The new chip select handling via GPIO introduced a pointer computation bug:
(int *) pl022 + sizeof(struct pl022)
doesn't point to the data immediately after the actual struct pl022 (as was
intended) but to a multiple of bytes after it because of the (int *) type.
Replacing the kludgy poi
On Sun, Sep 2, 2012 at 3:12 PM, shiraz hashim
wrote:
> Hi Linus,
>> Yes that is why the allocation looks like this:
>>
>> + master = spi_alloc_master(dev, sizeof(struct pl022) + sizeof(int) *
>> + platform_info->num_chipselect);
>>
>
> The allocation is such
On Mon, Sep 3, 2012 at 10:14 AM, Roland Stigge wrote:
> The new chip select handling via GPIO introduced a pointer computation bug:
>
> (int *) pl022 + sizeof(struct pl022)
>
> doesn't point to the data immediately after the actual struct pl022 (as was
> intended) but to a multiple of byt
On Sun, Sep 2, 2012 at 10:17 PM, Daniel Mack wrote:
> On 05.08.2012 21:12, Linus Walleij wrote:
>> On Sun, Aug 5, 2012 at 1:57 PM, Daniel Mack wrote:
>>
Acked-by: Linus Walleij
>>>
>>> Ok, thanks. Mark, did the patches reach you this time? I think they
>>> should go thru the SPI tree.
>>
>>
Currently, spidev_test.c always sends hardcoded data to the device.
By fetching this data from a file given as a parameter, one can test
real devices.
Signed-off-by: Jan Luebbe
---
Documentation/spi/spidev_test.c | 73 +++
1 file changed, 58 insertions(+), 1
Currently in omap2_mcspi_txrx_dma has the rx and the rx support
interleaved. Make the rx related code in omap2_mcspi_rx_dma
and the tx related code omap2_mcspi_tx_dma and call functions.
While at it also remove the braces in the if statements which has only
one line.
Also fix ["foo * bar" to "foo
Currently in omap2_mcspi_txrx_dma the tx and the rx support is
interleaved. Make the rx related code in omap2_mcspi_rx_dma
and the tx related code omap2_mcspi_tx_dma and call the functions.
While at it remove the braces in the if statements which has only
one line.
Also fix ["foo * bar" to "foo *b
On Monday 03 September 2012 07:32 PM, Shubhrajyoti D wrote:
> Currently in omap2_mcspi_txrx_dma has the rx
I meant tx here will resend. please ignore this patch
> and the rx support
> interleaved. Make the rx related code in omap2_mcspi_rx_dma
> and the tx related code omap2_mcspi_tx_dma and call
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Actually, spi_master_put() after spi_alloc_master() must _not_ be followed
by kfree(). The memory is already freed with the call to spi_master_put()
through spi_master_class, which registers a release function. Calling both
spi_master_put() and kfree() results in often nasty (and delayed) crashes
e
Rework the mxs_ssp_timeout() function to make it a bit more readable
and hopefully less error prone. Also, have only one successful exit
from the function and one failing exit instead of two.
Finally, discard the udelay() from this function altogether, as this
tightloop is quick enough it's pointl
This driver checks the length of transfer to be made and based
on this information, either chooses to transfer data via DMA or
PIO. Decrement this border further to gain better performace eg.
during SPI flash writes.
Empiric measurement shows that this gives extra 3kB/s write speed
with a M25P80 f
I humbly present fixes for further issues found in the SPI driver
for i.MX23/i.MX28.
The first patch rectifies the handling of DMA chaining in the driver,
hopefully this time it's correct. Sadly, documentation on this matter
is missing.
The further patches are mostly code improvements, cleanups a
When doing long continuous transfer, eg. from SPI flash via /dev/mtd,
the driver dies. This is caused by a bug in the DMA chaining. Rework
the DMA transfer code so that this issue does not happen any longer.
This involves proper allocation of correct amount of sg-list members.
Also, this means pro
The transfer function incremented (struct spi_message)->actual_length
unconditionally, even if the transfer failed. Rectify this by incrementing
this only if transfer succeeded.
Signed-off-by: Marek Vasut
Cc: Chris Ball
Cc: Fabio Estevam
Cc: Grant Likely
Cc: Mark Brown
Cc: Shawn Guo
---
dri
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