// SPDX-License-Identifier: GPL-2.0 // Copyright (c) 2018, The Linux Foundation. All rights reserved. #include <linux/kernel.h> #include <linux/init.h> #include <linux/module.h> #include <linux/platform_device.h> #include <linux/err.h> #include <linux/io.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/clk.h> #include <linux/clk-provider.h> static const char *aux_parents[] = { "pll8_vote", "pxo", }; static unsigned int aux_parent_map[] = { 3, 0, }; static const struct of_device_id kpss_xcc_match_table[] = { { .compatible = "qcom,kpss-acc-v1", .data = (void *)1UL }, { .compatible = "qcom,kpss-gcc" }, {} }; MODULE_DEVICE_TABLE(of, kpss_xcc_match_table); static int kpss_xcc_driver_probe(struct platform_device *pdev) { const struct of_device_id *id; struct clk *clk; struct resource *res; void __iomem *base; const char *name; id = of_match_device(kpss_xcc_match_table, &pdev->dev); if (!id) return -ENODEV; res = platform_get_resource(pdev, IORESOURCE_MEM, 0); base = devm_ioremap_resource(&pdev->dev, res); if (IS_ERR(base)) return PTR_ERR(base); if (id->data) { if (of_property_read_string_index(pdev->dev.of_node, "clock-output-names", 0, &name)) return -ENODEV; base += 0x14; } else { name = "acpu_l2_aux"; base += 0x28; } clk = clk_register_mux_table(&pdev->dev, name, aux_parents, ARRAY_SIZE(aux_parents), 0, base, 0, 0x3, 0, aux_parent_map, NULL); platform_set_drvdata(pdev, clk); return PTR_ERR_OR_ZERO(clk); } static int kpss_xcc_driver_remove(struct platform_device *pdev) { clk_unregister_mux(platform_get_drvdata(pdev)); return 0; } static struct platform_driver kpss_xcc_driver = { .probe = kpss_xcc_driver_probe, .remove = kpss_xcc_driver_remove, .driver = { .name = "kpss-xcc", .of_match_table = kpss_xcc_match_table, }, }; module_platform_driver(kpss_xcc_driver); MODULE_DESCRIPTION("Krait Processor Sub System (KPSS) Clock Driver"); MODULE_LICENSE("GPL v2"); MODULE_ALIAS("platform:kpss-xcc");