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  1. 24 1月, 2018 6 次提交
  3. 23 1月, 2018 25 次提交
  5. 22 1月, 2018 9 次提交
    • D
      Merge branch 'mvpp2-Armada-7k-8k-PP2-ACPI-support' · d1b1110f
      由 David S. Miller 提交于 
      Marcin Wojtas says:

====================
Armada 7k/8k PP2 ACPI support

I quickly resend the series, thanks to Antoine Tenart's remark,
who spotted !CONFIG_ACPI compilation issue after introducing
the new fwnode_irq_get() routine. Please see the details in the changelog
below and the 3/7 commit log.

mvpp2 driver can work with the ACPI representation, as exposed
on a public branch:
https://github.com/MarvellEmbeddedProcessors/edk2-open-platform/commits/marvell-armada-wip
It was compiled together with the most recent Tianocore EDK2 revision.
Please refer to the firmware build instruction on MacchiatoBin board:
http://wiki.macchiatobin.net/tiki-index.php?page=Build+from+source+-+UEFI+EDK+II

ACPI representation of PP2 controllers (withouth PHY support) can
be viewed in the github:
* MacchiatoBin:
https://github.com/MarvellEmbeddedProcessors/edk2-open-platform/blob/71ae395da1661374b0f07d1602afb1eee56e9794/Platforms/Marvell/Armada/AcpiTables/Armada80x0McBin/Dsdt.asl#L201

* Armada 7040 DB:
https://github.com/MarvellEmbeddedProcessors/edk2-open-platform/blob/71ae395da1661374b0f07d1602afb1eee56e9794/Platforms/Marvell/Armada/AcpiTables/Armada70x0/Dsdt.asl#L131

I will appreciate any comments or remarks.

Best regards,
Marcin

Changelog:
v3 -> v4:
* 3/7
    - add new macro (ACPI_HANDLE_FWNODE) and fix
      compilation with !CONFIG_ACPI
    - extend commit log and mention usability of fwnode_irq_get
      for the child nodes as well

v2 -> v3:
* 1/7, 2/7
    - Add Rafael's Acked-by's
* 3/7, 4/7
    - New patches
* 6/7, 7/7
    - Update driver with new helper routines usage
    - Improve commit log.

v1 -> v2:
* Remove MDIO patches
* Use PP2 ports only with link interrupts
* Release second region resources in mvpp2 driver (code moved from
  mvmdio), as explained in details in 5/5 commit message.
====================
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      d1b1110f
    • M
      net: mvpp2: enable ACPI support in the driver · a75edc7c
      由 Marcin Wojtas 提交于 
      This patch introduces an alternative way of obtaining resources - via
ACPI tables provided by firmware. Enabling coexistence with the DT
support, in addition to the OF_*->device_*/fwnode_* API replacement,
required following steps to be taken:

* Add mvpp2_acpi_match table
* Omit clock configuration and obtain tclk from the property - in ACPI
  world, the firmware is responsible for clock maintenance.
* Disable comphy and syscon handling as they are not available for ACPI.
* Modify way of obtaining interrupts - use newly introduced
  fwnode_irq_get() routine
* Until proper MDIO bus and PHY handling with ACPI is established in the
  kernel, use only link interrupts feature in the driver. For the RGMII
  port it results in depending on GMAC settings done during firmware
  stage.
* When booting with ACPI MVPP2_QDIST_MULTI_MODE is picked by
  default, as there is no need to keep any kind of the backward
  compatibility.

Moreover, a memory region used by mvmdio driver is usually placed in
the middle of the address space of the PP2 network controller.
The MDIO base address is obtained without requesting memory region
(by devm_ioremap() call) in mvmdio.c, later overlapping resources are
requested by the network driver, which is responsible for avoiding
a concurrent access.

In case the MDIO memory region is declared in the ACPI, it can
already appear as 'in-use' in the OS. Because it is overlapped by second
region of the network controller, make sure it is released, before
requesting it again. The care is taken by mvpp2 driver to avoid
concurrent access to this memory region.
Signed-off-by: NMarcin Wojtas <mw@semihalf.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      a75edc7c
    • M
      net: mvpp2: use device_*/fwnode_* APIs instead of of_* · 24812221
      由 Marcin Wojtas 提交于 
      OF functions can be used only for the driver using DT.
As a preparation for introducing ACPI support in mvpp2
driver, use struct fwnode_handle in order to obtain
properties from the hardware description.

This patch replaces of_* function with device_*/fwnode_*
where possible in the mvpp2.
Signed-off-by: NMarcin Wojtas <mw@semihalf.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      24812221
    • M
      net: mvpp2: simplify maintaining enabled ports' list · bf147153
      由 Marcin Wojtas 提交于 
      'port_count' field of the mvpp2 structure holds an overall amount
of available ports, based on DT nodes status. In order to be prepared
to support other HW description, obtain the value by incrementing it
upon each successful port initialization. This allowed for simplifying
port indexing in the controller's private array, whose size is now not
dynamically allocated, but fixed to MVPP2_MAX_PORTS.

This patch simplifies creating and filling list of enabled ports and
is a part of the preparation for adding ACPI support in the mvpp2 driver.
Signed-off-by: NMarcin Wojtas <mw@semihalf.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      bf147153
    • M
      device property: Allow iterating over available child fwnodes · 3395de96
      由 Marcin Wojtas 提交于 
      Implement a new helper function fwnode_get_next_available_child_node(),
which enables obtaining next enabled child fwnode, which
works on a similar basis to OF's of_get_next_available_child().

This commit also introduces a macro, thanks to which it is
possible to iterate over the available fwnodes, using the
new function described above.
Signed-off-by: NMarcin Wojtas <mw@semihalf.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      3395de96
    • M
      device property: Introduce fwnode_irq_get() · 7c6c57f2
      由 Marcin Wojtas 提交于 
      Until now there were two very similar functions allowing
to get Linux IRQ number from ACPI handle (acpi_irq_get())
and OF node (of_irq_get()). The first one appeared to be used
only as a subroutine of platform_irq_get(), which (in the generic
code) limited IRQ obtaining from _CRS method only to nodes
associated to kernel's struct platform_device.

This patch introduces a new helper routine - fwnode_irq_get(),
which allows to get the IRQ number directly from the fwnode
to be used as common for OF/ACPI worlds. It is usable not
only for the parents fwnodes, but also for the child nodes
comprising their own _CRS methods with interrupts description.

In order to be able o satisfy compilation with !CONFIG_ACPI
and also simplify the new code, introduce a helper macro
(ACPI_HANDLE_FWNODE), with which it is possible to reach
an ACPI handle directly from its fwnode.
Signed-off-by: NMarcin Wojtas <mw@semihalf.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      7c6c57f2
    • M
      device property: Introduce fwnode_get_phy_mode() · b28f263b
      由 Marcin Wojtas 提交于 
      Until now there were two almost identical functions for
obtaining network PHY mode - of_get_phy_mode() and,
more generic, device_get_phy_mode(). However it is not uncommon,
that the network interface is represented as a child
of the actual controller, hence it is not associated
directly to any struct device, required by the latter
routine.

This commit allows for getting the PHY mode for
children nodes in the ACPI world by introducing a new function -
fwnode_get_phy_mode(). This commit also changes
device_get_phy_mode() routine to be its wrapper, in order
to prevent unnecessary duplication.
Signed-off-by: NMarcin Wojtas <mw@semihalf.com>
Acked-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      b28f263b
    • M
      device property: Introduce fwnode_get_mac_address() · babe2dbb
      由 Marcin Wojtas 提交于 
      Until now there were two almost identical functions for
obtaining MAC address - of_get_mac_address() and, more generic,
device_get_mac_address(). However it is not uncommon,
that the network interface is represented as a child
of the actual controller, hence it is not associated
directly to any struct device, required by the latter
routine.

This commit allows for getting the MAC address for
children nodes in the ACPI world by introducing a new function -
fwnode_get_mac_address(). This commit also changes
device_get_mac_address() routine to be its wrapper, in order
to prevent unnecessary duplication.
Signed-off-by: NMarcin Wojtas <mw@semihalf.com>
Acked-by: NRafael J. Wysocki <rafael.j.wysocki@intel.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      babe2dbb
    • C
      net: caif: remove redundant re-assignment of pointer pfrm · e0b4ed01
      由 Colin Ian King 提交于 
      The pointer pfrm is initialized and then later re-assigned the same
value and hence the second assignment is redundant and can be removed.

Cleans up clang warning:
drivers/net/caif/caif_hsi.c:222:6: warning: Value stored to 'pfrm'
during its initialization is never read
Signed-off-by: NColin Ian King <colin.king@canonical.com>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
      e0b4ed01