[PATCH AUTOSEL 5.1 16/95] staging:iio:ad7150: fix threshold mode config bit

[PATCH AUTOSEL 5.1 16/95] staging:iio:ad7150: fix threshold mode config bit

[Sasha Levin]

From: Melissa Wen <melissa.srw@gmail.com>

[ Upstream commit df4d737ee4d7205aaa6275158aeebff87fd14488 ]

According to the AD7150 configuration register description, bit 7 assumes
value 1 when the threshold mode is fixed and 0 when it is adaptive,
however, the operation that identifies this mode was considering the
opposite values.

This patch renames the boolean variable to describe it correctly and
properly replaces it in the places where it is used.

Fixes: 531efd6aa0991 ("staging:iio:adc:ad7150: chan_spec conv + i2c_smbus commands + drop unused poweroff timeout control.")
Signed-off-by: Melissa Wen <melissa.srw@gmail.com>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/staging/iio/cdc/ad7150.c | 19 +++++++++++--------
 1 file changed, 11 insertions(+), 8 deletions(-)

diff --git a/drivers/staging/iio/cdc/ad7150.c b/drivers/staging/iio/cdc/ad7150.c
index 24f74ce60f80..14596aa7eaf1 100644
--- a/drivers/staging/iio/cdc/ad7150.c
+++ b/drivers/staging/iio/cdc/ad7150.c
@@ -6,6 +6,7 @@
  * Licensed under the GPL-2 or later.
  */
 
+#include <linux/bitfield.h>
 #include <linux/interrupt.h>
 #include <linux/device.h>
 #include <linux/kernel.h>
@@ -131,7 +132,7 @@ static int ad7150_read_event_config(struct iio_dev *indio_dev,
 {
 	int ret;
 	u8 threshtype;
-	bool adaptive;
+	bool thrfixed;
 	struct ad7150_chip_info *chip = iio_priv(indio_dev);
 
 	ret = i2c_smbus_read_byte_data(chip->client, AD7150_CFG);
@@ -139,21 +140,23 @@ static int ad7150_read_event_config(struct iio_dev *indio_dev,
 		return ret;
 
 	threshtype = (ret >> 5) & 0x03;
-	adaptive = !!(ret & 0x80);
+
+	/*check if threshold mode is fixed or adaptive*/
+	thrfixed = FIELD_GET(AD7150_CFG_FIX, ret);
 
 	switch (type) {
 	case IIO_EV_TYPE_MAG_ADAPTIVE:
 		if (dir == IIO_EV_DIR_RISING)
-			return adaptive && (threshtype == 0x1);
-		return adaptive && (threshtype == 0x0);
+			return !thrfixed && (threshtype == 0x1);
+		return !thrfixed && (threshtype == 0x0);
 	case IIO_EV_TYPE_THRESH_ADAPTIVE:
 		if (dir == IIO_EV_DIR_RISING)
-			return adaptive && (threshtype == 0x3);
-		return adaptive && (threshtype == 0x2);
+			return !thrfixed && (threshtype == 0x3);
+		return !thrfixed && (threshtype == 0x2);
 	case IIO_EV_TYPE_THRESH:
 		if (dir == IIO_EV_DIR_RISING)
-			return !adaptive && (threshtype == 0x1);
-		return !adaptive && (threshtype == 0x0);
+			return thrfixed && (threshtype == 0x1);
+		return thrfixed && (threshtype == 0x0);
 	default:
 		break;
 	}
-- 
2.20.1

[PATCH AUTOSEL 5.1 17/95] iio: imu: st_lsm6dsx: fix PM support for st_lsm6dsx i2c controller

[Sasha Levin]

From: Lorenzo Bianconi <lorenzo@kernel.org>

[ Upstream commit bce0d57db388cdb1c1931d0aa7d31c77b590e0f0 ]

Properly suspend/resume i2c slaves connected to st_lsm6dsx master
controller if the CPU goes in suspended state

Fixes: c91c1c844ebd ("imu: st_lsm6dsx: add i2c embedded controller support")
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h      |  2 ++
 drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c | 25 +++++++++++++-------
 2 files changed, 19 insertions(+), 8 deletions(-)

diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
index d1d8d07a0714..83425b7b580c 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx.h
@@ -265,6 +265,7 @@ struct st_lsm6dsx_sensor {
  * @conf_lock: Mutex to prevent concurrent FIFO configuration update.
  * @page_lock: Mutex to prevent concurrent memory page configuration.
  * @fifo_mode: FIFO operating mode supported by the device.
+ * @suspend_mask: Suspended sensor bitmask.
  * @enable_mask: Enabled sensor bitmask.
  * @ts_sip: Total number of timestamp samples in a given pattern.
  * @sip: Total number of samples (acc/gyro/ts) in a given pattern.
@@ -282,6 +283,7 @@ struct st_lsm6dsx_hw {
 	struct mutex page_lock;
 
 	enum st_lsm6dsx_fifo_mode fifo_mode;
+	u8 suspend_mask;
 	u8 enable_mask;
 	u8 ts_sip;
 	u8 sip;
diff --git a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
index 12e29dda9b98..96986d84e418 100644
--- a/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
+++ b/drivers/iio/imu/st_lsm6dsx/st_lsm6dsx_core.c
@@ -1023,8 +1023,6 @@ static int __maybe_unused st_lsm6dsx_suspend(struct device *dev)
 {
 	struct st_lsm6dsx_hw *hw = dev_get_drvdata(dev);
 	struct st_lsm6dsx_sensor *sensor;
-	const struct st_lsm6dsx_reg *reg;
-	unsigned int data;
 	int i, err = 0;
 
 	for (i = 0; i < ST_LSM6DSX_ID_MAX; i++) {
@@ -1035,12 +1033,16 @@ static int __maybe_unused st_lsm6dsx_suspend(struct device *dev)
 		if (!(hw->enable_mask & BIT(sensor->id)))
 			continue;
 
-		reg = &st_lsm6dsx_odr_table[sensor->id].reg;
-		data = ST_LSM6DSX_SHIFT_VAL(0, reg->mask);
-		err = st_lsm6dsx_update_bits_locked(hw, reg->addr, reg->mask,
-						    data);
+		if (sensor->id == ST_LSM6DSX_ID_EXT0 ||
+		    sensor->id == ST_LSM6DSX_ID_EXT1 ||
+		    sensor->id == ST_LSM6DSX_ID_EXT2)
+			err = st_lsm6dsx_shub_set_enable(sensor, false);
+		else
+			err = st_lsm6dsx_sensor_set_enable(sensor, false);
 		if (err < 0)
 			return err;
+
+		hw->suspend_mask |= BIT(sensor->id);
 	}
 
 	if (hw->fifo_mode != ST_LSM6DSX_FIFO_BYPASS)
@@ -1060,12 +1062,19 @@ static int __maybe_unused st_lsm6dsx_resume(struct device *dev)
 			continue;
 
 		sensor = iio_priv(hw->iio_devs[i]);
-		if (!(hw->enable_mask & BIT(sensor->id)))
+		if (!(hw->suspend_mask & BIT(sensor->id)))
 			continue;
 
-		err = st_lsm6dsx_set_odr(sensor, sensor->odr);
+		if (sensor->id == ST_LSM6DSX_ID_EXT0 ||
+		    sensor->id == ST_LSM6DSX_ID_EXT1 ||
+		    sensor->id == ST_LSM6DSX_ID_EXT2)
+			err = st_lsm6dsx_shub_set_enable(sensor, true);
+		else
+			err = st_lsm6dsx_sensor_set_enable(sensor, true);
 		if (err < 0)
 			return err;
+
+		hw->suspend_mask &= ~BIT(sensor->id);
 	}
 
 	if (hw->enable_mask)
-- 
2.20.1

[PATCH AUTOSEL 5.1 18/95] iio: temperature: mlx90632 Relax the compatibility check

[Sasha Levin]

From: Crt Mori <cmo@melexis.com>

[ Upstream commit 389fc70b60f534d679aea9a3f05146040ce20d77 ]

Register EE_VERSION contains mixture of calibration information and DSP
version. So far, because calibrations were definite, the driver
compatibility depended on whole contents, but in the newer production
process the calibration part changes. Because of that, value in EE_VERSION
will be changed and to avoid that calibration value is same as DSP version
the MSB in calibration part was fixed to 1.
That means existing calibrations (medical and consumer) will now have
hex values (bits 8 to 15) of 83 and 84 respectively. Driver compatibility
should be based only on DSP version part of the EE_VERSION (bits 0 to 7)
register.

Signed-off-by: Crt Mori <cmo@melexis.com>
Cc: <Stable@vger.kernel.org>
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
 drivers/iio/temperature/mlx90632.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/drivers/iio/temperature/mlx90632.c b/drivers/iio/temperature/mlx90632.c
index be03be719efe..eaca6ba06864 100644
--- a/drivers/iio/temperature/mlx90632.c
+++ b/drivers/iio/temperature/mlx90632.c
@@ -81,6 +81,8 @@
 /* Magic constants */
 #define MLX90632_ID_MEDICAL	0x0105 /* EEPROM DSPv5 Medical device id */
 #define MLX90632_ID_CONSUMER	0x0205 /* EEPROM DSPv5 Consumer device id */
+#define MLX90632_DSP_VERSION	5 /* DSP version */
+#define MLX90632_DSP_MASK	GENMASK(7, 0) /* DSP version in EE_VERSION */
 #define MLX90632_RESET_CMD	0x0006 /* Reset sensor (address or global) */
 #define MLX90632_REF_12		12LL /**< ResCtrlRef value of Ch 1 or Ch 2 */
 #define MLX90632_REF_3		12LL /**< ResCtrlRef value of Channel 3 */
@@ -667,10 +669,13 @@ static int mlx90632_probe(struct i2c_client *client,
 	} else if (read == MLX90632_ID_CONSUMER) {
 		dev_dbg(&client->dev,
 			"Detected Consumer EEPROM calibration %x\n", read);
+	} else if ((read & MLX90632_DSP_MASK) == MLX90632_DSP_VERSION) {
+		dev_dbg(&client->dev,
+			"Detected Unknown EEPROM calibration %x\n", read);	
 	} else {
 		dev_err(&client->dev,
-			"EEPROM version mismatch %x (expected %x or %x)\n",
-			read, MLX90632_ID_CONSUMER, MLX90632_ID_MEDICAL);
+			"Wrong DSP version %x (expected %x)\n",
+			read, MLX90632_DSP_VERSION);
 		return -EPROTONOSUPPORT;
 	}
 
-- 
2.20.1