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
mtk_audsys_init(struct device_node * node)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);
66