linux-kernel - [PATCH] stmmac: pci: Add support for LS7A bridge chip

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Message-Id: <1594371110-7580-1-git-send-email-lizhi01@loongson.cn>
Date:   Fri, 10 Jul 2020 16:51:50 +0800
From:   Zhi Li <lizhi01@...ngson.cn>
To:     peppe.cavallaro@...com, alexandre.torgue@...com,
        joabreu@...opsys.com, davem@...emloft.net, kuba@...nel.org,
        mcoquelin.stm32@...il.com
Cc:     netdev@...r.kernel.org, linux-kernel@...r.kernel.org,
        lixuefeng@...ngson.cn, chenhc@...ote.com, jiaxun.yang@...goat.com,
        yangtiezhu@...ngson.cn, Hongbin Li <lihongbin@...ngson.cn>
Subject: [PATCH] stmmac: pci: Add support for LS7A bridge chip

Add gmac platform data to support LS7A bridge chip.

Co-developed-by: Hongbin Li <lihongbin@...ngson.cn>
Signed-off-by: Hongbin Li <lihongbin@...ngson.cn>
Signed-off-by: Zhi Li <lizhi01@...ngson.cn>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
index 272cb47..dab2a40 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_pci.c
@@ -138,6 +138,24 @@ static const struct stmmac_pci_info snps_gmac5_pci_info = {
 	.setup = snps_gmac5_default_data,
 };
 
+static int loongson_default_data(struct pci_dev *pdev, struct plat_stmmacenent_data *plat)
+{
+	common_default_data(plat);
+
+	plat->bus_id = pci_dev_id(pdev);
+	plat->phy_addr = 0;
+	plat->interface = PHY_INTERFACE_MODE_GMII;
+
+	plat->dma_cfg->pbl = 32;
+	plat->dma_cfg->pblx8 = true;
+
+	return 0;
+}
+
+static struct stmmac_pci_info loongson_pci_info = {
+	.setup = loongson_default_data;
+};
+
 /**
  * stmmac_pci_probe
  *
@@ -204,6 +222,8 @@ static int stmmac_pci_probe(struct pci_dev *pdev,
 	res.addr = pcim_iomap_table(pdev)[i];
 	res.wol_irq = pdev->irq;
 	res.irq = pdev->irq;
+	if (pdev->vendor == PCI_VENDOR_ID_LOONGSON)
+		res.lpi_irq = pdev->irq + 1;
 
 	return stmmac_dvr_probe(&pdev->dev, plat, &res);
 }
@@ -273,11 +293,13 @@ static SIMPLE_DEV_PM_OPS(stmmac_pm_ops, stmmac_pci_suspend, stmmac_pci_resume);
 
 #define PCI_DEVICE_ID_STMMAC_STMMAC		0x1108
 #define PCI_DEVICE_ID_SYNOPSYS_GMAC5_ID		0x7102
+#define PCI_DEVICE_ID_LOONGSON_GMAC		0x7a03
 
 static const struct pci_device_id stmmac_id_table[] = {
 	{ PCI_DEVICE_DATA(STMMAC, STMMAC, &stmmac_pci_info) },
 	{ PCI_DEVICE_DATA(STMICRO, MAC, &stmmac_pci_info) },
 	{ PCI_DEVICE_DATA(SYNOPSYS, GMAC5_ID, &snps_gmac5_pci_info) },
+	{ PCI_DEVICE_DATA(LOONGSON, GMAC, &loongson_pci_info) },
 	{}
 };
 
-- 
2.1.0