drivers/clk/mediatek/clk-mt6765-audio.c

root/drivers/clk/mediatek/clk-mt6765-audio.c
// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2018 MediaTek Inc.
 * Author: Owen Chen <owen.chen@mediatek.com>
 */

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

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

#include <dt-bindings/clock/mt6765-clk.h>

static const struct mtk_gate_regs audio0_cg_regs = {
        .set_ofs = 0x0,
        .clr_ofs = 0x0,
        .sta_ofs = 0x0,
};

static const struct mtk_gate_regs audio1_cg_regs = {
        .set_ofs = 0x4,
        .clr_ofs = 0x4,
        .sta_ofs = 0x4,
};

#define GATE_AUDIO0(_id, _name, _parent, _shift)                \
        GATE_MTK(_id, _name, _parent, &audio0_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr)

#define GATE_AUDIO1(_id, _name, _parent, _shift)                \
        GATE_MTK(_id, _name, _parent, &audio1_cg_regs, _shift, &mtk_clk_gate_ops_no_setclr)

static const struct mtk_gate audio_clks[] = {
        /* AUDIO0 */
        GATE_AUDIO0(CLK_AUDIO_AFE, "aud_afe", "audio_ck", 2),
        GATE_AUDIO0(CLK_AUDIO_22M, "aud_22m", "aud_engen1_ck", 8),
        GATE_AUDIO0(CLK_AUDIO_APLL_TUNER, "aud_apll_tuner",
                    "aud_engen1_ck", 19),
        GATE_AUDIO0(CLK_AUDIO_ADC, "aud_adc", "audio_ck", 24),
        GATE_AUDIO0(CLK_AUDIO_DAC, "aud_dac", "audio_ck", 25),
        GATE_AUDIO0(CLK_AUDIO_DAC_PREDIS, "aud_dac_predis",
                    "audio_ck", 26),
        GATE_AUDIO0(CLK_AUDIO_TML, "aud_tml", "audio_ck", 27),
        /* AUDIO1 */
        GATE_AUDIO1(CLK_AUDIO_I2S1_BCLK, "aud_i2s1_bclk",
                    "audio_ck", 4),
        GATE_AUDIO1(CLK_AUDIO_I2S2_BCLK, "aud_i2s2_bclk",
                    "audio_ck", 5),
        GATE_AUDIO1(CLK_AUDIO_I2S3_BCLK, "aud_i2s3_bclk",
                    "audio_ck", 6),
        GATE_AUDIO1(CLK_AUDIO_I2S4_BCLK, "aud_i2s4_bclk",
                    "audio_ck", 7),
};

static const struct mtk_clk_desc audio_desc = {
        .clks = audio_clks,
        .num_clks = ARRAY_SIZE(audio_clks),
};

static const struct of_device_id of_match_clk_mt6765_audio[] = {
        {
                .compatible = "mediatek,mt6765-audsys",
                .data = &audio_desc,
        }, {
                /* sentinel */
        }
};
MODULE_DEVICE_TABLE(of, of_match_clk_mt6765_audio);

static struct platform_driver clk_mt6765_audio_drv = {
        .probe = mtk_clk_simple_probe,
        .remove = mtk_clk_simple_remove,
        .driver = {
                .name = "clk-mt6765-audio",
                .of_match_table = of_match_clk_mt6765_audio,
        },
};
module_platform_driver(clk_mt6765_audio_drv);

MODULE_DESCRIPTION("MediaTek MT6765 audio clocks driver");
MODULE_LICENSE("GPL");
Linux
