@@ -40,6 +40,7 @@ config NGBE
config TXGBE
tristate "Wangxun(R) 10GbE PCI Express adapters support"
depends on PCI
+ select I2C_DESIGNWARE_PLATFORM
select COMMON_CLK
select LIBWX
help
@@ -1,6 +1,7 @@
// SPDX-License-Identifier: GPL-2.0
/* Copyright (c) 2015 - 2023 Beijing WangXun Technology Co., Ltd. */
+#include <linux/platform_device.h>
#include <linux/gpio/property.h>
#include <linux/clkdev.h>
#include <linux/clk-provider.h>
@@ -98,6 +99,35 @@ static int txgbe_clock_register(struct txgbe *txgbe)
return 0;
}
+static int txgbe_i2c_register(struct txgbe *txgbe)
+{
+ struct pci_dev *pdev = txgbe->wx->pdev;
+ struct platform_device_info info = {};
+ struct platform_device *i2c_dev;
+ struct resource res[2] = {};
+
+ info.parent = &pdev->dev;
+ info.fwnode = software_node_fwnode(txgbe->nodes.group[SWNODE_I2C]);
+ info.name = "i2c_designware";
+ info.id = (pdev->bus->number << 8) | pdev->devfn;
+
+ res[0].start = pci_resource_start(pdev, 0) + TXGBE_I2C_BASE;
+ res[0].end = pci_resource_start(pdev, 0) + TXGBE_I2C_BASE + 0x100 - 1;
+ res[0].flags = IORESOURCE_MEM;
+ res[1].start = pdev->irq;
+ res[1].end = pdev->irq;
+ res[1].flags = IORESOURCE_IRQ;
+ info.res = res;
+ info.num_res = 2;
+ i2c_dev = platform_device_register_full(&info);
+ if (IS_ERR(i2c_dev))
+ return PTR_ERR(i2c_dev);
+
+ txgbe->i2c_dev = i2c_dev;
+
+ return 0;
+}
+
int txgbe_init_phy(struct txgbe *txgbe)
{
int ret;
@@ -114,8 +144,17 @@ int txgbe_init_phy(struct txgbe *txgbe)
goto err_unregister_swnode;
}
+ ret = txgbe_i2c_register(txgbe);
+ if (ret) {
+ wx_err(txgbe->wx, "failed to init i2c interface: %d\n", ret);
+ goto err_unregister_clk;
+ }
+
return 0;
+err_unregister_clk:
+ clkdev_drop(txgbe->clock);
+ clk_unregister(txgbe->clk);
err_unregister_swnode:
software_node_unregister_node_group(txgbe->nodes.group);
@@ -124,6 +163,7 @@ int txgbe_init_phy(struct txgbe *txgbe)
void txgbe_remove_phy(struct txgbe *txgbe)
{
+ platform_device_unregister(txgbe->i2c_dev);
clkdev_drop(txgbe->clock);
clk_unregister(txgbe->clk);
software_node_unregister_node_group(txgbe->nodes.group);
@@ -55,6 +55,9 @@
#define TXGBE_TS_CTL 0x10300
#define TXGBE_TS_CTL_EVAL_MD BIT(31)
+/* I2C registers */
+#define TXGBE_I2C_BASE 0x14900
+
/* Part Number String Length */
#define TXGBE_PBANUM_LENGTH 32
@@ -146,6 +149,7 @@ struct txgbe_nodes {
struct txgbe {
struct wx *wx;
struct txgbe_nodes nodes;
+ struct platform_device *i2c_dev;
struct clk_lookup *clock;
struct clk *clk;
};
Register the platform device to use Designware I2C bus master driver. Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com> --- drivers/net/ethernet/wangxun/Kconfig | 1 + .../net/ethernet/wangxun/txgbe/txgbe_phy.c | 40 +++++++++++++++++++ .../net/ethernet/wangxun/txgbe/txgbe_type.h | 4 ++ 3 files changed, 45 insertions(+)