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Check the value to be written

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TP:
If the value need to be written is the same as the previously saved 
value, no longer access I2C and return size directly..



Change-Id: I6a7942e4bba3c1a219d1052a3a0377895da10a40
Reviewed-on: https://gerrit.mot.com/1517835
SME-Granted: SME Approvals Granted
SLTApproved: Slta Waiver
Tested-by: Jira Key
Reviewed-by: Jialei Hao <haojl2@motorola.com>
Reviewed-by: Jianqi Yang <yangj@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
litong 2020-03-20 14:39:50 +08:00 • committed by litong20
commit b08bd2b676
1 changed files with 18 additions and 0 deletions
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18
drivers/input/touchscreen/sec_mmi/sec_ts_mmi_class.c
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@ -249,6 +249,10 @@ static ssize_t sec_mmi_suppression_store(struct device *dev,
buffer = (unsigned char)value;
dev_dbg(dev, "%s: program value 0x%02x\n", __func__, (unsigned int)buffer);
if (ts->suppression_data == buffer) {
dev_dbg(dev, "%s: value is same,so not write.\n", __func__);
return size;
}
ts->suppression_data = buffer;
if (ts->power_status == SEC_TS_STATE_POWER_OFF) {
dev_dbg(dev, "%s: power off state\n", __func__);
@ -359,6 +363,11 @@ static ssize_t sec_mmi_pill_region_store(struct device *dev,
(unsigned int)buffer[2], (unsigned int)buffer[3],
(unsigned int)buffer[4]);
if (!strncmp(buffer, ts->pill_region_data, sizeof(buffer))) {
dev_dbg(dev, "%s: value is same,so not write.\n", __func__);
return size;
}
memcpy(ts->pill_region_data, buffer, sizeof(ts->pill_region_data));
if (ts->power_status == SEC_TS_STATE_POWER_OFF) {
dev_dbg(dev, "%s: power off state\n", __func__);
@ -439,6 +448,10 @@ static ssize_t sec_mmi_hold_distance_store(struct device *dev,
buffer = (unsigned char)value;
dev_dbg(dev, "%s: program value 0x%02x\n", __func__, (unsigned int)buffer);
if (ts->hold_distance_data == buffer) {
dev_dbg(dev, "%s: value is same,so not write.\n", __func__);
return size;
}
ts->hold_distance_data = buffer;
if (ts->power_status == SEC_TS_STATE_POWER_OFF) {
dev_dbg(dev, "%s: power off state\n", __func__);
@ -496,6 +509,11 @@ static ssize_t sec_mmi_gs_distance_store(struct device *dev,
if (error)
return -EINVAL;
if (ts->gs_distance_data == buffer) {
dev_dbg(dev, "%s: value is same,so not write.\n", __func__);
return size;
}
buffer = (unsigned char)value;
dev_dbg(dev, "%s: program value 0x%02x\n", __func__, (unsigned int)buffer);