forked from Minki/linux
b03cfc5bb0
This patch adapts the initialization of the M_CAN. So it can be used with all versions >= 3.0.x. Changes: * Added version element to m_can_priv structure to hold M_CAN version. * Renamed bittiming structs for version 3.0.x * Added new bittiming structs for version >= 3.1.x * Function alloc_m_can_dev takes 2 new arguments. The TX FIFO size and the base address of the module. * Chip configuration for CAN_CTRLMODE_LOOPBACK is changed: Enabled CCCR_MON bit. In combination with TEST_LBCK it activates the internal loopback mode. Leaving CCCR_MON '0' results in external loopback mode. * Clocks are temporarily enabled by platform_propbe function in order to allow read access to the Core Release register and the Control Register. Registers are used to detect M_CAN version and optional Non-ISO Feature. Initialization of M_CAN for version >= 3.1.x: * TX FIFO of M_CAN is used to transmit frames. The driver does not need to stop the tx queue after each frame sent. * Initialization of TX Event FIFO is added. * NON-ISO is fixed for all M_CAN versions < 3.2.x. Version 3.2.x _can_ have the NISO (Non-ISO) bit which can switch the mode of the M_CAN to Non-ISO mode. This bit does not have to be writeable. Therefore it is checked. If it is writable Non-ISO support is added to the controllers supported CAN modes. New Functions: * Function to check the Core Release version. The read value determines the behaviour of the driver. * Function to check if the NISO bit for version >= 3.2.x is implemented. Signed-off-by: Mario Huettel <mario.huettel@gmx.net> Reviewed-by: Oliver Hartkopp <socketcan@hartkopp.net> Tested-by: Quentin Schulz <quentin.schulz@free-electrons.com> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de> |
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| .. | ||
| c_can | ||
| cc770 | ||
| ifi_canfd | ||
| m_can | ||
| mscan | ||
| peak_canfd | ||
| rcar | ||
| sja1000 | ||
| softing | ||
| spi | ||
| usb | ||
| at91_can.c | ||
| bfin_can.c | ||
| dev.c | ||
| flexcan.c | ||
| grcan.c | ||
| janz-ican3.c | ||
| Kconfig | ||
| led.c | ||
| Makefile | ||
| pch_can.c | ||
| rx-offload.c | ||
| slcan.c | ||
| sun4i_can.c | ||
| ti_hecc.c | ||
| vcan.c | ||
| xilinx_can.c | ||