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authorMarcin Bukat <marcin.bukat@gmail.com>2010-07-16 07:24:08 +0000
committerMarcin Bukat <marcin.bukat@gmail.com>2010-07-16 07:24:08 +0000
commit5b5275a6c9bc0ad760d6ead86e8ee7f49532989a (patch)
treeb97013921f28a80419e4c5dac6b199afac14d07f /firmware/target/coldfire
parent701dafdf30a1a01e2110a8aa3d59ee45550a9489 (diff)
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HD200: Change move.w -> move.b in lcd-as-hd200.S when doing transfers to lcd to explicity show that lcd bus is 8bits wide.
git-svn-id: svn://svn.rockbox.org/rockbox/trunk@27445 a1c6a512-1295-4272-9138-f99709370657
Diffstat (limited to 'firmware/target/coldfire')
-rw-r--r--firmware/target/coldfire/mpio/hd200/lcd-as-hd200.S42
1 files changed, 21 insertions, 21 deletions
diff --git a/firmware/target/coldfire/mpio/hd200/lcd-as-hd200.S b/firmware/target/coldfire/mpio/hd200/lcd-as-hd200.S
index 29e52a0f1e..17b3dabfbe 100644
--- a/firmware/target/coldfire/mpio/hd200/lcd-as-hd200.S
+++ b/firmware/target/coldfire/mpio/hd200/lcd-as-hd200.S
@@ -34,8 +34,8 @@
lcd_write_command:
move.l (4, %sp), %d0
- move.w %d0, LCD_BASE_ADDRESS /* data is 1byte but CF uses word
- * transfers only */
+ move.b %d0, LCD_BASE_ADDRESS /* transfers 1 byte to LCD */
+
rts
.wc_end:
.size lcd_write_command,.wc_end-lcd_write_command
@@ -47,11 +47,10 @@ lcd_write_command:
lcd_write_command_e:
lea.l LCD_BASE_ADDRESS, %a0
-
move.l (4, %sp), %d0 /* Command */
- move.w %d0, (%a0)
+ move.b %d0, (%a0)
move.l (8, %sp), %d0 /* Data */
- move.w %d0, (%a0) /* Write to LCD */
+ move.b %d0, (%a0) /* Write to LCD */
rts
.wce_end:
@@ -79,22 +78,22 @@ lcd_write_data:
.w_write:
move.w (%a0)+, %d1 /* load data 3 cycles*/
- move.w %d1, (%a1) /* first byte 1 cycle*/
+ move.b %d1, (%a1) /* first byte 1 cycle*/
lsr.l #8, %d1 /* load second byte 1 cycle*/
- move.w %d1, (%a1) /* transfer 1 cycle*/
+ move.b %d1, (%a1) /* transfer 1 cycle*/
subq.l #1, %d0 /* decrement counter 1 cycle*/
jeq .write_end
.l_write:
move.l (%a0)+, %d1 /* load data 2 cycles*/
swap %d1 /* 1 cycle */
- move.w %d1, (%a1) /* first byte 1 cycle*/
+ move.b %d1, (%a1) /* first byte 1 cycle*/
lsr.l #8, %d1 /* 1 cycle */
- move.w %d1, (%a1) /* second byte 1 cycle*/
+ move.b %d1, (%a1) /* second byte 1 cycle*/
lsr.l #8, %d1 /* 1 cycle */
- move.w %d1, (%a1) /* third byte 1 cycle*/
+ move.b %d1, (%a1) /* third byte 1 cycle*/
lsr.l #8, %d1 /* 1 cycle */
- move.w %d1, (%a1) /* forth byte 1 cycle*/
+ move.b %d1, (%a1) /* forth byte 1 cycle*/
subq.l #2, %d0 /* decrement counter 1 cycle*/
bne.s .l_write
@@ -113,10 +112,11 @@ lcd_mono_data:
.md_loop:
move.b (%a0)+, %d1
- move.w %d1, (%a1) /* byte transfers actually */
- move.w %d1, (%a1)
+ move.b %d1, (%a1) /* byte transfers */
+ move.b %d1, (%a1)
subq.l #1, %d0
bne.s .md_loop
+
rts
.md_end:
.size lcd_mono_data,.md_end-lcd_mono_data
@@ -163,12 +163,12 @@ lcd_grey_data:
not.l %d2 /* negate bits */
lsr.l %d4, %d2 /* %d2 = ........................01234567 */
- move.w %d2, (%a3) /* transfer first LCD byte */
+ move.b %d2, (%a3) /* transfer first LCD byte */
movem.l %d0-%d1, (%a1) /* store 8 new pixel phases */
addq.l #8, %a1
- move.w %d2, (%a3) /* transfer second LCD byte */
+ move.b %d2, (%a3) /* transfer second LCD byte */
.g_hend:
cmp.l %a1, %a2
@@ -195,12 +195,12 @@ lcd_grey_data:
not.l %d6 /* negate bits */
lsr.l %d4, %d6 /* %d6 = ........................01234567 */
- move.w %d6, (%a3) /* transfer first LCD byte */
+ move.b %d6, (%a3) /* transfer first LCD byte */
movem.l (%a0), %d7/%a4-%a6 /* fetch 2 * 8 pixel values */
lea.l (16, %a0), %a0
- move.w %d6, (%a3) /* transfer second LCD byte */
+ move.b %d6, (%a3) /* transfer second LCD byte */
add.l %d7, %d0
add.l %a4, %d1
@@ -222,12 +222,12 @@ lcd_grey_data:
add.l %a5, %d2
add.l %a6, %d3
- move.w %d6, (%a3) /* transfer first LCD byte */
+ move.b %d6, (%a3) /* transfer first LCD byte */
movem.l %d0-%d3, (%a1) /* store 2 * 8 new pixel phases */
lea.l (16, %a1), %a1 /* advance pointer */
- move.w %d6, (%a3) /* transfer second LCD byte */
+ move.b %d6, (%a3) /* transfer second LCD byte */
cmp.l %a2, %a1
bls.s .g_line_loop
@@ -256,12 +256,12 @@ lcd_grey_data:
not.l %d2 /* negate bits */
lsr.l %d4, %d2 /* %d2 = ........................01234567 */
- move.w %d2, (%a3) /* transfer first LCD byte */
+ move.b %d2, (%a3) /* transfer first LCD byte */
movem.l %d0-%d1, (%a1) /* store 8 new pixel phases */
/* addq.l #8, %a1 not needed anymore */
- move.w %d2, (%a3) /* transfer second LCD byte */
+ move.b %d2, (%a3) /* transfer second LCD byte */
.g_tend:
movem.l (%sp), %d2-%d7/%a2-%a6