From: Xinming Hu <huxm@xxxxxxxxxxx> This patch adds support for driver's internal host sleep configuration via sysfs. gpiogap and hscfgcmd sysfs commands are added for this purpose. Examples. 1. Get current gpiogap cat /sys/class/bluetooth/hci0/gpiogap 2. Set gpio as 13 and gap as 100msecs echo "0x0d64" > /sys/class/bluetooth/hci0/gpiogap 3. Download host sleep configuration to firmware. echo "1" > /sys/class/bluetooth/hci0/hscfgcmd Signed-off-by: Xinming Hu <huxm@xxxxxxxxxxx> Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx> --- drivers/bluetooth/Makefile | 1 + drivers/bluetooth/btmrvl_drv.h | 3 + drivers/bluetooth/btmrvl_main.c | 2 + drivers/bluetooth/btmrvl_sysfs.c | 121 +++++++++++++++++++++++++++++++++++++++ 4 files changed, 127 insertions(+) create mode 100644 drivers/bluetooth/btmrvl_sysfs.c diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile index 07c9cf3..d0fd0b1 100644 --- a/drivers/bluetooth/Makefile +++ b/drivers/bluetooth/Makefile @@ -26,6 +26,7 @@ obj-$(CONFIG_BT_QCA) += btqca.o btmrvl-y := btmrvl_main.o btmrvl-$(CONFIG_DEBUG_FS) += btmrvl_debugfs.o +btmrvl-y += btmrvl_sysfs.o hci_uart-y := hci_ldisc.o hci_uart-$(CONFIG_BT_HCIUART_H4) += hci_h4.o diff --git a/drivers/bluetooth/btmrvl_drv.h b/drivers/bluetooth/btmrvl_drv.h index 27a9aac..0fc0e7d 100644 --- a/drivers/bluetooth/btmrvl_drv.h +++ b/drivers/bluetooth/btmrvl_drv.h @@ -174,6 +174,9 @@ int btmrvl_prepare_command(struct btmrvl_private *priv); int btmrvl_enable_hs(struct btmrvl_private *priv); void btmrvl_firmware_dump(struct btmrvl_private *priv); +int btmrvl_sysfs_register(struct btmrvl_private *priv); +void btmrvl_sysfs_unregister(struct btmrvl_private *priv); + #ifdef CONFIG_DEBUG_FS void btmrvl_debugfs_init(struct hci_dev *hdev); void btmrvl_debugfs_remove(struct hci_dev *hdev); diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c index f2b38c8..6a8faa2 100644 --- a/drivers/bluetooth/btmrvl_main.c +++ b/drivers/bluetooth/btmrvl_main.c @@ -693,6 +693,7 @@ int btmrvl_register_hdev(struct btmrvl_private *priv) #ifdef CONFIG_DEBUG_FS btmrvl_debugfs_init(hdev); #endif + btmrvl_sysfs_register(priv); return 0; @@ -768,6 +769,7 @@ int btmrvl_remove_card(struct btmrvl_private *priv) #ifdef CONFIG_DEBUG_FS btmrvl_debugfs_remove(hdev); #endif + btmrvl_sysfs_unregister(priv); hci_unregister_dev(hdev); diff --git a/drivers/bluetooth/btmrvl_sysfs.c b/drivers/bluetooth/btmrvl_sysfs.c new file mode 100644 index 0000000..5fe6fd7 --- /dev/null +++ b/drivers/bluetooth/btmrvl_sysfs.c @@ -0,0 +1,121 @@ +/** + * Marvell Bluetooth driver: sysfs related functions + * + * Copyright (C) 2015, Marvell International Ltd. + * + * This software file (the "File") is distributed by Marvell International + * Ltd. under the terms of the GNU General Public License Version 2, June 1991 + * (the "License"). You may use, redistribute and/or modify this File in + * accordance with the terms and conditions of the License, a copy of which + * is available on the worldwide web at + * http://www.gnu.org/licenses/old-licenses/gpl-2.0.txt. + * + * THE FILE IS DISTRIBUTED AS-IS, WITHOUT WARRANTY OF ANY KIND, AND THE + * IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE + * ARE EXPRESSLY DISCLAIMED. The License provides additional details about + * this warranty disclaimer. + */ + +#include <linux/slab.h> + +#include <net/bluetooth/bluetooth.h> +#include <net/bluetooth/hci_core.h> + +#include "btmrvl_drv.h" + +static ssize_t +btmrvl_sysfs_show_hscfgcmd(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct hci_dev *hdev = container_of(dev, struct hci_dev, dev); + struct btmrvl_private *priv = hci_get_drvdata(hdev); + + return snprintf(buf, PAGE_SIZE, "%d\n", priv->btmrvl_dev.hscfgcmd); +} + +static ssize_t +btmrvl_sysfs_store_hscfgcmd(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + long ret; + u8 result; + struct hci_dev *hdev = container_of(dev, struct hci_dev, dev); + struct btmrvl_private *priv = hci_get_drvdata(hdev); + + ret = kstrtou8(buf, 10, &result); + if (ret) + return ret; + + if (!priv) + return -EINVAL; + + priv->btmrvl_dev.hscfgcmd = result; + if (priv->btmrvl_dev.hscfgcmd) { + btmrvl_prepare_command(priv); + wake_up_interruptible(&priv->main_thread.wait_q); + } + + return count; +} + +static DEVICE_ATTR(hscfgcmd, S_IRUGO | S_IWUSR, + btmrvl_sysfs_show_hscfgcmd, + btmrvl_sysfs_store_hscfgcmd); + +static ssize_t +btmrvl_sysfs_show_gpiogap(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct hci_dev *hdev = container_of(dev, struct hci_dev, dev); + struct btmrvl_private *priv = hci_get_drvdata(hdev); + + return snprintf(buf, PAGE_SIZE, "0x%x\n", priv->btmrvl_dev.gpio_gap); +} + +static ssize_t +btmrvl_sysfs_store_gpiogap(struct device *dev, struct device_attribute *attr, + const char *buf, size_t count) +{ + long ret; + u16 result; + struct hci_dev *hdev = container_of(dev, struct hci_dev, dev); + struct btmrvl_private *priv = hci_get_drvdata(hdev); + + ret = kstrtou16(buf, 10, &result); + if (ret) + return ret; + + priv->btmrvl_dev.gpio_gap = result; + return count; +} + +static DEVICE_ATTR(gpiogap, S_IRUGO | S_IWUSR, + btmrvl_sysfs_show_gpiogap, + btmrvl_sysfs_store_gpiogap); + +static struct attribute *btmrvl_dev_attrs[] = { + &dev_attr_hscfgcmd.attr, + &dev_attr_gpiogap.attr, + NULL, +}; + +static struct attribute_group btmrvl_dev_attr_group = { + .attrs = btmrvl_dev_attrs, +}; + +static const struct attribute_group *btmrvl_dev_attr_groups[] = { + &btmrvl_dev_attr_group, + NULL, +}; + +int btmrvl_sysfs_register(struct btmrvl_private *priv) +{ + return sysfs_create_groups(&priv->btmrvl_dev.hcidev->dev.kobj, + btmrvl_dev_attr_groups); +} + +void btmrvl_sysfs_unregister(struct btmrvl_private *priv) +{ + sysfs_remove_groups(&priv->btmrvl_dev.hcidev->dev.kobj, + btmrvl_dev_attr_groups); +} -- 1.8.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-bluetooth" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
