Sandisk Sansa Connect port (FS #12363)

Included are drivers for buttons, backlight, lcd, audio and storage.



git-svn-id: svn://svn.rockbox.org/rockbox/trunk@31000 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 273 insertions, 0 deletions

diff --git a/firmware/target/arm/tms320dm320/sansa-connect/lcd-sansaconnect.c b/firmware/target/arm/tms320dm320/sansa-connect/lcd-sansaconnect.c
new file mode 100644
index 0000000000..fcfc82e876
--- /dev/null
+++ b/firmware/target/arm/tms320dm320/sansa-connect/lcd-sansaconnect.c
@@ -0,0 +1,273 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id: $
+ *
+ * Copyright (C) 2011 by Tomasz Moń
+ *
+ * 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 <sys/types.h>
+#include "config.h"
+#include "cpu.h"
+#include "string.h"
+#include "kernel.h"
+#include "system.h"
+#include "system-target.h"
+#include "lcd.h"
+#include "lcd-target.h"
+#include "avr-sansaconnect.h"
+
+/* Copies a rectangle from one framebuffer to another. Can be used in
+   single transfer mode with width = num pixels, and height = 1 which
+   allows a full-width rectangle to be copied more efficiently. */
+extern void lcd_copy_buffer_rect(fb_data *dst, const fb_data *src,
+                                 int width, int height);
+
+static bool lcd_on = true;
+
+bool lcd_active(void)
+{
+    return lcd_on;
+}
+
+#if defined(HAVE_LCD_SLEEP)
+void lcd_sleep(void)
+{
+    if (lcd_on)
+    {
+        lcd_on = false;
+        avr_hid_lcm_sleep();
+        sleep(HZ/20);
+
+        /* disable video encoder */
+        bitclr16(&IO_VID_ENC_VMOD, 0x01);
+
+        sleep(HZ/20);
+
+        /* disable video encoder clock */
+        bitclr16(&IO_CLK_MOD1, CLK_MOD1_VENC);
+    }
+}
+
+void lcd_awake(void)
+{
+    if (!lcd_on)
+    {
+        lcd_on = true;
+        /* enable video encoder clock */
+        bitset16(&IO_CLK_MOD1, CLK_MOD1_VENC); 
+
+        /* enable video encoder */
+        bitset16(&IO_VID_ENC_VMOD, 0x01);
+
+        avr_hid_lcm_wake();
+
+        send_event(LCD_EVENT_ACTIVATION, NULL);
+
+        lcd_update();
+    }
+}
+#endif
+
+void lcd_init_device(void)
+{
+    unsigned int addr;
+ 
+    /* Disable Video Encoder clock */
+    bitclr16(&IO_CLK_MOD1, CLK_MOD1_VENC);
+
+    /* configure GIO39, GIO34 and GIO33 as outputs */
+    IO_GIO_DIR2 &= ~((1 << 7) /* GIO39 */ | (1 << 2) /* GIO34 */ |
+                     (1 << 1) /* GIO33 */);
+    
+    IO_GIO_FSEL3 = (IO_GIO_FSEL3 & ~(0x300F)) |
+                   (0x1000) /* GIO39 - FIELD_VENC */ |
+                   (0x3)    /* GIO33 - CLKOUT1B (bootloader does this) */ |
+                   (0x4);   /* GIO34 - PWM1 (brightness control) */
+
+    /* OSD Clock = VENC Clock /2,
+       CCD clock PCLK,
+       VENC Clock from PLLA */
+    IO_CLK_SEL1 = 0x3;
+
+    /* Set VENC Clock Division to 11
+       OF bootloader sets division to 8, vmlinux sets it to 11 */
+    IO_CLK_DIV3 = (IO_CLK_DIV3 & ~(0x1F00)) | 0xB00;
+
+    /* Enable DAC and OSD clocks */
+    bitset16(&IO_CLK_MOD1, CLK_MOD1_DAC | CLK_MOD1_OSD);
+
+    /* magic values based on OF bootloader initialization */
+    IO_VID_ENC_VMOD = 0x2010;
+    IO_VID_ENC_VDPRO = 0x80;
+    IO_VID_ENC_HSPLS = 0x4;
+    IO_VID_ENC_HINT = 0x4B0;
+    IO_VID_ENC_HSTART = 0x88;
+    IO_VID_ENC_HVALID = 0x3C0;
+    IO_VID_ENC_HSDLY = 0;
+    IO_VID_ENC_VSPLS = 0x2;
+    IO_VID_ENC_VINT = 0x152;
+    IO_VID_ENC_VSTART = 0x6;
+    IO_VID_ENC_VVALID = 0x140;
+    IO_VID_ENC_VSDLY = 0;
+    IO_VID_ENC_DCLKCTL = 0x3;
+    IO_VID_ENC_DCLKPTN0 = 0xC;
+    IO_VID_ENC_VDCTL = 0x6000;
+    IO_VID_ENC_SYNCTL = 0x2;
+    IO_VID_ENC_LCDOUT = 0x101;
+    IO_VID_ENC_VMOD = 0x2011;
+
+    /* Copy Rockbox frame buffer to the second framebuffer */
+    lcd_update();
+
+    avr_hid_lcm_power_on();
+
+    /* set framebuffer address - OF sets RAM start address to 0x1000000 */
+    addr = ((int)FRAME-CONFIG_SDRAM_START)/32;
+
+    IO_OSD_OSDWINADH    = addr >> 16;
+    IO_OSD_OSDWIN0ADL   = addr & 0xFFFF;
+
+    IO_OSD_BASEPX = 0x44;
+    IO_OSD_BASEPY = 0x6;
+    IO_OSD_OSDWIN0XP = 0;
+    IO_OSD_OSDWIN0YP = 0;
+    IO_OSD_OSDWIN0XL = LCD_WIDTH*2;  /* OF bootloader sets 480 */
+    IO_OSD_OSDWIN0YL = LCD_HEIGHT;   /* OF bootloader sets 320 */
+    IO_OSD_OSDWIN0OFST = 0xF;
+    IO_OSD_OSDWINMD0 = 0x25FB;/* OF bootloader sets 25C3,
+                                 vmlinux changes this to 0x25FB */
+    IO_OSD_VIDWINMD = 0; /* disable video windows (OF sets 0x03) */
+
+    IO_OSD_OSDWINMD1 = 0; /* disable OSD window 1 */
+
+    /* Enable DAC, Video Encoder and OSD clocks */
+    bitset16(&IO_CLK_MOD1, CLK_MOD1_DAC | CLK_MOD1_VENC | CLK_MOD1_OSD);
+
+    /* Enable Video Encoder - RGB666, custom timing */
+    IO_VID_ENC_VMOD = 0x2011;
+    avr_hid_lcm_wake();
+}
+
+/* Update a fraction of the display. */
+void lcd_update_rect(int x, int y, int width, int height)
+        __attribute__ ((section(".icode")));
+void lcd_update_rect(int x, int y, int width, int height)
+{
+    register fb_data *dst, *src;
+
+    if (!lcd_on)
+        return;
+
+    if ((width | height) < 0)
+        return; /* Nothing left to do */
+
+    if (x + width > LCD_WIDTH)
+        width = LCD_WIDTH - x; /* Clip right */
+    if (x < 0)
+        width += x, x = 0; /* Clip left */
+
+    if (y + height > LCD_HEIGHT)
+        height = LCD_HEIGHT - y; /* Clip bottom */
+    if (y < 0)
+        height += y, y = 0; /* Clip top */
+
+    dst = FRAME + LCD_WIDTH*y + x;
+    src = &lcd_framebuffer[y][x];
+
+    /* Copy part of the Rockbox framebuffer to the second framebuffer */
+    if (width < LCD_WIDTH)
+    {
+        /* Not full width - do line-by-line */
+        lcd_copy_buffer_rect(dst, src, width, height);
+    }
+    else
+    {
+        /* Full width - copy as one line */
+        lcd_copy_buffer_rect(dst, src, LCD_WIDTH*height, 1);
+    }
+}
+
+/* Update the display.
+   This must be called after all other LCD functions that change the display. */
+void lcd_update(void) __attribute__ ((section(".icode")));
+void lcd_update(void)
+{
+    if (!lcd_on)
+        return;
+
+    lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
+}
+
+void lcd_set_contrast(int val) {
+  (void) val;
+  // TODO:
+}
+
+void lcd_set_invert_display(bool yesno) {
+  (void) yesno;
+  // TODO:
+}
+
+void lcd_set_flip(bool yesno) {
+  (void) yesno;
+  // TODO:
+}
+
+/* Line write helper function for lcd_yuv_blit. Write two lines of yuv420. */
+extern void lcd_write_yuv420_lines(fb_data *dst,
+                                   unsigned char chroma_buf[LCD_HEIGHT/2*3],
+                                   unsigned char const * const src[3],
+                                   int width, int stride);
+
+/* Performance function to blit a YUV bitmap directly to the LCD */
+void lcd_blit_yuv(unsigned char * const src[3],
+                  int src_x, int src_y, int stride,
+                  int x, int y, int width, int height)
+{
+    /* Caches for chroma data so it only need be recalculated every other
+       line */
+    unsigned char chroma_buf[LCD_HEIGHT/2*3]; /* 480 bytes */
+    unsigned char const * yuv_src[3];
+    off_t z;
+
+    if (!lcd_on)
+        return;
+
+    /* Sorry, but width and height must be >= 2 or else */
+    width &= ~1;
+    height >>= 1;
+
+    fb_data *dst = (fb_data*)FRAME + x * LCD_WIDTH + (LCD_WIDTH - y) - 1;
+
+    z = stride*src_y;
+    yuv_src[0] = src[0] + z + src_x;
+    yuv_src[1] = src[1] + (z >> 2) + (src_x >> 1);
+    yuv_src[2] = src[2] + (yuv_src[1] - src[1]);
+
+    do
+    {
+        lcd_write_yuv420_lines(dst, chroma_buf, yuv_src, width,
+        stride);
+
+        yuv_src[0] += stride << 1; /* Skip down two luma lines */
+        yuv_src[1] += stride >> 1; /* Skip down one chroma line */
+        yuv_src[2] += stride >> 1;
+        dst -= 2;
+    }
+    while (--height > 0);
+}
+