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Meizu M3: check LCD_STATUS in the lcd driver instead of using delay loops

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@22090 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Bertrik Sikken 2009-07-30 18:33:17 +00:00
parent a616f49f04
commit 95d043b26d
1 changed files with 10 additions and 2 deletions
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12
firmware/target/arm/s5l8700/meizu-m3/lcd-m3.c
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@ -29,7 +29,9 @@
#include "s5l8700.h"
/*** definitions ***/
#define STAT_BUS_IDLE (1<<8) /* Data bus idle */
#define STAT_FULL (1<<4) /* FIFO full */
#define STAT_READON (1<<0) /* Read operation done */
/** globals **/
static uint8_t lcd_type;
@ -81,9 +83,13 @@ static uint8_t lcd_readdata(void)
static void lcd_writereg(uint32_t reg, uint32_t data)
{
while (LCD_STATUS & STAT_FULL);
LCD_WCMD = reg >> 8;
while (LCD_STATUS & STAT_FULL);
LCD_WCMD = reg & 0xff;
while (LCD_STATUS & STAT_FULL);
LCD_WDATA = data >> 8;
while (LCD_STATUS & STAT_FULL);
LCD_WDATA = data & 0xff;
}
@ -290,10 +296,12 @@ void lcd_update(void)
LCD_WCMD = 0x22;
}
for(p=&lcd_framebuffer[0][0], i=0;i<LCD_WIDTH*LCD_FBHEIGHT;++i, ++p) {
while (LCD_STATUS & STAT_FULL);
LCD_WDATA = RGB_UNPACK_RED(*p);
while (LCD_STATUS & STAT_FULL);
LCD_WDATA = RGB_UNPACK_GREEN(*p);
while (LCD_STATUS & STAT_FULL);
LCD_WDATA = RGB_UNPACK_BLUE(*p);
lcd_sleep(3); /* if data is sent too fast to lcdif, machine freezes */
}
}