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Wed, 15 Sep 2021 17:03:12 +0000 From: Michael Riesch To: linux-rockchip@lists.infradead.org Cc: Heiko Stuebner , ivan@ivan.computer, punitagrawal@gmail.com, Michael Riesch Subject: [RFC PATCH 3/3] net: stmmac: dwmac-rk: use stmmac helper functions for clock management Date: Wed, 15 Sep 2021 19:02:55 +0200 Message-Id: <20210915170255.30561-4-michael.riesch@wolfvision.net> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20210915170255.30561-1-michael.riesch@wolfvision.net> References: <20210915170255.30561-1-michael.riesch@wolfvision.net> X-ClientProxiedBy: VI1PR0102CA0008.eurprd01.prod.exchangelabs.com (2603:10a6:802::21) To DBBPR08MB4523.eurprd08.prod.outlook.com (2603:10a6:10:c8::19) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from carlos.wolfvision-at.intra (91.118.163.37) by VI1PR0102CA0008.eurprd01.prod.exchangelabs.com (2603:10a6:802::21) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.4523.14 via Frontend Transport; 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charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "Linux-rockchip" Errors-To: linux-rockchip-bounces+linux-rockchip=archiver.kernel.org@lists.infradead.org Make the stmmac core responsible for the management of the stmmaceth clock (directly) and the dwmac-rk specific clocks (via a the clks_config callback function). Signed-off-by: Michael Riesch --- .../net/ethernet/stmicro/stmmac/dwmac-rk.c | 38 +++++++------------ 1 file changed, 13 insertions(+), 25 deletions(-) diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c index 96ec7d73a74a..0a66c3b589b1 100644 --- a/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c +++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c @@ -42,7 +42,6 @@ struct rk_priv_data { bool clock_input; bool integrated_phy; - struct clk *clk_mac; struct clk *gmac_clkin; struct clk *mac_clk_rx; struct clk *mac_clk_tx; @@ -1217,11 +1216,6 @@ static int rk_gmac_clk_init(struct plat_stmmacenet_data *plat) dev_err(dev, "cannot get clock %s\n", "pclk_mac"); - bsp_priv->clk_mac = devm_clk_get(dev, "stmmaceth"); - if (IS_ERR(bsp_priv->clk_mac)) - dev_err(dev, "cannot get clock %s\n", - "stmmaceth"); - if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RMII) { bsp_priv->clk_mac_ref = devm_clk_get(dev, "clk_mac_ref"); if (IS_ERR(bsp_priv->clk_mac_ref)) @@ -1245,7 +1239,7 @@ static int rk_gmac_clk_init(struct plat_stmmacenet_data *plat) dev_info(dev, "clock input from PHY\n"); } else { if (bsp_priv->phy_iface == PHY_INTERFACE_MODE_RMII) - clk_set_rate(bsp_priv->clk_mac, 50000000); + clk_set_rate(plat->stmmac_clk, 50000000); } if (plat->phy_node && bsp_priv->integrated_phy) { @@ -1261,8 +1255,9 @@ static int rk_gmac_clk_init(struct plat_stmmacenet_data *plat) return 0; } -static int gmac_clk_enable(struct rk_priv_data *bsp_priv, bool enable) +static int rk_gmac_clks_config(void *priv, bool enable) { + struct rk_priv_data *bsp_priv = priv; int phy_iface = bsp_priv->phy_iface; if (enable) { @@ -1296,10 +1291,6 @@ static int gmac_clk_enable(struct rk_priv_data *bsp_priv, bool enable) if (!IS_ERR(bsp_priv->clk_mac_speed)) clk_prepare_enable(bsp_priv->clk_mac_speed); - /** - * if (!IS_ERR(bsp_priv->clk_mac)) - * clk_prepare_enable(bsp_priv->clk_mac); - */ mdelay(5); bsp_priv->clk_enabled = true; } @@ -1322,10 +1313,7 @@ static int gmac_clk_enable(struct rk_priv_data *bsp_priv, bool enable) clk_disable_unprepare(bsp_priv->mac_clk_tx); clk_disable_unprepare(bsp_priv->clk_mac_speed); - /** - * if (!IS_ERR(bsp_priv->clk_mac)) - * clk_disable_unprepare(bsp_priv->clk_mac); - */ + bsp_priv->clk_enabled = false; } } @@ -1487,10 +1475,6 @@ static int rk_gmac_init(struct platform_device *pdev, void *priv) if (ret) return ret; - ret = gmac_clk_enable(bsp_priv, true); - if (ret) - return ret; - /*rmii or rgmii*/ switch (bsp_priv->phy_iface) { case PHY_INTERFACE_MODE_RGMII: @@ -1519,10 +1503,8 @@ static int rk_gmac_init(struct platform_device *pdev, void *priv) } ret = phy_power_on(bsp_priv, true); - if (ret) { - gmac_clk_enable(bsp_priv, false); + if (ret) return ret; - } if (bsp_priv->integrated_phy) rk_gmac_integrated_phy_powerup(bsp_priv); @@ -1538,7 +1520,6 @@ static void rk_gmac_exit(struct platform_device *pdev, void *priv) rk_gmac_integrated_phy_powerdown(bsp_priv); phy_power_on(bsp_priv, false); - gmac_clk_enable(bsp_priv, false); } static void rk_fix_speed(void *priv, unsigned int speed) @@ -1591,6 +1572,7 @@ static int rk_gmac_probe(struct platform_device *pdev) plat_dat->has_gmac = true; plat_dat->init = rk_gmac_init; plat_dat->exit = rk_gmac_exit; + plat_dat->clks_config = rk_gmac_clks_config; plat_dat->fix_mac_speed = rk_fix_speed; plat_dat->bsp_priv = rk_gmac_setup(pdev, plat_dat, data); @@ -1603,10 +1585,14 @@ static int rk_gmac_probe(struct platform_device *pdev) if (ret) goto err_remove_config_dt; - ret = rk_gmac_init(pdev, plat_dat->bsp_priv); + ret = rk_gmac_clks_config(plat_dat->bsp_priv, true); if (ret) goto err_remove_config_dt; + ret = rk_gmac_init(pdev, plat_dat->bsp_priv); + if (ret) + goto err_gmac_clks_off; + ret = stmmac_dvr_probe(&pdev->dev, plat_dat, &stmmac_res); if (ret) goto err_gmac_powerdown; @@ -1615,6 +1601,8 @@ static int rk_gmac_probe(struct platform_device *pdev) err_gmac_powerdown: rk_gmac_exit(pdev, plat_dat->bsp_priv); +err_gmac_clks_off: + rk_gmac_clks_config(plat_dat->bsp_priv, true); err_remove_config_dt: stmmac_remove_config_dt(pdev, plat_dat); -- 2.17.1 _______________________________________________ Linux-rockchip mailing list Linux-rockchip@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-rockchip