#include <linux/i2c/mpr.h>
#include <linux/fsl_devices.h>
#include <linux/ahci_platform.h>
+#include <linux/regulator/consumer.h>
#include <mach/common.h>
#include <mach/hardware.h>
#include <mach/imx-uart.h>
#include <mach/iomux-mx53.h>
#include <mach/ahci_sata.h>
+#include <mach/imx_rfkill.h>
#include <asm/mach-types.h>
#include <asm/mach/arch.h>
#define MX53_SMD_DCDC1V8_EN IMX_GPIO_NR(3, 1)
#define MX53_SMD_DCDC5V_BB_EN IMX_GPIO_NR(4, 14)
#define MX53_SMD_ALS_INT IMX_GPIO_NR(3, 22)
+#define MX53_SMD_BT_RESET IMX_GPIO_NR(3, 28)
extern int mx53_smd_init_da9052(void);
mx5_usbh1_init();
}
+static void mx53_smd_bt_reset(void)
+{
+ gpio_request(MX53_SMD_BT_RESET, "bt-reset");
+ gpio_direction_output(MX53_SMD_BT_RESET, 0);
+ /* pull down reset pin at least >5ms */
+ mdelay(6);
+ /* pull up after power supply BT */
+ gpio_set_value(MX53_SMD_BT_RESET, 1);
+ gpio_free(MX53_SMD_BT_RESET);
+}
+
+static int mx53_smd_bt_power_change(int status)
+{
+ struct regulator *wifi_bt_pwren;
+
+ wifi_bt_pwren = regulator_get(NULL, "wifi_bt");
+ if (IS_ERR(wifi_bt_pwren)) {
+ printk(KERN_ERR "%s: regulator_get error\n", __func__);
+ return -1;
+ }
+
+ if (status) {
+ regulator_enable(wifi_bt_pwren);
+ mx53_smd_bt_reset();
+ } else
+ regulator_disable(wifi_bt_pwren);
+
+ return 0;
+}
+
+static struct platform_device imx_bt_rfkill = {
+ .name = "imx_bt_rfkill",
+};
+
+static struct imx_bt_rfkill_platform_data imx_bt_rfkill_data = {
+ .power_change = mx53_smd_bt_power_change,
+};
+
static struct mxc_audio_platform_data smd_audio_data;
static int smd_sgtl5000_init(void)
gpio_direction_input(MX53_SMD_ALS_INT);
mxc_register_device(&smd_audio_device, &smd_audio_data);
+ mxc_register_device(&imx_bt_rfkill, &imx_bt_rfkill_data);
imx53_add_imx_ssi(1, &smd_ssi_pdata);
}
--- /dev/null
+/*
+ * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+/*!
+ * @file imx_bt_rfkill.c
+ *
+ * @brief This driver is implement a rfkill control interface of bluetooth
+ * chip on i.MX serial boards. Register the power regulator function and
+ * reset function in platform data.
+ */
+
+#include <linux/module.h>
+#include <linux/platform_device.h>
+#include <linux/device.h>
+#include <linux/kernel.h>
+#include <linux/suspend.h>
+#include <linux/init.h>
+#include <linux/rfkill.h>
+#include <mach/hardware.h>
+#include <mach/imx_rfkill.h>
+
+static int system_in_suspend;
+
+static int imx_bt_set_block(void *rfkdata, bool blocked)
+{
+ struct imx_bt_rfkill_platform_data *data = rfkdata;
+ int ret;
+
+ /* Bluetooth stack will reset the bluetooth chip during
+ * resume, since we keep bluetooth's power during suspend,
+ * don't let rfkill to actually reset the chip. */
+ if (system_in_suspend)
+ return 0;
+
+ pr_info("rfkill: Bluetooth RF turn %s\n", blocked ? "off" : "on");
+ if (!blocked)
+ ret = data->power_change(1);
+ else
+ ret = data->power_change(0);
+
+ return ret;
+}
+
+static const struct rfkill_ops imx_bt_rfkill_ops = {
+ .set_block = imx_bt_set_block,
+};
+
+static int imx_bt_power_event(struct notifier_block *this,
+ unsigned long event, void *dummy)
+{
+ switch (event) {
+ case PM_SUSPEND_PREPARE:
+ system_in_suspend = 1;
+ /* going to suspend, don't reset chip */
+ break;
+ case PM_POST_SUSPEND:
+ system_in_suspend = 0;
+ /* System is resume, can reset chip */
+ break;
+ default:
+ break;
+ }
+ return NOTIFY_DONE;
+}
+
+static struct notifier_block imx_bt_power_notifier = {
+ .notifier_call = imx_bt_power_event,
+};
+
+static int imx_bt_rfkill_probe(struct platform_device *dev)
+{
+ int rc;
+ struct rfkill *rfk;
+
+ struct imx_bt_rfkill_platform_data *data = dev->dev.platform_data;
+
+ if (data->power_change == NULL) {
+ rc = -EINVAL;
+ dev_err(&dev->dev, "no power_change function\n");
+ goto error_check_func;
+ }
+
+ rc = register_pm_notifier(&imx_bt_power_notifier);
+ if (rc)
+ goto error_check_func;
+
+ rfk = rfkill_alloc("imx-bt", &dev->dev, RFKILL_TYPE_BLUETOOTH,
+ &imx_bt_rfkill_ops, data);
+
+ if (!rfk) {
+ rc = -ENOMEM;
+ goto error_rfk_alloc;
+ }
+
+ rc = rfkill_register(rfk);
+ if (rc)
+ goto error_rfkill;
+
+ platform_set_drvdata(dev, rfk);
+ printk(KERN_INFO "imx_bt_rfkill driver success loaded\n");
+ return 0;
+
+error_rfkill:
+ rfkill_destroy(rfk);
+error_rfk_alloc:
+error_check_func:
+ return rc;
+}
+
+static int __devexit imx_bt_rfkill_remove(struct platform_device *dev)
+{
+ struct imx_bt_rfkill_platform_data *data = dev->dev.platform_data;
+ struct rfkill *rfk = platform_get_drvdata(dev);
+
+ platform_set_drvdata(dev, NULL);
+
+ if (rfk) {
+ rfkill_unregister(rfk);
+ rfkill_destroy(rfk);
+ }
+
+ data->power_change(0);
+
+ return 0;
+}
+
+static struct platform_driver imx_bt_rfkill_drv = {
+ .driver = {
+ .name = "imx_bt_rfkill",
+ },
+
+ .probe = imx_bt_rfkill_probe,
+ .remove = __devexit_p(imx_bt_rfkill_remove),
+};
+
+static int __init imx_bt_rfkill_init(void)
+{
+ return platform_driver_register(&imx_bt_rfkill_drv);
+}
+
+module_init(imx_bt_rfkill_init);
+
+static void __exit imx_bt_rfkill_exit(void)
+{
+ platform_driver_unregister(&imx_bt_rfkill_drv);
+}
+
+module_exit(imx_bt_rfkill_exit);
+
+MODULE_LICENSE("GPL");
+MODULE_AUTHOR("Freescale Semiconductor, Inc.");
+MODULE_DESCRIPTION("RFKill control interface of BT on MX53 SMD");
--- /dev/null
+/*
+ * Copyright (C) 2011 Freescale Semiconductor, Inc. All Rights Reserved.
+ */
+
+/*
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+
+ * You should have received a copy of the GNU General Public License along
+ * with this program; if not, write to the Free Software Foundation, Inc.,
+ * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
+ */
+
+#ifndef IMX_RFKILL_H
+#define IMX_RFKILL_H
+struct imx_bt_rfkill_platform_data {
+ int (*power_change) (int status);
+};
+
+#endif
projects / karo-tx-linux.git / commitdiff