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From b7d1d1f345bb3b25c360c1df812d98866e2ee7fb Mon Sep 17 00:00:00 2001
From: Jonas Gorski <jonas.gorski@gmail.com>
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 <jonas.gorski@gmail.com>
---
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
@@ -1756,15 +1756,6 @@ 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);
@@ -1796,6 +1787,8 @@ 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) {
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