mirror of
https://github.com/openwrt/openwrt.git
synced 2024-12-25 08:21:14 +00:00
1c16b574c4
Backport the phy/phylink/sfp patches currently queued in netdev or in mainline necessary to support GPON popular modules, specifically to support Huawei and Nokia GPON modules. Signed-off-by: Russell King <linux@armlinux.org.uk> [jonas.gorski: include kernel version in file names, refresh patches] Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
160 lines
4.3 KiB
Diff
160 lines
4.3 KiB
Diff
From 57cbf7453551db1df619b79410d79fc418d862d5 Mon Sep 17 00:00:00 2001
|
|
From: Russell King <rmk+kernel@armlinux.org.uk>
|
|
Date: Tue, 5 Nov 2019 13:00:45 +0000
|
|
Subject: [PATCH 632/660] net: sfp: move module insert reporting out of probe
|
|
|
|
Move the module insertion reporting out of the probe handling, but
|
|
after we have detected that the upstream has attached (since that is
|
|
whom we are reporting insertion to.)
|
|
|
|
Only report module removal if we had previously reported a module
|
|
insertion.
|
|
|
|
This gives cleaner semantics, and means we can probe the module before
|
|
we have an upstream attached.
|
|
|
|
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
|
|
---
|
|
drivers/net/phy/sfp.c | 58 +++++++++++++++++++++++++++++--------------
|
|
1 file changed, 40 insertions(+), 18 deletions(-)
|
|
|
|
--- a/drivers/net/phy/sfp.c
|
|
+++ b/drivers/net/phy/sfp.c
|
|
@@ -45,11 +45,12 @@ enum {
|
|
SFP_E_TIMEOUT,
|
|
|
|
SFP_MOD_EMPTY = 0,
|
|
+ SFP_MOD_ERROR,
|
|
SFP_MOD_PROBE,
|
|
+ SFP_MOD_WAITDEV,
|
|
SFP_MOD_HPOWER,
|
|
SFP_MOD_WAITPWR,
|
|
SFP_MOD_PRESENT,
|
|
- SFP_MOD_ERROR,
|
|
|
|
SFP_DEV_DETACHED = 0,
|
|
SFP_DEV_DOWN,
|
|
@@ -68,11 +69,12 @@ enum {
|
|
|
|
static const char * const mod_state_strings[] = {
|
|
[SFP_MOD_EMPTY] = "empty",
|
|
+ [SFP_MOD_ERROR] = "error",
|
|
[SFP_MOD_PROBE] = "probe",
|
|
+ [SFP_MOD_WAITDEV] = "waitdev",
|
|
[SFP_MOD_HPOWER] = "hpower",
|
|
[SFP_MOD_WAITPWR] = "waitpwr",
|
|
[SFP_MOD_PRESENT] = "present",
|
|
- [SFP_MOD_ERROR] = "error",
|
|
};
|
|
|
|
static const char *mod_state_to_str(unsigned short mod_state)
|
|
@@ -1479,16 +1481,13 @@ static int sfp_sm_mod_probe(struct sfp *
|
|
if (ret < 0)
|
|
return ret;
|
|
|
|
- ret = sfp_module_insert(sfp->sfp_bus, &sfp->id);
|
|
- if (ret < 0)
|
|
- return ret;
|
|
-
|
|
return 0;
|
|
}
|
|
|
|
static void sfp_sm_mod_remove(struct sfp *sfp)
|
|
{
|
|
- sfp_module_remove(sfp->sfp_bus);
|
|
+ if (sfp->sm_mod_state > SFP_MOD_WAITDEV)
|
|
+ sfp_module_remove(sfp->sfp_bus);
|
|
|
|
sfp_hwmon_remove(sfp);
|
|
|
|
@@ -1539,12 +1538,12 @@ static void sfp_sm_module(struct sfp *sf
|
|
}
|
|
|
|
/* Handle device detach globally */
|
|
- if (sfp->sm_dev_state < SFP_DEV_DOWN) {
|
|
+ if (sfp->sm_dev_state < SFP_DEV_DOWN &&
|
|
+ sfp->sm_mod_state > SFP_MOD_WAITDEV) {
|
|
if (sfp->module_power_mW > 1000 &&
|
|
sfp->sm_mod_state > SFP_MOD_HPOWER)
|
|
sfp_sm_mod_hpower(sfp, false);
|
|
- if (sfp->sm_mod_state > SFP_MOD_EMPTY)
|
|
- sfp_sm_mod_next(sfp, SFP_MOD_EMPTY, 0);
|
|
+ sfp_sm_mod_next(sfp, SFP_MOD_WAITDEV, 0);
|
|
return;
|
|
}
|
|
|
|
@@ -1555,6 +1554,7 @@ static void sfp_sm_module(struct sfp *sf
|
|
break;
|
|
|
|
case SFP_MOD_PROBE:
|
|
+ /* Wait for T_PROBE_INIT to time out */
|
|
if (event != SFP_E_TIMEOUT)
|
|
break;
|
|
|
|
@@ -1568,6 +1568,20 @@ static void sfp_sm_module(struct sfp *sf
|
|
break;
|
|
}
|
|
|
|
+ sfp_sm_mod_next(sfp, SFP_MOD_WAITDEV, 0);
|
|
+ /* fall through */
|
|
+ case SFP_MOD_WAITDEV:
|
|
+ /* Ensure that the device is attached before proceeding */
|
|
+ if (sfp->sm_dev_state < SFP_DEV_DOWN)
|
|
+ break;
|
|
+
|
|
+ /* Report the module insertion to the upstream device */
|
|
+ err = sfp_module_insert(sfp->sfp_bus, &sfp->id);
|
|
+ if (err < 0) {
|
|
+ sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0);
|
|
+ break;
|
|
+ }
|
|
+
|
|
/* If this is a power level 1 module, we are done */
|
|
if (sfp->module_power_mW <= 1000)
|
|
goto insert;
|
|
@@ -1577,12 +1591,17 @@ static void sfp_sm_module(struct sfp *sf
|
|
case SFP_MOD_HPOWER:
|
|
/* Enable high power mode */
|
|
err = sfp_sm_mod_hpower(sfp, true);
|
|
- if (err == 0)
|
|
- sfp_sm_mod_next(sfp, SFP_MOD_WAITPWR, T_HPOWER_LEVEL);
|
|
- else if (err != -EAGAIN)
|
|
- sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0);
|
|
- else
|
|
- sfp_sm_set_timer(sfp, T_PROBE_RETRY);
|
|
+ if (err < 0) {
|
|
+ if (err != -EAGAIN) {
|
|
+ sfp_module_remove(sfp->sfp_bus);
|
|
+ sfp_sm_mod_next(sfp, SFP_MOD_ERROR, 0);
|
|
+ } else {
|
|
+ sfp_sm_set_timer(sfp, T_PROBE_RETRY);
|
|
+ }
|
|
+ break;
|
|
+ }
|
|
+
|
|
+ sfp_sm_mod_next(sfp, SFP_MOD_WAITPWR, T_HPOWER_LEVEL);
|
|
break;
|
|
|
|
case SFP_MOD_WAITPWR:
|
|
@@ -1750,8 +1769,6 @@ static void sfp_sm_event(struct sfp *sfp
|
|
static void sfp_attach(struct sfp *sfp)
|
|
{
|
|
sfp_sm_event(sfp, SFP_E_DEV_ATTACH);
|
|
- if (sfp->state & SFP_F_PRESENT)
|
|
- sfp_sm_event(sfp, SFP_E_INSERT);
|
|
}
|
|
|
|
static void sfp_detach(struct sfp *sfp)
|
|
@@ -2001,6 +2018,11 @@ static int sfp_probe(struct platform_dev
|
|
sfp->state |= SFP_F_RATE_SELECT;
|
|
sfp_set_state(sfp, sfp->state);
|
|
sfp_module_tx_disable(sfp);
|
|
+ if (sfp->state & SFP_F_PRESENT) {
|
|
+ rtnl_lock();
|
|
+ sfp_sm_event(sfp, SFP_E_INSERT);
|
|
+ rtnl_unlock();
|
|
+ }
|
|
|
|
for (i = 0; i < GPIO_MAX; i++) {
|
|
if (gpio_flags[i] != GPIOD_IN || !sfp->gpio[i])
|