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 <[email protected]>
Cc: David Brownell <[email protected]>
Cc: Benjamin Herrenschmidt <[email protected]>
Cc: Kumar Gala <[email protected]>
Cc: Grant Likely <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>

1 files changed, 3 insertions, 2 deletions

diff --git a/include/linux/fsl_devices.h b/include/linux/fsl_devices.h
index d9051d717d27..7bc1b643d370 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;
 };