1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (c) 2021, The Linux Foundation. All rights reserved.
4 * Copyright (c) 2022, Qualcomm Innovation Center, Inc. All rights reserved.
5 * Copyright (c) 2022, Linaro Limited
6 */
7
8 #include <linux/clk-provider.h>
9 #include <linux/module.h>
10 #include <linux/of.h>
11 #include <linux/platform_device.h>
12 #include <linux/regmap.h>
13
14 #include <dt-bindings/clock/qcom,sm8550-tcsr.h>
15
16 #include "clk-alpha-pll.h"
17 #include "clk-branch.h"
18 #include "clk-pll.h"
19 #include "clk-rcg.h"
20 #include "clk-regmap.h"
21 #include "clk-regmap-divider.h"
22 #include "clk-regmap-mux.h"
23 #include "common.h"
24 #include "reset.h"
25
26 enum {
27 DT_BI_TCXO_PAD,
28 };
29
30 static struct clk_branch tcsr_pcie_0_clkref_en = {
31 .halt_reg = 0x15100,
32 .halt_check = BRANCH_HALT_SKIP,
33 .clkr = {
34 .enable_reg = 0x15100,
35 .enable_mask = BIT(0),
36 .hw.init = &(struct clk_init_data){
37 .name = "tcsr_pcie_0_clkref_en",
38 .parent_data = &(const struct clk_parent_data){
39 .index = DT_BI_TCXO_PAD,
40 },
41 .num_parents = 1,
42 .ops = &clk_branch2_ops,
43 },
44 },
45 };
46
47 static struct clk_branch tcsr_pcie_1_clkref_en = {
48 .halt_reg = 0x15114,
49 .halt_check = BRANCH_HALT_SKIP,
50 .clkr = {
51 .enable_reg = 0x15114,
52 .enable_mask = BIT(0),
53 .hw.init = &(struct clk_init_data){
54 .name = "tcsr_pcie_1_clkref_en",
55 .parent_data = &(const struct clk_parent_data){
56 .index = DT_BI_TCXO_PAD,
57 },
58 .num_parents = 1,
59 .ops = &clk_branch2_ops,
60 },
61 },
62 };
63
64 static struct clk_branch tcsr_ufs_clkref_en = {
65 .halt_reg = 0x15110,
66 .halt_check = BRANCH_HALT_SKIP,
67 .clkr = {
68 .enable_reg = 0x15110,
69 .enable_mask = BIT(0),
70 .hw.init = &(struct clk_init_data){
71 .name = "tcsr_ufs_clkref_en",
72 .parent_data = &(const struct clk_parent_data){
73 .index = DT_BI_TCXO_PAD,
74 },
75 .num_parents = 1,
76 .ops = &clk_branch2_ops,
77 },
78 },
79 };
80
81 static struct clk_branch tcsr_ufs_pad_clkref_en = {
82 .halt_reg = 0x15104,
83 .halt_check = BRANCH_HALT_SKIP,
84 .clkr = {
85 .enable_reg = 0x15104,
86 .enable_mask = BIT(0),
87 .hw.init = &(struct clk_init_data){
88 .name = "tcsr_ufs_pad_clkref_en",
89 .parent_data = &(const struct clk_parent_data){
90 .index = DT_BI_TCXO_PAD,
91 },
92 .num_parents = 1,
93 .ops = &clk_branch2_ops,
94 },
95 },
96 };
97
98 static struct clk_branch tcsr_usb2_clkref_en = {
99 .halt_reg = 0x15118,
100 .halt_check = BRANCH_HALT_SKIP,
101 .clkr = {
102 .enable_reg = 0x15118,
103 .enable_mask = BIT(0),
104 .hw.init = &(struct clk_init_data){
105 .name = "tcsr_usb2_clkref_en",
106 .parent_data = &(const struct clk_parent_data){
107 .index = DT_BI_TCXO_PAD,
108 },
109 .num_parents = 1,
110 .ops = &clk_branch2_ops,
111 },
112 },
113 };
114
115 static struct clk_branch tcsr_usb3_clkref_en = {
116 .halt_reg = 0x15108,
117 .halt_check = BRANCH_HALT_SKIP,
118 .clkr = {
119 .enable_reg = 0x15108,
120 .enable_mask = BIT(0),
121 .hw.init = &(struct clk_init_data){
122 .name = "tcsr_usb3_clkref_en",
123 .parent_data = &(const struct clk_parent_data){
124 .index = DT_BI_TCXO_PAD,
125 },
126 .num_parents = 1,
127 .ops = &clk_branch2_ops,
128 },
129 },
130 };
131
132 static struct clk_regmap *tcsr_cc_sm8550_clocks[] = {
133 [TCSR_PCIE_0_CLKREF_EN] = &tcsr_pcie_0_clkref_en.clkr,
134 [TCSR_PCIE_1_CLKREF_EN] = &tcsr_pcie_1_clkref_en.clkr,
135 [TCSR_UFS_CLKREF_EN] = &tcsr_ufs_clkref_en.clkr,
136 [TCSR_UFS_PAD_CLKREF_EN] = &tcsr_ufs_pad_clkref_en.clkr,
137 [TCSR_USB2_CLKREF_EN] = &tcsr_usb2_clkref_en.clkr,
138 [TCSR_USB3_CLKREF_EN] = &tcsr_usb3_clkref_en.clkr,
139 };
140
141 static const struct regmap_config tcsr_cc_sm8550_regmap_config = {
142 .reg_bits = 32,
143 .reg_stride = 4,
144 .val_bits = 32,
145 .max_register = 0x2f000,
146 .fast_io = true,
147 };
148
149 static const struct qcom_cc_desc tcsr_cc_sm8550_desc = {
150 .config = &tcsr_cc_sm8550_regmap_config,
151 .clks = tcsr_cc_sm8550_clocks,
152 .num_clks = ARRAY_SIZE(tcsr_cc_sm8550_clocks),
153 };
154
155 static const struct of_device_id tcsr_cc_sm8550_match_table[] = {
156 { .compatible = "qcom,sm8550-tcsr" },
157 { }
158 };
159 MODULE_DEVICE_TABLE(of, tcsr_cc_sm8550_match_table);
160
tcsr_cc_sm8550_probe(struct platform_device * pdev)161 static int tcsr_cc_sm8550_probe(struct platform_device *pdev)
162 {
163 struct regmap *regmap;
164
165 regmap = qcom_cc_map(pdev, &tcsr_cc_sm8550_desc);
166 if (IS_ERR(regmap))
167 return PTR_ERR(regmap);
168
169 return qcom_cc_really_probe(pdev, &tcsr_cc_sm8550_desc, regmap);
170 }
171
172 static struct platform_driver tcsr_cc_sm8550_driver = {
173 .probe = tcsr_cc_sm8550_probe,
174 .driver = {
175 .name = "tcsr_cc-sm8550",
176 .of_match_table = tcsr_cc_sm8550_match_table,
177 },
178 };
179
tcsr_cc_sm8550_init(void)180 static int __init tcsr_cc_sm8550_init(void)
181 {
182 return platform_driver_register(&tcsr_cc_sm8550_driver);
183 }
184 subsys_initcall(tcsr_cc_sm8550_init);
185
tcsr_cc_sm8550_exit(void)186 static void __exit tcsr_cc_sm8550_exit(void)
187 {
188 platform_driver_unregister(&tcsr_cc_sm8550_driver);
189 }
190 module_exit(tcsr_cc_sm8550_exit);
191
192 MODULE_DESCRIPTION("QTI TCSRCC SM8550 Driver");
193 MODULE_LICENSE("GPL");
194