[PATCH v3 3/4] drivers: mci: Add mci_get_device_by_name function

[Daniel Schultz <d.schultz@phytec.de>]

Get a 'struct mci' by search after the device name.

Signed-off-by: Daniel Schultz <d.schultz@phytec.de>
---

Changes:
	v3:
	New with patch v3

 drivers/mci/mci-core.c | 16 ++++++++++++++++
 include/mci.h          |  8 ++++++++
 2 files changed, 24 insertions(+)

diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c
index c22f932..d6865d1 100644
--- a/drivers/mci/mci-core.c
+++ b/drivers/mci/mci-core.c
@@ -53,6 +53,8 @@
 		__res & __mask;						\
 	})
 
+LIST_HEAD(mci_list);
+
 /**
  * @file
  * @brief Memory Card framework
@@ -1753,6 +1755,8 @@ int mci_register(struct mci_host *host)
 		mci->dev.id = DEVICE_ID_DYNAMIC;
 	}
 
+	list_add_tail(&mci->list, &mci_list);
+
 	mci->dev.platform_data = host;
 	mci->dev.parent = host->hw_dev;
 	mci->host = host;
@@ -1844,3 +1848,15 @@ void mci_of_parse(struct mci_host *host)
 
 	host->non_removable = of_property_read_bool(np, "non-removable");
 }
+
+struct mci *mci_get_device_by_name(const char *name)
+{
+	struct mci *dev;
+
+	for_each_mci_device(dev) {
+		if (!strcmp(dev->cdevname, name))
+			return dev;
+	}
+
+	return NULL;
+}
diff --git a/include/mci.h b/include/mci.h
index 9e4d18b..3c7b407 100644
--- a/include/mci.h
+++ b/include/mci.h
@@ -466,6 +466,8 @@ struct mci {
 
 	struct mci_part *part_curr;
 	u8 ext_csd_part_config;
+
+	struct list_head list;     /* The list of all mci devices */
 };
 
 int mci_register(struct mci_host*);
@@ -483,4 +485,10 @@ static inline int mmc_host_is_spi(struct mci_host *host)
 		return 0;
 }
 
+/* Iterate over all mci devices
+ */
+#define for_each_mci_device(dev) list_for_each_entry(dev, &mci_list, list)
+
+struct mci *mci_get_device_by_name(const char *name);
+
 #endif /* _MCI_H_ */
-- 
1.9.1


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