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| author | Teodora Baluta <teodora.baluta@intel.com> | 2015-06-29 15:44:50 +0300 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2015-07-05 13:54:15 +0100 |
| commit | 2616dfa1d3061b02c3cbce60bc1a59281eccae31 (patch) | |
| tree | ceb3a6f7eddfb15779f5c419d787360ef6bab3a1 /drivers | |
| parent | 5d6e834ac440ce6736b08880503c107d9dc3f320 (diff) | |
| download | linux-2616dfa1d3061b02c3cbce60bc1a59281eccae31.tar.gz linux-2616dfa1d3061b02c3cbce60bc1a59281eccae31.tar.bz2 linux-2616dfa1d3061b02c3cbce60bc1a59281eccae31.zip | |
iio: magnetometer: mmc35240: fix available sampling frequencies
Fix the sampling frequencies according to the datasheet (page 8). The
datasheet specifies the following available frequencies for continuous
mode: 1.5 Hz, 13 Hz, 25 Hz, and 50 Hz.
Also fix comments about the ODR to comply with datasheet.
Signed-off-by: Teodora Baluta <teodora.baluta@intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/iio/magnetometer/mmc35240.c | 35 |
1 files changed, 21 insertions, 14 deletions
diff --git a/drivers/iio/magnetometer/mmc35240.c b/drivers/iio/magnetometer/mmc35240.c index 7a2ea71c659a..d927397a6ef7 100644 --- a/drivers/iio/magnetometer/mmc35240.c +++ b/drivers/iio/magnetometer/mmc35240.c @@ -84,10 +84,10 @@ #define MMC35240_OTP_START_ADDR 0x1B enum mmc35240_resolution { - MMC35240_16_BITS_SLOW = 0, /* 100 Hz */ - MMC35240_16_BITS_FAST, /* 200 Hz */ - MMC35240_14_BITS, /* 333 Hz */ - MMC35240_12_BITS, /* 666 Hz */ + MMC35240_16_BITS_SLOW = 0, /* 7.92 ms */ + MMC35240_16_BITS_FAST, /* 4.08 ms */ + MMC35240_14_BITS, /* 2.16 ms */ + MMC35240_12_BITS, /* 1.20 ms */ }; enum mmc35240_axis { @@ -100,22 +100,22 @@ static const struct { int sens[3]; /* sensitivity per X, Y, Z axis */ int nfo; /* null field output */ } mmc35240_props_table[] = { - /* 16 bits, 100Hz ODR */ + /* 16 bits, 125Hz ODR */ { {1024, 1024, 1024}, 32768, }, - /* 16 bits, 200Hz ODR */ + /* 16 bits, 250Hz ODR */ { {1024, 1024, 770}, 32768, }, - /* 14 bits, 333Hz ODR */ + /* 14 bits, 450Hz ODR */ { {256, 256, 193}, 8192, }, - /* 12 bits, 666Hz ODR */ + /* 12 bits, 800Hz ODR */ { {64, 64, 48}, 2048, @@ -133,9 +133,15 @@ struct mmc35240_data { int axis_scale[3]; }; -static const int mmc35240_samp_freq[] = {100, 200, 333, 666}; +static const struct { + int val; + int val2; +} mmc35240_samp_freq[] = { {1, 500000}, + {13, 0}, + {25, 0}, + {50, 0} }; -static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("100 200 333 666"); +static IIO_CONST_ATTR_SAMP_FREQ_AVAIL("1.5 13 25 50"); #define MMC35240_CHANNEL(_axis) { \ .type = IIO_MAGN, \ @@ -168,7 +174,8 @@ static int mmc35240_get_samp_freq_index(struct mmc35240_data *data, int i; for (i = 0; i < ARRAY_SIZE(mmc35240_samp_freq); i++) - if (mmc35240_samp_freq[i] == val) + if (mmc35240_samp_freq[i].val == val && + mmc35240_samp_freq[i].val2 == val2) return i; return -EINVAL; } @@ -378,9 +385,9 @@ static int mmc35240_read_raw(struct iio_dev *indio_dev, if (i < 0 || i >= ARRAY_SIZE(mmc35240_samp_freq)) return -EINVAL; - *val = mmc35240_samp_freq[i]; - *val2 = 0; - return IIO_VAL_INT; + *val = mmc35240_samp_freq[i].val; + *val2 = mmc35240_samp_freq[i].val2; + return IIO_VAL_INT_PLUS_MICRO; default: return -EINVAL; } |