ar71xx: reclaim the 'user_property' partition on WHR-* boards

[openwrt.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 f9a332d..e48ca99 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 +15,7 @@
 #include <linux/gpio.h>
 #include <linux/spinlock.h>
 #include <linux/skbuff.h>
+#include <linux/rtl8366.h>
 
 #ifdef CONFIG_RTL8366S_PHY_DEBUG_FS
 #include <linux/debugfs.h>
@@ -23,11 +24,10 @@
 #include "rtl8366_smi.h"
 
 #define RTL8366_SMI_ACK_RETRY_COUNT         5
-#define RTL8366_SMI_CLK_DELAY               10 /* nsec */
 
 static inline void rtl8366_smi_clk_delay(struct rtl8366_smi *smi)
 {
-       ndelay(RTL8366_SMI_CLK_DELAY);
+       ndelay(smi->clk_delay);
 }
 
 static void rtl8366_smi_start(struct rtl8366_smi *smi)
@@ -142,8 +142,10 @@ static int rtl8366_smi_wait_for_ack(struct rtl8366_smi *smi)
                if (ack == 0)
                        break;
 
-               if (++retry_cnt > RTL8366_SMI_ACK_RETRY_COUNT)
-                       return -EIO;
+               if (++retry_cnt > RTL8366_SMI_ACK_RETRY_COUNT) {
+                       dev_err(smi->parent, "ACK timeout\n");
+                       return -ETIMEDOUT;
+               }
        } while (1);
 
        return 0;
@@ -155,6 +157,12 @@ static int rtl8366_smi_write_byte(struct rtl8366_smi *smi, u8 data)
        return rtl8366_smi_wait_for_ack(smi);
 }
 
+static int rtl8366_smi_write_byte_noack(struct rtl8366_smi *smi, u8 data)
+{
+       rtl8366_smi_write_bits(smi, data, 8);
+       return 0;
+}
+
 static int rtl8366_smi_read_byte0(struct rtl8366_smi *smi, u8 *data)
 {
        u32 t;
@@ -195,7 +203,7 @@ int rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
        rtl8366_smi_start(smi);
 
        /* send READ command */
-       ret = rtl8366_smi_write_byte(smi, 0x0a << 4 | 0x04 << 1 | 0x01);
+       ret = rtl8366_smi_write_byte(smi, smi->cmd_read);
        if (ret)
                goto out;
 
@@ -226,7 +234,8 @@ int rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
 }
 EXPORT_SYMBOL_GPL(rtl8366_smi_read_reg);
 
-int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
+static int __rtl8366_smi_write_reg(struct rtl8366_smi *smi,
+                                  u32 addr, u32 data, bool ack)
 {
        unsigned long flags;
        int ret;
@@ -236,7 +245,7 @@ int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
        rtl8366_smi_start(smi);
 
        /* send WRITE command */
-       ret = rtl8366_smi_write_byte(smi, 0x0a << 4 | 0x04 << 1 | 0x00);
+       ret = rtl8366_smi_write_byte(smi, smi->cmd_write);
        if (ret)
                goto out;
 
@@ -256,7 +265,10 @@ int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
                goto out;
 
        /* write DATA[15:8] */
-       ret = rtl8366_smi_write_byte(smi, data >> 8);
+       if (ack)
+               ret = rtl8366_smi_write_byte(smi, data >> 8);
+       else
+               ret = rtl8366_smi_write_byte_noack(smi, data >> 8);
        if (ret)
                goto out;
 
@@ -268,8 +280,19 @@ int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
 
        return ret;
 }
+
+int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
+{
+       return __rtl8366_smi_write_reg(smi, addr, data, true);
+}
 EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg);
 
+int rtl8366_smi_write_reg_noack(struct rtl8366_smi *smi, u32 addr, u32 data)
+{
+       return __rtl8366_smi_write_reg(smi, addr, data, false);
+}
+EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg_noack);
+
 int rtl8366_smi_rmwr(struct rtl8366_smi *smi, u32 addr, u32 mask, u32 data)
 {
        u32 t;
@@ -448,7 +471,7 @@ static int rtl8366_set_pvid(struct rtl8366_smi *smi, unsigned port,
        return -ENOSPC;
 }
 
-static int rtl8366_enable_vlan(struct rtl8366_smi *smi, int enable)
+int rtl8366_enable_vlan(struct rtl8366_smi *smi, int enable)
 {
        int err;
 
@@ -465,6 +488,7 @@ static int rtl8366_enable_vlan(struct rtl8366_smi *smi, int enable)
 
        return err;
 }
+EXPORT_SYMBOL_GPL(rtl8366_enable_vlan);
 
 static int rtl8366_enable_vlan4k(struct rtl8366_smi *smi, int enable)
 {
@@ -1159,27 +1183,89 @@ struct rtl8366_smi *rtl8366_smi_alloc(struct device *parent)
 }
 EXPORT_SYMBOL_GPL(rtl8366_smi_alloc);
 
-int rtl8366_smi_init(struct rtl8366_smi *smi)
+static int __rtl8366_smi_init(struct rtl8366_smi *smi, const char *name)
 {
        int err;
 
-       if (!smi->ops)
-               return -EINVAL;
-
-       err = gpio_request(smi->gpio_sda, dev_name(smi->parent));
+       err = gpio_request(smi->gpio_sda, name);
        if (err) {
-               dev_err(smi->parent, "gpio_request failed for %u, err=%d\n",
+               printk(KERN_ERR "rtl8366_smi: gpio_request failed for %u, err=%d\n",
                        smi->gpio_sda, err);
                goto err_out;
        }
 
-       err = gpio_request(smi->gpio_sck, dev_name(smi->parent));
+       err = gpio_request(smi->gpio_sck, name);
        if (err) {
-               dev_err(smi->parent, "gpio_request failed for %u, err=%d\n",
+               printk(KERN_ERR "rtl8366_smi: gpio_request failed for %u, err=%d\n",
                        smi->gpio_sck, err);
                goto err_free_sda;
        }
 
+       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;
+       smi.clk_delay = 10;
+       smi.cmd_read  = 0xa9;
+       smi.cmd_write = 0xa8;
+
+       if (__rtl8366_smi_init(&smi, "rtl8366"))
+               goto out;
+
+       if (rtl8366_smi_read_reg(&smi, 0x5c, &reg))
+               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;
+
        spin_lock_init(&smi->lock);
 
        dev_info(smi->parent, "using GPIO pins %u (SDA) and %u (SCK)\n",
@@ -1201,12 +1287,12 @@ int rtl8366_smi_init(struct rtl8366_smi *smi)
        if (err) {
                dev_err(smi->parent, "VLAN initialization failed, err=%d\n",
                        err);
-               goto err_disable_hw;
+               goto err_free_sck;
        }
 
        err = rtl8366_enable_all_ports(smi, 1);
        if (err)
-               goto err_disable_hw;
+               goto err_free_sck;
 
        err = rtl8366_smi_mii_init(smi);
        if (err)
@@ -1217,9 +1303,7 @@ int rtl8366_smi_init(struct rtl8366_smi *smi)
        return 0;
 
  err_free_sck:
-       gpio_free(smi->gpio_sck);
- err_free_sda:
-       gpio_free(smi->gpio_sda);
+       __rtl8366_smi_cleanup(smi);
  err_out:
        return err;
 }