From b7d1d1f345bb3b25c360c1df812d98866e2ee7fb Mon Sep 17 00:00:00 2001 From: Jonas Gorski Date: Sat, 30 Sep 2017 13:50:03 +0200 Subject: [PATCH 2/4] bcm63xx_enet: use platform data for dma channel numbers To reduce the reliance on device ids, pass the dma channel numbers to the enet devices as platform data. Signed-off-by: Jonas Gorski --- arch/mips/bcm63xx/dev-enet.c | 8 ++++++++ arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_enet.h | 4 ++++ drivers/net/ethernet/broadcom/bcm63xx_enet.c | 11 ++--------- 3 files changed, 14 insertions(+), 9 deletions(-) --- a/arch/mips/bcm63xx/dev-enet.c +++ b/arch/mips/bcm63xx/dev-enet.c @@ -265,6 +265,14 @@ int __init bcm63xx_enet_register(int uni dpd->dma_chan_width = ENETDMA_CHAN_WIDTH; } + if (unit == 0) { + dpd->rx_chan = 0; + dpd->tx_chan = 1; + } else { + dpd->rx_chan = 2; + dpd->tx_chan = 3; + } + ret = platform_device_register(pdev); if (ret) return ret; --- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_enet.h +++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_enet.h @@ -55,6 +55,10 @@ struct bcm63xx_enet_platform_data { /* DMA descriptor shift */ unsigned int dma_desc_shift; + + /* dma channel ids */ + int rx_chan; + int tx_chan; }; /* --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c @@ -1755,15 +1755,6 @@ static int bcm_enet_probe(struct platfor priv->irq_tx = res_irq_tx->start; priv->mac_id = pdev->id; - /* get rx & tx dma channel id for this mac */ - if (priv->mac_id == 0) { - priv->rx_chan = 0; - priv->tx_chan = 1; - } else { - priv->rx_chan = 2; - priv->tx_chan = 3; - } - priv->mac_clk = devm_clk_get(&pdev->dev, "enet"); if (IS_ERR(priv->mac_clk)) { ret = PTR_ERR(priv->mac_clk); @@ -1795,6 +1786,8 @@ static int bcm_enet_probe(struct platfor priv->dma_chan_width = pd->dma_chan_width; priv->dma_has_sram = pd->dma_has_sram; priv->dma_desc_shift = pd->dma_desc_shift; + priv->rx_chan = pd->rx_chan; + priv->tx_chan = pd->tx_chan; } if (priv->mac_id == 0 && priv->has_phy && !priv->use_external_mii) {