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* Merge commit 'origin/master' into nextBenjamin Herrenschmidt2009-06-181-2/+2
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| * of_serial: remove driver_data direct access of struct deviceGreg Kroah-Hartman2009-06-151-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In the near future, the driver core is going to not allow direct access to the driver_data pointer in struct device. Instead, the functions dev_get_drvdata() and dev_set_drvdata() should be used. These functions have been around since the beginning, so are backwards compatible with all older kernel versions. Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Stephen Rothwell <sfr@canb.auug.org.au> Cc: Paul Mackerras <paulus@samba.org> Cc: Matthias Fuchs <mfuchs@ma-fu.de> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
* | of_serial: Add UPF_FIXED_TYPE flagDave Mitchell2009-06-161-1/+1
|/ | | | | | | | | | This patch adds the UPF_FIXED_TYPE flag which will bypass the 8250's autoconfig probe for uart type. The uart type identified by the of_serial's parse of the flat device tree will be utilized as defined. Signed-off-by: Dave Mitchell <dmitchell@amcc.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* serial: Add 16850 uart type support to OF uart driverMatthias Fuchs2009-01-161-0/+1
| | | | | | | | | | | This patch adds support for "ns16850" as supported value of the compatible node in flat device tree uart descriptions. This is needed for example when you have a XR16C2850 uart connected to a PPC405's external bus controller. Signed-off-by: Matthias Fuchs <mfuchs@ma-fu.de> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* serial: Add driver for the Cell Network Processor serial port NWP deviceBenjamin Krill2009-01-081-0/+19
| | | | | | | | | | | | | | | | | Add support for the nwp serial device which is connected to a DCR bus. It uses the of_serial device driver to determine necessary properties from the device tree. The supported device is added as serial port number 85. NWP stands for network processor and it is part of the QPACE - Quantum Chromodynamics Parallel Computing on the Cell Broadband Engine project. The implementation is a lightweight uart implementation with the focus to consume as little resources as possible and it is connected to a DCR bus. Signed-off-by: Benjamin Krill <ben@codiert.org> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* of_serial: Use linux/of_platform.h instead of asmStephen Rothwell2008-06-091-1/+1
| | | | | | Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Xilinx: of_serial support for Xilinx uart 16550.John Linn2008-04-241-1/+13
| | | | | | | | | | | | | | The Xilinx 16550 uart core is not a standard 16550 because it uses word-based addressing rather than byte-based addressing. With additional properties it is compatible with the open firmware 'ns16550' compatible binding. This code updates the of_serial driver to handle the reg-offset and reg-shift properties to enable this core to be used. Signed-off-by: John Linn <john.linn@xilinx.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
* [POWERPC] of_serial: Fix possible null dereference.Stephen Neuendorffer2008-04-021-1/+3
| | | | | | | | | | | | The of_serial driver queries the current-speed property and attempts to use it to register the custom_divisor property of the uart_port. However, if current-speed is not set, then this code will dereference a bad pointer. The fix is to only set custom_divisor when a current-speed property appears in the device tree. Signed-off-by: Stephen Neuendorffer <stephen.neuendorffer@xilinx.com> Signed-off-by: John Linn <john.linn@xilinx.com> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
* of_serial: fix section mismatch warningsJosh Boyer2008-03-101-1/+1
| | | | | | | | | | | | | | | Fix the following section mismatches: WARNING: drivers/built-in.o(.exit.text+0x5a): Section mismatch in reference from the function of_platform_serial_exit() to the variable .devinit.data:of_platform_serial_driver The function __exit of_platform_serial_exit() references a variable __devinitdata of_platform_serial_driver. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Arnd Bergmann <arnd@arndb.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* [POWERPC] of_serial: add port type checkingIshizaki Kou2007-07-101-3/+24
| | | | | | | | | | | Currently, of_serial driver supports only 8250 compatible ports, but prepares that others can easily be added. Yet unregister routine assumes port is 8250. This corrects unregister routine to check port type. Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] of_serial: Ignore unknown serial portIshizaki Kou2007-07-101-4/+2
| | | | | | | | | | Current of_serial driver assumes unknown serial port to be 8250. But this behavior may cause fatal problems when the serial port is not 8250. This corrects probe routine to ignore unknown serial port. Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
* Merge branch 'linux-2.6'Paul Mackerras2007-05-081-1/+2
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| * serial: define FIXED_PORT flag for serial_coreDavid Gibson2007-05-071-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | At present, the serial core always allows setserial in userspace to change the port address, irq and base clock of any serial port. That makes sense for legacy ISA ports, but not for (say) embedded ns16550 compatible serial ports at peculiar addresses. In these cases, the kernel code configuring the ports must know exactly where they are, and their clocking arrangements (which can be unusual on embedded boards). It doesn't make sense for userspace to change these settings. Therefore, this patch defines a UPF_FIXED_PORT flag for the uart_port structure. If this flag is set when the serial port is configured, any attempts to alter the port's type, io address, irq or base clock with setserial are ignored. In addition this patch uses the new flag for on-chip serial ports probed in arch/powerpc/kernel/legacy_serial.c, and for other hard-wired serial ports probed by drivers/serial/of_serial.c. Signed-off-by: David Gibson <dwg@au1.ibm.com> Cc: Russell King <rmk@arm.linux.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | [POWERPC] Rename get_property to of_get_property: driversStephen Rothwell2007-05-021-2/+2
|/ | | | | | | | These are all the remaining instances of get_property. Simple rename of get_property to of_get_property. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Open Firmware serial port driverArnd Bergmann2007-02-141-0/+143
This can be used for serial ports that are connected to an OF platform bus but are not autodetected by the lecacy serial support. It will automatically take over devices that come from the legacy serial detection, which usually is only one device. In some cases, rtas may be set up to use the serial port in the firmware, which allows easier debugging before probing the serial ports. In this case, the "used-by-rtas" property must be set by the firmware. This patch also adds code to the legacy serial driver to check for this. Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
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