fuze+: move defines from .c to .h; implement button reading for volume up/down and power

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@29822 a1c6a512-1295-4272-9138-f99709370657

firmware/target/arm/imx233/sansa-fuzeplus/button-fuzeplus.c

@@ -19,6 +19,9 @@
  *
  ****************************************************************************/
 #include "button-target.h"
+#include "system.h"
+#include "system-target.h"
+#include "pinctrl-imx233.h"
 
 void button_init_device(void)
 {
@@ -26,5 +29,19 @@ void button_init_device(void)
 
 int button_read_device(void)
 {
-    return 0;
+    int res = 0;
+    if(!imx233_get_gpio_input_mask(1, 0x40000000))
+        res |= BUTTON_VOL_DOWN;
+    /* The imx233 uses the voltage on the PSWITCH pin to detect power up/down
+     * events as well as recovery mode. Since the power button is the power button
+     * and the volume up button is recovery, it is not possible to know whether
+     * power button is down when volume up is down (except if there is another
+     * method but volume up and power don't seem to be wired to GPIO pins). */
+    switch((HW_POWER_STS & HW_POWER_STS__PSWITCH_BM) >> HW_POWER_STS__PSWITCH_BP)
+    {
+        case 1: res |= BUTTON_POWER; break;
+        case 3: res |= BUTTON_VOL_UP; break;
+        default: break;
+    }
+    return res;
 }

firmware/target/arm/imx233/sansa-fuzeplus/button-target.h

@@ -29,7 +29,6 @@ int button_read_device(void);
 
 /* Main unit's buttons */
 #define BUTTON_POWER        0x00000001
-
 #define BUTTON_VOL_UP       0x00000002
 #define BUTTON_VOL_DOWN     0x00000004
 

firmware/target/arm/imx233/system-imx233.c

@@ -30,30 +30,6 @@
 #include "lcd.h"
 #include "backlight-target.h"
 
-#define HW_POWER_BASE           0x80044000
-
-#define HW_POWER_RESET          (*(volatile uint32_t *)(HW_POWER_BASE + 0x100))
-#define HW_POWER_RESET__UNLOCK  0x3E770000
-#define HW_POWER_RESET__PWD     0x1
-
-#define HW_ICOLL_BASE           0x80000000
-
-#define HW_ICOLL_VECTOR         (*(volatile uint32_t *)(HW_ICOLL_BASE + 0x0))
-
-#define HW_ICOLL_LEVELACK       (*(volatile uint32_t *)(HW_ICOLL_BASE + 0x10))
-#define HW_ICOLL_LEVELACK__LEVEL0   0x1
-
-#define HW_ICOLL_CTRL           (*(volatile uint32_t *)(HW_ICOLL_BASE + 0x20))
-#define HW_ICOLL_CTRL__IRQ_FINAL_ENABLE (1 << 16)
-#define HW_ICOLL_CTRL__ARM_RSE_MODE     (1 << 18)
-
-#define HW_ICOLL_VBASE          (*(volatile uint32_t *)(HW_ICOLL_BASE + 0x40))
-#define HW_ICOLL_INTERRUPT(i)   (*(volatile uint32_t *)(HW_ICOLL_BASE + 0x120 + (i) * 0x10))
-#define HW_ICOLL_INTERRUPT__PRIORITY_BM 0x3
-#define HW_ICOLL_INTERRUPT__ENABLE      0x4
-#define HW_ICOLL_INTERRUPT__SOFTIRQ     0x8
-#define HW_ICOLL_INTERRUPT__ENFIQ       0x10
-
 #define default_interrupt(name) \
     extern __attribute__((weak, alias("UIRQ"))) void name(void)
 

firmware/target/arm/imx233/system-target.h

@@ -30,6 +30,33 @@
 #define HW_DIGCTL_BASE          0x8001C000
 #define HW_DIGCTL_MICROSECONDS  (*(volatile uint32_t *)(HW_DIGCTL_BASE + 0xC0))
 
+#define HW_POWER_BASE           0x80044000
+#define HW_POWER_STS            (*(volatile uint32_t *)(HW_POWER_BASE + 0xc0))
+#define HW_POWER_STS__PSWITCH_BP    20
+#define HW_POWER_STS__PSWITCH_BM    (3 << 20)
+
+#define HW_POWER_RESET          (*(volatile uint32_t *)(HW_POWER_BASE + 0x100))
+#define HW_POWER_RESET__UNLOCK  0x3E770000
+#define HW_POWER_RESET__PWD     0x1
+
+#define HW_ICOLL_BASE           0x80000000
+
+#define HW_ICOLL_VECTOR         (*(volatile uint32_t *)(HW_ICOLL_BASE + 0x0))
+
+#define HW_ICOLL_LEVELACK       (*(volatile uint32_t *)(HW_ICOLL_BASE + 0x10))
+#define HW_ICOLL_LEVELACK__LEVEL0   0x1
+
+#define HW_ICOLL_CTRL           (*(volatile uint32_t *)(HW_ICOLL_BASE + 0x20))
+#define HW_ICOLL_CTRL__IRQ_FINAL_ENABLE (1 << 16)
+#define HW_ICOLL_CTRL__ARM_RSE_MODE     (1 << 18)
+
+#define HW_ICOLL_VBASE          (*(volatile uint32_t *)(HW_ICOLL_BASE + 0x40))
+#define HW_ICOLL_INTERRUPT(i)   (*(volatile uint32_t *)(HW_ICOLL_BASE + 0x120 + (i) * 0x10))
+#define HW_ICOLL_INTERRUPT__PRIORITY_BM 0x3
+#define HW_ICOLL_INTERRUPT__ENABLE      0x4
+#define HW_ICOLL_INTERRUPT__SOFTIRQ     0x8
+#define HW_ICOLL_INTERRUPT__ENFIQ       0x10
+
 #define INT_SRC_USB_CTRL    11
 #define INT_SRC_TIMER(nr)   (28 + (nr))
 #define INT_SRC_LCDIF_DMA   45