spmi: Add spmi_resource for non spmi-dev-container cases
The devnode array is currently being used for non
spmi-dev-container devices as a special case where the number of
devnodes is 1. This obfuscates the code and also removes the
ability to store the dev-container's device resource information,
since in that special case the devnode array is dedicated for the
child devices.
Add a new spmi_resource entry used for typical spmi_devices, and
treat the devnode array as the special case for
spmi-dev-container.
Also add a new API spmi_get_primary_dev_name() to return the name
of the device assigned with the 'label' binding if it exists.
Change-Id: Ibe7b12285e37bb0529024558550a96d71393bc10
Signed-off-by: Michael Bohan <mbohan@codeaurora.org>
diff --git a/include/linux/spmi.h b/include/linux/spmi.h
index 299d3de..f94b5c5 100644
--- a/include/linux/spmi.h
+++ b/include/linux/spmi.h
@@ -116,7 +116,8 @@
* @dev: Driver model representation of the device.
* @name: Name of driver to use with this device.
* @ctrl: SPMI controller managing the bus hosting this device.
- * @dev_node: array of SPMI resources - one entry per device_node.
+ * @res: SPMI resource for the primary node
+ * @dev_node: array of SPMI resources when used with spmi-dev-container.
* @num_dev_node: number of device_node structures.
* @sid: Slave Identifier.
*/
@@ -124,6 +125,7 @@
struct device dev;
const char *name;
struct spmi_controller *ctrl;
+ struct spmi_resource res;
struct spmi_resource *dev_node;
u32 num_dev_node;
u8 sid;
@@ -132,10 +134,12 @@
/**
* struct spmi_boardinfo: Declare board info for SPMI device bringup.
+ * @name: Name of driver to use with this device.
* @slave_id: slave identifier.
* @spmi_device: device to be registered with the SPMI framework.
* @of_node: pointer to the OpenFirmware device node.
- * @dev_node: one spmi_resource for each device_node.
+ * @res: SPMI resource for the primary node
+ * @dev_node: array of SPMI resources when used with spmi-dev-container.
* @num_dev_node: number of device_node structures.
* @platform_data: goes to spmi_device.dev.platform_data
*/
@@ -143,6 +147,7 @@
char name[SPMI_NAME_SIZE];
uint8_t slave_id;
struct device_node *of_node;
+ struct spmi_resource res;
struct spmi_resource *dev_node;
u32 num_dev_node;
const void *platform_data;
@@ -452,6 +457,22 @@
extern int spmi_get_irq_byname(struct spmi_device *dev,
struct spmi_resource *node, const char *name);
+/**
+ * spmi_get_node_name - return device name for spmi node
+ * @dev: spmi device handle
+ *
+ * Get the primary node name of a spmi_device coresponding with
+ * with the 'label' binding.
+ *
+ * Returns NULL if no primary dev name has been assigned to this spmi_device.
+ */
+static inline const char *spmi_get_primary_dev_name(struct spmi_device *dev)
+{
+ if (dev->res.label)
+ return dev->res.label;
+ return NULL;
+}
+
struct spmi_resource *spmi_get_dev_container_byname(struct spmi_device *dev,
const char *label);
#endif