path: root/drivers/clk/at91/dt-compat.c

// SPDX-License-Identifier: GPL-2.0
#include <linux/clk-provider.h>
#include <linux/clk/at91_pmc.h>
#include <linux/of.h>
#include <linux/mfd/syscon.h>
#include <linux/regmap.h>
#include <linux/slab.h>

#include "pmc.h"

#define MASTER_SOURCE_MAX	4

#define PERIPHERAL_AT91RM9200	0
#define PERIPHERAL_AT91SAM9X5	1

#define PERIPHERAL_MAX		64

#define PERIPHERAL_ID_MIN	2

#define PROG_SOURCE_MAX		5
#define PROG_ID_MAX		7

#define SYSTEM_MAX_ID		31

#define GCK_INDEX_DT_AUDIO_PLL	5

static DEFINE_SPINLOCK(mck_lock);

#ifdef CONFIG_HAVE_AT91_AUDIO_PLL
static void __init of_sama5d2_clk_audio_pll_frac_setup(struct device_node *np)
{
	struct clk_hw *hw;
	const char *name = np->name;
	const char *parent_name;
	struct regmap *regmap;
	struct device_node *parent_np;

	parent_np = of_get_parent(np);
	regmap = syscon_node_to_regmap(parent_np);
	of_node_put(parent_np);
	if (IS_ERR(regmap))
		return;

	parent_name = of_clk_get_parent_name(np, 0);

	hw = at91_clk_register_audio_pll_frac(regmap, name, parent_name);
	if (IS_ERR(hw))
		return;

	of_clk_add_hw_provider(np, of_clk_hw_simple_get, hw);
}
CLK_OF_DECLARE(of_sama5d2_clk_audio_pll_frac_setup,
	       "atmel,sama5d2-clk-audio-pll-frac",
	       of_sama5d2_clk_audio_pll_frac_setup);

static void __init of_sama5d2_clk_audio_pll_pad_setup(struct device_node *np)
{
	struct clk_hw *hw;
	const char *name = np->name;
	const char *parent_name;
	struct regmap *regmap;
	struct device_node *parent_np;

	parent_np = of_get_parent(np);
	regmap = syscon_node_to_regmap(parent_np);
	of_node_put(parent_np);
	if (IS_ERR(regmap))
		return;

	parent_name = of_clk_get_parent_name(np, 0);

	hw = at91_clk_register_audio_pll_pad(regmap, name, parent_name);
	if (IS_ERR(hw))
		return;

	of_clk_add_hw_provider(np, of_clk_hw_simple_get, hw);
}
CLK_OF_DECLARE(of_sama5d2_clk_audio_pll_pad_setup,
	       "atmel,sama5d2-clk-audio-pll-pad",
	       of_sama5d2_clk_audio_pll_pad_setup);

static void __init of_sama5d2_clk_audio_pll_pmc_setup(struct device_node *np)
{
	struct clk_hw *hw;
	const char *name = np->name;
	const char *parent_name;
	struct regmap *regmap;
	struct device_node *parent_np;

	parent_np = of_get_parent(np);
	regmap = syscon_node_to_regmap(parent_np);
	of_node_put(parent_np);
	if (IS_ERR(regmap))
		return;

	parent_name = of_clk_get_parent_name(np, 0);

	hw = at91_clk_register_audio_pll_pmc(regmap, name, parent_name);
	if (IS_ERR(hw))
		return;

	of_clk_add_hw_provider(np, of_clk_hw_simple_get, hw);
}
CLK_OF_DECLARE(of_sama5d2_clk_audio_pll_pmc_setup,
	       "atmel,sama5d2-clk-audio-pll-pmc",
	       of_sama5d2_clk_audio_pll_pmc_setup);
#endif /* CONFIG_HAVE_AT91_AUDIO_PLL */

static const struct clk_pcr_layout dt_pcr_layout = {
	.offset = 0x10c,
	.cmd = BIT(12),
	.pid_mask = GENMASK(5, 0),
	.div_mask = GENMASK(17, 16),
	.gckcss_mask = GENMASK(10, 8),
};

#ifdef CONFIG_HAVE_AT91_GENERATED_CLK
#define GENERATED_SOURCE_MAX	6

#define GCK_ID_I2S0		54
#define GCK_ID_I2S1		55
#define GCK_ID_CLASSD		59

static void __init of_sama5d2_clk_generated_setup(struct device_node *np)
{
	int num;
	u32 id;
	const char *name;
	struct clk_hw *hw;
	unsigned int num_parents;
	const char *parent_names[GENERATED_SOURCE_MAX];
	struct device_node *gcknp, *parent_np;
	struct clk_range range = CLK_RANGE(0, 0);
	struct regmap *regmap;

	num_parents = of_clk_get_parent_count(np);
	if (num_parents == 0 || num_parents > GENERATED_SOURCE_MAX)</