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Commit b340a902 authored by Umesh Vats's avatar Umesh Vats
Browse files

Bluetooth: Add retry for XO GPIO request 



Add retries for XO GPIO requests.

Change-Id: If6bf4568559bf712274bc3988424f35c8d0e6a93
Signed-off-by: default avatarUmesh Vats <uvats@codeaurora.org>
parent eafa5790

drivers/bluetooth/btpower.c

+12 −1
Original line number Diff line number Diff line
@@ -41,6 +41,7 @@ 
#define PWR_SRC_NOT_AVAILABLE -2

#define DEFAULT_INVALID_VALUE -1

#define PWR_SRC_INIT_STATE_IDX 0

#define XO_RESET_RETRY_COUNT_MAX 5



#define PWR_SRC_LOG_UNSUPPORTED {DEFAULT_INVALID_VALUE, DEFAULT_INVALID_VALUE}
@@ -361,6 +362,7 @@ static int bt_configure_gpios(int on) 
	int bt_debug_gpio  =  bt_power_pdata->bt_gpio_debug;

	int xo_reset_gpio =  bt_power_pdata->xo_gpio_sys_rst;

	int assert_dbg_gpio = 0;

	int retry = 0;



	if (on) {

		rc = gpio_request(bt_reset_gpio, "bt_sys_rst_n");
@@ -430,9 +432,18 @@ static int bt_configure_gpios(int on) 
		pr_info("xo_reset_gpio(%d)\n", xo_reset_gpio);



		if (xo_reset_gpio > 0) {

retry_gpio_req:

			rc = gpio_request(xo_reset_gpio, "xo_reset_gpio_n");

			if (rc) {

				pr_err("%s: unable to request gpio %d (%d)\n",

				if (retry++ < XO_RESET_RETRY_COUNT_MAX) {

					/* wait for ~(10 - 20) ms */

					usleep_range(10000, 20000);

					goto retry_gpio_req;

				}

			}



			if (rc) {

				pr_err("%s: unable to request XO reset gpio %d (%d)\n",

					__func__, xo_reset_gpio, rc);

			} else {

				pr_info("%s: gpio_request for xo_reset_gpio succeed\n",