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, index: 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, index: 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

source code of linux/drivers/clk/qcom/lpasscc-sdm845.c