target/linux/brcm63xx/patches-4.4/001-4.16-02-bcm63xx_enet-use-platform-data-for-dma-channel-numbe.patch

   1 From b7d1d1f345bb3b25c360c1df812d98866e2ee7fb Mon Sep 17 00:00:00 2001
   2 From: Jonas Gorski <jonas.gorski@gmail.com>
   3 Date: Sat, 30 Sep 2017 13:50:03 +0200
   4 Subject: [PATCH 2/4] bcm63xx_enet: use platform data for dma channel numbers
   5
   6 To reduce the reliance on device ids, pass the dma channel numbers to
   7 the enet devices as platform data.
   8
   9 Signed-off-by: Jonas Gorski <jonas.gorski@gmail.com>
  10 ---
  11  arch/mips/bcm63xx/dev-enet.c                          |  8 ++++++++
  12  arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_enet.h |  4 ++++
  13  drivers/net/ethernet/broadcom/bcm63xx_enet.c          | 11 ++---------
  14  3 files changed, 14 insertions(+), 9 deletions(-)
  15
  16 --- a/arch/mips/bcm63xx/dev-enet.c
  17 +++ b/arch/mips/bcm63xx/dev-enet.c
  18 @@ -265,6 +265,14 @@ int __init bcm63xx_enet_register(int uni
  19                 dpd->dma_chan_width = ENETDMA_CHAN_WIDTH;
  20         }
  21
  22 +       if (unit == 0) {
  23 +               dpd->rx_chan = 0;
  24 +               dpd->tx_chan = 1;
  25 +       } else {
  26 +               dpd->rx_chan = 2;
  27 +               dpd->tx_chan = 3;
  28 +       }
  29 +
  30         ret = platform_device_register(pdev);
  31         if (ret)
  32                 return ret;
  33 --- a/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_enet.h
  34 +++ b/arch/mips/include/asm/mach-bcm63xx/bcm63xx_dev_enet.h
  35 @@ -54,6 +54,10 @@ struct bcm63xx_enet_platform_data {
  36
  37         /* DMA descriptor shift */
  38         unsigned int dma_desc_shift;
  39 +
  40 +       /* dma channel ids */
  41 +       int rx_chan;
  42 +       int tx_chan;
  43  };
  44
  45  /*
  46 --- a/drivers/net/ethernet/broadcom/bcm63xx_enet.c
  47 +++ b/drivers/net/ethernet/broadcom/bcm63xx_enet.c
  48 @@ -1769,15 +1769,6 @@ static int bcm_enet_probe(struct platfor
  49         priv->irq_tx = res_irq_tx->start;
  50         priv->mac_id = pdev->id;
  51
  52 -       /* get rx & tx dma channel id for this mac */
  53 -       if (priv->mac_id == 0) {
  54 -               priv->rx_chan = 0;
  55 -               priv->tx_chan = 1;
  56 -       } else {
  57 -               priv->rx_chan = 2;
  58 -               priv->tx_chan = 3;
  59 -       }
  60 -
  61         priv->mac_clk = devm_clk_get(&pdev->dev, "enet");
  62         if (IS_ERR(priv->mac_clk)) {
  63                 ret = PTR_ERR(priv->mac_clk);
  64 @@ -1809,6 +1800,8 @@ static int bcm_enet_probe(struct platfor
  65                 priv->dma_chan_width = pd->dma_chan_width;
  66                 priv->dma_has_sram = pd->dma_has_sram;
  67                 priv->dma_desc_shift = pd->dma_desc_shift;
  68 +               priv->rx_chan = pd->rx_chan;
  69 +               priv->tx_chan = pd->tx_chan;
  70         }
  71
  72         if (priv->mac_id == 0 && priv->has_phy && !priv->use_external_mii) {