linux-toradex.git/drivers/spi, branch v2.6.25.14

mpc52xx_psc_spi: fix block transfer

2008-08-01T18:50:54+00:00

commit 9a7867e1b34c3575e7e76a05c0c54c6edbdae2a4 upstream

The block transfer routine in the mpc52xx psc spi driver misinterpret
the datasheet.  According to the processor datasheet the chipselect is
held as long as the EOF is not written.

Theoretically blocks of any sizes can be transferred in this way.  The
old routine however writes an EOF after every word, which has the size
of size_of_word.  This makes the transfer slow.

Also fixed some duplicate code.

Signed-off-by: Luotao Fu 
Signed-off-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds 
Signed-off-by: Greg Kroah-Hartman

spi: spi_s3c24xx must initialize num_chipselect

2008-04-16T02:35:41+00:00

The SPI core now expects num_chipselect to be set correctly as due to added
checks on the chip being selected before an transfer is allowed.  This patch
adds a num_cs field to the platform data which needs to be set correctly
before adding the SPI platform device.

Signed-off-by: Ben Dooks 
Signed-off-by: David Brownell 
Cc: Russell King 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

spi: spi_s3c24xx must initialize bus_num

2008-04-16T02:35:41+00:00

Pass the bus number we expect the S3C24XX SPI driver to attach to via the
platform data.

Signed-off-by: Ben Dooks 
Signed-off-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

spi: spi_s3c24xx driver must init completion

2008-04-16T02:35:41+00:00

The s3c24xx_spi_txrx() function should initialise the completion each time
before using it, otherwise we end up with the possibility of returning success
before the interrupt handler has processed all the data.

Signed-off-by: Ben Dooks 
Signed-off-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

spi: fix platform driver hotplug/coldplug

2008-04-11T15:06:43+00:00

Since 43cc71eed1250755986da4c0f9898f9a635cb3bf, the platform modalias is
prefixed with "platform:".  Add MODULE_ALIAS() to the hotpluggable SPI
platform drivers, to allow module auto loading.

[dbrownell@users.sourceforge.net: more drivers: registration fixes]
Signed-off-by: Kay Sievers 
Signed-off-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

spi: spi_bfin5xx: remove unused label

2008-04-09T01:25:53+00:00

Remove unused label, and associated compiler warning.

Signed-off-by: Michael Hennerich 
Signed-off-by: Bryan Wu 
Signed-off-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

spi: spi_bfin5xx: fix probe() sequencing

2008-04-09T01:25:53+00:00

Fix bug in SPI probe: first initialize peripheral pins, and just after
register spi master device.  This fixes problems with SPI drivers built-in
kernel.

Singed-off-by: Vitja Makarov 
Signed-off-by: Bryan Wu 
Signed-off-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

spi: spi_bfin5xx build fix

2008-04-09T01:25:53+00:00

Fix breakage cause by overzealous line wrapping; there should be only one
format string.

Signed-off-by: Mike Frysinger 
Signed-off-by: Bryan Wu 
Signed-off-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

spi_bitbang: short transfer status fix

2008-03-13T20:11:43+00:00

SPI controller drivers return number of bytes actually transfered from
bitbang->txrx_bufs() method.  This updates handling of short transfers (where
the transfer size is less than requested):

 - Even zero byte short transfers should report errors;
 - Include short transfers in the total of transferred bytes;
 - Use EREMOTEIO (like USB) not EMSGSIZE to report short transfers

Short transfers don't normally mean invalid message sizes, but if the
underlying controller driver needs to use EMSGSIZE it can still do so.

[db: fix two more minor issues]
Signed-off-by: Jan Nikitenko 
Signed-off-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

au1550_spi: fix prototype of irq handler

2008-03-13T20:11:43+00:00

Remove struct pt_regs *regs from prototype of au1550_spi_irq handler to avoid
warning in request_irq().  Also fix comment type leadin.

Signed-off-by: Jan Nikitenko 
Signed-off-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds