kernel.git/drivers/net/can/flexcan.c, branch linux-4.12.y

can: flexcan: fix typo in comment

2017-03-03T12:00:07Z

This patch fixes the typo "Disble" -> "Disable". Signed-off-by: Marc Kleine-Budde

can: flexcan: switch imx6 and vf610 to timestamp based offloading

2017-02-06T14:13:45Z

This patch switches the imx6 and vf610 based SoCs from the hardware FIFO to the timestamp based rx offloading. Signed-off-by: Marc Kleine-Budde

can: flexcan: add support for timestamp based rx-offload

2017-02-06T14:13:44Z

The flexcan IP core has 64 mailboxes. For now they are configured for RX as a hardware FIFO. This FIFO has a fixed depth of 6 CAN frames. In some high load scenarios it turns out thas this buffer is too small. In order to have a buffer larger than the 6 frames FIFO, this patch adds support for timestamp based offloading via the generic rx-offload infrastructure. Signed-off-by: Marc Kleine-Budde

can: flexcan: add quirk FLEXCAN_QUIRK_ENABLE_EACEN_RRS

2017-02-06T14:13:42Z

In order to receive RTR frames in the non HW FIFO mode the RSS and EACEN bits of the reg_ctrl2 have to be activated. As this has no side effect in the FIFO mode, we do this unconditionally on cores with the reg_ctrl2. Signed-off-by: Marc Kleine-Budde

can: flexcan: activate individual RX masking and initialize reg_rximr

2017-02-06T14:13:41Z

Modern flexcan IP cores support two RX modes. One is using the 6 fames deep hardware FIFO, the other is using up to 64 mailboxes (in non FIFO mode). For now only the HW FIFO mode is activated. In order to make use of the RX mailboxes the individual RX masking feature has to be activated, otherwise matching mailboxes are overwritten during the reception process. This however switches on the individual RX masking, which uses reg_rximr registers for masking. This patch activates the individual RX masking feature unconditionally and initializes the mask registers (reg_rximr) with 0x0 == "don't care", which switches off any filtering. Signed-off-by: Marc Kleine-Budde

can: flexcan: make use of rx-offload's irq_offload_fifo

2017-02-06T14:13:39Z

This patch converts the flexcan driver to make use of the rx-offload can_rx_offload_irq_offload_fifo() helper function. The idea is to read the CAN frames already in the interrupt context, as the depth of the flexcan HW FIFO is too shallow, resulting in too many missed frames. During a normal NAPI poll the frames are the pushed into the upper layers. Signed-off-by: Marc Kleine-Budde

can: flexcan: make TX mailbox selectable during runtime

2017-02-06T14:13:37Z

This patch makes the TX mailbox selectable duing runtime. This is a preparation patch to use of the hardware FIFO selectable via runtime. As the TX mailbox number is different in HW FIFO and normal mode. Signed-off-by: Marc Kleine-Budde

can: flexcan: calculate default value for imask1 during runtime

2017-02-06T14:13:36Z

This patch converts the define FLEXCAN_IFLAG_DEFAULT into the runtime calculated value priv->reg_imask1_default. This is a preparation patch to make the TX mailbox selectable during runtime, too. Signed-off-by: Marc Kleine-Budde

can: flexcan: flexcan_irq(): don't unconditionally return IRQ_HANDLED

2017-02-06T14:13:35Z

This patch changes the flexcan_irq() function to only return IRQ_HANDLED, if the interrupt really has been handled, otherwise IRQ_NONE is returned. Signed-off-by: Marc Kleine-Budde

can: flexcan: flexcan_poll_bus_err(): fold in do_bus_err()

2017-02-06T14:13:34Z

This patch folds in the do_bus_err() function into flexcan_poll_bus_err(). Signed-off-by: Marc Kleine-Budde