diff mbox series

[RFC,V2,net-next,2/3] net: stmmac: add platform level clocks management

Message ID 20210225115050.23971-3-qiangqing.zhang@nxp.com (mailing list archive)
State Superseded
Delegated to: Netdev Maintainers
Headers show
Series net: stmmac: implement clocks management | expand

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netdev/cc_maintainers warning 9 maintainers not CCed: linux-stm32@st-md-mailman.stormreply.com fugang.duan@nxp.com kim.tatt.chuah@intel.com boon.leong.ong@intel.com mcoquelin.stm32@gmail.com rusaimi.amira.rusaimi@intel.com vee.khee.wong@intel.com weifeng.voon@intel.com linux-arm-kernel@lists.infradead.org
netdev/source_inline success Was 0 now: 0
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netdev/module_param success Was 0 now: 0
netdev/build_32bit success Errors and warnings before: 22 this patch: 22
netdev/kdoc success Errors and warnings before: 0 this patch: 0
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netdev/checkpatch warning WARNING: line length of 85 exceeds 80 columns
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netdev/stable success Stable not CCed

Commit Message

Joakim Zhang Feb. 25, 2021, 11:50 a.m. UTC 
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.

Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
---
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c | 10 ++++++++++
 include/linux/stmmac.h                            |  1 +
 2 files changed, 11 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index 291f530abada..fb427366a1a7 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -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;
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h
index a302982de2d7..5ab2a8138149 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_config)(void *priv, bool enabled);
 	void *bsp_priv;
 	struct clk *stmmac_clk;
 	struct clk *pclk;