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c6ddf8d502
Many changes were done in drivers/pinctrl/bcm/pinctrl-bcm2835.c between
5.4.171 and 5.4.179.
The following 3 patches do not apply any more:
* target/linux/bcm27xx/patches-5.4/950-0316-pinctrl-bcm2835-Add-support-for-BCM2711-pull-up-func.patch
This was already integrated in kernel v5.4-rc1, it was never needed.
* target/linux/bcm27xx/patches-5.4/950-0328-Revert-pinctrl-bcm2835-Pass-irqchip-when-adding-gpio.patch
* target/linux/bcm27xx/patches-5.4/950-0362-pinctrl-bcm2835-Change-init-order-for-gpio-hogs.patch
I think these were done to fix the problem which was really fixed in
commit 75278f1aff5e ("pinctrl: bcm2835: Change init order for gpio
hogs") from v5.4.175
target/linux/generic/backport-5.4/716-v5.5-net-sfp-move-fwnode-parsing-into-sfp-bus-layer.patch
Move fwnode_device_is_available to the same position as in kernel 5.10.
target/linux/layerscape/patches-5.4/302-dts-0083-arm64-ls1028a-qds-correct-bus-of-rtc.patch
Applied in commit 65816c1034769e714edb70f59a33bc5472d9e55f ("arm64: dts:
ls1028a-qds: move rtc node to the correct i2c bus")
Compile-tested: lantiq/xrx200, bcm27xx/bcm2710
Run-tested: lantiq/xrx200
Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de>
132 lines
4.6 KiB
Diff
132 lines
4.6 KiB
Diff
From f9a5a54b59cb904b37bf7409a43635ab195d0214 Mon Sep 17 00:00:00 2001
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From: Russell King <rmk+kernel@armlinux.org.uk>
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Date: Tue, 19 Nov 2019 10:13:25 +0000
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Subject: [PATCH 646/660] net: sfp: add module start/stop upstream
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notifications
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When dealing with some copper modules, we can't positively know the
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module capabilities are until we have probed the PHY. Without the full
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capabilities, we may end up failing a module that we could otherwise
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drive with a restricted set of capabilities.
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An example of this would be a module with a NBASE-T PHY plugged into
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a host that supports phy interface modes 2500BASE-X and SGMII. The
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PHY supports 10GBASE-R, 5000BASE-X, 2500BASE-X, SGMII interface modes,
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which means a subset of the capabilities are compatible with the host.
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However, reading the module EEPROM leads us to believe that the module
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only supports ethtool link mode 10GBASE-T, which is incompatible with
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the host - and thus results in the module being rejected.
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This patch adds an extra notification which are triggered after the
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SFP module's PHY probe, and a corresponding notification just before
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the PHY is removed.
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Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
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---
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drivers/net/phy/sfp-bus.c | 21 +++++++++++++++++++++
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drivers/net/phy/sfp.c | 8 ++++++++
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drivers/net/phy/sfp.h | 2 ++
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include/linux/sfp.h | 4 ++++
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4 files changed, 35 insertions(+)
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--- a/drivers/net/phy/sfp-bus.c
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+++ b/drivers/net/phy/sfp-bus.c
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@@ -717,6 +717,27 @@ void sfp_module_remove(struct sfp_bus *b
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}
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EXPORT_SYMBOL_GPL(sfp_module_remove);
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+int sfp_module_start(struct sfp_bus *bus)
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+{
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+ const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
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+ int ret = 0;
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+
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+ if (ops && ops->module_start)
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+ ret = ops->module_start(bus->upstream);
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+
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+ return ret;
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+}
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+EXPORT_SYMBOL_GPL(sfp_module_start);
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+
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+void sfp_module_stop(struct sfp_bus *bus)
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+{
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+ const struct sfp_upstream_ops *ops = sfp_get_upstream_ops(bus);
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+
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+ if (ops && ops->module_stop)
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+ ops->module_stop(bus->upstream);
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+}
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+EXPORT_SYMBOL_GPL(sfp_module_stop);
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+
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static void sfp_socket_clear(struct sfp_bus *bus)
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{
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bus->sfp_dev = NULL;
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--- a/drivers/net/phy/sfp.c
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+++ b/drivers/net/phy/sfp.c
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@@ -59,6 +59,7 @@ enum {
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SFP_DEV_UP,
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SFP_S_DOWN = 0,
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+ SFP_S_FAIL,
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SFP_S_WAIT,
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SFP_S_INIT,
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SFP_S_INIT_TX_FAULT,
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@@ -122,6 +123,7 @@ static const char *event_to_str(unsigned
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static const char * const sm_state_strings[] = {
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[SFP_S_DOWN] = "down",
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+ [SFP_S_FAIL] = "fail",
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[SFP_S_WAIT] = "wait",
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[SFP_S_INIT] = "init",
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[SFP_S_INIT_TX_FAULT] = "init_tx_fault",
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@@ -1918,6 +1920,8 @@ static void sfp_sm_main(struct sfp *sfp,
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if (sfp->sm_state == SFP_S_LINK_UP &&
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sfp->sm_dev_state == SFP_DEV_UP)
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sfp_sm_link_down(sfp);
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+ if (sfp->sm_state > SFP_S_INIT)
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+ sfp_module_stop(sfp->sfp_bus);
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if (sfp->mod_phy)
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sfp_sm_phy_detach(sfp);
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sfp_module_tx_disable(sfp);
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@@ -1985,6 +1989,10 @@ static void sfp_sm_main(struct sfp *sfp,
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* clear. Probe for the PHY and check the LOS state.
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*/
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sfp_sm_probe_for_phy(sfp);
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+ if (sfp_module_start(sfp->sfp_bus)) {
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+ sfp_sm_next(sfp, SFP_S_FAIL, 0);
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+ break;
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+ }
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sfp_sm_link_check_los(sfp);
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/* Reset the fault retry count */
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--- a/drivers/net/phy/sfp.h
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+++ b/drivers/net/phy/sfp.h
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@@ -22,6 +22,8 @@ void sfp_link_up(struct sfp_bus *bus);
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void sfp_link_down(struct sfp_bus *bus);
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int sfp_module_insert(struct sfp_bus *bus, const struct sfp_eeprom_id *id);
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void sfp_module_remove(struct sfp_bus *bus);
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+int sfp_module_start(struct sfp_bus *bus);
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+void sfp_module_stop(struct sfp_bus *bus);
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int sfp_link_configure(struct sfp_bus *bus, const struct sfp_eeprom_id *id);
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struct sfp_bus *sfp_register_socket(struct device *dev, struct sfp *sfp,
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const struct sfp_socket_ops *ops);
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--- a/include/linux/sfp.h
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+++ b/include/linux/sfp.h
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@@ -507,6 +507,8 @@ struct sfp_bus;
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* @module_insert: called after a module has been detected to determine
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* whether the module is supported for the upstream device.
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* @module_remove: called after the module has been removed.
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+ * @module_start: called after the PHY probe step
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+ * @module_stop: called before the PHY is removed
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* @link_down: called when the link is non-operational for whatever
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* reason.
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* @link_up: called when the link is operational.
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@@ -520,6 +522,8 @@ struct sfp_upstream_ops {
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void (*detach)(void *priv, struct sfp_bus *bus);
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int (*module_insert)(void *priv, const struct sfp_eeprom_id *id);
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void (*module_remove)(void *priv);
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+ int (*module_start)(void *priv);
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+ void (*module_stop)(void *priv);
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void (*link_down)(void *priv);
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void (*link_up)(void *priv);
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int (*connect_phy)(void *priv, struct phy_device *);
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