kernel.git/drivers/net/can/m_can, branch linux-6.8.y

can: m_can: Start/Cancel polling timer together with interrupts

2024-03-26T22:16:43Z

[ Upstream commit a163c5761019b94258ca655b27b46e82657fd6f5 ] Interrupts are enabled/disabled in more places than just m_can_start() and m_can_stop(). Couple the polling timer with enabling/disabling of all interrupts to achieve equivalent behavior. Cc: Judith Mendez Fixes: b382380c0d2d ("can: m_can: Add hrtimer to generate software interrupt") Signed-off-by: Markus Schneider-Pargmann Reviewed-by: Simon Horman Link: https://lore.kernel.org/all/20240207093220.2681425-2-msp@baylibre.com Signed-off-by: Marc Kleine-Budde Signed-off-by: Sasha Levin

can: tcan4x5x: Fix id2_register for tcan4553

2023-10-06T10:54:33Z

Fix id2_register content for tcan4553. This slipped through my testing. Reported-by: Sean Anderson Closes: https://lore.kernel.org/lkml/a94e6fc8-4f08-7877-2ba0-29b9c2780136@seco.com/ Fixes: 142c6dc6d9d7 ("can: tcan4x5x: Add support for tcan4552/4553") Signed-off-by: Markus Schneider-Pargmann Reviewed-by: Simon Horman Link: https://lore.kernel.org/all/20230919095401.1312259-1-msp@baylibre.com Signed-off-by: Marc Kleine-Budde

can: tcan4x5x: Add error messages in probe

2023-07-31T08:41:09Z

To be able to understand issues during probe easier, add error messages if something fails. Signed-off-by: Markus Schneider-Pargmann Link: https://lore.kernel.org/all/20230728141923.162477-7-msp@baylibre.com Signed-off-by: Marc Kleine-Budde

can: tcan4x5x: Add support for tcan4552/4553

2023-07-31T08:41:08Z

tcan4552 and tcan4553 do not have wake or state pins, so they are currently not compatible with the generic driver. The generic driver uses tcan4x5x_disable_state() and tcan4x5x_disable_wake() if the gpios are not defined. These functions use register bits that are not available in tcan4552/4553. This patch adds support by introducing version information to reflect if the chip has wake and state pins. Also the version is now checked. Signed-off-by: Markus Schneider-Pargmann Link: https://lore.kernel.org/all/20230728141923.162477-6-msp@baylibre.com Signed-off-by: Marc Kleine-Budde

can: tcan4x5x: Rename ID registers to match datasheet

2023-07-31T08:41:08Z

The datasheet calls these registers ID1 and ID2. Rename these to avoid confusion. Signed-off-by: Markus Schneider-Pargmann Reviewed-by: Michal Kubiak Link: https://lore.kernel.org/all/20230728141923.162477-5-msp@baylibre.com Signed-off-by: Marc Kleine-Budde

can: tcan4x5x: Check size of mram configuration

2023-07-31T08:41:08Z

To reduce debugging effort in case the mram is misconfigured, add this size check of the DT configuration. Currently if the mram configuration doesn't fit into the available MRAM it just overwrites other areas of the MRAM. Signed-off-by: Markus Schneider-Pargmann Reviewed-by: Michal Kubiak Link: https://lore.kernel.org/all/20230728141923.162477-4-msp@baylibre.com Signed-off-by: Marc Kleine-Budde

can: tcan4x5x: Remove reserved register 0x814 from writable table

2023-07-31T08:41:08Z

The mentioned register is not writable. It is reserved and should not be written. Fixes: 39dbb21b6a29 ("can: tcan4x5x: Specify separate read/write ranges") Signed-off-by: Markus Schneider-Pargmann Reviewed-by: Michal Kubiak Link: https://lore.kernel.org/all/20230728141923.162477-3-msp@baylibre.com Signed-off-by: Marc Kleine-Budde

can: rx-offload: rename rx_offload_get_echo_skb() -> can_rx_offload_get_echo_skb_queue_timestamp()

2023-07-28T07:45:24Z

Rename the rx_offload_get_echo_skb() function to can_rx_offload_get_echo_skb_queue_timestamp(), since it inserts the echo skb into the rx-offload queue sorted by timestamp. This is a preparation for adding can_rx_offload_get_echo_skb_queue_tail(), which adds the echo skb to the end of the queue. This is intended for devices that do not support timestamps. Link: https://lore.kernel.org/all/20230718-gs_usb-rx-offload-v2-1-716e542d14d5@pengutronix.de Signed-off-by: Marc Kleine-Budde

can: Explicitly include correct DT includes, part 2

2023-07-28T06:49:52Z

The DT of_device.h and of_platform.h date back to the separate of_platform_bus_type before it as merged into the regular platform bus. As part of that merge prepping Arm DT support 13 years ago, they "temporarily" include each other. They also include platform_device.h and of.h. As a result, there's a pretty much random mix of those include files used throughout the tree. In order to detangle these headers and replace the implicit includes with struct declarations, users need to explicitly include the correct includes. Signed-off-by: Rob Herring Link: https://lore.kernel.org/all/20230724211841.805053-1-robh@kernel.org Signed-off-by: Marc Kleine-Budde

can: m_can: Add hrtimer to generate software interrupt

2023-07-17T14:02:24Z

Introduce timer polling method to MCAN since some SoCs may not have M_CAN interrupt routed to A53 Linux and do not have interrupt property in device tree M_CAN node. On AM62x SoC, MCANs on MCU domain do not have hardware interrupt routed to A53 Linux, instead they will use timer polling method. Add an hrtimer to MCAN class device. Each MCAN will have its own hrtimer instantiated if there is no hardware interrupt found in device tree M_CAN node. The timer will generate a software interrupt every 1 ms. In hrtimer callback, we check if there is a transaction pending by reading a register, then process by calling the isr if there is. Tested-by: Hiago De Franco # Toradex Verdin AM62 Reviewed-by: Tony Lindgren Signed-off-by: Judith Mendez Link: https://lore.kernel.org/all/20230707204714.62964-3-jm@ti.com Signed-off-by: Marc Kleine-Budde