linux/drivers/clk/mediatek/clk-mt7622-aud.c
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   1/*
   2 * Copyright (c) 2017 MediaTek Inc.
   3 * Author: Chen Zhong <chen.zhong@mediatek.com>
   4 *         Sean Wang <sean.wang@mediatek.com>
   5 *
   6 * This program is free software; you can redistribute it and/or modify
   7 * it under the terms of the GNU General Public License version 2 as
   8 * published by the Free Software Foundation.
   9 *
  10 * This program is distributed in the hope that it will be useful,
  11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 * GNU General Public License for more details.
  14 */
  15
  16#include <linux/clk-provider.h>
  17#include <linux/of.h>
  18#include <linux/of_address.h>
  19#include <linux/of_device.h>
  20#include <linux/platform_device.h>
  21
  22#include "clk-mtk.h"
  23#include "clk-gate.h"
  24
  25#include <dt-bindings/clock/mt7622-clk.h>
  26
  27#define GATE_AUDIO0(_id, _name, _parent, _shift) {      \
  28                .id = _id,                              \
  29                .name = _name,                          \
  30                .parent_name = _parent,                 \
  31                .regs = &audio0_cg_regs,                        \
  32                .shift = _shift,                        \
  33                .ops = &mtk_clk_gate_ops_no_setclr,     \
  34        }
  35
  36#define GATE_AUDIO1(_id, _name, _parent, _shift) {      \
  37                .id = _id,                              \
  38                .name = _name,                          \
  39                .parent_name = _parent,                 \
  40                .regs = &audio1_cg_regs,                        \
  41                .shift = _shift,                        \
  42                .ops = &mtk_clk_gate_ops_no_setclr,     \
  43        }
  44
  45#define GATE_AUDIO2(_id, _name, _parent, _shift) {      \
  46                .id = _id,                              \
  47                .name = _name,                          \
  48                .parent_name = _parent,                 \
  49                .regs = &audio2_cg_regs,                        \
  50                .shift = _shift,                        \
  51                .ops = &mtk_clk_gate_ops_no_setclr,     \
  52        }
  53
  54#define GATE_AUDIO3(_id, _name, _parent, _shift) {      \
  55                .id = _id,                              \
  56                .name = _name,                          \
  57                .parent_name = _parent,                 \
  58                .regs = &audio3_cg_regs,                        \
  59                .shift = _shift,                        \
  60                .ops = &mtk_clk_gate_ops_no_setclr,     \
  61        }
  62
  63static const struct mtk_gate_regs audio0_cg_regs = {
  64        .set_ofs = 0x0,
  65        .clr_ofs = 0x0,
  66        .sta_ofs = 0x0,
  67};
  68
  69static const struct mtk_gate_regs audio1_cg_regs = {
  70        .set_ofs = 0x10,
  71        .clr_ofs = 0x10,
  72        .sta_ofs = 0x10,
  73};
  74
  75static const struct mtk_gate_regs audio2_cg_regs = {
  76        .set_ofs = 0x14,
  77        .clr_ofs = 0x14,
  78        .sta_ofs = 0x14,
  79};
  80
  81static const struct mtk_gate_regs audio3_cg_regs = {
  82        .set_ofs = 0x634,
  83        .clr_ofs = 0x634,
  84        .sta_ofs = 0x634,
  85};
  86
  87static const struct mtk_gate audio_clks[] = {
  88        /* AUDIO0 */
  89        GATE_AUDIO0(CLK_AUDIO_AFE, "audio_afe", "rtc", 2),
  90        GATE_AUDIO0(CLK_AUDIO_HDMI, "audio_hdmi", "apll1_ck_sel", 20),
  91        GATE_AUDIO0(CLK_AUDIO_SPDF, "audio_spdf", "apll1_ck_sel", 21),
  92        GATE_AUDIO0(CLK_AUDIO_APLL, "audio_apll", "apll1_ck_sel", 23),
  93        /* AUDIO1 */
  94        GATE_AUDIO1(CLK_AUDIO_I2SIN1, "audio_i2sin1", "a1sys_hp_sel", 0),
  95        GATE_AUDIO1(CLK_AUDIO_I2SIN2, "audio_i2sin2", "a1sys_hp_sel", 1),
  96        GATE_AUDIO1(CLK_AUDIO_I2SIN3, "audio_i2sin3", "a1sys_hp_sel", 2),
  97        GATE_AUDIO1(CLK_AUDIO_I2SIN4, "audio_i2sin4", "a1sys_hp_sel", 3),
  98        GATE_AUDIO1(CLK_AUDIO_I2SO1, "audio_i2so1", "a1sys_hp_sel", 6),
  99        GATE_AUDIO1(CLK_AUDIO_I2SO2, "audio_i2so2", "a1sys_hp_sel", 7),
 100        GATE_AUDIO1(CLK_AUDIO_I2SO3, "audio_i2so3", "a1sys_hp_sel", 8),
 101        GATE_AUDIO1(CLK_AUDIO_I2SO4, "audio_i2so4", "a1sys_hp_sel", 9),
 102        GATE_AUDIO1(CLK_AUDIO_ASRCI1, "audio_asrci1", "asm_h_sel", 12),
 103        GATE_AUDIO1(CLK_AUDIO_ASRCI2, "audio_asrci2", "asm_h_sel", 13),
 104        GATE_AUDIO1(CLK_AUDIO_ASRCO1, "audio_asrco1", "asm_h_sel", 14),
 105        GATE_AUDIO1(CLK_AUDIO_ASRCO2, "audio_asrco2", "asm_h_sel", 15),
 106        GATE_AUDIO1(CLK_AUDIO_INTDIR, "audio_intdir", "intdir_sel", 20),
 107        GATE_AUDIO1(CLK_AUDIO_A1SYS, "audio_a1sys", "a1sys_hp_sel", 21),
 108        GATE_AUDIO1(CLK_AUDIO_A2SYS, "audio_a2sys", "a2sys_hp_sel", 22),
 109        GATE_AUDIO1(CLK_AUDIO_AFE_CONN, "audio_afe_conn", "a1sys_hp_sel", 23),
 110        /* AUDIO2 */
 111        GATE_AUDIO2(CLK_AUDIO_UL1, "audio_ul1", "a1sys_hp_sel", 0),
 112        GATE_AUDIO2(CLK_AUDIO_UL2, "audio_ul2", "a1sys_hp_sel", 1),
 113        GATE_AUDIO2(CLK_AUDIO_UL3, "audio_ul3", "a1sys_hp_sel", 2),
 114        GATE_AUDIO2(CLK_AUDIO_UL4, "audio_ul4", "a1sys_hp_sel", 3),
 115        GATE_AUDIO2(CLK_AUDIO_UL5, "audio_ul5", "a1sys_hp_sel", 4),
 116        GATE_AUDIO2(CLK_AUDIO_UL6, "audio_ul6", "a1sys_hp_sel", 5),
 117        GATE_AUDIO2(CLK_AUDIO_DL1, "audio_dl1", "a1sys_hp_sel", 6),
 118        GATE_AUDIO2(CLK_AUDIO_DL2, "audio_dl2", "a1sys_hp_sel", 7),
 119        GATE_AUDIO2(CLK_AUDIO_DL3, "audio_dl3", "a1sys_hp_sel", 8),
 120        GATE_AUDIO2(CLK_AUDIO_DL4, "audio_dl4", "a1sys_hp_sel", 9),
 121        GATE_AUDIO2(CLK_AUDIO_DL5, "audio_dl5", "a1sys_hp_sel", 10),
 122        GATE_AUDIO2(CLK_AUDIO_DL6, "audio_dl6", "a1sys_hp_sel", 11),
 123        GATE_AUDIO2(CLK_AUDIO_DLMCH, "audio_dlmch", "a1sys_hp_sel", 12),
 124        GATE_AUDIO2(CLK_AUDIO_ARB1, "audio_arb1", "a1sys_hp_sel", 13),
 125        GATE_AUDIO2(CLK_AUDIO_AWB, "audio_awb", "a1sys_hp_sel", 14),
 126        GATE_AUDIO2(CLK_AUDIO_AWB2, "audio_awb2", "a1sys_hp_sel", 15),
 127        GATE_AUDIO2(CLK_AUDIO_DAI, "audio_dai", "a1sys_hp_sel", 16),
 128        GATE_AUDIO2(CLK_AUDIO_MOD, "audio_mod", "a1sys_hp_sel", 17),
 129        /* AUDIO3 */
 130        GATE_AUDIO3(CLK_AUDIO_ASRCI3, "audio_asrci3", "asm_h_sel", 2),
 131        GATE_AUDIO3(CLK_AUDIO_ASRCI4, "audio_asrci4", "asm_h_sel", 3),
 132        GATE_AUDIO3(CLK_AUDIO_ASRCO3, "audio_asrco3", "asm_h_sel", 6),
 133        GATE_AUDIO3(CLK_AUDIO_ASRCO4, "audio_asrco4", "asm_h_sel", 7),
 134        GATE_AUDIO3(CLK_AUDIO_MEM_ASRC1, "audio_mem_asrc1", "asm_h_sel", 10),
 135        GATE_AUDIO3(CLK_AUDIO_MEM_ASRC2, "audio_mem_asrc2", "asm_h_sel", 11),
 136        GATE_AUDIO3(CLK_AUDIO_MEM_ASRC3, "audio_mem_asrc3", "asm_h_sel", 12),
 137        GATE_AUDIO3(CLK_AUDIO_MEM_ASRC4, "audio_mem_asrc4", "asm_h_sel", 13),
 138        GATE_AUDIO3(CLK_AUDIO_MEM_ASRC5, "audio_mem_asrc5", "asm_h_sel", 14),
 139};
 140
 141static int clk_mt7622_audiosys_init(struct platform_device *pdev)
 142{
 143        struct clk_onecell_data *clk_data;
 144        struct device_node *node = pdev->dev.of_node;
 145        int r;
 146
 147        clk_data = mtk_alloc_clk_data(CLK_AUDIO_NR_CLK);
 148
 149        mtk_clk_register_gates(node, audio_clks, ARRAY_SIZE(audio_clks),
 150                               clk_data);
 151
 152        r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
 153        if (r) {
 154                dev_err(&pdev->dev,
 155                        "could not register clock provider: %s: %d\n",
 156                        pdev->name, r);
 157
 158                goto err_clk_provider;
 159        }
 160
 161        r = devm_of_platform_populate(&pdev->dev);
 162        if (r)
 163                goto err_plat_populate;
 164
 165        return 0;
 166
 167err_plat_populate:
 168        of_clk_del_provider(node);
 169err_clk_provider:
 170        return r;
 171}
 172
 173static const struct of_device_id of_match_clk_mt7622_aud[] = {
 174        {
 175                .compatible = "mediatek,mt7622-audsys",
 176                .data = clk_mt7622_audiosys_init,
 177        }, {
 178                /* sentinel */
 179        }
 180};
 181
 182static int clk_mt7622_aud_probe(struct platform_device *pdev)
 183{
 184        int (*clk_init)(struct platform_device *);
 185        int r;
 186
 187        clk_init = of_device_get_match_data(&pdev->dev);
 188        if (!clk_init)
 189                return -EINVAL;
 190
 191        r = clk_init(pdev);
 192        if (r)
 193                dev_err(&pdev->dev,
 194                        "could not register clock provider: %s: %d\n",
 195                        pdev->name, r);
 196
 197        return r;
 198}
 199
 200static struct platform_driver clk_mt7622_aud_drv = {
 201        .probe = clk_mt7622_aud_probe,
 202        .driver = {
 203                .name = "clk-mt7622-aud",
 204                .of_match_table = of_match_clk_mt7622_aud,
 205        },
 206};
 207
 208builtin_platform_driver(clk_mt7622_aud_drv);
 209