@@ -40,7 +40,6 @@
#define IQS7222_SLDR_SETUP_2_RES_MASK GENMASK(15, 8)
#define IQS7222_SLDR_SETUP_2_RES_SHIFT 8
#define IQS7222_SLDR_SETUP_2_TOP_SPEED_MASK GENMASK(7, 0)
-#define IQS7222_SLDR_SETUP_3_CHAN_SEL_MASK GENMASK(9, 0)
#define IQS7222_GPIO_SETUP_0_GPIO_EN BIT(0)
@@ -54,6 +53,9 @@
#define IQS7222_SYS_SETUP_ACK_RESET BIT(0)
#define IQS7222_EVENT_MASK_ATI BIT(12)
+#define IQS7222_EVENT_MASK_SLDR BIT(10)
+#define IQS7222_EVENT_MASK_TOUCH BIT(1)
+#define IQS7222_EVENT_MASK_PROX BIT(0)
#define IQS7222_COMMS_HOLD BIT(0)
#define IQS7222_COMMS_ERROR 0xEEEE
@@ -135,12 +137,12 @@ struct iqs7222_event_desc {
static const struct iqs7222_event_desc iqs7222_kp_events[] = {
{
.name = "event-prox",
- .enable = BIT(0),
+ .enable = IQS7222_EVENT_MASK_PROX,
.reg_key = IQS7222_REG_KEY_PROX,
},
{
.name = "event-touch",
- .enable = BIT(1),
+ .enable = IQS7222_EVENT_MASK_TOUCH,
.reg_key = IQS7222_REG_KEY_TOUCH,
},
};
@@ -1957,8 +1959,8 @@ static int iqs7222_parse_sldr(struct iqs7222_private *iqs7222, int sldr_index)
int num_chan = dev_desc->reg_grps[IQS7222_REG_GRP_CHAN].num_row;
int ext_chan = rounddown(num_chan, 10);
int count, error, reg_offset, i;
+ u16 *event_mask = &iqs7222->sys_setup[dev_desc->event_offset];
u16 *sldr_setup = iqs7222->sldr_setup[sldr_index];
- u16 *sys_setup = iqs7222->sys_setup;
unsigned int chan_sel[4], val;
error = iqs7222_parse_props(iqs7222, &sldr_node, sldr_index,
@@ -2003,7 +2005,7 @@ static int iqs7222_parse_sldr(struct iqs7222_private *iqs7222, int sldr_index)
reg_offset = dev_desc->sldr_res < U16_MAX ? 0 : 1;
sldr_setup[0] |= count;
- sldr_setup[3 + reg_offset] &= ~IQS7222_SLDR_SETUP_3_CHAN_SEL_MASK;
+ sldr_setup[3 + reg_offset] &= ~GENMASK(ext_chan - 1, 0);
for (i = 0; i < ARRAY_SIZE(chan_sel); i++) {
sldr_setup[5 + reg_offset + i] = 0;
@@ -2120,7 +2122,13 @@ static int iqs7222_parse_sldr(struct iqs7222_private *iqs7222, int sldr_index)
* coordinate field reports 0xFFFF and has no explicit enable
* control.
*/
- if (!iqs7222_sl_events[i].enable || reg_offset)
+ if (!iqs7222_sl_events[i].enable) {
+ if (dev_desc->event_offset)
+ *event_mask |= IQS7222_EVENT_MASK_TOUCH;
+ continue;
+ }
+
+ if (reg_offset)
continue;
sldr_setup[9] |= iqs7222_sl_events[i].enable;
@@ -2131,10 +2139,8 @@ static int iqs7222_parse_sldr(struct iqs7222_private *iqs7222, int sldr_index)
if (error)
return error;
- if (!dev_desc->event_offset)
- continue;
-
- sys_setup[dev_desc->event_offset] |= BIT(10 + sldr_index);
+ if (dev_desc->event_offset)
+ *event_mask |= (IQS7222_EVENT_MASK_SLDR << sldr_index);
}
/*
@@ -2299,29 +2305,37 @@ static int iqs7222_report(struct iqs7222_private *iqs7222)
input_report_abs(iqs7222->keypad, iqs7222->sl_axis[i],
sldr_pos);
- for (j = 0; j < ARRAY_SIZE(iqs7222_sl_events); j++) {
- u16 mask = iqs7222_sl_events[j].mask;
- u16 val = iqs7222_sl_events[j].val;
+ input_report_key(iqs7222->keypad, iqs7222->sl_code[i][0],
+ sldr_pos < dev_desc->sldr_res);
- if (!iqs7222_sl_events[j].enable) {
- input_report_key(iqs7222->keypad,
- iqs7222->sl_code[i][j],
- sldr_pos < dev_desc->sldr_res);
- continue;
- }
+ /*
+ * A maximum resolution indicates the device does not support
+ * gestures, in which case the remaining fields are ignored.
+ */
+ if (dev_desc->sldr_res == U16_MAX)
+ continue;
- /*
- * The remaining offsets represent gesture state, and
- * are discarded in the case of IQS7222C because only
- * absolute position is reported.
- */
- if (num_stat < IQS7222_MAX_COLS_STAT)
- continue;
+ if (!(le16_to_cpu(status[1]) & IQS7222_EVENT_MASK_SLDR << i))
+ continue;
+
+ /*
+ * Skip the press/release event, as it does not have separate
+ * status fields and is handled separately.
+ */
+ for (j = 1; j < ARRAY_SIZE(iqs7222_sl_events); j++) {
+ u16 mask = iqs7222_sl_events[j].mask;
+ u16 val = iqs7222_sl_events[j].val;
input_report_key(iqs7222->keypad,
iqs7222->sl_code[i][j],
(state & mask) == val);
}
+
+ input_sync(iqs7222->keypad);
+
+ for (j = 1; j < ARRAY_SIZE(iqs7222_sl_events); j++)
+ input_report_key(iqs7222->keypad,
+ iqs7222->sl_code[i][j], 0);
}
input_sync(iqs7222->keypad);
The release cycle of any key mapped to a slider gesture relies upon trailing interrupts generated by other unmasked sources, the timing and presence of which are inconsistent. To solve this problem, explicitly report a release cycle to emulate a full keystroke. Also, unmask touch interrupts if the slider press event is defined; this ensures the device reports a final interrupt with coordinate = 0xFFFF once the finger is lifted. As part of this change, use the device's resolution rather than its number of interrupt status registers to more safely determine if it is capable of reporting gestures. Last but not least, make the code a bit simpler by eliminating some unnecessarily complex conditional statements and a macro that could be derived using information that is already available. Fixes: e505edaedcb9 ("Input: add support for Azoteq IQS7222A/B/C") Signed-off-by: Jeff LaBundy <jeff@labundy.com> --- drivers/input/misc/iqs7222.c | 66 ++++++++++++++++++++++-------------- 1 file changed, 40 insertions(+), 26 deletions(-)