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Blackfin: gptimers: use bfin read/write helpers
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Use proper helper macros for reading/writing the MMRs rather than
volatile markings on the struct.

Signed-off-by: Mike Frysinger <[email protected]>
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@vapier
vapier committed Jul 23, 2011
1 parent 24a6b91 commit 997f95e
Showing 1 changed file with 25 additions and 20 deletions.
45 changes: 25 additions & 20 deletions arch/blackfin/kernel/gptimers.c
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Original file line number Diff line number Diff line change
Expand Up @@ -124,102 +124,107 @@ static uint32_t const timil_mask[MAX_BLACKFIN_GPTIMERS] =
void set_gptimer_pwidth(unsigned int timer_id, uint32_t value)
{
tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
timer_regs[timer_id]->width = value;
bfin_write(&timer_regs[timer_id]->width, value);
SSYNC();
}
EXPORT_SYMBOL(set_gptimer_pwidth);

uint32_t get_gptimer_pwidth(unsigned int timer_id)
{
tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
return timer_regs[timer_id]->width;
return bfin_read(&timer_regs[timer_id]->width);
}
EXPORT_SYMBOL(get_gptimer_pwidth);

void set_gptimer_period(unsigned int timer_id, uint32_t period)
{
tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
timer_regs[timer_id]->period = period;
bfin_write(&timer_regs[timer_id]->period, period);
SSYNC();
}
EXPORT_SYMBOL(set_gptimer_period);

uint32_t get_gptimer_period(unsigned int timer_id)
{
tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
return timer_regs[timer_id]->period;
return bfin_read(&timer_regs[timer_id]->period);
}
EXPORT_SYMBOL(get_gptimer_period);

uint32_t get_gptimer_count(unsigned int timer_id)
{
tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
return timer_regs[timer_id]->counter;
return bfin_read(&timer_regs[timer_id]->counter);
}
EXPORT_SYMBOL(get_gptimer_count);

uint32_t get_gptimer_status(unsigned int group)
{
tassert(group < BFIN_TIMER_NUM_GROUP);
return group_regs[group]->status;
return bfin_read(&group_regs[group]->status);
}
EXPORT_SYMBOL(get_gptimer_status);

void set_gptimer_status(unsigned int group, uint32_t value)
{
tassert(group < BFIN_TIMER_NUM_GROUP);
group_regs[group]->status = value;
bfin_write(&group_regs[group]->status, value);
SSYNC();
}
EXPORT_SYMBOL(set_gptimer_status);

static uint32_t read_gptimer_status(unsigned int timer_id)
{
return bfin_read(&group_regs[BFIN_TIMER_OCTET(timer_id)]->status);
}

int get_gptimer_intr(unsigned int timer_id)
{
tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
return !!(group_regs[BFIN_TIMER_OCTET(timer_id)]->status & timil_mask[timer_id]);
return !!(read_gptimer_status(timer_id) & timil_mask[timer_id]);
}
EXPORT_SYMBOL(get_gptimer_intr);

void clear_gptimer_intr(unsigned int timer_id)
{
tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
group_regs[BFIN_TIMER_OCTET(timer_id)]->status = timil_mask[timer_id];
bfin_write(&group_regs[BFIN_TIMER_OCTET(timer_id)]->status, timil_mask[timer_id]);
}
EXPORT_SYMBOL(clear_gptimer_intr);

int get_gptimer_over(unsigned int timer_id)
{
tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
return !!(group_regs[BFIN_TIMER_OCTET(timer_id)]->status & tovf_mask[timer_id]);
return !!(read_gptimer_status(timer_id) & tovf_mask[timer_id]);
}
EXPORT_SYMBOL(get_gptimer_over);

void clear_gptimer_over(unsigned int timer_id)
{
tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
group_regs[BFIN_TIMER_OCTET(timer_id)]->status = tovf_mask[timer_id];
bfin_write(&group_regs[BFIN_TIMER_OCTET(timer_id)]->status, tovf_mask[timer_id]);
}
EXPORT_SYMBOL(clear_gptimer_over);

int get_gptimer_run(unsigned int timer_id)
{
tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
return !!(group_regs[BFIN_TIMER_OCTET(timer_id)]->status & trun_mask[timer_id]);
return !!(read_gptimer_status(timer_id) & trun_mask[timer_id]);
}
EXPORT_SYMBOL(get_gptimer_run);

void set_gptimer_config(unsigned int timer_id, uint16_t config)
{
tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
timer_regs[timer_id]->config = config;
bfin_write(&timer_regs[timer_id]->config, config);
SSYNC();
}
EXPORT_SYMBOL(set_gptimer_config);

uint16_t get_gptimer_config(unsigned int timer_id)
{
tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
return timer_regs[timer_id]->config;
return bfin_read(&timer_regs[timer_id]->config);
}
EXPORT_SYMBOL(get_gptimer_config);

Expand All @@ -228,7 +233,7 @@ void enable_gptimers(uint16_t mask)
int i;
tassert((mask & ~BLACKFIN_GPTIMER_IDMASK) == 0);
for (i = 0; i < BFIN_TIMER_NUM_GROUP; ++i) {
group_regs[i]->enable = mask & 0xFF;
bfin_write(&group_regs[i]->enable, mask & 0xFF);
mask >>= 8;
}
SSYNC();
Expand All @@ -241,7 +246,7 @@ static void _disable_gptimers(uint16_t mask)
uint16_t m = mask;
tassert((mask & ~BLACKFIN_GPTIMER_IDMASK) == 0);
for (i = 0; i < BFIN_TIMER_NUM_GROUP; ++i) {
group_regs[i]->disable = m & 0xFF;
bfin_write(&group_regs[i]->disable, m & 0xFF);
m >>= 8;
}
}
Expand All @@ -252,7 +257,7 @@ void disable_gptimers(uint16_t mask)
_disable_gptimers(mask);
for (i = 0; i < MAX_BLACKFIN_GPTIMERS; ++i)
if (mask & (1 << i))
group_regs[BFIN_TIMER_OCTET(i)]->status = trun_mask[i];
bfin_write(&group_regs[BFIN_TIMER_OCTET(i)]->status, trun_mask[i]);
SSYNC();
}
EXPORT_SYMBOL(disable_gptimers);
Expand All @@ -267,15 +272,15 @@ EXPORT_SYMBOL(disable_gptimers_sync);
void set_gptimer_pulse_hi(unsigned int timer_id)
{
tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
timer_regs[timer_id]->config |= TIMER_PULSE_HI;
bfin_write_or(&timer_regs[timer_id]->config, TIMER_PULSE_HI);
SSYNC();
}
EXPORT_SYMBOL(set_gptimer_pulse_hi);

void clear_gptimer_pulse_hi(unsigned int timer_id)
{
tassert(timer_id < MAX_BLACKFIN_GPTIMERS);
timer_regs[timer_id]->config &= ~TIMER_PULSE_HI;
bfin_write_and(&timer_regs[timer_id]->config, ~TIMER_PULSE_HI);
SSYNC();
}
EXPORT_SYMBOL(clear_gptimer_pulse_hi);
Expand All @@ -285,7 +290,7 @@ uint16_t get_enabled_gptimers(void)
int i;
uint16_t result = 0;
for (i = 0; i < BFIN_TIMER_NUM_GROUP; ++i)
result |= (group_regs[i]->enable << (i << 3));
result |= (bfin_read(&group_regs[i]->enable) << (i << 3));
return result;
}
EXPORT_SYMBOL(get_enabled_gptimers);
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