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can: mcp251xfd: mcp251xfd_priv: introduce macros specifying the number of supported TEF/RX/TX rings

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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>
This commit is contained in:
Marc Kleine-Budde 2021-10-11 22:37:34 +02:00
parent 887e359d6c
commit aada74220f
1 changed files with 13 additions and 4 deletions
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17
drivers/net/can/spi/mcp251xfd/mcp251xfd.h
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@ -2,7 +2,7 @@
* *
* mcp251xfd - Microchip MCP251xFD Family CAN controller driver * mcp251xfd - Microchip MCP251xFD Family CAN controller driver
* *
* Copyright (c) 2019, 2020 Pengutronix, * Copyright (c) 2019, 2020, 2021 Pengutronix,
* Marc Kleine-Budde <kernel@pengutronix.de> * Marc Kleine-Budde <kernel@pengutronix.de>
* Copyright (c) 2019 Martin Sperl <kernel@martin.sperl.org> * 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_SPI 1
#define MCP251XFD_SANITIZE_CAN 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 */ /* Silence TX MAB overflow warnings */
#define MCP251XFD_QUIRK_MAB_NO_WARN BIT(0) #define MCP251XFD_QUIRK_MAB_NO_WARN BIT(0)
/* Use CRC to access registers */ /* Use CRC to access registers */
@ -596,9 +605,9 @@ struct mcp251xfd_priv {
u32 spi_max_speed_hz_fast; u32 spi_max_speed_hz_fast;
u32 spi_max_speed_hz_slow; u32 spi_max_speed_hz_slow;
struct mcp251xfd_tef_ring tef[1]; struct mcp251xfd_tef_ring tef[MCP251XFD_FIFO_TEF_NUM];
struct mcp251xfd_rx_ring *rx[1]; struct mcp251xfd_rx_ring *rx[MCP251XFD_FIFO_RX_NUM_MAX];
struct mcp251xfd_tx_ring tx[1]; struct mcp251xfd_tx_ring tx[MCP251XFD_FIFO_TX_NUM];
u8 rx_ring_num; u8 rx_ring_num;