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