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net: stmmac: add platform level clocks management

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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: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Joakim Zhang 2021-03-15 20:16:47 +08:00 committed by David S. Miller
parent 5ec5582343
commit b4d45aee66
2 changed files with 11 additions and 0 deletions
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10
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
View file

@ -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;

1
include/linux/stmmac.h
View file

@ -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;