- drop own, obsolete include-file
- drop IRQF_SAMPLE_RANDOM (deprecated feature)
- drop 'if' above kfree()
- typos, braces & whitespaces
Signed-off-by: NWolfram Sang <w.sang@pengutronix.de>
Acked-by: NLuotao Fu <l.fu@pengutronix.de>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

This one enables the mpc52xx_spi driver for usage of user defined gpio lines
as chipselect. This way we can control some more spi devices than only one

V2 Changes:
* preinitialize the gpio as output in probe function and call gpio_set_value in
  the chip select function instead of calling direction_output every time.
* initialize the gpio line with output high, since we don't support CS_HIGH
  in the driver currently any way. change gpio value setting to default active
  low in chip select call.
* free the gpio array while error or removing.
Signed-off-by: NLuotao Fu <l.fu@pengutronix.de>
Acked-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

V2 changes:
* remove CS_HIGH mode
Signed-off-by: NLuotao Fu <l.fu@pengutronix.de>
Acked-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Before reading status register to check MODF failure, we have to clear it
first since the MODF flag will be set after initializing the spi master,
if the hardware comes up with a low SS. The processor datasheet reads:
Mode Fault flag -- bit sets if SS input goes low while SPI is configured as a
master. Flag is cleared automatically by an SPI status register read (with MODF
set) followed by a SPI control register 1 write.
Hence simply rereading the register is not sufficient to clear the flag. We
redo the write also to make sure to clear the flag.

V2 Changes:
* change variable type from int to u8
Signed-off-by: NLuotao Fu <l.fu@pengutronix.de>
Acked-by: NWolfram Sang <w.sang@pengutronix.de>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Adds support for the dedicated SPI device on the Freescale MPC5200(b)
SoC.
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>