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clocksource: sh_cmt: Split channel setup to separate function

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Move the channel setup code from sh_cmt_setup to a new
sh_cmt_setup_channel function and call it from sh_cmt_setup.

Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
This commit is contained in:
Laurent Pinchart 2014-01-27 22:04:17 +01:00
parent 2653caf438
commit b882e7b13b
1 changed files with 47 additions and 32 deletions
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79
drivers/clocksource/sh_cmt.c
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@ -693,12 +693,55 @@ static int sh_cmt_register(struct sh_cmt_channel *ch, char *name,
return 0;
}
static int sh_cmt_setup_channel(struct sh_cmt_channel *ch,
struct sh_cmt_device *cmt)
{
struct sh_timer_config *cfg = cmt->pdev->dev.platform_data;
int irq;
int ret;
memset(ch, 0, sizeof(*ch));
ch->cmt = cmt;
irq = platform_get_irq(cmt->pdev, 0);
if (irq < 0) {
dev_err(&cmt->pdev->dev, "failed to get irq\n");
return irq;
}
if (cmt->width == (sizeof(ch->max_match_value) * 8))
ch->max_match_value = ~0;
else
ch->max_match_value = (1 << cmt->width) - 1;
ch->match_value = ch->max_match_value;
raw_spin_lock_init(&ch->lock);
ret = sh_cmt_register(ch, (char *)dev_name(&cmt->pdev->dev),
cfg->clockevent_rating,
cfg->clocksource_rating);
if (ret) {
dev_err(&cmt->pdev->dev, "registration failed\n");
return ret;
}
ch->cs_enabled = false;
ret = request_irq(irq, sh_cmt_interrupt,
IRQF_TIMER | IRQF_IRQPOLL | IRQF_NOBALANCING,
dev_name(&cmt->pdev->dev), ch);
if (ret) {
dev_err(&cmt->pdev->dev, "failed to request irq %d\n", irq);
return ret;
}
return 0;
}
static int sh_cmt_setup(struct sh_cmt_device *cmt, struct platform_device *pdev)
{
struct sh_timer_config *cfg = pdev->dev.platform_data;
struct sh_cmt_channel *ch = &cmt->channel;
struct resource *res, *res2;
int irq, ret;
int ret;
ret = -ENXIO;
memset(cmt, 0, sizeof(*cmt));
@ -718,12 +761,6 @@ static int sh_cmt_setup(struct sh_cmt_device *cmt, struct platform_device *pdev)
/* optional resource for the shared timer start/stop register */
res2 = platform_get_resource(cmt->pdev, IORESOURCE_MEM, 1);
irq = platform_get_irq(cmt->pdev, 0);
if (irq < 0) {
dev_err(&cmt->pdev->dev, "failed to get irq\n");
goto err0;
}
/* map memory, let mapbase point to our channel */
cmt->mapbase = ioremap_nocache(res->start, resource_size(res));
if (cmt->mapbase == NULL) {
@ -775,31 +812,9 @@ static int sh_cmt_setup(struct sh_cmt_device *cmt, struct platform_device *pdev)
cmt->clear_bits = ~0xc000;
}
if (cmt->width == (sizeof(ch->max_match_value) * 8))
ch->max_match_value = ~0;
else
ch->max_match_value = (1 << cmt->width) - 1;
ch->cmt = cmt;
ch->match_value = ch->max_match_value;
raw_spin_lock_init(&ch->lock);
ret = sh_cmt_register(ch, (char *)dev_name(&cmt->pdev->dev),
cfg->clockevent_rating,
cfg->clocksource_rating);
if (ret) {
dev_err(&cmt->pdev->dev, "registration failed\n");
ret = sh_cmt_setup_channel(&cmt->channel, cmt);
if (ret < 0)
goto err4;
}
ch->cs_enabled = false;
ret = request_irq(irq, sh_cmt_interrupt,
IRQF_TIMER | IRQF_IRQPOLL | IRQF_NOBALANCING,
dev_name(&cmt->pdev->dev), ch);
if (ret) {
dev_err(&cmt->pdev->dev, "failed to request irq %d\n", irq);
goto err4;
}
platform_set_drvdata(pdev, cmt);