Convert the code to allow per-device probe() like other device drivers.
This also delays driver registration due to change from subsys_initcall()
to regular module_platform_driver().
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
The bridge logic at slot 0 only supports reads up to 0x40 and the rest of
the PCI configuration space for this slot is marked as reserved in the
manual.
Trying a read from offset 0x100 is producing an error from the bridge. With
error interrupts enabled, the following is printed:
pci-rcar-gen2 ee0d0000.pci: error irq: status 00000014
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
Add option to enable interrupts to report any errors from the AHB-PCI
bridge to help find any issues with the bridge when in use.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
The current code does not check the return from platform_get_irq() so add
an error check and return if this call does fail.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Signed-off-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Acked-by: Simon Horman <horms+renesas@verge.net.au>
If runtime PM is enabled in the kernel config, the PCI clocks are not
forced on at start-up, and thus, are never enabled. Use
pm_runtime_get_sync() to enable the clocks.
While at it, use dev_info() instead of pr_info() since now we have the
device pointer available in the PCI setup callback.
Signed-off-by: Valentine Barshak <valentine.barshak@cogentembedded.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
In case of error, the function devm_ioremap_resource() returns ERR_PTR()
and never returns NULL. The NULL test in the return value check should
be replaced with IS_ERR().
Signed-off-by: Wei Yongjun <yongjun_wei@trendmicro.com.cn>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
Reviewed-by: Jingoo Han <jg1.han@samsung.com>
This adds internal PCI controller driver for R-Car Gen2 SoC. There are
three PCI controllers available with only a single EHCI/OHCI device
built-in on each PCI bus. This gives us three USB channels. Channel 0 is
shared with the USBHS device, while channel 2 is shared with the USBSS.
The PCI controllers do not support I/O port space mapping, and it is not
needed here.
Signed-off-by: Valentine Barshak <valentine.barshak@cogentembedded.com>
Signed-off-by: Bjorn Helgaas <bhelgaas@google.com>
