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initial take at LCD API

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Nothing is correct at the moment, but basic commands are integrated
into the shell, which will simplifying merging later on for files
that are shared-edit.
This commit is contained in:
bunnie 2014-09-15 10:15:25 +00:00
parent 09600c82c9
commit d21c18d1f0
4 changed files with 142 additions and 0 deletions
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1
Makefile
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@ -18,6 +18,7 @@ SRC_C = \
cmd-spi.c \
cmd-led.c \
cmd-bl.c \
cmd-lcd.c \
emi.c \
irq.c \
main.c \

61
cmd-lcd.c Normal file
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@ -0,0 +1,61 @@
#include <string.h>
#include "bionic.h"
#include "memio.h"
#include "printf.h"
#include "serial.h"
#include "fernvale-lcd.h"
// local implementation of strncmp() because we don't have it as a lib in fernly
static int my_strncmp(const char* s1, const char* s2, size_t n)
{
while(n--) {
if( *s2 == '\0' ) // abort checking if we reach the end of s2
return 0;
if(*s1++!=*s2++)
return *(unsigned char*)(s1 - 1) - *(unsigned char*)(s2 - 1);
}
return 0;
}
int cmd_lcd(int argc, char **argv)
{
uint32_t genarg = 0;
char *subcmd;
if (argc < 1) {
printf("Usage: lcd [subcmd] [arg0]\n");
return -1;
}
subcmd = argv[0];
if (argc == 2 ) {
genarg = _strtoul(argv[1], NULL, 0);
}
printf( "command got: %s\n", subcmd );
if( my_strncmp( subcmd, "su", 8 ) == 0 ) {
// execute setup command
printf( "nothing for now.\n" );
} else if( my_strncmp( subcmd, "dump", 8 ) == 0 ) {
// dump registers
printf( "LCD_PAR0_CMD_PORT_REG: %08x\n", *((volatile uint32_t *) LCD_PAR0_CMD_PORT_REG) );
printf( "LCD_PAR0_DAT_PORT_REG: %08x\n", *((volatile uint32_t *) LCD_PAR0_DAT_PORT_REG) );
printf( "LCD_PAR1_CMD_PORT_REG: %08x\n", *((volatile uint32_t *) LCD_PAR1_CMD_PORT_REG) );
printf( "LCD_PAR1_DAT_PORT_REG: %08x\n", *((volatile uint32_t *) LCD_PAR1_DAT_PORT_REG) );
printf( "LCD_PAR0_CFG_REG: %08x\n", *((volatile uint32_t *) LCD_PAR0_CFG_REG) );
printf( "LCD_PAR1_CFG_REG: %08x\n", *((volatile uint32_t *) LCD_PAR1_CFG_REG) );
printf( "LCD_STATUS_REG: %08x\n", *((volatile uint32_t *) LCD_STATUS_REG) );
printf( "LCD_INT_ENA_REG: %08x\n", *((volatile uint32_t *) LCD_INT_ENA_REG) );
printf( "LCD_INT_STAT_REG: %08x\n", *((volatile uint32_t *) LCD_INT_STAT_REG) );
printf( "LCD_RUN_REG: %08x\n", *((volatile uint32_t *) LCD_RUN_REG) );
printf( "LCD_RESET_REG: %08x\n", *((volatile uint32_t *) LCD_RESET_REG) );
printf( "LCD_PAR_DATA_WIDTH_REG: %08x\n", *((volatile uint32_t *) LCD_PAR_DATA_WIDTH_REG) );
printf( "LCD_TEARING_CON_REG: %08x\n", *((volatile uint32_t *) LCD_TEARING_CON_REG) );
} else {
printf( "lcd commands: su (setup timing), dump (dump registers)\n" );
}
return 0;
}

74
include/fernvale-lcd.h Normal file
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@ -0,0 +1,74 @@
#ifndef __FV_LCD_H__
#define __FV_LCD_H__
// don't take values in here as gospel. some may be incorrect due to
// misinterpertation of reverse engineered values
#define LCD_CTRL_ADDR 0xa0450000
#define LCD_PAR0_CMD_PORT_REG (LCD_CTRL_ADDR + 0x0F00)
#define LCD_PAR0_DAT_PORT_REG (LCD_CTRL_ADDR + 0x0F10)
#define LCD_PAR1_CMD_PORT_REG (LCD_CTRL_ADDR + 0x0F20)
#define LCD_PAR1_DAT_PORT_REG (LCD_CTRL_ADDR + 0x0F30)
#define LCD_PAR0_CFG_REG (LCD_CTRL_ADDR + 0x0030)
#define LCD_PAR1_CFG_REG (LCD_CTRL_ADDR + 0x0034)
#define LCD_PAR_CFG_WR_WAIT_CYC_MASK (0x3F)
#define LCD_PAR_CFG_WR_WAIT_CYC_BIT (0)
#define LCD_PAR_CFG_WR_TSU_MASK (0xF00)
#define LCD_PAR_CFG_WR_TSU_BIT (8)
#define LCD_PAR_CFG_WR_TH_MASK (0xF000)
#define LCD_PAR_CFG_WR_TH_BIT (12)
#define LCD_PAR_CFG_RD_LATENCY_CYC_MASK (0x3F0000)
#define LCD_PAR_CFG_RD_LATENCY_CYC_BIT (16)
#define LCD_PAR_CFG_RD_TSU_MASK (0xF000000)
#define LCD_PAR_CFG_RD_TSU_BIT (24)
#define LCD_PAR_CFG_RD_TH_MASK (0xF0000000)
#define LCD_PAR_CFG_RD_TH_BIT (28)
#define LCD_STATUS_REG (LCD_CTRL_ADDR + 0x0000)
#define LCD_STATUS_RUN_BIT (0x1)
#define LCD_STATUS_WAIT_CMDQ_BIT (0x2)
#define LCD_STATUS_WAIT_HTT_BIT (0x8)
#define LCD_STATUS_TE_PENDING_BIT (0x10)
#define LCD_STATUS_BUSY_BIT (0x20)
#define LCD_STATUS_GMC_REQ_BIT (0x40)
#define LCD_INT_ENA_REG (LCD_CTRL_ADDR + 0x0004)
#define LCD_INT_ENA_TRIG_BIT (0x1)
#define LCD_INT_ENA_REG_TRIG_BIT (0x2)
#define LCD_INT_ENA_CMD_TRIG_BIT (0x4)
#define LCD_INT_ENA_HTT_TRIG_BIT (0x10)
#define LCD_INT_ENA_HSYNC_TRIG_BIT (0x20)
#define LCD_INT_ENA_VSYNC_TRIG_BIT (0x20)
#define LCD_INT_STAT_REG (LCD_CTRL_ADDR + 0x0008)
#define LCD_INT_STAT_DONE_BIT (0x1)
#define LCD_RUN_REG (LCD_CTRL_ADDR + 0x000C)
#define LCD_RUN_BIT (0x8000)
#define LCD_RESET_REG (LCD_CTRL_ADDR + 0x0010)
#define LCD_RESET_BIT (0x1) // check polarity
#define LCD_PAR_DATA_WIDTH_REG (LCD_CTRL_ADDR + 0x003C)
#define LCD_PAR_BUS_WIDTH0_MASK (0x7)
#define LCD_PAR_BUS_WIDTH0_BIT (0)
#define LCD_PAR_BUS_WIDTH1_MASK (0x70)
#define LCD_PAR_BUS_WIDTH1_BIT (4)
#define LCD_PAR_WAIT0_MASK (0xF0000)
#define LCD_PAR_WAIT0_BIT (16)
#define LCD_PAR_WAIT1_MASK (0xF00000)
#define LCD_PAR_WAIT1_BIT (20)
#define LCD_PAR_BUS_WIDTH_8BIT (0) // valid values for LCD_PAR_BUS_WIDTHn
#define LCD_PAR_BUS_WIDTH_9BIT (1)
#define LCD_PAR_BUS_WIDTH_16BIT (2)
#define LCD_PAR_BUS_WIDTH_18BIT (3)
#define LCD_TEARING_CON_REG (LCD_CTRL_ADDR + 0x0050)
#define LCD_TEARING_EN_BIT (0x1)
#define LCD_TEARING_SYNCEDGE_BIT (0x2)
#define LCD_TEARING_SW_FORCE_BIT (0x8000)
#endif /* __FV_LCD_H__ */

6
main.c
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@ -341,6 +341,7 @@ extern int cmd_swi(int argc, char **argv);
extern int cmd_reboot(int argc, char **argv);
extern int cmd_led(int argc, char **argv);
extern int cmd_bl(int argc, char **argv);
extern int cmd_lcd(int argc, char **argv);
static const struct {
int (*func)(int argc, char **argv);
@ -402,6 +403,11 @@ static const struct {
.name = "bl",
.help = "Set the LCD backlight brightness",
},
{
.func = cmd_lcd,
.name = "lcd",
.help = "Manipulate the LCD",
},
};
int cmd_help(int argc, char **argv)