Fuze v2: Do button reading more efficiently by mapping button codes directly to the GPIO pin states where possible (all but 'home' and hold). This makes plugins incompatible; up the min version and sort things.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29097 a1c6a512-1295-4272-9138-f99709370657

apps/plugin.c

@@ -382,6 +382,7 @@ static const struct plugin_api rockbox_api = {
     file_exists,
     strip_extension,
     crc_32,
+    filetype_get_attr,
 
     /* dir */
     (opendir_func)PREFIX(opendir),
@@ -392,6 +393,10 @@ static const struct plugin_api rockbox_api = {
     dir_exists,
     dir_get_info,
 
+    /* browsing */
+    browse_context_init,
+    rockbox_browse,
+
     /* kernel/ system */
 #if defined(CPU_ARM) && CONFIG_PLATFORM & PLATFORM_NATIVE
     __div0,
@@ -772,9 +777,6 @@ static const struct plugin_api rockbox_api = {
 
     /* new stuff at the end, sort into place next time
        the API gets incompatible */
-    filetype_get_attr,
-    browse_context_init,
-    rockbox_browse,
 };
 
 int plugin_load(const char* plugin, const void* parameter)

apps/plugin.h

@@ -149,12 +149,12 @@ void* plugin_get_buffer(size_t *buffer_size);
 #define PLUGIN_MAGIC 0x526F634B /* RocK */
 
 /* increase this every time the api struct changes */
-#define PLUGIN_API_VERSION 197
+#define PLUGIN_API_VERSION 198
 
 /* update this to latest version if a change to the api struct breaks
    backwards compatibility (and please take the opportunity to sort in any
    new function which are "waiting" at the end of the function table) */
-#define PLUGIN_MIN_API_VERSION 196
+#define PLUGIN_MIN_API_VERSION 198
 
 /* plugin return codes */
 /* internal returns start at 0x100 to make exit(1..255) work */
@@ -448,6 +448,9 @@ struct plugin_api {
     char* (*strip_extension)(char* buffer, int buffer_size, const char *filename);
     unsigned (*crc_32)(const void *src, unsigned len, unsigned crc32);
 
+    int (*filetype_get_attr)(const char* file);
+
+
 
     /* dir */
     DIR* (*opendir)(const char* name);
@@ -458,6 +461,13 @@ struct plugin_api {
     bool (*dir_exists)(const char *path);
     struct dirinfo (*dir_get_info)(DIR* parent, struct dirent *entry);
 
+    /* browsing */
+    void (*browse_context_init)(struct browse_context *browse,
+                                int dirfilter, unsigned flags,
+                                char *title, enum themable_icons icon,
+                                const char *root, const char *selected);
+    int (*rockbox_browse)(struct browse_context *browse);
+
     /* kernel/ system */
 #if defined(CPU_ARM) && CONFIG_PLATFORM & PLATFORM_NATIVE
     void (*__div0)(void);
@@ -901,12 +911,6 @@ struct plugin_api {
 
     /* new stuff at the end, sort into place next time
        the API gets incompatible */
-    int (*filetype_get_attr)(const char* file);
-    void (*browse_context_init)(struct browse_context *browse,
-                                int dirfilter, unsigned flags,
-                                char *title, enum themable_icons icon,
-                                const char *root, const char *selected);
-    int (*rockbox_browse)(struct browse_context *browse);
 };
 
 /* plugin header */

firmware/target/arm/as3525/sansa-fuzev2/button-fuzev2.c

@@ -213,9 +213,9 @@ void button_gpioa_isr(void)
  */
 int button_read_device(void)
 {
-    int btn = 0;
     static long power_counter = 0;
     bool hold = false;
+    int btn;
     unsigned gpiod6;
 
     /* if we don't wait for the fifo to empty, we'll see screen corruption
@@ -240,28 +240,16 @@ int button_read_device(void)
     GPIOB_PIN(0) = 0;
     udelay(2);
 
-    if (GPIOC_PIN(1) & 1<<1)
+    btn = GPIOC_PIN_MASK(0x3e) | (GPIOB_PIN(1) >> 1);
-        btn |= BUTTON_DOWN;
+
-    if (GPIOC_PIN(2) & 1<<2)
-        btn |= BUTTON_UP;
-    if (GPIOC_PIN(3) & 1<<3)
-        btn |= BUTTON_LEFT;
-    if (GPIOC_PIN(4) & 1<<4)
-        btn |= BUTTON_SELECT;
-    if (GPIOC_PIN(5) & 1<<5)
-        btn |= BUTTON_RIGHT;
-    if (GPIOB_PIN(1) & 1<<1)
-        btn |= BUTTON_HOME;
     if (amsv2_variant == 1)
         btn ^= BUTTON_HOME;
 
-    if (gpiod6 & 1<<6)
+    if (gpiod6)
     {   /* power/hold is on the same pin. we know it's hold if the bit isn't
          * set now anymore */
-        if (GPIOD_PIN(6) & 1<<6)
+        btn |= GPIOD_PIN(6);
-            btn |= BUTTON_POWER;
+        hold = !(btn & BUTTON_POWER);
-        else
-            hold = true;
     }
 
     if(gpiob_pin0_dir)

firmware/target/arm/as3525/sansa-fuzev2/button-target.h

@@ -32,15 +32,14 @@ bool button_hold(void);
 int button_read_device(void);
 /* Sandisk Sansa Fuze button codes */
 
-/* Main unit's buttons */
+/* Main unit's buttons - mapped for optimal reading */
 #define BUTTON_HOME         0x00000001
-
 #define BUTTON_DOWN         0x00000002
-#define BUTTON_RIGHT        0x00000004
+#define BUTTON_UP           0x00000004
-
 #define BUTTON_LEFT         0x00000008
 #define BUTTON_SELECT       0x00000010
-#define BUTTON_UP           0x00000020
+#define BUTTON_RIGHT        0x00000020
+
 #define BUTTON_POWER        0x00000040
 
 #define BUTTON_SCROLL_BACK  0x00000080