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rtl8366s: reset the chip early, this allows ethernet to work as soon as possible

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SVN-Revision: 19355
This commit is contained in:
Gabor Juhos 2010-01-27 21:01:48 +00:00
parent 4e7fded1c4
commit 6bfdc7c998
1 changed files with 34 additions and 20 deletions
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54
target/linux/generic-2.6/files/drivers/net/phy/rtl8366s.c
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@ -26,7 +26,7 @@
#endif
#define RTL8366S_DRIVER_DESC "Realtek RTL8366S ethernet switch driver"
#define RTL8366S_DRIVER_VER "0.2.0"
#define RTL8366S_DRIVER_VER "0.2.1"
#define RTL8366S_PHY_NO_MAX 4
#define RTL8366S_PHY_PAGE_MAX 7
@ -230,6 +230,31 @@ static inline struct rtl8366s *sw_to_rtl8366s(struct switch_dev *sw)
return container_of(sw, struct rtl8366s, dev);
}
static int rtl8366s_reset_chip(struct rtl8366s *rtl)
{
struct rtl8366_smi *smi = &rtl->smi;
int timeout = 10;
u32 data;
rtl8366_smi_write_reg(smi, RTL8366_RESET_CTRL_REG,
RTL8366_CHIP_CTRL_RESET_HW);
do {
msleep(1);
if (rtl8366_smi_read_reg(smi, RTL8366_RESET_CTRL_REG, &data))
return -EIO;
if (!(data & RTL8366_CHIP_CTRL_RESET_HW))
break;
} while (--timeout);
if (!timeout) {
printk("Timeout waiting for the switch to reset\n");
return -EIO;
}
return 0;
}
static int rtl8366s_read_phy_reg(struct rtl8366s *rtl,
u32 phy_no, u32 page, u32 addr, u32 *data)
{
@ -1301,25 +1326,11 @@ static int rtl8366s_sw_set_port_pvid(struct switch_dev *dev, int port, int val)
static int rtl8366s_sw_reset_switch(struct switch_dev *dev)
{
struct rtl8366s *rtl = sw_to_rtl8366s(dev);
struct rtl8366_smi *smi = &rtl->smi;
int timeout = 10;
u32 data;
int err;
rtl8366_smi_write_reg(smi, RTL8366_RESET_CTRL_REG,
RTL8366_CHIP_CTRL_RESET_HW);
do {
msleep(1);
if (rtl8366_smi_read_reg(smi, RTL8366_RESET_CTRL_REG, &data))
return -EIO;
if (!(data & RTL8366_CHIP_CTRL_RESET_HW))
break;
} while (--timeout);
if (!timeout) {
printk("Timeout waiting for the switch to reset\n");
return -EIO;
}
err = rtl8366s_reset_chip(rtl);
if (err)
return err;
return rtl8366s_reset_vlan(rtl);
}
@ -1553,8 +1564,11 @@ static int rtl8366s_setup(struct rtl8366s *rtl)
dev_info(rtl->parent, "RTL%04x ver. %u chip found\n",
chip_id, chip_ver & RTL8366S_CHIP_VERSION_MASK);
rtl8366s_debugfs_init(rtl);
ret = rtl8366s_reset_chip(rtl);
if (ret)
return ret;
rtl8366s_debugfs_init(rtl);
return 0;
}