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net: stmmac: dwmac-meson8b: Make the clock enabling code re-usable 

The timing adjustment clock will need similar logic as the RGMII clock:
It has to be enabled in the driver conditionally and when the driver is
unloaded it should be disabled again. Extract the existing code for the
RGMII clock into a new function so it can be re-used.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Martin Blumenstingl 2020-05-12 23:11:02 +02:00 committed by David S. Miller
parent e4227bff80
commit a54dc4a490
1 changed files with 18 additions and 5 deletions
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23
drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c
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@ -266,6 +266,22 @@ static int meson_axg_set_phy_mode(struct meson8b_dwmac *dwmac)
return 0;
}
static int meson8b_devm_clk_prepare_enable(struct meson8b_dwmac *dwmac,
struct clk *clk)
{
int ret;
ret = clk_prepare_enable(clk);
if (ret)
return ret;
devm_add_action_or_reset(dwmac->dev,
(void(*)(void *))clk_disable_unprepare,
dwmac->rgmii_tx_clk);
return 0;
}
static int meson8b_init_prg_eth(struct meson8b_dwmac *dwmac)
{
int ret;
@ -299,16 +315,13 @@ static int meson8b_init_prg_eth(struct meson8b_dwmac *dwmac)
return ret;
}
ret = clk_prepare_enable(dwmac->rgmii_tx_clk);
ret = meson8b_devm_clk_prepare_enable(dwmac,
dwmac->rgmii_tx_clk);
if (ret) {
dev_err(dwmac->dev,
"failed to enable the RGMII TX clock\n");
return ret;
}
devm_add_action_or_reset(dwmac->dev,
(void(*)(void *))clk_disable_unprepare,
dwmac->rgmii_tx_clk);
break;
case PHY_INTERFACE_MODE_RMII: