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Fix backlight in the lwmon5 POST. 

Backlight was switched on even when temperature was too low.

Signed-off-by: Dmitry Rakhchev <rda@emcraft.com>
Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
This commit is contained in:
Yuri Tikhonov 2008-03-18 13:27:57 +01:00 committed by Wolfgang Denk
parent 3d61018643
commit 46bc0a9387
3 changed files with 29 additions and 38 deletions
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24
board/lwmon5/lwmon5.c
View File

@ -567,11 +567,13 @@ unsigned int board_video_init (void)
return CFG_LIME_BASE_0;
}
void board_backlight_switch (int flag)
#define DEFAULT_BRIGHTNESS 0x64
static void board_backlight_brightness(int brightness)
{
if (flag) {
if (brightness > 0) {
/* pwm duty, lamp on */
out_be32((void *)(CFG_FPGA_BASE_0 + 0x00000024), 0x64);
out_be32((void *)(CFG_FPGA_BASE_0 + 0x00000024), brightness);
out_be32((void *)(CFG_FPGA_BASE_0 + 0x00000020), 0x701);
} else {
/* lamp off */
@ -580,6 +582,22 @@ void board_backlight_switch (int flag)
}
}
void board_backlight_switch (int flag)
{
char * param;
int rc;
if (flag) {
param = getenv("brightness");
rc = param ? simple_strtol(param, NULL, 10) : -1;
if (rc < 0)
rc = DEFAULT_BRIGHTNESS;
} else {
rc = 0;
}
board_backlight_brightness(rc);
}
#if defined(CONFIG_CONSOLE_EXTRA_INFO)
/*
* Return text to be printed besides the logo.

10
post/board/lwmon5/fpga.c
View File

@ -41,16 +41,6 @@ DECLARE_GLOBAL_DATA_PTR;
#define FPGA_RAM_END 0xC4203FFF
#define FPGA_STAT 0xC400000C
#define FPGA_PWM_CTRL_REG 0xC4000020
#define FPGA_PWM_TV_REG 0xC4000024
/* Turn on backlight, set brightness */
void fpga_backlight_enable(int pwm)
{
out_be16((void *)FPGA_PWM_CTRL_REG, 0x0701);
out_be16((void *)FPGA_PWM_TV_REG, pwm);
}
#if CONFIG_POST & CFG_POST_BSPEC3
static int one_scratch_test(uint value)

33
post/board/lwmon5/sysmon.c
View File

@ -49,18 +49,16 @@
#include <watchdog.h>
#include <i2c.h>
#if defined(CONFIG_VIDEO)
#include <mb862xx.h>
#endif
#if CONFIG_POST & CFG_POST_SYSMON
DECLARE_GLOBAL_DATA_PTR;
#define DEFAULT_BRIGHTNESS 50
/* from dspic.c */
extern int dspic_read(ushort reg);
/* from fpga.c */
extern void fpga_backlight_enable(int v);
static int sysmon_temp_invalid;
#define RELOC(x) if (x != NULL) x = (void *) ((ulong) (x) + gd->reloc_off)
@ -70,7 +68,6 @@ typedef struct sysmon_table_s sysmon_table_t;
static void sysmon_dspic_init (sysmon_t * this);
static int sysmon_dspic_read (sysmon_t * this, uint addr);
static void sysmon_backlight_disable (sysmon_table_t * this);
static void sysmon_backlight_enable (sysmon_table_t * this);
struct sysmon_s
{
@ -120,7 +117,7 @@ static sysmon_table_t sysmon_table[] =
100, 1000, -0x8000, 0x7FFF, 0xFFFF, 0x8000+4750, 0x8000+5250, 0,
0x8000+4750, 0x8000+5250, 0, 0x12CA},
{"+ 5 V standby", "V", &sysmon_dspic, NULL, sysmon_backlight_enable,
{"+ 5 V standby", "V", &sysmon_dspic, NULL, NULL,
100, 1000, -0x8000, 0x7FFF, 0xFFFF, 0x8000+4750, 0x8000+5250, 0,
0x8000+4750, 0x8000+5250, 0, 0x12C6},
};
@ -205,23 +202,9 @@ static int sysmon_dspic_read (sysmon_t * this, uint addr)
static void sysmon_backlight_disable (sysmon_table_t * this)
{
if (!this->val_valid_alt)
sysmon_temp_invalid = 1;
}
static void sysmon_backlight_enable (sysmon_table_t * this)
{
char * param;
int rc;
if (!sysmon_temp_invalid) {
param = getenv("brightness");
rc = param ? simple_strtol(param, NULL, 10) : -1;
if (rc >= 0)
fpga_backlight_enable(rc);
else
fpga_backlight_enable(DEFAULT_BRIGHTNESS);
}
#if defined(CONFIG_VIDEO)
board_backlight_switch(this->val_valid_alt);
#endif
}
int sysmon_post_test (int flags)