V4L/DVB (13635): ir-core: Implement protocol table type reading

Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>

2 files changed, 31 insertions, 3 deletions

diff --git a/drivers/media/IR/ir-sysfs.c b/drivers/media/IR/ir-sysfs.c
index 3c601421632b..821345dbe7c9 100644
--- a/drivers/media/IR/ir-sysfs.c
+++ b/drivers/media/IR/ir-sysfs.c
@@ -22,10 +22,36 @@ unsigned long ir_core_dev_number;
 
 static struct class *ir_input_class;
 
-static DEVICE_ATTR(ir_protocol, S_IRUGO | S_IWUSR, NULL, NULL);
+
+static ssize_t show_protocol(struct device *d,
+                             struct device_attribute *mattr, char *buf)
+{
+        char *s;
+        struct ir_input_dev *ir_dev = dev_get_drvdata(d);
+        enum ir_type ir_type = ir_dev->rc_tab.ir_type;
+
+        IR_dprintk(1, "Current protocol is %ld\n", ir_type);
+
+        /* FIXME: doesn't support multiple protocols at the same time */
+        if (ir_type == IR_TYPE_UNKNOWN)
+                s = "Unknown";
+        else if (ir_type == IR_TYPE_RC5)
+                s = "RC-5";
+        else if (ir_type == IR_TYPE_PD)
+                s = "Pulse/distance";
+        else if (ir_type == IR_TYPE_NEC)
+                s = "NEC";
+        else
+                s = "Other";
+
+        return sprintf(buf, "%s\n", s);
+}
+
+static DEVICE_ATTR(current_protocol, S_IRUGO | S_IWUSR,
+                   show_protocol, NULL);
 
 static struct attribute *ir_dev_attrs[] = {
-        &dev_attr_ir_protocol.attr,
+        &dev_attr_current_protocol.attr,
 };
 
 int ir_register_class(struct input_dev *input_dev)
diff --git a/include/media/ir-core.h b/include/media/ir-core.h
index dbdffd1458fb..a6d07dede09f 100644
--- a/include/media/ir-core.h
+++ b/include/media/ir-core.h
@@ -44,9 +44,10 @@ struct ir_scancode_table {
 struct ir_dev_props {
         unsigned long allowed_protos;
         void            *priv;
-        int (*change_protocol)(void *priv, unsigned long protocol);
+        int (*change_protocol)(void *priv, enum ir_type ir_type);
 };
 
+
 struct ir_input_dev {
         struct input_dev                *dev;           /* Input device*/
         struct ir_scancode_table        rc_tab;         /* scan/key table */
@@ -55,6 +56,7 @@ struct ir_input_dev {
         struct device                   *class_dev;     /* virtual class dev */
         const struct ir_dev_props       *props;         /* Device properties */
 };
+#define to_ir_input_dev(_attr) container_of(_attr, struct ir_input_dev, attr)
 
 /* Routines from ir-keytable.c */