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2012-03-26Merge branch 'sa11x0-mtd' into sa11x0Russell King1-112/+0
2012-03-26ARM: sa11x0: remove unused DMA controller definitionsRussell King2-218/+3
Remove the new unused DMA controller definitions from mach/SA-1100.h. These are now private to the SA-11x0 DMA engine driver and contained within the driver. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-26ARM: sa11x0: remove old SoC private DMA driverRussell King3-466/+1
Now that all users are converted over to using the DMA engine API, we can get rid of the old platform dependent DMA driver. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-26Merge branch 'sa11x0-ir' into sa11x0Russell King7-423/+1700
2012-03-26Merge branch 'sa1111' into sa11x0Russell King10-445/+459
Conflicts: arch/arm/common/sa1111.c arch/arm/mach-sa1100/neponset.c Fixed: arch/arm/mach-sa1100/assabet.c for the neponset changes
2012-03-24USB: sa1111: add hcd .reset methodRussell King1-9/+11
Add the .reset method to the HCD, and update the .start method accordingly for this change. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24USB: sa1111: add OHCI shutdown methodsRussell King1-0/+12
Add OHCI shutdown methods to cleanly shutdown the OHCI controller on system shutdowns and reboots. This avoids the controller continuing to run should be soft-reboot the platform, potentially scribbling over system memory. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24USB: sa1111: reorganize ohci-sa1111.cRussell King1-134/+93
Combine usb_hcd_sa1111_probe() and ohci_hcd_sa1111_drv_probe(), doing the same for the remove methods. Move sa1111_start_hc and sa1111_stop_hc to be located next to these the probe/release functions, as they're only called from them. Get rid of the /*----*/ breaker lines. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24USB: sa1111: get rid of nasty printk(KERN_DEBUG "%s: ...", __FILE__)Russell King1-4/+2
Use dev_dbg() instead, it's more friendly. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24USB: sa1111: sparse and checkpatch cleanupsRussell King1-16/+17
Clean up the ohci-sa1111 driver formatting to be more compliant with current standards, and add 'static' to various function definitions to avoid sparse complaints about undeclared functions. Remove the unnecessary local declaration of 'usb_disabled', which can be found instead in linux/usb.h. Acked-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: sa11x0: don't static map sa1111Russell King3-15/+0
The sa1111 support will ioremap() the device; there is no need for platforms to setup a static mapping for this. Remove the static mapping for this device from badge4, jornada720 and neponset. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: sa1111: use dev_err() rather than printk()Russell King1-1/+1
Use dev_err() to report device specific errors rather than printk(). Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: sa1111: cleanup sub-device registration and unregistrationRussell King1-11/+16
Move the releasing of resources out of the release function - this allows a cleaner and more conventional arrangement of the registration failure paths and a saner unregistration process for these devices. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: sa1111: only setup DMA for DMA capable devicesRussell King1-3/+6
It's pointless registering the PS/2 interfaces with the dmabounce code when there's no DMA support for these in hardware, so only setup the DMA masks for two subdevices which support DMA - the OHCI and SAC. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: sa1111: register sa1111 devices with dmabounce in bus notifierRussell King1-55/+74
Use the bus notifier to register sa1111 devices with dmabounce, rather than after the device has been registered, potentially racing with driver binding. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: sa1111: move USB interface register definitions to ohci-sa1111.cRussell King2-30/+25
Move the USB interface register definitions into the driver, rather than keeping them in a common place. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: sa1111: move PCMCIA interface register definitions to sa1111_generic.cRussell King2-48/+41
Move the PCMCIA interface register definitions into the driver, rather than keeping them in a common place. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: sa1111: move PS/2 interface register definitions to sa1111p2.cRussell King2-54/+37
Move the PS/2 interface register definitions into the driver, rather than keeping them in a common location. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: sa1111: delete unused physical GPIO register definitionsRussell King1-16/+0
Get rid of the unused GPIO register definitions - we access GPIO registers through the base + offset method, and having the phys address definitions is unnecessary duplication. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-24ARM: sa1111: provide a generic way to prevent devices from registeringRussell King6-5/+7
Some platforms don't want certain devices to be registered, because, eg, the interface is not wired. Provide a way for platforms to prevent various devices from being registered via a devid bitmask in the platform data. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-07NET: sa11x0-ir: add DMA support for SIR transmit modeRussell King1-44/+59
As the DMA engine API allows DMA channels to be reconfigured on the fly, we can now support switching the DMA channel configuration to support SIR transmit DMA without needing to claim an additional physical DMA channel - thereby using up half the DMA channels just for one driver. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-07NET: sa11x0-ir: convert sa11x0-ir driver to use DMA engine APIRussell King2-30/+92
Convert the sa11x0 IrDA driver to use the sa11x0 DMA engine driver rather than our own platform specific DMA API. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-07Merge branch 'sa11x0-dma' into sa11x0-irRussell King5-0/+1168
2012-03-07ARM: sa11x0: add SA-11x0 DMA deviceRussell King1-0/+25
Add sa11x0 DMA platform device and resources to the list of generic platform devices for SA11x0 machines. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-03-07DMA: sa11x0: add SA-11x0 DMA driverRussell King4-0/+1143
Add support for the SA-11x0 DMA driver, which replaces the private API version in arch/arm/mach-sa1100/dma.c. We model this as a set of virtual DMA channels, one for each request signal, and assign the virtual DMA channel to a physical DMA channel when there is work to be done. This allows DMA users to claim their channels, and hold them while not in use, without affecting the availability of the physical channels. Another advantage over this approach, compared to the private version, is that a channel can be reconfigured on the fly without having to release and re-request it - which for the IrDA driver, allows us to use DMA for SIR mode transmit without eating up three physical channels. As IrDA is half-duplex, we actually only need one physical channel, and this architecture allows us to achieve that. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: split si->dev for IrDA transmit and receive buffersRussell King1-7/+11
The sa11x0-ir device is not the device which is doing the DMA, the DMA is being performed by a separate DMA engine. Split the struct device associated with each DMA channel from the main struct device, but for the time being initialize it from the main struct device. This is another preparatory step to converting this driver to use the DMA engine API. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: fix size of SIR transmit bufferRussell King1-1/+1
The SIR transmit buffer was being allocated as 4000 bytes. IrDA now has constants for the buffer sizes, and defines the maximum wrapped SIR packet to be 4269 bytes as indicated by IRDA_SIR_MAX_FRAME. Use this definition to allocate the transmit buffer instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: convert to use scatterlist DMA APIRussell King1-21/+21
Convert the sa11x0 IrDA driver to use the scatterlist DMA API. This is a preparatory patch for converting the driver to use the DMA engine API, which requires a struct scatterlist for every transfer. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: get rid of si->hscr0Russell King1-8/+5
si->hscr0 is initialized to zero, and never changed. Get rid of this redundant variable. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: move sa1100_irda_txdma_irqRussell King1-55/+53
Move the FIR DMA transmit completion function along-side the other FIR protocol functions. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: move SIR and FIR interrupt supportRussell King1-149/+141
Move the interrupt handlers to the SIR and FIR sections of the file. This improves the localization of the protocol handlers. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: indirect handling of SIR and FIR interruptsRussell King1-26/+24
Use the same method for doing this as we do for the tx_start functions. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: split SIR and FIR tx functionsRussell King1-52/+66
Split the SIR and FIR transmit functions, as they behave differently. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: factor out speed checksRussell King1-12/+13
Whenever we complete a transmit, we always check for a speed change. This check was open coded in several places. Provide a helper function to do this instead. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: move sa1100_irda_{startup,shutdown,suspend,resume}Russell King1-131/+131
Places these functions in better locations in the file, near where they are used. This saves some tiresome paging up/down. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: fix leak of tx skbRussell King1-10/+19
Ensure that we unmap and free a pending transmit skb when the interface is stopped. We rearrange the code a little bit to give all places a similar layout when freeing the skb in both the completion and interface stop paths - this gives some consistency to the code. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: containerize DMA dataRussell King1-46/+48
Both the transmit and receive DMA store identical data: the skb, dma address, and the dma registers. Move this data into its own data structure. The following replacements were used: rxskb -> dma_rx.skb rxbuf_dma -> dma_rx.dma rxdma -> dma_rx.regs txskb -> dma_tx.skb txbuf_dma -> dma_tx.dma txdma -> dma_tx.regs Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: obtain interrupt number from platform resourcesRussell King1-3/+6
Convert the sa11x0-ir driver to obtain its interrupt number from the platform device resources, rather than via the asm/irq.h include. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: set netdev's parent struct deviceRussell King1-0/+2
Add the missing SET_NETDEV_DEV() call to set the parent device correctly for this network interface. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: handle DMA mapping errors properlyRussell King1-2/+14
Handle DMA mapping errors in the rx skb allocation and tx paths. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09NET: sa11x0-ir: fix documentation bugRussell King1-1/+1
Spell the module parameter correctly in comments. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09ARM: sa1111: change devid to be a bitmaskRussell King2-15/+17
Change the sa1111 device id to be a bitmask. This allows us to specify the actual device, while allowing a single driver to bind to both PS2 devices. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09ARM: sa11x0: badge4: move board specific ohci initialization to badge4.cRussell King2-14/+15
Move the handling of the 5v supply into badge4.c, removing this board specific detail from the sa1111 ohci driver. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09ARM: sa1111: add platform enable/disable functionsRussell King5-15/+51
Add platform hooks to be called when individual sa1111 devices are enabled and disabled. This will allow us to move some platform specifics out of the individual drivers. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09ARM: sa1111: add shutdown hook to sa1111_driver structureRussell King2-0/+10
Add a shutdown hook to the sa1111_driver structure to allow drivers to be notified of system reboots and shutdowns. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09ARM: sa1111: implement support for sparse IRQsRussell King1-11/+32
Implement the necessary allocation/freeing functionality to support sparse IRQs with the SA-1111 device. On non-sparse IRQ platforms, this allows us to dynamically allocate from within the available IRQ number space. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09ARM: sa1111: finish "allow cascaded IRQs to be used by platforms"Russell King1-4/+15
Commit 19851c58e680 (sa1111: allow cascaded IRQs to be used by platforms) moved the IRQ definitions to the .c file, and added an irq_base member to the private data structure. The inerrupt demultiplexer uses irq_base, but the interrupt setup code does not. Also, although the commit adds a private data structure to pass this data, it isn't even referenced, resulting in irq_base being zero. We also copied the IRQ numbers from the device info array into the actual devices, resulting in wrong interrupt numbers passed to the sub-devices. The net effect of this is that we always overwrite IRQs 0-54, even if they are allocated elsewhere in the system. Add the code necessary to setup the private irq_base, and use it in the IRQ setup code. Make the SA-1111 probe fail with -EINVAL if there is no platform data provided. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09ARM: sa1111: add .owner initializer to sa1111 driver structuresRussell King2-0/+2
Add a .owner initializer to the sa1111 driver structures to allow allow the modules to be associated with their driver structures. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09ARM: sa1111: add sa1111 core driver .owner initializerRussell King1-0/+1
Add an initializer for the struct device_driver .owner member. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2012-02-09ARM: sa1111: fix PWM state on suspendRussell King1-2/+3
We should not write to the SA1111 registers after setting the SLEEP bit. Moreover, the manual says that the PWM registers should be disabled before we enter sleep. So, move the clearing of these registers earlier in the suspend sequence. Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
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