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| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2021-10-11 22:37:34 +0200 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2022-02-24 08:47:00 +0100 |
| commit | aada74220f0076a2f76392806224ca385fae536a (patch) | |
| tree | 02bf30bcb33ef646e6f7b57e1e8a7a30675451d4 /drivers/net/can/spi | |
| parent | 887e359d6cce1c143d0ac39208538492d5d42191 (diff) | |
| download | lwn-aada74220f0076a2f76392806224ca385fae536a.tar.gz lwn-aada74220f0076a2f76392806224ca385fae536a.zip | |
can: mcp251xfd: mcp251xfd_priv: introduce macros specifying the number of supported TEF/RX/TX rings
This patch introduces macros to define the number of supported TEF, RX
and TX rings. As well as some assertions as sanity checks.
Link: https://lore.kernel.org/all/20220217103826.2299157-9-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can/spi')
| -rw-r--r-- | drivers/net/can/spi/mcp251xfd/mcp251xfd.h | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd.h b/drivers/net/can/spi/mcp251xfd/mcp251xfd.h index f359dd0aa458..87cc13d455c1 100644 --- a/drivers/net/can/spi/mcp251xfd/mcp251xfd.h +++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd.h @@ -2,7 +2,7 @@ * * mcp251xfd - Microchip MCP251xFD Family CAN controller driver * - * Copyright (c) 2019, 2020 Pengutronix, + * Copyright (c) 2019, 2020, 2021 Pengutronix, * Marc Kleine-Budde <kernel@pengutronix.de> * Copyright (c) 2019 Martin Sperl <kernel@martin.sperl.org> */ @@ -410,6 +410,15 @@ static_assert(MCP251XFD_TIMESTAMP_WORK_DELAY_SEC < #define MCP251XFD_SANITIZE_SPI 1 #define MCP251XFD_SANITIZE_CAN 1 +/* FIFO and Ring */ +#define MCP251XFD_FIFO_TEF_NUM 1U +#define MCP251XFD_FIFO_RX_NUM_MAX 1U +#define MCP251XFD_FIFO_TX_NUM 1U + +static_assert(MCP251XFD_FIFO_TEF_NUM == 1U); +static_assert(MCP251XFD_FIFO_TEF_NUM == MCP251XFD_FIFO_TX_NUM); +static_assert(MCP251XFD_FIFO_RX_NUM_MAX <= 4U); + /* Silence TX MAB overflow warnings */ #define MCP251XFD_QUIRK_MAB_NO_WARN BIT(0) /* Use CRC to access registers */ @@ -596,9 +605,9 @@ struct mcp251xfd_priv { u32 spi_max_speed_hz_fast; u32 spi_max_speed_hz_slow; - struct mcp251xfd_tef_ring tef[1]; - struct mcp251xfd_rx_ring *rx[1]; - struct mcp251xfd_tx_ring tx[1]; + struct mcp251xfd_tef_ring tef[MCP251XFD_FIFO_TEF_NUM]; + struct mcp251xfd_rx_ring *rx[MCP251XFD_FIFO_RX_NUM_MAX]; + struct mcp251xfd_tx_ring tx[MCP251XFD_FIFO_TX_NUM]; u8 rx_ring_num; |