From 69927fccd96b15bd228bb82d356a7a2a0cfaeefb Mon Sep 17 00:00:00 2001 From: AnilKumar Ch Date: Tue, 29 May 2012 11:13:16 +0530 Subject: can: c_can: Add support for Bosch D_CAN controller This patch adds the support for D_CAN controller driver to the existing C_CAN driver. Bosch D_CAN controller is a full-CAN implementation which is compliant to CAN protocol version 2.0 part A and B. Bosch D_CAN user manual can be obtained from: http://www.semiconductors.bosch.de/media/en/pdf/ ipmodules_1/can/d_can_users_manual_111.pdf A new array is added for accessing the d_can registers, according to d_can controller register space. Current D_CAN implementation has following limitations, this is done to avoid large changes to the C_CAN driver. 1. Message objects are limited to 32, 16 for RX and 16 for TX. C_CAN IP supports upto 32 message objects but in case of D_CAN we can configure upto 128 message objects. 2. Using two 16bit reads/writes for accessing the 32bit D_CAN registers. 3. These patches have been tested on little endian machine, there might be some hidden endian-related issues due to the nature of the accesses (32-bit registers accessed as 2 16-bit registers). However, I do not have a big-endian D_CAN implementation to confirm. Signed-off-by: AnilKumar Ch Signed-off-by: Marc Kleine-Budde --- drivers/net/can/c_can/Kconfig | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-) (limited to 'drivers/net/can/c_can/Kconfig') diff --git a/drivers/net/can/c_can/Kconfig b/drivers/net/can/c_can/Kconfig index ffb9773d102d..25d371cf98dd 100644 --- a/drivers/net/can/c_can/Kconfig +++ b/drivers/net/can/c_can/Kconfig @@ -1,15 +1,16 @@ menuconfig CAN_C_CAN - tristate "Bosch C_CAN devices" + tristate "Bosch C_CAN/D_CAN devices" depends on CAN_DEV && HAS_IOMEM if CAN_C_CAN config CAN_C_CAN_PLATFORM - tristate "Generic Platform Bus based C_CAN driver" + tristate "Generic Platform Bus based C_CAN/D_CAN driver" ---help--- - This driver adds support for the C_CAN chips connected to - the "platform bus" (Linux abstraction for directly to the + This driver adds support for the C_CAN/D_CAN chips connected + to the "platform bus" (Linux abstraction for directly to the processor attached devices) which can be found on various - boards from ST Microelectronics (http://www.st.com) - like the SPEAr1310 and SPEAr320 evaluation boards. + boards from ST Microelectronics (http://www.st.com) like the + SPEAr1310 and SPEAr320 evaluation boards & TI (www.ti.com) + boards like am335x, dm814x, dm813x and dm811x. endif -- cgit v1.2.3