Commit b4d45aee authored by Joakim Zhang's avatar Joakim Zhang Committed by David S. Miller
Browse files

net: stmmac: add platform level clocks management 



This patch intends to add platform level clocks management. Some
platforms may have their own special clocks, they also need to be
managed dynamically. If you want to manage such clocks, please implement
clks_config callback.

Reviewed-by: default avatarAndrew Lunn <andrew@lunn.ch>
Signed-off-by: default avatarJoakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent 5ec55823

drivers/net/ethernet/stmicro/stmmac/stmmac_main.c

+10 −0
Original line number Diff line number Diff line
@@ -127,9 +127,19 @@ int stmmac_bus_clks_config(struct stmmac_priv *priv, bool enabled) 
			clk_disable_unprepare(priv->plat->stmmac_clk);

			return ret;

		}

		if (priv->plat->clks_config) {

			ret = priv->plat->clks_config(priv->plat->bsp_priv, enabled);

			if (ret) {

				clk_disable_unprepare(priv->plat->stmmac_clk);

				clk_disable_unprepare(priv->plat->pclk);

				return ret;

			}

		}

	} else {

		clk_disable_unprepare(priv->plat->stmmac_clk);

		clk_disable_unprepare(priv->plat->pclk);

		if (priv->plat->clks_config)

			priv->plat->clks_config(priv->plat->bsp_priv, enabled);

	}



	return ret;

include/linux/stmmac.h

+1 −0
Original line number Diff line number Diff line
@@ -184,6 +184,7 @@ struct plat_stmmacenet_data { 
	int (*init)(struct platform_device *pdev, void *priv);

	void (*exit)(struct platform_device *pdev, void *priv);

	struct mac_device_info *(*setup)(void *priv);

	int (*clks_config)(void *priv, bool enabled);

	void *bsp_priv;

	struct clk *stmmac_clk;

	struct clk *pclk;