[PATCH v4 1/2] bluetooth: btmrvl: register platform specific driver
From: Amitkumar Karwar
Date: Tue Feb 16 2016 - 05:00:25 EST
From: Xinming Hu <huxm@xxxxxxxxxxx>
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 <huxm@xxxxxxxxxxx>
Signed-off-by: Amitkumar Karwar <akarwar@xxxxxxxxxxx>
---
v3: Add NULL check for 'btmrvl_plt_dev'
v4: Moved the bindings file to bindings/net/
Corrected the name of 'name' and 'compatible' properties(Rob Herring)
---
Documentation/devicetree/bindings/btmrvl.txt | 29 -----------
.../devicetree/bindings/net/marvell-bt-sd8xxx.txt | 29 +++++++++++
drivers/bluetooth/Makefile | 1 +
drivers/bluetooth/btmrvl_drv.h | 16 ++++++
drivers/bluetooth/btmrvl_main.c | 8 ++-
drivers/bluetooth/btmrvl_platform.c | 60 ++++++++++++++++++++++
6 files changed, 113 insertions(+), 30 deletions(-)
delete mode 100644 Documentation/devicetree/bindings/btmrvl.txt
create mode 100644 Documentation/devicetree/bindings/net/marvell-bt-sd8xxx.txt
create mode 100644 drivers/bluetooth/btmrvl_platform.c
diff --git a/Documentation/devicetree/bindings/btmrvl.txt b/Documentation/devicetree/bindings/btmrvl.txt
deleted file mode 100644
index 58f964b..0000000
--- a/Documentation/devicetree/bindings/btmrvl.txt
+++ /dev/null
@@ -1,29 +0,0 @@
-btmrvl
-------
-
-Required properties:
-
- - compatible : must be "btmrvl,cfgdata"
-
-Optional properties:
-
- - btmrvl,cal-data : Calibration data downloaded to the device during
- initialization. This is an array of 28 values(u8).
-
- - btmrvl,gpio-gap : gpio and gap (in msecs) combination to be
- configured.
-
-Example:
-
-GPIO pin 13 is configured as a wakeup source and GAP is set to 100 msecs
-in below example.
-
-btmrvl {
- compatible = "btmrvl,cfgdata";
-
- btmrvl,cal-data = /bits/ 8 <
- 0x37 0x01 0x1c 0x00 0xff 0xff 0xff 0xff 0x01 0x7f 0x04 0x02
- 0x00 0x00 0xba 0xce 0xc0 0xc6 0x2d 0x00 0x00 0x00 0x00 0x00
- 0x00 0x00 0xf0 0x00>;
- btmrvl,gpio-gap = <0x0d64>;
-};
diff --git a/Documentation/devicetree/bindings/net/marvell-bt-sd8xxx.txt b/Documentation/devicetree/bindings/net/marvell-bt-sd8xxx.txt
new file mode 100644
index 0000000..516b636
--- /dev/null
+++ b/Documentation/devicetree/bindings/net/marvell-bt-sd8xxx.txt
@@ -0,0 +1,29 @@
+Marvell bluetooth sdio driver
+------
+
+Required properties:
+
+ - compatible : must be "marvell,bt-sd8xxx"
+
+Optional properties:
+
+ - btmrvl,cal-data : Calibration data downloaded to the device during
+ initialization. This is an array of 28 values(u8).
+
+ - btmrvl,gpio-gap : gpio and gap (in msecs) combination to be
+ configured.
+
+Example:
+
+GPIO pin 13 and gap 100ms are configured for host wakeup, calibration
+data is also available in below example.
+
+bluetooth {
+ compatible = "marvell,bt-sd8xxx";
+
+ btmrvl,cal-data = /bits/ 8 <
+ 0x37 0x01 0x1c 0x00 0xff 0xff 0xff 0xff 0x01 0x7f 0x04 0x02
+ 0x00 0x00 0xba 0xce 0xc0 0xc6 0x2d 0x00 0x00 0x00 0x00 0x00
+ 0x00 0x00 0xf0 0x00>;
+ btmrvl,gpio-gap = <0x0d64>;
+};
diff --git a/drivers/bluetooth/Makefile b/drivers/bluetooth/Makefile
index f7cb408..d59b00b 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..34a0b61 100644
--- a/drivers/bluetooth/btmrvl_main.c
+++ b/drivers/bluetooth/btmrvl_main.c
@@ -514,7 +514,9 @@ 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 ?
+ btmrvl_plt_dev->dev.of_node : NULL;
+ if (dt_node) {
ret = of_property_read_u32(dt_node, "btmrvl,gpio-gap", &val);
if (!ret)
priv->btmrvl_dev.gpio_gap = val;
@@ -733,6 +735,8 @@ 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 +780,8 @@ 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..d2305dd
--- /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,bt-sd8xxx",
+ },
+ {},
+};
+
+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