From c9bfcb3151040cff6714542d1da04ccd7e2d3efc Mon Sep 17 00:00:00 2001 From: Joakim Tjernlund Date: Mon, 12 May 2008 14:02:30 -0700 Subject: spi_mpc83xx: much improved driver The current driver may cause glitches on SPI CLK line since one must disable the SPI controller before changing any HW settings. Fix this by implementing a local spi_transfer function that won't change speed and/or word size while CS is active. While doing that heavy lifting a few other issues were addressed too: - Make word size 16 and 32 work too. - Honor bits_per_word and speed_hz in spi transaction. - Optimize the common path. This also stops using the "bitbang" framework (except for a few constants). [Roel Kluin <12o3l@tiscali.nl>: "irq" needs to be signed] Signed-off-by: Joakim Tjernlund Signed-off-by: David Brownell Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- drivers/spi/Kconfig | 1 - 1 file changed, 1 deletion(-) (limited to 'drivers/spi/Kconfig') diff --git a/drivers/spi/Kconfig b/drivers/spi/Kconfig index fae9e8f3d092..66ec5d8808de 100644 --- a/drivers/spi/Kconfig +++ b/drivers/spi/Kconfig @@ -126,7 +126,6 @@ config SPI_MPC52xx_PSC config SPI_MPC83xx tristate "Freescale MPC83xx/QUICC Engine SPI controller" depends on SPI_MASTER && (PPC_83xx || QUICC_ENGINE) && EXPERIMENTAL - select SPI_BITBANG help This enables using the Freescale MPC83xx and QUICC Engine SPI controllers in master mode. -- cgit v1.2.3