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Commit 5b44889b authored by Umesh Vats's avatar Umesh Vats Committed by Gerrit - the friendly Code Review server
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bluetooth: add support for retrieving power resource values 



Added support for retrieving and logging values for various power
resources used by bluetooth driver.

Change-Id: I3e66ae7894b412b0925276d2d178c10f8ae614a3
Signed-off-by: default avatarUmesh Vats <uvats@codeaurora.org>
parent fdd244e3

drivers/bluetooth/bluetooth-power.c

+143 −25
Original line number Diff line number Diff line 
// SPDX-License-Identifier: GPL-2.0-only

/*

 * Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.

 */



/*
@@ -253,6 +253,9 @@ static int bt_configure_gpios(int on) 
{

	int rc = 0;

	int bt_reset_gpio = bt_power_pdata->bt_gpio_sys_rst;

	int bt_sw_ctrl_gpio  =  bt_power_pdata->bt_gpio_sw_ctrl;

	int bt_debug_gpio  =  bt_power_pdata->bt_gpio_debug;

	int assertDebugGpio = 0;



	if (on) {

		rc = gpio_request(bt_reset_gpio, "bt_sys_rst_n");
@@ -268,15 +271,53 @@ static int bt_configure_gpios(int on) 
			return rc;

		}

		msleep(50);

		BT_PWR_ERR("BTON:Turn Bt Off bt-reset-gpio(%d) value(%d)\n",

			bt_reset_gpio, gpio_get_value(bt_reset_gpio));

		BT_PWR_ERR("BTON:Turn Bt Off bt-sw-ctrl-gpio(%d) value(%d)\n",

			bt_sw_ctrl_gpio,  gpio_get_value(bt_sw_ctrl_gpio));



		rc = gpio_direction_output(bt_reset_gpio, 1);

		if (rc) {

			BT_PWR_ERR("Unable to set direction\n");

			return rc;

		}

		msleep(50);

		/*  Check  if  SW_CTRL  is  asserted  */

		if  (bt_sw_ctrl_gpio  >=  0)  {

			rc  =  gpio_direction_input(bt_sw_ctrl_gpio);

			if  (rc)  {

				BT_PWR_ERR("SWCTRL Dir Set Problem:%d\n", rc);

			}  else  if  (!gpio_get_value(bt_sw_ctrl_gpio))  {

				/*  Assert  debug  GPIO, if available  as

				 * SW_CTRL  is  not  asserted

				 */

				if  (bt_debug_gpio  >=  0)

					assertDebugGpio = 1;

			}

		}

		if (assertDebugGpio) {

			rc  =  gpio_request(bt_debug_gpio, "bt_debug_n");

			if  (rc)  {

				BT_PWR_ERR("unable to request Debug Gpio\n");

			}  else  {

				rc = gpio_direction_output(bt_debug_gpio,  1);

				if (rc)

					BT_PWR_ERR("Prob: Set Debug-Gpio\n");

			}

		}

		BT_PWR_ERR("BTON:Turn Bt On bt-reset-gpio(%d) value(%d)\n",

			bt_reset_gpio, gpio_get_value(bt_reset_gpio));

		BT_PWR_ERR("BTON:Turn Bt On bt-sw-ctrl-gpio(%d) value(%d)\n",

			bt_sw_ctrl_gpio,  gpio_get_value(bt_sw_ctrl_gpio));

	} else {

		gpio_set_value(bt_reset_gpio, 0);

		if  (bt_debug_gpio  >=  0)

			gpio_set_value(bt_debug_gpio,  0);

		msleep(100);

		BT_PWR_ERR("BT-OFF:bt-reset-gpio(%d) value(%d)\n",

			bt_reset_gpio, gpio_get_value(bt_reset_gpio));

		BT_PWR_ERR("BT-OFF:bt-sw-ctrl-gpio(%d) value(%d)\n",

			bt_sw_ctrl_gpio,  gpio_get_value(bt_sw_ctrl_gpio));

	}



	BT_PWR_ERR("bt_gpio= %d on: %d is successful", bt_reset_gpio, on);
@@ -392,6 +433,10 @@ static int bluetooth_power(int on) 
gpio_fail:

		if (bt_power_pdata->bt_gpio_sys_rst > 0)

			gpio_free(bt_power_pdata->bt_gpio_sys_rst);

		if  (bt_power_pdata->bt_gpio_sw_ctrl  >  0)

			gpio_free(bt_power_pdata->bt_gpio_sw_ctrl);

		if  (bt_power_pdata->bt_gpio_debug  >  0)

			gpio_free(bt_power_pdata->bt_gpio_debug);

		if (bt_power_pdata->bt_chip_clk)

			bt_clk_disable(bt_power_pdata->bt_chip_clk);

clk_fail:
@@ -660,72 +705,60 @@ static int bt_power_populate_dt_pinfo(struct platform_device *pdev) 
		if (bt_power_pdata->bt_gpio_sys_rst < 0)

			BT_PWR_INFO("bt-reset-gpio not provided in devicetree");



		bt_power_pdata->bt_gpio_sw_ctrl  =

			of_get_named_gpio(pdev->dev.of_node,

						"qca,bt-sw-ctrl-gpio",  0);



		bt_power_pdata->bt_gpio_debug  =

			of_get_named_gpio(pdev->dev.of_node,

						"qca,bt-debug-gpio",  0);



		rc = bt_dt_parse_vreg_info(&pdev->dev,

					&bt_power_pdata->bt_vdd_core,

					"qca,bt-vdd-core");

		if (rc < 0)

			BT_PWR_ERR("bt-vdd-core not provided in device tree");



		rc = bt_dt_parse_vreg_info(&pdev->dev,

					&bt_power_pdata->bt_vdd_io,

					"qca,bt-vdd-io");

		if (rc < 0)

			BT_PWR_ERR("bt-vdd-io not provided in device tree");



		rc = bt_dt_parse_vreg_info(&pdev->dev,

					&bt_power_pdata->bt_vdd_xtal,

					"qca,bt-vdd-xtal");

		if (rc < 0)

			BT_PWR_ERR("bt-vdd-xtal not provided in device tree");



		rc = bt_dt_parse_vreg_info(&pdev->dev,

					&bt_power_pdata->bt_vdd_pa,

					"qca,bt-vdd-pa");

		if (rc < 0)

			BT_PWR_ERR("bt-vdd-pa not provided in device tree");



		rc = bt_dt_parse_vreg_info(&pdev->dev,

					&bt_power_pdata->bt_vdd_ldo,

					"qca,bt-vdd-ldo");

		if (rc < 0)

			BT_PWR_ERR("bt-vdd-ldo not provided in device tree");



		rc = bt_dt_parse_vreg_info(&pdev->dev,

					&bt_power_pdata->bt_chip_pwd,

					"qca,bt-chip-pwd");

		if (rc < 0)

			BT_PWR_ERR("bt-chip-pwd not provided in device tree");



		rc = bt_dt_parse_vreg_info(&pdev->dev,

					&bt_power_pdata->bt_vdd_aon,

					"qca,bt-vdd-aon");

		if (rc < 0)

			BT_PWR_ERR("bt-vdd-aon not provided in device tree");



		rc = bt_dt_parse_vreg_info(&pdev->dev,

					&bt_power_pdata->bt_vdd_dig,

					"qca,bt-vdd-dig");

		if (rc < 0)

			BT_PWR_ERR("bt-vdd-dig not provided in device tree");



		rc = bt_dt_parse_vreg_info(&pdev->dev,

					&bt_power_pdata->bt_vdd_rfa1,

					"qca,bt-vdd-rfa1");

		if (rc < 0)

			BT_PWR_ERR("bt-vdd-rfa1 not provided in device tree");



		rc = bt_dt_parse_vreg_info(&pdev->dev,

					&bt_power_pdata->bt_vdd_rfa2,

					"qca,bt-vdd-rfa2");

		if (rc < 0)

			BT_PWR_ERR("bt-vdd-rfa2 not provided in device tree");



		rc = bt_dt_parse_vreg_info(&pdev->dev,

					&bt_power_pdata->bt_vdd_asd,

					"qca,bt-vdd-asd");

		if (rc < 0)

			BT_PWR_ERR("bt-vdd-asd not provided in device tree");



		rc = bt_dt_parse_clk_info(&pdev->dev,

					&bt_power_pdata->bt_chip_clk);

		if (rc < 0)

			BT_PWR_ERR("clock not provided in device tree");

	}



	bt_power_pdata->bt_power_setup = bluetooth_power;
@@ -818,6 +851,7 @@ static long bt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 
{

	int ret = 0, pwr_cntrl = 0;

	int chipset_version = 0;

	long  value  =  -1;



	switch (cmd) {

	case BT_CMD_SLIM_TEST:
@@ -854,6 +888,90 @@ static long bt_ioctl(struct file *file, unsigned int cmd, unsigned long arg) 
			soc_id = 0;

		}

		break;

	case BT_CMD_GETVAL_RESET_GPIO:

		if (bt_power_pdata->bt_gpio_sys_rst > 0) {

			value = (long)gpio_get_value(

				bt_power_pdata->bt_gpio_sys_rst);

			BT_PWR_ERR("GET_RESET_GPIO(%d) value(%d)",

				bt_power_pdata->bt_gpio_sys_rst, value);

			ret = value;

		} else {

			BT_PWR_ERR("RESET_GPIO not configured");

			ret = -EINVAL;

		}

		break;

	case BT_CMD_GETVAL_SW_CTRL_GPIO:

		if (bt_power_pdata->bt_gpio_sw_ctrl > 0) {

			value = (long)gpio_get_value(

				bt_power_pdata->bt_gpio_sw_ctrl);

			BT_PWR_ERR("GET_SWCTRL_GPIO(%d) value(%d)",

				bt_power_pdata->bt_gpio_sw_ctrl,  value);

			ret = value;

		} else {

			BT_PWR_ERR("SW_CTRL_GPIO not configured");

			ret = -EINVAL;

		}

		break;

	case BT_CMD_GETVAL_VDD_AON_LDO:

		if ((bt_power_pdata->bt_vdd_aon) &&

				(bt_power_pdata->bt_vdd_aon->is_enabled) &&

				(regulator_is_enabled(

					bt_power_pdata->bt_vdd_aon->reg))) {

			value = (int)regulator_get_voltage(

				bt_power_pdata->bt_vdd_aon->reg);

			BT_PWR_ERR("GET_VDD_AON_LDO(%d) value(%d)",

				bt_power_pdata->bt_vdd_aon, value);

			ret = value;

		} else {

			BT_PWR_ERR("VDD-AON_LDO not configure/enabled");

			ret = -EINVAL;

		}

		break;

	case BT_CMD_GETVAL_VDD_DIG_LDO:

		if ((bt_power_pdata->bt_vdd_dig) &&

				(bt_power_pdata->bt_vdd_dig->is_enabled) &&

				(regulator_is_enabled(

					bt_power_pdata->bt_vdd_dig->reg))) {

			value = (int)regulator_get_voltage(

				bt_power_pdata->bt_vdd_dig->reg);

			BT_PWR_ERR("GET_VDD_DIG_LDO(%d) value(%d)",

				bt_power_pdata->bt_vdd_dig, value);

			ret = value;

		} else {

			BT_PWR_ERR("VDD-DIG-LDO not configured/enabled");

			ret = -EINVAL;

		}

		break;

	case BT_CMD_GETVAL_VDD_RFA1_LDO:

		if ((bt_power_pdata->bt_vdd_rfa1) &&

				(bt_power_pdata->bt_vdd_rfa1->is_enabled) &&

				(regulator_is_enabled(

					bt_power_pdata->bt_vdd_rfa1->reg))) {

			value = (int)regulator_get_voltage(

				bt_power_pdata->bt_vdd_rfa1->reg);

			BT_PWR_ERR("GET_VDD_RFA1_LDO(%d) value(%d)",

				bt_power_pdata->bt_vdd_rfa1, value);

			ret = value;

		} else {

			BT_PWR_ERR("VDD-RFA1-LDO not configure/enabled");

			ret = -EINVAL;

		}

		break;

	case BT_CMD_GETVAL_VDD_RFA2_LDO:

		if ((bt_power_pdata->bt_vdd_rfa2) &&

				(bt_power_pdata->bt_vdd_rfa2->is_enabled) &&

				(regulator_is_enabled(

					bt_power_pdata->bt_vdd_rfa2->reg))) {

			value = (int)regulator_get_voltage(

				bt_power_pdata->bt_vdd_rfa2->reg);

			BT_PWR_ERR("GET_VDD_RFA2_LDO(%d) value(%d)",

				bt_power_pdata->bt_vdd_rfa2, value);

			ret = value;

		}  else  {

			BT_PWR_ERR("VDD-RFA2-LDO not configure/enabled");

			ret = -EINVAL;

		}

		break;

	default:

		return -EINVAL;

	}

include/linux/bluetooth-power.h

+14 −4
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0-only */

/*

 * Copyright (c) 2016-2019, The Linux Foundation. All rights reserved.

 * Copyright (c) 2016-2020, The Linux Foundation. All rights reserved.

 */



#ifndef __LINUX_BLUETOOTH_POWER_H
@@ -50,6 +50,10 @@ struct bt_power_clk_data { 
struct bluetooth_power_platform_data {

	/* Bluetooth reset gpio */

	int bt_gpio_sys_rst;

	/* Bluetooth sw_ctrl gpio */

	int bt_gpio_sw_ctrl;

	/* Bluetooth debug gpio */

	int bt_gpio_debug;

	struct device *slim_dev;

	/* VDDIO voltage regulator */

	struct bt_power_vreg_data *bt_vdd_io;
@@ -89,4 +93,10 @@ int get_chipset_version(void); 
#define BT_CMD_SLIM_TEST            0xbfac

#define BT_CMD_PWR_CTRL             0xbfad

#define BT_CMD_CHIPSET_VERS         0xbfae

#define BT_CMD_GETVAL_RESET_GPIO    0xbfaf

#define BT_CMD_GETVAL_SW_CTRL_GPIO  0xbfb0

#define BT_CMD_GETVAL_VDD_AON_LDO   0xbfb1

#define BT_CMD_GETVAL_VDD_DIG_LDO   0xbfb2

#define BT_CMD_GETVAL_VDD_RFA1_LDO  0xbfb3

#define BT_CMD_GETVAL_VDD_RFA2_LDO  0xbfb4

#endif /* __LINUX_BLUETOOTH_POWER_H */