Commit 118c0002 authored by Daniel Machon's avatar Daniel Machon Committed by Claudiu Beznea
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clk: lan966x: prepare driver for lan969x support 



In preparation for lan969x support, add private match data for lan966x
and add variables for: peripheral clock names, clock gate names, number
of total clocks and number of generic clocks. Use the variables
throughout.

Signed-off-by: default avatarDaniel Machon <daniel.machon@microchip.com>
Link: https://lore.kernel.org/r/20240916-lan969x-clock-v1-3-0e150336074d@microchip.com


[claudiu.beznea: in lan966x_clk_probe(): keep struct_size() arguments on
 a single line]
Signed-off-by: default avatarClaudiu Beznea <claudiu.beznea@tuxon.dev>
parent 6049fa17

drivers/clk/clk-lan966x.c

+39 −16
Original line number Diff line number Diff line
@@ -24,7 +24,7 @@ 


#define DIV_MAX		255



static const char * const clk_names[N_CLOCKS] = {

static const char * const lan966x_clk_names[] = {

	"qspi0", "qspi1", "qspi2", "sdmmc0",

	"pi", "mcan0", "mcan1", "flexcom0",

	"flexcom1", "flexcom2", "flexcom3",
@@ -53,7 +53,7 @@ struct clk_gate_soc_desc { 
	int bit_idx;

};



static const struct clk_gate_soc_desc clk_gate_desc[] = {

static const struct clk_gate_soc_desc lan966x_clk_gate_desc[] = {

	{ "uhphs", 11 },

	{ "udphs", 10 },

	{ "mcramc", 9 },
@@ -61,6 +61,22 @@ static const struct clk_gate_soc_desc clk_gate_desc[] = { 
	{ }

};



struct lan966x_match_data {

	char *name;

	const char * const *clk_name;

	const struct clk_gate_soc_desc *clk_gate_desc;

	u8 num_generic_clks;

	u8 num_total_clks;

};



static struct lan966x_match_data lan966x_desc = {

	.name = "lan966x",

	.clk_name = lan966x_clk_names,

	.clk_gate_desc = lan966x_clk_gate_desc,

	.num_total_clks = 18,

	.num_generic_clks = 14,

};



static DEFINE_SPINLOCK(clk_gate_lock);

static void __iomem *base;
@@ -186,24 +202,26 @@ static struct clk_hw *lan966x_gck_clk_register(struct device *dev, int i) 
};



static int lan966x_gate_clk_register(struct device *dev,

				     const struct lan966x_match_data *data,

				     struct clk_hw_onecell_data *hw_data,

				     void __iomem *gate_base)

{

	int i;

	for (int i = data->num_generic_clks; i < data->num_total_clks; ++i) {

		int idx = i - data->num_generic_clks;

		const struct clk_gate_soc_desc *desc;



	for (i = GCK_GATE_UHPHS; i < N_CLOCKS; ++i) {

		int idx = i - GCK_GATE_UHPHS;

		desc = &data->clk_gate_desc[idx];



		hw_data->hws[i] =

			devm_clk_hw_register_gate(dev, clk_gate_desc[idx].name,

						  "lan966x", 0, gate_base,

						  clk_gate_desc[idx].bit_idx,

			devm_clk_hw_register_gate(dev, desc->name,

						  data->name, 0, gate_base,

						  desc->bit_idx,

						  0, &clk_gate_lock);



		if (IS_ERR(hw_data->hws[i]))

			return dev_err_probe(dev, PTR_ERR(hw_data->hws[i]),

					     "failed to register %s clock\n",

					     clk_gate_desc[idx].name);

					     desc->name);

	}



	return 0;
@@ -211,13 +229,18 @@ static int lan966x_gate_clk_register(struct device *dev, 


static int lan966x_clk_probe(struct platform_device *pdev)

{

	const struct lan966x_match_data *data;

	struct clk_hw_onecell_data *hw_data;

	struct device *dev = &pdev->dev;

	void __iomem *gate_base;

	struct resource *res;

	int i, ret;



	hw_data = devm_kzalloc(dev, struct_size(hw_data, hws, N_CLOCKS),

	data = device_get_match_data(dev);

	if (!data)

		return -EINVAL;



	hw_data = devm_kzalloc(dev, struct_size(hw_data, hws, data->num_total_clks),

			       GFP_KERNEL);

	if (!hw_data)

		return -ENOMEM;
@@ -228,10 +251,10 @@ static int lan966x_clk_probe(struct platform_device *pdev) 


	init.ops = &lan966x_gck_ops;



	hw_data->num = GCK_GATE_UHPHS;

	hw_data->num = data->num_generic_clks;



	for (i = 0; i < GCK_GATE_UHPHS; i++) {

		init.name = clk_names[i];

	for (i = 0; i < data->num_generic_clks; i++) {

		init.name = data->clk_name[i];

		hw_data->hws[i] = lan966x_gck_clk_register(dev, i);

		if (IS_ERR(hw_data->hws[i])) {

			dev_err(dev, "failed to register %s clock\n",
@@ -246,9 +269,9 @@ static int lan966x_clk_probe(struct platform_device *pdev) 
		if (IS_ERR(gate_base))

			return PTR_ERR(gate_base);



		hw_data->num = N_CLOCKS;

		hw_data->num = data->num_total_clks;



		ret = lan966x_gate_clk_register(dev, hw_data, gate_base);

		ret = lan966x_gate_clk_register(dev, data, hw_data, gate_base);

		if (ret)

			return ret;

	}
@@ -257,7 +280,7 @@ static int lan966x_clk_probe(struct platform_device *pdev) 
}



static const struct of_device_id lan966x_clk_dt_ids[] = {

	{ .compatible = "microchip,lan966x-gck", },

	{ .compatible = "microchip,lan966x-gck", .data = &lan966x_desc },

	{ }

};

MODULE_DEVICE_TABLE(of, lan966x_clk_dt_ids);