From 3f1be8edee29fe79fc33c88cbd9d647a490410e5 Mon Sep 17 00:00:00 2001 From: Lech Perczak Date: Fri, 15 Dec 2023 17:15:47 +0100 Subject: [PATCH] ramips: mtk_eth_soc: allow multiple resets Use devm_reset_control_array_get_exclusive to register multiple reset lines in FE driver. This is required to reattach ESW reset to FE driver again, based on device tree bindings. While at that, remove unused fe_priv.rst_ppe field, and add error message if getting the reset fails. Fixes: 60fadae62b64 ("ramips: ethernet: ralink: move reset of the esw into the esw instead of fe") Co-developed-by: Maxim Anisimov Signed-off-by: Maxim Anisimov [Split out of the bigger commit, provide commit mesage, refactor error handling] Signed-off-by: Lech Perczak --- .../drivers/net/ethernet/ralink/mtk_eth_soc.c | 14 ++++++++------ .../drivers/net/ethernet/ralink/mtk_eth_soc.h | 3 +-- 2 files changed, 9 insertions(+), 8 deletions(-) diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.c b/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.c index b79b34893808..78b17605d276 100644 --- a/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.c +++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.c @@ -143,12 +143,12 @@ void fe_reset(u32 reset_bits) void fe_reset_fe(struct fe_priv *priv) { - if (!priv->rst_fe) + if (!priv->resets) return; - reset_control_assert(priv->rst_fe); + reset_control_assert(priv->resets); usleep_range(60, 120); - reset_control_deassert(priv->rst_fe); + reset_control_deassert(priv->resets); usleep_range(60, 120); } @@ -1595,9 +1595,11 @@ static int fe_probe(struct platform_device *pdev) priv = netdev_priv(netdev); spin_lock_init(&priv->page_lock); - priv->rst_fe = devm_reset_control_get(&pdev->dev, "fe"); - if (IS_ERR(priv->rst_fe)) - priv->rst_fe = NULL; + priv->resets = devm_reset_control_array_get_exclusive(&pdev->dev); + if (IS_ERR(priv->resets)) { + dev_err(&pdev->dev, "Failed to get resets for FE and ESW cores: %pe\n", priv->resets); + priv->resets = NULL; + } if (soc->init_data) soc->init_data(soc, netdev); diff --git a/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.h b/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.h index 968db366cfaf..892ffb212624 100644 --- a/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.h +++ b/target/linux/ramips/files/drivers/net/ethernet/ralink/mtk_eth_soc.h @@ -497,8 +497,7 @@ struct fe_priv { struct work_struct pending_work; DECLARE_BITMAP(pending_flags, FE_FLAG_MAX); - struct reset_control *rst_ppe; - struct reset_control *rst_fe; + struct reset_control *resets; struct mtk_foe_entry *foe_table; dma_addr_t foe_table_phys; struct flow_offload __rcu **foe_flow_table; -- 2.30.2