spi_mpc83xx: rework chip selects handling

The main purpose of this patch is to pass 'struct spi_device' to the chip
select handling routines.  This is needed so that we could implement
full-fledged OpenFirmware support for this driver.

While at it, also:
- Replace two {de,activate}_cs routines by single cs_contol().
- Don't duplicate platform data callbacks in mpc83xx_spi struct.

Signed-off-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Cc: David Brownell <david-b@pacbell.net>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Kumar Gala <galak@gate.crashing.org>
Cc: Grant Likely <grant.likely@secretlab.ca>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 2 deletions

diff --git a/include/linux/fsl_devices.h b/include/linux/fsl_devices.h
index d9051d717d2..7bc1b643d37 100644
--- a/include/linux/fsl_devices.h
+++ b/include/linux/fsl_devices.h
@@ -95,14 +95,15 @@ struct fsl_usb2_platform_data {
 #define FSL_USB2_PORT0_ENABLED  0x00000001
 #define FSL_USB2_PORT1_ENABLED  0x00000002
 
+struct spi_device;
+
 struct fsl_spi_platform_data {
         u32     initial_spmode; /* initial SPMODE value */
         u16     bus_num;
         bool    qe_mode;
         /* board specific information */
         u16     max_chipselect;
-        void    (*activate_cs)(u8 cs, u8 polarity);
-        void    (*deactivate_cs)(u8 cs, u8 polarity);
+        void    (*cs_control)(struct spi_device *spi, bool on);
         u32     sysclk;
 };