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fsi: Add trace events in initialization path

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Add definitions for trace events to show the scanning flow.

Signed-off-by: Eddie James <eajames@linux.ibm.com>
Reviewed-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/20220207161640.35605-1-eajames@linux.ibm.com
Signed-off-by: Joel Stanley <joel@jms.id.au>
This commit is contained in:
Eddie James
2022-02-07 10:16:40 -06:00
committed by Joel Stanley
parent a1dc630886
commit f2af60bb7c
4 changed files with 108 additions and 3 deletions
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11
drivers/fsi/fsi-core.c
View File

@@ -24,9 +24,6 @@
#include "fsi-master.h"
#define CREATE_TRACE_POINTS
#include <trace/events/fsi.h>
#define FSI_SLAVE_CONF_NEXT_MASK GENMASK(31, 31)
#define FSI_SLAVE_CONF_SLOTS_MASK GENMASK(23, 16)
#define FSI_SLAVE_CONF_SLOTS_SHIFT 16
@@ -95,6 +92,9 @@ struct fsi_slave {
u8 t_echo_delay;
};
#define CREATE_TRACE_POINTS
#include <trace/events/fsi.h>
#define to_fsi_master(d) container_of(d, struct fsi_master, dev)
#define to_fsi_slave(d) container_of(d, struct fsi_slave, dev)
@@ -524,6 +524,8 @@ static int fsi_slave_scan(struct fsi_slave *slave)
dev->addr = engine_addr;
dev->size = slots * engine_page_size;
trace_fsi_dev_init(dev);
dev_dbg(&slave->dev,
"engine[%i]: type %x, version %x, addr %x size %x\n",
dev->unit, dev->engine_type, version,
@@ -1006,6 +1008,7 @@ static int fsi_slave_init(struct fsi_master *master, int link, uint8_t id)
crc = crc4(0, cfam_id, 32);
if (crc) {
trace_fsi_slave_invalid_cfam(master, link, cfam_id);
dev_warn(&master->dev, "slave %02x:%02x invalid cfam id CRC!\n",
link, id);
return -EIO;
@@ -1080,6 +1083,8 @@ static int fsi_slave_init(struct fsi_master *master, int link, uint8_t id)
if (rc)
goto err_free;
trace_fsi_slave_init(slave);
/* Create chardev for userspace access */
cdev_init(&slave->cdev, &cfam_fops);
rc = cdev_device_add(&slave->cdev, &slave->dev);

2
drivers/fsi/fsi-master-aspeed.c
View File

@@ -449,11 +449,13 @@ static ssize_t cfam_reset_store(struct device *dev, struct device_attribute *att
{
struct fsi_master_aspeed *aspeed = dev_get_drvdata(dev);
trace_fsi_master_aspeed_cfam_reset(true);
mutex_lock(&aspeed->lock);
gpiod_set_value(aspeed->cfam_reset_gpio, 1);
usleep_range(900, 1000);
gpiod_set_value(aspeed->cfam_reset_gpio, 0);
mutex_unlock(&aspeed->lock);
trace_fsi_master_aspeed_cfam_reset(false);
return count;
}