// 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 struct clk_parent_data aux_parents[] = { { .fw_name = "pll8_vote", .name = "pll8_vote" }, { .fw_name = "pxo", .name = "pxo_board" }, }; static const u32 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) { struct device *dev = &pdev->dev; const struct of_device_id *id; void __iomem *base; struct clk_hw *hw; const char *name; id = of_match_device(kpss_xcc_match_table, dev); if (!id) return -ENODEV; base = devm_platform_ioremap_resource(pdev, 0); if (IS_ERR(base)) return PTR_ERR(base); if (id->data) { if (of_property_read_string_index(dev->of_node, "clock-output-names", 0, &name)) return -ENODEV; base += 0x14; } else { name = "acpu_l2_aux"; base += 0x28; } hw = devm_clk_hw_register_mux_parent_data_table(dev, name, aux_parents, ARRAY_SIZE(aux_parents), 0, base, 0, 0x3, 0, aux_parent_map, NULL); if (IS_ERR(hw)) return PTR_ERR(hw); of_clk_add_hw_provider(dev->of_node, of_clk_hw_simple_get, hw); return 0; } static struct platform_driver kpss_xcc_driver = { .probe = kpss_xcc_driver_probe, .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");