diff options
| author | Daniel Baluta <daniel.baluta@intel.com> | 2015-01-05 10:21:42 +0100 |
|---|---|---|
| committer | Jonathan Cameron <jic23@kernel.org> | 2015-02-03 22:03:20 +0100 |
| commit | a36385a2613c0755164ec53e8b7a42d4d11f65b9 (patch) | |
| tree | 8f1df9886acfd94f0176bd8413f9770bc6a2865c /drivers/iio/imu | |
| parent | iio: meter: ade7759: add error handling in _reset and _stop_device (diff) | |
| download | linux-a36385a2613c0755164ec53e8b7a42d4d11f65b9.tar.xz linux-a36385a2613c0755164ec53e8b7a42d4d11f65b9.zip | |
iio: imu: kmx61: Drop odr_bits from kmx61_samp_freq_table
odr_bits values are between 0 and 11, so we can use the index
in kmx61_samp_freq_table instead of odr_bits structure member.
Signed-off-by: Daniel Baluta <daniel.baluta@intel.com>
Reviewed-by: Hartmut Knaack <knaack.h@gmx.de>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'drivers/iio/imu')
| -rw-r--r-- | drivers/iio/imu/kmx61.c | 64 |
1 files changed, 26 insertions, 38 deletions
diff --git a/drivers/iio/imu/kmx61.c b/drivers/iio/imu/kmx61.c index 5cc3692acf37..32e5f96a6477 100644 --- a/drivers/iio/imu/kmx61.c +++ b/drivers/iio/imu/kmx61.c @@ -169,19 +169,18 @@ static const u16 kmx61_uscale_table[] = {9582, 19163, 38326}; static const struct { int val; int val2; - u8 odr_bits; -} kmx61_samp_freq_table[] = { {12, 500000, 0x00}, - {25, 0, 0x01}, - {50, 0, 0x02}, - {100, 0, 0x03}, - {200, 0, 0x04}, - {400, 0, 0x05}, - {800, 0, 0x06}, - {1600, 0, 0x07}, - {0, 781000, 0x08}, - {1, 563000, 0x09}, - {3, 125000, 0x0A}, - {6, 250000, 0x0B} }; +} kmx61_samp_freq_table[] = { {12, 500000}, + {25, 0}, + {50, 0}, + {100, 0}, + {200, 0}, + {400, 0}, + {800, 0}, + {1600, 0}, + {0, 781000}, + {1, 563000}, + {3, 125000}, + {6, 250000} }; static const struct { int val; @@ -302,24 +301,10 @@ static int kmx61_convert_freq_to_bit(int val, int val2) for (i = 0; i < ARRAY_SIZE(kmx61_samp_freq_table); i++) if (val == kmx61_samp_freq_table[i].val && val2 == kmx61_samp_freq_table[i].val2) - return kmx61_samp_freq_table[i].odr_bits; - return -EINVAL; -} - -static int kmx61_convert_bit_to_freq(u8 odr_bits, int *val, int *val2) -{ - int i; - - for (i = 0; i < ARRAY_SIZE(kmx61_samp_freq_table); i++) - if (odr_bits == kmx61_samp_freq_table[i].odr_bits) { - *val = kmx61_samp_freq_table[i].val; - *val2 = kmx61_samp_freq_table[i].val2; - return 0; - } + return i; return -EINVAL; } - static int kmx61_convert_wake_up_odr_to_bit(int val, int val2) { int i; @@ -478,7 +463,7 @@ static int kmx61_set_odr(struct kmx61_data *data, int val, int val2, u8 device) static int kmx61_get_odr(struct kmx61_data *data, int *val, int *val2, u8 device) -{ int i; +{ u8 lodr_bits; if (device & KMX61_ACC) @@ -490,13 +475,13 @@ static int kmx61_get_odr(struct kmx61_data *data, int *val, int *val2, else return -EINVAL; - for (i = 0; i < ARRAY_SIZE(kmx61_samp_freq_table); i++) - if (lodr_bits == kmx61_samp_freq_table[i].odr_bits) { - *val = kmx61_samp_freq_table[i].val; - *val2 = kmx61_samp_freq_table[i].val2; - return 0; - } - return -EINVAL; + if (lodr_bits >= ARRAY_SIZE(kmx61_samp_freq_table)) + return -EINVAL; + + *val = kmx61_samp_freq_table[lodr_bits].val; + *val2 = kmx61_samp_freq_table[lodr_bits].val2; + + return 0; } static int kmx61_set_range(struct kmx61_data *data, u8 range) @@ -580,8 +565,11 @@ static int kmx61_chip_init(struct kmx61_data *data) } data->odr_bits = ret; - /* set output data rate for wake up (motion detection) function */ - ret = kmx61_convert_bit_to_freq(data->odr_bits, &val, &val2); + /* + * set output data rate for wake up (motion detection) function + * to match data rate for accelerometer sampling + */ + ret = kmx61_get_odr(data, &val, &val2, KMX61_ACC); if (ret < 0) return ret; |