kernel/drivers/misc/cardreader/rts5227.c, branch linux-rolling-stable

misc: rtsx_pci: Add separate CD/WP pin polarity reversal support

2025-08-19T10:37:10Z

Previously, the Card Detect (CD) and Write Protect (WP) pins shared the same reverse polarity setting in the configuration space. This meant both signals were reversed together, without the ability to configure them individually. This patch introduces two new parameters: sd_cd_reverse_en – enable reverse polarity for the CD pin. sd_wp_reverse_en – enable reverse polarity for the WP pin. With this change, the controller can now support: 1.Reversing both CD and WP pins together (original behavior). 2.Reversing CD and WP pins separately (newly added behavior), if supported by the configuration space. This provides greater flexibility when dealing with devices that have independent polarity requirements for CD and WP pins. Signed-off-by: Ricky Wu Link: https://lore.kernel.org/r/20250812063521.2427696-1-ricky_wu@realtek.com Signed-off-by: Greg Kroah-Hartman

misc: rtsx: Fix some platforms can not boot and move the l1ss judgment to probe

2023-09-25T08:48:19Z

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 Reported-by: Paul Grandperrin Signed-off-by: Ricky Wu Tested-By: Jade Lovelace Link: https://lore.kernel.org/r/37b1afb997f14946a8784c73d1f9a4f5@realtek.com Signed-off-by: Greg Kroah-Hartman

misc: rtsx: judge ASPM Mode to set PETXCFG Reg

2023-08-04T13:52:43Z

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 Link: https://lore.kernel.org/r/52906c6836374c8cb068225954c5543a@realtek.com Signed-off-by: Greg Kroah-Hartman

misc: rtsx: rts522a rts5228 rts5261 support Runtime PM

2022-02-25T11:11:16Z

rts522a, rts5228, rts5261 add extra init flow for rtd3 add more power_down setting for avoid being woken up by plugging or unplugging card when system in S3 Tested-by: Kai-Heng Feng Signed-off-by: Ricky Wu Link: https://lore.kernel.org/r/dace32f573a445908fec0a10482c394c@realtek.com Signed-off-by: Greg Kroah-Hartman

misc: rtsx: separate aspm mode into MODE_REG and MODE_CFG

2021-06-09T17:10:22Z

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 Tested-by: Gordon Lack Cc: stable Signed-off-by: Ricky Wu Link: https://lore.kernel.org/r/20210607101634.4948-1-ricky_wu@realtek.com Signed-off-by: Greg Kroah-Hartman

misc: rtsx: init of rts522a add OCP power off when no card is present

2021-02-04T16:09:32Z

Power down OCP for power consumption when no SD/MMC card is present Cc: stable@vger.kernel.org Signed-off-by: Ricky Wu Link: https://lore.kernel.org/r/20210204083115.9471-1-ricky_wu@realtek.com Signed-off-by: Greg Kroah-Hartman

misc: rtsx: Add power saving functions and fix driving parameter

2020-09-16T15:30:37Z

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 Link: https://lore.kernel.org/r/20200907100731.7722-1-ricky_wu@realtek.com Signed-off-by: Greg Kroah-Hartman

misc: rtsx: Fix power down flow

2020-09-16T15:30:37Z

Fix and sort out rtsx driver power down flow Signed-off-by: Ricky Wu Link: https://lore.kernel.org/r/20200907100718.7672-1-ricky_wu@realtek.com Signed-off-by: Greg Kroah-Hartman

misc: rtsx: Remove rtsx_pci_read/write_config() wrappers

2020-07-22T11:29:44Z

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 Acked-by: Arnd Bergmann 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

misc: rtsx: set correct pcr_ops for rts522A

2020-03-26T14:50:38Z

rts522a should use rts522a_pcr_ops, which is diffrent with rts5227 in phy/hw init setting. Fixes: ce6a5acc9387 ("mfd: rtsx: Add support for rts522A") Signed-off-by: YueHaibing Cc: stable Link: https://lore.kernel.org/r/20200326032618.20472-1-yuehaibing@huawei.com Signed-off-by: Greg Kroah-Hartman