linux-toradex.git/drivers/spi, branch v2.6.36

of/spi: Fix OF-style driver binding of spi devices

2010-10-03T03:28:29+00:00

This patch adds the OF hook to the spi core so that devices
can automatically be registered based on device tree data.  This fixes
a problem with spi devices not binding to drivers after the cleanup of
the spi & i2c binding code.

Signed-off-by: Sinan Akman 
Signed-off-by: Grant Likely

spi: spi-gpio.c tests SPI_MASTER_NO_RX bit twice, but not SPI_MASTER_NO_TX

2010-10-03T03:09:08+00:00

The SPI_MASTER_NO_TX bit (can't do buffer write) wasn't tested.  This
code was introduced in commit 3c8e1a84 (spi/spi-gpio: add support for
controllers without MISO or MOSI pin).  This patch fixes a bug in
choosing which transfer ops to use.

Signed-off-by: Roel Kluin 
Signed-off-by: Grant Likely

spi/mpc8xxx: fix buffer overrun on large transfers

2010-09-16T20:07:45+00:00

It fixes an issue when sending-only or receiving-only more than
PAGE_SIZE bytes.

Signed-off-by: christophe leroy 
Acked-by: Joakim Tjernlund 
Signed-off-by: Grant Likely

spi/pl022: move probe call to subsys_initcall()

2010-09-09T04:50:10+00:00

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: Linus Walleij 
Signed-off-by: Grant Likely

spi/pl022: fix APB pclk power regression on U300

2010-09-08T18:24:30+00:00

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: Linus Walleij 
Tested-by : Kevin Wells 
Signed-off-by: Grant Likely

spi/spi_s3c64xx: Warn if PIO transfers time out

2010-09-08T18:23:03+00:00

When using PIO we have a timeout for the TX and RX FIFOs to ensure that
the data actually gets transferred. Warn if we hit that timeout - it
should never happen, but this makes sure we'll find out if it does.

Signed-off-by: Mark Brown 
Acked-by: Jassi Brar 
Signed-off-by: Grant Likely

spi/s3c64xx: Fix incorrect reuse of 'val' local variable.

2010-09-08T18:05:02+00:00

Instead of, wrongly, reusing the 'val' variable, use a dedicated
one for reading the status register.

Signed-off-by: Jassi Brar 
Signed-off-by: Grant Likely

spi/s3c64xx: Fix compilation warning

2010-09-08T18:03:45+00:00

Fix compilation warning by typecasting the tx_buf pointer.

[I'm not thrilled with resorting to a cast; but I cannot see a better
way to go about this.  I don't want to drop the const from struct
spi_transfer ~~glikely]

Signed-off-by: Jassi Brar 
Signed-off-by: Grant Likely

spi/dw_spi: clean the cs_control code

2010-09-08T16:50:00+00:00

commit 052dc7c45i "spi/dw_spi: conditional transfer mode change"
introduced cs_control code, which has a bug by using bit offset
for spi mode to set transfer mode in control register. Also it
forces devices who don't need cs_control to re-configure the
control registers for each spi transfer. This patch will fix them

Signed-off-by: Feng Tang 
Signed-off-by: Grant Likely

spi/dw_spi: Allow interrupt sharing

2010-09-08T16:49:50+00:00

Allow interrupt sharing since exclusive interrupt line for
DW SPI controller is not provided on every platform.

Signed-off-by: Yong Wang 
Signed-off-by: Grant Likely