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Save some binsize in LCD driver of iPod nano 2G. No impact to speed.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28938 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Andree Buschmann 2011-01-01 19:25:09 +00:00
parent 506a15bd73
commit 21b89aab5a
1 changed files with 25 additions and 44 deletions
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69
firmware/target/arm/s5l8700/ipodnano2g/lcd-nano2g.c
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@ -341,22 +341,12 @@ void lcd_update(void)
lcd_update_rect(0, 0, LCD_WIDTH, LCD_HEIGHT);
}
/* Line write helper function. */
extern void lcd_write_line(const fb_data *addr,
int pixelcount,
const unsigned int lcd_base_addr);
/* Update a fraction of the display. */
void lcd_update_rect(int, int, int, int) ICODE_ATTR;
void lcd_update_rect(int x, int y, int width, int height)
/* Helper function to set up drawing region and start drawing */
static void lcd_setup_drawing_region(int, int, int, int) ICODE_ATTR;
static void lcd_setup_drawing_region(int x, int y, int width, int height)
{
int y0, x0, y1, x1;
fb_data* p;
/* Both x and width need to be preprocessed due to asm optimizations */
x = x & ~1; /* ensure x is even */
width = (width + 3) & ~3; /* ensure width is a multiple of 4 */
x0 = x; /* start horiz */
y0 = y; /* start vert */
x1 = (x + width) - 1; /* max horiz */
@ -384,19 +374,36 @@ void lcd_update_rect(int x, int y, int width, int height)
s5l_lcd_write_cmd(R_MEMORY_WRITE);
}
}
/* Line write helper function. */
extern void lcd_write_line(const fb_data *addr,
int pixelcount,
const unsigned int lcd_base_addr);
/* Update a fraction of the display. */
void lcd_update_rect(int, int, int, int) ICODE_ATTR;
void lcd_update_rect(int x, int y, int width, int height)
{
fb_data* p;
/* Both x and width need to be preprocessed due to asm optimizations */
x = x & ~1; /* ensure x is even */
width = (width + 3) & ~3; /* ensure width is a multiple of 4 */
lcd_setup_drawing_region(x, y, width, height);
/* Copy display bitmap to hardware */
p = &lcd_framebuffer[y0][x0];
p = &lcd_framebuffer[y][x];
if (LCD_WIDTH == width) {
/* Write all lines at once */
lcd_write_line(p, height*LCD_WIDTH, LCD_BASE);
} else {
y1 = height;
do {
/* Write a single line */
lcd_write_line(p, width, LCD_BASE);
p += LCD_WIDTH;
} while (--y1 > 0 );
} while (--height > 0 );
}
}
@ -411,38 +418,12 @@ 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)
{
unsigned int z, y0, x0, y1, x1;;
unsigned int z;
unsigned char const * yuv_src[3];
width = (width + 1) & ~1; /* ensure width is even */
x0 = x; /* start horiz */
y0 = y; /* start vert */
x1 = (x + width) - 1; /* max horiz */
y1 = (y + height) - 1; /* max vert */
if (lcd_type==0) {
s5l_lcd_write_cmd_data(R_HORIZ_ADDR_START_POS, x0);
s5l_lcd_write_cmd_data(R_HORIZ_ADDR_END_POS, x1);
s5l_lcd_write_cmd_data(R_VERT_ADDR_START_POS, y0);
s5l_lcd_write_cmd_data(R_VERT_ADDR_END_POS, y1);
s5l_lcd_write_cmd_data(R_HORIZ_GRAM_ADDR_SET, (x1 << 8) | x0);
s5l_lcd_write_cmd_data(R_VERT_GRAM_ADDR_SET, (y1 << 8) | y0);
s5l_lcd_write_cmd(0);
s5l_lcd_write_cmd(R_WRITE_DATA_TO_GRAM);
} else {
s5l_lcd_write_cmd(R_COLUMN_ADDR_SET);
s5l_lcd_write_data(x0); /* Start column */
s5l_lcd_write_data(x1); /* End column */
s5l_lcd_write_cmd(R_ROW_ADDR_SET);
s5l_lcd_write_data(y0); /* Start row */
s5l_lcd_write_data(y1); /* End row */
s5l_lcd_write_cmd(R_MEMORY_WRITE);
}
lcd_setup_drawing_region(x, y, width, height);
z = stride * src_y;
yuv_src[0] = src[0] + z + src_x;