drivers/fsi/gpio: Add tracepoints for GPIO master

Trace low level input/output GPIO operations.

Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Christopher Bostic <cbostic@linux.vnet.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

1 files changed, 9 insertions, 0 deletions

diff --git a/drivers/fsi/fsi-master-gpio.c b/drivers/fsi/fsi-master-gpio.c
index d467e61065a9..a5d6e705b3c5 100644
--- a/drivers/fsi/fsi-master-gpio.c
+++ b/drivers/fsi/fsi-master-gpio.c
@@ -61,6 +61,9 @@ struct fsi_master_gpio {
         struct gpio_desc        *gpio_mux;      /* Mux control */
 };
 
+#define CREATE_TRACE_POINTS
+#include <trace/events/fsi_master_gpio.h>
+
 #define to_fsi_master_gpio(m) container_of(m, struct fsi_master_gpio, master)
 
 struct fsi_gpio_msg {
@@ -126,6 +129,8 @@ static void serial_in(struct fsi_master_gpio *master, struct fsi_gpio_msg *msg,
                 msg->msg |= ~in_bit & 0x1;      /* Data is active low */
         }
         msg->bits += num_bits;
+
+        trace_fsi_master_gpio_in(master, num_bits, msg->msg);
 }
 
 static void serial_out(struct fsi_master_gpio *master,
@@ -137,6 +142,8 @@ static void serial_out(struct fsi_master_gpio *master,
         uint64_t last_bit = ~0;
         int next_bit;
 
+        trace_fsi_master_gpio_out(master, cmd->bits, cmd->msg);
+
         if (!cmd->bits) {
                 dev_warn(master->dev, "trying to output 0 bits\n");
                 return;
@@ -458,6 +465,8 @@ static int fsi_master_gpio_break(struct fsi_master *_master, int link)
         if (link != 0)
                 return -ENODEV;
 
+        trace_fsi_master_gpio_break(master);
+
         set_sda_output(master, 1);
         sda_out(master, 1);
         clock_toggle(master, FSI_PRE_BREAK_CLOCKS);