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Revert "touchscreen: cyttsp-i2c-qc: Configure low power mode based on pdata"

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This reverts commit 4c43345774.
low power mode changes are causing issues like,delay in reponse to
touch , and controller is not recognizing the touch events as its
scan rate is also low in low power mode state . since controller is
not recognizing the touch in low power mode state , so only way
for the controller to come out of low power mode is to do multi-touch
and controller responds randomly to one of the touches and comes out
of the low power mode.

Change-Id: Iee6a23cd776c9eeb12216675104fd139f05b87ab
Signed-off-by: Sreenivasulu Chalam Charla <sreeniva@codeaurora.org>
This commit is contained in:
Sreenivasulu Chalam Charla
2012-10-10 18:14:12 +05:30
parent 389bd44dbf
commit 6e36e44cfe
1 changed files with 9 additions and 25 deletions
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drivers/input/touchscreen/cyttsp-i2c-qc.c
+9 -25
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@@ -423,7 +423,7 @@ static void cyttsp_exit_bl_mode(struct cyttsp *ts)
static int cyttsp_set_sysinfo_mode(struct cyttsp *ts, u8 sleep)
{
int retval;
u8 mode = CY_SYSINFO_MODE | sleep;
u8 mode = CY_SYSINFO_MODE + sleep;
cyttsp_change_state(ts, CY_SYSINFO);
@@ -449,10 +449,10 @@ cyttsp_set_sysinfo_mode_exit:
return retval;
}
static int cyttsp_set_opmode(struct cyttsp *ts, u8 sleep)
static void cyttsp_set_opmode(struct cyttsp *ts, u8 sleep)
{
int retval, tries = 0;
u8 host_reg = CY_OP_MODE | sleep;
u8 host_reg = CY_OP_MODE + sleep;
cyttsp_change_state(ts, CY_ACTIVE);
do {
@@ -461,8 +461,6 @@ static int cyttsp_set_opmode(struct cyttsp *ts, u8 sleep)
if (retval < 0)
msleep(20);
} while (tries++ < 10 && (retval < 0));
return retval;
}
static int cyttsp_set_lp_mode(struct cyttsp *ts)
@@ -881,8 +879,7 @@ static void cyttspfw_flash_start(struct cyttsp *ts, const u8 *data,
cyttsp_exit_bl_mode(ts);
msleep(100);
/* set low power mode and enter application mode*/
if (ts->platform_data->use_sleep & CY_LOW_PWR_MODE)
cyttsp_set_lp_mode(ts);
cyttsp_set_lp_mode(ts);
}
static void cyttspfw_upgrade_start(struct cyttsp *ts, const u8 *data,
@@ -1158,9 +1155,7 @@ static void cyttsp_xy_handler(struct cyttsp *ts)
tries++ < 100);
cyttsp_putbl(ts, 2, true, false, false);
}
if (ts->platform_data->use_sleep & CY_LOW_PWR_MODE)
cyttsp_set_lp_mode(ts);
cyttsp_set_lp_mode(ts);
goto exit_xy_handler;
} else {
cur_tch = GET_NUM_TOUCHES(g_xy_data.tt_stat);
@@ -2541,11 +2536,7 @@ static int set_bypass_modes(struct cyttsp *ts)
/* switch to System Information mode to read versions
* and set interval registers */
if (ts->platform_data->use_sleep & CY_LOW_PWR_MODE)
retval = cyttsp_set_sysinfo_mode(ts, CY_LOW_PWR_MODE);
else
retval = cyttsp_set_opmode(ts, CY_OP_MODE);
retval = cyttsp_set_sysinfo_mode(ts, CY_LOW_PWR_MODE);
if (!(retval < CY_OK)) {
retval = i2c_smbus_read_i2c_block_data(ts->client,
CY_REG_BASE,
@@ -2567,10 +2558,7 @@ static int set_bypass_modes(struct cyttsp *ts)
/* switch back to Operational mode */
cyttsp_debug("switch back to operational mode\n");
if (!(retval < CY_OK)) {
if (ts->platform_data->use_sleep & CY_LOW_PWR_MODE)
cyttsp_set_opmode(ts, CY_LOW_PWR_MODE);
else
cyttsp_set_opmode(ts, CY_OP_MODE);
cyttsp_set_opmode(ts, CY_LOW_PWR_MODE);
/* wait for TTSP Device to complete
* switch to Operational mode */
msleep(100);
@@ -2971,8 +2959,7 @@ static int __devinit cyttsp_probe(struct i2c_client *client,
#endif /* CONFIG_HAS_EARLYSUSPEND */
device_init_wakeup(&client->dev, ts->platform_data->wakeup);
mutex_init(&ts->mutex);
if (ts->platform_data->use_sleep & CY_LOW_PWR_MODE)
retval = cyttsp_set_lp_mode(ts);
retval = cyttsp_set_lp_mode(ts);
cyttsp_info("Start Probe %s\n", \
(retval < CY_OK) ? "FAIL" : "PASS");
@@ -3109,10 +3096,7 @@ static int cyttsp_resume(struct device *dev)
cyttsp_debug("Wake Up %s\n", \
(retval < CY_OK) ? "FAIL" : "PASS");
if (ts->platform_data->use_sleep & CY_LOW_PWR_MODE)
retval = cyttsp_set_lp_mode(ts);
return retval;
return cyttsp_set_lp_mode(ts);
}
/* Function to manage low power suspend */