len0rd/rockbox
1
0
Fork 1
mirror of https://github.com/Rockbox/rockbox.git synced 2025-11-09 13:12:37 -05:00
Code Issues Projects Releases Packages Wiki Activity Actions

Xduoo X3 - Grey scale lib update

Browse source 
greylib on the xduoo x3 now matches the rest of the 1bit targets

Change-Id: I2685869da6734404356552cc9f4ed5f59ebd6650
This commit is contained in:
William Wilgus 2020-08-27 10:06:19 -04:00 • committed by William Wilgus
parent 8990c90b87
commit 5fb4c74bfb
2 changed files with 45 additions and 44 deletions
Download patch file Download diff file Expand all files Collapse all files

39
firmware/target/mips/ingenic_jz47xx/xduoo_x3/lcd-xduoo_x3.c
View file

@ -301,28 +301,29 @@ void lcd_blit_mono(const unsigned char *data, int x, int by, int width,
void lcd_grey_data(unsigned char *values, unsigned char *phases, int count) ICODE_ATTR;
void lcd_grey_data(unsigned char *values, unsigned char *phases, int count)
{
unsigned char a, b, c, d;
unsigned long ltmp;
unsigned long *lval = (unsigned long *)values;
unsigned long *lpha = (unsigned long *)phases;
const unsigned long mask = 0x80808080;
__gpio_set_pin(PIN_LCD_DC);
while(count--)
{
c = 0;
d = 8;
while(d--)
{
a = *phases;
b = *values++;
b += a & ~0x80;
*phases++ = b;
c <<= 1;
c |= a >> 7;
}
REG_GPIO_PXDATC(2) = 0x000030FC;
REG_GPIO_PXDATS(2) = ((c & 0xC0) << 6) | ((c & 0x3F) << 2);
__gpio_clear_pin(PIN_LCD_WR);
bitdelay();
__gpio_set_pin(PIN_LCD_WR);
bitdelay();
/* calculate disp data from phase we only use the last byte (8bits) */
ltmp = mask & lpha[0]; // ltmp= 3.......2.......1.......0.......
ltmp |= (mask & lpha[1]) >> 4; // ltmp= 7.......6.......5.......4.......
/* phase0 | phase1 >> 4 */ // ltmp= 3...7...2...6...1...5...0...4...
ltmp |= ltmp >> 9; // ltmp= 3...7...23..67..12..56..01..45..
ltmp |= ltmp >> 9; // ltmp= 3...7...23..67..123.567.012.456.
ltmp |= ltmp >> 9; // ltmp= 3...7...23..67..123.567.01234567
/* update the phases */
lpha[0] = lval[0] + (lpha[0] & ~mask);
lpha[1] = lval[1] + (lpha[1] & ~mask);
lcd_write_data((const fb_data*) &ltmp, 1);
lpha+=2;
lval+=2;
}
}