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generic: rtl8366: add rtl8366_smi_write_reg_noack helper
After issuing a soft reset on the RT8366{S,RB} switch, waiting for the last acknowlegement fails in rtl8366_smi_write_reg. Add a _noack version of the function and use that for issuing a soft reset. git-svn-id: svn://svn.openwrt.org/openwrt/trunk@29844 3c298f89-4303-0410-b956-a3cf2f4a3e73
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@ -157,6 +157,12 @@ static int rtl8366_smi_write_byte(struct rtl8366_smi *smi, u8 data)
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return rtl8366_smi_wait_for_ack(smi);
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}
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static int rtl8366_smi_write_byte_noack(struct rtl8366_smi *smi, u8 data)
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{
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rtl8366_smi_write_bits(smi, data, 8);
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return 0;
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}
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static int rtl8366_smi_read_byte0(struct rtl8366_smi *smi, u8 *data)
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{
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u32 t;
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@ -228,7 +234,8 @@ int rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data)
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}
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EXPORT_SYMBOL_GPL(rtl8366_smi_read_reg);
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int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
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static int __rtl8366_smi_write_reg(struct rtl8366_smi *smi,
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u32 addr, u32 data, bool ack)
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{
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unsigned long flags;
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int ret;
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@ -258,7 +265,10 @@ int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
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goto out;
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/* write DATA[15:8] */
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if (ack)
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ret = rtl8366_smi_write_byte(smi, data >> 8);
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else
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ret = rtl8366_smi_write_byte_noack(smi, data >> 8);
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if (ret)
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goto out;
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@ -270,8 +280,19 @@ int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
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return ret;
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}
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int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data)
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{
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return __rtl8366_smi_write_reg(smi, addr, data, true);
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}
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EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg);
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int rtl8366_smi_write_reg_noack(struct rtl8366_smi *smi, u32 addr, u32 data)
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{
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return __rtl8366_smi_write_reg(smi, addr, data, false);
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}
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EXPORT_SYMBOL_GPL(rtl8366_smi_write_reg_noack);
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int rtl8366_smi_rmwr(struct rtl8366_smi *smi, u32 addr, u32 mask, u32 data)
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{
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u32 t;
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@ -103,6 +103,7 @@ struct rtl8366_smi *rtl8366_smi_alloc(struct device *parent);
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int rtl8366_smi_init(struct rtl8366_smi *smi);
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void rtl8366_smi_cleanup(struct rtl8366_smi *smi);
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int rtl8366_smi_write_reg(struct rtl8366_smi *smi, u32 addr, u32 data);
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int rtl8366_smi_write_reg_noack(struct rtl8366_smi *smi, u32 addr, u32 data);
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int rtl8366_smi_read_reg(struct rtl8366_smi *smi, u32 addr, u32 *data);
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int rtl8366_smi_rmwr(struct rtl8366_smi *smi, u32 addr, u32 mask, u32 data);
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@ -246,7 +246,7 @@ static int rtl8366rb_reset_chip(struct rtl8366_smi *smi)
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int timeout = 10;
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u32 data;
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rtl8366_smi_write_reg(smi, RTL8366RB_RESET_CTRL_REG,
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rtl8366_smi_write_reg_noack(smi, RTL8366RB_RESET_CTRL_REG,
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RTL8366RB_CHIP_CTRL_RESET_HW);
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do {
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msleep(1);
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@ -229,7 +229,7 @@ static int rtl8366s_reset_chip(struct rtl8366_smi *smi)
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int timeout = 10;
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u32 data;
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rtl8366_smi_write_reg(smi, RTL8366S_RESET_CTRL_REG,
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rtl8366_smi_write_reg_noack(smi, RTL8366S_RESET_CTRL_REG,
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RTL8366S_CHIP_CTRL_RESET_HW);
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do {
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msleep(1);
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