kernel/drivers/clk/mediatek/clk-mt8192-aud.c

// SPDX-License-Identifier: GPL-2.0-only
//
// Copyright (c) 2021 MediaTek Inc.
// Author: Chun-Jie Chen <chun-jie.chen@mediatek.com>

#include <linux/clk-provider.h>
#include <linux/of_platform.h>
#include <linux/platform_device.h>

#include "clk-mtk.h"
#include "clk-gate.h"

#include <dt-bindings/clock/mt8192-clk.h>

static const struct mtk_gate_regs aud0_cg_regs = {
	.set_ofs = 0x0,
	.clr_ofs = 0x0,
	.sta_ofs = 0x0,
};

static const struct mtk_gate_regs aud1_cg_regs = {
	.set_ofs = 0x4,
	.clr_ofs = 0x4,
	.sta_ofs = 0x4,
};

static const struct mtk_gate_regs aud2_cg_regs = {
	.set_ofs = 0x8,
	.clr_ofs = 0x8,
	.sta_ofs = 0x8,
};

#define GATE_AUD0(_id, _name, _parent, _shift)	\
	GATE_MTK(_id, _name, _parent, &aud0_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr)

#define GATE_AUD1(_id, _name, _parent, _shift)	\
	GATE_MTK(_id, _name, _parent, &aud1_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr)

#define GATE_AUD2(_id, _name, _parent, _shift)	\
	GATE_MTK(_id, _name, _parent, &aud2_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr)

static const struct mtk_gate aud_clks[] = {
	/* AUD0 */
	GATE_AUD0(CLK_AUD_AFE, "aud_afe", "audio_sel", 2),
	GATE_AUD0(CLK_AUD_22M, "aud_22m", "aud_engen1_sel", 8),
	GATE_AUD0(CLK_AUD_24M, "aud_24m", "aud_engen2_sel", 9),
	GATE_AUD0(CLK_AUD_APLL2_TUNER, "aud_apll2_tuner", "aud_engen2_sel", 18),
	GATE_AUD0(CLK_AUD_APLL_TUNER, "aud_apll_tuner", "aud_engen1_sel", 19),
	GATE_AUD0(CLK_AUD_TDM, "aud_tdm", "aud_1_sel", 20),
	GATE_AUD0(CLK_AUD_ADC, "aud_adc", "audio_sel", 24),
	GATE_AUD0(CLK_AUD_DAC, "aud_dac", "audio_sel", 25),
	GATE_AUD0(CLK_AUD_DAC_PREDIS, "aud_dac_predis", "audio_sel", 26),
	GATE_AUD0(CLK_AUD_TML, "aud_tml", "audio_sel", 27),
	GATE_AUD0(CLK_AUD_NLE, "aud_nle", "audio_sel", 28),
	/* AUD1 */
	GATE_AUD1(CLK_AUD_I2S1_B, "aud_i2s1_b", "audio_sel", 4),
	GATE_AUD1(CLK_AUD_I2S2_B, "aud_i2s2_b", "audio_sel", 5),
	GATE_AUD1(CLK_AUD_I2S3_B, "aud_i2s3_b", "audio_sel", 6),
	GATE_AUD1(CLK_AUD_I2S4_B, "aud_i2s4_b", "audio_sel", 7),
	GATE_AUD1(CLK_AUD_CONNSYS_I2S_ASRC, "aud_connsys_i2s_asrc", "audio_sel", 12),
	GATE_AUD1(CLK_AUD_GENERAL1_ASRC, "aud_general1_asrc", "audio_sel", 13),
	GATE_AUD1(CLK_AUD_GENERAL2_ASRC, "aud_general2_asrc", "audio_sel", 14),
	GATE_AUD1(CLK_AUD_DAC_HIRES, "aud_dac_hires", "audio_h_sel", 15),
	GATE_AUD1(CLK_AUD_ADC_HIRES, "aud_adc_hires", "audio_h_sel", 16),
	GATE_AUD1(CLK_AUD_ADC_HIRES_TML, "aud_adc_hires_tml", "audio_h_sel", 17),
	GATE_AUD1(CLK_AUD_ADDA6_ADC, "aud_adda6_adc", "audio_sel", 20),
	GATE_AUD1(CLK_AUD_ADDA6_ADC_HIRES, "aud_adda6_adc_hires", "audio_h_sel", 21),
	GATE_AUD1(CLK_AUD_3RD_DAC, "aud_3rd_dac", "audio_sel", 28),
	GATE_AUD1(CLK_AUD_3RD_DAC_PREDIS, "aud_3rd_dac_predis", "audio_sel", 29),
	GATE_AUD1(CLK_AUD_3RD_DAC_TML, "aud_3rd_dac_tml", "audio_sel", 30),
	GATE_AUD1(CLK_AUD_3RD_DAC_HIRES, "aud_3rd_dac_hires", "audio_h_sel", 31),
	/* AUD2 */
	GATE_AUD2(CLK_AUD_I2S5_B, "aud_i2s5_b", "audio_sel", 0),
	GATE_AUD2(CLK_AUD_I2S6_B, "aud_i2s6_b", "audio_sel", 1),
	GATE_AUD2(CLK_AUD_I2S7_B, "aud_i2s7_b", "audio_sel", 2),
	GATE_AUD2(CLK_AUD_I2S8_B, "aud_i2s8_b", "audio_sel", 3),
	GATE_AUD2(CLK_AUD_I2S9_B, "aud_i2s9_b", "audio_sel", 4),
};

static int clk_mt8192_aud_probe(struct platform_device *pdev)
{
	struct clk_onecell_data *clk_data;
	struct device_node *node = pdev->dev.of_node;
	int r;

	clk_data = mtk_alloc_clk_data(CLK_AUD_NR_CLK);
	if (!clk_data)
		return -ENOMEM;

	r = mtk_clk_register_gates(node, aud_clks, ARRAY_SIZE(aud_clks), clk_data);
	if (r)
		return r;

	r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
	if (r)
		return r;

	r = devm_of_platform_populate(&pdev->dev);
	if (r)
		of_clk_del_provider(node);

	return r;
}

static const struct of_device_id of_match_clk_mt8192_aud[] = {
	{ .compatible = "mediatek,mt8192-audsys", },
	{}
};

static struct platform_driver clk_mt8192_aud_drv = {
	.probe = clk_mt8192_aud_probe,
	.driver = {
		.name = "clk-mt8192-aud",
		.of_match_table = of_match_clk_mt8192_aud,
	},
};

builtin_platform_driver(clk_mt8192_aud_drv);