diff options
| author | Marc Kleine-Budde <mkl@pengutronix.de> | 2021-05-21 20:51:32 +0300 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2022-01-08 22:17:42 +0300 |
| commit | 1e846c7aeb067fefbd53f03db56e69d160781d9d (patch) | |
| tree | 3a7ab74dda9e5e0c2ad73ced516ee079e6a6cfeb /drivers/net/can/spi/mcp251xfd/mcp251xfd.h | |
| parent | 09b0eb92fec7d5d8e6307c369e62e7c3926dd447 (diff) | |
| download | linux-1e846c7aeb067fefbd53f03db56e69d160781d9d.tar.xz | |
can: mcp251xfd: move TEF handling into separate file
This patch moves the TEF handling from the mcp251xfd core file into a
separate one to make the driver a bit more orderly.
Link: https://lore.kernel.org/all/20220105154300.1258636-11-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can/spi/mcp251xfd/mcp251xfd.h')
| -rw-r--r-- | drivers/net/can/spi/mcp251xfd/mcp251xfd.h | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/net/can/spi/mcp251xfd/mcp251xfd.h b/drivers/net/can/spi/mcp251xfd/mcp251xfd.h index bd1c22815f31..22a18d6fbda4 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> @@ -761,6 +762,24 @@ 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); @@ -854,6 +873,7 @@ u16 mcp251xfd_crc16_compute2(const void *cmd, size_t cmd_size, u16 mcp251xfd_crc16_compute(const void *data, size_t data_size); int mcp251xfd_regmap_init(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); |