[PATCH v6 2/5] net: stmmac: platform: read channels irq
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From: Jan Petrous via B4 Relay <devnull+jan.petrous.oss.nxp.com@kernel.org>
Date: 2026-02-25 09:20:56
Also in:
b4-sent, imx, linux-arm-kernel, linux-devicetree, lkml
Subsystem:
networking drivers, stmmac ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Maxime Chevallier, Linus Torvalds
Revision v6 of 12 in this series; 1 review trailer.
Revisions (12)
From: "Jan Petrous (OSS)" <jan.petrous@oss.nxp.com> Read IRQ resources for all rx/tx channels, to allow Multi-IRQ mode for platform glue drivers. Reviewed-by: Matthias Brugger <mbrugger@suse.com> Signed-off-by: Jan Petrous (OSS) <jan.petrous@oss.nxp.com> --- .../net/ethernet/stmicro/stmmac/stmmac_platform.c | 40 +++++++++++++++++++++- 1 file changed, 39 insertions(+), 1 deletion(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 5c9fd91a1db9..64cb8751b327 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c@@ -700,6 +700,9 @@ EXPORT_SYMBOL_GPL(stmmac_pltfr_find_clk); int stmmac_get_platform_resources(struct platform_device *pdev, struct stmmac_resources *stmmac_res) { + char name[16]; + int i; + memset(stmmac_res, 0, sizeof(*stmmac_res)); /* Get IRQ information early to have an ability to ask for deferred
@@ -735,7 +738,42 @@ int stmmac_get_platform_resources(struct platform_device *pdev, stmmac_res->addr = devm_platform_ioremap_resource(pdev, 0); - return PTR_ERR_OR_ZERO(stmmac_res->addr); + if (IS_ERR(stmmac_res->addr)) + return PTR_ERR(stmmac_res->addr); + + /* RX channels irq */ + STMMAC_FOREACH_MTL_QUEUE(i, MTL_MAX_RX_QUEUES) { + scnprintf(name, sizeof(name), "rx-queue-%d", i); + stmmac_res->rx_irq[i] = platform_get_irq_byname_optional(pdev, + name); + if (stmmac_res->rx_irq[i] <= 0) { + if (stmmac_res->rx_irq[i] == -EPROBE_DEFER) + return -EPROBE_DEFER; + dev_dbg(&pdev->dev, "IRQ rx-queue-%d not found\n", i); + + /* Stop on first unset rx-queue-%i property member */ + stmmac_res->rx_irq[i] = 0; + break; + } + } + + /* TX channels irq */ + STMMAC_FOREACH_MTL_QUEUE(i, MTL_MAX_TX_QUEUES) { + scnprintf(name, sizeof(name), "tx-queue-%d", i); + stmmac_res->tx_irq[i] = platform_get_irq_byname_optional(pdev, + name); + if (stmmac_res->tx_irq[i] <= 0) { + if (stmmac_res->tx_irq[i] == -EPROBE_DEFER) + return -EPROBE_DEFER; + dev_dbg(&pdev->dev, "IRQ tx-queue-%d not found\n", i); + + /* Stop on first unset tx-queue-%i property member */ + stmmac_res->tx_irq[i] = 0; + break; + } + } + + return 0; } EXPORT_SYMBOL_GPL(stmmac_get_platform_resources);
--
2.47.0