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From: Thomas Richard <thomas.richard@bootlin.com>
Date: Tue, 16 Apr 2024 14:52:31 +0200
Subject: [PATCH 2/8] phy: ti: phy-j721e-wiz: split wiz_clock_init()
 function
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Message-Id: <20240412-j7200-phy-s2r-v1-2-f15815833974@bootlin.com>
References: <20240412-j7200-phy-s2r-v1-0-f15815833974@bootlin.com>
In-Reply-To: <20240412-j7200-phy-s2r-v1-0-f15815833974@bootlin.com>
To: Vinod Koul <vkoul@kernel.org>, 
 Kishon Vijay Abraham I <kishon@kernel.org>, 
 Philipp Zabel <p.zabel@pengutronix.de>
Cc: linux-phy@lists.infradead.org, linux-kernel@vger.kernel.org, 
 gregory.clement@bootlin.com, theo.lebrun@bootlin.com, 
 thomas.petazzoni@bootlin.com, u-kumar1@ti.com, 
 Thomas Richard <thomas.richard@bootlin.com>

The wiz_clock_init() function mixes probe and hardware configuration.
Rename the wiz_clock_init() to wiz_clock_probe() and move the hardware
configuration part in a new function named wiz_clock_init().

This hardware configuration sequence must be called during the resume
stage of the driver.

Signed-off-by: Thomas Richard <thomas.richard@bootlin.com>
---
 drivers/phy/ti/phy-j721e-wiz.c | 66 +++++++++++++++++++++++-------------------
 1 file changed, 37 insertions(+), 29 deletions(-)

diff --git a/drivers/phy/ti/phy-j721e-wiz.c b/drivers/phy/ti/phy-j721e-wiz.c
index 5fea4df9404e..ba670109e7ad 100644
--- a/drivers/phy/ti/phy-j721e-wiz.c
+++ b/drivers/phy/ti/phy-j721e-wiz.c
@@ -1076,26 +1076,12 @@ static int wiz_clock_register(struct wiz *wiz)
 	return ret;
 }
 
-static int wiz_clock_init(struct wiz *wiz, struct device_node *node)
+static void wiz_clock_init(struct wiz *wiz)
 {
-	const struct wiz_clk_mux_sel *clk_mux_sel = wiz->clk_mux_sel;
-	struct device *dev = wiz->dev;
-	struct device_node *clk_node;
-	const char *node_name;
 	unsigned long rate;
-	struct clk *clk;
-	int ret;
-	int i;
-
-	clk = devm_clk_get(dev, "core_ref_clk");
-	if (IS_ERR(clk))
-		return dev_err_probe(dev, PTR_ERR(clk),
-				     "core_ref_clk clock not found\n");
 
-	wiz->input_clks[WIZ_CORE_REFCLK] = clk;
-
-	rate = clk_get_rate(clk);
-	if (rate >= 100000000)
+	rate = clk_get_rate(wiz->input_clks[WIZ_CORE_REFCLK]);
+	if (rate >= REF_CLK_100MHZ)
 		regmap_field_write(wiz->pma_cmn_refclk_int_mode, 0x1);
 	else
 		regmap_field_write(wiz->pma_cmn_refclk_int_mode, 0x3);
@@ -1119,6 +1105,38 @@ static int wiz_clock_init(struct wiz *wiz, struct device_node *node)
 		break;
 	}
 
+	if (wiz->input_clks[WIZ_CORE_REFCLK1]) {
+		rate = clk_get_rate(wiz->input_clks[WIZ_CORE_REFCLK1]);
+		if (rate >= REF_CLK_100MHZ)
+			regmap_field_write(wiz->pma_cmn_refclk1_int_mode, 0x1);
+		else
+			regmap_field_write(wiz->pma_cmn_refclk1_int_mode, 0x3);
+	}
+
+	rate = clk_get_rate(wiz->input_clks[WIZ_EXT_REFCLK]);
+	if (rate >= REF_CLK_100MHZ)
+		regmap_field_write(wiz->pma_cmn_refclk_mode, 0x0);
+	else
+		regmap_field_write(wiz->pma_cmn_refclk_mode, 0x2);
+}
+
+static int wiz_clock_probe(struct wiz *wiz, struct device_node *node)
+{
+	const struct wiz_clk_mux_sel *clk_mux_sel = wiz->clk_mux_sel;
+	struct device *dev = wiz->dev;
+	struct device_node *clk_node;
+	const char *node_name;
+	struct clk *clk;
+	int ret;
+	int i;
+
+	clk = devm_clk_get(dev, "core_ref_clk");
+	if (IS_ERR(clk))
+		return dev_err_probe(dev, PTR_ERR(clk),
+				     "core_ref_clk clock not found\n");
+
+	wiz->input_clks[WIZ_CORE_REFCLK] = clk;
+
 	if (wiz->data->pma_cmn_refclk1_int_mode) {
 		clk = devm_clk_get(dev, "core_ref1_clk");
 		if (IS_ERR(clk))
@@ -1126,12 +1144,6 @@ static int wiz_clock_init(struct wiz *wiz, struct device_node *node)
 					     "core_ref1_clk clock not found\n");
 
 		wiz->input_clks[WIZ_CORE_REFCLK1] = clk;
-
-		rate = clk_get_rate(clk);
-		if (rate >= 100000000)
-			regmap_field_write(wiz->pma_cmn_refclk1_int_mode, 0x1);
-		else
-			regmap_field_write(wiz->pma_cmn_refclk1_int_mode, 0x3);
 	}
 
 	clk = devm_clk_get(dev, "ext_ref_clk");
@@ -1141,11 +1153,7 @@ static int wiz_clock_init(struct wiz *wiz, struct device_node *node)
 
 	wiz->input_clks[WIZ_EXT_REFCLK] = clk;
 
-	rate = clk_get_rate(clk);
-	if (rate >= 100000000)
-		regmap_field_write(wiz->pma_cmn_refclk_mode, 0x0);
-	else
-		regmap_field_write(wiz->pma_cmn_refclk_mode, 0x2);
+	wiz_clock_init(wiz);
 
 	switch (wiz->type) {
 	case AM64_WIZ_10G:
@@ -1589,7 +1597,7 @@ static int wiz_probe(struct platform_device *pdev)
 		goto err_get_sync;
 	}
 
-	ret = wiz_clock_init(wiz, node);
+	ret = wiz_clock_probe(wiz, node);
 	if (ret < 0) {
 		dev_warn(dev, "Failed to initialize clocks\n");
 		goto err_get_sync;

-- 
2.39.2