[PATCH 20/45] mci: Allow parsing for explicit DT node

[Andrey Smirnov]

Convert mci_of_parse into mci_of_parse_node, a function that takes
explicit deivce tree node pointer to be used for SD/MMC related
properties extraction. Implement original mci_of_parse as a wrapper
around the call to new function.

This is useful for controllers who specify parameter like bus witdth and
GPIOs as a part of main controller's child nodes (e.g. AT91 SoCs).

Signed-off-by: Andrey Smirnov <andrew.smirnov at gmail.com>
---
 drivers/mci/mci-core.c | 13 ++++++++-----
 include/mci.h          |  1 +
 2 files changed, 9 insertions(+), 5 deletions(-)

diff --git a/drivers/mci/mci-core.c b/drivers/mci/mci-core.c
index 055a5e2..928277a 100644
--- a/drivers/mci/mci-core.c
+++ b/drivers/mci/mci-core.c
@@ -1843,20 +1843,18 @@ err_free:
 	return ret;
 }
 
-void mci_of_parse(struct mci_host *host)
+void mci_of_parse_node(struct mci_host *host,
+		       struct device_node *np)
 {
-	struct device_node *np;
 	u32 bus_width;
 	u32 dsr_val;
 
 	if (!IS_ENABLED(CONFIG_OFDEVICE))
 		return;
 
-	if (!host->hw_dev || !host->hw_dev->device_node)
+	if (!host->hw_dev || !np)
 		return;
 
-	np = host->hw_dev->device_node;
-
 	/* "bus-width" is translated to MMC_CAP_*_BIT_DATA flags */
 	if (of_property_read_u32(np, "bus-width", &bus_width) < 0) {
 		/* If bus-width is missing we get the driver's default, which
@@ -1897,6 +1895,11 @@ void mci_of_parse(struct mci_host *host)
 	host->non_removable = of_property_read_bool(np, "non-removable");
 }
 
+void mci_of_parse(struct mci_host *host)
+{
+	return mci_of_parse_node(host, host->hw_dev->device_node);
+}
+
 struct mci *mci_get_device_by_name(const char *name)
 {
 	struct mci *mci;
diff --git a/include/mci.h b/include/mci.h
index cc4712c..781e6e0 100644
--- a/include/mci.h
+++ b/include/mci.h
@@ -480,6 +480,7 @@ struct mci {
 
 int mci_register(struct mci_host*);
 void mci_of_parse(struct mci_host *host);
+void mci_of_parse_node(struct mci_host *host, struct device_node *np);
 int mci_detect_card(struct mci_host *);
 int mci_send_ext_csd(struct mci *mci, char *ext_csd);
 int mci_switch(struct mci *mci, unsigned set, unsigned index,
-- 
2.9.3