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authorLee Jones <lee.jones@linaro.org>2012-05-09 17:19:25 +0200
committerSamuel Ortiz <sameo@linux.intel.com>2012-05-09 17:19:25 +0200
commitca7edd16ae488fe0eff5d4f8eb17c5caa8dcc5fa (patch)
tree969f7466567a7147f25289018aa80cc1a16cdbc1
parent9fc63f670f53cf9dcdca5e523289dda35da47e63 (diff)
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>
-rw-r--r--drivers/mfd/db8500-prcmu.c29
1 files changed, 19 insertions, 10 deletions
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index 79a79ae6fc25..e6f8d261eeba 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -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;