1// SPDX-License-Identifier: GPL-2.0
2/*
3 * Copyright (c) 2018, The Linux Foundation. All rights reserved.
4 */
5
6#include <linux/clk-provider.h>
7#include <linux/platform_device.h>
8#include <linux/module.h>
9#include <linux/of_address.h>
10#include <linux/regmap.h>
11
12#include <dt-bindings/clock/qcom,lpass-sdm845.h>
13
14#include "clk-regmap.h"
15#include "clk-branch.h"
16#include "common.h"
17
18static struct clk_branch lpass_q6ss_ahbm_aon_clk = {
19	.halt_reg = 0x12000,
20	.halt_check = BRANCH_VOTED,
21	.clkr = {
22		.enable_reg = 0x12000,
23		.enable_mask = BIT(0),
24		.hw.init = &(struct clk_init_data){
25			.name = "lpass_q6ss_ahbm_aon_clk",
26			.ops = &clk_branch2_ops,
27		},
28	},
29};
30
31static struct clk_branch lpass_q6ss_ahbs_aon_clk = {
32	.halt_reg = 0x1f000,
33	.halt_check = BRANCH_VOTED,
34	.clkr = {
35		.enable_reg = 0x1f000,
36		.enable_mask = BIT(0),
37		.hw.init = &(struct clk_init_data){
38			.name = "lpass_q6ss_ahbs_aon_clk",
39			.ops = &clk_branch2_ops,
40		},
41	},
42};
43
44static struct clk_branch lpass_qdsp6ss_core_clk = {
45	.halt_reg = 0x20,
46	/* CLK_OFF would not toggle until LPASS is out of reset */
47	.halt_check = BRANCH_HALT_SKIP,
48	.clkr = {
49		.enable_reg = 0x20,
50		.enable_mask = BIT(0),
51		.hw.init = &(struct clk_init_data){
52			.name = "lpass_qdsp6ss_core_clk",
53			.ops = &clk_branch2_ops,
54		},
55	},
56};
57
58static struct clk_branch lpass_qdsp6ss_xo_clk = {
59	.halt_reg = 0x38,
60	/* CLK_OFF would not toggle until LPASS is out of reset */
61	.halt_check = BRANCH_HALT_SKIP,
62	.clkr = {
63		.enable_reg = 0x38,
64		.enable_mask = BIT(0),
65		.hw.init = &(struct clk_init_data){
66			.name = "lpass_qdsp6ss_xo_clk",
67			.ops = &clk_branch2_ops,
68		},
69	},
70};
71
72static struct clk_branch lpass_qdsp6ss_sleep_clk = {
73	.halt_reg = 0x3c,
74	/* CLK_OFF would not toggle until LPASS is out of reset */
75	.halt_check = BRANCH_HALT_SKIP,
76	.clkr = {
77		.enable_reg = 0x3c,
78		.enable_mask = BIT(0),
79		.hw.init = &(struct clk_init_data){
80			.name = "lpass_qdsp6ss_sleep_clk",
81			.ops = &clk_branch2_ops,
82		},
83	},
84};
85
86static struct regmap_config lpass_regmap_config = {
87	.reg_bits	= 32,
88	.reg_stride	= 4,
89	.val_bits	= 32,
90	.fast_io	= true,
91};
92
93static struct clk_regmap *lpass_cc_sdm845_clocks[] = {
94	[LPASS_Q6SS_AHBM_AON_CLK] = &lpass_q6ss_ahbm_aon_clk.clkr,
95	[LPASS_Q6SS_AHBS_AON_CLK] = &lpass_q6ss_ahbs_aon_clk.clkr,
96};
97
98static const struct qcom_cc_desc lpass_cc_sdm845_desc = {
99	.config = &lpass_regmap_config,
100	.clks = lpass_cc_sdm845_clocks,
101	.num_clks = ARRAY_SIZE(lpass_cc_sdm845_clocks),
102};
103
104static struct clk_regmap *lpass_qdsp6ss_sdm845_clocks[] = {
105	[LPASS_QDSP6SS_XO_CLK] = &lpass_qdsp6ss_xo_clk.clkr,
106	[LPASS_QDSP6SS_SLEEP_CLK] = &lpass_qdsp6ss_sleep_clk.clkr,
107	[LPASS_QDSP6SS_CORE_CLK] = &lpass_qdsp6ss_core_clk.clkr,
108};
109
110static const struct qcom_cc_desc lpass_qdsp6ss_sdm845_desc = {
111	.config = &lpass_regmap_config,
112	.clks = lpass_qdsp6ss_sdm845_clocks,
113	.num_clks = ARRAY_SIZE(lpass_qdsp6ss_sdm845_clocks),
114};
115
116static int lpass_cc_sdm845_probe(struct platform_device *pdev)
117{
118	const struct qcom_cc_desc *desc;
119	int ret;
120
121	lpass_regmap_config.name = "cc";
122	desc = &lpass_cc_sdm845_desc;
123
124	ret = qcom_cc_probe_by_index(pdev, 0, desc);
125	if (ret)
126		return ret;
127
128	lpass_regmap_config.name = "qdsp6ss";
129	desc = &lpass_qdsp6ss_sdm845_desc;
130
131	return qcom_cc_probe_by_index(pdev, 1, desc);
132}
133
134static const struct of_device_id lpass_cc_sdm845_match_table[] = {
135	{ .compatible = "qcom,sdm845-lpasscc" },
136	{ }
137};
138MODULE_DEVICE_TABLE(of, lpass_cc_sdm845_match_table);
139
140static struct platform_driver lpass_cc_sdm845_driver = {
141	.probe		= lpass_cc_sdm845_probe,
142	.driver		= {
143		.name	= "sdm845-lpasscc",
144		.of_match_table = lpass_cc_sdm845_match_table,
145	},
146};
147
148static int __init lpass_cc_sdm845_init(void)
149{
150	return platform_driver_register(&lpass_cc_sdm845_driver);
151}
152subsys_initcall(lpass_cc_sdm845_init);
153
154static void __exit lpass_cc_sdm845_exit(void)
155{
156	platform_driver_unregister(&lpass_cc_sdm845_driver);
157}
158module_exit(lpass_cc_sdm845_exit);
159
160MODULE_DESCRIPTION("QTI LPASS_CC SDM845 Driver");
161MODULE_LICENSE("GPL v2");
162