Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18;
From:   Biao Huang <biao.huang@mediatek.com>
To:     <davem@davemloft.net>, Jakub Kicinski <kuba@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        <angelogioacchino.delregno@collabora.com>
CC:     Matthias Brugger <matthias.bgg@gmail.com>,
        Giuseppe Cavallaro <peppe.cavallaro@st.com>,
        Alexandre Torgue <alexandre.torgue@foss.st.com>,
        Jose Abreu <joabreu@synopsys.com>,
        Maxime Coquelin <mcoquelin.stm32@gmail.com>,
        Biao Huang <biao.huang@mediatek.com>, <netdev@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-mediatek@lists.infradead.org>,
        <linux-stm32@st-md-mailman.stormreply.com>,
        <srv_heupstream@mediatek.com>, <macpaul.lin@mediatek.com>,
        <dkirjanov@suse.de>
Subject: [PATCH net-next v12 1/7] stmmac: dwmac-mediatek: add platform level clocks management
Date:   Mon, 17 Jan 2022 15:07:00 +0800
Message-ID: <20220117070706.17853-2-biao.huang@mediatek.com>
In-Reply-To: <20220117070706.17853-1-biao.huang@mediatek.com>
References: <20220117070706.17853-1-biao.huang@mediatek.com>
MIME-Version: 1.0
Content-Transfer-Encoding: 7BIT
Content-Type:   text/plain; charset=US-ASCII
Precedence: bulk

This patch implements clks_config callback for dwmac-mediatek platform,
which could support platform level clocks management.

Signed-off-by: Biao Huang <biao.huang@mediatek.com>
Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
---
 .../ethernet/stmicro/stmmac/dwmac-mediatek.c  | 25 +++++++++++++------
 1 file changed, 18 insertions(+), 7 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
index 58c0feaa8131..0ff57c268dca 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
@@ -9,7 +9,6 @@
 #include <linux/of.h>
 #include <linux/of_device.h>
 #include <linux/of_net.h>
-#include <linux/pm_runtime.h>
 #include <linux/regmap.h>
 #include <linux/stmmac.h>
 
@@ -359,9 +358,6 @@ static int mediatek_dwmac_init(struct platform_device *pdev, void *priv)
 		return ret;
 	}
 
-	pm_runtime_enable(&pdev->dev);
-	pm_runtime_get_sync(&pdev->dev);
-
 	return 0;
 }
 
@@ -370,11 +366,25 @@ static void mediatek_dwmac_exit(struct platform_device *pdev, void *priv)
 	struct mediatek_dwmac_plat_data *plat = priv;
 
 	clk_bulk_disable_unprepare(plat->num_clks_to_config, plat->clks);
-
-	pm_runtime_put_sync(&pdev->dev);
-	pm_runtime_disable(&pdev->dev);
 }
 
+static int mediatek_dwmac_clks_config(void *priv, bool enabled)
+{
+	struct mediatek_dwmac_plat_data *plat = priv;
+	int ret = 0;
+
+	if (enabled) {
+		ret = clk_bulk_prepare_enable(plat->num_clks_to_config, plat->clks);
+		if (ret) {
+			dev_err(plat->dev, "failed to enable clks, err = %d\n", ret);
+			return ret;
+		}
+	} else {
+		clk_bulk_disable_unprepare(plat->num_clks_to_config, plat->clks);
+	}
+
+	return ret;
+}
 static int mediatek_dwmac_probe(struct platform_device *pdev)
 {
 	struct mediatek_dwmac_plat_data *priv_plat;
@@ -420,6 +430,7 @@ static int mediatek_dwmac_probe(struct platform_device *pdev)
 	plat_dat->bsp_priv = priv_plat;
 	plat_dat->init = mediatek_dwmac_init;
 	plat_dat->exit = mediatek_dwmac_exit;
+	plat_dat->clks_config = mediatek_dwmac_clks_config;
 	mediatek_dwmac_init(pdev, priv_plat);
 
 	ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res);
-- 
2.25.1