Forgot to cvs add lcd-as-h100.S.

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@11469 a1c6a512-1295-4272-9138-f99709370657

1 files changed, 96 insertions, 0 deletions

diff --git a/firmware/target/coldfire/iriver/h100/lcd-as-h100.S b/firmware/target/coldfire/iriver/h100/lcd-as-h100.S
new file mode 100644
index 0000000000..1605b210c1
--- /dev/null
+++ b/firmware/target/coldfire/iriver/h100/lcd-as-h100.S
@@ -0,0 +1,96 @@
+/***************************************************************************
+ *             __________               __   ___.
+ *   Open      \______   \ ____   ____ |  | _\_ |__   _______  ___
+ *   Source     |       _//  _ \_/ ___\|  |/ /| __ \ /  _ \  \/  /
+ *   Jukebox    |    |   (  <_> )  \___|    < | \_\ (  <_> > <  <
+ *   Firmware   |____|_  /\____/ \___  >__|_ \|___  /\____/__/\_ \
+ *                     \/            \/     \/    \/            \/
+ * $Id$
+ *
+ * Copyright (C) 2004 by Jens Arnold
+ * Based on the work of Alan Korr and Jörg Hohensohn
+ *
+ * All files in this archive are subject to the GNU General Public License.
+ * See the file COPYING in the source tree root for full license agreement.
+ *
+ * This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
+ * KIND, either express or implied.
+ *
+ ****************************************************************************/
+
+#include "config.h"
+#include "cpu.h"
+
+    .section    .icode,"ax",@progbits
+
+    .align      2
+    .global     lcd_write_command
+    .type       lcd_write_command,@function
+
+lcd_write_command:
+    move.l  (4,%sp),%d0
+    lea MBAR2,%a1
+    move.l   #~8,%d1
+    and.l   %d1,(0xb4,%a1)
+    move.w  %d0,0xf0000000
+    rts
+.wc_end:
+    .size   lcd_write_command,.wc_end-lcd_write_command
+
+
+    .align      2
+    .global     lcd_write_command_ex
+    .type       lcd_write_command_ex,@function
+
+lcd_write_command_ex:
+    lea MBAR2,%a1
+
+    move.l  (4,%sp),%d0     /* Command */
+
+    move.l   #~8,%d1        /* Set A0 = 0 */
+    and.l   %d1,(0xb4,%a1)
+    move.w  %d0,0xf0000000  /* Write to LCD */
+
+    not.l   %d1             /* Set A0 = 1 */
+    or.l    %d1,(0xb4,%a1)
+
+    move.l  (8,%sp),%d0     /* Data */
+    cmp.l   #0xffffffff,%d0 /* -1? */
+    beq.b   .last
+    move.w  %d0,0xf0000000  /* Write to LCD */
+
+    move.l  (12,%sp),%d0    /* Data */
+    cmp.l   #0xffffffff,%d0 /* -1? */
+    beq.b   .last
+    move.w  %d0,0xf0000000  /* Write to LCD */
+
+.last:
+    rts
+.wcex_end:
+    .size   lcd_write_command_ex,.wcex_end-lcd_write_command_ex
+
+
+    .align      2
+    .global     lcd_write_data
+    .type       lcd_write_data,@function
+
+lcd_write_data:
+    move.l  (4,%sp),%a0     /* Data pointer */
+    move.l  (8,%sp),%d0     /* Length */
+    lea MBAR2,%a1
+    moveq   #8,%d1
+    or.l    %d1,(0xb4,%a1)
+
+    lea     0xf0000000,%a1
+.loop:
+    /* When running in IRAM, this loop takes 7 cycles plus the LCD write.
+       The 7 cycles are necessary to follow the LCD timing specs
+       at 140MHz */
+    move.b  (%a0)+,%d1      /* 3(1/0) */
+    move.w  %d1,(%a1)       /* 1(0/1) */
+    subq.l  #1,%d0          /* 1(0/0) */
+    nop                     /* 1(0/0) */
+    bne     .loop           /* 2(0/0) */
+    rts
+.wd_end:
+    .size   lcd_write_data,.wd_end-lcd_write_data