diff options
| author | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2022-09-13 21:06:27 +0200 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2022-09-20 16:54:13 +0200 |
| commit | 8475c4b70b040f9d8cbc308100f2c4d865f810b3 (patch) | |
| tree | 56edb7db335383f20de2d95677a2fac2557c714d /drivers/net/phy/sfp.c | |
| parent | dt-bindings: net: dsa: convert ocelot.txt to dt-schema (diff) | |
| download | linux-8475c4b70b040f9d8cbc308100f2c4d865f810b3.tar.xz linux-8475c4b70b040f9d8cbc308100f2c4d865f810b3.zip | |
net: sfp: re-implement soft state polling setup
Re-implement the decision making for soft state polling. Instead of
generating the soft state mask in sfp_soft_start_poll() by looking at
which GPIOs are available, record their availability in
sfp_sm_mod_probe() in sfp->state_hw_mask.
This will then allow us to clear bits in sfp->state_hw_mask in module
specific quirks when the hardware signals should not be used, thereby
allowing us to switch to using the software state polling.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'drivers/net/phy/sfp.c')
| -rw-r--r-- | drivers/net/phy/sfp.c | 38 |
1 files changed, 26 insertions, 12 deletions
diff --git a/drivers/net/phy/sfp.c b/drivers/net/phy/sfp.c index a12f7b599da2..b9fe1f554f27 100644 --- a/drivers/net/phy/sfp.c +++ b/drivers/net/phy/sfp.c @@ -234,6 +234,7 @@ struct sfp { bool need_poll; struct mutex st_mutex; /* Protects state */ + unsigned int state_hw_mask; unsigned int state_soft_mask; unsigned int state; struct delayed_work poll; @@ -499,17 +500,18 @@ static void sfp_soft_set_state(struct sfp *sfp, unsigned int state) static void sfp_soft_start_poll(struct sfp *sfp) { const struct sfp_eeprom_id *id = &sfp->id; + unsigned int mask = 0; sfp->state_soft_mask = 0; - if (id->ext.enhopts & SFP_ENHOPTS_SOFT_TX_DISABLE && - !sfp->gpio[GPIO_TX_DISABLE]) - sfp->state_soft_mask |= SFP_F_TX_DISABLE; - if (id->ext.enhopts & SFP_ENHOPTS_SOFT_TX_FAULT && - !sfp->gpio[GPIO_TX_FAULT]) - sfp->state_soft_mask |= SFP_F_TX_FAULT; - if (id->ext.enhopts & SFP_ENHOPTS_SOFT_RX_LOS && - !sfp->gpio[GPIO_LOS]) - sfp->state_soft_mask |= SFP_F_LOS; + if (id->ext.enhopts & SFP_ENHOPTS_SOFT_TX_DISABLE) + mask |= SFP_F_TX_DISABLE; + if (id->ext.enhopts & SFP_ENHOPTS_SOFT_TX_FAULT) + mask |= SFP_F_TX_FAULT; + if (id->ext.enhopts & SFP_ENHOPTS_SOFT_RX_LOS) + mask |= SFP_F_LOS; + + // Poll the soft state for hardware pins we want to ignore + sfp->state_soft_mask = ~sfp->state_hw_mask & mask; if (sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT) && !sfp->need_poll) @@ -523,10 +525,11 @@ static void sfp_soft_stop_poll(struct sfp *sfp) static unsigned int sfp_get_state(struct sfp *sfp) { - unsigned int state = sfp->get_state(sfp); + unsigned int soft = sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT); + unsigned int state; - if (state & SFP_F_PRESENT && - sfp->state_soft_mask & (SFP_F_LOS | SFP_F_TX_FAULT)) + state = sfp->get_state(sfp) & sfp->state_hw_mask; + if (state & SFP_F_PRESENT && soft) state |= sfp_soft_get_state(sfp); return state; @@ -1902,6 +1905,15 @@ static int sfp_sm_mod_probe(struct sfp *sfp, bool report) if (ret < 0) return ret; + /* Initialise state bits to use from hardware */ + sfp->state_hw_mask = SFP_F_PRESENT; + if (sfp->gpio[GPIO_TX_DISABLE]) + sfp->state_hw_mask |= SFP_F_TX_DISABLE; + if (sfp->gpio[GPIO_TX_FAULT]) + sfp->state_hw_mask |= SFP_F_TX_FAULT; + if (sfp->gpio[GPIO_LOS]) + sfp->state_hw_mask |= SFP_F_LOS; + if (!memcmp(id.base.vendor_name, "ALCATELLUCENT ", 16) && !memcmp(id.base.vendor_pn, "3FE46541AA ", 16)) sfp->module_t_start_up = T_START_UP_BAD_GPON; @@ -2528,6 +2540,8 @@ static int sfp_probe(struct platform_device *pdev) return PTR_ERR(sfp->gpio[i]); } + sfp->state_hw_mask = SFP_F_PRESENT; + sfp->get_state = sfp_gpio_get_state; sfp->set_state = sfp_gpio_set_state; |