAP1 */
@@ -419,24 +497,30 @@ void omap_set_dma_dest_params(int lch, int dest_port, int dest_amode,
unsigned long dest_start,
int dst_ei, int dst_fi)
{
+ u32 l;
+
if (cpu_class_is_omap1()) {
- OMAP_DMA_CSDP_REG(lch) &= ~(0x1f << 9);
- OMAP_DMA_CSDP_REG(lch) |= dest_port << 9;
+ l = dma_read(CSDP(lch));
+ l &= ~(0x1f << 9);
+ l |= dest_port << 9;
+ dma_write(l, CSDP(lch));
}
- OMAP_DMA_CCR_REG(lch) &= ~(0x03 << 14);
- OMAP_DMA_CCR_REG(lch) |= dest_amode << 14;
+ l = dma_read(CCR(lch));
+ l &= ~(0x03 << 14);
+ l |= dest_amode << 14;
+ dma_write(l, CCR(lch));
if (cpu_class_is_omap1()) {
- OMAP1_DMA_CDSA_U_REG(lch) = dest_start >> 16;
- OMAP1_DMA_CDSA_L_REG(lch) = dest_start;
+ dma_write(dest_start >> 16, CDSA_U(lch));
+ dma_write(dest_start, CDSA_L(lch));
}
if (cpu_class_is_omap2())
- OMAP2_DMA_CDSA_REG(lch) = dest_start;
+ dma_write(dest_start, CDSA(lch));
- OMAP_DMA_CDEI_REG(lch) = dst_ei;
- OMAP_DMA_CDFI_REG(lch) = dst_fi;
+ dma_write(dst_ei, CDEI(lch));
+ dma_write(dst_fi, CDFI(lch));
}
void omap_set_dma_dest_index(int lch, int eidx, int fidx)
@@ -445,21 +529,28 @@ void omap_set_dma_dest_index(int lch, int eidx, int fidx)
REVISIT_24XX();
return;
}
- OMAP_DMA_CDEI_REG(lch) = eidx;
- OMAP_DMA_CDFI_REG(lch) = fidx;
+ dma_write(eidx, CDEI(lch));
+ dma_write(fidx, CDFI(lch));
}
void omap_set_dma_dest_data_pack(int lch, int enable)
{
- OMAP_DMA_CSDP_REG(lch) &= ~(1 << 13);
+ u32 l;
+
+ l = dma_read(CSDP(lch));
+ l &= ~(1 << 13);
if (enable)
- OMAP_DMA_CSDP_REG(lch) |= 1 << 13;
+ l |= 1 << 13;
+ dma_write(l, CSDP(lch));
}
void omap_set_dma_dest_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
{
unsigned int burst = 0;
- OMAP_DMA_CSDP_REG(lch) &= ~(0x03 << 14);
+ u32 l;
+
+ l = dma_read(CSDP(lch));
+ l &= ~(0x03 << 14);
switch (burst_mode) {
case OMAP_DMA_DATA_BURST_DIS:
@@ -489,7 +580,8 @@ void omap_set_dma_dest_burst_mode(int lch, enum omap_dma_burst_mode burst_mode)
BUG();
return;
}
- OMAP_DMA_CSDP_REG(lch) |= (burst << 14);
+ l |= (burst << 14);
+ dma_write(l, CSDP(lch));
}
static inline void omap_enable_channel_irq(int lch)
@@ -498,18 +590,18 @@ static inline void omap_enable_channel_irq(int lch)
/* Clear CSR */
if (cpu_class_is_omap1())
- status = OMAP_DMA_CSR_REG(lch);
+ status = dma_read(CSR(lch));
else if (cpu_class_is_omap2())
- OMAP_DMA_CSR_REG(lch) = OMAP2_DMA_CSR_CLEAR_MASK;
+ dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR(lch));
/* Enable some nice interrupts. */
- OMAP_DMA_CICR_REG(lch) = dma_chan[lch].enabled_irqs;
+ dma_write(dma_chan[lch].enabled_irqs, CICR(lch));
}
static void omap_disable_channel_irq(int lch)
{
if (cpu_class_is_omap2())
- OMAP_DMA_CICR_REG(lch) = 0;
+ dma_write(0, CICR(lch));
}
void omap_enable_dma_irq(int lch, u16 bits)
@@ -524,36 +616,45 @@ void omap_disable_dma_irq(int lch, u16 bits)
static inline void enable_lnk(int lch)
{
+ u32 l;
+
+ l = dma_read(CLNK_CTRL(lch));
+
if (cpu_class_is_omap1())
- OMAP_DMA_CLNK_CTRL_REG(lch) &= ~(1 << 14);
+ l &= ~(1 << 14);
/* Set the ENABLE_LNK bits */
if (dma_chan[lch].next_lch != -1)
- OMAP_DMA_CLNK_CTRL_REG(lch) =
- dma_chan[lch].next_lch | (1 << 15);
+ l = dma_chan[lch].next_lch | (1 << 15);
#ifndef CONFIG_ARCH_OMAP1
if (dma_chan[lch].next_linked_ch != -1)
- OMAP_DMA_CLNK_CTRL_REG(lch) =
- dma_chan[lch].next_linked_ch | (1 << 15);
+ l = dma_chan[lch].next_linked_ch | (1 << 15);
#endif
+
+ dma_write(l, CLNK_CTRL(lch));
}
static inline void disable_lnk(int lch)
{
+ u32 l;
+
+ l = dma_read(CLNK_CTRL(lch));
+
/* Disable interrupts */
if (cpu_class_is_omap1()) {
- OMAP_DMA_CICR_REG(lch) = 0;
+ dma_write(0, CICR(lch));
/* Set the STOP_LNK bit */
- OMAP_DMA_CLNK_CTRL_REG(lch) |= 1 << 14;
+ l |= 1 << 14;
}
if (cpu_class_is_omap2()) {
omap_disable_channel_irq(lch);
/* Clear the ENABLE_LNK bit */
- OMAP_DMA_CLNK_CTRL_REG(lch) &= ~(1 << 15);
+ l &= ~(1 << 15);
}
+ dma_write(l, CLNK_CTRL(lch));
dma_chan[lch].flags &= ~OMAP_DMA_ACTIVE;
}
@@ -564,9 +665,9 @@ static inline void omap2_enable_irq_lch(int lch)
if (!cpu_class_is_omap2())
return;
- val = omap_readl(OMAP_DMA4_IRQENABLE_L0);
+ val = dma_read(IRQENABLE_L0);
val |= 1 << lch;
- omap_writel(val, OMAP_DMA4_IRQENABLE_L0);
+ dma_write(val, IRQENABLE_L0);
}
int omap_request_dma(int dev_id, const char *dev_name,
@@ -623,9 +724,9 @@ int omap_request_dma(int dev_id, const char *dev_name,
}
/* Disable the 1510 compatibility mode and set the sync device
* id. */
- OMAP_DMA_CCR_REG(free_ch) = dev_id | (1 << 10);
+ dma_write(dev_id | (1 << 10), CCR(free_ch));
} else if (cpu_is_omap730() || cpu_is_omap15xx()) {
- OMAP_DMA_CCR_REG(free_ch) = dev_id;
+ dma_write(dev_id, CCR(free_ch));
}
if (cpu_class_is_omap2()) {
@@ -633,8 +734,8 @@ int omap_request_dma(int dev_id, const char *dev_name,
omap_enable_channel_irq(free_ch);
/* Clear the CSR register and IRQ status register */
- OMAP_DMA_CSR_REG(free_ch) = OMAP2_DMA_CSR_CLEAR_MASK;
- omap_writel(1 << free_ch, OMAP_DMA4_IRQSTATUS_L0);
+ dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR(free_ch));
+ dma_write(1 << free_ch, IRQSTATUS_L0);
}
*dma_ch_out = free_ch;
@@ -660,27 +761,27 @@ void omap_free_dma(int lch)
if (cpu_class_is_omap1()) {
/* Disable all DMA interrupts for the channel. */
- OMAP_DMA_CICR_REG(lch) = 0;
+ dma_write(0, CICR(lch));
/* Make sure the DMA transfer is stopped. */
- OMAP_DMA_CCR_REG(lch) = 0;
+ dma_write(0, CCR(lch));
}
if (cpu_class_is_omap2()) {
u32 val;
/* Disable interrupts */
- val = omap_readl(OMAP_DMA4_IRQENABLE_L0);
+ val = dma_read(IRQENABLE_L0);
val &= ~(1 << lch);
- omap_writel(val, OMAP_DMA4_IRQENABLE_L0);
+ dma_write(val, IRQENABLE_L0);
/* Clear the CSR register and IRQ status register */
- OMAP_DMA_CSR_REG(lch) = OMAP2_DMA_CSR_CLEAR_MASK;
- omap_writel(1 << lch, OMAP_DMA4_IRQSTATUS_L0);
+ dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR(lch));
+ dma_write(1 << lch, IRQSTATUS_L0);
/* Disable all DMA interrupts for the channel. */
- OMAP_DMA_CICR_REG(lch) = 0;
+ dma_write(0, CICR(lch));
/* Make sure the DMA transfer is stopped. */
- OMAP_DMA_CCR_REG(lch) = 0;
+ dma_write(0, CCR(lch));
omap_clear_dma(lch);
}
}
@@ -711,7 +812,7 @@ omap_dma_set_global_params(int arb_rate, int max_fifo_depth, int tparams)
reg = (arb_rate & 0xff) << 16;
reg |= (0xff & max_fifo_depth);
- omap_writel(reg, OMAP_DMA4_GCR_REG);
+ dma_write(reg, GCR);
}
EXPORT_SYMBOL(omap_dma_set_global_params);
@@ -728,20 +829,21 @@ int
omap_dma_set_prio_lch(int lch, unsigned char read_prio,
unsigned char write_prio)
{
- u32 w;
+ u32 l;
if (unlikely((lch < 0 || lch >= dma_lch_count))) {
printk(KERN_ERR "Invalid channel id\n");
return -EINVAL;
}
- w = OMAP_DMA_CCR_REG(lch);
- w &= ~((1 << 6) | (1 << 26));
+ l = dma_read(CCR(lch));
+ l &= ~((1 << 6) | (1 << 26));
if (cpu_is_omap2430() || cpu_is_omap34xx())
- w |= ((read_prio & 0x1) << 6) | ((write_prio & 0x1) << 26);
+ l |= ((read_prio & 0x1) << 6) | ((write_prio & 0x1) << 26);
else
- w |= ((read_prio & 0x1) << 6);
+ l |= ((read_prio & 0x1) << 6);
+
+ dma_write(l, CCR(lch));
- OMAP_DMA_CCR_REG(lch) = w;
return 0;
}
EXPORT_SYMBOL(omap_dma_set_prio_lch);
@@ -757,18 +859,21 @@ void omap_clear_dma(int lch)
local_irq_save(flags);
if (cpu_class_is_omap1()) {
- int status;
- OMAP_DMA_CCR_REG(lch) &= ~OMAP_DMA_CCR_EN;
+ u32 l;
+
+ l = dma_read(CCR(lch));
+ l &= ~OMAP_DMA_CCR_EN;
+ dma_write(l, CCR(lch));
/* Clear pending interrupts */
- status = OMAP_DMA_CSR_REG(lch);
+ l = dma_read(CSR(lch));
}
if (cpu_class_is_omap2()) {
int i;
- u32 lch_base = OMAP_DMA4_BASE + lch * 0x60 + 0x80;
+ void __iomem *lch_base = omap_dma_base + OMAP_DMA4_CH_BASE(lch);
for (i = 0; i < 0x44; i += 4)
- omap_writel(0, lch_base + i);
+ __raw_writel(0, lch_base + i);
}
local_irq_restore(flags);
@@ -776,6 +881,8 @@ void omap_clear_dma(int lch)
void omap_start_dma(int lch)
{
+ u32 l;
+
if (!omap_dma_in_1510_mode() && dma_chan[lch].next_lch != -1) {
int next_lch, cur_lch;
char dma_chan_link_map[OMAP_DMA4_LOGICAL_DMA_CH_COUNT];
@@ -802,24 +909,28 @@ void omap_start_dma(int lch)
} while (next_lch != -1);
} else if (cpu_class_is_omap2()) {
/* Errata: Need to write lch even if not using chaining */
- OMAP_DMA_CLNK_CTRL_REG(lch) = lch;
+ dma_write(lch, CLNK_CTRL(lch));
}
omap_enable_channel_irq(lch);
+ l = dma_read(CCR(lch));
+
/* Errata: On ES2.0 BUFFERING disable must be set.
* This will always fail on ES1.0 */
- if (cpu_is_omap24xx()) {
- OMAP_DMA_CCR_REG(lch) |= OMAP_DMA_CCR_EN;
- }
+ if (cpu_is_omap24xx())
+ l |= OMAP_DMA_CCR_EN;
- OMAP_DMA_CCR_REG(lch) |= OMAP_DMA_CCR_EN;
+ l |= OMAP_DMA_CCR_EN;
+ dma_write(l, CCR(lch));
dma_chan[lch].flags |= OMAP_DMA_ACTIVE;
}
void omap_stop_dma(int lch)
{
+ u32 l;
+
if (!omap_dma_in_1510_mode() && dma_chan[lch].next_lch != -1) {
int next_lch, cur_lch = lch;
char dma_chan_link_map[OMAP_DMA4_LOGICAL_DMA_CH_COUNT];
@@ -843,9 +954,12 @@ void omap_stop_dma(int lch)
/* Disable all interrupts on the channel */
if (cpu_class_is_omap1())
- OMAP_DMA_CICR_REG(lch) = 0;
+ dma_write(0, CICR(lch));
+
+ l = dma_read(CCR(lch));
+ l &= ~OMAP_DMA_CCR_EN;
+ dma_write(l, CCR(lch));
- OMAP_DMA_CCR_REG(lch) &= ~OMAP_DMA_CCR_EN;
dma_chan[lch].flags &= ~OMAP_DMA_ACTIVE;
}
@@ -887,12 +1001,20 @@ dma_addr_t omap_get_dma_src_pos(int lch)
{
dma_addr_t offset = 0;
- if (cpu_class_is_omap1())
- offset = (dma_addr_t) (OMAP1_DMA_CSSA_L_REG(lch) |
- (OMAP1_DMA_CSSA_U_REG(lch) << 16));
+ if (cpu_is_omap15xx())
+ offset = dma_read(CPC(lch));
+ else
+ offset = dma_read(CSAC(lch));
- if (cpu_class_is_omap2())
- offset = OMAP_DMA_CSAC_REG(lch);
+ /*
+ * omap 3.2/3.3 erratum: sometimes 0 is returned if CSAC/CDAC is
+ * read before the DMA controller finished disabling the channel.
+ */
+ if (!cpu_is_omap15xx() && offset == 0)
+ offset = dma_read(CSAC(lch));
+
+ if (cpu_class_is_omap1())
+ offset |= (dma_read(CSSA_U(lch)) << 16);
return offset;
}
@@ -909,12 +1031,20 @@ dma_addr_t omap_get_dma_dst_pos(int lch)
{
dma_addr_t offset = 0;
- if (cpu_class_is_omap1())
- offset = (dma_addr_t) (OMAP1_DMA_CDSA_L_REG(lch) |
- (OMAP1_DMA_CDSA_U_REG(lch) << 16));
+ if (cpu_is_omap15xx())
+ offset = dma_read(CPC(lch));
+ else
+ offset = dma_read(CDAC(lch));
- if (cpu_class_is_omap2())
- offset = OMAP_DMA_CDAC_REG(lch);
+ /*
+ * omap 3.2/3.3 erratum: sometimes 0 is returned if CSAC/CDAC is
+ * read before the DMA controller finished disabling the channel.
+ */
+ if (!cpu_is_omap15xx() && offset == 0)
+ offset = dma_read(CDAC(lch));
+
+ if (cpu_class_is_omap1())
+ offset |= (dma_read(CDSA_U(lch)) << 16);
return offset;
}
@@ -926,8 +1056,14 @@ dma_addr_t omap_get_dma_dst_pos(int lch)
*/
int omap_get_dma_src_addr_counter(int lch)
{
- return (dma_addr_t) OMAP_DMA_CSAC_REG(lch);
+ return (dma_addr_t)dma_read(CSAC(lch));
+}
+
+int omap_get_dma_active_status(int lch)
+{
+ return (dma_read(CCR(lch)) & OMAP_DMA_CCR_EN) != 0;
}
+EXPORT_SYMBOL(omap_get_dma_active_status);
int omap_dma_running(void)
{
@@ -939,7 +1075,7 @@ int omap_dma_running(void)
return 1;
for (lch = 0; lch < dma_chan_count; lch++)
- if (OMAP_DMA_CCR_REG(lch) & OMAP_DMA_CCR_EN)
+ if (dma_read(CCR(lch)) & OMAP_DMA_CCR_EN)
return 1;
return 0;
@@ -1001,7 +1137,7 @@ void omap_dma_unlink_lch (int lch_head, int lch_queue)
/* Create chain of DMA channesls */
static void create_dma_lch_chain(int lch_head, int lch_queue)
{
- u32 w;
+ u32 l;
/* Check if this is the first link in chain */
if (dma_chan[lch_head].next_linked_ch == -1) {
@@ -1021,15 +1157,15 @@ static void create_dma_lch_chain(int lch_head, int lch_queue)
lch_queue;
}
- w = OMAP_DMA_CLNK_CTRL_REG(lch_head);
- w &= ~(0x1f);
- w |= lch_queue;
- OMAP_DMA_CLNK_CTRL_REG(lch_head) = w;
+ l = dma_read(CLNK_CTRL(lch_head));
+ l &= ~(0x1f);
+ l |= lch_queue;
+ dma_write(l, CLNK_CTRL(lch_head));
- w = OMAP_DMA_CLNK_CTRL_REG(lch_queue);
- w &= ~(0x1f);
- w |= (dma_chan[lch_queue].next_linked_ch);
- OMAP_DMA_CLNK_CTRL_REG(lch_queue) = w;
+ l = dma_read(CLNK_CTRL(lch_queue));
+ l &= ~(0x1f);
+ l |= (dma_chan[lch_queue].next_linked_ch);
+ dma_write(l, CLNK_CTRL(lch_queue));
}
/**
@@ -1256,7 +1392,7 @@ int omap_dma_chain_a_transfer(int chain_id, int src_start, int dest_start,
int elem_count, int frame_count, void *callbk_data)
{
int *channels;
- u32 w, lch;
+ u32 l, lch;
int start_dma = 0;
/* if buffer size is less than 1 then there is
@@ -1297,13 +1433,13 @@ int omap_dma_chain_a_transfer(int chain_id, int src_start, int dest_start,
/* Set the params to the free channel */
if (src_start != 0)
- OMAP2_DMA_CSSA_REG(lch) = src_start;
+ dma_write(src_start, CSSA(lch));
if (dest_start != 0)
- OMAP2_DMA_CDSA_REG(lch) = dest_start;
+ dma_write(dest_start, CDSA(lch));
/* Write the buffer size */
- OMAP_DMA_CEN_REG(lch) = elem_count;
- OMAP_DMA_CFN_REG(lch) = frame_count;
+ dma_write(elem_count, CEN(lch));
+ dma_write(frame_count, CFN(lch));
/* If the chain is dynamically linked,
* then we may have to start the chain if its not active */
@@ -1330,8 +1466,8 @@ int omap_dma_chain_a_transfer(int chain_id, int src_start, int dest_start,
enable_lnk(dma_chan[lch].prev_linked_ch);
dma_chan[lch].state = DMA_CH_QUEUED;
start_dma = 0;
- if (0 == ((1 << 7) & (OMAP_DMA_CCR_REG
- (dma_chan[lch].prev_linked_ch)))) {
+ if (0 == ((1 << 7) & dma_read(
+ CCR(dma_chan[lch].prev_linked_ch)))) {
disable_lnk(dma_chan[lch].
prev_linked_ch);
pr_debug("\n prev ch is stopped\n");
@@ -1347,23 +1483,23 @@ int omap_dma_chain_a_transfer(int chain_id, int src_start, int dest_start,
}
omap_enable_channel_irq(lch);
- w = OMAP_DMA_CCR_REG(lch);
+ l = dma_read(CCR(lch));
- if ((0 == (w & (1 << 24))))
- w &= ~(1 << 25);
+ if ((0 == (l & (1 << 24))))
+ l &= ~(1 << 25);
else
- w |= (1 << 25);
+ l |= (1 << 25);
if (start_dma == 1) {
- if (0 == (w & (1 << 7))) {
- w |= (1 << 7);
+ if (0 == (l & (1 << 7))) {
+ l |= (1 << 7);
dma_chan[lch].state = DMA_CH_STARTED;
pr_debug("starting %d\n", lch);
- OMAP_DMA_CCR_REG(lch) = w;
+ dma_write(l, CCR(lch));
} else
start_dma = 0;
} else {
- if (0 == (w & (1 << 7)))
- OMAP_DMA_CCR_REG(lch) = w;
+ if (0 == (l & (1 << 7)))
+ dma_write(l, CCR(lch));
}
dma_chan[lch].flags |= OMAP_DMA_ACTIVE;
}
@@ -1383,7 +1519,7 @@ EXPORT_SYMBOL(omap_dma_chain_a_transfer);
int omap_start_dma_chain_transfers(int chain_id)
{
int *channels;
- u32 w, i;
+ u32 l, i;
if (unlikely((chain_id < 0 || chain_id >= dma_lch_count))) {
printk(KERN_ERR "Invalid chain id\n");
@@ -1407,16 +1543,16 @@ int omap_start_dma_chain_transfers(int chain_id)
omap_enable_channel_irq(channels[0]);
}
- w = OMAP_DMA_CCR_REG(channels[0]);
- w |= (1 << 7);
+ l = dma_read(CCR(channels[0]));
+ l |= (1 << 7);
dma_linked_lch[chain_id].chain_state = DMA_CHAIN_STARTED;
dma_chan[channels[0]].state = DMA_CH_STARTED;
- if ((0 == (w & (1 << 24))))
- w &= ~(1 << 25);
+ if ((0 == (l & (1 << 24))))
+ l &= ~(1 << 25);
else
- w |= (1 << 25);
- OMAP_DMA_CCR_REG(channels[0]) = w;
+ l |= (1 << 25);
+ dma_write(l, CCR(channels[0]));
dma_chan[channels[0]].flags |= OMAP_DMA_ACTIVE;
return 0;
@@ -1434,7 +1570,7 @@ EXPORT_SYMBOL(omap_start_dma_chain_transfers);
int omap_stop_dma_chain_transfers(int chain_id)
{
int *channels;
- u32 w, i;
+ u32 l, i;
u32 sys_cf;
/* Check for input params */
@@ -1453,18 +1589,18 @@ int omap_stop_dma_chain_transfers(int chain_id)
/* DMA Errata:
* Special programming model needed to disable DMA before end of block
*/
- sys_cf = omap_readl(OMAP_DMA4_OCP_SYSCONFIG);
- w = sys_cf;
+ sys_cf = dma_read(OCP_SYSCONFIG);
+ l = sys_cf;
/* Middle mode reg set no Standby */
- w &= ~((1 << 12)|(1 << 13));
- omap_writel(w, OMAP_DMA4_OCP_SYSCONFIG);
+ l &= ~((1 << 12)|(1 << 13));
+ dma_write(l, OCP_SYSCONFIG);
for (i = 0; i < dma_linked_lch[chain_id].no_of_lchs_linked; i++) {
/* Stop the Channel transmission */
- w = OMAP_DMA_CCR_REG(channels[i]);
- w &= ~(1 << 7);
- OMAP_DMA_CCR_REG(channels[i]) = w;
+ l = dma_read(CCR(channels[i]));
+ l &= ~(1 << 7);
+ dma_write(l, CCR(channels[i]));
/* Disable the link in all the channels */
disable_lnk(channels[i]);
@@ -1477,7 +1613,7 @@ int omap_stop_dma_chain_transfers(int chain_id)
OMAP_DMA_CHAIN_QINIT(chain_id);
/* Errata - put in the old value */
- omap_writel(sys_cf, OMAP_DMA4_OCP_SYSCONFIG);
+ dma_write(sys_cf, OCP_SYSCONFIG);
return 0;
}
EXPORT_SYMBOL(omap_stop_dma_chain_transfers);
@@ -1518,8 +1654,8 @@ int omap_get_dma_chain_index(int chain_id, int *ei, int *fi)
/* Get the current channel */
lch = channels[dma_linked_lch[chain_id].q_head];
- *ei = OMAP2_DMA_CCEN_REG(lch);
- *fi = OMAP2_DMA_CCFN_REG(lch);
+ *ei = dma_read(CCEN(lch));
+ *fi = dma_read(CCFN(lch));
return 0;
}
@@ -1556,7 +1692,7 @@ int omap_get_dma_chain_dst_pos(int chain_id)
/* Get the current channel */
lch = channels[dma_linked_lch[chain_id].q_head];
- return (OMAP_DMA_CDAC_REG(lch));
+ return dma_read(CDAC(lch));
}
EXPORT_SYMBOL(omap_get_dma_chain_dst_pos);
@@ -1590,7 +1726,7 @@ int omap_get_dma_chain_src_pos(int chain_id)
/* Get the current channel */
lch = channels[dma_linked_lch[chain_id].q_head];
- return (OMAP_DMA_CSAC_REG(lch));
+ return dma_read(CSAC(lch));
}
EXPORT_SYMBOL(omap_get_dma_chain_src_pos);
#endif
@@ -1601,13 +1737,13 @@ EXPORT_SYMBOL(omap_get_dma_chain_src_pos);
static int omap1_dma_handle_ch(int ch)
{
- u16 csr;
+ u32 csr;
if (enable_1510_mode && ch >= 6) {
csr = dma_chan[ch].saved_csr;
dma_chan[ch].saved_csr = 0;
} else
- csr = OMAP_DMA_CSR_REG(ch);
+ csr = dma_read(CSR(ch));
if (enable_1510_mode && ch <= 2 && (csr >> 7) != 0) {
dma_chan[ch + 6].saved_csr = csr >> 7;
csr &= 0x7f;
@@ -1659,12 +1795,12 @@ static irqreturn_t omap1_dma_irq_handler(int irq, void *dev_id)
static int omap2_dma_handle_ch(int ch)
{
- u32 status = OMAP_DMA_CSR_REG(ch);
+ u32 status = dma_read(CSR(ch));
if (!status) {
if (printk_ratelimit())
printk(KERN_WARNING "Spurious DMA IRQ for lch %d\n", ch);
- omap_writel(1 << ch, OMAP_DMA4_IRQSTATUS_L0);
+ dma_write(1 << ch, IRQSTATUS_L0);
return 0;
}
if (unlikely(dma_chan[ch].dev_id == -1)) {
@@ -1687,14 +1823,14 @@ static int omap2_dma_handle_ch(int ch)
printk(KERN_INFO "DMA misaligned error with device %d\n",
dma_chan[ch].dev_id);
- OMAP_DMA_CSR_REG(ch) = OMAP2_DMA_CSR_CLEAR_MASK;
- omap_writel(1 << ch, OMAP_DMA4_IRQSTATUS_L0);
+ dma_write(OMAP2_DMA_CSR_CLEAR_MASK, CSR(ch));
+ dma_write(1 << ch, IRQSTATUS_L0);
/* If the ch is not chained then chain_id will be -1 */
if (dma_chan[ch].chain_id != -1) {
int chain_id = dma_chan[ch].chain_id;
dma_chan[ch].state = DMA_CH_NOTSTARTED;
- if (OMAP_DMA_CLNK_CTRL_REG(ch) & (1 << 15))
+ if (dma_read(CLNK_CTRL(ch)) & (1 << 15))
dma_chan[dma_chan[ch].next_linked_ch].state =
DMA_CH_STARTED;
if (dma_linked_lch[chain_id].chain_mode ==
@@ -1704,13 +1840,13 @@ static int omap2_dma_handle_ch(int ch)
if (!OMAP_DMA_CHAIN_QEMPTY(chain_id))
OMAP_DMA_CHAIN_INCQHEAD(chain_id);
- status = OMAP_DMA_CSR_REG(ch);
+ status = dma_read(CSR(ch));
}
if (likely(dma_chan[ch].callback != NULL))
dma_chan[ch].callback(ch, status, dma_chan[ch].data);
- OMAP_DMA_CSR_REG(ch) = status;
+ dma_write(status, CSR(ch));
return 0;
}
@@ -1721,7 +1857,7 @@ static irqreturn_t omap2_dma_irq_handler(int irq, void *dev_id)
u32 val;
int i;
- val = omap_readl(OMAP_DMA4_IRQSTATUS_L0);
+ val = dma_read(IRQSTATUS_L0);
if (val == 0) {
if (printk_ratelimit())
printk(KERN_WARNING "Spurious DMA IRQ\n");
@@ -2109,10 +2245,19 @@ static int __init omap_init_dma(void)
{
int ch, r;
- if (cpu_class_is_omap1())
+ if (cpu_class_is_omap1()) {
+ omap_dma_base = (void __iomem *)IO_ADDRESS(OMAP1_DMA_BASE);
dma_lch_count = OMAP1_LOGICAL_DMA_CH_COUNT;
- else
+ } else if (cpu_is_omap24xx()) {
+ omap_dma_base = (void __iomem *)IO_ADDRESS(OMAP24XX_DMA4_BASE);
dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT;
+ } else if (cpu_is_omap34xx()) {
+ omap_dma_base = (void __iomem *)IO_ADDRESS(OMAP34XX_DMA4_BASE);
+ dma_lch_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT;
+ } else {
+ pr_err("DMA init failed for unsupported omap\n");
+ return -ENODEV;
+ }
dma_chan = kzalloc(sizeof(struct omap_dma_lch) * dma_lch_count,
GFP_KERNEL);
@@ -2134,21 +2279,21 @@ static int __init omap_init_dma(void)
enable_1510_mode = 1;
} else if (cpu_is_omap16xx() || cpu_is_omap730()) {
printk(KERN_INFO "OMAP DMA hardware version %d\n",
- omap_readw(OMAP_DMA_HW_ID));
+ dma_read(HW_ID));
printk(KERN_INFO "DMA capabilities: %08x:%08x:%04x:%04x:%04x\n",
- (omap_readw(OMAP_DMA_CAPS_0_U) << 16) |
- omap_readw(OMAP_DMA_CAPS_0_L),
- (omap_readw(OMAP_DMA_CAPS_1_U) << 16) |
- omap_readw(OMAP_DMA_CAPS_1_L),
- omap_readw(OMAP_DMA_CAPS_2), omap_readw(OMAP_DMA_CAPS_3),
- omap_readw(OMAP_DMA_CAPS_4));
+ (dma_read(CAPS_0_U) << 16) |
+ dma_read(CAPS_0_L),
+ (dma_read(CAPS_1_U) << 16) |
+ dma_read(CAPS_1_L),
+ dma_read(CAPS_2), dma_read(CAPS_3),
+ dma_read(CAPS_4));
if (!enable_1510_mode) {
u16 w;
/* Disable OMAP 3.0/3.1 compatibility mode. */
- w = omap_readw(OMAP_DMA_GSCR);
+ w = dma_read(GSCR);
w |= 1 << 3;
- omap_writew(w, OMAP_DMA_GSCR);
+ dma_write(w, GSCR);
dma_chan_count = 16;
} else
dma_chan_count = 9;
@@ -2161,7 +2306,7 @@ static int __init omap_init_dma(void)
omap_writew(w, OMAP1610_DMA_LCD_CTRL);
}
} else if (cpu_class_is_omap2()) {
- u8 revision = omap_readb(OMAP_DMA4_REVISION);
+ u8 revision = dma_read(REVISION) & 0xff;
printk(KERN_INFO "OMAP DMA hardware revision %d.%d\n",
revision >> 4, revision & 0xf);
dma_chan_count = OMAP_DMA4_LOGICAL_DMA_CH_COUNT;
diff --git a/drivers/usb/gadget/omap_udc.c b/drivers/usb/gadget/omap_udc.c
index 881d74c..86c029a 100644
--- a/drivers/usb/gadget/omap_udc.c
+++ b/drivers/usb/gadget/omap_udc.c
@@ -491,32 +491,6 @@ static int read_fifo(struct omap_ep *ep, struct omap_req *req)
/*-------------------------------------------------------------------------*/
-static inline dma_addr_t dma_csac(unsigned lch)
-{
- dma_addr_t csac;
-
- /* omap 3.2/3.3 erratum: sometimes 0 is returned if CSAC/CDAC is
- * read before the DMA controller finished disabling the channel.
- */
- csac = OMAP_DMA_CSAC_REG(lch);
- if (csac == 0)
- csac = OMAP_DMA_CSAC_REG(lch);
- return csac;
-}
-
-static inline dma_addr_t dma_cdac(unsigned lch)
-{
- dma_addr_t cdac;
-
- /* omap 3.2/3.3 erratum: sometimes 0 is returned if CSAC/CDAC is
- * read before the DMA controller finished disabling the channel.
- */
- cdac = OMAP_DMA_CDAC_REG(lch);
- if (cdac == 0)
- cdac = OMAP_DMA_CDAC_REG(lch);
- return cdac;
-}
-
static u16 dma_src_len(struct omap_ep *ep, dma_addr_t start)
{
dma_addr_t end;
@@ -527,7 +501,7 @@ static u16 dma_src_len(struct omap_ep *ep, dma_addr_t start)
if (cpu_is_omap15xx())
return 0;
- end = dma_csac(ep->lch);
+ end = omap_get_dma_src_pos(ep->lch);
if (end == ep->dma_counter)
return 0;
@@ -537,15 +511,11 @@ static u16 dma_src_len(struct omap_ep *ep, dma_addr_t start)
return end - start;
}
-#define DMA_DEST_LAST(x) (cpu_is_omap15xx() \
- ? OMAP_DMA_CSAC_REG(x) /* really: CPC */ \
- : dma_cdac(x))
-
static u16 dma_dest_len(struct omap_ep *ep, dma_addr_t start)
{
dma_addr_t end;
- end = DMA_DEST_LAST(ep->lch);
+ end = omap_get_dma_dst_pos(ep->lch);
if (end == ep->dma_counter)
return 0;
@@ -596,7 +566,7 @@ static void next_in_dma(struct omap_ep *ep, struct omap_req *req)
0, 0);
omap_start_dma(ep->lch);
- ep->dma_counter = dma_csac(ep->lch);
+ ep->dma_counter = omap_get_dma_src_pos(ep->lch);
UDC_DMA_IRQ_EN_REG |= UDC_TX_DONE_IE(ep->dma_channel);
UDC_TXDMA_REG(ep->dma_channel) = UDC_TXN_START | txdma_ctrl;
req->dma_bytes = length;
@@ -654,7 +624,7 @@ static void next_out_dma(struct omap_ep *ep, struct omap_req *req)
omap_set_dma_dest_params(ep->lch, OMAP_DMA_PORT_EMIFF,
OMAP_DMA_AMODE_POST_INC, req->req.dma + req->req.actual,
0, 0);
- ep->dma_counter = DMA_DEST_LAST(ep->lch);
+ ep->dma_counter = omap_get_dma_dst_pos(ep->lch);
UDC_RXDMA_REG(ep->dma_channel) = UDC_RXN_STOP | (packets - 1);
UDC_DMA_IRQ_EN_REG |= UDC_RX_EOT_IE(ep->dma_channel);
@@ -834,7 +804,7 @@ static void dma_channel_claim(struct omap_ep *ep, unsigned channel)
/* channel type P: hw synch (fifo) */
if (cpu_class_is_omap1() && !cpu_is_omap15xx())
- OMAP1_DMA_LCH_CTRL_REG(ep->lch) = 2;
+ omap_set_dma_channel_mode(ep->lch, OMAP_DMA_LCH_P);
}
just_restart:
@@ -881,7 +851,7 @@ static void dma_channel_release(struct omap_ep *ep)
else
req = NULL;
- active = ((1 << 7) & OMAP_DMA_CCR_REG(ep->lch)) != 0;
+ active = omap_get_dma_active_status(ep->lch);
DBG("%s release %s %cxdma%d %p\n", ep->ep.name,
active ? "active" : "idle",
diff --git a/include/asm-arm/arch-omap/dma.h b/include/asm-arm/arch-omap/dma.h
index 46fe5a4..d188100 100644
--- a/include/asm-arm/arch-omap/dma.h
+++ b/include/asm-arm/arch-omap/dma.h
@@ -22,107 +22,128 @@
#define __ASM_ARCH_DMA_H
/* Hardware registers for omap1 */
-#define OMAP_DMA_BASE (0xfffed800)
-#define OMAP_DMA_GCR (OMAP_DMA_BASE + 0x400)
-#define OMAP_DMA_GSCR (OMAP_DMA_BASE + 0x404)
-#define OMAP_DMA_GRST (OMAP_DMA_BASE + 0x408)
-#define OMAP_DMA_HW_ID (OMAP_DMA_BASE + 0x442)
-#define OMAP_DMA_PCH2_ID (OMAP_DMA_BASE + 0x444)
-#define OMAP_DMA_PCH0_ID (OMAP_DMA_BASE + 0x446)
-#define OMAP_DMA_PCH1_ID (OMAP_DMA_BASE + 0x448)
-#define OMAP_DMA_PCHG_ID (OMAP_DMA_BASE + 0x44a)
-#define OMAP_DMA_PCHD_ID (OMAP_DMA_BASE + 0x44c)
-#define OMAP_DMA_CAPS_0_U (OMAP_DMA_BASE + 0x44e)
-#define OMAP_DMA_CAPS_0_L (OMAP_DMA_BASE + 0x450)
-#define OMAP_DMA_CAPS_1_U (OMAP_DMA_BASE + 0x452)
-#define OMAP_DMA_CAPS_1_L (OMAP_DMA_BASE + 0x454)
-#define OMAP_DMA_CAPS_2 (OMAP_DMA_BASE + 0x456)
-#define OMAP_DMA_CAPS_3 (OMAP_DMA_BASE + 0x458)
-#define OMAP_DMA_CAPS_4 (OMAP_DMA_BASE + 0x45a)
-#define OMAP_DMA_PCH2_SR (OMAP_DMA_BASE + 0x460)
-#define OMAP_DMA_PCH0_SR (OMAP_DMA_BASE + 0x480)
-#define OMAP_DMA_PCH1_SR (OMAP_DMA_BASE + 0x482)
-#define OMAP_DMA_PCHD_SR (OMAP_DMA_BASE + 0x4c0)
-
-/* Hardware registers for omap2 */
-#if defined(CONFIG_ARCH_OMAP3)
-#define OMAP_DMA4_BASE (L4_34XX_BASE + 0x56000)
-#else /* CONFIG_ARCH_OMAP2 */
-#define OMAP_DMA4_BASE (L4_24XX_BASE + 0x56000)
-#endif
-
-#define OMAP_DMA4_REVISION (OMAP_DMA4_BASE + 0x00)
-#define OMAP_DMA4_GCR_REG (OMAP_DMA4_BASE + 0x78)
-#define OMAP_DMA4_IRQSTATUS_L0 (OMAP_DMA4_BASE + 0x08)
-#define OMAP_DMA4_IRQSTATUS_L1 (OMAP_DMA4_BASE + 0x0c)
-#define OMAP_DMA4_IRQSTATUS_L2 (OMAP_DMA4_BASE + 0x10)
-#define OMAP_DMA4_IRQSTATUS_L3 (OMAP_DMA4_BASE + 0x14)
-#define OMAP_DMA4_IRQENABLE_L0 (OMAP_DMA4_BASE + 0x18)
-#define OMAP_DMA4_IRQENABLE_L1 (OMAP_DMA4_BASE + 0x1c)
-#define OMAP_DMA4_IRQENABLE_L2 (OMAP_DMA4_BASE + 0x20)
-#define OMAP_DMA4_IRQENABLE_L3 (OMAP_DMA4_BASE + 0x24)
-#define OMAP_DMA4_SYSSTATUS (OMAP_DMA4_BASE + 0x28)
-#define OMAP_DMA4_OCP_SYSCONFIG (OMAP_DMA4_BASE + 0x2c)
-#define OMAP_DMA4_CAPS_0 (OMAP_DMA4_BASE + 0x64)
-#define OMAP_DMA4_CAPS_2 (OMAP_DMA4_BASE + 0x6c)
-#define OMAP_DMA4_CAPS_3 (OMAP_DMA4_BASE + 0x70)
-#define OMAP_DMA4_CAPS_4 (OMAP_DMA4_BASE + 0x74)
+#define OMAP1_DMA_BASE (0xfffed800)
+
+#define OMAP1_DMA_GCR 0x400
+#define OMAP1_DMA_GSCR 0x404
+#define OMAP1_DMA_GRST 0x408
+#define OMAP1_DMA_HW_ID 0x442
+#define OMAP1_DMA_PCH2_ID 0x444
+#define OMAP1_DMA_PCH0_ID 0x446
+#define OMAP1_DMA_PCH1_ID 0x448
+#define OMAP1_DMA_PCHG_ID 0x44a
+#define OMAP1_DMA_PCHD_ID 0x44c
+#define OMAP1_DMA_CAPS_0_U 0x44e
+#define OMAP1_DMA_CAPS_0_L 0x450
+#define OMAP1_DMA_CAPS_1_U 0x452
+#define OMAP1_DMA_CAPS_1_L 0x454
+#define OMAP1_DMA_CAPS_2 0x456
+#define OMAP1_DMA_CAPS_3 0x458
+#define OMAP1_DMA_CAPS_4 0x45a
+#define OMAP1_DMA_PCH2_SR 0x460
+#define OMAP1_DMA_PCH0_SR 0x480
+#define OMAP1_DMA_PCH1_SR 0x482
+#define OMAP1_DMA_PCHD_SR 0x4c0
+
+/* Hardware registers for omap2 and omap3 */
+#define OMAP24XX_DMA4_BASE (L4_24XX_BASE + 0x56000)
+#define OMAP34XX_DMA4_BASE (L4_34XX_BASE + 0x56000)
+
+#define OMAP_DMA4_REVISION 0x00
+#define OMAP_DMA4_GCR 0x78
+#define OMAP_DMA4_IRQSTATUS_L0 0x08
+#define OMAP_DMA4_IRQSTATUS_L1 0x0c
+#define OMAP_DMA4_IRQSTATUS_L2 0x10
+#define OMAP_DMA4_IRQSTATUS_L3 0x14
+#define OMAP_DMA4_IRQENABLE_L0 0x18
+#define OMAP_DMA4_IRQENABLE_L1 0x1c
+#define OMAP_DMA4_IRQENABLE_L2 0x20
+#define OMAP_DMA4_IRQENABLE_L3 0x24
+#define OMAP_DMA4_SYSSTATUS 0x28
+#define OMAP_DMA4_OCP_SYSCONFIG 0x2c
+#define OMAP_DMA4_CAPS_0 0x64
+#define OMAP_DMA4_CAPS_2 0x6c
+#define OMAP_DMA4_CAPS_3 0x70
+#define OMAP_DMA4_CAPS_4 0x74
#define OMAP1_LOGICAL_DMA_CH_COUNT 17
#define OMAP_DMA4_LOGICAL_DMA_CH_COUNT 32 /* REVISIT: Is this 32 + 2? */
-#ifdef CONFIG_ARCH_OMAP1
-
/* Common channel specific registers for omap1 */
-#define OMAP_DMA_CSDP_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x00)
-#define OMAP_DMA_CCR_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x02)
-#define OMAP_DMA_CICR_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x04)
-#define OMAP_DMA_CSR_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x06)
-#define OMAP_DMA_CEN_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x10)
-#define OMAP_DMA_CFN_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x12)
-#define OMAP_DMA_CSFI_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x14)
-#define OMAP_DMA_CSEI_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x16)
-#define OMAP_DMA_CSAC_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x18)
-#define OMAP_DMA_CDAC_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x1a)
-#define OMAP_DMA_CDEI_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x1c)
-#define OMAP_DMA_CDFI_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x1e)
-#define OMAP_DMA_CLNK_CTRL_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x28)
-
-#else
+#define OMAP1_DMA_CH_BASE(n) (0x40 * (n) + 0x00)
+#define OMAP1_DMA_CSDP(n) (0x40 * (n) + 0x00)
+#define OMAP1_DMA_CCR(n) (0x40 * (n) + 0x02)
+#define OMAP1_DMA_CICR(n) (0x40 * (n) + 0x04)
+#define OMAP1_DMA_CSR(n) (0x40 * (n) + 0x06)
+#define OMAP1_DMA_CEN(n) (0x40 * (n) + 0x10)
+#define OMAP1_DMA_CFN(n) (0x40 * (n) + 0x12)
+#define OMAP1_DMA_CSFI(n) (0x40 * (n) + 0x14)
+#define OMAP1_DMA_CSEI(n) (0x40 * (n) + 0x16)
+#define OMAP1_DMA_CPC(n) (0x40 * (n) + 0x18) /* 15xx only */
+#define OMAP1_DMA_CSAC(n) (0x40 * (n) + 0x18)
+#define OMAP1_DMA_CDAC(n) (0x40 * (n) + 0x1a)
+#define OMAP1_DMA_CDEI(n) (0x40 * (n) + 0x1c)
+#define OMAP1_DMA_CDFI(n) (0x40 * (n) + 0x1e)
+#define OMAP1_DMA_CLNK_CTRL(n) (0x40 * (n) + 0x28)
/* Common channel specific registers for omap2 */
-#define OMAP_DMA_CCR_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x80)
-#define OMAP_DMA_CLNK_CTRL_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x84)
-#define OMAP_DMA_CICR_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x88)
-#define OMAP_DMA_CSR_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x8c)
-#define OMAP_DMA_CSDP_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x90)
-#define OMAP_DMA_CEN_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x94)
-#define OMAP_DMA_CFN_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x98)
-#define OMAP_DMA_CSEI_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xa4)
-#define OMAP_DMA_CSFI_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xa8)
-#define OMAP_DMA_CDEI_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xac)
-#define OMAP_DMA_CDFI_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xb0)
-#define OMAP_DMA_CSAC_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xb4)
-#define OMAP_DMA_CDAC_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xb8)
-
-#endif
+#define OMAP_DMA4_CH_BASE(n) (0x60 * (n) + 0x80)
+#define OMAP_DMA4_CCR(n) (0x60 * (n) + 0x80)
+#define OMAP_DMA4_CLNK_CTRL(n) (0x60 * (n) + 0x84)
+#define OMAP_DMA4_CICR(n) (0x60 * (n) + 0x88)
+#define OMAP_DMA4_CSR(n) (0x60 * (n) + 0x8c)
+#define OMAP_DMA4_CSDP(n) (0x60 * (n) + 0x90)
+#define OMAP_DMA4_CEN(n) (0x60 * (n) + 0x94)
+#define OMAP_DMA4_CFN(n) (0x60 * (n) + 0x98)
+#define OMAP_DMA4_CSEI(n) (0x60 * (n) + 0xa4)
+#define OMAP_DMA4_CSFI(n) (0x60 * (n) + 0xa8)
+#define OMAP_DMA4_CDEI(n) (0x60 * (n) + 0xac)
+#define OMAP_DMA4_CDFI(n) (0x60 * (n) + 0xb0)
+#define OMAP_DMA4_CSAC(n) (0x60 * (n) + 0xb4)
+#define OMAP_DMA4_CDAC(n) (0x60 * (n) + 0xb8)
/* Channel specific registers only on omap1 */
-#define OMAP1_DMA_CSSA_L_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x08)
-#define OMAP1_DMA_CSSA_U_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x0a)
-#define OMAP1_DMA_CDSA_L_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x0c)
-#define OMAP1_DMA_CDSA_U_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x0e)
-#define OMAP1_DMA_COLOR_L_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x20)
-#define OMAP1_DMA_CCR2_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x24)
-#define OMAP1_DMA_COLOR_U_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x22)
-#define OMAP1_DMA_LCH_CTRL_REG(n) __REG16(OMAP_DMA_BASE + 0x40 * (n) + 0x2a)
+#define OMAP1_DMA_CSSA_L(n) (0x40 * (n) + 0x08)
+#define OMAP1_DMA_CSSA_U(n) (0x40 * (n) + 0x0a)
+#define OMAP1_DMA_CDSA_L(n) (0x40 * (n) + 0x0c)
+#define OMAP1_DMA_CDSA_U(n) (0x40 * (n) + 0x0e)
+#define OMAP1_DMA_COLOR_L(n) (0x40 * (n) + 0x20)
+#define OMAP1_DMA_COLOR_U(n) (0x40 * (n) + 0x22)
+#define OMAP1_DMA_CCR2(n) (0x40 * (n) + 0x24)
+#define OMAP1_DMA_LCH_CTRL(n) (0x40 * (n) + 0x2a) /* not on 15xx */
+#define OMAP1_DMA_CCEN(n) 0
+#define OMAP1_DMA_CCFN(n) 0
/* Channel specific registers only on omap2 */
-#define OMAP2_DMA_CSSA_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0x9c)
-#define OMAP2_DMA_CDSA_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xa0)
-#define OMAP2_DMA_CCEN_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xbc)
-#define OMAP2_DMA_CCFN_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xc0)
-#define OMAP2_DMA_COLOR_REG(n) __REG32(OMAP_DMA4_BASE + 0x60 * (n) + 0xc4)
+#define OMAP_DMA4_CSSA(n) (0x60 * (n) + 0x9c)
+#define OMAP_DMA4_CDSA(n) (0x60 * (n) + 0xa0)
+#define OMAP_DMA4_CCEN(n) (0x60 * (n) + 0xbc)
+#define OMAP_DMA4_CCFN(n) (0x60 * (n) + 0xc0)
+#define OMAP_DMA4_COLOR(n) (0x60 * (n) + 0xc4)
+
+/* Dummy defines to keep multi-omap compiles happy */
+#define OMAP1_DMA_REVISION 0
+#define OMAP1_DMA_IRQSTATUS_L0 0
+#define OMAP1_DMA_IRQENABLE_L0 0
+#define OMAP1_DMA_OCP_SYSCONFIG 0
+#define OMAP_DMA4_HW_ID 0
+#define OMAP_DMA4_CAPS_0_L 0
+#define OMAP_DMA4_CAPS_0_U 0
+#define OMAP_DMA4_CAPS_1_L 0
+#define OMAP_DMA4_CAPS_1_U 0
+#define OMAP_DMA4_GSCR 0
+#define OMAP_DMA4_CPC(n) 0
+
+#define OMAP_DMA4_LCH_CTRL(n) 0
+#define OMAP_DMA4_COLOR_L(n) 0
+#define OMAP_DMA4_COLOR_U(n) 0
+#define OMAP_DMA4_CCR2(n) 0
+#define OMAP1_DMA_CSSA(n) 0
+#define OMAP1_DMA_CDSA(n) 0
+#define OMAP_DMA4_CSSA_L(n) 0
+#define OMAP_DMA4_CSSA_U(n) 0
+#define OMAP_DMA4_CDSA_L(n) 0
+#define OMAP_DMA4_CDSA_U(n) 0
/*----------------------------------------------------------------------------*/
@@ -369,6 +390,13 @@ enum omap_dma_write_mode {
OMAP_DMA_WRITE_LAST_NON_POSTED
};
+enum omap_dma_channel_mode {
+ OMAP_DMA_LCH_2D = 0,
+ OMAP_DMA_LCH_G,
+ OMAP_DMA_LCH_P,
+ OMAP_DMA_LCH_PD
+};
+
struct omap_dma_channel_params {
int data_type; /* data type 8,16,32 */
int elem_count; /* number of elements in a frame */
@@ -417,6 +445,7 @@ extern void omap_set_dma_transfer_params(int lch, int data_type,
extern void omap_set_dma_color_mode(int lch, enum omap_dma_color_mode mode,
u32 color);
extern void omap_set_dma_write_mode(int lch, enum omap_dma_write_mode mode);
+extern void omap_set_dma_channel_mode(int lch, enum omap_dma_channel_mode mode);
extern void omap_set_dma_src_params(int lch, int src_port, int src_amode,
unsigned long src_start,
@@ -447,6 +476,7 @@ extern dma_addr_t omap_get_dma_src_pos(int lch);
extern dma_addr_t omap_get_dma_dst_pos(int lch);
extern int omap_get_dma_src_addr_counter(int lch);
extern void omap_clear_dma(int lch);
+extern int omap_get_dma_active_status(int lch);
extern int omap_dma_running(void);
extern void omap_dma_set_global_params(int arb_rate, int max_fifo_depth,
int tparams);
