[PATCHv3 3/5] fwu: gpt: implement read_mdata and write_mdata callbacks

[Jassi Brar]

Moving towards using common code for meta-data management,
implement the read/write mdata hooks.

Signed-off-by: Jassi Brar <jaswinder.singh at linaro.org>
Reviewed-by: Etienne Carriere <etienne.carriere at linaro.org>
Reviewed-by: Ilias Apalodimas <ilias.apalodimas at linaro.org>
---
 drivers/fwu-mdata/gpt_blk.c | 36 ++++++++++++++++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/drivers/fwu-mdata/gpt_blk.c b/drivers/fwu-mdata/gpt_blk.c
index 28f5d23e1e..bdaa10cd1d 100644
--- a/drivers/fwu-mdata/gpt_blk.c
+++ b/drivers/fwu-mdata/gpt_blk.c
@@ -272,7 +272,43 @@ static int fwu_mdata_gpt_blk_probe(struct udevice *dev)
 	return 0;
 }
 
+static int fwu_gpt_read_mdata(struct udevice *dev, struct fwu_mdata *mdata,
+						 bool primary)
+{
+	struct fwu_mdata_gpt_blk_priv *priv = dev_get_priv(dev);
+	struct blk_desc *desc = dev_get_uclass_plat(priv->blk_dev);
+	int ret;
+
+	ret = gpt_get_mdata_partitions(desc);
+	if (ret < 0) {
+		log_debug("Error getting the FWU metadata partitions\n");
+		return -ENOENT;
+	}
+
+	return gpt_read_write_mdata(desc, mdata, MDATA_READ,
+                                primary ? g_mdata_part[0] : g_mdata_part[1]);
+}
+
+static int fwu_gpt_write_mdata(struct udevice *dev, struct fwu_mdata *mdata,
+						 bool primary)
+{
+	struct fwu_mdata_gpt_blk_priv *priv = dev_get_priv(dev);
+	struct blk_desc *desc = dev_get_uclass_plat(priv->blk_dev);
+	int ret;
+
+	ret = gpt_get_mdata_partitions(desc);
+	if (ret < 0) {
+		log_debug("Error getting the FWU metadata partitions\n");
+		return -ENOENT;
+	}
+
+	return gpt_read_write_mdata(desc, mdata, MDATA_WRITE,
+                                primary ? g_mdata_part[0] : g_mdata_part[1]);
+}
+
 static const struct fwu_mdata_ops fwu_gpt_blk_ops = {
+	.read_mdata = fwu_gpt_read_mdata,
+	.write_mdata = fwu_gpt_write_mdata,
 	.get_mdata = fwu_gpt_get_mdata,
 	.update_mdata = fwu_gpt_update_mdata,
 	.get_mdata_part_num = fwu_gpt_get_mdata_partitions,
-- 
2.34.1