ARM: H1940: Convert h1940 bluetooth driver to rfkill

Better using standard interfaces to enable/disable bluetooth

Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Ben Dooks <ben-linux@fluff.org>

3 files changed, 52 insertions, 47 deletions

diff --git a/arch/arm/mach-s3c2410/Kconfig b/arch/arm/mach-s3c2410/Kconfig
index 3d4e9da3fa52..dd1fcc7e6708 100644
--- a/arch/arm/mach-s3c2410/Kconfig
+++ b/arch/arm/mach-s3c2410/Kconfig
@@ -81,6 +81,14 @@ config ARCH_H1940
         help
           Say Y here if you are using the HP IPAQ H1940
 
+config H1940BT
+        tristate "Control the state of H1940 bluetooth chip"
+        depends on ARCH_H1940
+        select RFKILL
+        help
+          This is a simple driver that is able to control
+          the state of built in bluetooth chip on h1940.
+
 config PM_H1940
         bool
         help
diff --git a/arch/arm/mach-s3c2410/Makefile b/arch/arm/mach-s3c2410/Makefile
index 2ab5ba4b266f..0d468e96e83e 100644
--- a/arch/arm/mach-s3c2410/Makefile
+++ b/arch/arm/mach-s3c2410/Makefile
@@ -21,7 +21,8 @@ obj-$(CONFIG_S3C2410_PLLTABLE)	+= pll.o
 # Machine support
 
 obj-$(CONFIG_ARCH_SMDK2410)     += mach-smdk2410.o
-obj-$(CONFIG_ARCH_H1940)        += mach-h1940.o h1940-bluetooth.o
+obj-$(CONFIG_ARCH_H1940)        += mach-h1940.o
+obj-$(CONFIG_H1940BT)           += h1940-bluetooth.o
 obj-$(CONFIG_PM_H1940)          += pm-h1940.o
 obj-$(CONFIG_MACH_N30)          += mach-n30.o
 obj-$(CONFIG_ARCH_BAST)         += mach-bast.o usb-simtec.o
diff --git a/arch/arm/mach-s3c2410/h1940-bluetooth.c b/arch/arm/mach-s3c2410/h1940-bluetooth.c
index 5aabf117cbb0..b7d1f8d27bc2 100644
--- a/arch/arm/mach-s3c2410/h1940-bluetooth.c
+++ b/arch/arm/mach-s3c2410/h1940-bluetooth.c
@@ -17,6 +17,7 @@
 #include <linux/ctype.h>
 #include <linux/leds.h>
 #include <linux/gpio.h>
+#include <linux/rfkill.h>
 
 #include <mach/regs-gpio.h>
 #include <mach/hardware.h>
@@ -24,21 +25,10 @@
 
 #define DRV_NAME              "h1940-bt"
 
-#ifdef CONFIG_LEDS_H1940
-DEFINE_LED_TRIGGER(bt_led_trigger);
-#endif
-
-static int state;
-
 /* Bluetooth control */
 static void h1940bt_enable(int on)
 {
         if (on) {
-#ifdef CONFIG_LEDS_H1940
-                /* flashing Blue */
-                led_trigger_event(bt_led_trigger, LED_HALF);
-#endif
-
                 /* Power on the chip */
                 h1940_latch_control(0, H1940_LATCH_BLUETOOTH_POWER);
                 /* Reset the chip */
@@ -46,48 +36,31 @@ static void h1940bt_enable(int on)
                 s3c2410_gpio_setpin(S3C2410_GPH(1), 1);
                 mdelay(10);
                 s3c2410_gpio_setpin(S3C2410_GPH(1), 0);
-
-                state = 1;
         }
         else {
-#ifdef CONFIG_LEDS_H1940
-                led_trigger_event(bt_led_trigger, 0);
-#endif
-
                 s3c2410_gpio_setpin(S3C2410_GPH(1), 1);
                 mdelay(10);
                 s3c2410_gpio_setpin(S3C2410_GPH(1), 0);
                 mdelay(10);
                 h1940_latch_control(H1940_LATCH_BLUETOOTH_POWER, 0);
-
-                state = 0;
         }
 }
 
-static ssize_t h1940bt_show(struct device *dev, struct device_attribute *attr, char *buf)
+static int h1940bt_set_block(void *data, bool blocked)
 {
-        return snprintf(buf, PAGE_SIZE, "%d\n", state);
+        h1940bt_enable(!blocked);
+        return 0;
 }
 
-static ssize_t h1940bt_store(struct device *dev, struct device_attribute *attr, const char *buf, size_t count)
-{
-        int new_state;
-        char *endp;
-
-        new_state = simple_strtoul(buf, &endp, 0);
-        if (*endp && !isspace(*endp))
-                return -EINVAL;
-
-        h1940bt_enable(new_state);
-
-        return count;
-}
-static DEVICE_ATTR(enable, 0644,
-                h1940bt_show,
-                h1940bt_store);
+static const struct rfkill_ops h1940bt_rfkill_ops = {
+        .set_block = h1940bt_set_block,
+};
 
 static int __init h1940bt_probe(struct platform_device *pdev)
 {
+        struct rfkill *rfk;
+        int ret = 0;
+
         /* Configures BT serial port GPIOs */
         s3c2410_gpio_cfgpin(S3C2410_GPH(0), S3C2410_GPH0_nCTS0);
         s3c2410_gpio_pullup(S3C2410_GPH(0), 1);
@@ -98,21 +71,44 @@ static int __init h1940bt_probe(struct platform_device *pdev)
         s3c2410_gpio_cfgpin(S3C2410_GPH(3), S3C2410_GPH3_RXD0);
         s3c2410_gpio_pullup(S3C2410_GPH(3), 1);
 
-#ifdef CONFIG_LEDS_H1940
-        led_trigger_register_simple("h1940-bluetooth", &bt_led_trigger);
-#endif
 
-        /* disable BT by default */
-        h1940bt_enable(0);
+        rfk = rfkill_alloc(DRV_NAME, &pdev->dev, RFKILL_TYPE_BLUETOOTH,
+                        &h1940bt_rfkill_ops, NULL);
+        if (!rfk) {
+                ret = -ENOMEM;
+                goto err_rfk_alloc;
+        }
+
+        rfkill_set_led_trigger_name(rfk, "h1940-bluetooth");
+
+        ret = rfkill_register(rfk);
+        if (ret)
+                goto err_rfkill;
+
+        platform_set_drvdata(pdev, rfk);
+
+        return 0;
 
-        return device_create_file(&pdev->dev, &dev_attr_enable);
+err_rfkill:
+        rfkill_destroy(rfk);
+err_rfk_alloc:
+        return ret;
 }
 
 static int h1940bt_remove(struct platform_device *pdev)
 {
-#ifdef CONFIG_LEDS_H1940
-        led_trigger_unregister_simple(bt_led_trigger);
-#endif
+        struct rfkill *rfk = platform_get_drvdata(pdev);
+
+        platform_set_drvdata(pdev, NULL);
+
+        if (rfk) {
+                rfkill_unregister(rfk);
+                rfkill_destroy(rfk);
+        }
+        rfk = NULL;
+
+        h1940bt_enable(0);
+
         return 0;
 }