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Date: Wed, 8 Apr 2015 17:37:30 +0300
From: Irina Tirdea <irina.tirdea@...el.com>
To: Jonathan Cameron <jic23@...nel.org>, linux-iio@...r.kernel.org,
Hartmut Knaack <knaack.h@....de>
Cc: linux-kernel@...r.kernel.org, Irina Tirdea <irina.tirdea@...el.com>
Subject: [PATCH 1/8] iio: accel: mma9553: coding style fixes
Fix a couple of coding style issues including:
* issues reported by checkpatch.pl --strict
* add mma9553_ prefix to all local functions/declarations
* fix documentation
* use GENMASK instead of direct masks
* fix code alignment
Signed-off-by: Irina Tirdea <irina.tirdea@...el.com>
Suggested-by: Hartmut Knaack <knaack.h@....de>
---
drivers/iio/accel/mma9551_core.c | 8 ++--
drivers/iio/accel/mma9551_core.h | 2 +-
drivers/iio/accel/mma9553.c | 98 ++++++++++++++++++++--------------------
3 files changed, 55 insertions(+), 53 deletions(-)
diff --git a/drivers/iio/accel/mma9551_core.c b/drivers/iio/accel/mma9551_core.c
index 7f55a6d..54b3ae6 100644
--- a/drivers/iio/accel/mma9551_core.c
+++ b/drivers/iio/accel/mma9551_core.c
@@ -374,7 +374,7 @@ EXPORT_SYMBOL(mma9551_read_status_word);
* @app_id: Application ID
* @reg: Application register
* @len: Length of array to read in bytes
- * @val: Array of words to read
+ * @buf: Array of words to read
*
* Read multiple configuration registers (word-sized registers).
*
@@ -409,7 +409,7 @@ EXPORT_SYMBOL(mma9551_read_config_words);
* @app_id: Application ID
* @reg: Application register
* @len: Length of array to read in bytes
- * @val: Array of words to read
+ * @buf: Array of words to read
*
* Read multiple status registers (word-sized registers).
*
@@ -444,7 +444,7 @@ EXPORT_SYMBOL(mma9551_read_status_words);
* @app_id: Application ID
* @reg: Application register
* @len: Length of array to write in bytes
- * @val: Array of words to write
+ * @buf: Array of words to write
*
* Write multiple configuration registers (word-sized registers).
*
@@ -785,7 +785,7 @@ EXPORT_SYMBOL(mma9551_read_accel_scale);
*/
int mma9551_app_reset(struct i2c_client *client, u32 app_mask)
{
- return mma9551_write_config_byte(client, MMA9551_APPID_RCS,
+ return mma9551_write_config_byte(client, MMA9551_APPID_RSC,
MMA9551_RSC_RESET +
MMA9551_RSC_OFFSET(app_mask),
MMA9551_RSC_VAL(app_mask));
diff --git a/drivers/iio/accel/mma9551_core.h b/drivers/iio/accel/mma9551_core.h
index edaa56b..79939e4 100644
--- a/drivers/iio/accel/mma9551_core.h
+++ b/drivers/iio/accel/mma9551_core.h
@@ -22,7 +22,7 @@
#define MMA9551_APPID_TILT 0x0B
#define MMA9551_APPID_SLEEP_WAKE 0x12
#define MMA9551_APPID_PEDOMETER 0x15
-#define MMA9551_APPID_RCS 0x17
+#define MMA9551_APPID_RSC 0x17
#define MMA9551_APPID_NONE 0xff
/* Reset/Suspend/Clear application app masks */
diff --git a/drivers/iio/accel/mma9553.c b/drivers/iio/accel/mma9553.c
index 2df1af7..d095f81 100644
--- a/drivers/iio/accel/mma9553.c
+++ b/drivers/iio/accel/mma9553.c
@@ -54,6 +54,7 @@
#define MMA9553_MASK_CONF_STEPCOALESCE GENMASK(7, 0)
#define MMA9553_REG_CONF_ACTTHD 0x0E
+#define MMA9553_MAX_ACTTHD GENMASK(15, 0)
/* Pedometer status registers (R-only) */
#define MMA9553_REG_STATUS 0x00
@@ -62,8 +63,8 @@
#define MMA9553_MASK_STATUS_STEPCHG BIT(13)
#define MMA9553_MASK_STATUS_ACTCHG BIT(12)
#define MMA9553_MASK_STATUS_SUSP BIT(11)
-#define MMA9553_MASK_STATUS_ACTIVITY (BIT(10) | BIT(9) | BIT(8))
-#define MMA9553_MASK_STATUS_VERSION 0x00FF
+#define MMA9553_MASK_STATUS_ACTIVITY GENMASK(10, 8)
+#define MMA9553_MASK_STATUS_VERSION GENMASK(7, 0)
#define MMA9553_REG_STEPCNT 0x02
#define MMA9553_REG_DISTANCE 0x04
@@ -75,14 +76,14 @@
#define MMA9553_DEFAULT_GPIO_PIN mma9551_gpio6
#define MMA9553_DEFAULT_GPIO_POLARITY 0
-/* Bitnum used for gpio configuration = bit number in high status byte */
-#define STATUS_TO_BITNUM(bit) (ffs(bit) - 9)
+/* Bitnum used for GPIO configuration = bit number in high status byte */
+#define MMA9553_STATUS_TO_BITNUM(bit) (ffs(bit) - 9)
#define MMA9553_DEFAULT_SAMPLE_RATE 30 /* Hz */
/*
* The internal activity level must be stable for ACTTHD samples before
- * ACTIVITY is updated.The ACTIVITY variable contains the current activity
+ * ACTIVITY is updated. The ACTIVITY variable contains the current activity
* level and is updated every time a step is detected or once a second
* if there are no steps.
*/
@@ -343,21 +344,21 @@ static int mma9553_conf_gpio(struct mma9553_data *data)
struct mma9553_event *ev_step_detect;
bool activity_enabled;
- activity_enabled =
- mma9553_is_any_event_enabled(data, true, IIO_ACTIVITY);
- ev_step_detect =
- mma9553_get_event(data, IIO_STEPS, IIO_NO_MOD, IIO_EV_DIR_NONE);
+ activity_enabled = mma9553_is_any_event_enabled(data, true,
+ IIO_ACTIVITY);
+ ev_step_detect = mma9553_get_event(data, IIO_STEPS, IIO_NO_MOD,
+ IIO_EV_DIR_NONE);
/*
* If both step detector and activity are enabled, use the MRGFL bit.
* This bit is the logical OR of the SUSPCHG, STEPCHG, and ACTCHG flags.
*/
if (activity_enabled && ev_step_detect->enabled)
- bitnum = STATUS_TO_BITNUM(MMA9553_MASK_STATUS_MRGFL);
+ bitnum = MMA9553_STATUS_TO_BITNUM(MMA9553_MASK_STATUS_MRGFL);
else if (ev_step_detect->enabled)
- bitnum = STATUS_TO_BITNUM(MMA9553_MASK_STATUS_STEPCHG);
+ bitnum = MMA9553_STATUS_TO_BITNUM(MMA9553_MASK_STATUS_STEPCHG);
else if (activity_enabled)
- bitnum = STATUS_TO_BITNUM(MMA9553_MASK_STATUS_ACTCHG);
+ bitnum = MMA9553_STATUS_TO_BITNUM(MMA9553_MASK_STATUS_ACTCHG);
else /* Reset */
appid = MMA9551_APPID_NONE;
@@ -365,13 +366,15 @@ static int mma9553_conf_gpio(struct mma9553_data *data)
return 0;
/* Save initial values for activity and stepcnt */
- if (activity_enabled || ev_step_detect->enabled)
- mma9553_read_activity_stepcnt(data, &data->activity,
- &data->stepcnt);
+ if (activity_enabled || ev_step_detect->enabled) {
+ ret = mma9553_read_activity_stepcnt(data, &data->activity,
+ &data->stepcnt);
+ if (ret < 0)
+ return ret;
+ }
- ret = mma9551_gpio_config(data->client,
- MMA9553_DEFAULT_GPIO_PIN,
- appid, bitnum, MMA9553_DEFAULT_GPIO_POLARITY);
+ ret = mma9551_gpio_config(data->client, MMA9553_DEFAULT_GPIO_PIN, appid,
+ bitnum, MMA9553_DEFAULT_GPIO_POLARITY);
if (ret < 0)
return ret;
data->gpio_bitnum = bitnum;
@@ -392,19 +395,19 @@ static int mma9553_init(struct mma9553_data *data)
* a device identification command to differentiate the MMA9553L
* from the MMA9550L.
*/
- ret =
- mma9551_read_config_words(data->client, MMA9551_APPID_PEDOMETER,
- MMA9553_REG_CONF_SLEEPMIN,
- sizeof(data->conf), (u16 *) &data->conf);
+ ret = mma9551_read_config_words(data->client, MMA9551_APPID_PEDOMETER,
+ MMA9553_REG_CONF_SLEEPMIN,
+ sizeof(data->conf),
+ (u16 *)&data->conf);
if (ret < 0) {
dev_err(&data->client->dev,
- "device is not MMA9553L: failed to read cfg regs\n");
+ "failed to read configuration registers\n");
return ret;
}
- /* Reset gpio */
data->gpio_bitnum = -1;
+ /* Reset GPIO */
ret = mma9553_conf_gpio(data);
if (ret < 0)
return ret;
@@ -417,18 +420,18 @@ static int mma9553_init(struct mma9553_data *data)
data->conf.sleepmin = MMA9553_DEFAULT_SLEEPMIN;
data->conf.sleepmax = MMA9553_DEFAULT_SLEEPMAX;
data->conf.sleepthd = MMA9553_DEFAULT_SLEEPTHD;
- data->conf.config =
- mma9553_set_bits(data->conf.config, 1, MMA9553_MASK_CONF_CONFIG);
+ data->conf.config = mma9553_set_bits(data->conf.config, 1,
+ MMA9553_MASK_CONF_CONFIG);
/*
* Clear the activity debounce counter when the activity level changes,
* so that the confidence level applies for any activity level.
*/
data->conf.config = mma9553_set_bits(data->conf.config, 1,
MMA9553_MASK_CONF_ACT_DBCNTM);
- ret =
- mma9551_write_config_words(data->client, MMA9551_APPID_PEDOMETER,
- MMA9553_REG_CONF_SLEEPMIN,
- sizeof(data->conf), (u16 *) &data->conf);
+ ret = mma9551_write_config_words(data->client, MMA9551_APPID_PEDOMETER,
+ MMA9553_REG_CONF_SLEEPMIN,
+ sizeof(data->conf),
+ (u16 *)&data->conf);
if (ret < 0) {
dev_err(&data->client->dev,
"failed to write configuration registers\n");
@@ -791,7 +794,7 @@ static int mma9553_write_event_config(struct iio_dev *indio_dev,
mutex_unlock(&data->mutex);
- return ret;
+ return 0;
err_conf_gpio:
if (state) {
@@ -896,7 +899,7 @@ static int mma9553_get_calibgender_mode(struct iio_dev *indio_dev,
gender = mma9553_get_bits(data->conf.filter, MMA9553_MASK_CONF_MALE);
/*
* HW expects 0 for female and 1 for male,
- * while iio index is 0 for male and 1 for female
+ * while iio index is 0 for male and 1 for female.
*/
return !gender;
}
@@ -943,11 +946,11 @@ static const struct iio_event_spec mma9553_activity_events[] = {
},
};
-static const char * const calibgender_modes[] = { "male", "female" };
+static const char * const mma9553_calibgender_modes[] = { "male", "female" };
static const struct iio_enum mma9553_calibgender_enum = {
- .items = calibgender_modes,
- .num_items = ARRAY_SIZE(calibgender_modes),
+ .items = mma9553_calibgender_modes,
+ .num_items = ARRAY_SIZE(mma9553_calibgender_modes),
.get = mma9553_get_calibgender_mode,
.set = mma9553_set_calibgender_mode,
};
@@ -1054,16 +1057,15 @@ static irqreturn_t mma9553_event_handler(int irq, void *private)
return IRQ_HANDLED;
}
- ev_prev_activity =
- mma9553_get_event(data, IIO_ACTIVITY,
- mma9553_activity_to_mod(data->activity),
- IIO_EV_DIR_FALLING);
- ev_activity =
- mma9553_get_event(data, IIO_ACTIVITY,
- mma9553_activity_to_mod(activity),
- IIO_EV_DIR_RISING);
- ev_step_detect =
- mma9553_get_event(data, IIO_STEPS, IIO_NO_MOD, IIO_EV_DIR_NONE);
+ ev_prev_activity = mma9553_get_event(data, IIO_ACTIVITY,
+ mma9553_activity_to_mod(
+ data->activity),
+ IIO_EV_DIR_FALLING);
+ ev_activity = mma9553_get_event(data, IIO_ACTIVITY,
+ mma9553_activity_to_mod(activity),
+ IIO_EV_DIR_RISING);
+ ev_step_detect = mma9553_get_event(data, IIO_STEPS, IIO_NO_MOD,
+ IIO_EV_DIR_NONE);
if (ev_step_detect->enabled && (stepcnt != data->stepcnt)) {
data->stepcnt = stepcnt;
@@ -1108,16 +1110,16 @@ static int mma9553_gpio_probe(struct i2c_client *client)
dev = &client->dev;
- /* data ready gpio interrupt pin */
+ /* data ready GPIO interrupt pin */
gpio = devm_gpiod_get_index(dev, MMA9553_GPIO_NAME, 0, GPIOD_IN);
if (IS_ERR(gpio)) {
- dev_err(dev, "acpi gpio get index failed\n");
+ dev_err(dev, "ACPI GPIO get index failed\n");
return PTR_ERR(gpio);
}
ret = gpiod_to_irq(gpio);
- dev_dbg(dev, "gpio resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
+ dev_dbg(dev, "GPIO resource, no:%d irq:%d\n", desc_to_gpio(gpio), ret);
return ret;
}
--
1.9.1
--
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