[PATCH net-next v4 0/8] r8152: refactor and extend RTL8157/8159 support

[Chih Kai Hsu <hsu.chih.kai@realtek.com>]

RTL8157 and RTL8159 have different init, enable, up/down, hw_phy_cfg,
and PHY access sequences from RTL8156.  This series splits the shared
callbacks into per-chip variants and adds the missing RTL8157/8159
functionality: dedicated unload and change_mtu callbacks, TGPHY register
access via phy_read/phy_write pointers in struct rtl_ops, flow control
patch support through rtl_fc_pause_pkt_en(), and UPS support via
r8157_ups_en().

v4:
- Patch #1: make wait_autoload_done() bail out immediately on
  RTL8152_INACCESSIBLE instead of waiting out the full 10 second
  timeout.
- Patch #6: propagate PHY access failures instead of ignoring them.
  ocp_reg_read()/ocp_reg_write() and every helper built on top of them
  (sram_read/write, sram2_read/write, the ocp_reg_*_bits and MDIO bit
  helpers) now return int and stop silently operating on stale data
  when a TGPHY access times out.

v3:
Rebase on top of latest net-next to resolve merge conflicts.

v2:
- For patch #1, use read_poll_timeout() to replace the manual
  for-loop polling.
- For patch #2 and #3, rewrite the commit message.

v1:
RTL8157 and RTL8159 have different init, enable, up/down, hw_phy_cfg,
and PHY access sequences from RTL8156.  This series splits the shared
callbacks into per-chip variants and adds the missing RTL8157/8159
functionality: dedicated unload and change_mtu callbacks, TGPHY register
access via phy_read/phy_write pointers in struct rtl_ops, flow control
patch support through rtl_fc_pause_pkt_en(), and UPS support via
r8157_ups_en().

Chih Kai Hsu (8):
  r8152: split r8156_init per chip and add missing init writes
  r8152: split RTL_VER_17 into QFN68 and QFN100 package variants
  r8152: split rtl8156_enable/up/down into per-chip-family functions
  r8152: split r8157_hw_phy_cfg into RTL8157 and RTL8159 variants
  r8152: add rtl8157_unload and rtl8157_change_mtu
  r8152: add TGPHY register access for RTL8157 and RTL8159
  r8152: extract rtl_fc_pause_pkt_en() and apply it to RTL8156/8157/8159
  r8152: enable UPS for RTL8157 and RTL8159 QFN68

 drivers/net/usb/r8152.c | 1655 ++++++++++++++++++++++++++++++---------
 1 file changed, 1306 insertions(+), 349 deletions(-)

-- 
2.34.1