^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 1) // SPDX-License-Identifier: GPL-2.0-or-later
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 2) /*
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 3) * Copyright (C) 2018 John Crispin <john@phrozen.org>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 4) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 5) * Based on code from
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 6) * Allwinner Technology Co., Ltd. <www.allwinnertech.com>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 7) *
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 8) */
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 9)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) #include <linux/delay.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) #include <linux/err.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) #include <linux/io.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) #include <linux/kernel.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) #include <linux/module.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) #include <linux/mutex.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) #include <linux/of_platform.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) #include <linux/of_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) #include <linux/phy/phy.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19) #include <linux/platform_device.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) #include <linux/reset.h>
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22) struct ipq4019_usb_phy {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) struct device *dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) struct phy *phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25) void __iomem *base;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) struct reset_control *por_rst;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) struct reset_control *srif_rst;
^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) static int ipq4019_ss_phy_power_off(struct phy *_phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) reset_control_assert(phy->por_rst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) msleep(10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) static int ipq4019_ss_phy_power_on(struct phy *_phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 42) struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 43)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 44) ipq4019_ss_phy_power_off(_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 45)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 46) reset_control_deassert(phy->por_rst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 47)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 48) return 0;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 49) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 50)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 51) static const struct phy_ops ipq4019_usb_ss_phy_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 52) .power_on = ipq4019_ss_phy_power_on,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 53) .power_off = ipq4019_ss_phy_power_off,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 54) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 55)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 56) static int ipq4019_hs_phy_power_off(struct phy *_phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 57) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 58) struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 59)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 60) reset_control_assert(phy->por_rst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 61) msleep(10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 62)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 63) reset_control_assert(phy->srif_rst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 64) msleep(10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 65)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 66) return 0;
^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 ipq4019_hs_phy_power_on(struct phy *_phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 70) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 71) struct ipq4019_usb_phy *phy = phy_get_drvdata(_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 72)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 73) ipq4019_hs_phy_power_off(_phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 74)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 75) reset_control_deassert(phy->srif_rst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 76) msleep(10);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 77)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 78) reset_control_deassert(phy->por_rst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 79)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 80) return 0;
^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) static const struct phy_ops ipq4019_usb_hs_phy_ops = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 84) .power_on = ipq4019_hs_phy_power_on,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 85) .power_off = ipq4019_hs_phy_power_off,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 86) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 87)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 88) static const struct of_device_id ipq4019_usb_phy_of_match[] = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 89) { .compatible = "qcom,usb-hs-ipq4019-phy", .data = &ipq4019_usb_hs_phy_ops},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 90) { .compatible = "qcom,usb-ss-ipq4019-phy", .data = &ipq4019_usb_ss_phy_ops},
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 91) { },
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 92) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 93) MODULE_DEVICE_TABLE(of, ipq4019_usb_phy_of_match);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 94)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 95) static int ipq4019_usb_phy_probe(struct platform_device *pdev)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 96) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 97) struct device *dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 98) struct resource *res;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 99) struct phy_provider *phy_provider;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 100) struct ipq4019_usb_phy *phy;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 101)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 102) phy = devm_kzalloc(dev, sizeof(*phy), GFP_KERNEL);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 103) if (!phy)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 104) return -ENOMEM;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 105)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 106) phy->dev = &pdev->dev;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 107) res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 108) phy->base = devm_ioremap_resource(&pdev->dev, res);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 109) if (IS_ERR(phy->base)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 110) dev_err(dev, "failed to remap register memory\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 111) return PTR_ERR(phy->base);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 112) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 113)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 114) phy->por_rst = devm_reset_control_get(phy->dev, "por_rst");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 115) if (IS_ERR(phy->por_rst)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 116) if (PTR_ERR(phy->por_rst) != -EPROBE_DEFER)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 117) dev_err(dev, "POR reset is missing\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 118) return PTR_ERR(phy->por_rst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 119) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 120)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 121) phy->srif_rst = devm_reset_control_get_optional(phy->dev, "srif_rst");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 122) if (IS_ERR(phy->srif_rst))
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 123) return PTR_ERR(phy->srif_rst);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 124)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 125) phy->phy = devm_phy_create(dev, NULL, of_device_get_match_data(dev));
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 126) if (IS_ERR(phy->phy)) {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 127) dev_err(dev, "failed to create PHY\n");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 128) return PTR_ERR(phy->phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 129) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 130) phy_set_drvdata(phy->phy, phy);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 131)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 132) phy_provider = devm_of_phy_provider_register(dev, of_phy_simple_xlate);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 133)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 134) return PTR_ERR_OR_ZERO(phy_provider);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 135) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 136)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 137) static struct platform_driver ipq4019_usb_phy_driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 138) .probe = ipq4019_usb_phy_probe,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 139) .driver = {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 140) .of_match_table = ipq4019_usb_phy_of_match,
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 141) .name = "ipq4019-usb-phy",
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 142) }
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 143) };
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 144) module_platform_driver(ipq4019_usb_phy_driver);
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 145)
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 146) MODULE_DESCRIPTION("QCOM/IPQ4019 USB phy driver");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 147) MODULE_AUTHOR("John Crispin <john@phrozen.org>");
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 148) MODULE_LICENSE("GPL v2");
Orange Pi5 kernel
Deprecated Linux kernel 5.10.110 for OrangePi 5/5B/5+ boards
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