forked from Minki/linux
net: phy: add phy_modify_paged_changed
Add helper function phy_modify_paged_changed, behavios is the same as for phy_modify_changed. Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
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@ -782,6 +782,29 @@ int phy_write_paged(struct phy_device *phydev, int page, u32 regnum, u16 val)
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}
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EXPORT_SYMBOL(phy_write_paged);
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/**
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* phy_modify_paged_changed() - Function for modifying a paged register
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* @phydev: a pointer to a &struct phy_device
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* @page: the page for the phy
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* @regnum: register number
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* @mask: bit mask of bits to clear
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* @set: bit mask of bits to set
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*
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* Returns negative errno, 0 if there was no change, and 1 in case of change
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*/
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int phy_modify_paged_changed(struct phy_device *phydev, int page, u32 regnum,
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u16 mask, u16 set)
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{
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int ret = 0, oldpage;
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oldpage = phy_select_page(phydev, page);
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if (oldpage >= 0)
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ret = __phy_modify_changed(phydev, regnum, mask, set);
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return phy_restore_page(phydev, oldpage, ret);
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}
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EXPORT_SYMBOL(phy_modify_paged_changed);
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/**
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* phy_modify_paged() - Convenience function for modifying a paged register
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* @phydev: a pointer to a &struct phy_device
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@ -795,12 +818,8 @@ EXPORT_SYMBOL(phy_write_paged);
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int phy_modify_paged(struct phy_device *phydev, int page, u32 regnum,
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u16 mask, u16 set)
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{
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int ret = 0, oldpage;
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int ret = phy_modify_paged_changed(phydev, page, regnum, mask, set);
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oldpage = phy_select_page(phydev, page);
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if (oldpage >= 0)
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ret = __phy_modify(phydev, regnum, mask, set);
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return phy_restore_page(phydev, oldpage, ret);
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return ret < 0 ? ret : 0;
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}
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EXPORT_SYMBOL(phy_modify_paged);
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@ -984,6 +984,8 @@ int phy_select_page(struct phy_device *phydev, int page);
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int phy_restore_page(struct phy_device *phydev, int oldpage, int ret);
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int phy_read_paged(struct phy_device *phydev, int page, u32 regnum);
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int phy_write_paged(struct phy_device *phydev, int page, u32 regnum, u16 val);
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int phy_modify_paged_changed(struct phy_device *phydev, int page, u32 regnum,
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u16 mask, u16 set);
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int phy_modify_paged(struct phy_device *phydev, int page, u32 regnum,
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u16 mask, u16 set);
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