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i2c: fsi: reword according to newest specification

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Change the wording of this driver wrt. the newest I2C v7 and SMBus 3.2
specifications and replace "master/slave" with more appropriate terms.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Andi Shyti <andi.shyti@kernel.org>
Signed-off-by: Andi Shyti <andi.shyti@kernel.org>
This commit is contained in:
Wolfram Sang 2024-07-06 13:20:15 +02:00 committed by Andi Shyti
parent 37ce300ed6
commit 57deeb98d5
1 changed files with 28 additions and 28 deletions
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56
drivers/i2c/busses/i2c-fsi.c
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@ -1,6 +1,6 @@
// SPDX-License-Identifier: GPL-2.0+
/*
* FSI-attached I2C master algorithm
* FSI-attached I2C controller algorithm
*
* Copyright 2018 IBM Corporation
*
@ -145,7 +145,7 @@
/* choose timeout length from legacy driver; it's well tested */
#define I2C_ABORT_TIMEOUT msecs_to_jiffies(100)
struct fsi_i2c_master {
struct fsi_i2c_ctrl {
struct fsi_device *fsi;
u8 fifo_size;
struct list_head ports;
@ -155,7 +155,7 @@ struct fsi_i2c_master {
struct fsi_i2c_port {
struct list_head list;
struct i2c_adapter adapter;
struct fsi_i2c_master *master;
struct fsi_i2c_ctrl *ctrl;
u16 port;
u16 xfrd;
};
@ -183,7 +183,7 @@ static int fsi_i2c_write_reg(struct fsi_device *fsi, unsigned int reg,
return fsi_device_write(fsi, reg, &data_be, sizeof(data_be));
}
static int fsi_i2c_dev_init(struct fsi_i2c_master *i2c)
static int fsi_i2c_dev_init(struct fsi_i2c_ctrl *i2c)
{
int rc;
u32 mode = I2C_MODE_ENHANCED, extended_status, watermark;
@ -214,7 +214,7 @@ static int fsi_i2c_dev_init(struct fsi_i2c_master *i2c)
static int fsi_i2c_set_port(struct fsi_i2c_port *port)
{
int rc;
struct fsi_device *fsi = port->master->fsi;
struct fsi_device *fsi = port->ctrl->fsi;
u32 mode, dummy = 0;
rc = fsi_i2c_read_reg(fsi, I2C_FSI_MODE, &mode);
@ -236,7 +236,7 @@ static int fsi_i2c_set_port(struct fsi_i2c_port *port)
static int fsi_i2c_start(struct fsi_i2c_port *port, struct i2c_msg *msg,
bool stop)
{
struct fsi_i2c_master *i2c = port->master;
struct fsi_i2c_ctrl *i2c = port->ctrl;
u32 cmd = I2C_CMD_WITH_START | I2C_CMD_WITH_ADDR;
port->xfrd = 0;
@ -268,7 +268,7 @@ static int fsi_i2c_write_fifo(struct fsi_i2c_port *port, struct i2c_msg *msg,
{
int write;
int rc;
struct fsi_i2c_master *i2c = port->master;
struct fsi_i2c_ctrl *i2c = port->ctrl;
int bytes_to_write = i2c->fifo_size - fifo_count;
int bytes_remaining = msg->len - port->xfrd;
@ -294,7 +294,7 @@ static int fsi_i2c_read_fifo(struct fsi_i2c_port *port, struct i2c_msg *msg,
{
int read;
int rc;
struct fsi_i2c_master *i2c = port->master;
struct fsi_i2c_ctrl *i2c = port->ctrl;
int bytes_to_read;
int xfr_remaining = msg->len - port->xfrd;
u32 dummy;
@ -330,7 +330,7 @@ static int fsi_i2c_get_scl(struct i2c_adapter *adap)
{
u32 stat = 0;
struct fsi_i2c_port *port = adap->algo_data;
struct fsi_i2c_master *i2c = port->master;
struct fsi_i2c_ctrl *i2c = port->ctrl;
fsi_i2c_read_reg(i2c->fsi, I2C_FSI_STAT, &stat);
@ -341,7 +341,7 @@ static void fsi_i2c_set_scl(struct i2c_adapter *adap, int val)
{
u32 dummy = 0;
struct fsi_i2c_port *port = adap->algo_data;
struct fsi_i2c_master *i2c = port->master;
struct fsi_i2c_ctrl *i2c = port->ctrl;
if (val)
fsi_i2c_write_reg(i2c->fsi, I2C_FSI_SET_SCL, &dummy);
@ -353,7 +353,7 @@ static int fsi_i2c_get_sda(struct i2c_adapter *adap)
{
u32 stat = 0;
struct fsi_i2c_port *port = adap->algo_data;
struct fsi_i2c_master *i2c = port->master;
struct fsi_i2c_ctrl *i2c = port->ctrl;
fsi_i2c_read_reg(i2c->fsi, I2C_FSI_STAT, &stat);
@ -364,7 +364,7 @@ static void fsi_i2c_set_sda(struct i2c_adapter *adap, int val)
{
u32 dummy = 0;
struct fsi_i2c_port *port = adap->algo_data;
struct fsi_i2c_master *i2c = port->master;
struct fsi_i2c_ctrl *i2c = port->ctrl;
if (val)
fsi_i2c_write_reg(i2c->fsi, I2C_FSI_SET_SDA, &dummy);
@ -377,7 +377,7 @@ static void fsi_i2c_prepare_recovery(struct i2c_adapter *adap)
int rc;
u32 mode;
struct fsi_i2c_port *port = adap->algo_data;
struct fsi_i2c_master *i2c = port->master;
struct fsi_i2c_ctrl *i2c = port->ctrl;
rc = fsi_i2c_read_reg(i2c->fsi, I2C_FSI_MODE, &mode);
if (rc)
@ -392,7 +392,7 @@ static void fsi_i2c_unprepare_recovery(struct i2c_adapter *adap)
int rc;
u32 mode;
struct fsi_i2c_port *port = adap->algo_data;
struct fsi_i2c_master *i2c = port->master;
struct fsi_i2c_ctrl *i2c = port->ctrl;
rc = fsi_i2c_read_reg(i2c->fsi, I2C_FSI_MODE, &mode);
if (rc)
@ -402,7 +402,7 @@ static void fsi_i2c_unprepare_recovery(struct i2c_adapter *adap)
fsi_i2c_write_reg(i2c->fsi, I2C_FSI_MODE, &mode);
}
static int fsi_i2c_reset_bus(struct fsi_i2c_master *i2c,
static int fsi_i2c_reset_bus(struct fsi_i2c_ctrl *i2c,
struct fsi_i2c_port *port)
{
int rc;
@ -435,7 +435,7 @@ static int fsi_i2c_reset_bus(struct fsi_i2c_master *i2c,
return fsi_i2c_dev_init(i2c);
}
static int fsi_i2c_reset_engine(struct fsi_i2c_master *i2c, u16 port)
static int fsi_i2c_reset_engine(struct fsi_i2c_ctrl *i2c, u16 port)
{
int rc;
u32 mode, dummy = 0;
@ -478,7 +478,7 @@ static int fsi_i2c_abort(struct fsi_i2c_port *port, u32 status)
unsigned long start;
u32 cmd = I2C_CMD_WITH_STOP;
u32 stat;
struct fsi_i2c_master *i2c = port->master;
struct fsi_i2c_ctrl *i2c = port->ctrl;
struct fsi_device *fsi = i2c->fsi;
rc = fsi_i2c_reset_engine(i2c, port->port);
@ -505,7 +505,7 @@ static int fsi_i2c_abort(struct fsi_i2c_port *port, u32 status)
if (rc)
return rc;
/* wait until we see command complete in the master */
/* wait until we see command complete in the controller */
start = jiffies;
do {
@ -579,7 +579,7 @@ static int fsi_i2c_wait(struct fsi_i2c_port *port, struct i2c_msg *msg,
unsigned long start = jiffies;
do {
rc = fsi_i2c_read_reg(port->master->fsi, I2C_FSI_STAT,
rc = fsi_i2c_read_reg(port->ctrl->fsi, I2C_FSI_STAT,
&status);
if (rc)
return rc;
@ -609,10 +609,10 @@ static int fsi_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
int i, rc;
unsigned long start_time;
struct fsi_i2c_port *port = adap->algo_data;
struct fsi_i2c_master *master = port->master;
struct fsi_i2c_ctrl *ctrl = port->ctrl;
struct i2c_msg *msg;
mutex_lock(&master->lock);
mutex_lock(&ctrl->lock);
rc = fsi_i2c_set_port(port);
if (rc)
@ -633,7 +633,7 @@ static int fsi_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg *msgs,
}
unlock:
mutex_unlock(&master->lock);
mutex_unlock(&ctrl->lock);
return rc ? : num;
}
@ -654,7 +654,7 @@ static struct i2c_bus_recovery_info fsi_i2c_bus_recovery_info = {
};
static const struct i2c_algorithm fsi_i2c_algorithm = {
.master_xfer = fsi_i2c_xfer,
.xfer = fsi_i2c_xfer,
.functionality = fsi_i2c_functionality,
};
@ -676,7 +676,7 @@ static struct device_node *fsi_i2c_find_port_of_node(struct device_node *fsi,
static int fsi_i2c_probe(struct device *dev)
{
struct fsi_i2c_master *i2c;
struct fsi_i2c_ctrl *i2c;
struct fsi_i2c_port *port;
struct device_node *np;
u32 port_no, ports, stat;
@ -699,7 +699,7 @@ static int fsi_i2c_probe(struct device *dev)
return rc;
ports = FIELD_GET(I2C_STAT_MAX_PORT, stat) + 1;
dev_dbg(dev, "I2C master has %d ports\n", ports);
dev_dbg(dev, "I2C controller has %d ports\n", ports);
for (port_no = 0; port_no < ports; port_no++) {
np = fsi_i2c_find_port_of_node(dev->of_node, port_no);
@ -712,7 +712,7 @@ static int fsi_i2c_probe(struct device *dev)
break;
}
port->master = i2c;
port->ctrl = i2c;
port->port = port_no;
port->adapter.owner = THIS_MODULE;
@ -742,7 +742,7 @@ static int fsi_i2c_probe(struct device *dev)
static int fsi_i2c_remove(struct device *dev)
{
struct fsi_i2c_master *i2c = dev_get_drvdata(dev);
struct fsi_i2c_ctrl *i2c = dev_get_drvdata(dev);
struct fsi_i2c_port *port, *tmp;
list_for_each_entry_safe(port, tmp, &i2c->ports, list) {
@ -772,5 +772,5 @@ static struct fsi_driver fsi_i2c_driver = {
module_fsi_driver(fsi_i2c_driver);
MODULE_AUTHOR("Eddie James <eajames@us.ibm.com>");
MODULE_DESCRIPTION("FSI attached I2C master");
MODULE_DESCRIPTION("FSI attached I2C controller");
MODULE_LICENSE("GPL");