Commit aada7422 authored by Marc Kleine-Budde's avatar Marc Kleine-Budde

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.deSigned-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
parent 887e359d
......@@ -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;
......
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