+static int sx9500_inc_users(struct sx9500_data *data, int *counter,
+ unsigned int reg, unsigned int bitmask)
+{
+ (*counter)++;
+ if (*counter != 1)
+ /* Bit is already active, nothing to do. */
+ return 0;
+
+ return regmap_update_bits(data->regmap, reg, bitmask, bitmask);
+}
+
+static int sx9500_dec_users(struct sx9500_data *data, int *counter,
+ unsigned int reg, unsigned int bitmask)
+{
+ (*counter)--;
+ if (*counter != 0)
+ /* There are more users, do not deactivate. */
+ return 0;
+
+ return regmap_update_bits(data->regmap, reg, bitmask, 0);
+}
+
+static int sx9500_inc_chan_users(struct sx9500_data *data, int chan)
+{
+ return sx9500_inc_users(data, &data->channel_users[chan],
+ SX9500_REG_PROX_CTRL0, BIT(chan));
+}
+
+static int sx9500_dec_chan_users(struct sx9500_data *data, int chan)
+{
+ return sx9500_dec_users(data, &data->channel_users[chan],
+ SX9500_REG_PROX_CTRL0, BIT(chan));
+}
+
+static int sx9500_inc_data_rdy_users(struct sx9500_data *data)
+{
+ return sx9500_inc_users(data, &data->data_rdy_users,
+ SX9500_REG_IRQ_MSK, SX9500_CONVDONE_IRQ);
+}
+
+static int sx9500_dec_data_rdy_users(struct sx9500_data *data)
+{
+ return sx9500_dec_users(data, &data->data_rdy_users,
+ SX9500_REG_IRQ_MSK, SX9500_CONVDONE_IRQ);
+}
+
+static int sx9500_inc_close_far_users(struct sx9500_data *data)
+{
+ return sx9500_inc_users(data, &data->close_far_users,
+ SX9500_REG_IRQ_MSK,
+ SX9500_CLOSE_IRQ | SX9500_FAR_IRQ);
+}
+
+static int sx9500_dec_close_far_users(struct sx9500_data *data)
+{
+ return sx9500_dec_users(data, &data->close_far_users,
+ SX9500_REG_IRQ_MSK,
+ SX9500_CLOSE_IRQ | SX9500_FAR_IRQ);
+}
+
+static int sx9500_read_prox_data(struct sx9500_data *data,