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HDD6330: implement block transfers through the LCD2 bridge in lcd_update_rect(), speedup is huge, fps over 4 times faster.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@28722 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Szymon Dziok 2010-12-02 20:35:25 +00:00
parent 290e27b401
commit 589d2110dc
3 changed files with 65 additions and 37 deletions
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98
firmware/target/arm/philips/hdd6330/lcd-hdd6330.c
View file

@ -30,14 +30,7 @@ static unsigned lcd_yuv_options SHAREDBSS_ATTR = 0;
/* wait for LCD */
static inline void lcd_wait_write(void)
{
int i = 0;
while (LCD2_PORT & LCD2_BUSY_MASK)
{
if (i < 2000)
i++;
else
LCD2_PORT &= ~LCD2_BUSY_MASK;
}
while (LCD2_PORT & LCD2_BUSY_MASK);
}
/* send LCD data */
@ -48,19 +41,13 @@ static void lcd_send_data(unsigned data)
}
/* send LCD command */
static void lcd_send_cmd(unsigned cmd)
static void lcd_send_reg(unsigned reg)
{
lcd_wait_write();
LCD2_PORT = LCD2_CMD_MASK | (cmd & 0xff);
LCD2_PORT = LCD2_CMD_MASK | (reg & 0xff);
lcd_wait_write();
}
static inline void lcd_send_pixel(unsigned pixel)
{
lcd_send_data(pixel >> 8);
lcd_send_data(pixel);
}
void lcd_init_device(void)
{
/* init handled by the OF bootloader */
@ -118,42 +105,83 @@ void lcd_update(void)
/* Update a fraction of the display. */
void lcd_update_rect(int x, int y, int width, int height)
{
const fb_data *addr;
unsigned long *addr;
int new_x, new_width;
/* Ensure x and width are both even - so we can read 32-bit aligned
data from lcd_framebuffer */
new_x = x&~1;
new_width = width&~1;
if (new_x+new_width < x+width) new_width += 2;
x = new_x;
width = new_width;
if (x + width >= LCD_WIDTH)
width = LCD_WIDTH - x;
if (y + height >= LCD_HEIGHT)
height = LCD_HEIGHT - y;
if ((width <= 0) || (height <= 0))
return; /* Nothing left to do. */
addr = &lcd_framebuffer[y][x];
lcd_send_cmd(0x01);
lcd_send_reg(0x01);
lcd_send_data(0x48);
lcd_send_cmd(0x05);
lcd_send_reg(0x05);
lcd_send_data(0x0f);
lcd_send_cmd(0x08);
lcd_send_reg(0x08);
lcd_send_data(y);
lcd_send_cmd(0x09);
lcd_send_reg(0x09);
lcd_send_data(y + height - 1);
lcd_send_cmd(0x0a);
lcd_send_reg(0x0a);
lcd_send_data(x + 16);
lcd_send_cmd(0x0b);
lcd_send_reg(0x0b);
lcd_send_data(x + width - 1 + 16);
lcd_send_cmd(0x06);
do {
int w = width;
do {
lcd_send_pixel(*addr++);
} while (--w > 0);
addr += LCD_WIDTH - width;
} while (--height > 0);
lcd_send_reg(0x06);
addr = (unsigned long*)&lcd_framebuffer[y][x];
while (height > 0)
{
int c, r;
int h, pixels_to_write;
pixels_to_write = (width * height) * 2;
h = height;
/* calculate how much we can do in one go */
if (pixels_to_write > 0x10000)
{
h = (0x10000/2) / width;
pixels_to_write = (width * h) * 2;
}
LCD2_BLOCK_CTRL = 0x10000080;
LCD2_BLOCK_CONFIG = 0xc0010000 | (pixels_to_write - 1);
LCD2_BLOCK_CTRL = 0x34000000;
/* for each row */
for (r = 0; r < h; r++)
{
/* for each column */
for (c = 0; c < width; c += 2)
{
while (!(LCD2_BLOCK_CTRL & LCD2_BLOCK_TXOK));
/* output 2 pixels */
LCD2_BLOCK_DATA = *addr++;
}
addr += (LCD_WIDTH - width)/2;
}
while (!(LCD2_BLOCK_CTRL & LCD2_BLOCK_READY));
LCD2_BLOCK_CONFIG = 0;
height -= h;
}
}