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2012-03-15spi/fsl-espi: Make sure pm is within 2..32Sebastian Andrzej Siewior1-4/+6
The reference manual says that pm has to stay within 2 and 32. So the lowest frequency is 32 and DIV16 set, the highest is 2 and DIV16 unset. Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-15spi/fsl-espi: make the clock computation easier to readSebastian Andrzej Siewior1-2/+2
The -1 +1 thingy should probably do what DIV_ROUND_UP does. The 4 is 2 the "platform_clock => sysclock" and 2 from the computation part. The 64 is the same 4 times 16. Signed-off-by: Sebastian Andrzej Siewior <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-15spi: sh-hspi: modify write/read methodKuninori Morimoto1-69/+24
Current sh-hspi had wrong write/read method which was not linux standard. If spi_transfer requests tx[2], rx[2] len=2, then, driver should run tx[0], rx[0], tx[1], rx[1]. But current sh-hspi runs tx[0], tx[1], rx[0], rx[1]. This patch fixes it up. Signed-off-by: Kuninori Morimoto <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-15spi: sh-hspi: control spi clock more correctlyKuninori Morimoto2-27/+70
Current sh-hspi had used platform-specific speed. This patch remove it, and use spi_transfer specific speed. It removes unnecessary flags from struct sh_hspi_info, but struct sh_hspi_info is still exist, since sh-hspi needs platform info in the future. Signed-off-by: Kuninori Morimoto <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-15spi: sh-hspi: convert to using core message queueKuninori Morimoto1-97/+55
Signed-off-by: Kuninori Morimoto <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-15spi: s3c64xx: Fix buildMark Brown1-1/+1
Commit 054ebc (spi: Compatibility with direction which is used in samsung DMA operation) does not build as one hunk adds a brace to the first branch of an if statement without adding at least the correspoding close. Remove the unwanted brace. Signed-off-by: Mark Brown <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-15spi: s3c64xx: remove unnecessary callback msg->completeKuninori Morimoto1-3/+0
msg->complete will be called in spi_finalize_current_message(). Signed-off-by: Kuninori Morimoto <[email protected]> Reviewed-by: Mark Brown <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-15spi: remove redundant variable assignmentGuennadi Liakhovetski1-2/+0
The status variable is guaranteed to be 0 at that location anyway. Signed-off-by: Guennadi Liakhovetski <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-10spi: release lock on error path in spi_pump_messages()Dan Carpenter1-0/+1
We should release the lock here and enable IRQs before returning. Signed-off-by: Dan Carpenter <[email protected]> [grant.likely: move unlock above dev_err() call] Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi: Compatibility with direction which is used in samsung DMA operationKyoungil Kim1-5/+5
I found that there are two kind of direction type. First one is dma_data_direction defined in include/linux/dma-direction.h. It is used for parameter of dma_map/unmap_single in spi-s3c64xx. The other one is dma_transter_direction defined in include/linux/dmaengine.h. It is used for direction of samsung DMA operation (arch/arm/plat-samsung/dma-ops.c). This patch is just some changes to use direction defines which is used in samsung DMA operation. Signed-off-by: Boojin Kim <[email protected]> Signed-off-by: Kyoungil Kim <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi-topcliff-pch: add recovery processing in case wait-event timeoutTomoya MORINAGA1-1/+9
Currently, pch_spi_start_transfer failure is not anticipated. This patch adds the processing. Signed-off-by: Tomoya MORINAGA <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi-topcliff-pch: supports a spi mode setup and bit order setup by IO controlTomoya MORINAGA1-0/+1
This patch supports a spi mode setup and bit order setup by IO control. spi mode: mode 0 to mode 3 bit order: LSB first, MSB first Signed-off-by: Tomoya MORINAGA <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi-topcliff-pch: Fix issue for transmitting over 4KByteTomoya MORINAGA1-11/+55
Currently, when spi-topcliff-pch receives transmit request over 4KByte, this driver can't process correctly. This driver needs to divide the data into 4Kbyte unit. This patch fixes the issue. Signed-off-by: Tomoya MORINAGA <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi-topcliff-pch: Modify pci-bus number dynamically to get DMA device infoTomoya MORINAGA1-1/+2
Signed-off-by: Tomoya MORINAGA <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi/imx: simplify error handling to free gpiosAxel Lin1-8/+3
Simplify the error handling by moving the code to free gpios in one place. Signed-off-by: Axel Lin <[email protected]> Acked-by: Shawn Guo <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi: Convert to DEFINE_PCI_DEVICE_TABLEAxel Lin3-3/+3
Convert static struct pci_device_id *[] to static DEFINE_PCI_DEVICE_TABLE tables. Signed-off-by: Axel Lin <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi: add Broadcom BCM63xx SPI controller driverFlorian Fainelli3-0/+493
This patch adds support for the SPI controller found on the Broadcom BCM63xx SoCs. Signed-off-by: Tanguy Bouzeloc <[email protected]> Signed-off-by: Florian Fainelli <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09SPI: add CSR SiRFprimaII SPI controller driverZhiwu Song3-0/+695
CSR SiRFprimaII has two SPIs (SPI0 and SPI1). Features: * Master and slave modes * 8-/12-/16-/32-bit data unit * 256 bytes receive data FIFO and 256 bytes transmit data FIFO * Multi-unit frame * Configurable SPI_EN (chip select pin) active state * Configurable SPI_CLK polarity * Configurable SPI_CLK phase * Configurable MSB/LSB first Signed-off-by: Zhiwu Song <[email protected]> Signed-off-by: Barry Song <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi-topcliff-pch: fix -Wuninitialized warningDanny Kukawka1-16/+17
Fix for: drivers/spi/spi-topcliff-pch.c: In function ‘pch_spi_handler_sub’: drivers/spi/spi-topcliff-pch.c:325:17: warning: ‘bpw_len’ may be used uninitialized in this function [-Wuninitialized] drivers/spi/spi-topcliff-pch.c:325:42: warning: ‘rx_index’ may be used uninitialized in this function [-Wuninitialized] drivers/spi/spi-topcliff-pch.c:325:42: warning: ‘tx_index’ may be used uninitialized in this function [-Wuninitialized] Move usage of tx_index, rx_index and bpw_len into the same block as where they are set to prevent uninitialized usage. v2: instead of init variables with 0 move the whole block Signed-off-by: Danny Kukawka <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi: Mark spi_register_board_info() __devinitMark Brown1-1/+1
Some systems have SPI devices located on plugin modules which are enumerated at runtime as devices. The drivers for these plugin modules need to register their SPI devices at probe() time so want to be able to call spi_register_board_info() but that function is currently marked as __init rather than __devinit so this usage isn't legal. Change the annotation to __devinit to handle this. Signed-off-by: Mark Brown <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi/s3c64xx: Convert to using core message queueMark Brown1-103/+22
Convert the s3c64xx driver to using the new message queue factored out of the pl022 driver by Linus Walleij, saving us a nice block of code and getting the benefits of improvements implemented in the core. Signed-off-by: Mark Brown <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi: controller drivers don't need to depend on SPI_MASTER explicitlyUwe Kleine-König1-6/+5
They are all defined in an if SPI_MASTER ... endif block. Signed-off-by: Uwe Kleine-König <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi/doc: spi_master_put must be followed up by kfreeUwe Kleine-König1-1/+2
Signed-off-by: Uwe Kleine-König <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi: Trivial warning fixShubhrajyoti D1-1/+1
The loop count i traverses for ntrans which is unsigned so make the loop count i also unsigned. Fix the below warning In file included from drivers/spi/spi-omap2-mcspi.c:38: include/linux/spi/spi.h: In function 'spi_message_alloc': include/linux/spi/spi.h:556: warning: comparison between signed and unsigned integer expressions Cc: Vitaly Wool <[email protected]> Signed-off-by: Shubhrajyoti D <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-09spi: Add SuperH HSPI prototype driverKuninori Morimoto4-0/+405
This patch adds SuperH HSPI driver. It is still prototype driver, but has enough function at this point. Signed-off-by: Kuninori Morimoto <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-07spi: create a message queueing infrastructureLinus Walleij4-264/+487
This rips the message queue in the PL022 driver out and pushes it into (optional) common infrastructure. Drivers that want to use the message pumping thread will need to define the new per-messags transfer methods and leave the deprecated transfer() method as NULL. Most of the design is described in the documentation changes that are included in this patch. Since there is a queue that need to be stopped when the system is suspending/resuming, two new calls are implemented for the device drivers to call in their suspend()/resume() functions: spi_master_suspend() and spi_master_resume(). ChangeLog v1->v2: - Remove Kconfig entry and do not make the queue support optional at all, instead be more agressive and have it as part of the compulsory infrastructure. - If the .transfer() method is implemented, delete print a small deprecation notice and do not start the transfer pump. - Fix a bitrotted comment. ChangeLog v2->v3: - Fix up a problematic sequence courtesy of Chris Blair. - Stop rather than destroy the queue on suspend() courtesy of Chris Blair. Signed-off-by: Chris Blair <[email protected]> Signed-off-by: Linus Walleij <[email protected]> Tested-by: Mark Brown <[email protected]> Reviewed-by: Mark Brown <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-07spi: add support for Renesas RSPIShimoda, Yoshihiro3-0/+528
The SH7757 has RSPI module. This patch supports it. Signed-off-by: Yoshihiro Shimoda <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-03-07spi/spi-sh: add IORESOURCE_MEM_TYPE_MASK decoding for access sizeShimoda, Yoshihiro1-2/+23
This SPI controller's access size is 32, or 8-bit. The previous driver supported 32-bit only. So, this patch adds IORESOURCE_MEM_TYPE_MASK decoding, an then, the driver can handle the SPI controller of 8-bit. Signed-off-by: Yoshihiro Shimoda <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-02-15spi/omap: Add DT support to McSPI driverBenoit Cousson2-8/+68
Add device tree support to the OMAP2+ McSPI driver. Add the bindings documentation. Based on original code from Rajendra. Signed-off-by: Benoit Cousson <[email protected]> Cc: Grant Likely <[email protected]> Cc: Rajendra Nayak <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-02-02spi/pl022: Add high priority message pump supportChris Blair2-25/+55
This switches the PL022 worker to a kthread in order to get hold of a mechanism to control the message pump priority. On low-latency systems elevating the message kthread to realtime priority give a real sleek response curve. This has been confirmed by measurements. Realtime priority elevation for a certain PL022 port can be requested from platform data. Cc: Mark Brown <[email protected]> Acked-by: Viresh Kumar <[email protected]> Signed-off-by: Chris Blair <[email protected]> Signed-off-by: Linus Walleij <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-02-01spi/nuc900: Remove unnecessary memset of struct nuc900_spiTobias Klauser1-2/+0
The memory allocated using kzalloc by spi_alloc_master so it doesn't need to be set to 0 again. Signed-off-by: Tobias Klauser <[email protected]> Signed-off-by: Grant Likely <[email protected]>
2012-01-30Merge branch 'spi/s3c64xx' of ↵Grant Likely1-11/+103
git://git.kernel.org/pub/scm/linux/kernel/git/broonie/misc Conflicts: drivers/spi/spi-s3c64xx.c
2012-01-21spi/s3c64xx: Implement runtime PM supportMark Brown1-0/+39
Enable and disable the clocks to the SPI controller using runtime PM. This serves the dual purpose of reducing power consumption a little and letting the core know when the device is idle. Signed-off-by: Mark Brown <[email protected]> Acked-by: Linus Walleij <[email protected]> Acked-by: Heiko Stuebner <[email protected]>
2012-01-21spi/s3c64xx: Convert to dev_pm_opsMark Brown1-9/+10
In preparation for the addition of runtime PM ops. Signed-off-by: Mark Brown <[email protected]>
2012-01-21spi/s3c64xx: Log error interruptsMark Brown1-2/+55
Although the hardware supports interrupts we're not currently using them at all since for small transfers the overhead is greater than that for busy waiting and for large transfers we have interrupts from the DMA. This means that if the hardware reports an error (especially one which might not stall transfer) we might miss it. Take a first pass at dealing with such errors by enabling the interrupt if we can and logging the errors if they happen. Ideally we'd report the error via the affected transfer but since we're in master mode it's very difficult to trigger errors at present and this code is much simpler. Signed-off-by: Mark Brown <[email protected]> Acked-by: Linus Walleij <[email protected]>
2012-01-19Linux 3.3-rc1Linus Torvalds1-2/+2
2012-01-19Merge branches 'sched-urgent-for-linus', 'perf-urgent-for-linus' and ↵Linus Torvalds9-104/+444
'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip * 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: sched/accounting, proc: Fix /proc/stat interrupts sum * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tracepoints/module: Fix disabling tracepoints with taint CRAP or OOT x86/kprobes: Add arch/x86/tools/insn_sanity to .gitignore x86/kprobes: Fix typo transferred from Intel manual * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86, syscall: Need __ARCH_WANT_SYS_IPC for 32 bits x86, tsc: Fix SMI induced variation in quick_pit_calibrate() x86, opcode: ANDN and Group 17 in x86-opcode-map.txt x86/kconfig: Move the ZONE_DMA entry under a menu x86/UV2: Add accounting for BAU strong nacks x86/UV2: Ack BAU interrupt earlier x86/UV2: Remove stale no-resources test for UV2 BAU x86/UV2: Work around BAU bug x86/UV2: Fix BAU destination timeout initialization x86/UV2: Fix new UV2 hardware by using native UV2 broadcast mode x86: Get rid of dubious one-bit signed bitfield
2012-01-19Merge tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6Linus Torvalds4-7/+8
gpio bug fixes for v3.3 * tag 'gpio-for-linus' of git://git.secretlab.ca/git/linux-2.6: gpio: tps65910: Use correct offset for gpio initialization gpio/it8761e: Restrict it8761e gpio driver to x86. gpio-ml-ioh: cleanup __iomem annotation usage gpio-ml-ioh: cleanup NULL pointer checking gpio-pch: cleanup __iomem annotation usage gpio-pch: cleanup NULL pointer checking
2012-01-19Merge branch 'for-linus' of ↵Linus Torvalds3-40/+27
git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/vfs: qnx4: don't leak ->BitMap on late failure exits qnx4: reduce the insane nesting in qnx4_checkroot() qnx4: di_fname is an array, for crying out loud... vfs: remove printk from set_nlink() wake up s_wait_unfrozen when ->freeze_fs fails
2012-01-19x86, syscall: Need __ARCH_WANT_SYS_IPC for 32 bitsH. Peter Anvin1-0/+1
In checkin 303395ac3bf3 x86: Generate system call tables and unistd_*.h from tables the feature macros in <asm/unistd.h> were unified between 32 and 64 bits. Unfortunately 32 bits requires __ARCH_WANT_SYS_IPC and this was inadvertently dropped. Reported-by: Dmitry Kasatkin <[email protected]> Cc: Linus Torvalds <[email protected]> Signed-off-by: H. Peter Anvin <[email protected]> Link: http://lkml.kernel.org/r/CALLzPKbeXN5gdngo8uYYU8mAow=XhrwBFBhKfG811f37BubQOg@mail.gmail.com
2012-01-19Merge remote-tracking branch 'linus/master' into x86/urgentH. Peter Anvin9587-258975/+463528
2012-01-19Merge branch 'for-linus' of ↵Linus Torvalds4-5/+8
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: KEYS: Permit key_serial() to be called with a const key pointer keys: fix user_defined key sparse messages ima: fix cred sparse warning MPILIB: Add a missing ENOMEM check
2012-01-19qnx4: don't leak ->BitMap on late failure exitsAl Viro1-1/+3
Signed-off-by: Al Viro <[email protected]>
2012-01-19qnx4: reduce the insane nesting in qnx4_checkroot()Al Viro1-34/+22
Signed-off-by: Al Viro <[email protected]>
2012-01-19qnx4: di_fname is an array, for crying out loud...Al Viro1-14/+12
(struct qnx4_inode_entry *)(bh->b_data + some_offset)->di_fname is not going to be NULL, TYVM... Signed-off-by: Al Viro <[email protected]>
2012-01-19KEYS: Permit key_serial() to be called with a const key pointerDavid Howells1-1/+1
Permit key_serial() to be called with a const key pointer. Signed-off-by: David Howells <[email protected]> Signed-off-by: James Morris <[email protected]>
2012-01-19keys: fix user_defined key sparse messagesMimi Zohar1-3/+3
Replace the rcu_assign_pointer() calls with rcu_assign_keypointer(). Signed-off-by: Mimi Zohar <[email protected]> Signed-off-by: David Howells <[email protected]> Signed-off-by: James Morris <[email protected]>
2012-01-19ima: fix cred sparse warningMimi Zohar1-1/+2
Fix ima_policy.c sparse "warning: dereference of noderef expression" message, by accessing cred->uid using current_cred(). Changelog v1: - Change __cred to just cred (based on David Howell's comment) Signed-off-by: Mimi Zohar <[email protected]> Signed-off-by: James Morris <[email protected]>
2012-01-18uml: fix compile for x86-64Linus Torvalds1-0/+5
Randy Dunlap reports that we get arch/x86/um/shared/sysdep/ptrace.h:7:20: error: redefinition of 'regs_return_value' arch/x86/um/shared/sysdep/ptrace.h:7:20: note: previous definition of 'regs_return_value' was here when compiling UML for x86-64. Stephen Rothwell root-caused it and says: "Caused by commit d7e7528bcd45 ("Audit: push audit success and retcode into arch ptrace.h") (another patch that was never in linux-next :-(). This file now needs protection against double inclusion." so let's do as the man says. Reported-by: Randy Dunlap <[email protected]> Analyzed-by: Stephen Rothwell <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
2012-01-19MPILIB: Add a missing ENOMEM checkDavid Howells1-0/+2
Add a missing ENOMEM check. Signed-off-by: David Howells <[email protected]> Acked-by: Mimi Zohar <[email protected]> Signed-off-by: James Morris <[email protected]>
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