make rtl8366 driver OF capable

[lede.git] / target / linux / generic / files / drivers / net / phy / rtl8366_smi.c

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 9903269390e452a5279db68b8ab3ee029eb630bd..44074633e2a9e64babe1fdaa6e88ce9d581913fb 100644 (file)
--- 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");