misc: rtsx: add to support new card reader rts5264 new definition and function

in order to support NEW chip rts5264, the definitions of some internal
registers are define in new file rts5264.h, and some callback functions
and the workflow for rts5264 are define in new file rts5264.c

also add rts5264.o to Makefile

Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/20231208032145.2143580-2-ricky_wu@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

misc: rtsx: add rts5261 efuse function

move rts5261_fetch_vendor_settings() to rts5261_init_from_hw()
make sure it be called from S3 or D3

add more register setting when efuse is set
read efuse setting to register on init flow

Signed-off-by: Ricky Wu <Ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/18101ecb0f0749ccb9f564eda171ba40@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

misc: rtsx: Quiesce rts5249 on system suspend

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>

misc: rtsx: Rework runtime power management flow

Commit 5b4258f6721f ("misc: rtsx: rts5249 support runtime PM")
uses "rtd3_work" and "idle_work" to manage it's own runtime PM state
machine.

When its child device, rtsx_pci_sdmmc, uses runtime PM refcount
correctly, all the additional works can be managed by generic runtime PM
helpers.

So consolidate "idle_work" and "rtd3_work" into generic runtime idle
callback and runtime suspend callback, respectively.

Fixes: 5b4258f6721f ("misc: rtsx: rts5249 support runtime PM")
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/20220125055010.1866563-2-kai.heng.feng@canonical.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

misc: rtsx: separate aspm mode into MODE_REG and MODE_CFG

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>

misc: rtsx: rts5249 support runtime PM

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>

misc: rtsx: Add hardware auto power off for RTS5261

This patch enable hardware auto power off when card is removed.

Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/1604397312-2991-1-git-send-email-rui_feng@realsil.com.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

mmc: rtsx: Add test mode for RTS5261

This patch add test mode for RTS5261.
If test mode is set, reader will switch to SD Express mode
mandatorily, and this mode is used by factory testing only.

Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/1604397269-2780-1-git-send-email-rui_feng@realsil.com.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

misc: rtsx: Add SD Express mode support for RTS5261

RTS5261 support SD mode and PCIe/NVMe mode. The workflow is as follows.
1.RTS5261 work in SD mode and set MMC_CAPS2_SD_EXP flag.
2.If card is plugged in, Host send CMD8 to ask card's PCIe availability.
3.If the card has PCIe availability and WP is not set, init_sd_express() will be invoked,
RTS5261 switch to PCIe/NVMe mode.
4.Mmc driver handover it to NVMe driver.
5.If card is unplugged, RTS5261 will switch to SD mode.

Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Link: https://lore.kernel.org/r/1603936668-3363-1-git-send-email-rui_feng@realsil.com.cn
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>

misc: rtsx: Use standard PCI definitions

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>

misc: rtsx: Find L1 PM Substates capability instead of hard-coding

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>

misc: rtsx: Remove rtsx_pci_read/write_config() wrappers

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>

misc: rtsx: Remove unused pcie_cap

There are no more uses of struct rtsx_pcr.pcie_cap. Remove it.

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Link: https://lore.kernel.org/r/20200721212336.1159079-3-helgaas@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

misc: rtsx: Add support new chip rts5228 mmc: rtsx: Add support MMC_CAP2_NO_MMC

In order to support new chip rts5228, the definitions of some internal
registers and workflow have to be modified.
Added rts5228.c rts5228.h for independent functions of the new chip rts5228

Signed-off-by: Ricky Wu <ricky_wu@realtek.com>
Link: https://lore.kernel.org/r/20200706070259.32565-1-ricky_wu@realtek.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

misc: rtsx: Use pcie_capability_clear_and_set_word() for PCI_EXP_LNKCTL

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>

misc: rtsx: Removed unused dev_aspm_mode

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>

misc: rtsx: Remove unused pcr_ops

Remove the following unused function pointers from struct pcr_ops:

int (*set_ltr_latency)(struct rtsx_pcr *pcr, u32 latency);
int (*set_l1off_sub)(struct rtsx_pcr *pcr, u8 val);
void (*full_on)(struct rtsx_pcr *pcr);
void (*power_saving)(struct rtsx_pcr *pcr);

Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Link: https://lore.kernel.org/r/20200521180545.1159896-2-helgaas@kernel.org
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

misc: rtsx: Add support for RTS5261

Add support for new chip rts5261.
In order to support rts5261, the definitions of some internal registers
and workflow have to be modified and are different from its predecessors.
So we need this patch to ensure RTS5261 can work.

Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
Link: https://lore.kernel.org/r/1571645105-5028-1-git-send-email-rui_feng@realsil.com.cn
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 17

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>

misc: rtsx: rename SG_END macro

A change to the generic scatterlist code caused a conflict with
the rtsx card reader driver:

In file included from drivers/misc/cardreader/rtsx_pcr.c:32:
include/linux/rtsx_pci.h:40: error: "SG_END" redefined [-Werror]

This changes one instance of the driver to prefix SG_END and
related constants.

Fixes: 723fbf563a6a ("lib/scatterlist: Add SG_CHAIN and SG_END macros for LSB encodings")
Cc: Anshuman Khandual <khandual@linux.vnet.ibm.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>

misc: rtsx: Add support for RTS5260

Add support for new chip rts5260.
In order to support rts5260, the definitions of
some internal registers and workflow have to be
modified and are different from its predecessors
and OCP function is added for RTS5260. So we need
this patch to ensure RTS5260 can work.

Signed-off-by: Rui Feng <rui_feng@realsil.com.cn>
Reviewed-by: Daniel Bristot de Oliveira <bristot@redhat.com>
Tested-by: Perry Yuan <perry_yuan@dell.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

misc: rtsx: Move Realtek Card Reader Driver to misc

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>