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Commit 1247cf7a authored by Jeremy Kerr's avatar Jeremy Kerr Committed by Greg Kroah-Hartman
Browse files

drivers/fsi/gpio: Add tracepoints for GPIO master 



Trace low level input/output GPIO operations.

Signed-off-by: default avatarJeremy Kerr <jk@ozlabs.org>
Signed-off-by: default avatarChristopher Bostic <cbostic@linux.vnet.ibm.com>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent ac0385d9

drivers/fsi/fsi-master-gpio.c

+9 −0
Original line number Diff line number Diff line
@@ -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);

include/trace/events/fsi_master_gpio.h

0 → 100644
+68 −0
Original line number Diff line number Diff line 


#undef TRACE_SYSTEM

#define TRACE_SYSTEM fsi_master_gpio



#if !defined(_TRACE_FSI_MASTER_GPIO_H) || defined(TRACE_HEADER_MULTI_READ)

#define _TRACE_FSI_MASTER_GPIO_H



#include <linux/tracepoint.h>



TRACE_EVENT(fsi_master_gpio_in,

	TP_PROTO(const struct fsi_master_gpio *master, int bits, uint64_t msg),

	TP_ARGS(master, bits, msg),

	TP_STRUCT__entry(

		__field(int,	master_idx)

		__field(int,	bits)

		__field(uint64_t, msg)

	),

	TP_fast_assign(

		__entry->master_idx = master->master.idx;

		__entry->bits = bits;

		__entry->msg  = msg & ((1ull<<bits) - 1);

	),

	TP_printk("fsi-gpio%d => %0*llx[%d]",

		__entry->master_idx,

		(__entry->bits + 3) / 4,

		__entry->msg,

		__entry->bits

	)

);



TRACE_EVENT(fsi_master_gpio_out,

	TP_PROTO(const struct fsi_master_gpio *master, int bits, uint64_t msg),

	TP_ARGS(master, bits, msg),

	TP_STRUCT__entry(

		__field(int,	master_idx)

		__field(int,	bits)

		__field(uint64_t, msg)

	),

	TP_fast_assign(

		__entry->master_idx = master->master.idx;

		__entry->bits = bits;

		__entry->msg  = msg & ((1ull<<bits) - 1);

	),

	TP_printk("fsi-gpio%d <= %0*llx[%d]",

		__entry->master_idx,

		(__entry->bits + 3) / 4,

		__entry->msg,

		__entry->bits

	)

);



TRACE_EVENT(fsi_master_gpio_break,

	TP_PROTO(const struct fsi_master_gpio *master),

	TP_ARGS(master),

	TP_STRUCT__entry(

		__field(int,	master_idx)

	),

	TP_fast_assign(

		__entry->master_idx = master->master.idx;

	),

	TP_printk("fsi-gpio%d ----break---",

		__entry->master_idx

	)

);



#endif /* _TRACE_FSI_MASTER_GPIO_H */



#include <trace/define_trace.h>