diff options
Diffstat (limited to 'drivers/net/dsa/realtek/rtl83xx.c')
| -rw-r--r-- | drivers/net/dsa/realtek/rtl83xx.c | 42 |
1 files changed, 37 insertions, 5 deletions
diff --git a/drivers/net/dsa/realtek/rtl83xx.c b/drivers/net/dsa/realtek/rtl83xx.c index 801873754df2..d2e876805393 100644 --- a/drivers/net/dsa/realtek/rtl83xx.c +++ b/drivers/net/dsa/realtek/rtl83xx.c @@ -184,6 +184,13 @@ rtl83xx_probe(struct device *dev, "realtek,disable-leds"); /* TODO: if power is software controlled, set up any regulators here */ + priv->reset_ctl = devm_reset_control_get_optional(dev, NULL); + if (IS_ERR(priv->reset_ctl)) { + ret = PTR_ERR(priv->reset_ctl); + dev_err_probe(dev, ret, "failed to get reset control\n"); + return ERR_CAST(priv->reset_ctl); + } + priv->reset = devm_gpiod_get_optional(dev, "reset", GPIOD_OUT_LOW); if (IS_ERR(priv->reset)) { dev_err(dev, "failed to get RESET GPIO\n"); @@ -192,11 +199,11 @@ rtl83xx_probe(struct device *dev, dev_set_drvdata(dev, priv); - if (priv->reset) { - gpiod_set_value(priv->reset, 1); + if (priv->reset_ctl || priv->reset) { + rtl83xx_reset_assert(priv); dev_dbg(dev, "asserted RESET\n"); msleep(REALTEK_HW_STOP_DELAY); - gpiod_set_value(priv->reset, 0); + rtl83xx_reset_deassert(priv); msleep(REALTEK_HW_START_DELAY); dev_dbg(dev, "deasserted RESET\n"); } @@ -292,11 +299,36 @@ EXPORT_SYMBOL_NS_GPL(rtl83xx_shutdown, REALTEK_DSA); void rtl83xx_remove(struct realtek_priv *priv) { /* leave the device reset asserted */ - if (priv->reset) - gpiod_set_value(priv->reset, 1); + rtl83xx_reset_assert(priv); } EXPORT_SYMBOL_NS_GPL(rtl83xx_remove, REALTEK_DSA); +void rtl83xx_reset_assert(struct realtek_priv *priv) +{ + int ret; + + ret = reset_control_assert(priv->reset_ctl); + if (ret) + dev_warn(priv->dev, + "Failed to assert the switch reset control: %pe\n", + ERR_PTR(ret)); + + gpiod_set_value(priv->reset, true); +} + +void rtl83xx_reset_deassert(struct realtek_priv *priv) +{ + int ret; + + ret = reset_control_deassert(priv->reset_ctl); + if (ret) + dev_warn(priv->dev, + "Failed to deassert the switch reset control: %pe\n", + ERR_PTR(ret)); + + gpiod_set_value(priv->reset, false); +} + MODULE_AUTHOR("Luiz Angelo Daros de Luca <luizluca@gmail.com>"); MODULE_AUTHOR("Linus Walleij <linus.walleij@linaro.org>"); MODULE_DESCRIPTION("Realtek DSA switches common module"); |