Re: [PATCH RFC v2 1/4] net: stmmac: platform: read channels irq
flat view
From: Matthias Brugger <mbrugger@suse.com>
Date: 2026-01-21 16:14:43
Also in:
imx, linux-devicetree, lkml, netdev
On 21/01/2026 15:23, Jan Petrous via B4 Relay wrote:
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. Signed-off-by: Jan Petrous (OSS) <jan.petrous@oss.nxp.com>
Reviewed-by: Matthias Brugger <mbrugger@suse.com>
quoted hunk ↗ jump to hunk
--- .../net/ethernet/stmicro/stmmac/stmmac_platform.c | 38 +++++++++++++++++++++- 1 file changed, 37 insertions(+), 1 deletion(-)diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c index 8979a50b5507..f10a691b8add 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@@ -743,7 +746,40 @@ 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 */ + for (i = 0; i < MTL_MAX_RX_QUEUES; i++) { + 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 */ + break; + } + } + + /* TX channels irq */ + for (i = 0; i < MTL_MAX_TX_QUEUES; i++) { + 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 */ + break; + } + } + + return 0; } EXPORT_SYMBOL_GPL(stmmac_get_platform_resources);