+ spin_lock_init(&smi->lock);
+ return 0;
+
+ err_free_sda:
+ gpio_free(smi->gpio_sda);
+ err_out:
+ return err;
+}
+
+static void __rtl8366_smi_cleanup(struct rtl8366_smi *smi)
+{
+ gpio_free(smi->gpio_sck);
+ gpio_free(smi->gpio_sda);
+}
+
+enum rtl8366_type rtl8366_smi_detect(struct rtl8366_platform_data *pdata)
+{
+ static struct rtl8366_smi smi;
+ enum rtl8366_type type = RTL8366_TYPE_UNKNOWN;
+ u32 reg = 0;
+
+ memset(&smi, 0, sizeof(smi));
+ smi.gpio_sda = pdata->gpio_sda;
+ smi.gpio_sck = pdata->gpio_sck;
+
+ if (__rtl8366_smi_init(&smi, "rtl8366"))
+ goto out;
+
+ if (rtl8366_smi_read_reg(&smi, 0x5c, ®))
+ goto cleanup;
+
+ switch(reg) {
+ case 0x6027:
+ printk("Found an RTL8366S switch\n");
+ type = RTL8366_TYPE_S;
+ break;
+ case 0x5937:
+ printk("Found an RTL8366RB switch\n");
+ type = RTL8366_TYPE_RB;
+ break;
+ default:
+ printk("Found an Unknown RTL8366 switch (id=0x%04x)\n", reg);
+ break;
+ }
+
+cleanup:
+ __rtl8366_smi_cleanup(&smi);
+out:
+ return type;
+}
+
+int rtl8366_smi_init(struct rtl8366_smi *smi)
+{
+ int err;
+
+ if (!smi->ops)
+ return -EINVAL;
+
+ err = __rtl8366_smi_init(smi, dev_name(smi->parent));
+ if (err)
+ goto err_out;
+