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drivers: can: mcan: add CAN_MCAN_DT_MRBA() and CAN_MCAN_DT_INST_MRBA()

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Add CAN_MCAN_DT_MRBA() and CAN_MCAN_DT_INST_MRBA() macros for retrieving
the Bosch M_CAN Message RAM Base Address (MRBA) and clarify that the
existing CAN_MCAN_DT_MRAM_ADDR() and CAN_MCAN_DT_INST_MRAM_ADDR() macros do
not retrieve the base address, but rather the base address + the offset, if
any.

Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>
This commit is contained in:
Henrik Brix Andersen 2023-07-28 21:06:17 +02:00 • committed by Carles Cufí
commit 71a7afacbd
1 changed files with 24 additions and 4 deletions
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28
include/zephyr/drivers/can/can_mcan.h
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@ -573,13 +573,25 @@
* @brief Get the Bosch M_CAN Message RAM base address
*
* For devicetree nodes with dedicated Message RAM area defined via devicetree, this macro returns
* the base address of the Message RAM, taking in the Message RAM offset into account.
* the base address of the Message RAM.
*
* @param node_id node identifier
* @return the Bosch M_CAN Message RAM base address
* @return the Bosch M_CAN Message RAM base address (MRBA)
*/
#define CAN_MCAN_DT_MRBA(node_id) \
(mem_addr_t)DT_REG_ADDR_BY_NAME(node_id, message_ram)
/**
* @brief Get the Bosch M_CAN Message RAM address
*
* For devicetree nodes with dedicated Message RAM area defined via devicetree, this macro returns
* the address of the Message RAM, taking in the Message RAM offset into account.
*
* @param node_id node identifier
* @return the Bosch M_CAN Message RAM address
*/
#define CAN_MCAN_DT_MRAM_ADDR(node_id) \
(mem_addr_t)(DT_REG_ADDR_BY_NAME(node_id, message_ram) + CAN_MCAN_DT_MRAM_OFFSET(node_id))
(mem_addr_t)(CAN_MCAN_DT_MRBA(node_id) + CAN_MCAN_DT_MRAM_OFFSET(node_id))
/**
* @brief Get the Bosch M_CAN Message RAM size
@ -782,10 +794,18 @@
*/
#define CAN_MCAN_DT_INST_MCAN_ADDR(inst) CAN_MCAN_DT_MCAN_ADDR(DT_DRV_INST(inst))
/**
* @brief Equivalent to CAN_MCAN_DT_MRBA(DT_DRV_INST(inst))
* @param inst DT_DRV_COMPAT instance number
* @return the Bosch M_CAN Message RAM Base Address (MRBA)
* @see CAN_MCAN_DT_MRBA()
*/
#define CAN_MCAN_DT_INST_MRBA(inst) CAN_MCAN_DT_MRBA(DT_DRV_INST(inst))
/**
* @brief Equivalent to CAN_MCAN_DT_MRAM_ADDR(DT_DRV_INST(inst))
* @param inst DT_DRV_COMPAT instance number
* @return the Bosch M_CAN Message RAM base address
* @return the Bosch M_CAN Message RAM address
* @see CAN_MCAN_DT_MRAM_ADDR()
*/
#define CAN_MCAN_DT_INST_MRAM_ADDR(inst) CAN_MCAN_DT_MRAM_ADDR(DT_DRV_INST(inst))