tcsrcc-sm8750.c

  1// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
  2/*
  3 * Copyright (c) 2024, Qualcomm Innovation Center, Inc. All rights reserved.
  4 */
  5
  6#include <linux/clk-provider.h>
  7#include <linux/module.h>
  8#include <linux/of.h>
  9#include <linux/platform_device.h>
 10#include <linux/regmap.h>
 11
 12#include <dt-bindings/clock/qcom,sm8750-tcsr.h>
 13
 14#include "clk-branch.h"
 15#include "clk-regmap.h"
 16#include "clk-regmap-divider.h"
 17#include "clk-regmap-mux.h"
 18#include "common.h"
 19
 20enum {
 21	DT_BI_TCXO_PAD,
 22};
 23
 24static struct clk_branch tcsr_pcie_0_clkref_en = {
 25	.halt_reg = 0x0,
 26	.halt_check = BRANCH_HALT_DELAY,
 27	.clkr = {
 28		.enable_reg = 0x0,
 29		.enable_mask = BIT(0),
 30		.hw.init = &(const struct clk_init_data) {
 31			.name = "tcsr_pcie_0_clkref_en",
 32			.ops = &clk_branch2_ops,
 33		},
 34	},
 35};
 36
 37static struct clk_branch tcsr_ufs_clkref_en = {
 38	.halt_reg = 0x1000,
 39	.halt_check = BRANCH_HALT_DELAY,
 40	.clkr = {
 41		.enable_reg = 0x1000,
 42		.enable_mask = BIT(0),
 43		.hw.init = &(const struct clk_init_data) {
 44			.name = "tcsr_ufs_clkref_en",
 45			.parent_data = &(const struct clk_parent_data){
 46				.index = DT_BI_TCXO_PAD,
 47			},
 48			.num_parents = 1,
 49			.ops = &clk_branch2_ops,
 50		},
 51	},
 52};
 53
 54static struct clk_branch tcsr_usb2_clkref_en = {
 55	.halt_reg = 0x2000,
 56	.halt_check = BRANCH_HALT_DELAY,
 57	.clkr = {
 58		.enable_reg = 0x2000,
 59		.enable_mask = BIT(0),
 60		.hw.init = &(const struct clk_init_data) {
 61			.name = "tcsr_usb2_clkref_en",
 62			.parent_data = &(const struct clk_parent_data){
 63				.index = DT_BI_TCXO_PAD,
 64			},
 65			.num_parents = 1,
 66			.ops = &clk_branch2_ops,
 67		},
 68	},
 69};
 70
 71static struct clk_branch tcsr_usb3_clkref_en = {
 72	.halt_reg = 0x3000,
 73	.halt_check = BRANCH_HALT_DELAY,
 74	.clkr = {
 75		.enable_reg = 0x3000,
 76		.enable_mask = BIT(0),
 77		.hw.init = &(const struct clk_init_data) {
 78			.name = "tcsr_usb3_clkref_en",
 79			.parent_data = &(const struct clk_parent_data){
 80				.index = DT_BI_TCXO_PAD,
 81			},
 82			.num_parents = 1,
 83			.ops = &clk_branch2_ops,
 84		},
 85	},
 86};
 87
 88static struct clk_regmap *tcsr_cc_sm8750_clocks[] = {
 89	[TCSR_PCIE_0_CLKREF_EN] = &tcsr_pcie_0_clkref_en.clkr,
 90	[TCSR_UFS_CLKREF_EN] = &tcsr_ufs_clkref_en.clkr,
 91	[TCSR_USB2_CLKREF_EN] = &tcsr_usb2_clkref_en.clkr,
 92	[TCSR_USB3_CLKREF_EN] = &tcsr_usb3_clkref_en.clkr,
 93};
 94
 95static const struct regmap_config tcsr_cc_sm8750_regmap_config = {
 96	.reg_bits = 32,
 97	.reg_stride = 4,
 98	.val_bits = 32,
 99	.max_register = 0x3000,
100	.fast_io = true,
101};
102
103static const struct qcom_cc_desc tcsr_cc_sm8750_desc = {
104	.config = &tcsr_cc_sm8750_regmap_config,
105	.clks = tcsr_cc_sm8750_clocks,
106	.num_clks = ARRAY_SIZE(tcsr_cc_sm8750_clocks),
107};
108
109static const struct of_device_id tcsr_cc_sm8750_match_table[] = {
110	{ .compatible = "qcom,sm8750-tcsr" },
111	{ }
112};
113MODULE_DEVICE_TABLE(of, tcsr_cc_sm8750_match_table);
114
115static int tcsr_cc_sm8750_probe(struct platform_device *pdev)
116{
117	return qcom_cc_probe(pdev, &tcsr_cc_sm8750_desc);
118}
119
120static struct platform_driver tcsr_cc_sm8750_driver = {
121	.probe = tcsr_cc_sm8750_probe,
122	.driver = {
123		.name = "tcsr_cc-sm8750",
124		.of_match_table = tcsr_cc_sm8750_match_table,
125	},
126};
127
128static int __init tcsr_cc_sm8750_init(void)
129{
130	return platform_driver_register(&tcsr_cc_sm8750_driver);
131}
132subsys_initcall(tcsr_cc_sm8750_init);
133
134static void __exit tcsr_cc_sm8750_exit(void)
135{
136	platform_driver_unregister(&tcsr_cc_sm8750_driver);
137}
138module_exit(tcsr_cc_sm8750_exit);
139
140MODULE_DESCRIPTION("QTI TCSR_CC SM8750 Driver");
141MODULE_LICENSE("GPL");