linux-toradex.git/drivers/spi/orion_spi.c, branch v3.0.78

spi/orion: Drop unnecessary null test

2010-09-29T08:31:29+00:00

list_for_each_entry binds its first argument to a non-null value, and thus
any null test on the value of that argument is superfluous.

The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)

// 
@@
iterator I;
expression x,E;
@@

I(x,...) { <...
- (x != NULL) &&
  E
  ...> }
// 

Signed-off-by: Julia Lawall 
Signed-off-by: Grant Likely

spi: move more spi_setup() functionality into core

2009-06-18T20:03:42+00:00

Move some common spi_setup() error checks into the SPI framework from the
spi_master controller drivers:

 - Add a new "mode_bits" field to spi_master

 - Use that in spi_setup to validate the spi->mode value being
   requested.  Setting this new field is now mandatory for any
   controller supporting more than vanilla SPI_MODE_0.

 - Update all spi_master drivers to:

     * Initialize that field
     * Remove current spi_setup() checks using that value.

This is a net minor code shrink.

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

spi: move common spi_setup() functionality into core

2009-06-18T20:03:42+00:00

Start moving some spi_setup() functionality into the SPI core from the
various spi_master controller drivers:

 - Make that function stop being an inline;

 - Move two common idioms from drivers into that new function:
    * Default bits_per_word to 8 if that field isn't set
    * Issue a standardized dev_dbg() message

This is a net minor source code shrink, and supports enhancments found in
some follow-up patches.

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

spi: struct device - replace bus_id with dev_name(), dev_set_name()

2009-03-24T23:38:21+00:00

Cc: dbrownell@users.sourceforge.net
Cc: spi-devel-general@lists.sourceforge.net
Acked-by: Greg Kroah-Hartman 
Signed-off-by: Kay Sievers

orion_spi: handle 88F6183 erratum

2008-10-16T18:21:38+00:00

Add support to orion_spi for the 88F6183 ARM SoC by adding code to work
around a 6183-specific erratum.

Signed-off-by: Lennert Buytenhek 
Signed-off-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

orion_spi: fix handling of default transfer speed

2008-10-04T01:22:18+00:00

Accept zero (the default!) as a per-transfer clock speed override.

Signed-off-by: Lennert Buytenhek 
Signed-off-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

spi: new orion_spi driver

2008-08-05T21:33:46+00:00

This adds an SPI driver for the SPI controller found in various Marvell
Orion ARM SoCs.  It currently supports only one slave, which must use SPI
mode 0.

[dbrownell@users.sourceforge.net: cleanups, meet specs, pass "sparse"]
Signed-off-by: Shadi Ammouri 
Signed-off-by: Saeed Bishara 
Signed-off-by: Lennert Buytenhek 
Signed-off-by: David Brownell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds