Commit Graph

67 Commits

Author SHA1 Message Date
Thomas Gleixner 8d7c56d08f treewide: Replace GPLv2 boilerplate/reference with SPDX - rule 45
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

extracted by the scancode license scanner the SPDX license identifier

  GPL-2.0-or-later

has been chosen to replace the boilerplate/reference in 11 file(s).

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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/20190520170858.370933192@linutronix.de
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2019-05-24 17:27:12 +02:00
Suman Tripathi 20bdc376b4 ata: Disable AHCI ALPM feature for Ampere Computing eMAG SATA
Due to hardware errata, Ampere Computing eMAG SATA can't support
AHCI ALPM feature. This patch disables the AHCI ALPM feature for
eMAG SATA.

Signed-off-by: Suman Trpathi <stripathi@amperecomputing.com>
Signed-off-by: Rameshwar Prasad Sahu <rameshwar.sahu@amperecomputing.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
2018-09-07 08:32:17 -06:00
Linus Torvalds 0519359784 Merge branch 'for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata updates from Tejun Heo:
 "Nothing too interesting. Mostly ahci and ahci_platform changes, many
  around power management"

* 'for-4.19' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata: (22 commits)
  ata: ahci_platform: enable to get and control reset
  ata: libahci_platform: add reset control support
  ata: add an extra argument to ahci_platform_get_resources()
  ata: sata_rcar: Add r8a77965 support
  ata: sata_rcar: exclude setting of PHY registers in Gen3
  ata: sata_rcar: really mask all interrupts on Gen2 and later
  Revert "ata: ahci_platform: allow disabling of hotplug to save power"
  ata: libahci: Allow reconfigure of DEVSLP register
  ata: libahci: Correct setting of DEVSLP register
  ata: ahci: Enable DEVSLP by default on x86 with SLP_S0
  ata: ahci: Support state with min power but Partial low power state
  Revert "ata: ahci_platform: convert kcalloc to devm_kcalloc"
  ata: sata_rcar: Add rudimentary Runtime PM support
  ata: sata_rcar: Provide a short-hand for &pdev->dev
  ata: Only output sg element mapped number in verbose debug
  ata: Guard ata_scsi_dump_cdb() by ATA_VERBOSE_DEBUG
  ata: ahci_platform: convert kcalloc to devm_kcalloc
  ata: ahci_platform: convert kzallloc to kcalloc
  ata: ahci_platform: correct parameter documentation for ahci_platform_shutdown
  libata: remove ata_sff_data_xfer_noirq()
  ...
2018-08-24 13:20:33 -07:00
Kunihiko Hayashi 2d17f460c5 ata: ahci_platform: enable to get and control reset
Unlike SoC-specific driver, generic ahci_platform driver doesn't
have any chances to control resets.

This adds AHCI_PLATFORM_GET_RESETS to ahci_platform_get_resources()
on the generic driver to enable reset control support.

Suggested-by: Hans de Goede <hdegoede@redhat.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2018-08-22 08:08:28 -07:00
Kunihiko Hayashi 16af2d6584 ata: add an extra argument to ahci_platform_get_resources()
Add an extra argument to ahci_platform_get_resources(), that is
for the bitmap representing the resource to get in this function.

Currently there is no resources to be defined, so all the callers set
'0' to the argument.

Suggested-by: Hans de Goede <hdegoede@redhat.com>
Cc: Thierry Reding <thierry.reding@gmail.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>
Cc: Patrice Chotard <patrice.chotard@st.com>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2018-08-22 08:08:27 -07:00
Tejun Heo eac7e072d7 Revert "ata: ahci_platform: allow disabling of hotplug to save power"
This reverts commit aece27a2f0.

Causes boot failure on some devices.

 http://lore.kernel.org/r/CA+G9fYuKW_jCFZPqG4tz=QY9ROfHO38KiCp9XTA+KaDOFVtcqQ@mail.gmail.com

Signed-off-by: Tejun Heo <tj@kernel.org>
2018-08-06 10:22:35 -07:00
Krzysztof Kozlowski 956698445d ata: ahci-platform: Remove support for Exynos5440
The Exynos5440 is not actively developed, there are no development
boards available and probably there are no real products with it.
Remove wide-tree support for Exynos5440.

Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
2018-07-17 19:55:44 +02:00
Samuel Morris aece27a2f0 ata: ahci_platform: allow disabling of hotplug to save power
A number of resources remain powered to support hotplug. On platforms
I've worked with, allowing the ahci_platform to suspend saves about
150mW. This patch enables rpm and allows the device to be auto-suspended
through sysfs.

Signed-off-by: Samuel Morris <samorris@lexmark.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2018-06-18 10:58:55 -07:00
Nate Watterson 8eede5bc4e ata: ahci_platform: Add shutdown handler
The newly introduced ahci_platform_shutdown() method is called during
system shutdown to disable host controller DMA and interrupts in order
to avoid potentially corrupting or otherwise interfering with a new
kernel being started with kexec.

Signed-off-by: Nate Watterson <nwatters@codeaurora.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
2017-08-04 13:34:14 -07:00
Srinivas Kandagatla 17dcc37e3e ata: ahci-platform: Add ports-implemented DT bindings.
On some SOCs PORTS_IMPL register value is never programmed by the
firmware and left at zero value. Which means that no sata ports are
available for software. AHCI driver used to cope up with this by
fabricating the port_map if the PORTS_IMPL register is read zero,
but recent patch broke this workaround as zero value was valid for
NVMe disks.

This patch adds ports-implemented DT bindings as workaround for this issue
in a way that DT can can override the PORTS_IMPL register in cases where
the firmware did not program it already.

Fixes: 566d1827df ("libata: disable forced PORTS_IMPL for >= AHCI 1.3")
Cc: stable@vger.kernel.org # v4.5+
Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Acked-by: Tejun Heo <tj@kernel.org>
Reviewed-by: Andy Gross <andy.gross@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
2016-04-01 10:30:30 -04:00
Aleksey Makarov a2127e400e libata: support AHCI on OCTEON platform
The OCTEON SATA controller is currently found on cn71XX devices.

Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: David Daney <david.daney@cavium.com>
Signed-off-by: Vinita Gupta <vgupta@caviumnetworks.com>
Signed-off-by: Aleksey Makarov <aleksey.makarov@auriga.com>
Signed-off-by: Zubair Lutfullah Kakakhel <Zubair.Kakakhel@imgtec.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2016-02-11 10:12:04 -05:00
Tang Yuantian fc4f370d77 Revert "ahci: added support for Freescale AHCI sata"
This reverts commit 5163fb6254
("ahci: added support for Freescale AHCI sata")

The reverted patch added Freescale QorIQ AHCI sata support to
ahci_platform driver though, but it left SoC specific settings to uboot.
It leads to QorIQ sata heavily depending on uboot. In order to removing
the dependency we first revert the old patch and then will add a new driver
for QorIQ SATA.
Since there are no LS* platforms that have been upstreamed, So
the revert would not break anything exists.

Signed-off-by: Tang Yuantian <Yuantian.Tang@freescale.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-09-08 12:30:06 -04:00
Suthikulpanit, Suravee 2051e92486 ata: ahci_platform: Add ACPI _CLS matching
This patch adds ACPI supports for AHCI platform driver, which uses _CLS
method to match the device.

The following is an example of ASL structure in DSDT for a SATA controller,
which contains _CLS package to be matched by the ahci_platform driver:

  Device (AHC0) // AHCI Controller
  {
    Name(_HID, "AMDI0600")
    Name (_CCA, 1)
    Name (_CLS, Package (3)
    {
      0x01, // Base Class: Mass Storage
      0x06, // Sub-Class: serial ATA
      0x01, // Interface: AHCI
    })
    Name (_CRS, ResourceTemplate ()
    {
      Memory32Fixed (ReadWrite, 0xE0300000, 0x00010000)
      Interrupt (ResourceConsumer, Level, ActiveHigh, Exclusive,,,) { 387 }
    })
  }

Also, since ATA driver should not require PCI support for ATA_ACPI,
this patch removes dependency in the driver/ata/Kconfig.

Acked-by: Tejun Heo <tj@kernel.org>
Acked-by: Mika Westerberg <mika.westerberg@linux.intel.com>
Reviewed-by: Hanjun Guo <hanjun.guo@linaro.org>
Signed-off-by: Suravee Suthikulpanit <Suravee.Suthikulpanit@amd.com>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2015-07-07 01:55:21 +02:00
Tang Yuantian 5163fb6254 ahci: added support for Freescale AHCI sata
Freescale introduced QorIQ series SOCs, like ls1021 ls2085, with AHCI
sata support. It complies with the serial ATA 3.0 specification
and the AHCI 1.3 specification.

Signed-off-by: Shaohui Xie <Shaohui.Xie@freescale.com>
Signed-off-by: Yuantian Tang <Yuantian.Tang@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2015-06-09 14:02:15 +09:00
Akinobu Mita 018d5ef204 ata: ahci_platform: fix owner module reference mismatch for scsi host
The owner module reference of the ahci platform's scsi_host is
initialized to libahci_platform's one, because these drivers use a
scsi_host_template defined in libahci_platform.  So these drivers can
be unloaded even if the scsi device is being accessed.

This fixes it by pushing the scsi_host_template from libahci_platform
to all leaf drivers.  The scsi_host_template is passed through a new
argument of ahci_platform_init_host().

Signed-off-by: Akinobu Mita <akinobu.mita@gmail.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: Hans de Goede <hdegoede@redhat.com>
Cc: Christoph Hellwig <hch@lst.de>
Cc: "James E.J. Bottomley" <JBottomley@parallels.com>
Cc: linux-ide@vger.kernel.org
Cc: linux-scsi@vger.kernel.org
2015-01-28 18:45:23 -05:00
Wolfram Sang 65c662ab63 ata: drop owner assignment from platform_drivers
A platform_driver does not need to set an owner, it will be populated by the
driver core.

Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2014-10-20 16:20:17 +02:00
Bartlomiej Zolnierkiewicz 515d9b2c03 ata: remove deprecated struct ahci_platform_data
The last user of the deprecated struct ahci_platform_data has been
cleaned up recently (SPEAr1340 got a proper PHY driver).

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-08-16 08:35:34 -04:00
Antoine Ténart 30f3c73c9b ata: ahci_platform: add a generic AHCI compatible
The ahci_platform driver is a generic driver using the libahci_platform
functions. Add a generic compatible to avoid having an endless list of
compatibles with no differences for the same driver.

Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
2014-07-30 15:39:46 -04:00
Antoine Ténart 725c7b570f ata: libahci_platform: move port_map parameters into the AHCI structure
This patch moves force_port_map and mask_port_map into the
ahci_host_priv structure. This allows to modify them into the AHCI
framework. This is needed by the new dt bindings representing ports as
the port_map mask is computed automatically.

Parameters modifying force_port_map, mask_port_map and flags have been
removed from the ahci_platform_init_host() function, and inputs in the
ahci_host_priv structure are now directly filed.

Signed-off-by: Antoine Ténart <antoine.tenart@free-electrons.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-07-30 15:39:46 -04:00
Kefeng Wang 72cbaa3d2f ahci: disable ncq feature for hisilicon sata
NCQ feature is unsupported on hisilicon sata controller, so disable
it.  This version of IP is used by hip04 and hix5hd2 soc.

tj: "|=" was replaced with "=" for no reason.  Restored "|=".

Signed-off-by: Kefeng Wang <kefeng.wang@linaro.org>
Sigend-off-by: Tejun Heo <tj@kernel.org>
2014-06-24 16:54:23 -04:00
Kefeng Wang a1a205df6e ahci: add support for Hisilicon sata
The hip04 SoC of hisilicon has an AHCI compliant SATA controller,
and it is compliant with the ahci 1.3 and sata 3.0 specification.

There is a wrong bit in HOST_CAP of hip04 sata controller, which
enable unsupported feature of FBS, use AHCI_HFLAG_NO_FBS hflag to
disable it.

Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kefeng Wang <kefeng.wang@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-05-14 13:07:10 -04:00
Kefeng Wang f9f3691790 libahci_platform: add host_flags parameter in ahci_platform_init_host()
Add a dynamic host_flags argument to make ahci_platform_init_host more flexible,
then remove the AHCI_HFLAGS(...) argument from some driver's ata_port_info,
and pass that in as the new argument.

Cc: Hans de Geode <hdegoede@redhat.com>
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kefeng Wang <kefeng.wang@linaro.org>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-05-14 13:07:10 -04:00
Bartlomiej Zolnierkiewicz fd990556f0 ata: move library code from ahci_platform.c to libahci_platform.c
Move AHCI platform library code from ahci_platform.c to
libahci_platform.c and fix dependencies for ahci_st,
ahci_imx and ahci_sunxi drivers.

Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-03-25 15:17:13 -04:00
Bartlomiej Zolnierkiewicz 83b03fd67b ata: ahci_platform: fix ahci_platform_data->suspend method handling
Looking at ST SPEAr1340 AHCI code (the only user of the deprecated
pdata->suspend and pdata->resume) it is obvious the we should return
after calling pdata->suspend() only if the function have returned
non-zero return value.  The code has been broken since commit 1e70c2
("ata/ahci_platform: Add clock framework support").  Fix it.

Cc: Viresh Kumar <viresh.linux@gmail.com>
Cc: Shiraz Hashim <shiraz.hashim@st.com>
Acked-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-03-25 15:17:13 -04:00
Bartlomiej Zolnierkiewicz 5434b20315 ata: ahci_platform: fix devm_ioremap_resource() return value checking
devm_ioremap_resource() returns a pointer to the remapped memory or
an ERR_PTR() encoded error code on failure.  Fix the check inside
ahci_platform_get_resources() accordingly.

Also while at it remove a needless line break.

Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-03-14 14:30:28 -04:00
Hans de Goede 6ef95e8776 ahci_platform: Drop unused ahci_platform_data members
These members are not used anywhere, and in the future we want
ahci_platform_data to go away entirely so there is no reason to keep these
around.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-02-22 17:13:01 -05:00
Hans de Goede c093e1d36e ahci_platform: Drop support for imx53-ahci platform device type
Since the 3.13 release the ahci_imx driver has proper devicetree enabled
support for ahci on imx53 and that is used instead of the old board file
created imx53-ahci platform device.

Note this patch also complete drops the id-table, an id-table is not needed
for a single id platform driver, the name field in the driver struct suffices.

And the code already has an explicit "MODULE_ALIAS("platform:ahci");" so the
id-table is not needed for that either.

Cc: Marek Vasut <marex@denx.de>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-02-22 17:13:01 -05:00
Hans de Goede f1df8641e2 ahci_platform: Drop support for ahci-strict platform device type
I've done a grep over the entire kernel tree and nothing is using this
(anymore?).

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-02-22 17:13:01 -05:00
Roger Quadros e708e46eda ata: ahci_platform: runtime resume the device before use
On OMAP platforms the device needs to be runtime resumed before it can
be accessed. The OMAP HWMOD framework takes care of enabling the
module and its resources based on the device's runtime PM state.

In this patch we runtime resume during .probe() and runtime suspend
after .remove().

We also update the runtime PM state during .resume().

CC: Balaji T K <balajitk@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-02-22 15:35:43 -05:00
Roger Quadros 21b5faeec2 ata: ahci_platform: Manage SATA PHY
Some platforms have a PHY hooked up to the SATA controller. The PHY
needs to be initialized and powered up for SATA to work. We do that
using the PHY framework.

tj: Minor comment formatting updates.

CC: Balaji T K <balajitk@ti.com>
Signed-off-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo<tj@kernel.org>
2014-02-22 15:35:43 -05:00
Roger Quadros c431147184 ata: ahci_platform: Add DT compatible for Synopsis DWC AHCI controller
Add compatible string "snps,dwc-ahci", which should be used
for Synopsis Designware SATA cores. e.g. on TI OMAP5 and DRA7 platforms.

Signed-off-by: Roger Quadros <rogerq@ti.com>
Reviewed-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-02-22 15:35:42 -05:00
Hans de Goede 648cb6fd83 ahci-platform: "Library-ise" suspend / resume functionality
Split suspend / resume code into host suspend / resume functionality and
resource enable / disabling phases, and export the new suspend_ / resume_host
functions.

tj: Minor comment formatting updates.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-02-22 15:35:42 -05:00
Hans de Goede 23b07d4cb3 ahci-platform: "Library-ise" ahci_probe functionality
ahci_probe consists of 3 steps:
1) Get resources (get mmio, clks, regulator)
2) Enable resources, handled by ahci_platform_enable_resouces
3) The more or less standard ahci-host controller init sequence

This commit refactors step 1 and 3 into separate functions, so the platform
drivers for AHCI implementations which need a specific order in step 2,
and / or need to do some custom register poking at some time, can re-use
ahci-platform.c code without needing to copy and paste it.

Note that ahci_platform_init_host's prototype takes the 3 non function
members of ahci_platform_data as arguments, the idea is that drivers using
the new exported utility functions will not use ahci_platform_data at all,
and hopefully in the future ahci_platform_data can go away entirely.

tj: Minor comment formatting updates.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-02-22 15:35:42 -05:00
Hans de Goede 96a01ba52c ahci-platform: Add enable_ / disable_resources helper functions
tj: Minor comment formatting updates.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-02-22 15:35:42 -05:00
Hans de Goede 4b3e603a29 ahci-platform: Add support for an optional regulator for sata-target power
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-02-22 15:35:42 -05:00
Hans de Goede 156c588794 ahci-platform: Add support for devices with more then 1 clock
The allwinner-sun4i AHCI controller needs 2 clocks to be enabled and the
imx AHCI controller needs 3 clocks to be enabled.

tj: Minor comment formatting updates.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-02-22 15:35:41 -05:00
Paul Gortmaker 1bc1808623 ata: delete non-required instances of include <linux/init.h>
None of these files are actually using any __init type directives
and hence don't need to include <linux/init.h>.  Most are just a
left over from __devinit and __cpuinit removal, or simply due to
code getting copied from one driver to the next.

Cc: linux-ide@vger.kernel.org
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2014-02-13 16:40:56 -05:00
Alistair Popple 2435dcb98c ahci: add support for IBM Akebono platform device
The new IBM Akebono board has a PPC476GTR SoC with an AHCI compliant
SATA controller. This patch adds a compatible property for the new SoC
to the AHCI platform driver.

Signed-off-by: Alistair Popple <alistair@popple.id.au>
Signed-off-by: Tejun Heo <tj@kernel.org>
Cc: stable@vger.kernel.org
2013-11-22 17:38:18 -05:00
Linus Torvalds 13aa7e0bc2 Merge branch 'for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata
Pull libata changes from Tejun Heo:
 "Nothing too interesting.  Only two minor fixes in libata core.  Most
  changes are specific to hardware which isn't too common"

* 'for-3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/tj/libata:
  ahci: Add Device IDs for Intel Wildcat Point-LP
  sata_rcar: Convert to clk_prepare/unprepare
  drivers/libata: Set max sector to 65535 for Slimtype DVD A DS8A9SH drive
  libata: Add some missing command descriptions
  sata_highbank: clear whole array in highbank_initialize_phys()
  ahci: disabled FBS prior to issuing software reset
  libata: Fix display of sata speed
  ahci: imx: setup power saving methods
  ata_piix: minor typo and a printk fix
  ahci: Changing two module params with static and __read_mostly
2013-11-13 15:18:22 +09:00
Richard Zhu 8b789d8981 ahci: imx: setup power saving methods
In order to save power consumption as much as possible.

* Disable sata phy internal pll reference clock when sysetem enter
  into suspend mode, enable it after resume.

* Setup module parameter used to enable imx ahci test power down
  mode(PDDQ) or not, when there is no device detected on the port

* minor modifications:
  - The format of the copyright is changed, because that the original
    one can't pass fsl internal patch reivew without the character
    '(c)'.
  - Exports ahci_platform_ops and ahci_error_handler().

NOTE:
* The hot-plug can't be supported when PDDQ mode is ever enabled.

* module parameter usage how-to:
  - default: enable PDDQ mode when no device detected.
  - add "ahci-imx.hotplug=1" into kernel command line if your don't
    want to enable PDDQ mode when no device detected on the port.

tj: Slightly updated description and comments.

Signed-off-by: Richard Zhu <r65037@freescale.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2013-10-15 08:47:00 -04:00
Jingoo Han 0fed4c09dc ahci_platform: use dev_info() instead of printk()
Change "raw" printk() call to dev_info() to provide a better
message to userspace so it can properly identify the device
and not just have to guess.

Signed-off-by: Jingoo Han <jg1.han@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2013-10-07 15:17:39 -04:00
Girish K S 1e8f5f761c ahci: sata: add support for exynos5440 sata
This patch adds the compatible string of the exynos5440 sata controller
compliant with the ahci 1.3 and sata 3.0 specification.

changes in v2:
		changed the compatible string by adding the actual IP
owners name instead of the SoC vendor name.

Signed-off-by: Girish K S <ks.giri@samsung.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
2013-06-17 11:23:05 -07:00
Greg Kroah-Hartman 0ec2491467 Drivers: ata: remove __dev* attributes.
CONFIG_HOTPLUG is going away as an option.  As a result, the __dev*
markings need to be removed.

This change removes the use of __devinit, __devexit_p, __devinitdata,
and __devexit from these drivers.

Based on patches originally written by Bill Pemberton, but redone by me
in order to handle some of the coding style issues better, by hand.

Cc: Bill Pemberton <wfp5p@virginia.edu>
Cc: Jeff Garzik <jgarzik@pobox.com>
Cc: Viresh Kumar <viresh.linux@gmail.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2013-01-03 15:57:03 -08:00
Brian Norris 071d3ad374 ahci_platform: make structs static
These structs are used only for ahci_platform.c, so they should be
static. Thanks to Fengguang for the (automated) suggestion.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Cc: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-12-14 09:38:17 -05:00
Brian Norris 83291d65cb ahci_platform: utilize common ata_platform_remove_one()
Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-12-03 05:15:19 -05:00
Brian Norris 1896b15edd ahci_platform: perform platform exit in host_stop() hook
AHCI platform devices may provide an exit() routine, via
ahci_platform_data, that powers off the SATA core. Such a routine should
be executed from the ata_port_operations host_stop() hook. That way, the
ATA subsystem can perform any last-minute hardware cleanup (via devres,
for example), then trigger the power-off at the appropriate time.

This patch fixes bus errors triggered during module removal or device
unbinding, seen on an SoC SATA core.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-12-03 05:15:15 -05:00
Brian Norris 9a99e4768a ahci_platform: convert to module_platform_driver
The ahci_platform driver can now use the module_platform_driver() macro.

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-12-03 05:14:31 -05:00
Brian Norris 941c77fd0f ahci_platform: enable hotplug unbinding
platform_driver_probe() should be used for registering this driver only
if we want to

    "...remove its run-once probe() infrastructure from memory after the
    driver has bound to the device."

However, we may want to leave the probe infrastructure in place in order
to support binding/unbinding a device dynamically. This is useful, for
instance, as a power management mechanism, where a device can be totally
powered down when unbound (whereas with runtime power management,
powering down the SATA core would incur unacceptable loss of
functionality).

Thus, convert this driver to use platform_driver_register().

Signed-off-by: Brian Norris <computersforpeace@gmail.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-12-03 05:14:07 -05:00
Yuanhan Liu 29448ec129 [libata] PM callbacks should be conditionally compiled on CONFIG_PM_SLEEP
This will fix warnings like following when CONFIG_PM_SLEEP is not set:

        warning: 'xxx_suspend' defined but not used [-Wunused-function]
        warning: 'xxx_resume' defined but not used [-Wunused-function]

Because
	SET_SYSTEM_SLEEP_PM_OPS(suspend_fn, resume_fn)

Only references the callbacks on CONFIG_PM_SLEEP (instead of CONFIG_PM).

Cc: Viresh Kumar <viresh.linux@gmail.com>
Cc: linux-ide@vger.kernel.org
Signed-off-by: Yuanhan Liu <yuanhan.liu@linux.intel.com>
Signed-off-by: Fengguang Wu <fengguang.wu@intel.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-11-16 00:45:37 -05:00
Viresh Kumar f1e70c2c53 ata/ahci_platform: Add clock framework support
On many architectures, drivers are supposed to prepare/unprepare &
enable/disable functional clock of device. This patch adds clock support for
ahci_platform.

Signed-off-by: Viresh Kumar <viresh.kumar@linaro.com>
Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
2012-09-13 01:10:18 -04:00