diff options
Diffstat (limited to 'drivers/net/can/spi/mcp251xfd/mcp251xfd.h')
| -rw-r--r-- | drivers/net/can/spi/mcp251xfd/mcp251xfd.h | 36 |
1 files changed, 35 insertions, 1 deletions
diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd.h b/drivers/net/can/spi/mcp251xfd/mcp251xfd.h index 0f322dabaf65..f551c900803e 100644 --- a/drivers/net/can/spi/mcp251xfd/mcp251xfd.h +++ b/drivers/net/can/spi/mcp251xfd/mcp251xfd.h @@ -10,6 +10,7 @@ #ifndef _MCP251XFD_H #define _MCP251XFD_H +#include <linux/bitfield.h> #include <linux/can/core.h> #include <linux/can/dev.h> #include <linux/can/rx-offload.h> @@ -625,6 +626,12 @@ MCP251XFD_IS(2517); MCP251XFD_IS(2518); MCP251XFD_IS(251X); +static inline bool mcp251xfd_is_fd_mode(const struct mcp251xfd_priv *priv) +{ + /* listen-only mode works like FD mode */ + return priv->can.ctrlmode & (CAN_CTRLMODE_LISTENONLY | CAN_CTRLMODE_FD); +} + static inline u8 mcp251xfd_first_byte_set(u32 mask) { return (mask & 0x0000ffff) ? @@ -761,6 +768,24 @@ mcp251xfd_get_rx_obj_addr(const struct mcp251xfd_rx_ring *ring, u8 n) return ring->base + ring->obj_size * n; } +static inline int +mcp251xfd_tx_tail_get_from_chip(const struct mcp251xfd_priv *priv, + u8 *tx_tail) +{ + u32 fifo_sta; + int err; + + err = regmap_read(priv->map_reg, + MCP251XFD_REG_FIFOSTA(MCP251XFD_TX_FIFO), + &fifo_sta); + if (err) + return err; + + *tx_tail = FIELD_GET(MCP251XFD_REG_FIFOSTA_FIFOCI_MASK, fifo_sta); + + return 0; +} + static inline u8 mcp251xfd_get_tef_head(const struct mcp251xfd_priv *priv) { return priv->tef->head & (priv->tx->obj_num - 1); @@ -849,15 +874,24 @@ mcp251xfd_get_rx_linear_len(const struct mcp251xfd_rx_ring *ring) (n) < (priv)->rx_ring_num; \ (n)++, (ring) = *((priv)->rx + (n))) -int mcp251xfd_regmap_init(struct mcp251xfd_priv *priv); +int mcp251xfd_chip_fifo_init(const struct mcp251xfd_priv *priv); u16 mcp251xfd_crc16_compute2(const void *cmd, size_t cmd_size, const void *data, size_t data_size); u16 mcp251xfd_crc16_compute(const void *data, size_t data_size); +int mcp251xfd_regmap_init(struct mcp251xfd_priv *priv); +void mcp251xfd_ring_init(struct mcp251xfd_priv *priv); +void mcp251xfd_ring_free(struct mcp251xfd_priv *priv); +int mcp251xfd_ring_alloc(struct mcp251xfd_priv *priv); +int mcp251xfd_handle_rxif(struct mcp251xfd_priv *priv); +int mcp251xfd_handle_tefif(struct mcp251xfd_priv *priv); void mcp251xfd_skb_set_timestamp(const struct mcp251xfd_priv *priv, struct sk_buff *skb, u32 timestamp); void mcp251xfd_timestamp_init(struct mcp251xfd_priv *priv); void mcp251xfd_timestamp_stop(struct mcp251xfd_priv *priv); +netdev_tx_t mcp251xfd_start_xmit(struct sk_buff *skb, + struct net_device *ndev); + #if IS_ENABLED(CONFIG_DEV_COREDUMP) void mcp251xfd_dump(const struct mcp251xfd_priv *priv); #else |