snort: Update urls for rules download (2.9.7.0) in 'ids.cgi'

[ipfire-2.x.git] / src / patches / kernel / wandboard / imx / 0004-ARM-i.MX6-Wandboard-add-wifi-bt-rfkill-driver.patch

From adf0f7b7d7c0083dd936fe46423b89e974f8df12 Mon Sep 17 00:00:00 2001
From: Vladimir Ermakov <vooon341@gmail.com>
Date: Wed, 10 Jul 2013 03:06:54 +0400
Subject: [PATCH] ARM i.MX6 Wandboard add wifi+bt rfkill driver

BRCM WiFi module requires initialization for control gpio;
Additional provides rfkill funcs.

v2: fix wrong probe func in driver struct
v3: add imx6qdl compatible

Signed-off-by: Vladimir Ermakov <vooon341@gmail.com>
---
 arch/arm/mach-imx/devices/Kconfig       |   6 +
 arch/arm/mach-imx/devices/Makefile      |   1 +
 arch/arm/mach-imx/devices/wand-rfkill.c | 290 ++++++++++++++++++++++++++++++++
 3 files changed, 297 insertions(+)
 create mode 100644 arch/arm/mach-imx/devices/wand-rfkill.c

diff --git a/arch/arm/mach-imx/devices/Kconfig b/arch/arm/mach-imx/devices/Kconfig
index 68c74fb..a0adf75 100644
--- a/arch/arm/mach-imx/devices/Kconfig
+++ b/arch/arm/mach-imx/devices/Kconfig
@@ -85,3 +85,9 @@ config IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX
 
 config IMX_HAVE_PLATFORM_SPI_IMX
 	bool
+
+config WAND_RFKILL
+	tristate "Wandboard RF Kill support"
+	depends on SOC_IMX6Q
+	default m
+	select RFKILL
diff --git a/arch/arm/mach-imx/devices/Makefile b/arch/arm/mach-imx/devices/Makefile
index 67416fb..b2aded5 100644
--- a/arch/arm/mach-imx/devices/Makefile
+++ b/arch/arm/mach-imx/devices/Makefile
@@ -30,3 +30,4 @@ obj-$(CONFIG_IMX_HAVE_PLATFORM_MXC_W1) += platform-mxc_w1.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_SDHCI_ESDHC_IMX) += platform-sdhci-esdhc-imx.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_SPI_IMX) +=  platform-spi_imx.o
 obj-$(CONFIG_IMX_HAVE_PLATFORM_MX2_EMMA) += platform-mx2-emma.o
+obj-$(CONFIG_WAND_RFKILL) += wand-rfkill.o
diff --git a/arch/arm/mach-imx/devices/wand-rfkill.c b/arch/arm/mach-imx/devices/wand-rfkill.c
new file mode 100644
index 0000000..da7ef9f
--- /dev/null
+++ b/arch/arm/mach-imx/devices/wand-rfkill.c
@@ -0,0 +1,290 @@
+/*
+ * arch/arm/mach-imx/devices/wand-rfkill.c
+ *
+ * Copyright (C) 2013 Vladimir Ermakov <vooon341@gmail.com>
+ *
+ * based on net/rfkill/rfkill-gpio.c
+ *
+ * This software is licensed under the terms of the GNU General Public
+ * License version 2, as published by the Free Software Foundation, and
+ * may be copied, distributed, and modified under those terms.
+ *
+ * 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.
+ *
+ */
+
+#include <linux/of.h>
+#include <linux/of_gpio.h>
+#include <linux/of_device.h>
+#include <linux/pinctrl/consumer.h>
+#include <linux/platform_device.h>
+#include <linux/rfkill.h>
+#include <linux/delay.h>
+#include <linux/kernel.h>
+#include <linux/module.h>
+#include <linux/slab.h>
+
+
+struct wand_rfkill_data {
+	struct rfkill *rfkill_dev;
+	int shutdown_gpio;
+	const char *shutdown_name;
+};
+
+static int wand_rfkill_set_block(void *data, bool blocked)
+{
+	struct wand_rfkill_data *rfkill = data;
+
+	pr_debug("wandboard-rfkill: set block %d\n", blocked);
+
+	if (blocked) {
+		if (gpio_is_valid(rfkill->shutdown_gpio))
+			gpio_direction_output(rfkill->shutdown_gpio, 0);
+	} else {
+		if (gpio_is_valid(rfkill->shutdown_gpio))
+			gpio_direction_output(rfkill->shutdown_gpio, 1);
+	}
+
+	return 0;
+}
+
+static const struct rfkill_ops wand_rfkill_ops = {
+	.set_block = wand_rfkill_set_block,
+};
+
+static int wand_rfkill_wifi_probe(struct device *dev,
+		struct device_node *np,
+		struct wand_rfkill_data *rfkill)
+{
+	int ret;
+	int wl_ref_on, wl_rst_n, wl_reg_on, wl_wake, wl_host_wake;
+
+	wl_ref_on = of_get_named_gpio(np, "wifi-ref-on", 0);
+	wl_rst_n = of_get_named_gpio(np, "wifi-rst-n", 0);
+	wl_reg_on = of_get_named_gpio(np, "wifi-reg-on", 0);
+	wl_wake = of_get_named_gpio(np, "wifi-wake", 0);
+	wl_host_wake = of_get_named_gpio(np, "wifi-host-wake", 0);
+
+	if (!gpio_is_valid(wl_rst_n) || !gpio_is_valid(wl_ref_on) ||
+			!gpio_is_valid(wl_reg_on) || !gpio_is_valid(wl_wake) ||
+			!gpio_is_valid(wl_host_wake)) {
+
+		dev_err(dev, "incorrect wifi gpios (%d %d %d %d %d)\n",
+				wl_rst_n, wl_ref_on, wl_reg_on, wl_wake, wl_host_wake);
+		return -EINVAL;
+	}
+
+	dev_info(dev, "initialize wifi chip\n");
+
+	gpio_request(wl_rst_n, "wl_rst_n");
+	gpio_direction_output(wl_rst_n, 0);
+	msleep(11);
+	gpio_set_value(wl_rst_n, 1);
+
+	gpio_request(wl_ref_on, "wl_ref_on");
+	gpio_direction_output(wl_ref_on, 1);
+
+	gpio_request(wl_reg_on, "wl_reg_on");
+	gpio_direction_output(wl_reg_on, 1);
+
+	gpio_request(wl_wake, "wl_wake");
+	gpio_direction_output(wl_wake, 1);
+
+	gpio_request(wl_host_wake, "wl_host_wake");
+	gpio_direction_input(wl_host_wake);
+
+	rfkill->shutdown_name = "wifi_shutdown";
+	rfkill->shutdown_gpio = wl_wake;
+
+	rfkill->rfkill_dev = rfkill_alloc("wifi-rfkill", dev, RFKILL_TYPE_WLAN,
+			&wand_rfkill_ops, rfkill);
+	if (!rfkill->rfkill_dev) {
+		ret = -ENOMEM;
+		goto wifi_fail_free_gpio;
+	}
+
+	ret = rfkill_register(rfkill->rfkill_dev);
+	if (ret < 0)
+		goto wifi_fail_unregister;
+
+	dev_info(dev, "wifi-rfkill registered.\n");
+
+	return 0;
+
+wifi_fail_unregister:
+	rfkill_destroy(rfkill->rfkill_dev);
+wifi_fail_free_gpio:
+	if (gpio_is_valid(wl_rst_n))     gpio_free(wl_rst_n);
+	if (gpio_is_valid(wl_ref_on))    gpio_free(wl_ref_on);
+	if (gpio_is_valid(wl_reg_on))    gpio_free(wl_reg_on);
+	if (gpio_is_valid(wl_wake))      gpio_free(wl_wake);
+	if (gpio_is_valid(wl_host_wake)) gpio_free(wl_host_wake);
+
+	return ret;
+}
+
+static int wand_rfkill_bt_probe(struct device *dev,
+		struct device_node *np,
+		struct wand_rfkill_data *rfkill)
+{
+	int ret;
+	int bt_on, bt_wake, bt_host_wake;
+
+	bt_on = of_get_named_gpio(np, "bluetooth-on", 0);
+	bt_wake = of_get_named_gpio(np, "bluetooth-wake", 0);
+	bt_host_wake = of_get_named_gpio(np, "bluetooth-host-wake", 0);
+
+	if (!gpio_is_valid(bt_on) || !gpio_is_valid(bt_wake) ||
+			!gpio_is_valid(bt_host_wake)) {
+
+		dev_err(dev, "incorrect bt gpios (%d %d %d)\n",
+				bt_on, bt_wake, bt_host_wake);
+		return -EINVAL;
+	}
+
+	dev_info(dev, "initialize bluetooth chip\n");
+
+	gpio_request(bt_on, "bt_on");
+	gpio_direction_output(bt_on, 0);
+	msleep(11);
+	gpio_set_value(bt_on, 1);
+
+	gpio_request(bt_wake, "bt_wake");
+	gpio_direction_output(bt_wake, 1);
+
+	gpio_request(bt_host_wake, "bt_host_wake");
+	gpio_direction_input(bt_host_wake);
+
+	rfkill->shutdown_name = "bluetooth_shutdown";
+	rfkill->shutdown_gpio = bt_wake;
+
+	rfkill->rfkill_dev = rfkill_alloc("bluetooth-rfkill", dev, RFKILL_TYPE_BLUETOOTH,
+			&wand_rfkill_ops, rfkill);
+	if (!rfkill->rfkill_dev) {
+		ret = -ENOMEM;
+		goto bt_fail_free_gpio;
+	}
+
+	ret = rfkill_register(rfkill->rfkill_dev);
+	if (ret < 0)
+		goto bt_fail_unregister;
+
+	dev_info(dev, "bluetooth-rfkill registered.\n");
+
+	return 0;
+
+bt_fail_unregister:
+	rfkill_destroy(rfkill->rfkill_dev);
+bt_fail_free_gpio:
+	if (gpio_is_valid(bt_on))        gpio_free(bt_on);
+	if (gpio_is_valid(bt_wake))      gpio_free(bt_wake);
+	if (gpio_is_valid(bt_host_wake)) gpio_free(bt_host_wake);
+
+	return ret;
+}
+
+static int wand_rfkill_probe(struct platform_device *pdev)
+{
+	struct wand_rfkill_data *rfkill;
+	struct pinctrl *pinctrl;
+	int ret;
+
+	dev_info(&pdev->dev, "Wandboard rfkill initialization\n");
+
+	if (!pdev->dev.of_node) {
+		dev_err(&pdev->dev, "no device tree node\n");
+		return -ENODEV;
+	}
+
+	rfkill = kzalloc(sizeof(*rfkill) * 2, GFP_KERNEL);
+	if (!rfkill)
+		return -ENOMEM;
+
+	pinctrl = devm_pinctrl_get_select_default(&pdev->dev);
+	if (IS_ERR(pinctrl)) {
+		int ret = PTR_ERR(pinctrl);
+		dev_err(&pdev->dev, "failed to get default pinctrl: %d\n", ret);
+		return ret;
+	}
+
+	/* setup WiFi */
+	ret = wand_rfkill_wifi_probe(&pdev->dev, pdev->dev.of_node, &rfkill[0]);
+	if (ret < 0)
+		goto fail_free_rfkill;
+
+	/* setup bluetooth */
+	ret = wand_rfkill_bt_probe(&pdev->dev, pdev->dev.of_node, &rfkill[1]);
+	if (ret < 0)
+		goto fail_unregister_wifi;
+
+	platform_set_drvdata(pdev, rfkill);
+
+	return 0;
+
+fail_unregister_wifi:
+	if (rfkill[1].rfkill_dev) {
+		rfkill_unregister(rfkill[1].rfkill_dev);
+		rfkill_destroy(rfkill[1].rfkill_dev);
+	}
+
+	/* TODO free gpio */
+
+fail_free_rfkill:
+	kfree(rfkill);
+
+	return ret;
+}
+
+static int wand_rfkill_remove(struct platform_device *pdev)
+{
+	struct wand_rfkill_data *rfkill = platform_get_drvdata(pdev);
+
+	dev_info(&pdev->dev, "Module unloading\n");
+
+	if (!rfkill)
+		return 0;
+
+	/* WiFi */
+	if (gpio_is_valid(rfkill[0].shutdown_gpio))
+		gpio_free(rfkill[0].shutdown_gpio);
+
+	rfkill_unregister(rfkill[0].rfkill_dev);
+	rfkill_destroy(rfkill[0].rfkill_dev);
+
+	/* Bt */
+	if (gpio_is_valid(rfkill[1].shutdown_gpio))
+		gpio_free(rfkill[1].shutdown_gpio);
+
+	rfkill_unregister(rfkill[1].rfkill_dev);
+	rfkill_destroy(rfkill[1].rfkill_dev);
+
+	kfree(rfkill);
+
+	return 0;
+}
+
+static struct of_device_id wand_rfkill_match[] = {
+	{ .compatible = "wand,imx6q-wandboard-rfkill", },
+	{ .compatible = "wand,imx6dl-wandboard-rfkill", },
+	{ .compatible = "wand,imx6qdl-wandboard-rfkill", },
+	{}
+};
+
+static struct platform_driver wand_rfkill_driver = {
+	.driver = {
+		.name = "wandboard-rfkill",
+		.owner = THIS_MODULE,
+		.of_match_table = of_match_ptr(wand_rfkill_match),
+	},
+	.probe = wand_rfkill_probe,
+	.remove = wand_rfkill_remove
+};
+
+module_platform_driver(wand_rfkill_driver);
+
+MODULE_AUTHOR("Vladimir Ermakov <vooon341@gmail.com>");
+MODULE_DESCRIPTION("Wandboard rfkill driver");
+MODULE_LICENSE("GPL v2");
-- 
1.8.4.rc3