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1// SPDX-License-Identifier: GPL-2.02// Copyright (c) 2018, The Linux Foundation. All rights reserved.3 4#include <linux/kernel.h>5#include <linux/init.h>6#include <linux/module.h>7#include <linux/platform_device.h>8#include <linux/property.h>9#include <linux/err.h>10#include <linux/io.h>11#include <linux/of.h>12#include <linux/clk.h>13#include <linux/clk-provider.h>14 15static const struct clk_parent_data aux_parents[] = {16 { .fw_name = "pll8_vote", .name = "pll8_vote" },17 { .fw_name = "pxo", .name = "pxo_board" },18};19 20static const u32 aux_parent_map[] = {21 3,22 0,23};24 25static const struct of_device_id kpss_xcc_match_table[] = {26 { .compatible = "qcom,kpss-acc-v1", .data = (void *)1UL },27 { .compatible = "qcom,kpss-gcc" },28 {}29};30MODULE_DEVICE_TABLE(of, kpss_xcc_match_table);31 32static int kpss_xcc_driver_probe(struct platform_device *pdev)33{34 struct device *dev = &pdev->dev;35 void __iomem *base;36 struct clk_hw *hw;37 const char *name;38 39 base = devm_platform_ioremap_resource(pdev, 0);40 if (IS_ERR(base))41 return PTR_ERR(base);42 43 if (device_get_match_data(&pdev->dev)) {44 if (of_property_read_string_index(dev->of_node,45 "clock-output-names",46 0, &name))47 return -ENODEV;48 base += 0x14;49 } else {50 name = "acpu_l2_aux";51 base += 0x28;52 }53 54 hw = devm_clk_hw_register_mux_parent_data_table(dev, name, aux_parents,55 ARRAY_SIZE(aux_parents), 0,56 base, 0, 0x3,57 0, aux_parent_map, NULL);58 if (IS_ERR(hw))59 return PTR_ERR(hw);60 61 return of_clk_add_hw_provider(dev->of_node, of_clk_hw_simple_get, hw);62}63 64static struct platform_driver kpss_xcc_driver = {65 .probe = kpss_xcc_driver_probe,66 .driver = {67 .name = "kpss-xcc",68 .of_match_table = kpss_xcc_match_table,69 },70};71module_platform_driver(kpss_xcc_driver);72 73MODULE_DESCRIPTION("Krait Processor Sub System (KPSS) Clock Driver");74MODULE_LICENSE("GPL v2");75MODULE_ALIAS("platform:kpss-xcc");76