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mirror of https://github.com/edk2-porting/linux-next.git synced 2024-12-23 04:34:11 +08:00

iio: adis: Introduce timeouts structure

The adis library only allows to define a `startup_delay` which for some
devices is enough. However, other devices define different timeouts with
significantly different timings which could lead to devices to not wait
enough time or to wait a lot more than necessary (which is not
efficient). This patch introduces a new timeout struct that must be
passed into `adis_init()`. There are mainly, for now, three timeouts
used. This is also an introductory patch with the goal of refactoring
`adis_initial_startup()`. New driver's (eg: adis16480, adis16460) are
replicating code for the device initial setup. With some changes (being
this the first one) we can pass this to `adis_initial_startup()`.

Signed-off-by: Nuno Sá <nuno.sa@analog.com>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@analog.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
This commit is contained in:
Nuno Sá 2020-01-07 13:17:04 +02:00 committed by Jonathan Cameron
parent 687d39d451
commit 380b107bbf
11 changed files with 227 additions and 7 deletions

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@ -233,6 +233,12 @@ static const char * const adis16201_status_error_msgs[] = {
[ADIS16201_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 2.975V",
};
static const struct adis_timeout adis16201_timeouts = {
.reset_ms = ADIS16201_STARTUP_DELAY_MS,
.sw_reset_ms = ADIS16201_STARTUP_DELAY_MS,
.self_test_ms = ADIS16201_STARTUP_DELAY_MS,
};
static const struct adis_data adis16201_data = {
.read_delay = 20,
.msc_ctrl_reg = ADIS16201_MSC_CTRL_REG,
@ -242,6 +248,7 @@ static const struct adis_data adis16201_data = {
.self_test_mask = ADIS16201_MSC_CTRL_SELF_TEST_EN,
.self_test_no_autoclear = true,
.startup_delay = ADIS16201_STARTUP_DELAY_MS,
.timeouts = &adis16201_timeouts,
.status_error_msgs = adis16201_status_error_msgs,
.status_error_mask = BIT(ADIS16201_DIAG_STAT_SPI_FAIL_BIT) |

View File

@ -243,6 +243,12 @@ static const char * const adis16209_status_error_msgs[] = {
[ADIS16209_STAT_POWER_LOW_BIT] = "Power supply below 2.975V",
};
static const struct adis_timeout adis16209_timeouts = {
.reset_ms = ADIS16209_STARTUP_DELAY_MS,
.self_test_ms = ADIS16209_STARTUP_DELAY_MS,
.sw_reset_ms = ADIS16209_STARTUP_DELAY_MS,
};
static const struct adis_data adis16209_data = {
.read_delay = 30,
.msc_ctrl_reg = ADIS16209_MSC_CTRL_REG,
@ -252,6 +258,7 @@ static const struct adis_data adis16209_data = {
.self_test_mask = ADIS16209_MSC_CTRL_SELF_TEST_EN,
.self_test_no_autoclear = true,
.startup_delay = ADIS16209_STARTUP_DELAY_MS,
.timeouts = &adis16209_timeouts,
.status_error_msgs = adis16209_status_error_msgs,
.status_error_mask = BIT(ADIS16209_STAT_SELFTEST_FAIL_BIT) |

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@ -59,6 +59,7 @@
struct adis16136_chip_info {
unsigned int precision;
unsigned int fullscale;
const struct adis_timeout *timeouts;
};
struct adis16136 {
@ -490,30 +491,63 @@ enum adis16136_id {
ID_ADIS16137,
};
static const struct adis_timeout adis16133_timeouts = {
.reset_ms = 75,
.sw_reset_ms = 75,
.self_test_ms = 50,
};
static const struct adis_timeout adis16136_timeouts = {
.reset_ms = 128,
.sw_reset_ms = 75,
.self_test_ms = 245,
};
static const struct adis16136_chip_info adis16136_chip_info[] = {
[ID_ADIS16133] = {
.precision = IIO_DEGREE_TO_RAD(1200),
.fullscale = 24000,
.timeouts = &adis16133_timeouts,
},
[ID_ADIS16135] = {
.precision = IIO_DEGREE_TO_RAD(300),
.fullscale = 24000,
.timeouts = &adis16133_timeouts,
},
[ID_ADIS16136] = {
.precision = IIO_DEGREE_TO_RAD(450),
.fullscale = 24623,
.timeouts = &adis16136_timeouts,
},
[ID_ADIS16137] = {
.precision = IIO_DEGREE_TO_RAD(1000),
.fullscale = 24609,
.timeouts = &adis16136_timeouts,
},
};
static struct adis_data *adis16136_adis_data_alloc(struct adis16136 *st,
struct device *dev)
{
struct adis_data *data;
data = devm_kmalloc(dev, sizeof(struct adis_data), GFP_KERNEL);
if (!data)
return ERR_PTR(-ENOMEM);
memcpy(data, &adis16136_data, sizeof(*data));
data->timeouts = st->chip_info->timeouts;
return data;
}
static int adis16136_probe(struct spi_device *spi)
{
const struct spi_device_id *id = spi_get_device_id(spi);
struct adis16136 *adis16136;
struct iio_dev *indio_dev;
const struct adis_data *adis16136_data;
int ret;
indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*adis16136));
@ -532,7 +566,11 @@ static int adis16136_probe(struct spi_device *spi)
indio_dev->info = &adis16136_info;
indio_dev->modes = INDIO_DIRECT_MODE;
ret = adis_init(&adis16136->adis, indio_dev, spi, &adis16136_data);
adis16136_data = adis16136_adis_data_alloc(adis16136, &spi->dev);
if (IS_ERR(adis16136_data))
return PTR_ERR(adis16136_data);
ret = adis_init(&adis16136->adis, indio_dev, spi, adis16136_data);
if (ret)
return ret;

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@ -332,6 +332,12 @@ static const char * const adis1620_status_error_msgs[] = {
[ADIS16260_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 4.75",
};
static const struct adis_timeout adis16260_timeouts = {
.reset_ms = ADIS16260_STARTUP_DELAY,
.sw_reset_ms = ADIS16260_STARTUP_DELAY,
.self_test_ms = ADIS16260_STARTUP_DELAY,
};
static const struct adis_data adis16260_data = {
.write_delay = 30,
.read_delay = 30,
@ -341,6 +347,7 @@ static const struct adis_data adis16260_data = {
.self_test_mask = ADIS16260_MSC_CTRL_MEM_TEST,
.startup_delay = ADIS16260_STARTUP_DELAY,
.timeouts = &adis16260_timeouts,
.status_error_msgs = adis1620_status_error_msgs,
.status_error_mask = BIT(ADIS16260_DIAG_STAT_FLASH_CHK_BIT) |

View File

@ -317,19 +317,25 @@ EXPORT_SYMBOL_GPL(__adis_check_status);
int __adis_reset(struct adis *adis)
{
int ret;
const struct adis_timeout *timeouts = adis->data->timeouts;
ret = __adis_write_reg_8(adis, adis->data->glob_cmd_reg,
ADIS_GLOB_CMD_SW_RESET);
if (ret)
if (ret) {
dev_err(&adis->spi->dev, "Failed to reset device: %d\n", ret);
return ret;
}
return ret;
msleep(timeouts->sw_reset_ms);
return 0;
}
EXPORT_SYMBOL_GPL(__adis_reset);
static int adis_self_test(struct adis *adis)
{
int ret;
const struct adis_timeout *timeouts = adis->data->timeouts;
ret = __adis_write_reg_16(adis, adis->data->msc_ctrl_reg,
adis->data->self_test_mask);
@ -339,7 +345,7 @@ static int adis_self_test(struct adis *adis)
return ret;
}
msleep(adis->data->startup_delay);
msleep(timeouts->self_test_ms);
ret = __adis_check_status(adis);
@ -368,7 +374,6 @@ int adis_initial_startup(struct adis *adis)
if (ret) {
dev_err(&adis->spi->dev, "Self-test failed, trying reset.\n");
__adis_reset(adis);
msleep(adis->data->startup_delay);
ret = adis_self_test(adis);
if (ret) {
dev_err(&adis->spi->dev, "Second self-test failed, giving up.\n");
@ -444,6 +449,11 @@ EXPORT_SYMBOL_GPL(adis_single_conversion);
int adis_init(struct adis *adis, struct iio_dev *indio_dev,
struct spi_device *spi, const struct adis_data *data)
{
if (!data || !data->timeouts) {
dev_err(&spi->dev, "No config data or timeouts not defined!\n");
return -EINVAL;
}
mutex_init(&adis->state_lock);
adis->spi = spi;
adis->data = data;

View File

@ -156,6 +156,7 @@ struct adis16400_state;
struct adis16400_chip_info {
const struct iio_chan_spec *channels;
const struct adis_timeout *timeouts;
const int num_channels;
const long flags;
unsigned int gyro_scale_micro;
@ -929,6 +930,36 @@ static const struct iio_chan_spec adis16334_channels[] = {
IIO_CHAN_SOFT_TIMESTAMP(ADIS16400_SCAN_TIMESTAMP),
};
static const struct adis_timeout adis16300_timeouts = {
.reset_ms = ADIS16400_STARTUP_DELAY,
.sw_reset_ms = ADIS16400_STARTUP_DELAY,
.self_test_ms = ADIS16400_STARTUP_DELAY,
};
static const struct adis_timeout adis16362_timeouts = {
.reset_ms = 130,
.sw_reset_ms = 130,
.self_test_ms = 12,
};
static const struct adis_timeout adis16400_timeouts = {
.reset_ms = 170,
.sw_reset_ms = 170,
.self_test_ms = 12,
};
static const struct adis_timeout adis16445_timeouts = {
.reset_ms = 55,
.sw_reset_ms = 55,
.self_test_ms = 16,
};
static const struct adis_timeout adis16448_timeouts = {
.reset_ms = 90,
.sw_reset_ms = 90,
.self_test_ms = 45,
};
static struct adis16400_chip_info adis16400_chips[] = {
[ADIS16300] = {
.channels = adis16300_channels,
@ -941,6 +972,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
.temp_offset = 25000000 / 140000, /* 25 C = 0x00 */
.set_freq = adis16400_set_freq,
.get_freq = adis16400_get_freq,
.timeouts = &adis16300_timeouts,
},
[ADIS16334] = {
.channels = adis16334_channels,
@ -964,6 +996,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
.flags = ADIS16400_NO_BURST | ADIS16400_HAS_SLOW_MODE,
.set_freq = adis16400_set_freq,
.get_freq = adis16400_get_freq,
.timeouts = &adis16300_timeouts,
},
[ADIS16360] = {
.channels = adis16350_channels,
@ -976,6 +1009,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
.temp_offset = 25000000 / 136000, /* 25 C = 0x00 */
.set_freq = adis16400_set_freq,
.get_freq = adis16400_get_freq,
.timeouts = &adis16300_timeouts,
},
[ADIS16362] = {
.channels = adis16350_channels,
@ -988,6 +1022,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
.temp_offset = 25000000 / 136000, /* 25 C = 0x00 */
.set_freq = adis16400_set_freq,
.get_freq = adis16400_get_freq,
.timeouts = &adis16362_timeouts,
},
[ADIS16364] = {
.channels = adis16350_channels,
@ -1000,6 +1035,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
.temp_offset = 25000000 / 136000, /* 25 C = 0x00 */
.set_freq = adis16400_set_freq,
.get_freq = adis16400_get_freq,
.timeouts = &adis16362_timeouts,
},
[ADIS16367] = {
.channels = adis16350_channels,
@ -1012,6 +1048,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
.temp_offset = 25000000 / 136000, /* 25 C = 0x00 */
.set_freq = adis16400_set_freq,
.get_freq = adis16400_get_freq,
.timeouts = &adis16300_timeouts,
},
[ADIS16400] = {
.channels = adis16400_channels,
@ -1023,6 +1060,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
.temp_offset = 25000000 / 140000, /* 25 C = 0x00 */
.set_freq = adis16400_set_freq,
.get_freq = adis16400_get_freq,
.timeouts = &adis16400_timeouts,
},
[ADIS16445] = {
.channels = adis16445_channels,
@ -1036,6 +1074,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
.temp_offset = 31000000 / 73860, /* 31 C = 0x00 */
.set_freq = adis16334_set_freq,
.get_freq = adis16334_get_freq,
.timeouts = &adis16445_timeouts,
},
[ADIS16448] = {
.channels = adis16448_channels,
@ -1049,6 +1088,7 @@ static struct adis16400_chip_info adis16400_chips[] = {
.temp_offset = 31000000 / 73860, /* 31 C = 0x00 */
.set_freq = adis16334_set_freq,
.get_freq = adis16334_get_freq,
.timeouts = &adis16448_timeouts,
}
};
@ -1120,11 +1160,28 @@ static void adis16400_setup_chan_mask(struct adis16400_state *st)
}
}
static struct adis_data *adis16400_adis_data_alloc(struct adis16400_state *st,
struct device *dev)
{
struct adis_data *data;
data = devm_kmalloc(dev, sizeof(struct adis_data), GFP_KERNEL);
if (!data)
return ERR_PTR(-ENOMEM);
memcpy(data, &adis16400_data, sizeof(*data));
data->timeouts = st->variant->timeouts;
return data;
}
static int adis16400_probe(struct spi_device *spi)
{
struct adis16400_state *st;
struct iio_dev *indio_dev;
int ret;
const struct adis_data *adis16400_data;
indio_dev = devm_iio_device_alloc(&spi->dev, sizeof(*st));
if (indio_dev == NULL)
@ -1151,7 +1208,11 @@ static int adis16400_probe(struct spi_device *spi)
st->adis.burst->extra_len = sizeof(u16);
}
ret = adis_init(&st->adis, indio_dev, spi, &adis16400_data);
adis16400_data = adis16400_adis_data_alloc(st, &spi->dev);
if (IS_ERR(adis16400_data))
return PTR_ERR(adis16400_data);
ret = adis_init(&st->adis, indio_dev, spi, adis16400_data);
if (ret)
return ret;

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@ -383,6 +383,12 @@ static const char * const adis16460_status_error_msgs[] = {
[ADIS16460_DIAG_STAT_FLASH_UPT] = "Flash update failure",
};
static const struct adis_timeout adis16460_timeouts = {
.reset_ms = 225,
.sw_reset_ms = 225,
.self_test_ms = 10,
};
static const struct adis_data adis16460_data = {
.diag_stat_reg = ADIS16460_REG_DIAG_STAT,
.glob_cmd_reg = ADIS16460_REG_GLOB_CMD,
@ -398,6 +404,7 @@ static const struct adis_data adis16460_data = {
BIT(ADIS16460_DIAG_STAT_SPI_COMM) |
BIT(ADIS16460_DIAG_STAT_FLASH_UPT),
.enable_irq = adis16460_enable_irq,
.timeouts = &adis16460_timeouts,
};
static int adis16460_probe(struct spi_device *spi)

View File

@ -138,6 +138,7 @@ struct adis16480_chip_info {
unsigned int max_dec_rate;
const unsigned int *filter_freqs;
bool has_pps_clk_mode;
const struct adis_timeout *timeouts;
};
enum adis16480_int_pin {
@ -794,6 +795,30 @@ enum adis16480_variant {
ADIS16497_3,
};
static const struct adis_timeout adis16485_timeouts = {
.reset_ms = 560,
.sw_reset_ms = 120,
.self_test_ms = 12,
};
static const struct adis_timeout adis16480_timeouts = {
.reset_ms = 560,
.sw_reset_ms = 560,
.self_test_ms = 12,
};
static const struct adis_timeout adis16495_timeouts = {
.reset_ms = 170,
.sw_reset_ms = 130,
.self_test_ms = 40,
};
static const struct adis_timeout adis16495_1_timeouts = {
.reset_ms = 250,
.sw_reset_ms = 210,
.self_test_ms = 20,
};
static const struct adis16480_chip_info adis16480_chip_info[] = {
[ADIS16375] = {
.channels = adis16485_channels,
@ -812,6 +837,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
.int_clk = 2460000,
.max_dec_rate = 2048,
.filter_freqs = adis16480_def_filter_freqs,
.timeouts = &adis16485_timeouts,
},
[ADIS16480] = {
.channels = adis16480_channels,
@ -824,6 +850,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
.int_clk = 2460000,
.max_dec_rate = 2048,
.filter_freqs = adis16480_def_filter_freqs,
.timeouts = &adis16480_timeouts,
},
[ADIS16485] = {
.channels = adis16485_channels,
@ -836,6 +863,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
.int_clk = 2460000,
.max_dec_rate = 2048,
.filter_freqs = adis16480_def_filter_freqs,
.timeouts = &adis16485_timeouts,
},
[ADIS16488] = {
.channels = adis16480_channels,
@ -848,6 +876,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
.int_clk = 2460000,
.max_dec_rate = 2048,
.filter_freqs = adis16480_def_filter_freqs,
.timeouts = &adis16485_timeouts,
},
[ADIS16495_1] = {
.channels = adis16485_channels,
@ -861,6 +890,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
.max_dec_rate = 4250,
.filter_freqs = adis16495_def_filter_freqs,
.has_pps_clk_mode = true,
.timeouts = &adis16495_1_timeouts,
},
[ADIS16495_2] = {
.channels = adis16485_channels,
@ -874,6 +904,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
.max_dec_rate = 4250,
.filter_freqs = adis16495_def_filter_freqs,
.has_pps_clk_mode = true,
.timeouts = &adis16495_1_timeouts,
},
[ADIS16495_3] = {
.channels = adis16485_channels,
@ -887,6 +918,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
.max_dec_rate = 4250,
.filter_freqs = adis16495_def_filter_freqs,
.has_pps_clk_mode = true,
.timeouts = &adis16495_1_timeouts,
},
[ADIS16497_1] = {
.channels = adis16485_channels,
@ -900,6 +932,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
.max_dec_rate = 4250,
.filter_freqs = adis16495_def_filter_freqs,
.has_pps_clk_mode = true,
.timeouts = &adis16495_1_timeouts,
},
[ADIS16497_2] = {
.channels = adis16485_channels,
@ -913,6 +946,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
.max_dec_rate = 4250,
.filter_freqs = adis16495_def_filter_freqs,
.has_pps_clk_mode = true,
.timeouts = &adis16495_1_timeouts,
},
[ADIS16497_3] = {
.channels = adis16485_channels,
@ -926,6 +960,7 @@ static const struct adis16480_chip_info adis16480_chip_info[] = {
.max_dec_rate = 4250,
.filter_freqs = adis16495_def_filter_freqs,
.has_pps_clk_mode = true,
.timeouts = &adis16495_1_timeouts,
},
};
@ -1195,9 +1230,26 @@ static int adis16480_get_ext_clocks(struct adis16480 *st)
return 0;
}
static struct adis_data *adis16480_adis_data_alloc(struct adis16480 *st,
struct device *dev)
{
struct adis_data *data;
data = devm_kmalloc(dev, sizeof(struct adis_data), GFP_KERNEL);
if (!data)
return ERR_PTR(-ENOMEM);
memcpy(data, &adis16480_data, sizeof(*data));
data->timeouts = st->chip_info->timeouts;
return data;
}
static int adis16480_probe(struct spi_device *spi)
{
const struct spi_device_id *id = spi_get_device_id(spi);
const struct adis_data *adis16480_data;
struct iio_dev *indio_dev;
struct adis16480 *st;
int ret;
@ -1218,7 +1270,11 @@ static int adis16480_probe(struct spi_device *spi)
indio_dev->info = &adis16480_info;
indio_dev->modes = INDIO_DIRECT_MODE;
ret = adis_init(&st->adis, indio_dev, spi, &adis16480_data);
adis16480_data = adis16480_adis_data_alloc(st, &spi->dev);
if (IS_ERR(adis16480_data))
return PTR_ERR(adis16480_data);
ret = adis_init(&st->adis, indio_dev, spi, adis16480_data);
if (ret)
return ret;

View File

@ -237,6 +237,12 @@ static const char * const adis16203_status_error_msgs[] = {
[ADIS16203_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 2.975V",
};
static const struct adis_timeout adis16203_timeouts = {
.reset_ms = ADIS16203_STARTUP_DELAY,
.sw_reset_ms = ADIS16203_STARTUP_DELAY,
.self_test_ms = ADIS16203_STARTUP_DELAY
};
static const struct adis_data adis16203_data = {
.read_delay = 20,
.msc_ctrl_reg = ADIS16203_MSC_CTRL,
@ -246,6 +252,7 @@ static const struct adis_data adis16203_data = {
.self_test_mask = ADIS16203_MSC_CTRL_SELF_TEST_EN,
.self_test_no_autoclear = true,
.startup_delay = ADIS16203_STARTUP_DELAY,
.timeouts = &adis16203_timeouts,
.status_error_msgs = adis16203_status_error_msgs,
.status_error_mask = BIT(ADIS16203_DIAG_STAT_SELFTEST_FAIL_BIT) |

View File

@ -359,6 +359,12 @@ static const char * const adis16240_status_error_msgs[] = {
[ADIS16240_DIAG_STAT_POWER_LOW_BIT] = "Power supply below 2.225V",
};
static const struct adis_timeout adis16240_timeouts = {
.reset_ms = ADIS16240_STARTUP_DELAY,
.sw_reset_ms = ADIS16240_STARTUP_DELAY,
.self_test_ms = ADIS16240_STARTUP_DELAY,
};
static const struct adis_data adis16240_data = {
.write_delay = 35,
.read_delay = 35,
@ -369,6 +375,7 @@ static const struct adis_data adis16240_data = {
.self_test_mask = ADIS16240_MSC_CTRL_SELF_TEST_EN,
.self_test_no_autoclear = true,
.startup_delay = ADIS16240_STARTUP_DELAY,
.timeouts = &adis16240_timeouts,
.status_error_msgs = adis16240_status_error_msgs,
.status_error_mask = BIT(ADIS16240_DIAG_STAT_PWRON_FAIL_BIT) |

View File

@ -22,6 +22,17 @@
struct adis;
struct adis_burst;
/**
* struct adis_timeouts - ADIS chip variant timeouts
* @reset_ms - Wait time after rst pin goes inactive
* @sw_reset_ms - Wait time after sw reset command
* @self_test_ms - Wait time after self test command
*/
struct adis_timeout {
u16 reset_ms;
u16 sw_reset_ms;
u16 self_test_ms;
};
/**
* struct adis_data - ADIS chip variant specific data
* @read_delay: SPI delay for read operations in us
@ -32,6 +43,7 @@ struct adis_burst;
* @diag_stat_reg: Register address of the DIAG_STAT register
* @status_error_msgs: Array of error messgaes
* @status_error_mask:
* @timeouts: Chip specific delays
*/
struct adis_data {
unsigned int read_delay;
@ -45,6 +57,7 @@ struct adis_data {
unsigned int self_test_mask;
bool self_test_no_autoclear;
unsigned int startup_delay;
const struct adis_timeout *timeouts;
const char * const *status_error_msgs;
unsigned int status_error_mask;