stmmac: dwmac-mediatek: add platform level clocks management

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>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-mediatek.c
index 58c0fea..0ff57c2 100644 (file)
--- 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);