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path: root/drivers/misc/cardreader/rts5249.c
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2023-09-25misc: rtsx: Fix some platforms can not boot and move the l1ss judgment to probeRicky WU
commit 101bd907b424 ("misc: rtsx: judge ASPM Mode to set PETXCFG Reg") some readers no longer force #CLKREQ to low when the system need to enter ASPM. But some platform maybe not implement complete ASPM? it causes some platforms can not boot Like in the past only the platform support L1ss we release the #CLKREQ. Move the judgment (L1ss) to probe, we think read config space one time when the driver start is enough Fixes: 101bd907b424 ("misc: rtsx: judge ASPM Mode to set PETXCFG Reg") Cc: stable <stable@kernel.org> Reported-by: Paul Grandperrin <paul.grandperrin@gmail.com> Signed-off-by: Ricky Wu <ricky_wu@realtek.com> Tested-By: Jade Lovelace <lists@jade.fyi> Link: https://lore.kernel.org/r/37b1afb997f14946a8784c73d1f9a4f5@realtek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2023-08-04misc: rtsx: judge ASPM Mode to set PETXCFG RegRicky WU
ASPM Mode is ASPM_MODE_CFG need to judge the value of clkreq_0 to set HIGH or LOW, if the ASPM Mode is ASPM_MODE_REG always set to HIGH during the initialization. Cc: stable@vger.kernel.org Signed-off-by: Ricky Wu <ricky_wu@realtek.com> Link: https://lore.kernel.org/r/52906c6836374c8cb068225954c5543a@realtek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2022-01-26misc: rtsx: Quiesce rts5249 on system suspendKai-Heng Feng
Set more registers in force_power_down callback to avoid S3 wakeup from hotplugging cards. This is originally written by Ricky WU. Link: https://lore.kernel.org/lkml/c4525b4738f94483b9b8f8571fc80646@realtek.com/ Cc: Ricky WU <ricky_wu@realtek.com> Tested-by: Ricky WU <ricky_wu@realtek.com> Signed-off-by: Kai-Heng Feng <kai.heng.feng@canonical.com> Link: https://lore.kernel.org/r/20220125055010.1866563-4-kai.heng.feng@canonical.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-06-09misc: rtsx: separate aspm mode into MODE_REG and MODE_CFGRicky Wu
aspm (Active State Power Management) rtsx_comm_set_aspm: this function is for driver to make sure not enter power saving when processing of init and card_detcct ASPM_MODE_CFG: 8411 5209 5227 5229 5249 5250 Change back to use original way to control aspm ASPM_MODE_REG: 5227A 524A 5250A 5260 5261 5228 Keep the new way to control aspm Fixes: 121e9c6b5c4c ("misc: rtsx: modify and fix init_hw function") Reported-by: Chris Chiu <chris.chiu@canonical.com> Tested-by: Gordon Lack <gordon.lack@dsl.pipex.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Ricky Wu <ricky_wu@realtek.com> Link: https://lore.kernel.org/r/20210607101634.4948-1-ricky_wu@realtek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-12-09misc: rtsx: rts5249 support runtime PMRicky Wu
rtsx_pcr: add callback functions to support runtime PM add delay_work to put device to D3 after idle over 10 sec rts5249: add extra init flow for rtd3 and set rtd3_en from config setting rtsx_pci_sdmmc: child device support autosuspend Signed-off-by: Ricky Wu <ricky_wu@realtek.com> Link: https://lore.kernel.org/r/20201202065857.19412-1-ricky_wu@realtek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-16misc: rtsx: Add power saving functions and fix driving parameterRicky Wu
v4: split power down flow and power saving function to two patch v5: fix up modified change under the --- line Add rts522a L1 sub-state support Save more power on rts5227 rts5249 rts525a rts5260 Fix rts5260 driving parameter Signed-off-by: Ricky Wu <ricky_wu@realtek.com> Link: https://lore.kernel.org/r/20200907100731.7722-1-ricky_wu@realtek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-09-16misc: rtsx: Fix power down flowRicky Wu
Fix and sort out rtsx driver power down flow Signed-off-by: Ricky Wu <ricky_wu@realtek.com> Link: https://lore.kernel.org/r/20200907100718.7672-1-ricky_wu@realtek.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-22misc: rtsx: Use standard PCI definitionsBjorn Helgaas
When reading registers defined by the PCIe spec, use the names already defined by the PCI core. This makes maintenance of the PCI core and drivers easier. No functional change intended. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200721212336.1159079-6-helgaas@kernel.org [ additional replacements due to changes in my tree - gregkh ] Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-22misc: rtsx: Find L1 PM Substates capability instead of hard-codingBjorn Helgaas
Instead of hard-coding the location of the L1 PM Substates capability based on the Device ID, search for it in the extended capabilities list. This works for any device, as long as it implements the L1 PM Substates capability correctly, so it doesn't require maintenance as new devices are added. No functional change intended. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200721212336.1159079-5-helgaas@kernel.org [ minor addition due to differences in my tree - gregkh] Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-07-22misc: rtsx: Remove rtsx_pci_read/write_config() wrappersBjorn Helgaas
rtsx_pci_read_config_dword() and similar wrappers around the PCI config accessors add very little value, and they obscure the fact that often we are accessing standard PCI registers that should be coordinated with the PCI core. Remove the wrappers and use the PCI config accessors directly. No functional change intended. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Link: https://lore.kernel.org/r/20200721212336.1159079-4-helgaas@kernel.org [ fixed up some other instances as original patch was based on old tree - gregkh Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-22misc: rtsx: Remove unnecessary rts5249_set_aspm(), rts5260_set_aspm()Bjorn Helgaas
rts5249_set_aspm() and rts5260_set_aspm() do nothing more than the default rtsx_comm_set_aspm() does, so remove them and use the default. No functional change intended. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20200521180545.1159896-7-helgaas@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-22misc: rtsx: Use pcie_capability_clear_and_set_word() for PCI_EXP_LNKCTLBjorn Helgaas
Instead of using the driver-specific rtsx_pci_update_cfg_byte() to update the PCIe Link Control Register, use pcie_capability_clear_and_set_word() like the rest of the kernel does. This makes it easier to maintain ASPM across the PCI core and drivers. Remove the now-unused rtsx_pci_update_cfg_byte() and ASPM_MASK_NEG definitions. No functional change intended. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20200521180545.1159896-5-helgaas@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-05-22misc: rtsx: Removed unused dev_aspm_modeBjorn Helgaas
The struct rtsx_cr_option.dev_aspm_mode member is never set to anything other than DEV_ASPM_DYNAMIC (0). Remove it and code that tests it. No functional change intended. Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Link: https://lore.kernel.org/r/20200521180545.1159896-3-helgaas@kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-18mmc: rtsx_pci: Fix support for speed-modes that relies on tuningRicky Wu
The TX/RX register should not be treated the same way to allow for better support of tuning. Fix this by using a default initial value for TX. Signed-off-by: Ricky Wu <ricky_wu@realtek.com> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/20200316025232.1167-1-ricky_wu@realtek.com [Ulf: Updated changelog] Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-21treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 17Thomas Gleixner
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 or at your option any later version this program is distributed in the hope that it will be useful but without any warranty without even the implied warranty of merchantability or fitness for a particular purpose see the gnu general public license for more details you should have received a copy of the gnu general public license along with this program if not see http www gnu org licenses extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 13 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Steve Winslow <swinslow@gmail.com> Reviewed-by: Jilayne Lovejoy <opensource@jilayne.com> Reviewed-by: Kate Stewart <kstewart@linuxfoundation.org> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190519154042.236620792@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-02-26misc: rtsx: Enable OCP for rts522a rts524a rts525a rts5260RickyWu
this enables and adds OCP function for Realtek A series cardreader chips and fixes some OCP flow in rts5260.c Signed-off-by: RickyWu <ricky_wu@realtek.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-29misc: rtsx: Move Realtek Card Reader Driver to miscRui Feng
Because Realtek card reader drivers are pcie and usb drivers, and they bridge mmc subsystem and memstick subsystem, they are not mfd drivers. Greg and Lee Jones had a discussion about where to put the drivers, the result is that misc is a good place for them, so I move all files to misc. If I don't move them to a right place, I can't add any patch for this driver. Signed-off-by: Rui Feng <rui_feng@realsil.com.cn> Reviewed-by: Daniel Bristot de Oliveira <bristot@redhat.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Tested-by: Perry Yuan <perry_yuan@dell.com> Signed-off-by: Lee Jones <lee.jones@linaro.org>
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