drivers/clk/mediatek/clk-mt8516-aud.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2019 MediaTek Inc.
   4  * Author: James Liao <jamesjj.liao@mediatek.com>
   5  *         Fabien Parent <fparent@baylibre.com>
   6  */
   7
   8 #include <linux/clk-provider.h>
   9 #include <linux/of.h>
  10 #include <linux/of_address.h>
  11 #include <linux/of_device.h>
  12 #include <linux/platform_device.h>
  13
  14 #include "clk-mtk.h"
  15 #include "clk-gate.h"
  16
  17 #include <dt-bindings/clock/mt8516-clk.h>
  18
  19 static const struct mtk_gate_regs aud_cg_regs = {
  20         .set_ofs = 0x0,
  21         .clr_ofs = 0x0,
  22         .sta_ofs = 0x0,
  23 };
  24
  25 #define GATE_AUD(_id, _name, _parent, _shift) { \
  26                 .id = _id,                      \
  27                 .name = _name,                  \
  28                 .parent_name = _parent,         \
  29                 .regs = &aud_cg_regs,           \
  30                 .shift = _shift,                \
  31                 .ops = &mtk_clk_gate_ops_no_setclr,             \
  32         }
  33
  34 static const struct mtk_gate aud_clks[] __initconst = {
  35         GATE_AUD(CLK_AUD_AFE, "aud_afe", "clk26m_ck", 2),
  36         GATE_AUD(CLK_AUD_I2S, "aud_i2s", "i2s_infra_bck", 6),
  37         GATE_AUD(CLK_AUD_22M, "aud_22m", "rg_aud_engen1", 8),
  38         GATE_AUD(CLK_AUD_24M, "aud_24m", "rg_aud_engen2", 9),
  39         GATE_AUD(CLK_AUD_INTDIR, "aud_intdir", "rg_aud_spdif_in", 15),
  40         GATE_AUD(CLK_AUD_APLL2_TUNER, "aud_apll2_tuner", "rg_aud_engen2", 18),
  41         GATE_AUD(CLK_AUD_APLL_TUNER, "aud_apll_tuner", "rg_aud_engen1", 19),
  42         GATE_AUD(CLK_AUD_HDMI, "aud_hdmi", "apll12_div4", 20),
  43         GATE_AUD(CLK_AUD_SPDF, "aud_spdf", "apll12_div6", 21),
  44         GATE_AUD(CLK_AUD_ADC, "aud_adc", "aud_afe", 24),
  45         GATE_AUD(CLK_AUD_DAC, "aud_dac", "aud_afe", 25),
  46         GATE_AUD(CLK_AUD_DAC_PREDIS, "aud_dac_predis", "aud_afe", 26),
  47         GATE_AUD(CLK_AUD_TML, "aud_tml", "aud_afe", 27),
  48 };
  49
  50 static void __init mtk_audsys_init(struct device_node *node)
  51 {
  52         struct clk_onecell_data *clk_data;
  53         int r;
  54
  55         clk_data = mtk_alloc_clk_data(CLK_AUD_NR_CLK);
  56
  57         mtk_clk_register_gates(node, aud_clks, ARRAY_SIZE(aud_clks), clk_data);
  58
  59         r = of_clk_add_provider(node, of_clk_src_onecell_get, clk_data);
  60         if (r)
  61                 pr_err("%s(): could not register clock provider: %d\n",
  62                         __func__, r);
  63
  64 }
  65 CLK_OF_DECLARE(mtk_audsys, "mediatek,mt8516-audsys", mtk_audsys_init);