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clocksource: sh_mtu2: Add index to struct sh_mtu2_channel

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Use the index as the timer start/stop bit and when printing messages to
identify the channel.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Tested-by: Wolfram Sang <wsa@sang-engineering.com>
This commit is contained in:
Laurent Pinchart 2014-03-04 14:17:26 +01:00
parent da90a1c677
commit d2b9317706
1 changed files with 13 additions and 9 deletions
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22
drivers/clocksource/sh_mtu2.c
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@ -38,6 +38,7 @@ struct sh_mtu2_device;
struct sh_mtu2_channel {
struct sh_mtu2_device *mtu;
unsigned int index;
void __iomem *base;
int irq;
@ -110,7 +111,6 @@ static inline void sh_mtu2_write(struct sh_mtu2_channel *ch, int reg_nr,
static void sh_mtu2_start_stop_ch(struct sh_mtu2_channel *ch, int start)
{
struct sh_timer_config *cfg = ch->mtu->pdev->dev.platform_data;
unsigned long flags, value;
/* start stop register shared by multiple timer channels */
@ -118,9 +118,9 @@ static void sh_mtu2_start_stop_ch(struct sh_mtu2_channel *ch, int start)
value = sh_mtu2_read(ch, TSTR);
if (start)
value |= 1 << cfg->timer_bit;
value |= 1 << ch->index;
else
value &= ~(1 << cfg->timer_bit);
value &= ~(1 << ch->index);
sh_mtu2_write(ch, TSTR, value);
raw_spin_unlock_irqrestore(&sh_mtu2_lock, flags);
@ -138,7 +138,8 @@ static int sh_mtu2_enable(struct sh_mtu2_channel *ch)
/* enable clock */
ret = clk_enable(ch->mtu->clk);
if (ret) {
dev_err(&ch->mtu->pdev->dev, "cannot enable clock\n");
dev_err(&ch->mtu->pdev->dev, "ch%u: cannot enable clock\n",
ch->index);
return ret;
}
@ -211,7 +212,7 @@ static void sh_mtu2_clock_event_mode(enum clock_event_mode mode,
switch (mode) {
case CLOCK_EVT_MODE_PERIODIC:
dev_info(&ch->mtu->pdev->dev,
"used for periodic clock events\n");
"ch%u: used for periodic clock events\n", ch->index);
sh_mtu2_enable(ch);
break;
case CLOCK_EVT_MODE_UNUSED:
@ -250,15 +251,16 @@ static void sh_mtu2_register_clockevent(struct sh_mtu2_channel *ch,
ced->suspend = sh_mtu2_clock_event_suspend;
ced->resume = sh_mtu2_clock_event_resume;
dev_info(&ch->mtu->pdev->dev, "used for clock events\n");
dev_info(&ch->mtu->pdev->dev, "ch%u: used for clock events\n",
ch->index);
clockevents_register_device(ced);
ret = request_irq(ch->irq, sh_mtu2_interrupt,
IRQF_TIMER | IRQF_IRQPOLL | IRQF_NOBALANCING,
dev_name(&ch->mtu->pdev->dev), ch);
if (ret) {
dev_err(&ch->mtu->pdev->dev, "failed to request irq %d\n",
ch->irq);
dev_err(&ch->mtu->pdev->dev, "ch%u: failed to request irq %d\n",
ch->index, ch->irq);
return;
}
}
@ -279,10 +281,12 @@ static int sh_mtu2_setup_channel(struct sh_mtu2_channel *ch,
memset(ch, 0, sizeof(*ch));
ch->mtu = mtu;
ch->index = cfg->timer_bit;
ch->irq = platform_get_irq(mtu->pdev, 0);
if (ch->irq < 0) {
dev_err(&mtu->pdev->dev, "failed to get irq\n");
dev_err(&mtu->pdev->dev, "ch%u: failed to get irq\n",
ch->index);
return ch->irq;
}