1 // SPDX-License-Identifier: GPL-2.0
2 /*
3 * Copyright (c) 2020 MediaTek Inc.
4 * Copyright (c) 2020 BayLibre, SAS
5 * Author: James Liao <jamesjj.liao@mediatek.com>
6 * Fabien Parent <fparent@baylibre.com>
7 */
8
9 #include <linux/clk-provider.h>
10 #include <linux/of.h>
11 #include <linux/of_address.h>
12 #include <linux/of_device.h>
13 #include <linux/platform_device.h>
14
15 #include "clk-mtk.h"
16 #include "clk-gate.h"
17
18 #include <dt-bindings/clock/mt8167-clk.h>
19
20 static const struct mtk_gate_regs aud_cg_regs = {
21 .set_ofs = 0x0,
22 .clr_ofs = 0x0,
23 .sta_ofs = 0x0,
24 };
25
26 #define GATE_AUD(_id, _name, _parent, _shift) { \
27 .id = _id, \
28 .name = _name, \
29 .parent_name = _parent, \
30 .regs = &aud_cg_regs, \
31 .shift = _shift, \
32 .ops = &mtk_clk_gate_ops_no_setclr, \
33 }
34
35 static const struct mtk_gate aud_clks[] __initconst = {
36 GATE_AUD(CLK_AUD_AFE, "aud_afe", "clk26m_ck", 2),
37 GATE_AUD(CLK_AUD_I2S, "aud_i2s", "i2s_infra_bck", 6),
38 GATE_AUD(CLK_AUD_22M, "aud_22m", "rg_aud_engen1", 8),
39 GATE_AUD(CLK_AUD_24M, "aud_24m", "rg_aud_engen2", 9),
40 GATE_AUD(CLK_AUD_INTDIR, "aud_intdir", "rg_aud_spdif_in", 15),
41 GATE_AUD(CLK_AUD_APLL2_TUNER, "aud_apll2_tuner", "rg_aud_engen2", 18),
42 GATE_AUD(CLK_AUD_APLL_TUNER, "aud_apll_tuner", "rg_aud_engen1", 19),
43 GATE_AUD(CLK_AUD_HDMI, "aud_hdmi", "apll12_div4", 20),
44 GATE_AUD(CLK_AUD_SPDF, "aud_spdf", "apll12_div6", 21),
45 GATE_AUD(CLK_AUD_ADC, "aud_adc", "aud_afe", 24),
46 GATE_AUD(CLK_AUD_DAC, "aud_dac", "aud_afe", 25),
47 GATE_AUD(CLK_AUD_DAC_PREDIS, "aud_dac_predis", "aud_afe", 26),
48 GATE_AUD(CLK_AUD_TML, "aud_tml", "aud_afe", 27),
49 };
50
mtk_audsys_init(struct device_node * node)51 static void __init mtk_audsys_init(struct device_node *node)
52 {
53 struct clk_hw_onecell_data *clk_data;
54 int r;
55
56 clk_data = mtk_alloc_clk_data(CLK_AUD_NR_CLK);
57
58 mtk_clk_register_gates(node, aud_clks, ARRAY_SIZE(aud_clks), clk_data);
59
60 r = of_clk_add_hw_provider(node, of_clk_hw_onecell_get, clk_data);
61 if (r)
62 pr_err("%s(): could not register clock provider: %d\n",
63 __func__, r);
64
65 }
66 CLK_OF_DECLARE(mtk_audsys, "mediatek,mt8167-audsys", mtk_audsys_init);
67