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mfd: Enable Device Tree support for the db8500-prcmu 

This patch will enable probing to occur during a Device Tree enabled
boot. The IRQ base is expected to be located in and will be fetched
from the DT itself. We also prevent any of the db8500 regulators
from being registered here, as they will be enabled via DT instead.

Signed-off-by: Lee Jones <lee.jones@linaro.org>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
This commit is contained in:
Lee Jones 2012-05-09 17:19:25 +02:00 committed by Samuel Ortiz
parent 9fc63f670f
commit ca7edd16ae
1 changed files with 19 additions and 10 deletions
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29
drivers/mfd/db8500-prcmu.c
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@ -2960,7 +2960,8 @@ static struct mfd_cell db8500_prcmu_devs[] = {
*/
static int __devinit db8500_prcmu_probe(struct platform_device *pdev)
{
int err = 0;
struct device_node *np = pdev->dev.of_node;
int irq = 0, err = 0;
if (ux500_is_svp())
return -ENODEV;
@ -2970,8 +2971,14 @@ static int __devinit db8500_prcmu_probe(struct platform_device *pdev)
/* Clean up the mailbox interrupts after pre-kernel code. */
writel(ALL_MBOX_BITS, PRCM_ARM_IT1_CLR);
err = request_threaded_irq(IRQ_DB8500_PRCMU1, prcmu_irq_handler,
prcmu_irq_thread_fn, IRQF_NO_SUSPEND, "prcmu", NULL);
if (np)
irq = platform_get_irq(pdev, 0);
if (!np || irq <= 0)
irq = IRQ_DB8500_PRCMU1;
err = request_threaded_irq(irq, prcmu_irq_handler,
prcmu_irq_thread_fn, IRQF_NO_SUSPEND, "prcmu", NULL);
if (err < 0) {
pr_err("prcmu: Failed to allocate IRQ_DB8500_PRCMU1.\n");
err = -EBUSY;
@ -2981,14 +2988,16 @@ static int __devinit db8500_prcmu_probe(struct platform_device *pdev)
if (cpu_is_u8500v20_or_later())
prcmu_config_esram0_deep_sleep(ESRAM0_DEEP_SLEEP_STATE_RET);
err = mfd_add_devices(&pdev->dev, 0, db8500_prcmu_devs,
ARRAY_SIZE(db8500_prcmu_devs), NULL,
0);
if (!np) {
err = mfd_add_devices(&pdev->dev, 0, db8500_prcmu_devs,
ARRAY_SIZE(db8500_prcmu_devs), NULL, 0);
if (err) {
pr_err("prcmu: Failed to add subdevices\n");
return err;
}
}
if (err)
pr_err("prcmu: Failed to add subdevices\n");
else
pr_info("DB8500 PRCMU initialized\n");
pr_info("DB8500 PRCMU initialized\n");
no_irq_return:
return err;