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From a96d158a5e2e8d0f6dc73e0d5ae90c6c02b78fef Mon Sep 17 00:00:00 2001
From: Bob Copeland <me@bobcopeland.com>
Date: Sun, 7 Jun 2009 16:31:23 -0400
Subject: [PATCH] msm: add platform driver for sdio-based wifi
Add a platform device driver for the msm_wifi platform device. The
driver initializes the gpios to power the device for subsequent
probing by the SDIO bus.
Signed-off-by: Bob Copeland <me@bobcopeland.com>
---
arch/arm/mach-msm/Kconfig | 5 ++
arch/arm/mach-msm/Makefile | 2 +
arch/arm/mach-msm/msm_wifi.c | 84 ++++++++++++++++++++++++++++++++++++++++++
3 files changed, 91 insertions(+), 0 deletions(-)
create mode 100644 arch/arm/mach-msm/msm_wifi.c
diff --git a/arch/arm/mach-msm/Kconfig b/arch/arm/mach-msm/Kconfig
index 176cb73..74be8cd 100644
--- a/arch/arm/mach-msm/Kconfig
+++ b/arch/arm/mach-msm/Kconfig
@@ -78,6 +78,11 @@ config TROUT_BATTCHG
default y
bool "Trout battery / charger driver"
+config TROUT_WIFI
+ depends on ARCH_MSM
+ default m
+ tristate "Trout Wifi Gpio driver (rfkill)"
+
config HTC_PWRSINK
depends on MSM_SMD
default y
diff --git a/arch/arm/mach-msm/Makefile b/arch/arm/mach-msm/Makefile
index 9371f99..fb9954a 100644
--- a/arch/arm/mach-msm/Makefile
+++ b/arch/arm/mach-msm/Makefile
@@ -36,3 +36,5 @@ obj-$(CONFIG_TROUT_BATTCHG) += htc_battery.o
obj-$(CONFIG_HTC_PWRSINK) += htc_pwrsink.o
obj-$(CONFIG_HTC_HEADSET) += htc_headset.o
+
+obj-$(CONFIG_TROUT_WIFI) += msm_wifi.o
diff --git a/arch/arm/mach-msm/msm_wifi.c b/arch/arm/mach-msm/msm_wifi.c
new file mode 100644
index 0000000..501ed45
--- /dev/null
+++ b/arch/arm/mach-msm/msm_wifi.c
@@ -0,0 +1,84 @@
+/*
+ * platform driver for msm_wifi device
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ *
+ * 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 St, Fifth Floor, Boston, MA
+ * 02110-1301 USA
+ *
+ * Copyright (C) 2008 Google Inc
+ */
+#include <linux/platform_device.h>
+#include <linux/wifi_tiwlan.h>
+
+static int wifi_probe(struct platform_device *pdev)
+{
+ struct wifi_platform_data *wifi_ctrl =
+ (struct wifi_platform_data *)(pdev->dev.platform_data);
+
+ printk(KERN_DEBUG "wifi probe start\n");
+
+ if (!wifi_ctrl)
+ return -ENODEV;
+
+ if (wifi_ctrl->set_power)
+ wifi_ctrl->set_power(1); /* Power On */
+ if (wifi_ctrl->set_reset)
+ wifi_ctrl->set_reset(0); /* Reset clear */
+ if (wifi_ctrl->set_carddetect)
+ wifi_ctrl->set_carddetect(1); /* CardDetect (0->1) */
+
+ printk(KERN_DEBUG "wifi probe done\n");
+ return 0;
+}
+
+static int wifi_remove(struct platform_device *pdev)
+{
+ struct wifi_platform_data *wifi_ctrl =
+ (struct wifi_platform_data *)(pdev->dev.platform_data);
+
+ printk(KERN_DEBUG "wifi remove start\n");
+ if (!wifi_ctrl)
+ return -ENODEV;
+
+ if (wifi_ctrl->set_carddetect)
+ wifi_ctrl->set_carddetect(0); /* CardDetect (1->0) */
+ if (wifi_ctrl->set_reset)
+ wifi_ctrl->set_reset(1); /* Reset active */
+ if (wifi_ctrl->set_power)
+ wifi_ctrl->set_power(0); /* Power Off */
+
+ printk(KERN_DEBUG "wifi remove end\n");
+ return 0;
+}
+
+static struct platform_driver wifi_device = {
+ .probe = wifi_probe,
+ .remove = wifi_remove,
+ .driver = {
+ .name = "msm_wifi",
+ },
+};
+
+static int __init msm_wifi_sdio_init(void)
+{
+ return platform_driver_register(&wifi_device);
+}
+
+static void __exit msm_wifi_sdio_exit(void)
+{
+ platform_driver_unregister(&wifi_device);
+}
+
+module_init(msm_wifi_sdio_init);
+module_exit(msm_wifi_sdio_exit);
+MODULE_LICENSE("GPL");
--
1.6.2.5
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