From: Xinming Hu <[email protected]>
Platform device and driver provide easy way to
interact with device-tree-enabled system.
This patch registers platform driver and reorganise
existing device tree specific code.
Signed-off-by: Xinming Hu <[email protected]>
Signed-off-by: Amitkumar Karwar <[email protected]>
---
Documentation/devicetree/bindings/btmrvl.txt | 8 ++--
drivers/bluetooth/Makefile | 1 +
drivers/bluetooth/btmrvl_drv.h | 16 ++++++++
drivers/bluetooth/btmrvl_main.c | 7 +++-
drivers/bluetooth/btmrvl_platform.c | 60 ++++++++++++++++++++++++++++
5 files changed, 87 insertions(+), 5 deletions(-)
create mode 100644 drivers/bluetooth/btmrvl_platform.c
diff --git a/Documentation/devicetree/bindings/btmrvl.txt b/Documentation/devicetree/bindings/btmrvl.txt
index 58f964b..25b804b 100644
--- a/Documentation/devicetree/bindings/btmrvl.txt
+++ b/Documentation/devicetree/bindings/btmrvl.txt
@@ -3,7 +3,7 @@ btmrvl
Required properties:
- - compatible : must be "btmrvl,cfgdata"
+ - compatible : must be "marvell,btmrvl"
Optional properties:
@@ -15,11 +15,11 @@ Optional properties:
Example:
-GPIO pin 13 is configured as a wakeup source and GAP is set to 100 msecs
-in below example.
+GPIO pin 13 and gap 100ms are configured for host wakeup, calibration
+data is also available in below example.
btmrvl {
- compatible = "btmrvl,cfgdata";
+ compatible = "marvell,btmrvl";
btmrvl,cal-data = /bits/ 8 <
0x37 0x01 0x1c 0x00 0xff 0xff 0xff 0xff 0x01 0x7f 0x04 0x02
diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile
index 07c9cf3..9bc3828 100644
--- a/drivers/bluetooth/Makefile
+++ b/drivers/bluetooth/Makefile
@@ -25,6 +25,7 @@ obj-$(CONFIG_BT_RTL) += btrtl.o
obj-$(CONFIG_BT_QCA) += btqca.o
btmrvl-y := btmrvl_main.o
+btmrvl-y += btmrvl_platform.o
btmrvl-$(CONFIG_DEBUG_FS) += btmrvl_debugfs.o
hci_uart-y := hci_ldisc.o
diff --git a/drivers/bluetooth/btmrvl_drv.h b/drivers/bluetooth/btmrvl_drv.h
index 0590473..de6309b 100644
--- a/drivers/bluetooth/btmrvl_drv.h
+++ b/drivers/bluetooth/btmrvl_drv.h
@@ -22,8 +22,22 @@
#include <linux/kthread.h>
#include <linux/bitops.h>
#include <linux/slab.h>
+#include <linux/err.h>
+#include <linux/gpio.h>
+#include <linux/gfp.h>
+#include <linux/interrupt.h>
+#include <linux/io.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/of_platform.h>
+#include <linux/platform_device.h>
+#include <linux/pm_runtime.h>
#include <net/bluetooth/bluetooth.h>
+extern struct platform_device *btmrvl_plt_dev;
+
#define BTM_HEADER_LEN 4
#define BTM_UPLD_SIZE 2312
@@ -174,6 +188,8 @@ int btmrvl_enable_ps(struct btmrvl_private *priv);
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_platform_drv_init(void);
+void btmrvl_platform_drv_exit(void);
#ifdef CONFIG_DEBUG_FS
void btmrvl_debugfs_init(struct hci_dev *hdev);
diff --git a/drivers/bluetooth/btmrvl_main.c b/drivers/bluetooth/btmrvl_main.c
index f25a825..3604894 100644
--- a/drivers/bluetooth/btmrvl_main.c
+++ b/drivers/bluetooth/btmrvl_main.c
@@ -514,7 +514,8 @@ static int btmrvl_check_device_tree(struct btmrvl_private *priv)
int ret;
u32 val;
- for_each_compatible_node(dt_node, NULL, "btmrvl,cfgdata") {
+ dt_node = btmrvl_plt_dev->dev.of_node;
+ if (dt_node) {
ret = of_property_read_u32(dt_node, "btmrvl,gpio-gap", &val);
if (!ret)
priv->btmrvl_dev.gpio_gap = val;
@@ -733,6 +734,8 @@ struct btmrvl_private *btmrvl_add_card(void *card)
goto err_adapter;
}
+ btmrvl_platform_drv_init();
+
btmrvl_init_adapter(priv);
BT_DBG("Starting kthread...");
@@ -776,6 +779,8 @@ int btmrvl_remove_card(struct btmrvl_private *priv)
btmrvl_debugfs_remove(hdev);
#endif
+ btmrvl_platform_drv_exit();
+
hci_unregister_dev(hdev);
hci_free_dev(hdev);
diff --git a/drivers/bluetooth/btmrvl_platform.c b/drivers/bluetooth/btmrvl_platform.c
new file mode 100644
index 0000000..4e91d27
--- /dev/null
+++ b/drivers/bluetooth/btmrvl_platform.c
@@ -0,0 +1,60 @@
+/* Marvell Bluetooth driver: platform specific driver
+ *
+ * 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 "btmrvl_drv.h"
+
+struct platform_device *btmrvl_plt_dev;
+
+static int btmrvl_plt_probe(struct platform_device *pdev)
+{
+ btmrvl_plt_dev = pdev;
+ return 0;
+}
+
+static int btmrvl_plt_remove(struct platform_device *pdev)
+{
+ btmrvl_plt_dev = NULL;
+ return 0;
+}
+
+static const struct of_device_id btmrvl_dt_match[] = {
+ {
+ .compatible = "marvell,btmrvl",
+ },
+ {},
+};
+
+MODULE_DEVICE_TABLE(of, btmrvl_dt_match);
+
+static struct platform_driver btmrvl_platform_driver = {
+ .probe = btmrvl_plt_probe,
+ .remove = btmrvl_plt_remove,
+ .driver = {
+ .name = "btmrvl_plt",
+ .of_match_table = btmrvl_dt_match,
+ }
+};
+
+int btmrvl_platform_drv_init(void)
+{
+ return platform_driver_register(&btmrvl_platform_driver);
+}
+
+void btmrvl_platform_drv_exit(void)
+{
+ platform_driver_unregister(&btmrvl_platform_driver);
+}
--
1.8.1.4
From: Xinming Hu <[email protected]>
This patch implements a framework for board specific wakeup.
driver parse irq/gpio number from device tree, corresponding
resources will be allocated, and used for host suspend/resume.
Device tree binding file is also updated in the patch.
Signed-off-by: Xinming Hu <[email protected]>
Signed-off-by: Amitkumar Karwar <[email protected]>
---
v2: Fixed build error reported by kbuild test robot
drivers/bluetooth/btmrvl_platform.c:141:22: error:
'btmrvl_plt_pm_ops' undeclared here (not in a function)
---
Documentation/devicetree/bindings/btmrvl.txt | 17 ++++-
drivers/bluetooth/btmrvl_platform.c | 95 ++++++++++++++++++++++++++++
2 files changed, 110 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/btmrvl.txt b/Documentation/devicetree/bindings/btmrvl.txt
index 25b804b..887c7ff 100644
--- a/Documentation/devicetree/bindings/btmrvl.txt
+++ b/Documentation/devicetree/bindings/btmrvl.txt
@@ -12,11 +12,19 @@ Optional properties:
- btmrvl,gpio-gap : gpio and gap (in msecs) combination to be
configured.
+ - interrupt-parent: phandle of the parent interrupt controller
+ - interrupts : interrupt number to the cpu
+ - gpios: specify GPIO respectively. gpio here is board specific pin.
+ while above gpio-gap represents the device side pin used to
+ wakeup host.
+ - pinctrl-names : a pinctrl state named "default" must be defined
+ - pinctrl-0 : pin control group to be used for this controller
Example:
-GPIO pin 13 and gap 100ms are configured for host wakeup, calibration
-data is also available in below example.
+GPIO pin 119 and gap 100ms are configured for host wakeup,
+pin 13 is configured so that firmware can wakeup host using this device side
+pin, calibration data is also available in below example.
btmrvl {
compatible = "marvell,btmrvl";
@@ -26,4 +34,9 @@ btmrvl {
0x00 0x00 0xba 0xce 0xc0 0xc6 0x2d 0x00 0x00 0x00 0x00 0x00
0x00 0x00 0xf0 0x00>;
btmrvl,gpio-gap = <0x0d64>;
+ interrupt-parent = <&pio>;
+ interrupts = <119 IRQ_TYPE_LEVEL_LOW>;
+ gpios = <&pio 119 GPIO_ACTIVE_HIGH>;
+ pinctrl-names = "default";
+ pinctrl-0 = <&wake_pins>;
};
diff --git a/drivers/bluetooth/btmrvl_platform.c b/drivers/bluetooth/btmrvl_platform.c
index 4e91d27..6f64922 100644
--- a/drivers/bluetooth/btmrvl_platform.c
+++ b/drivers/bluetooth/btmrvl_platform.c
@@ -19,9 +19,63 @@
struct platform_device *btmrvl_plt_dev;
+struct btmrvl_wake_dev {
+ struct device *dev;
+ int irq_bt;
+ bool wake_by_bt;
+};
+
+static irqreturn_t btmrvl_wake_irq_bt(int irq, void *priv)
+{
+ struct btmrvl_wake_dev *ctx = priv;
+
+ if (ctx->irq_bt >= 0) {
+ ctx->wake_by_bt = true;
+ disable_irq_nosync(ctx->irq_bt);
+ }
+
+ return IRQ_HANDLED;
+}
+
static int btmrvl_plt_probe(struct platform_device *pdev)
{
+ int ret;
+ struct btmrvl_wake_dev *ctx;
+ int gpio;
+
btmrvl_plt_dev = pdev;
+
+ ctx = devm_kzalloc(&pdev->dev, sizeof(*ctx), GFP_KERNEL);
+ if (!ctx)
+ return -ENOMEM;
+
+ ctx->dev = &pdev->dev;
+ ctx->irq_bt = platform_get_irq(pdev, 0);
+ if (ctx->irq_bt < 0)
+ dev_err(&pdev->dev, "Failed to get irq_bt\n");
+
+ gpio = of_get_gpio(pdev->dev.of_node, 0);
+ if (gpio_is_valid(gpio))
+ gpio_direction_input(gpio);
+ else
+ dev_err(&pdev->dev, "gpio bt is invalid\n");
+
+ if (ctx->irq_bt >= 0) {
+ ret = devm_request_irq(&pdev->dev, ctx->irq_bt,
+ btmrvl_wake_irq_bt,
+ IRQF_TRIGGER_LOW,
+ "bt_wake", ctx);
+ if (ret) {
+ dev_err(&pdev->dev,
+ "Failed to request irq_bt %d (%d)\n",
+ ctx->irq_bt, ret);
+ return -EINVAL;
+ }
+ disable_irq(ctx->irq_bt);
+ }
+
+ platform_set_drvdata(pdev, ctx);
+
return 0;
}
@@ -31,6 +85,44 @@ static int btmrvl_plt_remove(struct platform_device *pdev)
return 0;
}
+#ifdef CONFIG_PM_SLEEP
+static int btmrvl_plt_suspend(struct device *dev)
+{
+ struct btmrvl_wake_dev *ctx = dev_get_drvdata(dev);
+ int ret;
+
+ if (ctx->irq_bt >= 0) {
+ ctx->wake_by_bt = false;
+ enable_irq(ctx->irq_bt);
+ ret = enable_irq_wake(ctx->irq_bt);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static int btmrvl_plt_resume(struct device *dev)
+{
+ struct btmrvl_wake_dev *ctx = dev_get_drvdata(dev);
+ int ret;
+
+ if (ctx->irq_bt >= 0) {
+ ret = disable_irq_wake(ctx->irq_bt);
+ if (!ctx->wake_by_bt)
+ disable_irq(ctx->irq_bt);
+ if (ret)
+ return ret;
+ }
+
+ return 0;
+}
+
+static const struct dev_pm_ops btmrvl_plt_pm_ops = {
+ SET_SYSTEM_SLEEP_PM_OPS(btmrvl_plt_suspend, btmrvl_plt_resume)
+};
+#endif /* CONFIG_PM_SLEEP */
+
static const struct of_device_id btmrvl_dt_match[] = {
{
.compatible = "marvell,btmrvl",
@@ -46,6 +138,9 @@ static struct platform_driver btmrvl_platform_driver = {
.driver = {
.name = "btmrvl_plt",
.of_match_table = btmrvl_dt_match,
+#ifdef CONFIG_PM_SLEEP
+ .pm = &btmrvl_plt_pm_ops,
+#endif
}
};
--
1.8.1.4