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i3c: master: svc: rename read_len as actual_len

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I3C transfer (SDR), target can early terminate read transfer.
I3C transfer (HDR), target can end write transfer.
I2C transfer, target can NACK write transfer.

'actual_len' is better name than 'read_len'.

Reviewed-by: Miquel Raynal <miquel.raynal@bootlin.com>
Signed-off-by: Frank Li <Frank.Li@nxp.com>
Link: https://lore.kernel.org/r/20231201222532.2431484-5-Frank.Li@nxp.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Frank Li 2023-12-01 17:25:30 -05:00 committed by Alexandre Belloni
parent e5e3df06ac
commit 6fb61734a7
1 changed files with 13 additions and 13 deletions
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26
drivers/i3c/master/svc-i3c-master.c
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@ -137,7 +137,7 @@ struct svc_i3c_cmd {
u8 *in;
const void *out;
unsigned int len;
unsigned int read_len;
unsigned int actual_len;
bool continued;
};
@ -1039,7 +1039,7 @@ static int svc_i3c_master_write(struct svc_i3c_master *master,
static int svc_i3c_master_xfer(struct svc_i3c_master *master,
bool rnw, unsigned int xfer_type, u8 addr,
u8 *in, const u8 *out, unsigned int xfer_len,
unsigned int *read_len, bool continued)
unsigned int *actual_len, bool continued)
{
u32 reg;
int ret;
@ -1052,7 +1052,7 @@ static int svc_i3c_master_xfer(struct svc_i3c_master *master,
SVC_I3C_MCTRL_IBIRESP_NACK |
SVC_I3C_MCTRL_DIR(rnw) |
SVC_I3C_MCTRL_ADDR(addr) |
SVC_I3C_MCTRL_RDTERM(*read_len),
SVC_I3C_MCTRL_RDTERM(*actual_len),
master->regs + SVC_I3C_MCTRL);
ret = readl_poll_timeout(master->regs + SVC_I3C_MSTATUS, reg,
@ -1090,7 +1090,7 @@ static int svc_i3c_master_xfer(struct svc_i3c_master *master,
goto emit_stop;
if (rnw)
*read_len = ret;
*actual_len = ret;
ret = readl_poll_timeout(master->regs + SVC_I3C_MSTATUS, reg,
SVC_I3C_MSTATUS_COMPLETE(reg), 0, 1000);
@ -1172,7 +1172,7 @@ static void svc_i3c_master_start_xfer_locked(struct svc_i3c_master *master)
ret = svc_i3c_master_xfer(master, cmd->rnw, xfer->type,
cmd->addr, cmd->in, cmd->out,
cmd->len, &cmd->read_len,
cmd->len, &cmd->actual_len,
cmd->continued);
if (ret)
break;
@ -1258,7 +1258,7 @@ static int svc_i3c_master_send_bdcast_ccc_cmd(struct svc_i3c_master *master,
cmd->in = NULL;
cmd->out = buf;
cmd->len = xfer_len;
cmd->read_len = 0;
cmd->actual_len = 0;
cmd->continued = false;
mutex_lock(&master->lock);
@ -1278,7 +1278,7 @@ static int svc_i3c_master_send_direct_ccc_cmd(struct svc_i3c_master *master,
struct i3c_ccc_cmd *ccc)
{
unsigned int xfer_len = ccc->dests[0].payload.len;
unsigned int read_len = ccc->rnw ? xfer_len : 0;
unsigned int actual_len = ccc->rnw ? xfer_len : 0;
struct svc_i3c_xfer *xfer;
struct svc_i3c_cmd *cmd;
int ret;
@ -1296,7 +1296,7 @@ static int svc_i3c_master_send_direct_ccc_cmd(struct svc_i3c_master *master,
cmd->in = NULL;
cmd->out = &ccc->id;
cmd->len = 1;
cmd->read_len = 0;
cmd->actual_len = 0;
cmd->continued = true;
/* Directed message */
@ -1306,7 +1306,7 @@ static int svc_i3c_master_send_direct_ccc_cmd(struct svc_i3c_master *master,
cmd->in = ccc->rnw ? ccc->dests[0].payload.data : NULL;
cmd->out = ccc->rnw ? NULL : ccc->dests[0].payload.data,
cmd->len = xfer_len;
cmd->read_len = read_len;
cmd->actual_len = actual_len;
cmd->continued = false;
mutex_lock(&master->lock);
@ -1315,8 +1315,8 @@ static int svc_i3c_master_send_direct_ccc_cmd(struct svc_i3c_master *master,
svc_i3c_master_dequeue_xfer(master, xfer);
mutex_unlock(&master->lock);
if (cmd->read_len != xfer_len)
ccc->dests[0].payload.len = cmd->read_len;
if (cmd->actual_len != xfer_len)
ccc->dests[0].payload.len = cmd->actual_len;
ret = xfer->ret;
svc_i3c_master_free_xfer(xfer);
@ -1366,7 +1366,7 @@ static int svc_i3c_master_priv_xfers(struct i3c_dev_desc *dev,
cmd->in = xfers[i].rnw ? xfers[i].data.in : NULL;
cmd->out = xfers[i].rnw ? NULL : xfers[i].data.out;
cmd->len = xfers[i].len;
cmd->read_len = xfers[i].rnw ? xfers[i].len : 0;
cmd->actual_len = xfers[i].rnw ? xfers[i].len : 0;
cmd->continued = (i + 1) < nxfers;
}
@ -1406,7 +1406,7 @@ static int svc_i3c_master_i2c_xfers(struct i2c_dev_desc *dev,
cmd->in = cmd->rnw ? xfers[i].buf : NULL;
cmd->out = cmd->rnw ? NULL : xfers[i].buf;
cmd->len = xfers[i].len;
cmd->read_len = cmd->rnw ? xfers[i].len : 0;
cmd->actual_len = cmd->rnw ? xfers[i].len : 0;
cmd->continued = (i + 1 < nxfers);
}