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authorGrygorii Strashko <grygorii.strashko@ti.com>2014-05-20 13:42:02 +0300
committerGrant Likely <grant.likely@linaro.org>2014-05-23 11:40:25 +0900
commitad69674e73a18dc3a8da557f4059ccf9389531a5 (patch)
treef93c7f4cbcc191d6924fedfcef26af76063032c0 /drivers/of/irq.c
parentae91ff72e9132abe47f726424d9420fce004ca04 (diff)
downloadop-kernel-dev-ad69674e73a18dc3a8da557f4059ccf9389531a5.zip
op-kernel-dev-ad69674e73a18dc3a8da557f4059ccf9389531a5.tar.gz
of/irq: do irq resolution in platform_get_irq_byname()
The commit 9ec36cafe43bf835f8f29273597a5b0cbc8267ef "of/irq: do irq resolution in platform_get_irq" from Rob Herring - moves resolving of the interrupt resources in platform_get_irq(). But this solution isn't complete because platform_get_irq_byname() need to be modified the same way. Hence, fix it by adding interrupt resolution code at the platform_get_irq_byname() function too. Cc: Russell King <linux@arm.linux.org.uk> Cc: Rob Herring <robh@kernel.org> Cc: Tony Lindgren <tony@atomide.com> Cc: Grant Likely <grant.likely@linaro.org> Cc: Thierry Reding <thierry.reding@gmail.com> Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> Signed-off-by: Grant Likely <grant.likely@linaro.org>
Diffstat (limited to 'drivers/of/irq.c')
-rw-r--r--drivers/of/irq.c22
1 files changed, 22 insertions, 0 deletions
diff --git a/drivers/of/irq.c b/drivers/of/irq.c
index 5aeb894..3e06a69 100644
--- a/drivers/of/irq.c
+++ b/drivers/of/irq.c
@@ -406,6 +406,28 @@ int of_irq_get(struct device_node *dev, int index)
}
/**
+ * of_irq_get_byname - Decode a node's IRQ and return it as a Linux irq number
+ * @dev: pointer to device tree node
+ * @name: irq name
+ *
+ * Returns Linux irq number on success, or -EPROBE_DEFER if the irq domain
+ * is not yet created, or error code in case of any other failure.
+ */
+int of_irq_get_byname(struct device_node *dev, const char *name)
+{
+ int index;
+
+ if (unlikely(!name))
+ return -EINVAL;
+
+ index = of_property_match_string(dev, "interrupt-names", name);
+ if (index < 0)
+ return index;
+
+ return of_irq_get(dev, index);
+}
+
+/**
* of_irq_count - Count the number of IRQs a node uses
* @dev: pointer to device tree node
*/
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