- 02 8月, 2011 1 次提交
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由 Linus Walleij 提交于
The remove function in the PL022 driver cannot abort the remove function any way, so restructure the code so as not to make that assumption. Remove will now proceed no matter whether it can stop the transfer queue or not. Reported-by: NRussell King <linux@arm.linux.org.uk> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 16 6月, 2011 3 次提交
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由 Linus Walleij 提交于
The platform configuration can select custom FIFO watermarks, but these may conflict the actual FIFO size of the PL022 variant if set too high. So strengthen the sanity checks to deny any conflicting settings. Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Rabin Vincent 提交于
Insert notifiers for the runtime PM API. With this the runtime PM layer kicks in to action where used. Signed-off-by: NRabin Vincent <rabin.vincent@stericsson.com> Reviewed-by: NVirupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Reviewed-by: NJonas Aberg <jonas.aberg@stericsson.com> Reviewed-by: NSrinidhi Kasagar <srinidhi.kasagar@stericsson.com> [Rebased to Linux 3.0-rc3, edit description] Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Linus Walleij 提交于
Configure the DMA burstsize from the FIFO trigger level supplied with the controller configuration data. This is based on a patch from Virupax, but I rewrote it differently. Reported-by: NVirupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 06 6月, 2011 1 次提交
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由 Grant Likely 提交于
Sort the SPI makefile and enforce the naming convention spi_*.c for spi drivers. This change also rolls the contents of atmel_spi.h into the .c file since there is only one user of that particular include file. v2: - Use 'spi-' prefix instead of 'spi_' to match what seems to be be the predominant pattern for subsystem prefixes. - Clean up filenames in Kconfig and header comment blocks Signed-off-by: NGrant Likely <grant.likely@secretlab.ca> Acked-by: NWolfram Sang <w.sang@pengutronix.de> Acked-by: NLinus Walleij <linus.walleij@linaro.org>
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- 20 5月, 2011 3 次提交
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由 Viresh Kumar 提交于
If pl022_dma_probe fails, we can try to transfer data in polling or interrupt mode. Also, set platform_info->enable_dma to 0, so that no other code tries to use dma. Signed-off-by: NViresh Kumar <viresh.kumar@st.com> Acked-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Linus Walleij 提交于
This relaxes the cpu in the polling busy-wait loop. Reported-by: NVitaly Wool <vitalywool@gmail.com> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Magnus Templing 提交于
This adds the missing handling of polling timeouts and deletes our last todo. Signed-off-by: NMagnus Templing <magnus.templing@stericsson.com> Reviewed-by: NSrinidhi Kasagar <srinidhi.kasagar@stericsson.com> [Fixups from review by Wolfram Sang] Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 08 4月, 2011 1 次提交
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由 Vasily Khoruzhick 提交于
There's a race condition in stop_queue() in some drivers - if drv_data->queue is empty, but drv_data->busy is still set (or opposite situation) stop_queue will return -EBUSY. So fix loop condition to check that both drv_data->queue is empty and drv_data->busy is not set. This patch affects following drivers: pxa2xx_spi spi_bfin5xx amba-pl022 dw_spi Signed-off-by: NVasily Khoruzhick <anarsoul@gmail.com> Acked-by: NEric Miao <eric.y.miao@gmail.com> Acked-by: NMike Frysinger <vapier@gentoo.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 31 3月, 2011 1 次提交
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由 Lucas De Marchi 提交于
Fixes generated by 'codespell' and manually reviewed. Signed-off-by: NLucas De Marchi <lucas.demarchi@profusion.mobi>
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- 24 3月, 2011 1 次提交
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由 Philippe Langlais 提交于
Extend the vendor data with a loopback field, and add new amba-pl022 vendor data for the DB5500 pl023, as the pl023 on db8500 and db5500 vary. Signed-off-by: NPrajadevi H <prajadevi.h@stericsson.com> Signed-off-by: NPhilippe Langlais <philippe.langlais@linaro.org> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 24 2月, 2011 1 次提交
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由 Russell King 提交于
Make Primecell driver probe functions take a const pointer to their ID tables. Drivers should never modify their ID tables in their probe handler. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 23 2月, 2011 1 次提交
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由 Linus Walleij 提交于
Remove a compilation error regarding unused labels that came about when simplifying the DMA code. Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 16 2月, 2011 4 次提交
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由 Linus Walleij 提交于
Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Virupax Sadashivpetimath 提交于
Signed-off-by: NVirupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Linus Walleij 提交于
This utilizes the new core voltage switch to power off the PL022 core voltage when it's not in use transmitting packets, if and only if a core voltage switch is available. Cc: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Linus Walleij 提交于
This simplifies the DMA code a bit by using the dmaengine helpers. The cookie from descriptor submission can be ignored in this case as has been established in review of the MMCI/PL180 driver. Cc: Dan Williams <dan.j.williams@intel.com> Cc: Russell King <rmk+kernel@arm.linux.org.uk> Signed-off-by: NLinus Walleij <linus.walleij@linaro.org> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 15 1月, 2011 1 次提交
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由 Viresh Kumar 提交于
clk_freq is used uninitialized in pl022_setup routine. This patch fix compilation warning for using uninitialized variable Signed-off-by: NViresh Kumar <viresh.kumar@st.com> Acked-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 24 12月, 2010 4 次提交
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由 Linus Walleij 提交于
This variable is a bool but defined an int and defined completely backwards. This makes the code more readable. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Linus Walleij 提交于
Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Linus Walleij 提交于
The sglen return by the dma_map_sg() should be passed to the DMA engine, not the one passed in. If we one day have a DMA mapper that can coalesce entries, this will bug due to a too large number of entries being passed in. Reported-by: NRussell King <linux@arm.linux.org.uk> Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Linus Walleij 提交于
The struct device for the DMA engine is the apropriate one to use when mapping/unmapping buffers. This is because the memory which is addressable by DMA is determined by the DMA engine rather than the device. Reported-by: NRussell King <linux@arm.linux.org.uk> Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 15 11月, 2010 1 次提交
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由 Joe Perches 提交于
Signed-off-by: NJoe Perches <joe@perches.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 13 10月, 2010 4 次提交
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由 Linus Walleij 提交于
This removes some dubious allocation of a local chipinfo struct in favor of a constant preset, tagging that one const revealed further problems with platform data being modified so fixed up these too. Reported-by: NVirupax Sadashivpetimath <virupax.sadashivpetimath@stericsson.com> Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Linus Walleij 提交于
What is the dev pointer doing inside the platform data anyway. We have another pointer to the actual device at hand, use that. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Kevin Wells 提交于
This patch adds spi->mode support for the AMBA pl022 driver and allows spidev to correctly alter SPI modes. Unused fields used in the pl022 header file for the pl022_config_chip have been removed. The ab8500 client driver selects the data transfer size instead of the platform data. For platforms that use the amba pl022 driver, the unused fields in the controller data structure have been removed and the .mode field in the SPI board info structure is used instead. Signed-off-by: NKevin Wells <wellsk40@gmail.com> Tested-by: NLinus Walleij <linus.walleij@stericsson.com> Acked-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Linus Walleij 提交于
This extends the PL022 SSP/SPI driver with generic DMA engine support using the PrimeCell DMA engine interface. Also fix up the test code for the U300 platform. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 29 9月, 2010 1 次提交
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由 Julia Lawall 提交于
The return -EINVAL appears to only make sense if the if branch that it is aligned with is taken, and the indentation indicates that this is the authors intent, so move it into that branch. The semantic match that finds this problem is as follows: (http://coccinelle.lip6.fr/) // <smpl> @r disable braces4@ position p1,p2; statement S1,S2; @@ ( if (...) { ... } | if (...) S1@p1 S2@p2 ) @script:python@ p1 << r.p1; p2 << r.p2; @@ if (p1[0].column == p2[0].column): cocci.print_main("branch",p1) cocci.print_secs("after",p2) // </smpl> Signed-off-by: NJulia Lawall <julia@diku.dk> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 09 9月, 2010 2 次提交
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由 Linus Walleij 提交于
The PL022 SPI bus is sometimes used for early stuff like regulators that need to be present at module_init() time, so we move this to a subsys_initcall(). Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Linus Walleij 提交于
With the introduction of an AMBA PrimeCell per-cell block clock, the pclk was left on after probe() unless explicitly disabled. This clock is wired to the same clock on PL022 causing it to stay always on since. Fix this up properly by clocking the pclk whenever we want to write into any PL022 registers and clocking the external clock whenever we want to transmit messages on the bus. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Tested-by : Kevin Wells <wellsk40@gmail.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 01 8月, 2010 1 次提交
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由 Kevin Wells 提交于
Probe and remove hooks belong in the __devinit and __devexit sections respectively. This patch fixes incorrect annotations on the pl022 spi driver. Signed-off-by: NKevin Wells <wellsk40@gmail.com> Acked-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 25 5月, 2010 3 次提交
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由 Grzegorz Sygieda 提交于
This fix prevents queue being marked as "stopped", if data exists in the queue list. Signed-off-by: NGrzegorz Sygieda <grzegorz.sygieda@tieto.com> Signed-off-by: NLukasz Baj <lukasz.baj@tieto.com> Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Linus Walleij 提交于
This adds support for a further ST variant of the PL022 called PL023. Some differences in the control registers due to being stripped down to SPI mode only, and a new clock feedback sample delay config setting is available. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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由 Linus Walleij 提交于
The PL022 SPI driver did not cleanly separate between the original unmodified ARM version and the ST Microelectronics versions. Split this more cleanly and fix some whitespace moaning from checkpatch at the same time. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>
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- 30 3月, 2010 1 次提交
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由 Tejun Heo 提交于
include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: NTejun Heo <tj@kernel.org> Guess-its-ok-by: NChristoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
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- 28 1月, 2010 1 次提交
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由 Linus Walleij 提交于
Added logic to cap TX FIFO fill size based on current free RX FIFO entries instead of TX status flags. This is to prevent an issue with RX FIFO overflows. Signed-off-by: NKevin Wells <kevin.wells@nxp.com> Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 06 10月, 2009 1 次提交
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由 Srinidhi Kasagar 提交于
This fixes the wrong peripheral id being used in pl022 driver for ST derivative. Signed-off-by: Nsrinidhi kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 19 9月, 2009 1 次提交
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由 Linus Walleij 提交于
The definition of the SPI clock phase for the Motorola mode of the PL022 driver was incorrect: the spec had been interpreted as data being recieved on rising or falling edge of the clocks while the correct interpretation is that data can be recieved on the first or second edge transition, falling or rising depending on the polarity setting. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 11 7月, 2009 1 次提交
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由 Huang Weiyi 提交于
Remove duplicated #include('s) in drivers/spi/amba-pl022.c Signed-off-by: NHuang Weiyi <weiyi.huang@gmail.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 11 6月, 2009 1 次提交
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由 Linus Walleij 提交于
This adds a driver for the ARM PL022 PrimeCell SSP/SPI driver found in the U300 platforms as well as in some ARM reference hardware, and in a modified version on the Nomadik board. Reviewed-by: NAlessandro Rubini <rubini-list@gnudd.com> Reviewed-by: NRussell King <linux@arm.linux.org.uk> Reviewed-by: NBaruch Siach <baruch@tkos.co.il> Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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