[PATCH 4/5] iio: adis: Introduce timeouts structure

From: Alexandru Ardelean
Date: Fri Dec 13 2019 - 11:05:35 EST

From: Nuno SÃ <nuno.sa@xxxxxxxxxx>

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 SÃ <nuno.sa@xxxxxxxxxx>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx>
---
drivers/iio/accel/adis16201.c | 7 +++++
drivers/iio/accel/adis16209.c | 7 +++++
drivers/iio/gyro/adis16136.c | 18 ++++++++++++
drivers/iio/gyro/adis16260.c | 7 +++++
drivers/iio/imu/adis.c | 18 +++++++++---
drivers/iio/imu/adis16400.c | 41 +++++++++++++++++++++++++++
drivers/iio/imu/adis16460.c | 7 +++++
drivers/iio/imu/adis16480.c | 36 +++++++++++++++++++++++
drivers/staging/iio/accel/adis16203.c | 7 +++++
drivers/staging/iio/accel/adis16240.c | 7 +++++
include/linux/iio/imu/adis.h | 13 +++++++++
11 files changed, 164 insertions(+), 4 deletions(-)

diff --git a/drivers/iio/accel/adis16201.c b/drivers/iio/accel/adis16201.c
index c4810c73b2a2..c92d22387b01 100644
--- a/drivers/iio/accel/adis16201.c
+++ b/drivers/iio/accel/adis16201.c
@@ -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) |
diff --git a/drivers/iio/accel/adis16209.c b/drivers/iio/accel/adis16209.c
index 98d77af8a2b0..f5a78fc11919 100644
--- a/drivers/iio/accel/adis16209.c
+++ b/drivers/iio/accel/adis16209.c
@@ -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) |
diff --git a/drivers/iio/gyro/adis16136.c b/drivers/iio/gyro/adis16136.c
index 129de2bd5845..f928a8b42869 100644
--- a/drivers/iio/gyro/adis16136.c
+++ b/drivers/iio/gyro/adis16136.c
@@ -59,6 +59,7 @@
struct adis16136_chip_info {
unsigned int precision;
unsigned int fullscale;
+ const struct adis_timeout *timeouts;
};

struct adis16136 {
@@ -472,22 +473,38 @@ 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,
},
};

@@ -511,6 +528,7 @@ static struct adis_data *adis16136_adis_data_alloc(struct adis16136 *st,
BIT(ADIS16136_DIAG_STAT_SPI_FAIL) |
BIT(ADIS16136_DIAG_STAT_SELF_TEST_FAIL) |
BIT(ADIS16136_DIAG_STAT_FLASH_CHKSUM_FAIL);
+ data->timeouts = st->chip_info->timeouts;

return data;
}
diff --git a/drivers/iio/gyro/adis16260.c b/drivers/iio/gyro/adis16260.c
index 726a0aa321a8..0e3a66a7726d 100644
--- a/drivers/iio/gyro/adis16260.c
+++ b/drivers/iio/gyro/adis16260.c
@@ -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) |
diff --git a/drivers/iio/imu/adis.c b/drivers/iio/imu/adis.c
index c53f3ed3cb97..3e12ad4b71ba 100644
--- a/drivers/iio/imu/adis.c
+++ b/drivers/iio/imu/adis.c
@@ -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;
diff --git a/drivers/iio/imu/adis16400.c b/drivers/iio/imu/adis16400.c
index d77bd6792437..29b28ebc5611 100644
--- a/drivers/iio/imu/adis16400.c
+++ b/drivers/iio/imu/adis16400.c
@@ -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,
}
};

@@ -1122,6 +1162,7 @@ static struct adis_data *adis16400_adis_data_alloc(struct adis16400_state *st,
BIT(ADIS16400_DIAG_STAT_FLASH_UPT) |
BIT(ADIS16400_DIAG_STAT_POWER_HIGH) |
BIT(ADIS16400_DIAG_STAT_POWER_LOW);
+ data->timeouts = st->variant->timeouts;

return data;
}
diff --git a/drivers/iio/imu/adis16460.c b/drivers/iio/imu/adis16460.c
index b55812521537..9539cfe4a259 100644
--- a/drivers/iio/imu/adis16460.c
+++ b/drivers/iio/imu/adis16460.c
@@ -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)
diff --git a/drivers/iio/imu/adis16480.c b/drivers/iio/imu/adis16480.c
index 1edfed83d480..d6adcd4a281b 100644
--- a/drivers/iio/imu/adis16480.c
+++ b/drivers/iio/imu/adis16480.c
@@ -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,
},
};

@@ -1199,6 +1234,7 @@ static struct adis_data *adis16480_adis_data_alloc(struct adis16480 *st,
BIT(ADIS16480_DIAG_STAT_ZMAGN_FAIL) |
BIT(ADIS16480_DIAG_STAT_BARO_FAIL);
data->enable_irq = adis16480_enable_irq;
+ data->timeouts = st->chip_info->timeouts;

return data;
}
diff --git a/drivers/staging/iio/accel/adis16203.c b/drivers/staging/iio/accel/adis16203.c
index 39687139a7d3..3d706ee02df0 100644
--- a/drivers/staging/iio/accel/adis16203.c
+++ b/drivers/staging/iio/accel/adis16203.c
@@ -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) |
diff --git a/drivers/staging/iio/accel/adis16240.c b/drivers/staging/iio/accel/adis16240.c
index a480409090c0..9bba4238100f 100644
--- a/drivers/staging/iio/accel/adis16240.c
+++ b/drivers/staging/iio/accel/adis16240.c
@@ -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) |
diff --git a/include/linux/iio/imu/adis.h b/include/linux/iio/imu/adis.h
index 4b5bc0e06e69..853dc8c8365c 100644
--- a/include/linux/iio/imu/adis.h
+++ b/include/linux/iio/imu/adis.h
@@ -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;
--
2.20.1