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>
diff --git a/drivers/mfd/db8500-prcmu.c b/drivers/mfd/db8500-prcmu.c
index 79a79ae..e6f8d261 100644
--- a/drivers/mfd/db8500-prcmu.c
+++ b/drivers/mfd/db8500-prcmu.c
@@ -2960,7 +2960,8 @@
*/
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 @@
/* 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 @@
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;