[PATCH 2/5] iio: imu: adis16400: construct adis data on probe vs static on driver

[Alexandru Ardelean]

This change is done in preparation of adding an `struct adis_timeout` type.
Some ADIS drivers support multiple drivers, with various combinations of
timeouts. Creating static tables for each driver is possible, but that also
creates quite a lot of duplication.

Signed-off-by: Nuno SÃ <nuno.sa@xxxxxxxxxx>
Signed-off-by: Alexandru Ardelean <alexandru.ardelean@xxxxxxxxxx>
---
 drivers/iio/imu/adis16400.c | 71 +++++++++++++++++++++----------------
 1 file changed, 41 insertions(+), 30 deletions(-)

diff --git a/drivers/iio/imu/adis16400.c b/drivers/iio/imu/adis16400.c
index 662cb5367c11..d77bd6792437 100644
--- a/drivers/iio/imu/adis16400.c
+++ b/drivers/iio/imu/adis16400.c
@@ -1077,35 +1077,6 @@ static const char * const adis16400_status_error_msgs[] = {
 	[ADIS16400_DIAG_STAT_POWER_LOW] = "Power supply below 4.75V",
 };
 
-static const struct adis_data adis16400_data = {
-	.msc_ctrl_reg = ADIS16400_MSC_CTRL,
-	.glob_cmd_reg = ADIS16400_GLOB_CMD,
-	.diag_stat_reg = ADIS16400_DIAG_STAT,
-
-	.read_delay = 50,
-	.write_delay = 50,
-
-	.self_test_mask = ADIS16400_MSC_CTRL_MEM_TEST,
-	.startup_delay = ADIS16400_STARTUP_DELAY,
-
-	.status_error_msgs = adis16400_status_error_msgs,
-	.status_error_mask = BIT(ADIS16400_DIAG_STAT_ZACCL_FAIL) |
-		BIT(ADIS16400_DIAG_STAT_YACCL_FAIL) |
-		BIT(ADIS16400_DIAG_STAT_XACCL_FAIL) |
-		BIT(ADIS16400_DIAG_STAT_XGYRO_FAIL) |
-		BIT(ADIS16400_DIAG_STAT_YGYRO_FAIL) |
-		BIT(ADIS16400_DIAG_STAT_ZGYRO_FAIL) |
-		BIT(ADIS16400_DIAG_STAT_ALARM2) |
-		BIT(ADIS16400_DIAG_STAT_ALARM1) |
-		BIT(ADIS16400_DIAG_STAT_FLASH_CHK) |
-		BIT(ADIS16400_DIAG_STAT_SELF_TEST) |
-		BIT(ADIS16400_DIAG_STAT_OVERFLOW) |
-		BIT(ADIS16400_DIAG_STAT_SPI_FAIL) |
-		BIT(ADIS16400_DIAG_STAT_FLASH_UPT) |
-		BIT(ADIS16400_DIAG_STAT_POWER_HIGH) |
-		BIT(ADIS16400_DIAG_STAT_POWER_LOW),
-};
-
 static void adis16400_setup_chan_mask(struct adis16400_state *st)
 {
 	const struct adis16400_chip_info *chip_info = st->variant;
@@ -1120,11 +1091,47 @@ 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_kzalloc(dev, sizeof(struct adis_data), GFP_KERNEL);
+	if (!data)
+		return ERR_PTR(-ENOMEM);
+
+	data->msc_ctrl_reg = ADIS16400_MSC_CTRL;
+	data->glob_cmd_reg = ADIS16400_GLOB_CMD;
+	data->diag_stat_reg = ADIS16400_DIAG_STAT;
+	data->read_delay = 50;
+	data->write_delay = 50;
+	data->self_test_mask = ADIS16400_MSC_CTRL_MEM_TEST;
+	data->status_error_msgs = adis16400_status_error_msgs;
+	data->status_error_mask = BIT(ADIS16400_DIAG_STAT_ZACCL_FAIL) |
+				BIT(ADIS16400_DIAG_STAT_YACCL_FAIL) |
+				BIT(ADIS16400_DIAG_STAT_XACCL_FAIL) |
+				BIT(ADIS16400_DIAG_STAT_XGYRO_FAIL) |
+				BIT(ADIS16400_DIAG_STAT_YGYRO_FAIL) |
+				BIT(ADIS16400_DIAG_STAT_ZGYRO_FAIL) |
+				BIT(ADIS16400_DIAG_STAT_ALARM2) |
+				BIT(ADIS16400_DIAG_STAT_ALARM1) |
+				BIT(ADIS16400_DIAG_STAT_FLASH_CHK) |
+				BIT(ADIS16400_DIAG_STAT_SELF_TEST) |
+				BIT(ADIS16400_DIAG_STAT_OVERFLOW) |
+				BIT(ADIS16400_DIAG_STAT_SPI_FAIL) |
+				BIT(ADIS16400_DIAG_STAT_FLASH_UPT) |
+				BIT(ADIS16400_DIAG_STAT_POWER_HIGH) |
+				BIT(ADIS16400_DIAG_STAT_POWER_LOW);
+
+	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 +1158,11 @@ 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;
 
-- 
2.20.1