1 files changed, 562 insertions, 0 deletions

diff --git a/firmware/target/arm/olympus/mrobe-100/lcd-remote-mr100.c b/firmware/target/arm/olympus/mrobe-100/lcd-remote-mr100.c
new file mode 100644
index 0000000000..036b6ae71c
--- /dev/null
+++ b/firmware/target/arm/olympus/mrobe-100/lcd-remote-mr100.c
@@ -0,0 +1,562 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2009 Mark Arigo
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "cpu.h"
+#include "kernel.h"
+#include "thread.h"
+#include "system.h"
+#include "lcd-remote.h"
+#include "button.h"
+#include "button-target.h"
+
+/* Temporary defines until we sort out why the gui stuff doesn't like this size
+   (I believe the status bar isn't doing sanity checks and is writing outside
+   the frame buffer size). */
+#define RC_WIDTH                79
+#define RC_HEIGHT               16
+
+#define RC_CONTRAST_MASK        0x000000ff
+#define RC_SCREEN_ON            0x00000100
+#define RC_BACKLIGHT_ON         0x00000200
+
+#define RC_DEV_INIT             0x00001000
+#define RC_DETECTED             0x00002000
+#define RC_AWAKE                0x00004000
+#define RC_POWER_OFF            0x00008000
+
+#define RC_UPDATE_LCD           0x00010000
+#define RC_UPDATE_CONTROLLER    0x00020000
+#define RC_UPDATE_ICONS         0x00040000
+#define RC_UPDATE_MASK          (RC_UPDATE_LCD|RC_UPDATE_CONTROLLER|RC_UPDATE_ICONS)
+
+#define RC_TX_ERROR             0x00100000
+#define RC_RX_ERROR             0x00200000
+#define RC_TIMEOUT_ERROR        0x00400000
+#define RC_ERROR_MASK           (RC_TX_ERROR|RC_RX_ERROR|RC_TIMEOUT_ERROR)
+
+#define RC_FORCE_DETECT         0x80000000
+
+#define RX_READY                0x01
+#define TX_READY                0x20
+
+#define POLL_TIMEOUT            50000
+
+bool remote_initialized = false;
+unsigned int rc_status = 0;
+unsigned char rc_buf[5];
+
+/* ================================================== */
+/* Remote thread functions                            */
+/*   These functions are private to the remote thread */
+/* ================================================== */
+static struct wakeup rc_thread_wakeup;
+static unsigned int remote_thread_id;
+static int remote_stack[256/sizeof(int)];
+static const char * const remote_thread_name = "remote";
+
+static bool remote_wait_ready(int ready_mask)
+{
+    unsigned long current;
+    unsigned long start = USEC_TIMER;
+    unsigned long timeout = start + POLL_TIMEOUT;
+
+    rc_status &= ~RC_TIMEOUT_ERROR;
+
+    if (start <= timeout)
+    {
+        do
+        {
+            if (SER1_LSR & ready_mask)
+                return true;
+
+            //~ sleep(1);
+
+            current = USEC_TIMER;
+        } while (current < timeout);
+    }
+    else
+    {
+        do
+        {
+            if (SER1_LSR & ready_mask)
+                return true;
+
+            //~ sleep(1);
+
+            current = USEC_TIMER - POLL_TIMEOUT;
+        } while (current < start);
+    }
+
+    rc_status |= RC_TIMEOUT_ERROR;
+    return false;
+}
+
+static bool remote_rx(void)
+{
+    int i;
+    unsigned char chksum[2];
+
+    rc_status &= ~RC_RX_ERROR;
+
+    for (i = 0; i < 5; i++)
+    {
+        if (!remote_wait_ready(RX_READY))
+        {
+            rc_status |= RC_RX_ERROR;
+            return false;
+        }
+
+        rc_buf[i] = SER1_RBR;
+    }
+
+    /* check opcode */
+    if ((rc_buf[0] & 0xf0) != 0xf0)
+    {
+        rc_status |= RC_RX_ERROR;
+        return false;
+    }
+
+    /* verify the checksums */
+    chksum[0] = chksum[1] = 0;
+    for (i = 0; i < 3; i++)
+    {
+        chksum[0] ^= rc_buf[i];
+        chksum[1] += rc_buf[i];
+    }
+
+    if ((chksum[0] != rc_buf[3]) && (chksum[1] != rc_buf[4]))
+    {
+        rc_status |= RC_RX_ERROR;
+        return false;
+    }
+
+    /* reception error */
+    if ((rc_buf[0] & 0x1) || (rc_buf[0] & 0x2) || (rc_buf[0] & 0x4))
+    {
+        rc_status |= RC_RX_ERROR;
+        return false;
+    }
+
+    return true;
+}
+
+static bool remote_tx(unsigned char *data, int len)
+{
+    int i;
+    unsigned char chksum[2];
+
+    rc_status &= ~RC_TX_ERROR;
+    
+    chksum[0] = chksum[1] = 0;
+
+    for (i = 0; i < len; i++)
+    {
+        if (!remote_wait_ready(TX_READY))
+        {
+            rc_status |= RC_TX_ERROR;
+            return false;
+        }
+
+        SER1_THR = data[i];
+        chksum[0] ^= data[i];
+        chksum[1] += data[i];
+    }
+
+    for (i = 0; i < 2; i++)
+    {
+        if (!remote_wait_ready(TX_READY))
+        {
+            rc_status |= RC_TX_ERROR;
+            return false;
+        }
+
+        SER1_THR = chksum[i];
+    }
+
+    return remote_rx();
+}
+
+static void remote_dev_enable(bool enable)
+{
+    if (enable)
+    {
+        outl(inl(0x70000018) | 0xaa000, 0x70000018);
+        DEV_INIT2 &= ~0x800;
+
+        GPIO_CLEAR_BITWISE(GPIOL_OUTPUT_VAL, 0x80);
+        GPIO_SET_BITWISE(GPIOL_OUTPUT_EN, 0x80);
+
+        DEV_EN |= DEV_SER1;
+
+        SER1_RBR;
+        SER1_LCR = 0x80;
+        SER1_DLL = 0x50;
+        SER1_DLM = 0x00;
+        SER1_LCR = 0x03;
+        SER1_FCR = 0x07;
+
+        rc_status |= RC_DEV_INIT;
+    }
+    else
+    {
+        outl(inl(0x70000018) & ~0xaa000, 0x70000018);
+        DEV_INIT2 &= ~0x800;
+
+        GPIO_SET_BITWISE(GPIOL_OUTPUT_VAL, 0x80);
+        GPIO_SET_BITWISE(GPIOL_OUTPUT_EN, 0x80);
+
+        DEV_RS |= DEV_SER1;
+        nop;
+        DEV_RS &= ~DEV_SER1;
+
+        DEV_EN &= ~DEV_SER1;
+
+        rc_status &= ~RC_DEV_INIT;
+    }
+}
+
+void remote_update_lcd(void)
+{
+    int x, y, draw_now;
+    unsigned char data[RC_WIDTH + 7];
+
+    /* If the draw_now bit is set, the draw occurs directly on the LCD.
+       Otherwise, the data is stored in an off-screen buffer and displayed
+       the next time a draw operation is executed with this flag set. */
+    draw_now = 0;
+
+    for (y = 0; y < 2; y++)
+    {
+        data[0] = 0x51;
+        data[1] = draw_now << 7;
+        data[2] = RC_WIDTH;         /* width */
+        data[3] = 0;                /* x1    */
+        data[4] = y << 3;           /* y1    */
+        data[5] = RC_WIDTH;         /* x2    */
+        data[6] = (y + 1) << 3;     /* y2    */
+
+        for (x = 0; x < RC_WIDTH; x++)
+            data[x + 7] = lcd_remote_framebuffer[y][x];
+
+        remote_tx(data, RC_WIDTH + 7);
+
+        draw_now = 1;
+    }
+}
+
+static void remote_update_controller(void)
+{
+    unsigned char data[3];
+
+    data[0] = 0x31;
+    data[1] = 0x00;
+    if (rc_status & RC_SCREEN_ON)
+        data[1] |= 0x80;
+    if (rc_status & RC_BACKLIGHT_ON)
+        data[1] |= 0x40;
+    data[2] = (unsigned char)(rc_status & RC_CONTRAST_MASK);
+    remote_tx(data, 3);
+}
+
+#if 0
+static void remote_update_icons(unsigned char symbols)
+{
+    unsigned char data[2];
+
+    if (!(rc_status & RC_AWAKE) && !(rc_status & RC_SCREEN_ON))
+        return;
+
+    data[0] = 0x41;
+    data[1] = symbols;
+    remote_tx(data, 2);
+}
+#endif
+
+static bool remote_nop(void)
+{
+    unsigned char val[2];
+
+    val[0] = 0x11;
+    val[1] = 0x30;
+    return remote_tx(val, 2);
+}
+
+static void remote_wake(void)
+{
+    if (remote_nop())
+    {
+        rc_status |= RC_AWAKE;
+        return;
+    }
+
+    rc_status &= ~RC_AWAKE;
+    return;
+}
+
+static void remote_sleep(void)
+{
+    unsigned char data[2];
+
+    if (rc_status & RC_AWAKE)
+    {
+        data[0] = 0x71;
+        data[1] = 0x30;
+        remote_tx(data, 2);
+
+        udelay(25000);
+    }
+
+    rc_status &= ~RC_AWAKE;
+}
+
+static void remote_off(void)
+{
+    if (rc_status & RC_AWAKE)
+        remote_sleep();
+
+    if (rc_status & RC_DEV_INIT)
+        remote_dev_enable(false);
+
+    rc_status &= ~(RC_DETECTED | RC_ERROR_MASK | RC_UPDATE_MASK);
+    remote_initialized = false;
+}
+
+static void remote_on(void)
+{
+    if (!(rc_status & RC_DEV_INIT))
+        remote_dev_enable(true);
+
+    remote_wake();
+
+    if (rc_status & RC_AWAKE)
+    {
+        rc_status |= RC_DETECTED;
+        remote_initialized = true;
+
+        rc_status |= (RC_UPDATE_MASK | RC_SCREEN_ON | RC_BACKLIGHT_ON);
+        //~ remote_update_icons(0xf0); /* show battery */
+    }
+    else
+    {
+        rc_status &= ~RC_DETECTED;
+        remote_initialized = false;
+    }
+}
+
+static void remote_thread(void)
+{
+    int rc_thread_sleep_count = 10;
+    int rc_thread_wait_timeout = TIMEOUT_BLOCK;
+
+    while (1)
+    {
+        wakeup_wait(&rc_thread_wakeup, rc_thread_wait_timeout);
+
+        /* Error handling (most likely due to remote not present) */
+        if (rc_status & RC_ERROR_MASK)
+        {
+            if (--rc_thread_sleep_count == 0)
+                rc_status |= RC_POWER_OFF;
+        }
+
+        /* Power-off (thread sleeps) */
+        if (rc_status & RC_POWER_OFF)
+        {
+            remote_off();
+
+            rc_thread_sleep_count = 10;
+            rc_thread_wait_timeout = TIMEOUT_BLOCK;
+
+            continue;
+        }
+
+        /* Detection */
+        if (!(rc_status & RC_DETECTED))
+        {
+            rc_thread_wait_timeout = HZ;
+
+            if (headphones_inserted())
+            {
+                remote_on();
+
+                if (rc_status & RC_AWAKE)
+                {
+                    rc_thread_sleep_count = 10;
+                    rc_thread_wait_timeout = HZ/20; /* ~50ms for updates */
+                }
+            }
+            else
+            {
+                if (--rc_thread_sleep_count == 0)
+                    rc_status &= ~RC_POWER_OFF;
+            }
+
+            continue;
+        }
+
+        /* Update the remote (one per wakeup cycle) */
+        if (headphones_inserted() && (rc_status & RC_AWAKE))
+        {
+            if (rc_status & RC_SCREEN_ON)
+            {
+                /* In order of importance */
+                if (rc_status & RC_UPDATE_CONTROLLER)
+                {
+                    remote_update_controller();
+                    rc_status &= ~RC_UPDATE_CONTROLLER;
+                }
+                else if (rc_status & RC_UPDATE_LCD)
+                {
+                    remote_update_lcd();
+                    rc_status &= ~RC_UPDATE_LCD;
+                }
+                else
+                {
+                    remote_nop();
+                }
+            }
+            else
+            {
+                remote_nop();
+            }
+        }
+    }
+}
+
+/* ============================================= */
+/* Public functions                              */
+/*   These should only set the update flags that */
+/*   will be executed in the remote thread.      */
+/* ============================================= */
+bool lcd_remote_read_device(unsigned char *data)
+{
+    if (!(rc_status & RC_AWAKE) || (rc_status & RC_ERROR_MASK))
+        return false;
+
+    /* Return the most recent data. While the remote is plugged,
+       this is updated ~50ms */
+    data[0] = rc_buf[0];
+    data[1] = rc_buf[1];
+    data[2] = rc_buf[2];
+    data[3] = rc_buf[3];
+    data[4] = rc_buf[4];
+
+    return true;
+}
+
+void lcd_remote_set_invert_display(bool yesno)
+{
+    /* dummy function...need to introduce HAVE_LCD_REMOTE_INVERT */
+    (void)yesno;
+}
+
+/* turn the display upside down (call lcd_remote_update() afterwards) */
+void lcd_remote_set_flip(bool yesno)
+{
+    /* dummy function...need to introduce HAVE_LCD_REMOTE_FLIP */
+    (void)yesno;
+}
+
+int lcd_remote_default_contrast(void)
+{
+    return DEFAULT_REMOTE_CONTRAST_SETTING;
+}
+
+void lcd_remote_set_contrast(int val)
+{
+    rc_status = (rc_status & ~RC_CONTRAST_MASK) | (val & RC_CONTRAST_MASK);
+    rc_status |= RC_UPDATE_CONTROLLER;
+}
+
+void lcd_remote_backlight(bool on)
+{
+    if (on)
+        rc_status |= RC_BACKLIGHT_ON;
+    else
+        rc_status &= ~RC_BACKLIGHT_ON;
+
+    rc_status |= RC_UPDATE_CONTROLLER;
+}
+
+void lcd_remote_off(void)
+{
+    /* should only be used to power off at shutdown */
+    rc_status |= RC_POWER_OFF;
+    wakeup_signal(&rc_thread_wakeup);
+
+    /* wait until the things are powered off */
+    while (rc_status & RC_DEV_INIT)
+        sleep(HZ/10);
+}
+
+void lcd_remote_on(void)
+{
+    /* Only wake the remote thread if it's in the blocked state. */
+    struct thread_entry *rc_thread = thread_id_entry(remote_thread_id);
+    if (rc_thread->state == STATE_BLOCKED || (rc_status & RC_FORCE_DETECT))
+    {
+        rc_status &= ~RC_FORCE_DETECT;
+        rc_status &= ~RC_POWER_OFF;
+        wakeup_signal(&rc_thread_wakeup);
+    }
+}
+
+bool remote_detect(void)
+{
+    return (rc_status & RC_DETECTED);
+}
+
+void lcd_remote_init_device(void)
+{
+    /* reset */
+    remote_dev_enable(false);
+    rc_status |= RC_FORCE_DETECT; /* force detection at startup */
+
+    /* unknown */
+    GPIO_SET_BITWISE(GPIOL_ENABLE, 0x80);
+    GPIO_CLEAR_BITWISE(GPIOL_OUTPUT_VAL, 0x80);
+    GPIO_SET_BITWISE(GPIOL_OUTPUT_EN, 0x80);
+
+    /* a thread is required to poll & update the remote */
+    wakeup_init(&rc_thread_wakeup);
+    remote_thread_id = create_thread(remote_thread, remote_stack,
+                            sizeof(remote_stack), 0, remote_thread_name
+                            IF_PRIO(, PRIORITY_SYSTEM)
+                            IF_COP(, CPU));
+}
+
+/* Update the display.
+   This must be called after all other LCD functions that change the display. */
+void lcd_remote_update(void)
+{
+    rc_status |= RC_UPDATE_LCD;
+}
+
+/* Update a fraction of the display. */
+void lcd_remote_update_rect(int x, int y, int width, int height)
+{
+    (void)x;
+    (void)y;
+    (void)width;
+    (void)height;
+
+    rc_status |= RC_UPDATE_LCD;
+}