mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-06 02:46:42 +07:00
c0f486fde3
- Fix a regression in leds-gpio introduced by a recent commit that inadvertently changed the name of one of the properties used by the driver (Fabio Estevam). - Fix a regression in the ACPI backlight driver introduced by a recent fix that missed one special case that had to be taken into account (Aaron Lu). - Drop the level of some new kernel messages from the ACPI core introduced by a recent commit to KERN_DEBUG which they should have used from the start and drop some other unuseful KERN_ERR messages printed by ACPI (Rafael J Wysocki). - Revert an incorrect commit modifying the cpupower tool (Prarit Bhargava). - Fix two regressions introduced by recent commits in the OPP library and clean up some existing minor issues in that code (Viresh Kumar). - Continue to replace CONFIG_PM_RUNTIME with CONFIG_PM throughout the tree (or drop it where that can be done) in order to make it possible to eliminate CONFIG_PM_RUNTIME (Rafael J Wysocki, Ulf Hansson, Ludovic Desroches). There will be one more "CONFIG_PM_RUNTIME removal" batch after this one, because some new uses of it have been introduced during the current merge window, but that should be sufficient to finally get rid of it. - Make the ACPI EC driver more robust against race conditions related to GPE handler installation failures (Lv Zheng). - Prevent the ACPI device PM core code from attempting to disable GPEs that it has not enabled which confuses ACPICA and makes it report errors unnecessarily (Rafael J Wysocki). - Add a "force" command line switch to the intel_pstate driver to make it possible to override the blacklisting of some systems in that driver if needed (Ethan Zhao). - Improve intel_pstate code documentation and add a MAINTAINERS entry for it (Kristen Carlson Accardi). - Make the ACPI fan driver create cooling device interfaces witn names that reflect the IDs of the ACPI device objects they are associated with, except for "generic" ACPI fans (PNP ID "PNP0C0B"). That's necessary for user space thermal management tools to be able to connect the fans with the parts of the system they are supposed to be cooling properly. From Srinivas Pandruvada. / -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.22 (GNU/Linux) iQIcBAABCAAGBQJUk0IDAAoJEILEb/54YlRx7fgP/3+yF/0TnEW93j2ALDAQFiLF tSv2A2vQC8vtMJjjWx0z/HqPh86gfaReEFZmUJD/Q/e2LXEnxNZJ+QMjcekPVkDM mTvcIMc2MR8vOA/oMkgxeaKregrrx7RkCfojd+NWZhVukkjl+mvBHgAnYjXRL+NZ unDWGlbHG97vq/3kGjPYhDS00nxHblw8NHFBu5HL5RxwABdWoeZJITwqxXWyuPLw nlqNWlOxmwvtSbw2VMKz0uof1nFHyQLykYsMG0ZsyayCRdWUZYkEqmE7GGpCLkLu D6yfmlpen6ccIOsEAae0eXBt50IFY9Tihk5lovx1mZmci2SNRg29BqMI105wIn0u 8b8Ej7MNHp7yMxRpB5WfU90p/y7ioJns9guFZxY0CKaRnrI2+BLt3RscMi3MPI06 Cu2/WkSSa09fhDPA+pk+VDYsmWgyVawigesNmMP5/cvYO/yYywVRjOuO1k77qQGp 4dSpFYEHfpxinejZnVZOk2V9MkvSLoSMux6wPV0xM0IE1iD0ulVpHjTJrwp80ph4 +bfUFVr/vrD1y7EKbf1PD363ZKvJhWhvQWDgETsM1vgLf21PfWO7C2kflIAsWsdQ 1ukD5nCBRlP4K73hG7bdM6kRztXhUdR0SHg85/t0KB/ExiVqtcXIzB60D0G1lENd QlKbq3O4lim1WGuhazQY =5fo2 -----END PGP SIGNATURE----- Merge tag 'pm+acpi-3.19-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull more ACPI and power management updates from Rafael Wysocki: "These are regression fixes (leds-gpio, ACPI backlight driver, operating performance points library, ACPI device enumeration messages, cpupower tool), other bug fixes (ACPI EC driver, ACPI device PM), some cleanups in the operating performance points (OPP) framework, continuation of CONFIG_PM_RUNTIME elimination, a couple of minor intel_pstate driver changes, a new MAINTAINERS entry for it and an ACPI fan driver change needed for better support of thermal management in user space. Specifics: - Fix a regression in leds-gpio introduced by a recent commit that inadvertently changed the name of one of the properties used by the driver (Fabio Estevam). - Fix a regression in the ACPI backlight driver introduced by a recent fix that missed one special case that had to be taken into account (Aaron Lu). - Drop the level of some new kernel messages from the ACPI core introduced by a recent commit to KERN_DEBUG which they should have used from the start and drop some other unuseful KERN_ERR messages printed by ACPI (Rafael J Wysocki). - Revert an incorrect commit modifying the cpupower tool (Prarit Bhargava). - Fix two regressions introduced by recent commits in the OPP library and clean up some existing minor issues in that code (Viresh Kumar). - Continue to replace CONFIG_PM_RUNTIME with CONFIG_PM throughout the tree (or drop it where that can be done) in order to make it possible to eliminate CONFIG_PM_RUNTIME (Rafael J Wysocki, Ulf Hansson, Ludovic Desroches). There will be one more "CONFIG_PM_RUNTIME removal" batch after this one, because some new uses of it have been introduced during the current merge window, but that should be sufficient to finally get rid of it. - Make the ACPI EC driver more robust against race conditions related to GPE handler installation failures (Lv Zheng). - Prevent the ACPI device PM core code from attempting to disable GPEs that it has not enabled which confuses ACPICA and makes it report errors unnecessarily (Rafael J Wysocki). - Add a "force" command line switch to the intel_pstate driver to make it possible to override the blacklisting of some systems in that driver if needed (Ethan Zhao). - Improve intel_pstate code documentation and add a MAINTAINERS entry for it (Kristen Carlson Accardi). - Make the ACPI fan driver create cooling device interfaces witn names that reflect the IDs of the ACPI device objects they are associated with, except for "generic" ACPI fans (PNP ID "PNP0C0B"). That's necessary for user space thermal management tools to be able to connect the fans with the parts of the system they are supposed to be cooling properly. From Srinivas Pandruvada" * tag 'pm+acpi-3.19-rc1-2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (32 commits) MAINTAINERS: add entry for intel_pstate ACPI / video: update the skip case for acpi_video_device_in_dod() power / PM: Eliminate CONFIG_PM_RUNTIME NFC / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM SCSI / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM ACPI / EC: Fix unexpected ec_remove_handlers() invocations Revert "tools: cpupower: fix return checks for sysfs_get_idlestate_count()" tracing / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM x86 / PM: Replace CONFIG_PM_RUNTIME in io_apic.c PM: Remove the SET_PM_RUNTIME_PM_OPS() macro mmc: atmel-mci: use SET_RUNTIME_PM_OPS() macro PM / Kconfig: Replace PM_RUNTIME with PM in dependencies ARM / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM sound / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM phy / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM video / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM tty / PM: Replace CONFIG_PM_RUNTIME with CONFIG_PM spi: Replace CONFIG_PM_RUNTIME with CONFIG_PM ACPI / PM: Do not disable wakeup GPEs that have not been enabled ACPI / utils: Drop error messages from acpi_evaluate_reference() ...
390 lines
9.2 KiB
C
390 lines
9.2 KiB
C
/*
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* omap-usb2.c - USB PHY, talking to musb controller in OMAP.
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*
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* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* Author: Kishon Vijay Abraham I <kishon@ti.com>
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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*/
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#include <linux/module.h>
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#include <linux/platform_device.h>
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#include <linux/slab.h>
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#include <linux/of.h>
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#include <linux/io.h>
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#include <linux/phy/omap_usb.h>
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#include <linux/usb/phy_companion.h>
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#include <linux/clk.h>
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#include <linux/err.h>
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#include <linux/pm_runtime.h>
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#include <linux/delay.h>
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#include <linux/phy/omap_control_phy.h>
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#include <linux/phy/phy.h>
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#include <linux/of_platform.h>
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#define USB2PHY_DISCON_BYP_LATCH (1 << 31)
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#define USB2PHY_ANA_CONFIG1 0x4c
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/**
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* omap_usb2_set_comparator - links the comparator present in the sytem with
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* this phy
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* @comparator - the companion phy(comparator) for this phy
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*
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* The phy companion driver should call this API passing the phy_companion
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* filled with set_vbus and start_srp to be used by usb phy.
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*
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* For use by phy companion driver
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*/
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int omap_usb2_set_comparator(struct phy_companion *comparator)
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{
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struct omap_usb *phy;
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struct usb_phy *x = usb_get_phy(USB_PHY_TYPE_USB2);
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if (IS_ERR(x))
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return -ENODEV;
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phy = phy_to_omapusb(x);
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phy->comparator = comparator;
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return 0;
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}
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EXPORT_SYMBOL_GPL(omap_usb2_set_comparator);
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static int omap_usb_set_vbus(struct usb_otg *otg, bool enabled)
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{
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struct omap_usb *phy = phy_to_omapusb(otg->usb_phy);
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if (!phy->comparator)
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return -ENODEV;
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return phy->comparator->set_vbus(phy->comparator, enabled);
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}
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static int omap_usb_start_srp(struct usb_otg *otg)
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{
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struct omap_usb *phy = phy_to_omapusb(otg->usb_phy);
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if (!phy->comparator)
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return -ENODEV;
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return phy->comparator->start_srp(phy->comparator);
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}
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static int omap_usb_set_host(struct usb_otg *otg, struct usb_bus *host)
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{
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otg->host = host;
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if (!host)
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otg->state = OTG_STATE_UNDEFINED;
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return 0;
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}
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static int omap_usb_set_peripheral(struct usb_otg *otg,
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struct usb_gadget *gadget)
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{
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otg->gadget = gadget;
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if (!gadget)
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otg->state = OTG_STATE_UNDEFINED;
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return 0;
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}
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static int omap_usb_power_off(struct phy *x)
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{
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struct omap_usb *phy = phy_get_drvdata(x);
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omap_control_phy_power(phy->control_dev, 0);
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return 0;
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}
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static int omap_usb_power_on(struct phy *x)
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{
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struct omap_usb *phy = phy_get_drvdata(x);
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omap_control_phy_power(phy->control_dev, 1);
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return 0;
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}
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static int omap_usb_init(struct phy *x)
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{
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struct omap_usb *phy = phy_get_drvdata(x);
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u32 val;
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if (phy->flags & OMAP_USB2_CALIBRATE_FALSE_DISCONNECT) {
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/*
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*
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* Reduce the sensitivity of internal PHY by enabling the
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* DISCON_BYP_LATCH of the USB2PHY_ANA_CONFIG1 register. This
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* resolves issues with certain devices which can otherwise
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* be prone to false disconnects.
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*
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*/
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val = omap_usb_readl(phy->phy_base, USB2PHY_ANA_CONFIG1);
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val |= USB2PHY_DISCON_BYP_LATCH;
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omap_usb_writel(phy->phy_base, USB2PHY_ANA_CONFIG1, val);
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}
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return 0;
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}
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static struct phy_ops ops = {
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.init = omap_usb_init,
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.power_on = omap_usb_power_on,
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.power_off = omap_usb_power_off,
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.owner = THIS_MODULE,
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};
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#ifdef CONFIG_OF
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static const struct usb_phy_data omap_usb2_data = {
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.label = "omap_usb2",
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.flags = OMAP_USB2_HAS_START_SRP | OMAP_USB2_HAS_SET_VBUS,
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};
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static const struct usb_phy_data omap5_usb2_data = {
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.label = "omap5_usb2",
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.flags = 0,
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};
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static const struct usb_phy_data dra7x_usb2_data = {
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.label = "dra7x_usb2",
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.flags = OMAP_USB2_CALIBRATE_FALSE_DISCONNECT,
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};
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static const struct usb_phy_data am437x_usb2_data = {
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.label = "am437x_usb2",
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.flags = 0,
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};
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static const struct of_device_id omap_usb2_id_table[] = {
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{
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.compatible = "ti,omap-usb2",
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.data = &omap_usb2_data,
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},
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{
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.compatible = "ti,omap5-usb2",
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.data = &omap5_usb2_data,
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},
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{
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.compatible = "ti,dra7x-usb2",
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.data = &dra7x_usb2_data,
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},
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{
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.compatible = "ti,am437x-usb2",
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.data = &am437x_usb2_data,
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},
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{},
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};
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MODULE_DEVICE_TABLE(of, omap_usb2_id_table);
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#endif
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static int omap_usb2_probe(struct platform_device *pdev)
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{
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struct omap_usb *phy;
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struct phy *generic_phy;
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struct resource *res;
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struct phy_provider *phy_provider;
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struct usb_otg *otg;
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struct device_node *node = pdev->dev.of_node;
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struct device_node *control_node;
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struct platform_device *control_pdev;
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const struct of_device_id *of_id;
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struct usb_phy_data *phy_data;
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of_id = of_match_device(of_match_ptr(omap_usb2_id_table), &pdev->dev);
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if (!of_id)
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return -EINVAL;
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phy_data = (struct usb_phy_data *)of_id->data;
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phy = devm_kzalloc(&pdev->dev, sizeof(*phy), GFP_KERNEL);
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if (!phy)
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return -ENOMEM;
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otg = devm_kzalloc(&pdev->dev, sizeof(*otg), GFP_KERNEL);
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if (!otg)
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return -ENOMEM;
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phy->dev = &pdev->dev;
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phy->phy.dev = phy->dev;
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phy->phy.label = phy_data->label;
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phy->phy.otg = otg;
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phy->phy.type = USB_PHY_TYPE_USB2;
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if (phy_data->flags & OMAP_USB2_CALIBRATE_FALSE_DISCONNECT) {
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res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
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phy->phy_base = devm_ioremap_resource(&pdev->dev, res);
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if (IS_ERR(phy->phy_base))
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return PTR_ERR(phy->phy_base);
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phy->flags |= OMAP_USB2_CALIBRATE_FALSE_DISCONNECT;
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}
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control_node = of_parse_phandle(node, "ctrl-module", 0);
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if (!control_node) {
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dev_err(&pdev->dev, "Failed to get control device phandle\n");
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return -EINVAL;
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}
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control_pdev = of_find_device_by_node(control_node);
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if (!control_pdev) {
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dev_err(&pdev->dev, "Failed to get control device\n");
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return -EINVAL;
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}
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phy->control_dev = &control_pdev->dev;
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omap_control_phy_power(phy->control_dev, 0);
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otg->set_host = omap_usb_set_host;
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otg->set_peripheral = omap_usb_set_peripheral;
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if (phy_data->flags & OMAP_USB2_HAS_SET_VBUS)
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otg->set_vbus = omap_usb_set_vbus;
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if (phy_data->flags & OMAP_USB2_HAS_START_SRP)
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otg->start_srp = omap_usb_start_srp;
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otg->usb_phy = &phy->phy;
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platform_set_drvdata(pdev, phy);
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pm_runtime_enable(phy->dev);
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generic_phy = devm_phy_create(phy->dev, NULL, &ops);
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if (IS_ERR(generic_phy)) {
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pm_runtime_disable(phy->dev);
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return PTR_ERR(generic_phy);
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}
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phy_set_drvdata(generic_phy, phy);
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phy_provider = devm_of_phy_provider_register(phy->dev,
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of_phy_simple_xlate);
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if (IS_ERR(phy_provider)) {
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pm_runtime_disable(phy->dev);
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return PTR_ERR(phy_provider);
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}
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phy->wkupclk = devm_clk_get(phy->dev, "wkupclk");
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if (IS_ERR(phy->wkupclk)) {
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dev_warn(&pdev->dev, "unable to get wkupclk, trying old name\n");
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phy->wkupclk = devm_clk_get(phy->dev, "usb_phy_cm_clk32k");
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if (IS_ERR(phy->wkupclk)) {
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dev_err(&pdev->dev, "unable to get usb_phy_cm_clk32k\n");
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return PTR_ERR(phy->wkupclk);
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} else {
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dev_warn(&pdev->dev,
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"found usb_phy_cm_clk32k, please fix DTS\n");
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}
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}
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clk_prepare(phy->wkupclk);
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phy->optclk = devm_clk_get(phy->dev, "refclk");
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if (IS_ERR(phy->optclk)) {
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dev_dbg(&pdev->dev, "unable to get refclk, trying old name\n");
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phy->optclk = devm_clk_get(phy->dev, "usb_otg_ss_refclk960m");
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if (IS_ERR(phy->optclk)) {
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dev_dbg(&pdev->dev,
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"unable to get usb_otg_ss_refclk960m\n");
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} else {
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dev_warn(&pdev->dev,
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"found usb_otg_ss_refclk960m, please fix DTS\n");
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}
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} else {
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clk_prepare(phy->optclk);
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}
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usb_add_phy_dev(&phy->phy);
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return 0;
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}
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static int omap_usb2_remove(struct platform_device *pdev)
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{
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struct omap_usb *phy = platform_get_drvdata(pdev);
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clk_unprepare(phy->wkupclk);
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if (!IS_ERR(phy->optclk))
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clk_unprepare(phy->optclk);
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usb_remove_phy(&phy->phy);
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pm_runtime_disable(phy->dev);
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return 0;
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}
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#ifdef CONFIG_PM
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static int omap_usb2_runtime_suspend(struct device *dev)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct omap_usb *phy = platform_get_drvdata(pdev);
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clk_disable(phy->wkupclk);
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if (!IS_ERR(phy->optclk))
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clk_disable(phy->optclk);
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return 0;
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}
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static int omap_usb2_runtime_resume(struct device *dev)
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{
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struct platform_device *pdev = to_platform_device(dev);
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struct omap_usb *phy = platform_get_drvdata(pdev);
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int ret;
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ret = clk_enable(phy->wkupclk);
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if (ret < 0) {
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dev_err(phy->dev, "Failed to enable wkupclk %d\n", ret);
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goto err0;
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}
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if (!IS_ERR(phy->optclk)) {
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ret = clk_enable(phy->optclk);
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if (ret < 0) {
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dev_err(phy->dev, "Failed to enable optclk %d\n", ret);
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goto err1;
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}
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}
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return 0;
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err1:
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clk_disable(phy->wkupclk);
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err0:
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return ret;
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}
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static const struct dev_pm_ops omap_usb2_pm_ops = {
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SET_RUNTIME_PM_OPS(omap_usb2_runtime_suspend, omap_usb2_runtime_resume,
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NULL)
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};
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#define DEV_PM_OPS (&omap_usb2_pm_ops)
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#else
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#define DEV_PM_OPS NULL
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#endif
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static struct platform_driver omap_usb2_driver = {
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.probe = omap_usb2_probe,
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.remove = omap_usb2_remove,
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.driver = {
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.name = "omap-usb2",
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.pm = DEV_PM_OPS,
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.of_match_table = of_match_ptr(omap_usb2_id_table),
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},
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};
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module_platform_driver(omap_usb2_driver);
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MODULE_ALIAS("platform: omap_usb2");
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MODULE_AUTHOR("Texas Instruments Inc.");
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MODULE_DESCRIPTION("OMAP USB2 phy driver");
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MODULE_LICENSE("GPL v2");
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