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Iriver: atomic I/O port manipulation macros, to avoid interference between normal and interrupt code. Todo: all other places that do port manipulation on ports which may also be changed from an intterupt should use that as well. It even decreases binary size a bit.

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git-svn-id: svn://svn.rockbox.org/rockbox/trunk@6985 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Jens Arnold 2005-07-02 12:18:10 +00:00
parent 8102f3da27
commit a8cadd8181
3 changed files with 57 additions and 34 deletions
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34
firmware/drivers/lcd-h100-remote.c
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@ -50,14 +50,14 @@
#define LCD_REMOTE_CNTL_HIGHCOL 0x10 /* Upper column address */
#define LCD_REMOTE_CNTL_LOWCOL 0x00 /* Lower column address */
#define CS_LO GPIO1_OUT &= ~0x00000004
#define CS_HI GPIO1_OUT |= 0x00000004
#define CLK_LO GPIO_OUT &= ~0x10000000
#define CLK_HI GPIO_OUT |= 0x10000000
#define DATA_LO GPIO1_OUT &= ~0x00040000
#define DATA_HI GPIO1_OUT |= 0x00040000
#define RS_LO GPIO_OUT &= ~0x00010000
#define RS_HI GPIO_OUT |= 0x00010000
#define CS_LO and_l(~0x00000004, &GPIO1_OUT)
#define CS_HI or_l(0x00000004, &GPIO1_OUT)
#define CLK_LO and_l(~0x10000000, &GPIO_OUT)
#define CLK_HI or_l(0x10000000, &GPIO_OUT)
#define DATA_LO and_l(~0x00040000, &GPIO1_OUT)
#define DATA_HI or_l(0x00040000, &GPIO1_OUT)
#define RS_LO and_l(~0x00010000, &GPIO_OUT)
#define RS_HI or_l(0x00010000, &GPIO_OUT)
/* delay loop */
#define DELAY do { int _x; for(_x=0;_x<3;_x++);} while (0)
@ -115,12 +115,12 @@ static const char scroll_tick_table[16] = {
#ifndef SIMULATOR
void lcd_remote_backlight_on(void)
{
GPIO_OUT &= ~0x00000800;
and_l(~0x00000800, &GPIO_OUT);
}
void lcd_remote_backlight_off(void)
{
GPIO_OUT |= 0x00000800;
or_l(0x00000800, &GPIO_OUT);
}
void lcd_remote_write_command(int cmd)
@ -363,14 +363,14 @@ static void remote_tick(void)
/* Initialise ports and kick off monitor */
void lcd_remote_init(void)
{
GPIO_FUNCTION |= 0x10010800; /* GPIO11: Backlight
GPIO16: RS
GPIO28: CLK */
or_l(0x10010800, &GPIO_FUNCTION); /* GPIO11: Backlight
GPIO16: RS
GPIO28: CLK */
GPIO1_FUNCTION |= 0x00040004; /* GPIO34: CS
GPIO50: Data */
GPIO_ENABLE |= 0x10010800;
GPIO1_ENABLE |= 0x00040004;
or_l(0x00040004, &GPIO1_FUNCTION); /* GPIO34: CS
GPIO50: Data */
or_l(0x10010800, &GPIO_ENABLE);
or_l(0x00040004, &GPIO1_ENABLE);
lcd_remote_clear_display();