From: Srinivas Kandagatla srinivas.kandagatla@linaro.org
This patch adds support to parse slim devices from device tree.
Signed-off-by: Srinivas Kandagatla srinivas.kandagatla@linaro.org --- drivers/slimbus/core.c | 50 ++++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 50 insertions(+)
diff --git a/drivers/slimbus/core.c b/drivers/slimbus/core.c index ed53ae6bd1cc..1accb20ed5cd 100644 --- a/drivers/slimbus/core.c +++ b/drivers/slimbus/core.c @@ -8,6 +8,7 @@ #include <linux/slab.h> #include <linux/init.h> #include <linux/idr.h> +#include <linux/of.h> #include <linux/slimbus.h> #include "slimbus.h"
@@ -113,6 +114,9 @@ static int slim_add_device(struct slim_controller *ctrl, sbdev->dev.driver = NULL; sbdev->ctrl = ctrl;
+ if (node) + sbdev->dev.of_node = of_node_get(node); + dev_set_name(&sbdev->dev, "%x:%x:%x:%x", sbdev->e_addr.manf_id, sbdev->e_addr.prod_code, @@ -143,6 +147,50 @@ static struct slim_device *slim_alloc_device(struct slim_controller *ctrl, return sbdev; }
+static void of_register_slim_devices(struct slim_controller *ctrl) +{ + struct device *dev = ctrl->dev; + struct device_node *node; + + if (!ctrl->dev->of_node) + return; + + for_each_child_of_node(ctrl->dev->of_node, node) { + struct slim_device *sbdev; + struct slim_eaddr e_addr; + const char *compat = NULL; + int reg[2], ret; + int manf_id, prod_code; + + compat = of_get_property(node, "compatible", NULL); + if (!compat) + continue; + + ret = sscanf(compat, "slim%x,%x", &manf_id, &prod_code); + if (ret != 2) { + dev_err(dev, "Manf ID & Product code not found %s\n", + compat); + continue; + } + + ret = of_property_read_u32_array(node, "reg", reg, 2); + if (ret) { + dev_err(dev, "Device and Instance id not found:%d\n", + ret); + continue; + } + + e_addr.dev_index = reg[0]; + e_addr.instance = reg[1]; + e_addr.manf_id = manf_id; + e_addr.prod_code = prod_code; + + sbdev = slim_alloc_device(ctrl, &e_addr, node); + if (!sbdev) + continue; + } +} + /* * slim_register_controller() - Controller bring-up and registration. * @@ -174,6 +222,8 @@ int slim_register_controller(struct slim_controller *ctrl) dev_dbg(ctrl->dev, "Bus [%s] registered:dev:%p\n", ctrl->name, ctrl->dev);
+ of_register_slim_devices(ctrl); + return 0; } EXPORT_SYMBOL_GPL(slim_register_controller);