linux-kernel - [PATCH v3 06/10] clk: clock-wizard: Remove the hardcoding of the clock outputs

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Message-Id: <4b69f5ba64b68b388ab1e1a0c5896536b063da74.1574922435.git.shubhrajyoti.datta@xilinx.com>
Date:   Thu, 28 Nov 2019 12:06:13 +0530
From:   shubhrajyoti.datta@...il.com
To:     linux-clk@...r.kernel.org, linux-kernel@...r.kernel.org,
        devel@...verdev.osuosl.org
Cc:     gregkh@...uxfoundation.org, mturquette@...libre.com,
        sboyd@...nel.org, robh+dt@...nel.org, mark.rutland@....com,
        shubhrajyoti.datta@...il.com, devicetree@...r.kernel.org,
        soren.brinkmann@...inx.com,
        Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
Subject: [PATCH v3 06/10] clk: clock-wizard: Remove the hardcoding of the clock outputs

From: Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>

The number of output clocks are configurable in the hardware.
Currently the driver registers the maximum number of outputs.
Fix the same by registering only the outputs that are there.

Signed-off-by: Shubhrajyoti Datta <shubhrajyoti.datta@...inx.com>
---
 drivers/clk/clk-xlnx-clock-wizard.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/clk/clk-xlnx-clock-wizard.c b/drivers/clk/clk-xlnx-clock-wizard.c
index bc0354a..4c6155b 100644
--- a/drivers/clk/clk-xlnx-clock-wizard.c
+++ b/drivers/clk/clk-xlnx-clock-wizard.c
@@ -493,6 +493,7 @@ static int clk_wzrd_probe(struct platform_device *pdev)
 	const char *clk_name;
 	struct clk_wzrd *clk_wzrd;
 	struct resource *mem;
+	int outputs;
 	struct device_node *np = pdev->dev.of_node;
 
 	clk_wzrd = devm_kzalloc(&pdev->dev, sizeof(*clk_wzrd), GFP_KERNEL);
@@ -583,7 +584,7 @@ static int clk_wzrd_probe(struct platform_device *pdev)
 	}
 
 	/* register div per output */
-	for (i = WZRD_NUM_OUTPUTS - 1; i >= 0 ; i--) {
+	for (i = outputs - 1; i >= 0 ; i--) {
 		const char *clkout_name;
 
 		if (of_property_read_string_index(np, "clock-output-names", i,
@@ -614,7 +615,7 @@ static int clk_wzrd_probe(struct platform_device *pdev)
 		if (IS_ERR(clk_wzrd->clkout[i])) {
 			int j;
 
-			for (j = i + 1; j < WZRD_NUM_OUTPUTS; j++)
+			for (j = i + 1; j < outputs; j++)
 				clk_unregister(clk_wzrd->clkout[j]);
 			dev_err(&pdev->dev,
 				"unable to register divider clock\n");
-- 
2.1.1