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emul: emul_sbs_gauge read/write returns ret code

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To facilitate testing improper reads and writes on various registers,
enable the emul_sbs_gauge reg_read/write handlers to return custom exit
codes.

Signed-off-by: Aaron Massey <aaronmassey@google.com>
This commit is contained in:
Aaron Massey 2022-08-24 16:25:38 -06:00 committed by Carles Cufí
parent df42cf366e
commit 1cff6099f7
1 changed files with 12 additions and 10 deletions
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22
subsys/emul/i2c/emul_sbs_gauge.c
View file

@ -31,7 +31,7 @@ struct sbs_gauge_emul_cfg {
uint16_t addr; uint16_t addr;
}; };
static void reg_write(const struct emul *target, int reg, int val) static int reg_write(const struct emul *target, int reg, int val)
{ {
ARG_UNUSED(target); ARG_UNUSED(target);
@ -39,13 +39,14 @@ static void reg_write(const struct emul *target, int reg, int val)
switch (reg) { switch (reg) {
default: default:
LOG_INF("Unknown write %x", reg); LOG_INF("Unknown write %x", reg);
return -EIO;
} }
return 0;
} }
static int reg_read(const struct emul *target, int reg) static int reg_read(const struct emul *target, int reg, int *val)
{ {
int val;
ARG_UNUSED(target); ARG_UNUSED(target);
switch (reg) { switch (reg) {
@ -61,15 +62,15 @@ static int reg_read(const struct emul *target, int reg)
case SBS_GAUGE_CMD_CYCLE_COUNT: case SBS_GAUGE_CMD_CYCLE_COUNT:
case SBS_GAUGE_CMD_DESIGN_VOLTAGE: case SBS_GAUGE_CMD_DESIGN_VOLTAGE:
/* Arbitrary stub value. */ /* Arbitrary stub value. */
val = 1; *val = 1;
break; break;
default: default:
LOG_ERR("Unknown register 0x%x read", reg); LOG_ERR("Unknown register 0x%x read", reg);
return -EIO; return -EIO;
} }
LOG_INF("read 0x%x = 0x%x", reg, val); LOG_INF("read 0x%x = 0x%x", reg, *val);
return val; return 0;
} }
static int sbs_gauge_emul_transfer_i2c(const struct emul *target, struct i2c_msg *msgs, static int sbs_gauge_emul_transfer_i2c(const struct emul *target, struct i2c_msg *msgs,
@ -79,6 +80,7 @@ static int sbs_gauge_emul_transfer_i2c(const struct emul *target, struct i2c_msg
struct sbs_gauge_emul_data *data; struct sbs_gauge_emul_data *data;
unsigned int val; unsigned int val;
int reg; int reg;
int rc;
data = target->data; data = target->data;
@ -102,7 +104,7 @@ static int sbs_gauge_emul_transfer_i2c(const struct emul *target, struct i2c_msg
if (msgs->flags & I2C_MSG_READ) { if (msgs->flags & I2C_MSG_READ) {
switch (msgs->len - 1) { switch (msgs->len - 1) {
case 1: case 1:
val = reg_read(target, reg); rc = reg_read(target, reg, &val);
msgs->buf[0] = val; msgs->buf[0] = val;
break; break;
default: default:
@ -113,7 +115,7 @@ static int sbs_gauge_emul_transfer_i2c(const struct emul *target, struct i2c_msg
if (msgs->len != 1) { if (msgs->len != 1) {
LOG_ERR("Unexpected msg1 length %d", msgs->len); LOG_ERR("Unexpected msg1 length %d", msgs->len);
} }
reg_write(target, reg, msgs->buf[0]); rc = reg_write(target, reg, msgs->buf[0]);
} }
break; break;
default: default:
@ -121,7 +123,7 @@ static int sbs_gauge_emul_transfer_i2c(const struct emul *target, struct i2c_msg
return -EIO; return -EIO;
} }
return 0; return rc;
} }
static const struct i2c_emul_api sbs_gauge_emul_api_i2c = { static const struct i2c_emul_api sbs_gauge_emul_api_i2c = {