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| author | Jeremy Kerr <jk@codeconstruct.com.au> | 2023-03-30 15:50:32 +0800 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2023-04-28 08:20:07 +0200 |
| commit | 79f42b31c2ec78416bc7dd6c9f21c3334879c43a (patch) | |
| tree | 0a4099aa2075fff393f59ffadd4a048a95b5ea0b /drivers/i3c | |
| parent | 7dc2e0a875645a79f5c1c063019397e8e94008f5 (diff) | |
| download | linux-79f42b31c2ec78416bc7dd6c9f21c3334879c43a.tar.gz | |
i3c: dw: Create a generic fifo read function
In a future change we'll want to read from the IBI FIFO too, so turn
dw_i3c_read_rx_fifo() into a generic read with the FIFO register as a
parameter.
Signed-off-by: Jeremy Kerr <jk@codeconstruct.com.au>
Reviewed-by: Joel Stanley <joel@jms.id.au>
Link: https://lore.kernel.org/r/827204789583dd86addffb47ecaeab9d67cf95d5.1680161823.git.jk@codeconstruct.com.au
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Diffstat (limited to 'drivers/i3c')
| -rw-r--r-- | drivers/i3c/master/dw-i3c-master.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/drivers/i3c/master/dw-i3c-master.c b/drivers/i3c/master/dw-i3c-master.c index 00163b5081bd89..c2011447f75745 100644 --- a/drivers/i3c/master/dw-i3c-master.c +++ b/drivers/i3c/master/dw-i3c-master.c @@ -318,18 +318,24 @@ static void dw_i3c_master_wr_tx_fifo(struct dw_i3c_master *master, } } -static void dw_i3c_master_read_rx_fifo(struct dw_i3c_master *master, - u8 *bytes, int nbytes) +static void dw_i3c_master_read_fifo(struct dw_i3c_master *master, + int reg, u8 *bytes, int nbytes) { - readsl(master->regs + RX_TX_DATA_PORT, bytes, nbytes / 4); + readsl(master->regs + reg, bytes, nbytes / 4); if (nbytes & 3) { u32 tmp; - readsl(master->regs + RX_TX_DATA_PORT, &tmp, 1); + readsl(master->regs + reg, &tmp, 1); memcpy(bytes + (nbytes & ~3), &tmp, nbytes & 3); } } +static void dw_i3c_master_read_rx_fifo(struct dw_i3c_master *master, + u8 *bytes, int nbytes) +{ + return dw_i3c_master_read_fifo(master, RX_TX_DATA_PORT, bytes, nbytes); +} + static struct dw_i3c_xfer * dw_i3c_master_alloc_xfer(struct dw_i3c_master *master, unsigned int ncmds) { |