len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-12-09 05:05:20 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Samsung YH920 : fix lcd_blit_mono displaying twice too wide

Browse source 
lcd_write_data() wrote twice too much pixels to the controller
The fix is the same than r22885, vertically packed 2bpp displays use
8-bits fb_data while horizontally packed 2bpp use 16-bits fb_data

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22893 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Rafaël Carré 2009-10-03 13:56:23 +00:00
parent ccf2078150
commit 71db2d74b5
1 changed files with 15 additions and 11 deletions
Download patch file Download diff file Expand all files Collapse all files

26
firmware/target/arm/samsung/yh920/lcd-as-yh920.S
View file

@ -27,27 +27,31 @@
.align 2 .align 2
/* Writes an array of pixels of specified width (in 8 bits unit)
*
* Arguments:
* r0 : pixels array
* r1 : number of pixels in 8 bits unit
*
* Register usage:
* r2 : LCD_CONTROL value / pixel value
* r3 : lcd bridge address
*/
.global lcd_write_data .global lcd_write_data
.type lcd_write_data,%function .type lcd_write_data,%function
lcd_write_data: lcd_write_data:
ldr r12, =LCD1_BASE ldr r3, =LCD1_BASE
.loop: .loop:
ldrb r2, [r0], #1
1: 1:
ldr r3, [r12] ldr r2, [r3]
tst r3, #LCD1_BUSY_MASK tst r2, #LCD1_BUSY_MASK
bne 1b bne 1b
str r2, [r12, #0x10]
ldrb r2, [r0], #1 ldrb r2, [r0], #1
1: str r2, [r3, #0x10]
ldr r3, [r12]
tst r3, #LCD1_BUSY_MASK
bne 1b
str r2, [r12, #0x10]
subs r1, r1, #1 subs r1, r1, #1
bne .loop bne .loop