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authorYuri Tikhonov <yur@emcraft.com>2008-03-24 11:29:14 +0100
committerWolfgang Denk <wd@denx.de>2008-03-25 00:14:46 +0100
commitff2bdfb2c1e073f65c065011f1e18d0a130bd3d8 (patch)
treea5dff9815dbd9d9881655d01fb6bd176342cefce /post/board
parentb38d7fc2f1d27957a810950f07c27f2be353f50f (diff)
downloadu-boot-linaro-stable-ff2bdfb2c1e073f65c065011f1e18d0a130bd3d8.tar.gz
lwmon5 SYSMON POST: fix handling of negative temperatures
Fix errors in the LWMON5 Sysmon POST for negative temperatures. Signed-off-by: Yuri Tikhonov <yur@emcraft.com>
Diffstat (limited to 'post/board')
-rw-r--r--post/board/lwmon5/dspic.c27
-rw-r--r--post/board/lwmon5/sysmon.c33
2 files changed, 36 insertions, 24 deletions
diff --git a/post/board/lwmon5/dspic.c b/post/board/lwmon5/dspic.c
index dbaa0746e..fcbbc6031 100644
--- a/post/board/lwmon5/dspic.c
+++ b/post/board/lwmon5/dspic.c
@@ -59,25 +59,27 @@ int dspic_init_post_test(int flags)
#if CONFIG_POST & CFG_POST_BSPEC2
/* Read a register from the dsPIC. */
-int dspic_read(ushort reg)
+int dspic_read(ushort reg, ushort *data)
{
- uchar buf[2];
+ uchar buf[sizeof(*data)];
+ int rval;
- if (i2c_read(CFG_I2C_DSPIC_IO_ADDR, reg, 2, buf, 2))
- return -1;
+ rval = i2c_read(CFG_I2C_DSPIC_IO_ADDR, reg, sizeof(reg),
+ buf, sizeof(*data));
- return (uint)((buf[0] << 8) | buf[1]);
+ *data = (buf[0] << 8) | buf[1];
+
+ return rval;
}
/* Verify error codes regs, display version */
int dspic_post_test(int flags)
{
- int data;
+ ushort data;
int ret = 0;
post_log("\n");
- data = dspic_read(DSPIC_VERSION_REG);
- if (data == -1) {
+ if (dspic_read(DSPIC_VERSION_REG, &data)) {
post_log("dsPIC : failed read version\n");
ret = 1;
} else {
@@ -85,16 +87,15 @@ int dspic_post_test(int flags)
(data >> 8) & 0xFF, data & 0xFF);
}
- data = dspic_read(DSPIC_POST_ERROR_REG);
- if (data != 0) ret = 1;
- if (data == -1) {
+ if (dspic_read(DSPIC_POST_ERROR_REG, &data)) {
post_log("dsPIC : failed read POST code\n");
} else {
post_log("dsPIC POST code 0x%04X\n", data);
}
+ if (data != 0)
+ ret = 1;
- data = dspic_read(DSPIC_SYS_ERROR_REG);
- if (data == -1) {
+ if (dspic_read(DSPIC_SYS_ERROR_REG, &data)) {
post_log("dsPIC : failed read system error\n");
ret = 1;
} else if (data != 0) {
diff --git a/post/board/lwmon5/sysmon.c b/post/board/lwmon5/sysmon.c
index f7e51a3cf..b1b81c609 100644
--- a/post/board/lwmon5/sysmon.c
+++ b/post/board/lwmon5/sysmon.c
@@ -58,7 +58,7 @@
DECLARE_GLOBAL_DATA_PTR;
/* from dspic.c */
-extern int dspic_read(ushort reg);
+extern int dspic_read(ushort reg, ushort *data);
#define RELOC(x) if (x != NULL) x = (void *) ((ulong) (x) + gd->reloc_off)
@@ -67,6 +67,7 @@ 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 int sysmon_dspic_read_sgn (sysmon_t * this, uint addr);
static void sysmon_backlight_disable (sysmon_table_t * this);
struct sysmon_s
@@ -79,9 +80,13 @@ struct sysmon_s
static sysmon_t sysmon_dspic =
{CFG_I2C_DSPIC_IO_ADDR, sysmon_dspic_init, sysmon_dspic_read};
+static sysmon_t sysmon_dspic_sgn =
+ {CFG_I2C_DSPIC_IO_ADDR, sysmon_dspic_init, sysmon_dspic_read_sgn};
+
static sysmon_t * sysmon_list[] =
{
&sysmon_dspic,
+ &sysmon_dspic_sgn,
NULL
};
@@ -109,17 +114,17 @@ struct sysmon_table_s
static sysmon_table_t sysmon_table[] =
{
- {"Temperature", " C", &sysmon_dspic, NULL, sysmon_backlight_disable,
+ {"Temperature", " C", &sysmon_dspic_sgn, NULL, sysmon_backlight_disable,
1, 1, -32768, 32767, 0xFFFF, 0x8000-40, 0x8000+85, 0,
0x8000-30, 0x8000+80, 0, 0x12BC},
{"+ 5 V", "V", &sysmon_dspic, NULL, NULL,
- 100, 1000, -0x8000, 0x7FFF, 0xFFFF, 0x8000+4750, 0x8000+5250, 0,
- 0x8000+4750, 0x8000+5250, 0, 0x12CA},
+ 100, 1000, 0, 0xFFFF, 0xFFFF, 4750, 5250, 0,
+ 4750, 5250, 0, 0x12CA},
{"+ 5 V standby", "V", &sysmon_dspic, NULL, NULL,
- 100, 1000, -0x8000, 0x7FFF, 0xFFFF, 0x8000+4750, 0x8000+5250, 0,
- 0x8000+4750, 0x8000+5250, 0, 0x12C6},
+ 100, 1000, 0, 0xFFFF, 0xFFFF, 4750, 5250, 0,
+ 4750, 5250, 0, 0x12C6},
};
static int sysmon_table_size = sizeof(sysmon_table) / sizeof(sysmon_table[0]);
@@ -156,9 +161,7 @@ static char *sysmon_unit_value (sysmon_table_t *s, uint val)
static char buf[32];
char *p, sign;
int decimal, frac;
- int unit_val;
-
- unit_val =
+ int unit_val =
s->unit_min + (s->unit_max - s->unit_min) * val / s->val_mask;
if (val == -1)
@@ -194,10 +197,18 @@ static void sysmon_dspic_init (sysmon_t * this)
static int sysmon_dspic_read (sysmon_t * this, uint addr)
{
- int res = dspic_read(addr);
+ ushort data;
+
+ return (dspic_read(addr, &data)) ? -1 : data;
+}
+
+static int sysmon_dspic_read_sgn (sysmon_t * this, uint addr)
+{
+ ushort data;
/* To fit into the table range we should add 0x8000 */
- return (res == -1) ? -1 : (res + 0x8000);
+ return (dspic_read(addr, &data)) ? -1 :
+ (signed short)data + 0x8000;
}
static void sysmon_backlight_disable (sysmon_table_t * this)