[PATCH V1 net-next 2/3] net: stmmac: add platform level clocks management
From: Joakim Zhang <hidden>
Date: 2021-02-23 10:50:09
Subsystem:
networking drivers, stmmac ethernet driver, the rest · Maintainers:
Andrew Lunn, "David S. Miller", Eric Dumazet, Jakub Kicinski, Paolo Abeni, Maxime Chevallier, Linus Torvalds
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_enable callback. Signed-off-by: Joakim Zhang <redacted> --- drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 10 ++++++++++ include/linux/stmmac.h | 1 + 2 files changed, 11 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 35a79c00a477..3f12faa224aa 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c@@ -126,9 +126,19 @@ static int stmmac_bus_clks_enable(struct stmmac_priv *priv, bool enabled) clk_disable_unprepare(priv->plat->stmmac_clk); return ret; } + if (priv->plat->clks_enable) { + ret = priv->plat->clks_enable(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_enable) + priv->plat->clks_enable(priv->plat->bsp_priv, enabled); } return ret;
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index a302982de2d7..f2486a0ab5f1 100644
--- a/include/linux/stmmac.h
+++ b/include/linux/stmmac.h@@ -183,6 +183,7 @@ 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_enable)(void *priv, bool enabled); void *bsp_priv; struct clk *stmmac_clk; struct clk *pclk;
--
2.17.1