LCD remote support for iAudio X5

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@10352 a1c6a512-1295-4272-9138-f99709370657

firmware/backlight.c

@@ -336,12 +336,21 @@ static void _backlight_off(void)
 }
 
 #ifdef HAVE_REMOTE_LCD
+#ifdef SIMULATOR
+static void __remote_backlight_on(void)
+{
+    sim_remote_backlight(100);
+}
+
+static void __remote_backlight_off(void)
+{
+    sim_remote_backlight(0);
+}
+#else
 #ifndef TARGET_TREE
 static void __remote_backlight_on(void)
 {
-#ifdef SIMULATOR
+#if defined(IRIVER_H300_SERIES)
-    sim_remote_backlight(100);
-#elif defined(IRIVER_H300_SERIES)
     and_l(~0x00000002, &GPIO1_OUT);
 #else
     and_l(~0x00000800, &GPIO_OUT);
@@ -350,9 +359,7 @@ static void __remote_backlight_on(void)
 
 static void __remote_backlight_off(void)
 {
-#ifdef SIMULATOR
+#if defined(IRIVER_H300_SERIES)
-    sim_remote_backlight(0);
-#elif defined(IRIVER_H300_SERIES)
     or_l(0x00000002, &GPIO1_OUT);
 #else
     or_l(0x00000800, &GPIO_OUT);
@@ -360,6 +367,7 @@ static void __remote_backlight_off(void)
 }
 #endif /* TARGET_TREE */
 #endif /* HAVE_REMOTE_LCD */
+#endif /* SIMULATOR */
 
 void backlight_thread(void)
 {

firmware/drivers/lcd-remote-2bit-vi.c

@@ -33,6 +33,7 @@
 #include "font.h"
 #include "rbunicode.h"
 #include "bidi.h"
+#include "lcd-remote-target.h"
 
 #define SCROLLABLE_LINES (((LCD_REMOTE_HEIGHT+4)/5 < 32) ? (LCD_REMOTE_HEIGHT+4)/5 : 32)
 
@@ -67,18 +68,12 @@ static const char scroll_tick_table[16] = {
     100, 80, 64, 50, 40, 32, 25, 20, 16, 12, 10, 8, 6, 5, 4, 3
 };
 
-
+/* remote hotplug */
-/* LCD init */
+#ifndef SIMULATOR
-void lcd_remote_init(void)
+static struct event_queue remote_scroll_queue;
-{
+#define REMOTE_INIT_LCD   1
-    lcd_remote_clear_display();
+#define REMOTE_DEINIT_LCD 2
-#if 0 /* FIXME */
-    /* Call device specific init */
-    remote_init();
 #endif
-    create_thread(scroll_thread, scroll_stack,
-                  sizeof(scroll_stack), scroll_name);
-}
 
 /*** parameter handling ***/
 
@@ -1020,6 +1015,51 @@ void lcd_remote_puts_scroll_style_offset(int x, int y, const unsigned char *stri
         scrolling_lines &= ~(1<<y);
 }
 
+#ifndef SIMULATOR
+/* Monitor remote hotswap */
+static void remote_tick(void)
+{
+    static bool last_status = false;
+    static int countdown = 0;
+    static int init_delay = 0;
+    bool current_status;
+
+    current_status = remote_detect();
+    
+    /* Only report when the status has changed */
+    if (current_status != last_status)
+    {
+        last_status = current_status;
+        countdown = current_status ? 20*HZ : 1;
+    }
+    else
+    {
+        /* Count down until it gets negative */
+        if (countdown >= 0)
+            countdown--;
+            
+        if (current_status)
+        {
+            if (!(countdown % 8))
+            {
+                if (--init_delay <= 0)
+                {
+                    queue_post(&remote_scroll_queue, REMOTE_INIT_LCD, 0);
+                    init_delay = 6;
+                }
+            }
+        }
+        else
+        {
+            if (countdown == 0)
+            {
+                queue_post(&remote_scroll_queue, REMOTE_DEINIT_LCD, 0);
+            }
+        }
+    }
+}
+#endif
+
 static void scroll_thread(void)
 {
     struct font* pf;
@@ -1027,11 +1067,42 @@ static void scroll_thread(void)
     int index;
     int xpos, ypos;
     int lastmode;
+    long delay = 0;
+    long next_tick = current_tick;
+#ifndef SIMULATOR
+    struct event ev;
+#endif
 
     /* initialize scroll struct array */
     scrolling_lines = 0;
 
     while ( 1 ) {
+
+#ifdef SIMULATOR
+        sleep(delay);
+#else
+        if (remote_initialized)
+            queue_wait_w_tmo(&remote_scroll_queue, &ev, delay);
+        else
+            queue_wait(&remote_scroll_queue, &ev);
+
+        switch (ev.id)
+        {
+            case REMOTE_INIT_LCD:
+                lcd_remote_on();
+                lcd_remote_update();
+                break;
+                
+            case REMOTE_DEINIT_LCD:
+                lcd_remote_off();
+                break;
+        }
+
+        delay = next_tick - current_tick - 1;
+        if (delay >= 0)
+            continue;
+#endif
+
         for ( index = 0; index < SCROLLABLE_LINES; index++ ) {
             /* really scroll? */
             if ( !(scrolling_lines&(1<<index)) )
@@ -1080,6 +1151,34 @@ static void scroll_thread(void)
             lcd_remote_update_rect(xpos, ypos, LCD_REMOTE_WIDTH - xpos, pf->height);
         }
 
-        sleep(scroll_ticks);
+
+        next_tick += scroll_ticks;
+        delay = next_tick - current_tick - 1;
+        if (delay < 0)
+        {
+            next_tick = current_tick + 1;
+            delay = 0;
         }
     }
+}
+
+/* LCD init */
+#ifdef SIMULATOR
+void lcd_remote_init(void)
+{
+    create_thread(scroll_thread, scroll_stack,
+                  sizeof(scroll_stack), scroll_name);
+}
+#else
+void lcd_remote_init(void)
+{
+    /* Call device specific init */
+    lcd_remote_init_device();
+    
+    lcd_remote_clear_display();
+    queue_clear(&remote_scroll_queue); /* no queue_init() -- private queue */
+    tick_add_task(remote_tick);
+    create_thread(scroll_thread, scroll_stack,
+                  sizeof(scroll_stack), scroll_name);
+}
+#endif

firmware/target/coldfire/iaudio/x5/lcd-remote-target.h

@@ -19,12 +19,16 @@
 #ifndef LCD_REMOTE_TARGET_H
 #define LCD_REMOTE_TARGET_H
 
+void lcd_remote_init_device(void);
 void lcd_remote_write_command(int cmd);
 void lcd_remote_write_command_ex(int cmd, int data);
 void lcd_remote_write_data(const unsigned char* p_bytes, int count);
 bool remote_detect(void);
 void lcd_remote_powersave(bool on);
 void lcd_remote_set_contrast(int val);
-void remote_set_row_and_col(int row, int col);
+void lcd_remote_on(void);
+void lcd_remote_off(void);
+
+extern bool remote_initialized;
 
 #endif

firmware/target/coldfire/iaudio/x5/lcd-remote-x5.c

@@ -19,6 +19,7 @@
 #include "config.h"
 #include "system.h"
 #include "kernel.h"
+#include "lcd-remote.h"
 
 /* The LCD in the iAudio M3/M5/X5 remote control is a Tomato LSI 0350 */
 
@@ -39,6 +40,7 @@
 #define	LCD_SET_GRAY       0x88
 #define	LCD_SET_PWM_FRC    0x90
 #define	LCD_SET_POWER_SAVE 0xa8
+#define LCD_REVERSE        0xa6
 
 #define CS_LO      and_l(~0x00000020, &GPIO1_OUT)
 #define CS_HI      or_l(0x00000020, &GPIO1_OUT)
@@ -51,8 +53,12 @@
 
 #define LCD_REMOTE_DEFAULT_CONTRAST 0x18;
 
+/* cached settings values */
+static bool cached_invert = false;
+static bool cached_flip = false;
 static int cached_contrast = LCD_REMOTE_DEFAULT_CONTRAST;
-static bool remote_initialized = false;
+
+bool remote_initialized = false;
 
 static void remote_write(unsigned char byte, bool is_command)
 {
@@ -94,13 +100,6 @@ void lcd_remote_write_data(const unsigned char* p_bytes, int count)
         remote_write(*p_bytes++, false);
 }
 
-void remote_set_row_and_col(int row, int col)
-{
-    lcd_remote_write_command(LCD_SET_PAGE | (row & 0xf));
-    lcd_remote_write_command_ex(LCD_SET_COLUMN | ((col >> 4) & 0xf),
-                                col & 0xf);
-}
-
 int lcd_remote_default_contrast(void)
 {
     return LCD_REMOTE_DEFAULT_CONTRAST;
@@ -108,24 +107,27 @@ int lcd_remote_default_contrast(void)
 
 void lcd_remote_powersave(bool on)
 {
+    if(remote_initialized) {
         if (on)
             lcd_remote_write_command(LCD_SET_POWER_SAVE | 1);
         else
             lcd_remote_write_command(LCD_SET_POWER_SAVE | 1);
     }
+}
 
 void lcd_remote_set_contrast(int val)
 {
     cached_contrast = val;
+    if(remote_initialized)
         lcd_remote_write_command_ex(LCD_SET_VOLUME, val);
 }
 
 bool remote_detect(void)
 {
-    return (GPIO_READ & 0x01000000);
+    return (GPIO_READ & 0x01000000)?false:true;
 }
 
-void remote_init(void)
+void lcd_remote_init_device(void)
 {
     or_l(0x0000e000, &GPIO_OUT);
     or_l(0x0000e000, &GPIO_ENABLE);
@@ -135,17 +137,18 @@ void remote_init(void)
     or_l(0x00000020, &GPIO1_ENABLE);
     or_l(0x00000020, &GPIO1_FUNCTION);
 	
+    and_l(~0x01000000, &GPIO_OUT);
+    and_l(~0x01000000, &GPIO_ENABLE);
+    or_l(0x01000000, &GPIO_FUNCTION);
+}
+
+void lcd_remote_on(void)
+{
     sleep(10);
 	
     lcd_remote_write_command(LCD_SET_DUTY_RATIO);
     lcd_remote_write_command(0x70);  /* 1/128 */
     
-    lcd_remote_write_command(LCD_SELECT_ADC | 1); /* Reverse direction */
-    lcd_remote_write_command(LCD_SELECT_SHL | 8); /* Reverse direction */
-    
-    lcd_remote_write_command(LCD_SET_COM0);
-    lcd_remote_write_command(0x00);
-    
     lcd_remote_write_command(LCD_OSC_ON);
     
     lcd_remote_write_command(LCD_SELECT_DCDC | 2); /* DC/DC 5xboost */
@@ -173,5 +176,90 @@ void remote_init(void)
 
     remote_initialized = true;
 
+    lcd_remote_set_flip(cached_flip);
     lcd_remote_set_contrast(cached_contrast);
+    lcd_remote_set_invert_display(cached_invert);
+}
+
+void lcd_remote_off(void)
+{
+    remote_initialized = false;
+    CS_HI;
+    RS_HI;
+}
+
+/* Update the display.
+   This must be called after all other LCD functions that change the display. */
+void lcd_remote_update(void) ICODE_ATTR;
+void lcd_remote_update(void)
+{
+    int y;
+    if(remote_initialized) {
+        for(y = 0;y < LCD_REMOTE_HEIGHT/8;y++) {
+            /* Copy display bitmap to hardware.
+               The COM48-COM63 lines are not connected so we have to skip
+               them. Further, the column address doesn't wrap, so we
+               have to update one page at a time. */
+            lcd_remote_write_command(LCD_SET_PAGE | (y>5?y+2:y));
+            lcd_remote_write_command_ex(LCD_SET_COLUMN | 0, 0);
+            lcd_remote_write_data((unsigned char *)lcd_remote_framebuffer[y],
+                                  LCD_REMOTE_WIDTH*2);
+        }
+    }
+}
+
+/* Update a fraction of the display. */
+void lcd_remote_update_rect(int, int, int, int) ICODE_ATTR;
+void lcd_remote_update_rect(int x, int y, int width, int height)
+{
+    if(remote_initialized) {
+        int ymax;
+
+        /* The Y coordinates have to work on even 8 pixel rows */
+        ymax = (y + height-1) >> 3;
+        y >>= 3;
+
+        if(x + width > LCD_REMOTE_WIDTH)
+            width = LCD_REMOTE_WIDTH - x;
+        if (width <= 0)
+            return; /* nothing left to do, 0 is harmful to lcd_write_data() */
+        if(ymax >= LCD_REMOTE_HEIGHT)
+            ymax = LCD_REMOTE_HEIGHT-1;
+
+        /* Copy specified rectangle bitmap to hardware
+           COM48-COM63 are not connected, so we need to skip those */
+        for (; y <= ymax; y++) 
+        {
+            lcd_remote_write_command(LCD_SET_PAGE |
+                                     ((y > 5?y + 2:y) & 0xf));
+            lcd_remote_write_command_ex(LCD_SET_COLUMN | ((x >> 4) & 0xf),
+                                        x & 0xf);
+
+            lcd_remote_write_data (
+                (unsigned char *)&lcd_remote_framebuffer[y][x], width*2);
+        } 
+    }
+}
+
+void lcd_remote_set_invert_display(bool yesno)
+{
+    cached_invert = yesno;
+    if(remote_initialized)
+        lcd_remote_write_command(LCD_REVERSE | yesno);
+}
+
+void lcd_remote_set_flip(bool yesno)
+{
+    cached_flip = yesno;
+    if(remote_initialized) {
+        if(yesno) {
+            lcd_remote_write_command(LCD_SELECT_ADC | 0);
+            lcd_remote_write_command(LCD_SELECT_SHL | 0);
+            lcd_remote_write_command_ex(LCD_SET_COM0, 16);
+        } else {
+            lcd_remote_write_command(LCD_SELECT_ADC | 1);
+            lcd_remote_write_command(LCD_SELECT_SHL | 8);
+            lcd_remote_write_command_ex(LCD_SET_COM0, 0);
+        }
+    }
 }