[PATCH v2 2/6] clk: clocking-wizard: use newer clk_hw API

From: Harry Austen
Date: Fri Sep 13 2024 - 15:11:56 EST

Next message: Harry Austen: "[PATCH v2 3/6] clk: clocking-wizard: use devres versions of clk_hw API"
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Utilise clock provider API with struct clk_hw instances instead of the
consumer-side struct clk.

Signed-off-by: Harry Austen <hpausten@xxxxxxxxxxxxxx>
---
v1 -> v2: No change

drivers/clk/xilinx/clk-xlnx-clock-wizard.c | 77 +++++++++++-----------
1 file changed, 40 insertions(+), 37 deletions(-)

diff --git a/drivers/clk/xilinx/clk-xlnx-clock-wizard.c b/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
index 0ca045849ea3e..cd795a4952099 100644
--- a/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
+++ b/drivers/clk/xilinx/clk-xlnx-clock-wizard.c
@@ -17,6 +17,7 @@
#include <linux/of.h>
#include <linux/math64.h>
#include <linux/module.h>
+#include <linux/overflow.h>
#include <linux/err.h>
#include <linux/iopoll.h>

@@ -121,26 +122,24 @@ enum clk_wzrd_int_clks {
/**
* struct clk_wzrd - Clock wizard private data structure
*
- * @clk_data: Clock data
* @nb: Notifier block
* @base: Memory base
* @clk_in1: Handle to input clock 'clk_in1'
* @axi_clk: Handle to input clock 's_axi_aclk'
* @clks_internal: Internal clocks
- * @clkout: Output clocks
* @speed_grade: Speed grade of the device
* @suspended: Flag indicating power state of the device
+ * @clk_data: Output clock data
*/
struct clk_wzrd {
- struct clk_onecell_data clk_data;
struct notifier_block nb;
void __iomem *base;
struct clk *clk_in1;
struct clk *axi_clk;
- struct clk *clks_internal[wzrd_clk_int_max];
- struct clk *clkout[WZRD_NUM_OUTPUTS];
+ struct clk_hw *clks_internal[wzrd_clk_int_max];
unsigned int speed_grade;
bool suspended;
+ struct clk_hw_onecell_data clk_data;
};

/**
@@ -765,7 +764,7 @@ static const struct clk_ops clk_wzrd_clk_divider_ops_f = {
.recalc_rate = clk_wzrd_recalc_ratef,
};

-static struct clk *clk_wzrd_register_divf(struct device *dev,
+static struct clk_hw *clk_wzrd_register_divf(struct device *dev,
const char *name,
const char *parent_name,
unsigned long flags,
@@ -805,10 +804,10 @@ static struct clk *clk_wzrd_register_divf(struct device *dev,
if (ret)
return ERR_PTR(ret);

- return hw->clk;
+ return hw;
}

-static struct clk *clk_wzrd_ver_register_divider(struct device *dev,
+static struct clk_hw *clk_wzrd_ver_register_divider(struct device *dev,
const char *name,
const char *parent_name,
unsigned long flags,
@@ -852,10 +851,10 @@ static struct clk *clk_wzrd_ver_register_divider(struct device *dev,
if (ret)
return ERR_PTR(ret);

- return hw->clk;
+ return hw;
}

-static struct clk *clk_wzrd_register_divider(struct device *dev,
+static struct clk_hw *clk_wzrd_register_divider(struct device *dev,
const char *name,
const char *parent_name,
unsigned long flags,
@@ -898,7 +897,7 @@ static struct clk *clk_wzrd_register_divider(struct device *dev,
if (ret)
return ERR_PTR(ret);

- return hw->clk;
+ return hw;
}

static int clk_wzrd_clk_notifier(struct notifier_block *nb, unsigned long event,
@@ -978,7 +977,12 @@ static int clk_wzrd_probe(struct platform_device *pdev)
int nr_outputs;
int i, ret;

- clk_wzrd = devm_kzalloc(&pdev->dev, sizeof(*clk_wzrd), GFP_KERNEL);
+ ret = of_property_read_u32(np, "xlnx,nr-outputs", &nr_outputs);
+ if (ret || nr_outputs > WZRD_NUM_OUTPUTS)
+ return -EINVAL;
+
+ clk_wzrd = devm_kzalloc(&pdev->dev, struct_size(clk_wzrd, clk_data.hws, nr_outputs),
+ GFP_KERNEL);
if (!clk_wzrd)
return -ENOMEM;
platform_set_drvdata(pdev, clk_wzrd);
@@ -1016,17 +1020,13 @@ static int clk_wzrd_probe(struct platform_device *pdev)
if (data)
is_versal = data->is_versal;

- ret = of_property_read_u32(np, "xlnx,nr-outputs", &nr_outputs);
- if (ret || nr_outputs > WZRD_NUM_OUTPUTS)
- return -EINVAL;
-
clkout_name = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%s_out0", dev_name(&pdev->dev));
if (!clkout_name)
return -ENOMEM;

if (is_versal) {
if (nr_outputs == 1) {
- clk_wzrd->clkout[0] = clk_wzrd_ver_register_divider
+ clk_wzrd->clk_data.hws[0] = clk_wzrd_ver_register_divider
(&pdev->dev, clkout_name,
__clk_get_name(clk_wzrd->clk_in1), 0,
clk_wzrd->base, WZRD_CLK_CFG_REG(is_versal, 3),
@@ -1059,7 +1059,7 @@ static int clk_wzrd_probe(struct platform_device *pdev)
div = 64;
} else {
if (nr_outputs == 1) {
- clk_wzrd->clkout[0] = clk_wzrd_register_divider
+ clk_wzrd->clk_data.hws[0] = clk_wzrd_register_divider
(&pdev->dev, clkout_name,
__clk_get_name(clk_wzrd->clk_in1), 0,
clk_wzrd->base, WZRD_CLK_CFG_REG(is_versal, 3),
@@ -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_register_fixed_factor
+ clk_wzrd->clks_internal[wzrd_clk_mul] = clk_hw_register_fixed_factor
(&pdev->dev, clk_name,
__clk_get_name(clk_wzrd->clk_in1),
0, mult, div);
@@ -1108,15 +1108,15 @@ static int clk_wzrd_probe(struct platform_device *pdev)
if (!div)
div = 1;

- clk_mul_name = __clk_get_name(clk_wzrd->clks_internal[wzrd_clk_mul]);
+ clk_mul_name = clk_hw_get_name(clk_wzrd->clks_internal[wzrd_clk_mul]);
clk_wzrd->clks_internal[wzrd_clk_mul_div] =
- clk_register_fixed_factor(&pdev->dev, clk_name,
- clk_mul_name, 0, 1, div);
+ 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_register_divider
+ clk_wzrd->clks_internal[wzrd_clk_mul_div] = clk_hw_register_divider
(&pdev->dev, clk_name,
- __clk_get_name(clk_wzrd->clks_internal[wzrd_clk_mul]),
+ clk_hw_get_name(clk_wzrd->clks_internal[wzrd_clk_mul]),
flags, ctrl_reg, 0, 8, CLK_DIVIDER_ONE_BASED |
CLK_DIVIDER_ALLOW_ZERO, &clkwzrd_lock);
}
@@ -1136,7 +1136,7 @@ static int clk_wzrd_probe(struct platform_device *pdev)
}

if (is_versal) {
- clk_wzrd->clkout[i] = clk_wzrd_ver_register_divider
+ clk_wzrd->clk_data.hws[i] = clk_wzrd_ver_register_divider
(&pdev->dev,
clkout_name, clk_name, 0,
clk_wzrd->base,
@@ -1148,7 +1148,7 @@ static int clk_wzrd_probe(struct platform_device *pdev)
DIV_O, &clkwzrd_lock);
} else {
if (!i)
- clk_wzrd->clkout[i] = clk_wzrd_register_divf
+ clk_wzrd->clk_data.hws[i] = clk_wzrd_register_divf
(&pdev->dev, clkout_name, clk_name, flags, clk_wzrd->base,
(WZRD_CLK_CFG_REG(is_versal, 2) + i * 12),
WZRD_CLKOUT_DIVIDE_SHIFT,
@@ -1156,7 +1156,7 @@ static int clk_wzrd_probe(struct platform_device *pdev)
CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
DIV_O, &clkwzrd_lock);
else
- clk_wzrd->clkout[i] = clk_wzrd_register_divider
+ clk_wzrd->clk_data.hws[i] = clk_wzrd_register_divider
(&pdev->dev, clkout_name, clk_name, 0, clk_wzrd->base,
(WZRD_CLK_CFG_REG(is_versal, 2) + i * 12),
WZRD_CLKOUT_DIVIDE_SHIFT,
@@ -1164,22 +1164,25 @@ static int clk_wzrd_probe(struct platform_device *pdev)
CLK_DIVIDER_ONE_BASED | CLK_DIVIDER_ALLOW_ZERO,
DIV_O, &clkwzrd_lock);
}
- if (IS_ERR(clk_wzrd->clkout[i])) {
+ if (IS_ERR(clk_wzrd->clk_data.hws[i])) {
int j;

for (j = i + 1; j < nr_outputs; j++)
- clk_unregister(clk_wzrd->clkout[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->clkout[i]);
+ ret = PTR_ERR(clk_wzrd->clk_data.hws[i]);
goto err_rm_int_clks;
}
}

out:
- clk_wzrd->clk_data.clks = clk_wzrd->clkout;
- clk_wzrd->clk_data.clk_num = ARRAY_SIZE(clk_wzrd->clkout);
- of_clk_add_provider(np, of_clk_src_onecell_get, &clk_wzrd->clk_data);
+ 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);
+ if (ret) {
+ dev_err(&pdev->dev, "unable to register clock provider\n");
+ return ret;
+ }

if (clk_wzrd->speed_grade) {
clk_wzrd->nb.notifier_call = clk_wzrd_clk_notifier;
@@ -1200,9 +1203,9 @@ static int clk_wzrd_probe(struct platform_device *pdev)
return 0;

err_rm_int_clks:
- clk_unregister(clk_wzrd->clks_internal[1]);
+ clk_hw_unregister(clk_wzrd->clks_internal[1]);
err_rm_int_clk:
- clk_unregister(clk_wzrd->clks_internal[0]);
+ clk_hw_unregister(clk_wzrd->clks_internal[0]);
return ret;
}

@@ -1214,9 +1217,9 @@ static void clk_wzrd_remove(struct platform_device *pdev)
of_clk_del_provider(pdev->dev.of_node);

for (i = 0; i < WZRD_NUM_OUTPUTS; i++)
- clk_unregister(clk_wzrd->clkout[i]);
+ clk_hw_unregister(clk_wzrd->clk_data.hws[i]);
for (i = 0; i < wzrd_clk_int_max; i++)
- clk_unregister(clk_wzrd->clks_internal[i]);
+ clk_hw_unregister(clk_wzrd->clks_internal[i]);
}

static const struct of_device_id clk_wzrd_ids[] = {
--
2.46.0

Next message: Harry Austen: "[PATCH v2 3/6] clk: clocking-wizard: use devres versions of clk_hw API"
Previous message: Harry Austen: "[PATCH v2 1/6] clk: clocking-wizard: simplify probe/remove with devres helpers"
In reply to: Harry Austen: "[PATCH v2 1/6] clk: clocking-wizard: simplify probe/remove with devres helpers"
Next in thread: Harry Austen: "[PATCH v2 3/6] clk: clocking-wizard: use devres versions of clk_hw API"
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