diff options
Diffstat (limited to 'drivers/counter/104-quad-8.c')
| -rw-r--r-- | drivers/counter/104-quad-8.c | 653 |
1 files changed, 64 insertions, 589 deletions
diff --git a/drivers/counter/104-quad-8.c b/drivers/counter/104-quad-8.c index 78766b6ec271..9691f8612be8 100644 --- a/drivers/counter/104-quad-8.c +++ b/drivers/counter/104-quad-8.c @@ -9,8 +9,6 @@ #include <linux/counter.h> #include <linux/device.h> #include <linux/errno.h> -#include <linux/iio/iio.h> -#include <linux/iio/types.h> #include <linux/io.h> #include <linux/ioport.h> #include <linux/isa.h> @@ -29,7 +27,7 @@ MODULE_PARM_DESC(base, "ACCES 104-QUAD-8 base addresses"); #define QUAD8_NUM_COUNTERS 8 /** - * struct quad8_iio - IIO device private data structure + * struct quad8 - device private data structure * @counter: instance of the counter_device * @fck_prescaler: array of filter clock prescaler configurations * @preset: array of preset values @@ -41,9 +39,9 @@ MODULE_PARM_DESC(base, "ACCES 104-QUAD-8 base addresses"); * @synchronous_mode: array of index function synchronous mode configurations * @index_polarity: array of index function polarity configurations * @cable_fault_enable: differential encoder cable status enable configurations - * @base: base port address of the IIO device + * @base: base port address of the device */ -struct quad8_iio { +struct quad8 { struct mutex lock; struct counter_device counter; unsigned int fck_prescaler[QUAD8_NUM_COUNTERS]; @@ -98,532 +96,10 @@ struct quad8_iio { #define QUAD8_CMR_QUADRATURE_X2 0x10 #define QUAD8_CMR_QUADRATURE_X4 0x18 - -static int quad8_read_raw(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, int *val, int *val2, long mask) -{ - struct quad8_iio *const priv = iio_priv(indio_dev); - const int base_offset = priv->base + 2 * chan->channel; - unsigned int flags; - unsigned int borrow; - unsigned int carry; - int i; - - switch (mask) { - case IIO_CHAN_INFO_RAW: - if (chan->type == IIO_INDEX) { - *val = !!(inb(priv->base + QUAD8_REG_INDEX_INPUT_LEVELS) - & BIT(chan->channel)); - return IIO_VAL_INT; - } - - flags = inb(base_offset + 1); - borrow = flags & QUAD8_FLAG_BT; - carry = !!(flags & QUAD8_FLAG_CT); - - /* Borrow XOR Carry effectively doubles count range */ - *val = (borrow ^ carry) << 24; - - mutex_lock(&priv->lock); - - /* Reset Byte Pointer; transfer Counter to Output Latch */ - outb(QUAD8_CTR_RLD | QUAD8_RLD_RESET_BP | QUAD8_RLD_CNTR_OUT, - base_offset + 1); - - for (i = 0; i < 3; i++) - *val |= (unsigned int)inb(base_offset) << (8 * i); - - mutex_unlock(&priv->lock); - - return IIO_VAL_INT; - case IIO_CHAN_INFO_ENABLE: - *val = priv->ab_enable[chan->channel]; - return IIO_VAL_INT; - case IIO_CHAN_INFO_SCALE: - *val = 1; - *val2 = priv->quadrature_scale[chan->channel]; - return IIO_VAL_FRACTIONAL_LOG2; - } - - return -EINVAL; -} - -static int quad8_write_raw(struct iio_dev *indio_dev, - struct iio_chan_spec const *chan, int val, int val2, long mask) -{ - struct quad8_iio *const priv = iio_priv(indio_dev); - const int base_offset = priv->base + 2 * chan->channel; - int i; - unsigned int ior_cfg; - - switch (mask) { - case IIO_CHAN_INFO_RAW: - if (chan->type == IIO_INDEX) - return -EINVAL; - - /* Only 24-bit values are supported */ - if ((unsigned int)val > 0xFFFFFF) - return -EINVAL; - - mutex_lock(&priv->lock); - - /* Reset Byte Pointer */ - outb(QUAD8_CTR_RLD | QUAD8_RLD_RESET_BP, base_offset + 1); - - /* Counter can only be set via Preset Register */ - for (i = 0; i < 3; i++) - outb(val >> (8 * i), base_offset); - - /* Transfer Preset Register to Counter */ - outb(QUAD8_CTR_RLD | QUAD8_RLD_PRESET_CNTR, base_offset + 1); - - /* Reset Byte Pointer */ - outb(QUAD8_CTR_RLD | QUAD8_RLD_RESET_BP, base_offset + 1); - - /* Set Preset Register back to original value */ - val = priv->preset[chan->channel]; - for (i = 0; i < 3; i++) - outb(val >> (8 * i), base_offset); - - /* Reset Borrow, Carry, Compare, and Sign flags */ - outb(QUAD8_CTR_RLD | QUAD8_RLD_RESET_FLAGS, base_offset + 1); - /* Reset Error flag */ - outb(QUAD8_CTR_RLD | QUAD8_RLD_RESET_E, base_offset + 1); - - mutex_unlock(&priv->lock); - - return 0; - case IIO_CHAN_INFO_ENABLE: - /* only boolean values accepted */ - if (val < 0 || val > 1) - return -EINVAL; - - mutex_lock(&priv->lock); - - priv->ab_enable[chan->channel] = val; - - ior_cfg = val | priv->preset_enable[chan->channel] << 1; - - /* Load I/O control configuration */ - outb(QUAD8_CTR_IOR | ior_cfg, base_offset + 1); - - mutex_unlock(&priv->lock); - - return 0; - case IIO_CHAN_INFO_SCALE: - mutex_lock(&priv->lock); - - /* Quadrature scaling only available in quadrature mode */ - if (!priv->quadrature_mode[chan->channel] && - (val2 || val != 1)) { - mutex_unlock(&priv->lock); - return -EINVAL; - } - - /* Only three gain states (1, 0.5, 0.25) */ - if (val == 1 && !val2) - priv->quadrature_scale[chan->channel] = 0; - else if (!val) - switch (val2) { - case 500000: - priv->quadrature_scale[chan->channel] = 1; - break; - case 250000: - priv->quadrature_scale[chan->channel] = 2; - break; - default: - mutex_unlock(&priv->lock); - return -EINVAL; - } - else { - mutex_unlock(&priv->lock); - return -EINVAL; - } - - mutex_unlock(&priv->lock); - return 0; - } - - return -EINVAL; -} - -static const struct iio_info quad8_info = { - .read_raw = quad8_read_raw, - .write_raw = quad8_write_raw -}; - -static ssize_t quad8_read_preset(struct iio_dev *indio_dev, uintptr_t private, - const struct iio_chan_spec *chan, char *buf) -{ - const struct quad8_iio *const priv = iio_priv(indio_dev); - - return snprintf(buf, PAGE_SIZE, "%u\n", priv->preset[chan->channel]); -} - -static ssize_t quad8_write_preset(struct iio_dev *indio_dev, uintptr_t private, - const struct iio_chan_spec *chan, const char *buf, size_t len) -{ - struct quad8_iio *const priv = iio_priv(indio_dev); - const int base_offset = priv->base + 2 * chan->channel; - unsigned int preset; - int ret; - int i; - - ret = kstrtouint(buf, 0, &preset); - if (ret) - return ret; - - /* Only 24-bit values are supported */ - if (preset > 0xFFFFFF) - return -EINVAL; - - mutex_lock(&priv->lock); - - priv->preset[chan->channel] = preset; - - /* Reset Byte Pointer */ - outb(QUAD8_CTR_RLD | QUAD8_RLD_RESET_BP, base_offset + 1); - - /* Set Preset Register */ - for (i = 0; i < 3; i++) - outb(preset >> (8 * i), base_offset); - - mutex_unlock(&priv->lock); - - return len; -} - -static ssize_t quad8_read_set_to_preset_on_index(struct iio_dev *indio_dev, - uintptr_t private, const struct iio_chan_spec *chan, char *buf) -{ - const struct quad8_iio *const priv = iio_priv(indio_dev); - - return snprintf(buf, PAGE_SIZE, "%u\n", - !priv->preset_enable[chan->channel]); -} - -static ssize_t quad8_write_set_to_preset_on_index(struct iio_dev *indio_dev, - uintptr_t private, const struct iio_chan_spec *chan, const char *buf, - size_t len) -{ - struct quad8_iio *const priv = iio_priv(indio_dev); - const int base_offset = priv->base + 2 * chan->channel + 1; - bool preset_enable; - int ret; - unsigned int ior_cfg; - - ret = kstrtobool(buf, &preset_enable); - if (ret) - return ret; - - /* Preset enable is active low in Input/Output Control register */ - preset_enable = !preset_enable; - - mutex_lock(&priv->lock); - - priv->preset_enable[chan->channel] = preset_enable; - - ior_cfg = priv->ab_enable[chan->channel] | - (unsigned int)preset_enable << 1; - - /* Load I/O control configuration to Input / Output Control Register */ - outb(QUAD8_CTR_IOR | ior_cfg, base_offset); - - mutex_unlock(&priv->lock); - - return len; -} - -static const char *const quad8_noise_error_states[] = { - "No excessive noise is present at the count inputs", - "Excessive noise is present at the count inputs" -}; - -static int quad8_get_noise_error(struct iio_dev *indio_dev, - const struct iio_chan_spec *chan) -{ - struct quad8_iio *const priv = iio_priv(indio_dev); - const int base_offset = priv->base + 2 * chan->channel + 1; - - return !!(inb(base_offset) & QUAD8_FLAG_E); -} - -static const struct iio_enum quad8_noise_error_enum = { - .items = quad8_noise_error_states, - .num_items = ARRAY_SIZE(quad8_noise_error_states), - .get = quad8_get_noise_error -}; - -static const char *const quad8_count_direction_states[] = { - "down", - "up" -}; - -static int quad8_get_count_direction(struct iio_dev *indio_dev, - const struct iio_chan_spec *chan) -{ - struct quad8_iio *const priv = iio_priv(indio_dev); - const int base_offset = priv->base + 2 * chan->channel + 1; - - return !!(inb(base_offset) & QUAD8_FLAG_UD); -} - -static const struct iio_enum quad8_count_direction_enum = { - .items = quad8_count_direction_states, - .num_items = ARRAY_SIZE(quad8_count_direction_states), - .get = quad8_get_count_direction -}; - -static const char *const quad8_count_modes[] = { - "normal", - "range limit", - "non-recycle", - "modulo-n" -}; - -static int quad8_set_count_mode(struct iio_dev *indio_dev, - const struct iio_chan_spec *chan, unsigned int cnt_mode) -{ - struct quad8_iio *const priv = iio_priv(indio_dev); - unsigned int mode_cfg = cnt_mode << 1; - const int base_offset = priv->base + 2 * chan->channel + 1; - - mutex_lock(&priv->lock); - - priv->count_mode[chan->channel] = cnt_mode; - - /* Add quadrature mode configuration */ - if (priv->quadrature_mode[chan->channel]) - mode_cfg |= (priv->quadrature_scale[chan->channel] + 1) << 3; - - /* Load mode configuration to Counter Mode Register */ - outb(QUAD8_CTR_CMR | mode_cfg, base_offset); - - mutex_unlock(&priv->lock); - - return 0; -} - -static int quad8_get_count_mode(struct iio_dev *indio_dev, - const struct iio_chan_spec *chan) -{ - const struct quad8_iio *const priv = iio_priv(indio_dev); - - return priv->count_mode[chan->channel]; -} - -static const struct iio_enum quad8_count_mode_enum = { - .items = quad8_count_modes, - .num_items = ARRAY_SIZE(quad8_count_modes), - .set = quad8_set_count_mode, - .get = quad8_get_count_mode -}; - -static const char *const quad8_synchronous_modes[] = { - "non-synchronous", - "synchronous" -}; - -static int quad8_set_synchronous_mode(struct iio_dev *indio_dev, - const struct iio_chan_spec *chan, unsigned int synchronous_mode) -{ - struct quad8_iio *const priv = iio_priv(indio_dev); - const int base_offset = priv->base + 2 * chan->channel + 1; - unsigned int idr_cfg = synchronous_mode; - - mutex_lock(&priv->lock); - - idr_cfg |= priv->index_polarity[chan->channel] << 1; - - /* Index function must be non-synchronous in non-quadrature mode */ - if (synchronous_mode && !priv->quadrature_mode[chan->channel]) { - mutex_unlock(&priv->lock); - return -EINVAL; - } - - priv->synchronous_mode[chan->channel] = synchronous_mode; - - /* Load Index Control configuration to Index Control Register */ - outb(QUAD8_CTR_IDR | idr_cfg, base_offset); - - mutex_unlock(&priv->lock); - - return 0; -} - -static int quad8_get_synchronous_mode(struct iio_dev *indio_dev, - const struct iio_chan_spec *chan) -{ - const struct quad8_iio *const priv = iio_priv(indio_dev); - - return priv->synchronous_mode[chan->channel]; -} - -static const struct iio_enum quad8_synchronous_mode_enum = { - .items = quad8_synchronous_modes, - .num_items = ARRAY_SIZE(quad8_synchronous_modes), - .set = quad8_set_synchronous_mode, - .get = quad8_get_synchronous_mode -}; - -static const char *const quad8_quadrature_modes[] = { - "non-quadrature", - "quadrature" -}; - -static int quad8_set_quadrature_mode(struct iio_dev *indio_dev, - const struct iio_chan_spec *chan, unsigned int quadrature_mode) -{ - struct quad8_iio *const priv = iio_priv(indio_dev); - const int base_offset = priv->base + 2 * chan->channel + 1; - unsigned int mode_cfg; - - mutex_lock(&priv->lock); - - mode_cfg = priv->count_mode[chan->channel] << 1; - - if (quadrature_mode) - mode_cfg |= (priv->quadrature_scale[chan->channel] + 1) << 3; - else { - /* Quadrature scaling only available in quadrature mode */ - priv->quadrature_scale[chan->channel] = 0; - - /* Synchronous function not supported in non-quadrature mode */ - if (priv->synchronous_mode[chan->channel]) - quad8_set_synchronous_mode(indio_dev, chan, 0); - } - - priv->quadrature_mode[chan->channel] = quadrature_mode; - - /* Load mode configuration to Counter Mode Register */ - outb(QUAD8_CTR_CMR | mode_cfg, base_offset); - - mutex_unlock(&priv->lock); - - return 0; -} - -static int quad8_get_quadrature_mode(struct iio_dev *indio_dev, - const struct iio_chan_spec *chan) -{ - const struct quad8_iio *const priv = iio_priv(indio_dev); - - return priv->quadrature_mode[chan->channel]; -} - -static const struct iio_enum quad8_quadrature_mode_enum = { - .items = quad8_quadrature_modes, - .num_items = ARRAY_SIZE(quad8_quadrature_modes), - .set = quad8_set_quadrature_mode, - .get = quad8_get_quadrature_mode -}; - -static const char *const quad8_index_polarity_modes[] = { - "negative", - "positive" -}; - -static int quad8_set_index_polarity(struct iio_dev *indio_dev, - const struct iio_chan_spec *chan, unsigned int index_polarity) -{ - struct quad8_iio *const priv = iio_priv(indio_dev); - const int base_offset = priv->base + 2 * chan->channel + 1; - unsigned int idr_cfg = index_polarity << 1; - - mutex_lock(&priv->lock); - - idr_cfg |= priv->synchronous_mode[chan->channel]; - - priv->index_polarity[chan->channel] = index_polarity; - - /* Load Index Control configuration to Index Control Register */ - outb(QUAD8_CTR_IDR | idr_cfg, base_offset); - - mutex_unlock(&priv->lock); - - return 0; -} - -static int quad8_get_index_polarity(struct iio_dev *indio_dev, - const struct iio_chan_spec *chan) -{ - const struct quad8_iio *const priv = iio_priv(indio_dev); - - return priv->index_polarity[chan->channel]; -} - -static const struct iio_enum quad8_index_polarity_enum = { - .items = quad8_index_polarity_modes, - .num_items = ARRAY_SIZE(quad8_index_polarity_modes), - .set = quad8_set_index_polarity, - .get = quad8_get_index_polarity -}; - -static const struct iio_chan_spec_ext_info quad8_count_ext_info[] = { - { - .name = "preset", - .shared = IIO_SEPARATE, - .read = quad8_read_preset, - .write = quad8_write_preset - }, - { - .name = "set_to_preset_on_index", - .shared = IIO_SEPARATE, - .read = quad8_read_set_to_preset_on_index, - .write = quad8_write_set_to_preset_on_index - }, - IIO_ENUM("noise_error", IIO_SEPARATE, &quad8_noise_error_enum), - IIO_ENUM_AVAILABLE("noise_error", &quad8_noise_error_enum), - IIO_ENUM("count_direction", IIO_SEPARATE, &quad8_count_direction_enum), - IIO_ENUM_AVAILABLE("count_direction", &quad8_count_direction_enum), - IIO_ENUM("count_mode", IIO_SEPARATE, &quad8_count_mode_enum), - IIO_ENUM_AVAILABLE("count_mode", &quad8_count_mode_enum), - IIO_ENUM("quadrature_mode", IIO_SEPARATE, &quad8_quadrature_mode_enum), - IIO_ENUM_AVAILABLE("quadrature_mode", &quad8_quadrature_mode_enum), - {} -}; - -static const struct iio_chan_spec_ext_info quad8_index_ext_info[] = { - IIO_ENUM("synchronous_mode", IIO_SEPARATE, - &quad8_synchronous_mode_enum), - IIO_ENUM_AVAILABLE("synchronous_mode", &quad8_synchronous_mode_enum), - IIO_ENUM("index_polarity", IIO_SEPARATE, &quad8_index_polarity_enum), - IIO_ENUM_AVAILABLE("index_polarity", &quad8_index_polarity_enum), - {} -}; - -#define QUAD8_COUNT_CHAN(_chan) { \ - .type = IIO_COUNT, \ - .channel = (_chan), \ - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW) | \ - BIT(IIO_CHAN_INFO_ENABLE) | BIT(IIO_CHAN_INFO_SCALE), \ - .ext_info = quad8_count_ext_info, \ - .indexed = 1 \ -} - -#define QUAD8_INDEX_CHAN(_chan) { \ - .type = IIO_INDEX, \ - .channel = (_chan), \ - .info_mask_separate = BIT(IIO_CHAN_INFO_RAW), \ - .ext_info = quad8_index_ext_info, \ - .indexed = 1 \ -} - -static const struct iio_chan_spec quad8_channels[] = { - QUAD8_COUNT_CHAN(0), QUAD8_INDEX_CHAN(0), - QUAD8_COUNT_CHAN(1), QUAD8_INDEX_CHAN(1), - QUAD8_COUNT_CHAN(2), QUAD8_INDEX_CHAN(2), - QUAD8_COUNT_CHAN(3), QUAD8_INDEX_CHAN(3), - QUAD8_COUNT_CHAN(4), QUAD8_INDEX_CHAN(4), - QUAD8_COUNT_CHAN(5), QUAD8_INDEX_CHAN(5), - QUAD8_COUNT_CHAN(6), QUAD8_INDEX_CHAN(6), - QUAD8_COUNT_CHAN(7), QUAD8_INDEX_CHAN(7) -}; - static int quad8_signal_read(struct counter_device *counter, struct counter_signal *signal, enum counter_signal_value *val) { - const struct quad8_iio *const priv = counter->priv; + const struct quad8 *const priv = counter->priv; unsigned int state; /* Only Index signal levels can be read */ @@ -641,7 +117,7 @@ static int quad8_signal_read(struct counter_device *counter, static int quad8_count_read(struct counter_device *counter, struct counter_count *count, unsigned long *val) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; const int base_offset = priv->base + 2 * count->id; unsigned int flags; unsigned int borrow; @@ -672,7 +148,7 @@ static int quad8_count_read(struct counter_device *counter, static int quad8_count_write(struct counter_device *counter, struct counter_count *count, unsigned long val) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; const int base_offset = priv->base + 2 * count->id; int i; @@ -727,7 +203,7 @@ static enum counter_count_function quad8_count_functions_list[] = { static int quad8_function_get(struct counter_device *counter, struct counter_count *count, size_t *function) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; const int id = count->id; mutex_lock(&priv->lock); @@ -755,7 +231,7 @@ static int quad8_function_get(struct counter_device *counter, static int quad8_function_set(struct counter_device *counter, struct counter_count *count, size_t function) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; const int id = count->id; unsigned int *const quadrature_mode = priv->quadrature_mode + id; unsigned int *const scale = priv->quadrature_scale + id; @@ -811,7 +287,7 @@ static int quad8_function_set(struct counter_device *counter, static void quad8_direction_get(struct counter_device *counter, struct counter_count *count, enum counter_count_direction *direction) { - const struct quad8_iio *const priv = counter->priv; + const struct quad8 *const priv = counter->priv; unsigned int ud_flag; const unsigned int flag_addr = priv->base + 2 * count->id + 1; @@ -845,7 +321,7 @@ static int quad8_action_get(struct counter_device *counter, struct counter_count *count, struct counter_synapse *synapse, size_t *action) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; int err; size_t function = 0; const size_t signal_a_id = count->synapses[0].signal->id; @@ -905,10 +381,15 @@ static const struct counter_ops quad8_ops = { .action_get = quad8_action_get }; +static const char *const quad8_index_polarity_modes[] = { + "negative", + "positive" +}; + static int quad8_index_polarity_get(struct counter_device *counter, struct counter_signal *signal, size_t *index_polarity) { - const struct quad8_iio *const priv = counter->priv; + const struct quad8 *const priv = counter->priv; const size_t channel_id = signal->id - 16; *index_polarity = priv->index_polarity[channel_id]; @@ -919,7 +400,7 @@ static int quad8_index_polarity_get(struct counter_device *counter, static int quad8_index_polarity_set(struct counter_device *counter, struct counter_signal *signal, size_t index_polarity) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; const size_t channel_id = signal->id - 16; const int base_offset = priv->base + 2 * channel_id + 1; unsigned int idr_cfg = index_polarity << 1; @@ -945,10 +426,15 @@ static struct counter_signal_enum_ext quad8_index_pol_enum = { .set = quad8_index_polarity_set }; +static const char *const quad8_synchronous_modes[] = { + "non-synchronous", + "synchronous" +}; + static int quad8_synchronous_mode_get(struct counter_device *counter, struct counter_signal *signal, size_t *synchronous_mode) { - const struct quad8_iio *const priv = counter->priv; + const struct quad8 *const priv = counter->priv; const size_t channel_id = signal->id - 16; *synchronous_mode = priv->synchronous_mode[channel_id]; @@ -959,7 +445,7 @@ static int quad8_synchronous_mode_get(struct counter_device *counter, static int quad8_synchronous_mode_set(struct counter_device *counter, struct counter_signal *signal, size_t synchronous_mode) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; const size_t channel_id = signal->id - 16; const int base_offset = priv->base + 2 * channel_id + 1; unsigned int idr_cfg = synchronous_mode; @@ -1001,7 +487,7 @@ static ssize_t quad8_count_floor_read(struct counter_device *counter, static int quad8_count_mode_get(struct counter_device *counter, struct counter_count *count, size_t *cnt_mode) { - const struct quad8_iio *const priv = counter->priv; + const struct quad8 *const priv = counter->priv; /* Map 104-QUAD-8 count mode to Generic Counter count mode */ switch (priv->count_mode[count->id]) { @@ -1025,7 +511,7 @@ static int quad8_count_mode_get(struct counter_device *counter, static int quad8_count_mode_set(struct counter_device *counter, struct counter_count *count, size_t cnt_mode) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; unsigned int mode_cfg; const int base_offset = priv->base + 2 * count->id + 1; @@ -1084,7 +570,7 @@ static ssize_t quad8_count_direction_read(struct counter_device *counter, static ssize_t quad8_count_enable_read(struct counter_device *counter, struct counter_count *count, void *private, char *buf) { - const struct quad8_iio *const priv = counter->priv; + const struct quad8 *const priv = counter->priv; return sprintf(buf, "%u\n", priv->ab_enable[count->id]); } @@ -1092,7 +578,7 @@ static ssize_t quad8_count_enable_read(struct counter_device *counter, static ssize_t quad8_count_enable_write(struct counter_device *counter, struct counter_count *count, void *private, const char *buf, size_t len) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; const int base_offset = priv->base + 2 * count->id; int err; bool ab_enable; @@ -1116,10 +602,15 @@ static ssize_t quad8_count_enable_write(struct counter_device *counter, return len; } +static const char *const quad8_noise_error_states[] = { + "No excessive noise is present at the count inputs", + "Excessive noise is present at the count inputs" +}; + static int quad8_error_noise_get(struct counter_device *counter, struct counter_count *count, size_t *noise_error) { - const struct quad8_iio *const priv = counter->priv; + const struct quad8 *const priv = counter->priv; const int base_offset = priv->base + 2 * count->id + 1; *noise_error = !!(inb(base_offset) & QUAD8_FLAG_E); @@ -1136,18 +627,18 @@ static struct counter_count_enum_ext quad8_error_noise_enum = { static ssize_t quad8_count_preset_read(struct counter_device *counter, struct counter_count *count, void *private, char *buf) { - const struct quad8_iio *const priv = counter->priv; + const struct quad8 *const priv = counter->priv; return sprintf(buf, "%u\n", priv->preset[count->id]); } -static void quad8_preset_register_set(struct quad8_iio *quad8iio, int id, - unsigned int preset) +static void quad8_preset_register_set(struct quad8 *priv, int id, + unsigned int preset) { - const unsigned int base_offset = quad8iio->base + 2 * id; + const unsigned int base_offset = priv->base + 2 * id; int i; - quad8iio->preset[id] = preset; + priv->preset[id] = preset; /* Reset Byte Pointer */ outb(QUAD8_CTR_RLD | QUAD8_RLD_RESET_BP, base_offset + 1); @@ -1160,7 +651,7 @@ static void quad8_preset_register_set(struct quad8_iio *quad8iio, int id, static ssize_t quad8_count_preset_write(struct counter_device *counter, struct counter_count *count, void *private, const char *buf, size_t len) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; unsigned int preset; int ret; @@ -1184,7 +675,7 @@ static ssize_t quad8_count_preset_write(struct counter_device *counter, static ssize_t quad8_count_ceiling_read(struct counter_device *counter, struct counter_count *count, void *private, char *buf) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; mutex_lock(&priv->lock); @@ -1205,7 +696,7 @@ static ssize_t quad8_count_ceiling_read(struct counter_device *counter, static ssize_t quad8_count_ceiling_write(struct counter_device *counter, struct counter_count *count, void *private, const char *buf, size_t len) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; unsigned int ceiling; int ret; @@ -1235,7 +726,7 @@ static ssize_t quad8_count_ceiling_write(struct counter_device *counter, static ssize_t quad8_count_preset_enable_read(struct counter_device *counter, struct counter_count *count, void *private, char *buf) { - const struct quad8_iio *const priv = counter->priv; + const struct quad8 *const priv = counter->priv; return sprintf(buf, "%u\n", !priv->preset_enable[count->id]); } @@ -1243,7 +734,7 @@ static ssize_t quad8_count_preset_enable_read(struct counter_device *counter, static ssize_t quad8_count_preset_enable_write(struct counter_device *counter, struct counter_count *count, void *private, const char *buf, size_t len) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; const int base_offset = priv->base + 2 * count->id + 1; bool preset_enable; int ret; @@ -1274,7 +765,7 @@ static ssize_t quad8_signal_cable_fault_read(struct counter_device *counter, struct counter_signal *signal, void *private, char *buf) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; const size_t channel_id = signal->id / 2; bool disabled; unsigned int status; @@ -1304,7 +795,7 @@ static ssize_t quad8_signal_cable_fault_enable_read( struct counter_device *counter, struct counter_signal *signal, void *private, char *buf) { - const struct quad8_iio *const priv = counter->priv; + const struct quad8 *const priv = counter->priv; const size_t channel_id = signal->id / 2; const unsigned int enb = !!(priv->cable_fault_enable & BIT(channel_id)); @@ -1315,7 +806,7 @@ static ssize_t quad8_signal_cable_fault_enable_write( struct counter_device *counter, struct counter_signal *signal, void *private, const char *buf, size_t len) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; const size_t channel_id = signal->id / 2; bool enable; int ret; @@ -1345,7 +836,7 @@ static ssize_t quad8_signal_cable_fault_enable_write( static ssize_t quad8_signal_fck_prescaler_read(struct counter_device *counter, struct counter_signal *signal, void *private, char *buf) { - const struct quad8_iio *const priv = counter->priv; + const struct quad8 *const priv = counter->priv; const size_t channel_id = signal->id / 2; return sprintf(buf, "%u\n", priv->fck_prescaler[channel_id]); @@ -1355,7 +846,7 @@ static ssize_t quad8_signal_fck_prescaler_write(struct counter_device *counter, struct counter_signal *signal, void *private, const char *buf, size_t len) { - struct quad8_iio *const priv = counter->priv; + struct quad8 *const priv = counter->priv; const size_t channel_id = signal->id / 2; const int base_offset = priv->base + 2 * channel_id; u8 prescaler; @@ -1531,11 +1022,9 @@ static struct counter_count quad8_counts[] = { static int quad8_probe(struct device *dev, unsigned int id) { - struct iio_dev *indio_dev; - struct quad8_iio *quad8iio; + struct quad8 *priv; int i, j; unsigned int base_offset; - int err; if (!devm_request_region(dev, base[id], QUAD8_EXTENT, dev_name(dev))) { dev_err(dev, "Unable to lock port addresses (0x%X-0x%X)\n", @@ -1543,32 +1032,23 @@ static int quad8_probe(struct device *dev, unsigned int id) return -EBUSY; } - /* Allocate IIO device; this also allocates driver data structure */ - indio_dev = devm_iio_device_alloc(dev, sizeof(*quad8iio)); - if (!indio_dev) + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) return -ENOMEM; - /* Initialize IIO device */ - indio_dev->info = &quad8_info; - indio_dev->modes = INDIO_DIRECT_MODE; - indio_dev->num_channels = ARRAY_SIZE(quad8_channels); - indio_dev->channels = quad8_channels; - indio_dev->name = dev_name(dev); - /* Initialize Counter device and driver data */ - quad8iio = iio_priv(indio_dev); - quad8iio->counter.name = dev_name(dev); - quad8iio->counter.parent = dev; - quad8iio->counter.ops = &quad8_ops; - quad8iio->counter.counts = quad8_counts; - quad8iio->counter.num_counts = ARRAY_SIZE(quad8_counts); - quad8iio->counter.signals = quad8_signals; - quad8iio->counter.num_signals = ARRAY_SIZE(quad8_signals); - quad8iio->counter.priv = quad8iio; - quad8iio->base = base[id]; + priv->counter.name = dev_name(dev); + priv->counter.parent = dev; + priv->counter.ops = &quad8_ops; + priv->counter.counts = quad8_counts; + priv->counter.num_counts = ARRAY_SIZE(quad8_counts); + priv->counter.signals = quad8_signals; + priv->counter.num_signals = ARRAY_SIZE(quad8_signals); + priv->counter.priv = priv; + priv->base = base[id]; /* Initialize mutex */ - mutex_init(&quad8iio->lock); + mutex_init(&priv->lock); /* Reset all counters and disable interrupt function */ outb(QUAD8_CHAN_OP_RESET_COUNTERS, base[id] + QUAD8_REG_CHAN_OP); @@ -1602,13 +1082,8 @@ static int quad8_probe(struct device *dev, unsigned int id) /* Enable all counters */ outb(QUAD8_CHAN_OP_ENABLE_COUNTERS, base[id] + QUAD8_REG_CHAN_OP); - /* Register IIO device */ - err = devm_iio_device_register(dev, indio_dev); - if (err) - return err; - /* Register Counter device */ - return devm_counter_register(dev, &quad8iio->counter); + return devm_counter_register(dev, &priv->counter); } static struct isa_driver quad8_driver = { @@ -1621,5 +1096,5 @@ static struct isa_driver quad8_driver = { module_isa_driver(quad8_driver, num_quad8); MODULE_AUTHOR("William Breathitt Gray <vilhelm.gray@gmail.com>"); -MODULE_DESCRIPTION("ACCES 104-QUAD-8 IIO driver"); +MODULE_DESCRIPTION("ACCES 104-QUAD-8 driver"); MODULE_LICENSE("GPL v2"); |