#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>
#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
* @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];
#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 */
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;
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;
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);
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;
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;
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;
.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];
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;
.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];
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;
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]) {
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;
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]);
}
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;
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);
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);
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;
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);
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;
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]);
}
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;
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;
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));
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;
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]);
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;
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",
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);
/* 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 = {
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");
projects / platform / kernel / linux-starfive.git / commitdiff