viafb: Turn GPIO and i2c into proper platform devices

Another step toward making this thing a real multifunction device driver.

Cc: ScottFang@viatech.com.cn
Cc: JosephChan@via.com.tw
Cc: Harald Welte <laforge@gnumonks.org>
Acked-by: Florian Tobias Schandinat <FlorianSchandinat@gmx.de>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>

1 files changed, 34 insertions, 15 deletions

diff --git a/drivers/video/via/via-gpio.c b/drivers/video/via/via-gpio.c
index 6b361177bf03..44537be1f070 100644
--- a/drivers/video/via/via-gpio.c
+++ b/drivers/video/via/via-gpio.c
@@ -7,6 +7,7 @@
 
 #include <linux/spinlock.h>
 #include <linux/gpio.h>
+#include <linux/platform_device.h>
 #include "via-core.h"
 #include "via-gpio.h"
 #include "global.h"
@@ -172,12 +173,27 @@ static void viafb_gpio_disable(struct viafb_gpio *gpio)
         via_write_reg_mask(VIASR, gpio->vg_port_index, 0, 0x02);
 }
 
+/*
+ * Look up a specific gpio and return the number it was assigned.
+ */
+int viafb_gpio_lookup(const char *name)
+{
+        int i;
 
+        for (i = 0; i < gpio_config.gpio_chip.ngpio; i++)
+                if (!strcmp(name, gpio_config.active_gpios[i]->vg_name))
+                        return gpio_config.gpio_chip.base + i;
+        return -1;
+}
+EXPORT_SYMBOL_GPL(viafb_gpio_lookup);
 
-
-int viafb_create_gpios(struct viafb_dev *vdev,
-                const struct via_port_cfg *port_cfg)
+/*
+ * Platform device stuff.
+ */
+static __devinit int viafb_gpio_probe(struct platform_device *platdev)
 {
+        struct viafb_dev *vdev = platdev->dev.platform_data;
+        struct via_port_cfg *port_cfg = vdev->port_cfg;
         int i, ngpio = 0, ret;
         struct viafb_gpio *gpio;
         unsigned long flags;
@@ -222,11 +238,10 @@ int viafb_create_gpios(struct viafb_dev *vdev,
                 gpio_config.gpio_chip.ngpio = 0;
         }
         return ret;
-/* Port enable ? */
 }
 
 
-int viafb_destroy_gpios(void)
+static int viafb_gpio_remove(struct platform_device *platdev)
 {
         unsigned long flags;
         int ret = 0, i;
@@ -253,16 +268,20 @@ out:
         return ret;
 }
 
-/*
- * Look up a specific gpio and return the number it was assigned.
- */
-int viafb_gpio_lookup(const char *name)
+static struct platform_driver via_gpio_driver = {
+        .driver = {
+                .name = "viafb-gpio",
+        },
+        .probe = viafb_gpio_probe,
+        .remove = viafb_gpio_remove,
+};
+
+int viafb_gpio_init(void)
 {
-        int i;
+        return platform_driver_register(&via_gpio_driver);
+}
 
-        for (i = 0; i < gpio_config.gpio_chip.ngpio; i++)
-                if (!strcmp(name, gpio_config.active_gpios[i]->vg_name))
-                        return gpio_config.gpio_chip.base + i;
-        return -1;
+void viafb_gpio_exit(void)
+{
+        platform_driver_unregister(&via_gpio_driver);
 }
-EXPORT_SYMBOL_GPL(viafb_gpio_lookup);