Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) // SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) // Copyright (c) 2018, The Linux Foundation. All rights reserved.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) #include <linux/init.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/of.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/clk.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/clk-provider.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) static const char *aux_parents[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) 	"pll8_vote",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 	"pxo",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) static unsigned int aux_parent_map[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) 	3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) 	0,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) static const struct of_device_id kpss_xcc_match_table[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	{ .compatible = "qcom,kpss-acc-v1", .data = (void *)1UL },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	{ .compatible = "qcom,kpss-gcc" },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28) 	{}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) MODULE_DEVICE_TABLE(of, kpss_xcc_match_table);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) static int kpss_xcc_driver_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 	const struct of_device_id *id;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 	struct clk *clk;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 	struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 	const char *name;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	id = of_match_device(kpss_xcc_match_table, &pdev->dev);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	if (!id)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) 		return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) 	res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45) 	base = devm_ioremap_resource(&pdev->dev, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) 	if (IS_ERR(base))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47) 		return PTR_ERR(base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) 	if (id->data) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50) 		if (of_property_read_string_index(pdev->dev.of_node,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) 						  "clock-output-names",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) 						  0, &name))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) 			return -ENODEV;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) 		base += 0x14;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55) 	} else {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) 		name = "acpu_l2_aux";
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) 		base += 0x28;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) 	}
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) 	clk = clk_register_mux_table(&pdev->dev, name, aux_parents,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) 				     ARRAY_SIZE(aux_parents), 0, base, 0, 0x3,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62) 				     0, aux_parent_map, NULL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) 	platform_set_drvdata(pdev, clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) 	return PTR_ERR_OR_ZERO(clk);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 67) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 68) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 69) static int kpss_xcc_driver_remove(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) 	clk_unregister_mux(platform_get_drvdata(pdev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72) 	return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) static struct platform_driver kpss_xcc_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) 	.probe = kpss_xcc_driver_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77) 	.remove = kpss_xcc_driver_remove,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) 	.driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79) 		.name = "kpss-xcc",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) 		.of_match_table = kpss_xcc_match_table,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 81) 	},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 82) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 83) module_platform_driver(kpss_xcc_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) MODULE_DESCRIPTION("Krait Processor Sub System (KPSS) Clock Driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) MODULE_LICENSE("GPL v2");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87) MODULE_ALIAS("platform:kpss-xcc");