Define dt bindings for the ti-omap-hsmmc, and adapt
the driver to extract data (which was earlier passed as
platform_data) from device tree.

Signed-off-by: Rajendra Nayak <redacted>
---
 .../devicetree/bindings/mmc/ti-omap-hsmmc.txt      |   31 +++++++++
 drivers/mmc/host/omap_hsmmc.c                      |   68 ++++++++++++++++++++
 2 files changed, 99 insertions(+), 0 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt

diff --git a/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt b/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt
new file mode 100644
index 0000000..e4fa8f0
--- /dev/null
+++ b/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt

@@ -0,0 +1,31 @@
+* TI Highspeed MMC host controller for OMAP
+
+The Highspeed MMC Host Controller on TI OMAP family
+provides an interface for MMC, SD, and SDIO types of memory cards.
+
+Required properties:
+- compatible:
+ Should be "ti,omap2-hsmmc", for OMAP2/3 controllers
+ Should be "ti,omap4-hsmmc", for OMAP4 controllers
+- ti,hwmods: Must be "mmc<n>", n is controller instance starting 1
+- reg : should contain hsmmc registers location and length
+
+Optional properties:
+ti,dual-volt: boolean, supports dual voltage cards
+<supply-name>-supply: phandle to the regulator device tree node
+"supply-name" examples are "vmmc", "vmmc_aux" etc
+ti,bus-width: Number of data lines, default assumed is 1 if the property is missing.
+cd-gpios: GPIOs for card detection
+wp-gpios: GPIOs for write protection
+ti,non-removable: non-removable slot (like eMMC)

+
 static int __init omap_hsmmc_probe(struct platform_device *pdev)
 {
 	struct omap_mmc_platform_data *pdata = pdev->dev.platform_data;

@@ -1725,6 +1768,14 @@ static int __init omap_hsmmc_probe(struct platform_device *pdev)
 	struct omap_hsmmc_host *host = NULL;
 	struct resource *res;
 	int ret, irq;
+	const struct of_device_id *match;
+
+	match = of_match_device(omap_mmc_of_match, &pdev->dev);
+	if (match) {
+		pdata = of_get_hsmmc_pdata(&pdev->dev);
+		if (match->data)
+			pdata->reg_offset = *(u16 *)match->data;

+	}
 
 	if (pdata == NULL) {
 		dev_err(&pdev->dev, "Platform Data is missing\n");

@@ -2120,12 +2171,29 @@ static struct dev_pm_ops omap_hsmmc_dev_pm_ops = {
 	.runtime_resume = omap_hsmmc_runtime_resume,
 };
 
+#if defined(CONFIG_OF)
+static u16 omap4_reg_offset = 0x100;
+
+static const struct of_device_id omap_mmc_of_match[] = {
+	{
+		.compatible = "ti,omap2-hsmmc",
+	},
+	{
+		.compatible = "ti,omap4-hsmmc",
+		.data = &omap4_reg_offset,
+	},
+	{},
+}
+MODULE_DEVICE_TABLE(of, omap_mmc_of_match);
+#endif
+
 static struct platform_driver omap_hsmmc_driver = {
 	.remove		= omap_hsmmc_remove,
 	.driver		= {
 		.name = DRIVER_NAME,
 		.owner = THIS_MODULE,
 		.pm = &omap_hsmmc_dev_pm_ops,
+		.of_match_table = of_match_ptr(omap_mmc_of_match),
 	},
 };
 

-- 
1.7.1


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