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freebsd-dev/sys/dev/sdhci
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Edward Tomasz Napierala 220adb0416 Make sdhci(4) work after suspend/resume for chipsets that require 
the frequency quirk. This makes it work on eg ThinkPad T420.

Without it, after resume one can see this:

mmc0: ACMD42 failed, RESULT: 4
mmcsd0: Error indicated: 1 Timeout
mmcsd0: Error indicated: 2 Bad CRC
mmcsd0: Error indicated: 2 Bad CRC
mmcsd0: Error indicated: 2 Bad CRC
mmcsd0: Error indicated: 2 Bad CRC
sdhci_pci0-slot0: Got data interrupt 0x00200000, but there is no active command.
sdhci_pci0-slot0: ============== REGISTER DUMP ==============
sdhci_pci0-slot0: Sys addr: 0x06317200 | Version: 0x00000502
sdhci_pci0-slot0: Blk size: 0x00000200 | Blk cnt: 0x00000010
sdhci_pci0-slot0: Argument: 0x00000200 | Trn mode: 0x00000037
sdhci_pci0-slot0: Present: 0x01ff0000 | Host ctl: 0x00000007
sdhci_pci0-slot0: Power: 0x0000000f | Blk gap: 0x00000000
sdhci_pci0-slot0: Wake-up: 0x00000000 | Clock: 0x00000007
sdhci_pci0-slot0: Timeout: 0x0000000d | Int stat: 0x00000000
sdhci_pci0-slot0: Int enab: 0x01ff00fb | Sig enab: 0x01ff00fb
sdhci_pci0-slot0: AC12 err: 0x00000000 | Slot int: 0x00000000
sdhci_pci0-slot0: Caps: 0x21e8c8b2 | Max curr: 0x00000040
sdhci_pci0-slot0: ===========================================
sdhci_pci0-slot0: Got data interrupt 0x00200000, but there is no active command.
sdhci_pci0-slot0: ============== REGISTER DUMP ==============
sdhci_pci0-slot0: Sys addr: 0x06317200 | Version: 0x00000502
sdhci_pci0-slot0: Blk size: 0x00000200 | Blk cnt: 0x00000001
sdhci_pci0-slot0: Argument: 0x00000040 | Trn mode: 0x00000013
sdhci_pci0-slot0: Present: 0x01ff0000 | Host ctl: 0x00000007
sdhci_pci0-slot0: Power: 0x0000000f | Blk gap: 0x00000000
sdhci_pci0-slot0: Wake-up: 0x00000000 | Clock: 0x00000007
sdhci_pci0-slot0: Timeout: 0x0000000d | Int stat: 0x00000000
autofs_flush: /net flushed
sdhci_pci0-slot0: Int enab: 0x01ff00fb | Sig enab: 0x01ff00fb
autofs_flush: /media flushed
sdhci_pci0-slot0: AC12 err: 0x00000000 | Slot int: 0x00000000
sdhci_pci0-slot0: Caps: 0x21e8c8b2 | Max curr: 0x00000040
sdhci_pci0-slot0: ===========================================

Afterwards all operations on /dev/mmcsd0 fail with EIO.

Reviewed by:	jhb@
MFC after:	1 month
Sponsored by:	The FreeBSD Foundation
Differential Revision:	https://reviews.freebsd.org/D6265
2016-05-11 07:50:35 +00:00
..
sdhci_fdt.c Fix fallout from r292180 (Dec 2015)... ensure that every driver which has 2016-03-21 00:52:24 +00:00
sdhci_if.m
sdhci_pci.c Make sdhci(4) work after suspend/resume for chipsets that require 2016-05-11 07:50:35 +00:00
sdhci.c Add support for the BCM57765 card reader. 2015-10-15 04:22:56 +00:00
sdhci.h Add support for the BCM57765 card reader. 2015-10-15 04:22:56 +00:00