net: stmmac: Add support for TX/RX channel interrupt

Enable TX/RX channel interrupt registration for MAC that interrupts CPU
through shared peripheral interrupt (SPI).

Per channel interrupts and interrupt-names are registered through,
Eg: 4 tx and 4 rx channels:
interrupts = <GIC_SPI 100 IRQ_TYPE_LEVEL_HIGH>,
             <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>,
             <GIC_SPI 102 IRQ_TYPE_LEVEL_HIGH>,
             <GIC_SPI 103 IRQ_TYPE_LEVEL_HIGH>;
             <GIC_SPI 104 IRQ_TYPE_LEVEL_HIGH>;
             <GIC_SPI 105 IRQ_TYPE_LEVEL_HIGH>;
             <GIC_SPI 106 IRQ_TYPE_LEVEL_HIGH>;
             <GIC_SPI 107 IRQ_TYPE_LEVEL_HIGH>;
interrupt-names = "dma_tx0",
                  "dma_tx1",
                  "dma_tx2",
                  "dma_tx3",
                  "dma_rx0",
                  "dma_rx1",
                  "dma_rx2",
                  "dma_rx3";

Signed-off-by: Teoh Ji Sheng <ji.sheng.teoh@intel.com>
Signed-off-by: Swee Leong Ching <leong.ching.swee@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
index 70eadc83ca6823d61639adde1364fc0cbf11d153..ae6859153e98d575e8fcaaef21605c48261c441c 100644 (file)
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_platform.c
@@ -710,6 +710,10 @@ EXPORT_SYMBOL_GPL(devm_stmmac_probe_config_dt);
 int stmmac_get_platform_resources(struct platform_device *pdev,
                                  struct stmmac_resources *stmmac_res)
 {
+       char irq_name[9];
+       int i;
+       int irq;
+
        memset(stmmac_res, 0, sizeof(*stmmac_res));
 
        /* Get IRQ information early to have an ability to ask for deferred
@@ -743,6 +747,30 @@ int stmmac_get_platform_resources(struct platform_device *pdev,
                dev_info(&pdev->dev, "IRQ eth_lpi not found\n");
        }
 
+       /* For RX Channel */
+       for (i = 0; i < MTL_MAX_RX_QUEUES; i++) {
+               snprintf(irq_name, sizeof(irq_name), "dma_rx%i", i);
+               irq = platform_get_irq_byname_optional(pdev, irq_name);
+               if (irq == -EPROBE_DEFER)
+                       return irq;
+               else if (irq < 0)
+                       break;
+
+               stmmac_res->rx_irq[i] = irq;
+       }
+
+       /* For TX Channel */
+       for (i = 0; i < MTL_MAX_TX_QUEUES; i++) {
+               snprintf(irq_name, sizeof(irq_name), "dma_tx%i", i);
+               irq = platform_get_irq_byname_optional(pdev, irq_name);
+               if (irq == -EPROBE_DEFER)
+                       return irq;
+               else if (irq < 0)
+                       break;
+
+               stmmac_res->tx_irq[i] = irq;
+       }
+
        stmmac_res->addr = devm_platform_ioremap_resource(pdev, 0);
 
        return PTR_ERR_OR_ZERO(stmmac_res->addr);