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Commit 25375e0e authored by xianzhu's avatar xianzhu Committed by Gerrit - the friendly Code Review server
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serial: msm_geni_serial: add boot marker 



add marker in uart driver for start-up time measurement.

Change-Id: Ideeea57d68382343b1e6c9b3e5a8e2045a0ac6c7
Signed-off-by: default avatarxianzhu <xianzhu@codeaurora.org>
parent c93d9386

drivers/tty/serial/msm_geni_serial.c

+21 −2
Original line number Diff line number Diff line
@@ -29,6 +29,7 @@ 
#include <linux/slab.h>

#include <linux/tty.h>

#include <linux/tty_flip.h>

#include <soc/qcom/boot_stats.h>



/* UART specific GENI registers */

#define SE_UART_LOOPBACK_CFG		(0x22C)
@@ -2338,6 +2339,7 @@ static int msm_geni_serial_probe(struct platform_device *pdev) 
	struct platform_device *wrapper_pdev;

	struct device_node *wrapper_ph_node;

	u32 wake_char = 0;

	char boot_marker[40];



	id = of_match_device(msm_geni_device_tbl, &pdev->dev);

	if (id) {
@@ -2362,6 +2364,15 @@ static int msm_geni_serial_probe(struct platform_device *pdev) 


	if ((line < 0) || (line >= GENI_UART_NR_PORTS))

		return -ENXIO;



	if (strcmp(id->compatible, "qcom,msm-geni-console") == 0)

		snprintf(boot_marker, sizeof(boot_marker),

				"M - DRIVER GENI_UART_%d Init", line);

	else

		snprintf(boot_marker, sizeof(boot_marker),

				"M - DRIVER GENI_HS_UART_%d Init", line);

	place_marker(boot_marker);



	is_console = (drv->cons ? true : false);

	dev_port = get_port_from_line(line, is_console);

	if (IS_ERR_OR_NULL(dev_port)) {
@@ -2538,8 +2549,16 @@ static int msm_geni_serial_probe(struct platform_device *pdev) 
	device_create_file(uport->dev, &dev_attr_xfer_mode);

	msm_geni_serial_debug_init(uport, is_console);

	dev_port->port_setup = false;

	return uart_add_one_port(drv, uport);



	ret = uart_add_one_port(drv, uport);

	if (!ret) {

		if (strcmp(id->compatible, "qcom,msm-geni-console") == 0)

			snprintf(boot_marker, sizeof(boot_marker),

				"M - DRIVER GENI_UART_%d Ready", line);

		else

			snprintf(boot_marker, sizeof(boot_marker),

				"M - DRIVER GENI_HS_UART_%d Ready", line);

		place_marker(boot_marker);

	}

exit_geni_serial_probe:

	return ret;

}