diff options
author | Jiawen Wu <jiawenwu@trustnetic.com> | 2023-06-06 12:21:01 +0300 |
---|---|---|
committer | Paolo Abeni <pabeni@redhat.com> | 2023-06-08 14:25:10 +0300 |
commit | b63f20485e433e6e548df81f5c76556d7f187266 (patch) | |
tree | ce8c7cc9f0b799a2285a9d2eaea63006353d8c11 /drivers/net/ethernet | |
parent | c3e382ad6d15a8041ab8a168ad3ff90137ee8a45 (diff) | |
download | linux-b63f20485e433e6e548df81f5c76556d7f187266.tar.xz |
net: txgbe: Register fixed rate clock
In order for I2C to be able to work in standard mode, register a fixed
rate clock for each I2C device.
Signed-off-by: Jiawen Wu <jiawenwu@trustnetic.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Maciej Fijalkowski <maciej.fijalkowski@intel.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Diffstat (limited to 'drivers/net/ethernet')
-rw-r--r-- | drivers/net/ethernet/wangxun/Kconfig | 1 | ||||
-rw-r--r-- | drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c | 41 | ||||
-rw-r--r-- | drivers/net/ethernet/wangxun/txgbe/txgbe_type.h | 2 |
3 files changed, 44 insertions, 0 deletions
diff --git a/drivers/net/ethernet/wangxun/Kconfig b/drivers/net/ethernet/wangxun/Kconfig index c9d88673d306..190d42a203b4 100644 --- a/drivers/net/ethernet/wangxun/Kconfig +++ b/drivers/net/ethernet/wangxun/Kconfig @@ -40,6 +40,7 @@ config NGBE config TXGBE tristate "Wangxun(R) 10GbE PCI Express adapters support" depends on PCI + depends on COMMON_CLK select LIBWX help This driver supports Wangxun(R) 10GbE PCI Express family of diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c index be4b5ad74a3c..06506cfb8d06 100644 --- a/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_phy.c @@ -2,6 +2,8 @@ /* Copyright (c) 2015 - 2023 Beijing WangXun Technology Co., Ltd. */ #include <linux/gpio/property.h> +#include <linux/clk-provider.h> +#include <linux/clkdev.h> #include <linux/i2c.h> #include <linux/pci.h> @@ -70,6 +72,32 @@ static int txgbe_swnodes_register(struct txgbe *txgbe) return software_node_register_node_group(nodes->group); } +static int txgbe_clock_register(struct txgbe *txgbe) +{ + struct pci_dev *pdev = txgbe->wx->pdev; + struct clk_lookup *clock; + char clk_name[32]; + struct clk *clk; + + snprintf(clk_name, sizeof(clk_name), "i2c_designware.%d", + (pdev->bus->number << 8) | pdev->devfn); + + clk = clk_register_fixed_rate(NULL, clk_name, NULL, 0, 156250000); + if (IS_ERR(clk)) + return PTR_ERR(clk); + + clock = clkdev_create(clk, NULL, clk_name); + if (!clock) { + clk_unregister(clk); + return -ENOMEM; + } + + txgbe->clk = clk; + txgbe->clock = clock; + + return 0; +} + int txgbe_init_phy(struct txgbe *txgbe) { int ret; @@ -80,10 +108,23 @@ int txgbe_init_phy(struct txgbe *txgbe) return ret; } + ret = txgbe_clock_register(txgbe); + if (ret) { + wx_err(txgbe->wx, "failed to register clock: %d\n", ret); + goto err_unregister_swnode; + } + return 0; + +err_unregister_swnode: + software_node_unregister_node_group(txgbe->nodes.group); + + return ret; } void txgbe_remove_phy(struct txgbe *txgbe) { + clkdev_drop(txgbe->clock); + clk_unregister(txgbe->clk); software_node_unregister_node_group(txgbe->nodes.group); } diff --git a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h index 9aa399acd9a0..856d0f9d045b 100644 --- a/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h +++ b/drivers/net/ethernet/wangxun/txgbe/txgbe_type.h @@ -147,6 +147,8 @@ struct txgbe_nodes { struct txgbe { struct wx *wx; struct txgbe_nodes nodes; + struct clk_lookup *clock; + struct clk *clk; }; #endif /* _TXGBE_TYPE_H_ */ |