drivers/clk/qcom/turingcc-qcs404.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 /*
   3  * Copyright (c) 2019, Linaro Ltd.
   4  */
   5
   6 #include <linux/bitops.h>
   7 #include <linux/err.h>
   8 #include <linux/platform_device.h>
   9 #include <linux/module.h>
  10 #include <linux/of_address.h>
  11 #include <linux/pm_clock.h>
  12 #include <linux/pm_runtime.h>
  13 #include <linux/regmap.h>
  14
  15 #include <dt-bindings/clock/qcom,turingcc-qcs404.h>
  16
  17 #include "clk-regmap.h"
  18 #include "clk-branch.h"
  19 #include "common.h"
  20 #include "reset.h"
  21
  22 static struct clk_branch turing_wrapper_aon_cbcr = {
  23         .halt_reg = 0x5098,
  24         .halt_check = BRANCH_HALT,
  25         .clkr = {
  26                 .enable_reg = 0x5098,
  27                 .enable_mask = BIT(0),
  28                 .hw.init = &(struct clk_init_data) {
  29                         .name = "turing_wrapper_aon_clk",
  30                         .ops = &clk_branch2_aon_ops,
  31                 },
  32         },
  33 };
  34
  35 static struct clk_branch turing_q6ss_ahbm_aon_cbcr = {
  36         .halt_reg = 0x9000,
  37         .halt_check = BRANCH_HALT,
  38         .clkr = {
  39                 .enable_reg = 0x9000,
  40                 .enable_mask = BIT(0),
  41                 .hw.init = &(struct clk_init_data) {
  42                         .name = "turing_q6ss_ahbm_aon_cbcr",
  43                         .ops = &clk_branch2_ops,
  44                 },
  45         },
  46 };
  47
  48 static struct clk_branch turing_q6ss_q6_axim_clk = {
  49         .halt_reg = 0xb000,
  50         .halt_check = BRANCH_HALT,
  51         .clkr = {
  52                 .enable_reg = 0xb000,
  53                 .enable_mask = BIT(0),
  54                 .hw.init = &(struct clk_init_data) {
  55                         .name = "turing_q6ss_q6_axim_clk",
  56                         .ops = &clk_branch2_aon_ops,
  57                 },
  58         },
  59 };
  60
  61 static struct clk_branch turing_q6ss_ahbs_aon_cbcr = {
  62         .halt_reg = 0x10000,
  63         .halt_check = BRANCH_HALT,
  64         .clkr = {
  65                 .enable_reg = 0x10000,
  66                 .enable_mask = BIT(0),
  67                 .hw.init = &(struct clk_init_data) {
  68                         .name = "turing_q6ss_ahbs_aon_clk",
  69                         .ops = &clk_branch2_aon_ops,
  70                 },
  71         },
  72 };
  73
  74 static struct clk_branch turing_wrapper_qos_ahbs_aon_cbcr = {
  75         .halt_reg = 0x11014,
  76         .halt_check = BRANCH_HALT,
  77         .clkr = {
  78                 .enable_reg = 0x11014,
  79                 .enable_mask = BIT(0),
  80                 .hw.init = &(struct clk_init_data) {
  81                         .name = "turing_wrapper_qos_ahbs_aon_clk",
  82                         .ops = &clk_branch2_aon_ops,
  83                 },
  84         },
  85 };
  86
  87 static struct clk_regmap *turingcc_clocks[] = {
  88         [TURING_WRAPPER_AON_CLK] = &turing_wrapper_aon_cbcr.clkr,
  89         [TURING_Q6SS_AHBM_AON_CLK] = &turing_q6ss_ahbm_aon_cbcr.clkr,
  90         [TURING_Q6SS_Q6_AXIM_CLK] = &turing_q6ss_q6_axim_clk.clkr,
  91         [TURING_Q6SS_AHBS_AON_CLK] = &turing_q6ss_ahbs_aon_cbcr.clkr,
  92         [TURING_WRAPPER_QOS_AHBS_AON_CLK] = &turing_wrapper_qos_ahbs_aon_cbcr.clkr,
  93 };
  94
  95 static const struct regmap_config turingcc_regmap_config = {
  96         .reg_bits       = 32,
  97         .reg_stride     = 4,
  98         .val_bits       = 32,
  99         .max_register   = 0x30000,
 100         .fast_io        = true,
 101 };
 102
 103 static const struct qcom_cc_desc turingcc_desc = {
 104         .config = &turingcc_regmap_config,
 105         .clks = turingcc_clocks,
 106         .num_clks = ARRAY_SIZE(turingcc_clocks),
 107 };
 108
 109 static int turingcc_probe(struct platform_device *pdev)
 110 {
 111         int ret;
 112
 113         pm_runtime_enable(&pdev->dev);
 114         ret = pm_clk_create(&pdev->dev);
 115         if (ret)
 116                 goto disable_pm_runtime;
 117
 118         ret = pm_clk_add(&pdev->dev, NULL);
 119         if (ret < 0) {
 120                 dev_err(&pdev->dev, "failed to acquire iface clock\n");
 121                 goto destroy_pm_clk;
 122         }
 123
 124         ret = qcom_cc_probe(pdev, &turingcc_desc);
 125         if (ret < 0)
 126                 goto destroy_pm_clk;
 127
 128         return 0;
 129
 130 destroy_pm_clk:
 131         pm_clk_destroy(&pdev->dev);
 132
 133 disable_pm_runtime:
 134         pm_runtime_disable(&pdev->dev);
 135
 136         return ret;
 137 }
 138
 139 static int turingcc_remove(struct platform_device *pdev)
 140 {
 141         pm_clk_destroy(&pdev->dev);
 142         pm_runtime_disable(&pdev->dev);
 143
 144         return 0;
 145 }
 146
 147 static const struct dev_pm_ops turingcc_pm_ops = {
 148         SET_RUNTIME_PM_OPS(pm_clk_suspend, pm_clk_resume, NULL)
 149 };
 150
 151 static const struct of_device_id turingcc_match_table[] = {
 152         { .compatible = "qcom,qcs404-turingcc" },
 153         { }
 154 };
 155 MODULE_DEVICE_TABLE(of, turingcc_match_table);
 156
 157 static struct platform_driver turingcc_driver = {
 158         .probe          = turingcc_probe,
 159         .remove         = turingcc_remove,
 160         .driver         = {
 161                 .name   = "qcs404-turingcc",
 162                 .of_match_table = turingcc_match_table,
 163                 .pm = &turingcc_pm_ops,
 164         },
 165 };
 166
 167 module_platform_driver(turingcc_driver);
 168
 169 MODULE_DESCRIPTION("Qualcomm QCS404 Turing Clock Controller");
 170 MODULE_LICENSE("GPL v2");