Add out of band sleep support to bluetooth driver
This change adds out of band sleep support to bluetooth power driver. This feature will be enabled when macro CONFIG_MSM_BT_OOBS is defined. Change-Id: I74b231956ad0884528b17720cbfa3639281af9a3
Bu işleme şunda yer alıyor:
Balakrishna Godavarthi
@@ -7,6 +7,7 @@
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#ifndef __LINUX_BLUETOOTH_POWER_H
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#define __LINUX_BLUETOOTH_POWER_H
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#include <linux/cdev.h>
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#include <linux/types.h>
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#include <linux/mailbox_client.h>
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#include <linux/mailbox/qmp.h>
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@@ -58,6 +59,11 @@ struct btpower_platform_data {
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int wl_gpio_sys_rst; /* Wlan reset gpio */
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int bt_gpio_sw_ctrl; /* Bluetooth sw_ctrl gpio */
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int bt_gpio_debug; /* Bluetooth debug gpio */
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#ifdef CONFIG_MSM_BT_OOBS
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int bt_gpio_dev_wake; /* Bluetooth bt_wake */
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int bt_gpio_host_wake; /* Bluetooth bt_host_wake */
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int irq; /* Bluetooth host_wake IRQ */
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#endif
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int xo_gpio_clk; /* XO clock gpio*/
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struct device *slim_dev;
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struct bt_power_vreg_data *vreg_info; /* VDDIO voltage regulator */
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@@ -68,6 +74,10 @@ struct btpower_platform_data {
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struct mbox_client mbox_client_data;
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struct mbox_chan *mbox_chan;
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const char *vreg_ipa;
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#ifdef CONFIG_MSM_BT_OOBS
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struct file *reffilp_obs;
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struct task_struct *reftask_obs;
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#endif
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};
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int btpower_register_slimdev(struct device *dev);
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@@ -82,4 +92,9 @@ int btpower_aop_mbox_init(struct btpower_platform_data *pdata);
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#define BT_CMD_GETVAL_POWER_SRCS 0xbfb1
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#define BT_CMD_SET_IPA_TCS_INFO 0xbfc0
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#ifdef CONFIG_MSM_BT_OOBS
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#define BT_CMD_OBS_SIGNAL_TASK 0xbfd0
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#define BT_CMD_OBS_VOTE_CLOCK 0xbfd1
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#endif
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#endif /* __LINUX_BLUETOOTH_POWER_H */
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121
pwr/btpower.c
121
pwr/btpower.c
@@ -227,6 +227,42 @@ static int bt_major;
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static int soc_id;
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static bool probe_finished;
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#ifdef CONFIG_MSM_BT_OOBS
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static void btpower_uart_transport_locked(struct btpower_platform_data *drvdata,
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bool locked)
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{
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pr_debug("%s: %s\n", __func__, (locked ? "busy" : "idle"));
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}
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static irqreturn_t btpower_host_wake_isr(int irq, void *data)
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{
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struct btpower_platform_data *drvdata = data;
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int host_waking = gpio_get_value(drvdata->bt_gpio_host_wake);
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struct kernel_siginfo siginfo;
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int rc = 0;
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pr_debug("%s: bt-hostwake-gpio(%d) IRQ(%d) value(%d)\n", __func__,
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drvdata->bt_gpio_host_wake, drvdata->irq, host_waking);
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if (drvdata->reftask_obs == NULL) {
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pr_info("%s: ignore BT-HOSTWAKE IRQ\n", __func__);
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return IRQ_HANDLED;
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}
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// Sending signal to HAL layer
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memset(&siginfo, 0, sizeof(siginfo));
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siginfo.si_signo = SIGIO;
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siginfo.si_code = SI_QUEUE;
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siginfo.si_int = host_waking;
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rc = send_sig_info(siginfo.si_signo, &siginfo, drvdata->reftask_obs);
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if (rc < 0) {
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pr_err("%s: failed (%d) to send SIG to HAL(%d)\n", __func__,
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rc, drvdata->reftask_obs->pid);
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}
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return IRQ_HANDLED;
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}
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#endif
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static int bt_vreg_enable(struct bt_power_vreg_data *vreg)
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{
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int rc = 0;
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@@ -420,6 +456,47 @@ retry_gpio_req:
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gpio_free(xo_clk_gpio);
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}
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#ifdef CONFIG_MSM_BT_OOBS
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void bt_configure_wakeup_gpios(int on)
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{
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int bt_gpio_dev_wake = bt_power_pdata->bt_gpio_dev_wake;
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int bt_host_wake_gpio = bt_power_pdata->bt_gpio_host_wake;
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int rc;
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if (on) {
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if (gpio_is_valid(bt_gpio_dev_wake)) {
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gpio_set_value(bt_gpio_dev_wake, 1);
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pr_debug("%s: BT-ON asserting BT_WAKE(%d)\n", __func__,
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bt_gpio_dev_wake);
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}
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if (gpio_is_valid(bt_host_wake_gpio)) {
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bt_power_pdata->irq = gpio_to_irq(bt_host_wake_gpio);
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pr_debug("%s: BT-ON bt-host_wake-gpio(%d) IRQ(%d)\n",
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__func__, bt_host_wake_gpio, bt_power_pdata->irq);
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rc = request_irq(bt_power_pdata->irq,
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btpower_host_wake_isr,
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IRQF_TRIGGER_FALLING |
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IRQF_TRIGGER_RISING,
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"btpower_hostwake_isr", bt_power_pdata);
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if (rc)
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pr_err("%s: unable to request IRQ %d (%d)\n",
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__func__, bt_host_wake_gpio, rc);
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}
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} else {
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if (gpio_is_valid(bt_host_wake_gpio)) {
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pr_debug("%s: BT-OFF bt-hostwake-gpio(%d) IRQ(%d) value(%d)\n",
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__func__, bt_host_wake_gpio, bt_power_pdata->irq,
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gpio_get_value(bt_host_wake_gpio));
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free_irq(bt_power_pdata->irq, bt_power_pdata);
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}
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if (gpio_is_valid(bt_gpio_dev_wake))
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gpio_set_value(bt_gpio_dev_wake, 0);
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}
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}
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#endif
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static int bt_configure_gpios(int on)
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{
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int rc = 0;
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@@ -522,6 +599,9 @@ static int bt_configure_gpios(int on)
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btpower_set_xo_clk_gpio_state(false);
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}
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msleep(50);
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#ifdef CONFIG_MSM_BT_OOBS
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bt_configure_wakeup_gpios(on);
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#endif
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/* Check if SW_CTRL is asserted */
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if (bt_sw_ctrl_gpio >= 0) {
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rc = gpio_direction_input(bt_sw_ctrl_gpio);
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@@ -555,6 +635,9 @@ static int bt_configure_gpios(int on)
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bt_power_src_status[BT_SW_CTRL_GPIO]);
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}
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} else {
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#ifdef CONFIG_MSM_BT_OOBS
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bt_configure_wakeup_gpios(on);
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#endif
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gpio_set_value(bt_reset_gpio, 0);
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msleep(100);
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pr_info("BT-OFF:bt-reset-gpio(%d) value(%d)\n",
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@@ -934,6 +1017,22 @@ static int bt_power_populate_dt_pinfo(struct platform_device *pdev)
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if (rc < 0)
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pr_warn("%s: clock not provided in device tree\n",
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__func__);
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#ifdef CONFIG_MSM_BT_OOBS
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bt_power_pdata->bt_gpio_dev_wake =
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of_get_named_gpio(pdev->dev.of_node,
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"qcom,btwake_gpio", 0);
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if (bt_power_pdata->bt_gpio_dev_wake < 0)
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pr_warn("%s: btwake-gpio not provided in device tree\n",
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__func__);
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bt_power_pdata->bt_gpio_host_wake =
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of_get_named_gpio(pdev->dev.of_node,
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"qcom,bthostwake_gpio", 0);
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if (bt_power_pdata->bt_gpio_host_wake < 0)
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pr_warn("%s: bthostwake_gpio not provided in device tree\n",
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__func__);
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#endif
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}
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bt_power_pdata->bt_power_setup = bluetooth_power;
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@@ -1081,6 +1180,28 @@ static long bt_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
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}
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switch (cmd) {
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#ifdef CONFIG_MSM_BT_OOBS
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case BT_CMD_OBS_SIGNAL_TASK:
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bt_power_pdata->reffilp_obs = file;
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bt_power_pdata->reftask_obs = get_current();
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pr_info("%s: BT_CMD_OBS_SIGNAL_TASK tid %d filp %pK\n",
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__func__, bt_power_pdata->reftask_obs->pid, file);
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break;
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case BT_CMD_OBS_VOTE_CLOCK:
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if (!gpio_is_valid(bt_power_pdata->bt_gpio_dev_wake)) {
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pr_warn("%s: BT_CMD_OBS_VOTE_CLOCK bt_dev_wake_n(%d) not configured\n",
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__func__, bt_power_pdata->bt_gpio_dev_wake);
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return -EIO;
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}
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pwr_cntrl = (int)arg;
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btpower_uart_transport_locked(bt_power_pdata, (pwr_cntrl == 1 ? true :
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false));
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gpio_set_value(bt_power_pdata->bt_gpio_dev_wake, pwr_cntrl);
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pr_debug("%s: BT_CMD_OBS_VOTE_CLOCK cntrl(%d) %s\n", __func__,
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pwr_cntrl, gpio_get_value(bt_power_pdata->bt_gpio_dev_wake) ?
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"Assert" : "Deassert");
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break;
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#endif
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case BT_CMD_SLIM_TEST:
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#if (defined CONFIG_BT_SLIM)
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if (!bt_power_pdata->slim_dev) {
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