[PATCH v4 06/25] ARM: common: edma: Internal API to use pointer to 'struct edma'
From: Peter Ujfalusi
Date: Thu Sep 24 2015 - 06:03:25 EST
Merge the iomem into the 'struct edma' and change the internal (static)
functions to use pointer to the edma_cc instead of the ctlr number.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@xxxxxx>
---
arch/arm/common/edma.c | 400 ++++++++++++++++++++++++-------------------------
1 file changed, 197 insertions(+), 203 deletions(-)
diff --git a/arch/arm/common/edma.c b/arch/arm/common/edma.c
index d82fceda13a3..0b4c0ee59ed9 100644
--- a/arch/arm/common/edma.c
+++ b/arch/arm/common/edma.c
@@ -114,108 +114,141 @@
#define EDMA_MAX_PARAMENTRY 512
/*****************************************************************************/
+struct edma {
+ struct device *dev;
+ void __iomem *base;
+
+ /* how many dma resources of each type */
+ unsigned num_channels;
+ unsigned num_region;
+ unsigned num_slots;
+ unsigned num_tc;
+ enum dma_event_q default_queue;
-static void __iomem *edmacc_regs_base[EDMA_MAX_CC];
+ /* list of channels with no even trigger; terminated by "-1" */
+ const s8 *noevent;
+
+ struct edma_soc_info *info;
+ int id;
+
+ /* The edma_inuse bit for each PaRAM slot is clear unless the
+ * channel is in use ... by ARM or DSP, for QDMA, or whatever.
+ */
+ DECLARE_BITMAP(edma_inuse, EDMA_MAX_PARAMENTRY);
-static inline unsigned int edma_read(unsigned ctlr, int offset)
+ /* The edma_unused bit for each channel is clear unless
+ * it is not being used on this platform. It uses a bit
+ * of SOC-specific initialization code.
+ */
+ DECLARE_BITMAP(edma_unused, EDMA_MAX_DMACH);
+
+ struct dma_interrupt_data {
+ void (*callback)(unsigned channel, unsigned short ch_status,
+ void *data);
+ void *data;
+ } intr_data[EDMA_MAX_DMACH];
+};
+/*****************************************************************************/
+
+static inline unsigned int edma_read(struct edma *cc, int offset)
{
- return (unsigned int)__raw_readl(edmacc_regs_base[ctlr] + offset);
+ return (unsigned int)__raw_readl(cc->base + offset);
}
-static inline void edma_write(unsigned ctlr, int offset, int val)
+static inline void edma_write(struct edma *cc, int offset, int val)
{
- __raw_writel(val, edmacc_regs_base[ctlr] + offset);
+ __raw_writel(val, cc->base + offset);
}
-static inline void edma_modify(unsigned ctlr, int offset, unsigned and,
- unsigned or)
+static inline void edma_modify(struct edma *cc, int offset, unsigned and,
+ unsigned or)
{
- unsigned val = edma_read(ctlr, offset);
+ unsigned val = edma_read(cc, offset);
val &= and;
val |= or;
- edma_write(ctlr, offset, val);
+ edma_write(cc, offset, val);
}
-static inline void edma_and(unsigned ctlr, int offset, unsigned and)
+static inline void edma_and(struct edma *cc, int offset, unsigned and)
{
- unsigned val = edma_read(ctlr, offset);
+ unsigned val = edma_read(cc, offset);
val &= and;
- edma_write(ctlr, offset, val);
+ edma_write(cc, offset, val);
}
-static inline void edma_or(unsigned ctlr, int offset, unsigned or)
+static inline void edma_or(struct edma *cc, int offset, unsigned or)
{
- unsigned val = edma_read(ctlr, offset);
+ unsigned val = edma_read(cc, offset);
val |= or;
- edma_write(ctlr, offset, val);
+ edma_write(cc, offset, val);
}
-static inline unsigned int edma_read_array(unsigned ctlr, int offset, int i)
+static inline unsigned int edma_read_array(struct edma *cc, int offset, int i)
{
- return edma_read(ctlr, offset + (i << 2));
+ return edma_read(cc, offset + (i << 2));
}
-static inline void edma_write_array(unsigned ctlr, int offset, int i,
+static inline void edma_write_array(struct edma *cc, int offset, int i,
unsigned val)
{
- edma_write(ctlr, offset + (i << 2), val);
+ edma_write(cc, offset + (i << 2), val);
}
-static inline void edma_modify_array(unsigned ctlr, int offset, int i,
+static inline void edma_modify_array(struct edma *cc, int offset, int i,
unsigned and, unsigned or)
{
- edma_modify(ctlr, offset + (i << 2), and, or);
+ edma_modify(cc, offset + (i << 2), and, or);
}
-static inline void edma_or_array(unsigned ctlr, int offset, int i, unsigned or)
+static inline void edma_or_array(struct edma *cc, int offset, int i, unsigned or)
{
- edma_or(ctlr, offset + (i << 2), or);
+ edma_or(cc, offset + (i << 2), or);
}
-static inline void edma_or_array2(unsigned ctlr, int offset, int i, int j,
+static inline void edma_or_array2(struct edma *cc, int offset, int i, int j,
unsigned or)
{
- edma_or(ctlr, offset + ((i*2 + j) << 2), or);
+ edma_or(cc, offset + ((i*2 + j) << 2), or);
}
-static inline void edma_write_array2(unsigned ctlr, int offset, int i, int j,
+static inline void edma_write_array2(struct edma *cc, int offset, int i, int j,
unsigned val)
{
- edma_write(ctlr, offset + ((i*2 + j) << 2), val);
+ edma_write(cc, offset + ((i*2 + j) << 2), val);
}
-static inline unsigned int edma_shadow0_read(unsigned ctlr, int offset)
+static inline unsigned int edma_shadow0_read(struct edma *cc, int offset)
{
- return edma_read(ctlr, EDMA_SHADOW0 + offset);
+ return edma_read(cc, EDMA_SHADOW0 + offset);
}
-static inline unsigned int edma_shadow0_read_array(unsigned ctlr, int offset,
+static inline unsigned int edma_shadow0_read_array(struct edma *cc, int offset,
int i)
{
- return edma_read(ctlr, EDMA_SHADOW0 + offset + (i << 2));
+ return edma_read(cc, EDMA_SHADOW0 + offset + (i << 2));
}
-static inline void edma_shadow0_write(unsigned ctlr, int offset, unsigned val)
+static inline void edma_shadow0_write(struct edma *cc, int offset, unsigned val)
{
- edma_write(ctlr, EDMA_SHADOW0 + offset, val);
+ edma_write(cc, EDMA_SHADOW0 + offset, val);
}
-static inline void edma_shadow0_write_array(unsigned ctlr, int offset, int i,
+static inline void edma_shadow0_write_array(struct edma *cc, int offset, int i,
unsigned val)
{
- edma_write(ctlr, EDMA_SHADOW0 + offset + (i << 2), val);
+ edma_write(cc, EDMA_SHADOW0 + offset + (i << 2), val);
}
-static inline unsigned int edma_parm_read(unsigned ctlr, int offset,
+static inline unsigned int edma_parm_read(struct edma *cc, int offset,
int param_no)
{
- return edma_read(ctlr, EDMA_PARM + offset + (param_no << 5));
+ return edma_read(cc, EDMA_PARM + offset + (param_no << 5));
}
-static inline void edma_parm_write(unsigned ctlr, int offset, int param_no,
+static inline void edma_parm_write(struct edma *cc, int offset, int param_no,
unsigned val)
{
- edma_write(ctlr, EDMA_PARM + offset + (param_no << 5), val);
+ edma_write(cc, EDMA_PARM + offset + (param_no << 5), val);
}
-static inline void edma_parm_modify(unsigned ctlr, int offset, int param_no,
+static inline void edma_parm_modify(struct edma *cc, int offset, int param_no,
unsigned and, unsigned or)
{
- edma_modify(ctlr, EDMA_PARM + offset + (param_no << 5), and, or);
+ edma_modify(cc, EDMA_PARM + offset + (param_no << 5), and, or);
}
-static inline void edma_parm_and(unsigned ctlr, int offset, int param_no,
+static inline void edma_parm_and(struct edma *cc, int offset, int param_no,
unsigned and)
{
- edma_and(ctlr, EDMA_PARM + offset + (param_no << 5), and);
+ edma_and(cc, EDMA_PARM + offset + (param_no << 5), and);
}
-static inline void edma_parm_or(unsigned ctlr, int offset, int param_no,
+static inline void edma_parm_or(struct edma *cc, int offset, int param_no,
unsigned or)
{
- edma_or(ctlr, EDMA_PARM + offset + (param_no << 5), or);
+ edma_or(cc, EDMA_PARM + offset + (param_no << 5), or);
}
static inline void set_bits(int offset, int len, unsigned long *p)
@@ -231,41 +264,6 @@ static inline void clear_bits(int offset, int len, unsigned long *p)
}
/*****************************************************************************/
-
-/* actual number of DMA channels and slots on this silicon */
-struct edma {
- struct device *dev;
- /* how many dma resources of each type */
- unsigned num_channels;
- unsigned num_region;
- unsigned num_slots;
- unsigned num_tc;
- enum dma_event_q default_queue;
-
- /* list of channels with no even trigger; terminated by "-1" */
- const s8 *noevent;
-
- struct edma_soc_info *info;
- int id;
-
- /* The edma_inuse bit for each PaRAM slot is clear unless the
- * channel is in use ... by ARM or DSP, for QDMA, or whatever.
- */
- DECLARE_BITMAP(edma_inuse, EDMA_MAX_PARAMENTRY);
-
- /* The edma_unused bit for each channel is clear unless
- * it is not being used on this platform. It uses a bit
- * of SOC-specific initialization code.
- */
- DECLARE_BITMAP(edma_unused, EDMA_MAX_DMACH);
-
- struct dma_interrupt_data {
- void (*callback)(unsigned channel, unsigned short ch_status,
- void *data);
- void *data;
- } intr_data[EDMA_MAX_DMACH];
-};
-
static struct edma *edma_cc[EDMA_MAX_CC];
static int arch_num_cc;
@@ -282,26 +280,25 @@ static const struct of_device_id edma_of_ids[] = {
/*****************************************************************************/
-static void map_dmach_queue(unsigned ctlr, unsigned ch_no,
- enum dma_event_q queue_no)
+static void map_dmach_queue(struct edma *cc, unsigned ch_no,
+ enum dma_event_q queue_no)
{
int bit = (ch_no & 0x7) * 4;
/* default to low priority queue */
if (queue_no == EVENTQ_DEFAULT)
- queue_no = edma_cc[ctlr]->default_queue;
+ queue_no = cc->default_queue;
queue_no &= 7;
- edma_modify_array(ctlr, EDMA_DMAQNUM, (ch_no >> 3),
- ~(0x7 << bit), queue_no << bit);
+ edma_modify_array(cc, EDMA_DMAQNUM, (ch_no >> 3),
+ ~(0x7 << bit), queue_no << bit);
}
-static void assign_priority_to_queue(unsigned ctlr, int queue_no,
- int priority)
+static void assign_priority_to_queue(struct edma *cc, int queue_no,
+ int priority)
{
int bit = queue_no * 4;
- edma_modify(ctlr, EDMA_QUEPRI, ~(0x7 << bit),
- ((priority & 0x7) << bit));
+ edma_modify(cc, EDMA_QUEPRI, ~(0x7 << bit), ((priority & 0x7) << bit));
}
/**
@@ -315,35 +312,30 @@ static void assign_priority_to_queue(unsigned ctlr, int queue_no,
* included in that particular EDMA variant (Eg : dm646x)
*
*/
-static void map_dmach_param(unsigned ctlr)
+static void map_dmach_param(struct edma *cc)
{
int i;
for (i = 0; i < EDMA_MAX_DMACH; i++)
- edma_write_array(ctlr, EDMA_DCHMAP , i , (i << 5));
+ edma_write_array(cc, EDMA_DCHMAP , i , (i << 5));
}
-static inline void
-setup_dma_interrupt(unsigned lch,
+static inline void setup_dma_interrupt(struct edma *cc, unsigned lch,
void (*callback)(unsigned channel, u16 ch_status, void *data),
void *data)
{
- unsigned ctlr;
-
- ctlr = EDMA_CTLR(lch);
lch = EDMA_CHAN_SLOT(lch);
if (!callback)
- edma_shadow0_write_array(ctlr, SH_IECR, lch >> 5,
- BIT(lch & 0x1f));
+ edma_shadow0_write_array(cc, SH_IECR, lch >> 5,
+ BIT(lch & 0x1f));
- edma_cc[ctlr]->intr_data[lch].callback = callback;
- edma_cc[ctlr]->intr_data[lch].data = data;
+ cc->intr_data[lch].callback = callback;
+ cc->intr_data[lch].data = data;
if (callback) {
- edma_shadow0_write_array(ctlr, SH_ICR, lch >> 5,
- BIT(lch & 0x1f));
- edma_shadow0_write_array(ctlr, SH_IESR, lch >> 5,
- BIT(lch & 0x1f));
+ edma_shadow0_write_array(cc, SH_ICR, lch >> 5, BIT(lch & 0x1f));
+ edma_shadow0_write_array(cc, SH_IESR, lch >> 5,
+ BIT(lch & 0x1f));
}
}
@@ -366,15 +358,15 @@ static irqreturn_t dma_irq_handler(int irq, void *data)
dev_dbg(cc->dev, "dma_irq_handler\n");
- sh_ipr = edma_shadow0_read_array(ctlr, SH_IPR, 0);
+ sh_ipr = edma_shadow0_read_array(cc, SH_IPR, 0);
if (!sh_ipr) {
- sh_ipr = edma_shadow0_read_array(ctlr, SH_IPR, 1);
+ sh_ipr = edma_shadow0_read_array(cc, SH_IPR, 1);
if (!sh_ipr)
return IRQ_NONE;
- sh_ier = edma_shadow0_read_array(ctlr, SH_IER, 1);
+ sh_ier = edma_shadow0_read_array(cc, SH_IER, 1);
bank = 1;
} else {
- sh_ier = edma_shadow0_read_array(ctlr, SH_IER, 0);
+ sh_ier = edma_shadow0_read_array(cc, SH_IER, 0);
bank = 0;
}
@@ -390,8 +382,7 @@ static irqreturn_t dma_irq_handler(int irq, void *data)
if (sh_ier & BIT(slot)) {
channel = (bank << 5) | slot;
/* Clear the corresponding IPR bits */
- edma_shadow0_write_array(ctlr, SH_ICR, bank,
- BIT(slot));
+ edma_shadow0_write_array(cc, SH_ICR, bank, BIT(slot));
if (cc->intr_data[channel].callback)
cc->intr_data[channel].callback(
EDMA_CTLR_CHAN(ctlr, channel),
@@ -400,7 +391,7 @@ static irqreturn_t dma_irq_handler(int irq, void *data)
}
} while (sh_ipr);
- edma_shadow0_write(ctlr, SH_IEVAL, 1);
+ edma_shadow0_write(cc, SH_IEVAL, 1);
return IRQ_HANDLED;
}
@@ -422,30 +413,30 @@ static irqreturn_t dma_ccerr_handler(int irq, void *data)
dev_dbg(cc->dev, "dma_ccerr_handler\n");
- if ((edma_read_array(ctlr, EDMA_EMR, 0) == 0) &&
- (edma_read_array(ctlr, EDMA_EMR, 1) == 0) &&
- (edma_read(ctlr, EDMA_QEMR) == 0) &&
- (edma_read(ctlr, EDMA_CCERR) == 0))
+ if ((edma_read_array(cc, EDMA_EMR, 0) == 0) &&
+ (edma_read_array(cc, EDMA_EMR, 1) == 0) &&
+ (edma_read(cc, EDMA_QEMR) == 0) &&
+ (edma_read(cc, EDMA_CCERR) == 0))
return IRQ_NONE;
while (1) {
int j = -1;
- if (edma_read_array(ctlr, EDMA_EMR, 0))
+ if (edma_read_array(cc, EDMA_EMR, 0))
j = 0;
- else if (edma_read_array(ctlr, EDMA_EMR, 1))
+ else if (edma_read_array(cc, EDMA_EMR, 1))
j = 1;
if (j >= 0) {
dev_dbg(cc->dev, "EMR%d %08x\n", j,
- edma_read_array(ctlr, EDMA_EMR, j));
+ edma_read_array(cc, EDMA_EMR, j));
for (i = 0; i < 32; i++) {
int k = (j << 5) + i;
- if (edma_read_array(ctlr, EDMA_EMR, j) &
+ if (edma_read_array(cc, EDMA_EMR, j) &
BIT(i)) {
/* Clear the corresponding EMR bits */
- edma_write_array(ctlr, EDMA_EMCR, j,
- BIT(i));
+ edma_write_array(cc, EDMA_EMCR, j,
+ BIT(i));
/* Clear any SER */
- edma_shadow0_write_array(ctlr, SH_SECR,
+ edma_shadow0_write_array(cc, SH_SECR,
j, BIT(i));
if (cc->intr_data[k].callback) {
cc->intr_data[k].callback(
@@ -455,44 +446,44 @@ static irqreturn_t dma_ccerr_handler(int irq, void *data)
}
}
}
- } else if (edma_read(ctlr, EDMA_QEMR)) {
+ } else if (edma_read(cc, EDMA_QEMR)) {
dev_dbg(cc->dev, "QEMR %02x\n",
- edma_read(ctlr, EDMA_QEMR));
+ edma_read(cc, EDMA_QEMR));
for (i = 0; i < 8; i++) {
- if (edma_read(ctlr, EDMA_QEMR) & BIT(i)) {
+ if (edma_read(cc, EDMA_QEMR) & BIT(i)) {
/* Clear the corresponding IPR bits */
- edma_write(ctlr, EDMA_QEMCR, BIT(i));
- edma_shadow0_write(ctlr, SH_QSECR,
- BIT(i));
+ edma_write(cc, EDMA_QEMCR, BIT(i));
+ edma_shadow0_write(cc, SH_QSECR,
+ BIT(i));
/* NOTE: not reported!! */
}
}
- } else if (edma_read(ctlr, EDMA_CCERR)) {
+ } else if (edma_read(cc, EDMA_CCERR)) {
dev_dbg(cc->dev, "CCERR %08x\n",
- edma_read(ctlr, EDMA_CCERR));
+ edma_read(cc, EDMA_CCERR));
/* FIXME: CCERR.BIT(16) ignored! much better
* to just write CCERRCLR with CCERR value...
*/
for (i = 0; i < 8; i++) {
- if (edma_read(ctlr, EDMA_CCERR) & BIT(i)) {
+ if (edma_read(cc, EDMA_CCERR) & BIT(i)) {
/* Clear the corresponding IPR bits */
- edma_write(ctlr, EDMA_CCERRCLR, BIT(i));
+ edma_write(cc, EDMA_CCERRCLR, BIT(i));
/* NOTE: not reported!! */
}
}
}
- if ((edma_read_array(ctlr, EDMA_EMR, 0) == 0) &&
- (edma_read_array(ctlr, EDMA_EMR, 1) == 0) &&
- (edma_read(ctlr, EDMA_QEMR) == 0) &&
- (edma_read(ctlr, EDMA_CCERR) == 0))
+ if ((edma_read_array(cc, EDMA_EMR, 0) == 0) &&
+ (edma_read_array(cc, EDMA_EMR, 1) == 0) &&
+ (edma_read(cc, EDMA_QEMR) == 0) &&
+ (edma_read(cc, EDMA_CCERR) == 0))
break;
cnt++;
if (cnt > 10)
break;
}
- edma_write(ctlr, EDMA_EEVAL, 1);
+ edma_write(cc, EDMA_EEVAL, 1);
return IRQ_HANDLED;
}
@@ -629,18 +620,19 @@ int edma_alloc_channel(int channel,
}
/* ensure access through shadow region 0 */
- edma_or_array2(ctlr, EDMA_DRAE, 0, channel >> 5, BIT(channel & 0x1f));
+ edma_or_array2(edma_cc[ctlr], EDMA_DRAE, 0, channel >> 5, BIT(channel & 0x1f));
/* ensure no events are pending */
edma_stop(EDMA_CTLR_CHAN(ctlr, channel));
- memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(channel),
- &dummy_paramset, PARM_SIZE);
+ memcpy_toio(edma_cc[ctlr]->base + PARM_OFFSET(channel), &dummy_paramset,
+ PARM_SIZE);
if (callback)
- setup_dma_interrupt(EDMA_CTLR_CHAN(ctlr, channel),
- callback, data);
+ setup_dma_interrupt(edma_cc[ctlr],
+ EDMA_CTLR_CHAN(ctlr, channel), callback,
+ data);
- map_dmach_queue(ctlr, channel, eventq_no);
+ map_dmach_queue(edma_cc[ctlr], channel, eventq_no);
return EDMA_CTLR_CHAN(ctlr, channel);
}
@@ -668,11 +660,11 @@ void edma_free_channel(unsigned channel)
if (channel >= edma_cc[ctlr]->num_channels)
return;
- setup_dma_interrupt(channel, NULL, NULL);
+ setup_dma_interrupt(edma_cc[ctlr], channel, NULL, NULL);
/* REVISIT should probably take out of shadow region 0 */
- memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(channel),
- &dummy_paramset, PARM_SIZE);
+ memcpy_toio(edma_cc[ctlr]->base + PARM_OFFSET(channel), &dummy_paramset,
+ PARM_SIZE);
clear_bit(channel, edma_cc[ctlr]->edma_inuse);
}
EXPORT_SYMBOL(edma_free_channel);
@@ -716,8 +708,8 @@ int edma_alloc_slot(unsigned ctlr, int slot)
return -EBUSY;
}
- memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot),
- &dummy_paramset, PARM_SIZE);
+ memcpy_toio(edma_cc[ctlr]->base + PARM_OFFSET(slot), &dummy_paramset,
+ PARM_SIZE);
return EDMA_CTLR_CHAN(ctlr, slot);
}
@@ -742,8 +734,8 @@ void edma_free_slot(unsigned slot)
slot >= edma_cc[ctlr]->num_slots)
return;
- memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot),
- &dummy_paramset, PARM_SIZE);
+ memcpy_toio(edma_cc[ctlr]->base + PARM_OFFSET(slot), &dummy_paramset,
+ PARM_SIZE);
clear_bit(slot, edma_cc[ctlr]->edma_inuse);
}
EXPORT_SYMBOL(edma_free_slot);
@@ -768,7 +760,7 @@ dma_addr_t edma_get_position(unsigned slot, bool dst)
offs = PARM_OFFSET(slot);
offs += dst ? PARM_DST : PARM_SRC;
- return edma_read(ctlr, offs);
+ return edma_read(edma_cc[ctlr], offs);
}
/**
@@ -791,7 +783,7 @@ void edma_link(unsigned from, unsigned to)
return;
if (to >= edma_cc[ctlr_to]->num_slots)
return;
- edma_parm_modify(ctlr_from, PARM_LINK_BCNTRLD, from, 0xffff0000,
+ edma_parm_modify(edma_cc[ctlr_from], PARM_LINK_BCNTRLD, from, 0xffff0000,
PARM_OFFSET(to));
}
EXPORT_SYMBOL(edma_link);
@@ -819,8 +811,7 @@ void edma_write_slot(unsigned slot, const struct edmacc_param *param)
if (slot >= edma_cc[ctlr]->num_slots)
return;
- memcpy_toio(edmacc_regs_base[ctlr] + PARM_OFFSET(slot), param,
- PARM_SIZE);
+ memcpy_toio(edma_cc[ctlr]->base + PARM_OFFSET(slot), param, PARM_SIZE);
}
EXPORT_SYMBOL(edma_write_slot);
@@ -841,8 +832,8 @@ void edma_read_slot(unsigned slot, struct edmacc_param *param)
if (slot >= edma_cc[ctlr]->num_slots)
return;
- memcpy_fromio(param, edmacc_regs_base[ctlr] + PARM_OFFSET(slot),
- PARM_SIZE);
+ memcpy_fromio(param, edma_cc[ctlr]->base + PARM_OFFSET(slot),
+ PARM_SIZE);
}
EXPORT_SYMBOL(edma_read_slot);
@@ -867,7 +858,8 @@ void edma_pause(unsigned channel)
if (channel < edma_cc[ctlr]->num_channels) {
unsigned int mask = BIT(channel & 0x1f);
- edma_shadow0_write_array(ctlr, SH_EECR, channel >> 5, mask);
+ edma_shadow0_write_array(edma_cc[ctlr], SH_EECR, channel >> 5,
+ mask);
}
}
EXPORT_SYMBOL(edma_pause);
@@ -888,7 +880,8 @@ void edma_resume(unsigned channel)
if (channel < edma_cc[ctlr]->num_channels) {
unsigned int mask = BIT(channel & 0x1f);
- edma_shadow0_write_array(ctlr, SH_EESR, channel >> 5, mask);
+ edma_shadow0_write_array(edma_cc[ctlr], SH_EESR, channel >> 5,
+ mask);
}
}
EXPORT_SYMBOL(edma_resume);
@@ -902,10 +895,11 @@ int edma_trigger_channel(unsigned channel)
channel = EDMA_CHAN_SLOT(channel);
mask = BIT(channel & 0x1f);
- edma_shadow0_write_array(ctlr, SH_ESR, (channel >> 5), mask);
+ edma_shadow0_write_array(edma_cc[ctlr], SH_ESR, (channel >> 5), mask);
pr_debug("EDMA: ESR%d %08x\n", (channel >> 5),
- edma_shadow0_read_array(ctlr, SH_ESR, (channel >> 5)));
+ edma_shadow0_read_array(edma_cc[ctlr], SH_ESR,
+ (channel >> 5)));
return 0;
}
EXPORT_SYMBOL(edma_trigger_channel);
@@ -929,28 +923,29 @@ int edma_start(unsigned channel)
channel = EDMA_CHAN_SLOT(channel);
if (channel < edma_cc[ctlr]->num_channels) {
+ struct edma *cc = edma_cc[ctlr];
int j = channel >> 5;
unsigned int mask = BIT(channel & 0x1f);
/* EDMA channels without event association */
- if (test_bit(channel, edma_cc[ctlr]->edma_unused)) {
+ if (test_bit(channel, cc->edma_unused)) {
pr_debug("EDMA: ESR%d %08x\n", j,
- edma_shadow0_read_array(ctlr, SH_ESR, j));
- edma_shadow0_write_array(ctlr, SH_ESR, j, mask);
+ edma_shadow0_read_array(cc, SH_ESR, j));
+ edma_shadow0_write_array(cc, SH_ESR, j, mask);
return 0;
}
/* EDMA channel with event association */
pr_debug("EDMA: ER%d %08x\n", j,
- edma_shadow0_read_array(ctlr, SH_ER, j));
+ edma_shadow0_read_array(cc, SH_ER, j));
/* Clear any pending event or error */
- edma_write_array(ctlr, EDMA_ECR, j, mask);
- edma_write_array(ctlr, EDMA_EMCR, j, mask);
+ edma_write_array(cc, EDMA_ECR, j, mask);
+ edma_write_array(cc, EDMA_EMCR, j, mask);
/* Clear any SER */
- edma_shadow0_write_array(ctlr, SH_SECR, j, mask);
- edma_shadow0_write_array(ctlr, SH_EESR, j, mask);
+ edma_shadow0_write_array(cc, SH_SECR, j, mask);
+ edma_shadow0_write_array(cc, SH_EESR, j, mask);
pr_debug("EDMA: EER%d %08x\n", j,
- edma_shadow0_read_array(ctlr, SH_EER, j));
+ edma_shadow0_read_array(cc, SH_EER, j));
return 0;
}
@@ -975,19 +970,20 @@ void edma_stop(unsigned channel)
channel = EDMA_CHAN_SLOT(channel);
if (channel < edma_cc[ctlr]->num_channels) {
+ struct edma *cc = edma_cc[ctlr];
int j = channel >> 5;
unsigned int mask = BIT(channel & 0x1f);
- edma_shadow0_write_array(ctlr, SH_EECR, j, mask);
- edma_shadow0_write_array(ctlr, SH_ECR, j, mask);
- edma_shadow0_write_array(ctlr, SH_SECR, j, mask);
- edma_write_array(ctlr, EDMA_EMCR, j, mask);
+ edma_shadow0_write_array(cc, SH_EECR, j, mask);
+ edma_shadow0_write_array(cc, SH_ECR, j, mask);
+ edma_shadow0_write_array(cc, SH_SECR, j, mask);
+ edma_write_array(cc, EDMA_EMCR, j, mask);
/* clear possibly pending completion interrupt */
- edma_shadow0_write_array(ctlr, SH_ICR, j, mask);
+ edma_shadow0_write_array(cc, SH_ICR, j, mask);
pr_debug("EDMA: EER%d %08x\n", j,
- edma_shadow0_read_array(ctlr, SH_EER, j));
+ edma_shadow0_read_array(cc, SH_EER, j));
/* REVISIT: consider guarding against inappropriate event
* chaining by overwriting with dummy_paramset.
@@ -1017,17 +1013,18 @@ void edma_clean_channel(unsigned channel)
channel = EDMA_CHAN_SLOT(channel);
if (channel < edma_cc[ctlr]->num_channels) {
+ struct edma *cc = edma_cc[ctlr];
int j = (channel >> 5);
unsigned int mask = BIT(channel & 0x1f);
pr_debug("EDMA: EMR%d %08x\n", j,
- edma_read_array(ctlr, EDMA_EMR, j));
- edma_shadow0_write_array(ctlr, SH_ECR, j, mask);
+ edma_read_array(cc, EDMA_EMR, j));
+ edma_shadow0_write_array(cc, SH_ECR, j, mask);
/* Clear the corresponding EMR bits */
- edma_write_array(ctlr, EDMA_EMCR, j, mask);
+ edma_write_array(cc, EDMA_EMCR, j, mask);
/* Clear any SER */
- edma_shadow0_write_array(ctlr, SH_SECR, j, mask);
- edma_write(ctlr, EDMA_CCERRCLR, BIT(16) | BIT(1) | BIT(0));
+ edma_shadow0_write_array(cc, SH_SECR, j, mask);
+ edma_write(cc, EDMA_CCERRCLR, BIT(16) | BIT(1) | BIT(0));
}
}
EXPORT_SYMBOL(edma_clean_channel);
@@ -1056,7 +1053,7 @@ void edma_assign_channel_eventq(unsigned channel, enum dma_event_q eventq_no)
if (eventq_no >= edma_cc[ctlr]->num_tc)
return;
- map_dmach_queue(ctlr, channel, eventq_no);
+ map_dmach_queue(edma_cc[ctlr], channel, eventq_no);
}
EXPORT_SYMBOL(edma_assign_channel_eventq);
@@ -1068,7 +1065,7 @@ static int edma_setup_from_hw(struct device *dev, struct edma_soc_info *pdata,
s8 (*queue_priority_map)[2];
/* Decode the eDMA3 configuration from CCCFG register */
- cccfg = edma_read(cc_id, EDMA_CCCFG);
+ cccfg = edma_read(edma_cc, EDMA_CCCFG);
value = GET_NUM_REGN(cccfg);
edma_cc->num_region = BIT(value);
@@ -1281,10 +1278,6 @@ static int edma_probe(struct platform_device *pdev)
}
}
- edmacc_regs_base[dev_id] = devm_ioremap_resource(dev, mem);
- if (IS_ERR(edmacc_regs_base[dev_id]))
- return PTR_ERR(edmacc_regs_base[dev_id]);
-
edma_cc[dev_id] = devm_kzalloc(dev, sizeof(struct edma), GFP_KERNEL);
if (!edma_cc[dev_id])
return -ENOMEM;
@@ -1294,6 +1287,10 @@ static int edma_probe(struct platform_device *pdev)
cc->id = dev_id;
dev_set_drvdata(dev, cc);
+ cc->base = devm_ioremap_resource(dev, mem);
+ if (IS_ERR(cc->base))
+ return PTR_ERR(cc->base);
+
/* Get eDMA3 configuration from IP */
ret = edma_setup_from_hw(dev, info, cc, dev_id);
if (ret)
@@ -1301,11 +1298,9 @@ static int edma_probe(struct platform_device *pdev)
cc->default_queue = info->default_queue;
- dev_dbg(dev, "DMA REG BASE ADDR=%p\n", edmacc_regs_base[dev_id]);
-
for (i = 0; i < cc->num_slots; i++)
- memcpy_toio(edmacc_regs_base[dev_id] + PARM_OFFSET(i),
- &dummy_paramset, PARM_SIZE);
+ memcpy_toio(cc->base + PARM_OFFSET(i), &dummy_paramset,
+ PARM_SIZE);
/* Mark all channels as unused */
memset(cc->edma_unused, 0xff, sizeof(cc->edma_unused));
@@ -1373,23 +1368,23 @@ static int edma_probe(struct platform_device *pdev)
}
for (i = 0; i < cc->num_channels; i++)
- map_dmach_queue(dev_id, i, info->default_queue);
+ map_dmach_queue(cc, i, info->default_queue);
queue_priority_mapping = info->queue_priority_mapping;
/* Event queue priority mapping */
for (i = 0; queue_priority_mapping[i][0] != -1; i++)
- assign_priority_to_queue(dev_id, queue_priority_mapping[i][0],
+ assign_priority_to_queue(cc, queue_priority_mapping[i][0],
queue_priority_mapping[i][1]);
/* Map the channel to param entry if channel mapping logic exist */
- if (edma_read(dev_id, EDMA_CCCFG) & CHMAP_EXIST)
- map_dmach_param(dev_id);
+ if (edma_read(cc, EDMA_CCCFG) & CHMAP_EXIST)
+ map_dmach_param(cc);
for (i = 0; i < cc->num_region; i++) {
- edma_write_array2(dev_id, EDMA_DRAE, i, 0, 0x0);
- edma_write_array2(dev_id, EDMA_DRAE, i, 1, 0x0);
- edma_write_array(dev_id, EDMA_QRAE, i, 0x0);
+ edma_write_array2(cc, EDMA_DRAE, i, 0, 0x0);
+ edma_write_array2(cc, EDMA_DRAE, i, 1, 0x0);
+ edma_write_array(cc, EDMA_QRAE, i, 0x0);
}
cc->info = info;
arch_num_cc++;
@@ -1412,20 +1407,19 @@ static int edma_pm_resume(struct device *dev)
/* Event queue priority mapping */
for (i = 0; queue_priority_mapping[i][0] != -1; i++)
- assign_priority_to_queue(cc->id, queue_priority_mapping[i][0],
+ assign_priority_to_queue(cc, queue_priority_mapping[i][0],
queue_priority_mapping[i][1]);
/* Map the channel to param entry if channel mapping logic */
- if (edma_read(cc->id, EDMA_CCCFG) & CHMAP_EXIST)
- map_dmach_param(cc->id);
+ if (edma_read(cc, EDMA_CCCFG) & CHMAP_EXIST)
+ map_dmach_param(cc);
for (i = 0; i < cc->num_channels; i++) {
if (test_bit(i, cc->edma_inuse)) {
/* ensure access through shadow region 0 */
- edma_or_array2(cc->id, EDMA_DRAE, 0, i >> 5,
- BIT(i & 0x1f));
+ edma_or_array2(cc, EDMA_DRAE, 0, i >> 5, BIT(i & 0x1f));
- setup_dma_interrupt(EDMA_CTLR_CHAN(cc->id, i),
+ setup_dma_interrupt(cc, EDMA_CTLR_CHAN(cc->id, i),
cc->intr_data[i].callback,
cc->intr_data[i].data);
}
--
2.5.2
--
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