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| author | Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be> | 2020-09-18 19:25:34 +0200 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2020-09-21 10:13:20 +0200 |
| commit | 33ea42f69f194ee6f00761e14d0f9db9b1701c1e (patch) | |
| tree | 8f36c7d05bb904ab2c5d4d3bb65b6c3aedd7475b /drivers/net/can | |
| parent | 55e5b97f003e85e66babb55f357627d52081a264 (diff) | |
| download | lwn-33ea42f69f194ee6f00761e14d0f9db9b1701c1e.tar.gz lwn-33ea42f69f194ee6f00761e14d0f9db9b1701c1e.zip | |
can: mcp25xxfd: add listen-only mode
This commit enables listen-only mode, which works internally like CANFD mode.
Signed-off-by: Kurt Van Dijck <dev.kurt@vandijck-laurijssen.be>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Link: https://lore.kernel.org/r/20200918172536.2074504-5-mkl@pengutronix.de
Diffstat (limited to 'drivers/net/can')
| -rw-r--r-- | drivers/net/can/spi/mcp25xxfd/mcp25xxfd-core.c | 16 |
1 files changed, 10 insertions, 6 deletions
diff --git a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd-core.c b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd-core.c index 10e4b6d07f95..bd2ba981ae36 100644 --- a/drivers/net/can/spi/mcp25xxfd/mcp25xxfd-core.c +++ b/drivers/net/can/spi/mcp25xxfd/mcp25xxfd-core.c @@ -392,7 +392,8 @@ static int mcp25xxfd_ring_alloc(struct mcp25xxfd_priv *priv) int ram_free, i; tef_obj_size = sizeof(struct mcp25xxfd_hw_tef_obj); - if (priv->can.ctrlmode & CAN_CTRLMODE_FD) { + /* listen-only mode works like FD mode */ + if (priv->can.ctrlmode & (CAN_CTRLMODE_LISTENONLY | CAN_CTRLMODE_FD)) { tx_obj_num = MCP25XXFD_TX_OBJ_NUM_CANFD; tx_obj_size = sizeof(struct mcp25xxfd_hw_tx_obj_canfd); rx_obj_size = sizeof(struct mcp25xxfd_hw_rx_obj_canfd); @@ -807,7 +808,7 @@ mcp25xxfd_chip_rx_fifo_init_one(const struct mcp25xxfd_priv *priv, MCP25XXFD_REG_FIFOCON_RXOVIE | MCP25XXFD_REG_FIFOCON_TFNRFNIE; - if (priv->can.ctrlmode & CAN_CTRLMODE_FD) + if (priv->can.ctrlmode & (CAN_CTRLMODE_LISTENONLY | CAN_CTRLMODE_FD)) fifo_con |= FIELD_PREP(MCP25XXFD_REG_FIFOCON_PLSIZE_MASK, MCP25XXFD_REG_FIFOCON_PLSIZE_64); else @@ -857,7 +858,7 @@ static int mcp25xxfd_chip_fifo_init(const struct mcp25xxfd_priv *priv) MCP25XXFD_REG_FIFOCON_TXEN | MCP25XXFD_REG_FIFOCON_TXATIE; - if (priv->can.ctrlmode & CAN_CTRLMODE_FD) + if (priv->can.ctrlmode & (CAN_CTRLMODE_LISTENONLY | CAN_CTRLMODE_FD)) val |= FIELD_PREP(MCP25XXFD_REG_FIFOCON_PLSIZE_MASK, MCP25XXFD_REG_FIFOCON_PLSIZE_64); else @@ -930,7 +931,9 @@ static u8 mcp25xxfd_get_normal_mode(const struct mcp25xxfd_priv *priv) { u8 mode; - if (priv->can.ctrlmode & CAN_CTRLMODE_FD) + if (priv->can.ctrlmode & CAN_CTRLMODE_LISTENONLY) + mode = MCP25XXFD_REG_CON_MODE_LISTENONLY; + else if (priv->can.ctrlmode & CAN_CTRLMODE_FD) mode = MCP25XXFD_REG_CON_MODE_MIXED; else mode = MCP25XXFD_REG_CON_MODE_CAN2_0; @@ -2792,8 +2795,9 @@ static int mcp25xxfd_probe(struct spi_device *spi) priv->can.do_get_berr_counter = mcp25xxfd_get_berr_counter; priv->can.bittiming_const = &mcp25xxfd_bittiming_const; priv->can.data_bittiming_const = &mcp25xxfd_data_bittiming_const; - priv->can.ctrlmode_supported = CAN_CTRLMODE_BERR_REPORTING | - CAN_CTRLMODE_FD | CAN_CTRLMODE_FD_NON_ISO; + priv->can.ctrlmode_supported = CAN_CTRLMODE_LISTENONLY | + CAN_CTRLMODE_BERR_REPORTING | CAN_CTRLMODE_FD | + CAN_CTRLMODE_FD_NON_ISO; priv->ndev = ndev; priv->spi = spi; priv->rx_int = rx_int; |