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authorMartin Fuzzey <martin.fuzzey@flowbird.group>2020-04-02 15:51:27 +0200
committerDavid S. Miller <davem@davemloft.net>2020-04-07 18:23:37 -0700
commitda722186f6549d752ea5b5fbc18111833c81a133 (patch)
tree89bab2944dc6d1767466f03c7e9d15e7a76f8ee8 /drivers/net/ethernet/freescale/fec.h
parent045065f06f938d3171b3ffacb34453421a32c1e3 (diff)
net: fec: set GPR bit on suspend by DT configuration.
On some SoCs, such as the i.MX6, it is necessary to set a bit in the SoC level GPR register before suspending for wake on lan to work. The fec platform callback sleep_mode_enable was intended to allow this but the platform implementation was NAK'd back in 2015 [1] This means that, currently, wake on lan is broken on mainline for the i.MX6 at least. So implement the required bit setting in the fec driver by itself by adding a new optional DT property indicating the GPR register and adding the offset and bit information to the driver. [1] https://www.spinics.net/lists/netdev/msg310922.html Signed-off-by: Martin Fuzzey <martin.fuzzey@flowbird.group> Signed-off-by: Fugang Duan <fugang.duan@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/freescale/fec.h')
-rw-r--r--drivers/net/ethernet/freescale/fec.h7
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/net/ethernet/freescale/fec.h b/drivers/net/ethernet/freescale/fec.h
index bd898f5b4da5..e74dd1f86bba 100644
--- a/drivers/net/ethernet/freescale/fec.h
+++ b/drivers/net/ethernet/freescale/fec.h
@@ -488,6 +488,12 @@ struct fec_enet_priv_rx_q {
struct sk_buff *rx_skbuff[RX_RING_SIZE];
};
+struct fec_stop_mode_gpr {
+ struct regmap *gpr;
+ u8 reg;
+ u8 bit;
+};
+
/* The FEC buffer descriptors track the ring buffers. The rx_bd_base and
* tx_bd_base always point to the base of the buffer descriptors. The
* cur_rx and cur_tx point to the currently available buffer.
@@ -562,6 +568,7 @@ struct fec_enet_private {
int hwts_tx_en;
struct delayed_work time_keep;
struct regulator *reg_phy;
+ struct fec_stop_mode_gpr stop_gpr;
unsigned int tx_align;
unsigned int rx_align;