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Message-ID: <20240831111056.3864-4-hpausten@protonmail.com>
Date: Sat, 31 Aug 2024 11:13:05 +0000
From: Harry Austen <hpausten@...tonmail.com>
To: Michael Turquette <mturquette@...libre.com>, Stephen Boyd <sboyd@...nel.org>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Michal Simek <michal.simek@....com>
Cc: Shubhrajyoti Datta <shubhrajyoti.datta@....com>, linux-clk@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, Harry Austen <hpausten@...tonmail.com>
Subject: [PATCH 3/6] clk: clocking-wizard: use devres versions of clk_hw API
Use device managed versions of the clk_hw API, entirely removing the
need for the driver's remove() callback and greatly simplifying the
probe() function's error paths.
Signed-off-by: Harry Austen <hpausten@...tonmail.com>
---
drivers/clk/xilinx/clk-xlnx-clock-wizard.c | 52 +++++-----------------
1 file changed, 11 insertions(+), 41 deletions(-)
diff --git a/drivers/clk/xilinx/clk-xlnx-clock-wizard.c b/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
index cd795a4952099..f332e0eee56c8 100644
--- a/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
+++ b/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
@@ -1082,7 +1082,7 @@ static int clk_wzrd_probe(struct platform_device *pdev)
clk_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_mul", dev_name(&pdev->dev));
if (!clk_name)
return -ENOMEM;
- clk_wzrd->clks_internal[wzrd_clk_mul] = clk_hw_register_fixed_factor
+ clk_wzrd->clks_internal[wzrd_clk_mul] = devm_clk_hw_register_fixed_factor
(&pdev->dev, clk_name,
__clk_get_name(clk_wzrd->clk_in1),
0, mult, div);
@@ -1092,10 +1092,8 @@ static int clk_wzrd_probe(struct platform_device *pdev)
}
clk_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_mul_div", dev_name(&pdev->dev));
- if (!clk_name) {
- ret = -ENOMEM;
- goto err_rm_int_clk;
- }
+ if (!clk_name)
+ return -ENOMEM;
if (is_versal) {
edged = !!(readl(clk_wzrd->base + WZRD_CLK_CFG_REG(is_versal, 20)) &
@@ -1110,11 +1108,11 @@ static int clk_wzrd_probe(struct platform_device *pdev)
clk_mul_name = clk_hw_get_name(clk_wzrd->clks_internal[wzrd_clk_mul]);
clk_wzrd->clks_internal[wzrd_clk_mul_div] =
- clk_hw_register_fixed_factor(&pdev->dev, clk_name,
- clk_mul_name, 0, 1, div);
+ devm_clk_hw_register_fixed_factor(&pdev->dev, clk_name,
+ clk_mul_name, 0, 1, div);
} else {
ctrl_reg = clk_wzrd->base + WZRD_CLK_CFG_REG(is_versal, 0);
- clk_wzrd->clks_internal[wzrd_clk_mul_div] = clk_hw_register_divider
+ clk_wzrd->clks_internal[wzrd_clk_mul_div] = devm_clk_hw_register_divider
(&pdev->dev, clk_name,
clk_hw_get_name(clk_wzrd->clks_internal[wzrd_clk_mul]),
flags, ctrl_reg, 0, 8, CLK_DIVIDER_ONE_BASED |
@@ -1122,18 +1120,15 @@ static int clk_wzrd_probe(struct platform_device *pdev)
}
if (IS_ERR(clk_wzrd->clks_internal[wzrd_clk_mul_div])) {
dev_err(&pdev->dev, "unable to register divider clock\n");
- ret = PTR_ERR(clk_wzrd->clks_internal[wzrd_clk_mul_div]);
- goto err_rm_int_clk;
+ return PTR_ERR(clk_wzrd->clks_internal[wzrd_clk_mul_div]);
}
/* register div per output */
for (i = nr_outputs - 1; i >= 0 ; i--) {
clkout_name = devm_kasprintf(&pdev->dev, GFP_KERNEL,
"%s_out%d", dev_name(&pdev->dev), i);
- if (!clkout_name) {
- ret = -ENOMEM;
- goto err_rm_int_clk;
- }
+ if (!clkout_name)
+ return -ENOMEM;
if (is_versal) {
clk_wzrd->clk_data.hws[i] = clk_wzrd_ver_register_divider
@@ -1165,20 +1160,15 @@ static int clk_wzrd_probe(struct platform_device *pdev)
DIV_O, &clkwzrd_lock);
}
if (IS_ERR(clk_wzrd->clk_data.hws[i])) {
- int j;
-
- for (j = i + 1; j < nr_outputs; j++)
- clk_hw_unregister(clk_wzrd->clk_data.hws[j]);
dev_err(&pdev->dev,
"unable to register divider clock\n");
- ret = PTR_ERR(clk_wzrd->clk_data.hws[i]);
- goto err_rm_int_clks;
+ return PTR_ERR(clk_wzrd->clk_data.hws[i]);
}
}
out:
clk_wzrd->clk_data.num = nr_outputs;
- ret = of_clk_add_hw_provider(pdev->dev.of_node, of_clk_hw_onecell_get, &clk_wzrd->clk_data);
+ ret = devm_of_clk_add_hw_provider(&pdev->dev, of_clk_hw_onecell_get, &clk_wzrd->clk_data);
if (ret) {
dev_err(&pdev->dev, "unable to register clock provider\n");
return ret;
@@ -1201,25 +1191,6 @@ static int clk_wzrd_probe(struct platform_device *pdev)
}
return 0;
-
-err_rm_int_clks:
- clk_hw_unregister(clk_wzrd->clks_internal[1]);
-err_rm_int_clk:
- clk_hw_unregister(clk_wzrd->clks_internal[0]);
- return ret;
-}
-
-static void clk_wzrd_remove(struct platform_device *pdev)
-{
- int i;
- struct clk_wzrd *clk_wzrd = platform_get_drvdata(pdev);
-
- of_clk_del_provider(pdev->dev.of_node);
-
- for (i = 0; i < WZRD_NUM_OUTPUTS; i++)
- clk_hw_unregister(clk_wzrd->clk_data.hws[i]);
- for (i = 0; i < wzrd_clk_int_max; i++)
- clk_hw_unregister(clk_wzrd->clks_internal[i]);
}
static const struct of_device_id clk_wzrd_ids[] = {
@@ -1238,7 +1209,6 @@ static struct platform_driver clk_wzrd_driver = {
.pm = &clk_wzrd_dev_pm_ops,
},
.probe = clk_wzrd_probe,
- .remove_new = clk_wzrd_remove,
};
module_platform_driver(clk_wzrd_driver);
--
2.46.0
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