X-Git-Url: http://demsky.eecs.uci.edu/git/?a=blobdiff_plain;f=target%2Flinux%2Fgeneric%2Ffiles%2Fdrivers%2Fnet%2Fphy%2Frtl8366_smi.c;h=44074633e2a9e64babe1fdaa6e88ce9d581913fb;hb=d8678644f9b18f36bdd5e7825e09c65dfcd049dc;hp=9903269390e452a5279db68b8ab3ee029eb630bd;hpb=e2782eae8ee17143d0506078fcf5c0a44b2302fe;p=lede.git

diff --git a/target/linux/generic/files/drivers/net/phy/rtl8366_smi.c b/target/linux/generic/files/drivers/net/phy/rtl8366_smi.c
index 9903269390..44074633e2 100644
--- a/target/linux/generic/files/drivers/net/phy/rtl8366_smi.c
+++ b/target/linux/generic/files/drivers/net/phy/rtl8366_smi.c
@@ -15,6 +15,8 @@
 #include <linux/gpio.h>
 #include <linux/spinlock.h>
 #include <linux/skbuff.h>
+#include <linux/of_platform.h>
+#include <linux/of_gpio.h>
 #include <linux/rtl8366.h>
 
 #ifdef CONFIG_RTL8366_SMI_DEBUG_FS
@@ -25,6 +27,9 @@
 
 #define RTL8366_SMI_ACK_RETRY_COUNT         5
 
+#define RTL8366_SMI_HW_STOP_DELAY		25	/* msecs */
+#define RTL8366_SMI_HW_START_DELAY		100	/* msecs */
+
 static inline void rtl8366_smi_clk_delay(struct rtl8366_smi *smi)
 {
 	ndelay(smi->clk_delay);
@@ -312,9 +317,9 @@ static int rtl8366_reset(struct rtl8366_smi *smi)
 {
 	if (smi->hw_reset) {
 		smi->hw_reset(true);
-		msleep(25);
+		msleep(RTL8366_SMI_HW_STOP_DELAY);
 		smi->hw_reset(false);
-		msleep(25);
+		msleep(RTL8366_SMI_HW_START_DELAY);
 		return 0;
 	}
 
@@ -1244,7 +1249,7 @@ static int __rtl8366_smi_init(struct rtl8366_smi *smi, const char *name)
 	/* start the switch */
 	if (smi->hw_reset) {
 		smi->hw_reset(false);
-		msleep(25);
+		msleep(RTL8366_SMI_HW_START_DELAY);
 	}
 
 	return 0;
@@ -1367,6 +1372,71 @@ void rtl8366_smi_cleanup(struct rtl8366_smi *smi)
 }
 EXPORT_SYMBOL_GPL(rtl8366_smi_cleanup);
 
+#ifdef CONFIG_OF
+int rtl8366_smi_probe_of(struct platform_device *pdev, struct rtl8366_smi *smi)
+{
+	int sck = of_get_named_gpio(pdev->dev.of_node, "gpio-sck", 0);
+	int sda = of_get_named_gpio(pdev->dev.of_node, "gpio-sda", 0);
+
+	if (!sck || !sda) {
+		dev_err(&pdev->dev, "gpios missing in devictree\n");
+		return -EINVAL;
+	}
+
+	smi->gpio_sda = sda;
+	smi->gpio_sck = sck;
+
+	return 0;
+}
+#else
+static inline int rtl8366_smi_probe_of(struct device_node *np, struct rtl8366_smi *smi)
+{
+	return -ENODEV;
+}
+#endif
+
+int rtl8366_smi_probe_plat(struct platform_device *pdev, struct rtl8366_smi *smi)
+{
+	struct rtl8366_platform_data *pdata = pdev->dev.platform_data;
+
+	if (!pdev->dev.platform_data) {
+		dev_err(&pdev->dev, "no platform data specified\n");
+		return -EINVAL;
+	}
+
+	smi->gpio_sda = pdata->gpio_sda;
+	smi->gpio_sck = pdata->gpio_sck;
+	smi->hw_reset = pdata->hw_reset;
+
+	return 0;
+}
+
+
+struct rtl8366_smi *rtl8366_smi_probe(struct platform_device *pdev)
+{
+	struct rtl8366_smi *smi;
+	int err;
+
+	smi = rtl8366_smi_alloc(&pdev->dev);
+	if (!smi)
+		return NULL;
+
+	if (pdev->dev.of_node)
+		err = rtl8366_smi_probe_of(pdev, smi);
+	else
+		err = rtl8366_smi_probe_plat(pdev, smi);
+
+	if (err)
+		goto free_smi;
+
+	return smi;
+
+free_smi:
+	kfree(smi);
+	return NULL;
+}
+EXPORT_SYMBOL_GPL(rtl8366_smi_probe);
+
 MODULE_DESCRIPTION("Realtek RTL8366 SMI interface driver");
 MODULE_AUTHOR("Gabor Juhos <juhosg@openwrt.org>");
 MODULE_LICENSE("GPL v2");