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

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2018 MediaTek Inc.
   4  * Author: Owen Chen <owen.chen@mediatek.com>
   5  */
   6
   7 #include <linux/clk-provider.h>
   8 #include <linux/platform_device.h>
   9
  10 #include "clk-mtk.h"
  11 #include "clk-gate.h"
  12
  13 #include <dt-bindings/clock/mt6765-clk.h>
  14
  15 static const struct mtk_gate_regs audio0_cg_regs = {
  16         .set_ofs = 0x0,
  17         .clr_ofs = 0x0,
  18         .sta_ofs = 0x0,
  19 };
  20
  21 static const struct mtk_gate_regs audio1_cg_regs = {
  22         .set_ofs = 0x4,
  23         .clr_ofs = 0x4,
  24         .sta_ofs = 0x4,
  25 };
  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 static const struct mtk_gate audio_clks[] = {
  46         /* AUDIO0 */
  47         GATE_AUDIO0(CLK_AUDIO_AFE, "aud_afe", "audio_ck", 2),
  48         GATE_AUDIO0(CLK_AUDIO_22M, "aud_22m", "aud_engen1_ck", 8),
  49         GATE_AUDIO0(CLK_AUDIO_APLL_TUNER, "aud_apll_tuner",
  50                     "aud_engen1_ck", 19),
  51         GATE_AUDIO0(CLK_AUDIO_ADC, "aud_adc", "audio_ck", 24),
  52         GATE_AUDIO0(CLK_AUDIO_DAC, "aud_dac", "audio_ck", 25),
  53         GATE_AUDIO0(CLK_AUDIO_DAC_PREDIS, "aud_dac_predis",
  54                     "audio_ck", 26),
  55         GATE_AUDIO0(CLK_AUDIO_TML, "aud_tml", "audio_ck", 27),
  56         /* AUDIO1 */
  57         GATE_AUDIO1(CLK_AUDIO_I2S1_BCLK, "aud_i2s1_bclk",
  58                     "audio_ck", 4),
  59         GATE_AUDIO1(CLK_AUDIO_I2S2_BCLK, "aud_i2s2_bclk",
  60                     "audio_ck", 5),
  61         GATE_AUDIO1(CLK_AUDIO_I2S3_BCLK, "aud_i2s3_bclk",
  62                     "audio_ck", 6),
  63         GATE_AUDIO1(CLK_AUDIO_I2S4_BCLK, "aud_i2s4_bclk",
  64                     "audio_ck", 7),
  65 };
  66
  67 static int clk_mt6765_audio_probe(struct platform_device *pdev)
  68 {
  69         struct clk_onecell_data *clk_data;
  70         int r;
  71         struct device_node *node = pdev->dev.of_node;
  72
  73         clk_data = mtk_alloc_clk_data(CLK_AUDIO_NR_CLK);
  74
  75         mtk_clk_register_gates(node, audio_clks,
  76                                ARRAY_SIZE(audio_clks), clk_data);
  77
  78         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  79
  80         if (r)
  81                 pr_err("%s(): could not register clock provider: %d\n",
  82                        __func__, r);
  83
  84         return r;
  85 }
  86
  87 static const struct of_device_id of_match_clk_mt6765_audio[] = {
  88         { .compatible = "mediatek,mt6765-audsys", },
  89         {}
  90 };
  91
  92 static struct platform_driver clk_mt6765_audio_drv = {
  93         .probe = clk_mt6765_audio_probe,
  94         .driver = {
  95                 .name = "clk-mt6765-audio",
  96                 .of_match_table = of_match_clk_mt6765_audio,
  97         },
  98 };
  99
 100 builtin_platform_driver(clk_mt6765_audio_drv);