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Moved all code to .c file and indented according to rules

git-svn-id: svn://svn.rockbox.org/rockbox/trunk@134 a1c6a512-1295-4272-9138-f99709370657
This commit is contained in:
Björn Stenberg 2002-04-18 17:42:42 +00:00
parent 82bca1bc89
commit 965401aa6b
2 changed files with 322 additions and 315 deletions

View file

@ -18,9 +18,149 @@
****************************************************************************/ ****************************************************************************/
#include "config.h" #include "config.h"
#include "lcd.h" #include "lcd.h"
#ifndef SIMULATOR
/*
* About /CS,DS,SC,SD
* ------------------
*
* LCD on JBP and JBR uses a SPI protocol to receive orders (SDA and SCK lines)
*
* - /CS -> Chip Selection line :
* 0 : LCD chipset is activated.
* - DS -> Data Selection line, latched at the rising edge
* of the 8th serial clock (*) :
* 0 : instruction register,
* 1 : data register;
* - SC -> Serial Clock line (SDA).
* - SD -> Serial Data line (SCK), latched at the rising edge
* of each serial clock (*).
*
* _ _
* /CS \ /
* \______________________________________________________/
* _____ ____ ____ ____ ____ ____ ____ ____ ____ _____
* SD \/ D7 \/ D6 \/ D5 \/ D4 \/ D3 \/ D2 \/ D1 \/ D0 \/
* _____/\____/\____/\____/\____/\____/\____/\____/\____/\_____
*
* _____ _ _ _ _ _ _ _ ________
* SC \ * \ * \ * \ * \ * \ * \ * \ *
* \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/
* _ _________________________________________________________
* DS \/
* _/\_________________________________________________________
*
*/
/*
* The only way to do logical operations in an atomic way
* on SH1 is using :
*
* or.b/and.b/tst.b/xor.b #imm,@(r0,gbr)
*
* but GCC doesn't generate them at all so some assembly
* codes are needed here.
*
* The Global Base Register gbr is expected to be zero
* and r0 is the address of one register in the on-chip
* peripheral module.
*
*/
/*
* Enter a LCD session :
*
* QI(LCDR) &= ~(LCD_CS|LCD_DS|LCD_SD|LCD_SC);
*/
static void lcd_start (void)
{
asm
("and.b\t%0,@(r0,gbr)"
:
: /* %0 */ "I"(~(LCD_CS|LCD_DS|LCD_SD|LCD_SC)),
/* %1 */ "z"(LCDR));
}
/*
* Leave a LCD session :
*
* QI(LCDR) |= LCD_CS|LCD_RS|LCD_SD|LCD_SC;
*/
static void lcd_stop (void)
{
asm
("or.b\t%0,@(r0,gbr)"
:
: /* %0 */ "I"(LCD_CS|LCD_DS|LCD_SD|LCD_SC),
/* %1 */ "z"(LCDR));
}
static void lcd_byte (int byte,int rs)
/*
* char j = 0x80;
* if (rs)
* do
* {
* QI(LCDR) &= ~(LCD_SC|LCD_SD);
* if (j & byte)
* QI(LCDR) |= LCD_SD;
* QI(LCDR) |= LCD_SC|LCD_DS;
* }
* while ((unsigned char)j >>= 1);
* else
* do
* {
* QI(LCDR) &= ~(LCD_SC|LCD_SD|LCD_DS);
* if (j & byte)
* QI(LCDR) |= LCD_SD;
* QI(LCDR) |= LCD_SC;
* }
* while ((unsigned char)j >>= 1);
*/
{
if (rs > 0)
asm
("shll8\t%0\n"
"0:\n\t"
"and.b\t%2,@(r0,gbr)\n\t"
"shll\t%0\n\t"
"bf\t1f\n\t"
"or.b\t%3,@(r0,gbr)\n"
"1:\n\t"
"or.b\t%4,@(r0,gbr)\n"
"add\t#-1,%1\n\t"
"cmp/pl\t%1\n\t"
"bt\t0b"
:
: /* %0 */ "r"(((unsigned)byte)<<16),
/* %1 */ "r"(8),
/* %2 */ "I"(~(LCD_SC|LCD_SD)),
/* %3 */ "I"(LCD_SD),
/* %4 */ "I"(LCD_SC|LCD_DS),
/* %5 */ "z"(LCDR));
else
asm
("shll8\t%0\n"
"0:\n\t"
"and.b\t%2,@(r0,gbr)\n\t"
"shll\t%0\n\t"
"bf\t1f\n\t"
"or.b\t%3,@(r0,gbr)\n"
"1:\n\t"
"or.b\t%4,@(r0,gbr)\n"
"add\t#-1,%1\n\t"
"cmp/pl\t%1\n\t"
"bt\t0b"
:
: /* %0 */ "r"(((unsigned)byte)<<16),
/* %1 */ "r"(8),
/* %2 */ "I"(~(LCD_SC|LCD_DS|LCD_SD)),
/* %3 */ "I"(LCD_SD),
/* %4 */ "I"(LCD_SC),
/* %5 */ "z"(LCDR));
}
void lcd_data (int data) void lcd_data (int data)
{ {
lcd_byte (data,1); lcd_byte (data,1);
@ -51,6 +191,30 @@ void lcd_copy (void *data,int count)
lcd_data (*((char *)data)++); lcd_data (*((char *)data)++);
} }
static void lcd_goto (int x,int y)
{
lcd_instruction (LCD_CURSOR(x,y));
}
/*** BACKLIGHT ***/
static void lcd_toggle_backlight (void)
{
PAIOR ^= LCD_BL;
}
static void lcd_turn_on_backlight (void)
{
PAIOR |= LCD_BL;
}
static void lcd_turn_off_backlight (void)
{
PAIOR &= ~LCD_BL;
}
/*** ICONS ***/
#endif
#ifdef HAVE_LCD_CHARCELLS #ifdef HAVE_LCD_CHARCELLS
# ifndef JBP_OLD # ifndef JBP_OLD
@ -230,7 +394,7 @@ void lcd_update (void)
} }
} }
static void lcd_write (BOOL command, int value) static void lcd_write (bool command, int value)
{ {
int bit; int bit;

View file

@ -21,8 +21,8 @@
#define __LCD_H__ #define __LCD_H__
#include "sh7034.h" #include "sh7034.h"
#include "system.h"
#include "types.h" #include "types.h"
#include "config.h"
#define LCDR (PBDR+1) #define LCDR (PBDR+1)
@ -137,149 +137,6 @@ void lcd_invertrect (int x, int y, int nx, int ny);
#ifndef SIMULATOR #ifndef SIMULATOR
/*
* About /CS,DS,SC,SD
* ------------------
*
* LCD on JBP and JBR uses a SPI protocol to receive orders (SDA and SCK lines)
*
* - /CS -> Chip Selection line :
* 0 : LCD chipset is activated.
* - DS -> Data Selection line, latched at the rising edge
* of the 8th serial clock (*) :
* 0 : instruction register,
* 1 : data register;
* - SC -> Serial Clock line (SDA).
* - SD -> Serial Data line (SCK), latched at the rising edge
* of each serial clock (*).
*
* _ _
* /CS \ /
* \______________________________________________________/
* _____ ____ ____ ____ ____ ____ ____ ____ ____ _____
* SD \/ D7 \/ D6 \/ D5 \/ D4 \/ D3 \/ D2 \/ D1 \/ D0 \/
* _____/\____/\____/\____/\____/\____/\____/\____/\____/\_____
*
* _____ _ _ _ _ _ _ _ ________
* SC \ * \ * \ * \ * \ * \ * \ * \ *
* \_/ \_/ \_/ \_/ \_/ \_/ \_/ \_/
* _ _________________________________________________________
* DS \/
* _/\_________________________________________________________
*
*/
/*
* The only way to do logical operations in an atomic way
* on SH1 is using :
*
* or.b/and.b/tst.b/xor.b #imm,@(r0,gbr)
*
* but GCC doesn't generate them at all so some assembly
* codes are needed here.
*
* The Global Base Register gbr is expected to be zero
* and r0 is the address of one register in the on-chip
* peripheral module.
*
*/
static inline void lcd_start (void)
/*
* Enter a LCD session :
*
* QI(LCDR) &= ~(LCD_CS|LCD_DS|LCD_SD|LCD_SC);
*/
{
asm
("and.b\t%0,@(r0,gbr)"
:
: /* %0 */ "I"(~(LCD_CS|LCD_DS|LCD_SD|LCD_SC)),
/* %1 */ "z"(LCDR));
}
static inline void lcd_stop (void)
/*
* Leave a LCD session :
*
* QI(LCDR) |= LCD_CS|LCD_RS|LCD_SD|LCD_SC;
*/
{
asm
("or.b\t%0,@(r0,gbr)"
:
: /* %0 */ "I"(LCD_CS|LCD_DS|LCD_SD|LCD_SC),
/* %1 */ "z"(LCDR));
}
static inline void lcd_byte (int byte,int rs)
/*
* char j = 0x80;
* if (rs)
* do
* {
* QI(LCDR) &= ~(LCD_SC|LCD_SD);
* if (j & byte)
* QI(LCDR) |= LCD_SD;
* QI(LCDR) |= LCD_SC|LCD_DS;
* }
* while ((unsigned char)j >>= 1);
* else
* do
* {
* QI(LCDR) &= ~(LCD_SC|LCD_SD|LCD_DS);
* if (j & byte)
* QI(LCDR) |= LCD_SD;
* QI(LCDR) |= LCD_SC;
* }
* while ((unsigned char)j >>= 1);
*/
{
if (rs > 0)
asm
("shll8\t%0\n"
"0:\n\t"
"and.b\t%2,@(r0,gbr)\n\t"
"shll\t%0\n\t"
"bf\t1f\n\t"
"or.b\t%3,@(r0,gbr)\n"
"1:\n\t"
"or.b\t%4,@(r0,gbr)\n"
"add\t#-1,%1\n\t"
"cmp/pl\t%1\n\t"
"bt\t0b"
:
: /* %0 */ "r"(((unsigned)byte)<<16),
/* %1 */ "r"(8),
/* %2 */ "I"(~(LCD_SC|LCD_SD)),
/* %3 */ "I"(LCD_SD),
/* %4 */ "I"(LCD_SC|LCD_DS),
/* %5 */ "z"(LCDR));
else
asm
("shll8\t%0\n"
"0:\n\t"
"and.b\t%2,@(r0,gbr)\n\t"
"shll\t%0\n\t"
"bf\t1f\n\t"
"or.b\t%3,@(r0,gbr)\n"
"1:\n\t"
"or.b\t%4,@(r0,gbr)\n"
"add\t#-1,%1\n\t"
"cmp/pl\t%1\n\t"
"bt\t0b"
:
: /* %0 */ "r"(((unsigned)byte)<<16),
/* %1 */ "r"(8),
/* %2 */ "I"(~(LCD_SC|LCD_DS|LCD_SD)),
/* %3 */ "I"(LCD_SD),
/* %4 */ "I"(LCD_SC),
/* %5 */ "z"(LCDR));
}
#else
/* make a faked lcd_byte() function when simulating */
#define lcd_byte(x,y)
#endif /* SIMULATOR */
extern void lcd_data (int data); extern void lcd_data (int data);
extern void lcd_instruction (int instruction); extern void lcd_instruction (int instruction);
@ -296,22 +153,8 @@ extern void lcd_puthex (unsigned int value,int digits);
extern void lcd_pattern (int which,char const *pattern,int count); extern void lcd_pattern (int which,char const *pattern,int count);
static inline void lcd_goto (int x,int y)
{ lcd_instruction (LCD_CURSOR(x,y)); }
/*** BACKLIGHT ***/
static inline void lcd_toggle_backlight (void)
{ toggle_bit (LCD_BL,PAIOR); }
static inline void lcd_turn_on_backlight (void)
{ set_bit (LCD_BL,PAIOR); }
static inline void lcd_turn_off_backlight (void)
{ clear_bit (LCD_BL,PAIOR); }
/*** ICONS ***/
#endif /* HAVE_LCD_CHARCELLS */ #endif /* HAVE_LCD_CHARCELLS */
#endif #endif /* SIMULATOR */
#endif /* __LCD_H__ */