diff options
Diffstat (limited to 'target/linux/generic/backport-5.4/725-v5.5-net-sfp-parse-SFP-power-requirement-earlier.patch')
| -rw-r--r-- | target/linux/generic/backport-5.4/725-v5.5-net-sfp-parse-SFP-power-requirement-earlier.patch | 115 |
1 files changed, 115 insertions, 0 deletions
diff --git a/target/linux/generic/backport-5.4/725-v5.5-net-sfp-parse-SFP-power-requirement-earlier.patch b/target/linux/generic/backport-5.4/725-v5.5-net-sfp-parse-SFP-power-requirement-earlier.patch new file mode 100644 index 0000000000..0b358f86d2 --- /dev/null +++ b/target/linux/generic/backport-5.4/725-v5.5-net-sfp-parse-SFP-power-requirement-earlier.patch @@ -0,0 +1,115 @@ +From d4b8746219e8c0361e5ed6e440ab3a8a600d1f76 Mon Sep 17 00:00:00 2001 +From: Russell King <rmk+kernel@armlinux.org.uk> +Date: Fri, 11 Oct 2019 17:24:40 +0100 +Subject: [PATCH 623/660] net: sfp: parse SFP power requirement earlier + +Parse the SFP power requirement earlier, in preparation for moving the +power level setup code. + +Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk> +--- + drivers/net/phy/sfp.c | 42 +++++++++++++++++++++++++++++------------- + 1 file changed, 29 insertions(+), 13 deletions(-) + +--- a/drivers/net/phy/sfp.c ++++ b/drivers/net/phy/sfp.c +@@ -196,6 +196,8 @@ struct sfp { + unsigned int sm_retries; + + struct sfp_eeprom_id id; ++ unsigned int module_power_mW; ++ + #if IS_ENABLED(CONFIG_HWMON) + struct sfp_diag diag; + struct device *hwmon_dev; +@@ -1309,17 +1311,14 @@ static void sfp_sm_mod_init(struct sfp * + sfp_sm_probe_phy(sfp); + } + +-static int sfp_sm_mod_hpower(struct sfp *sfp) ++static int sfp_module_parse_power(struct sfp *sfp) + { +- u32 power; +- u8 val; +- int err; ++ u32 power_mW = 1000; + +- power = 1000; + if (sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_POWER_DECL)) +- power = 1500; ++ power_mW = 1500; + if (sfp->id.ext.options & cpu_to_be16(SFP_OPTIONS_HIGH_POWER_LEVEL)) +- power = 2000; ++ power_mW = 2000; + + if (sfp->id.ext.sff8472_compliance == SFP_SFF8472_COMPLIANCE_NONE && + (sfp->id.ext.diagmon & (SFP_DIAGMON_DDM | SFP_DIAGMON_ADDRMODE)) != +@@ -1328,23 +1327,33 @@ static int sfp_sm_mod_hpower(struct sfp + * or requires an address change sequence, so assume that + * the module powers up in the indicated power mode. + */ +- if (power > sfp->max_power_mW) { ++ if (power_mW > sfp->max_power_mW) { + dev_err(sfp->dev, + "Host does not support %u.%uW modules\n", +- power / 1000, (power / 100) % 10); ++ power_mW / 1000, (power_mW / 100) % 10); + return -EINVAL; + } + return 0; + } + +- if (power > sfp->max_power_mW) { ++ if (power_mW > sfp->max_power_mW) { + dev_warn(sfp->dev, + "Host does not support %u.%uW modules, module left in power mode 1\n", +- power / 1000, (power / 100) % 10); ++ power_mW / 1000, (power_mW / 100) % 10); + return 0; + } + +- if (power <= 1000) ++ sfp->module_power_mW = power_mW; ++ ++ return 0; ++} ++ ++static int sfp_sm_mod_hpower(struct sfp *sfp) ++{ ++ u8 val; ++ int err; ++ ++ if (sfp->module_power_mW <= 1000) + return 0; + + err = sfp_read(sfp, true, SFP_EXT_STATUS, &val, sizeof(val)); +@@ -1364,7 +1373,8 @@ static int sfp_sm_mod_hpower(struct sfp + } + + dev_info(sfp->dev, "Module switched to %u.%uW power level\n", +- power / 1000, (power / 100) % 10); ++ sfp->module_power_mW / 1000, ++ (sfp->module_power_mW / 100) % 10); + return T_HPOWER_LEVEL; + + err: +@@ -1451,6 +1461,11 @@ static int sfp_sm_mod_probe(struct sfp * + dev_warn(sfp->dev, + "module address swap to access page 0xA2 is not supported.\n"); + ++ /* Parse the module power requirement */ ++ ret = sfp_module_parse_power(sfp); ++ if (ret < 0) ++ return ret; ++ + ret = sfp_hwmon_insert(sfp); + if (ret < 0) + return ret; +@@ -1474,6 +1489,7 @@ static void sfp_sm_mod_remove(struct sfp + sfp_module_tx_disable(sfp); + + memset(&sfp->id, 0, sizeof(sfp->id)); ++ sfp->module_power_mW = 0; + + dev_info(sfp->dev, "module removed\n"); + } |