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Syna: USB detection support

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Added USB cable detection support to better handle charging noise.
This is optional feature controlled via device tree property
mmi,usb-charger-detection. 

Change-Id: Ie7ec0625d1712da94926d1903810a9ec1b497779
Reviewed-on: https://gerrit.mot.com/1543354
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Jialei Hao <haojl2@motorola.com>
Reviewed-by: Tao Sun <suntao2@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
litong 2020-04-27 19:23:46 +08:00 • committed by litong20
commit 9380aa9a8d
1 changed files with 43 additions and 0 deletions
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43
drivers/input/touchscreen/synaptics_tcm_mmi_v2/synaptics_ts_mmi.c
View file

@ -632,6 +632,48 @@ static int syna_ts_mmi_panel_state(struct device *dev,
return 0;
}
static int syna_ts_mmi_charger_mode(struct device *dev, int mode)
{
int retval;
unsigned short cval = 0;
struct syna_tcm_hcd *tcm_hcd;
struct platform_device *pdev;
GET_SYNA_DATA(dev);
if (tcm_hcd->irq_enabled == false) {
dev_info(dev, "%s, Interrupt is closed, so cannot access CHARGER_CONNECTED\n",
__func__);
return -EINVAL;
}
mutex_lock(&tcm_hcd->extif_mutex);
retval = tcm_hcd->get_dynamic_config(tcm_hcd, DC_CHARGER_CONNECTED, &cval);
if (retval < 0) {
LOGE(tcm_hcd->pdev->dev.parent,
"Failed to get charger_connected mode\n");
goto exit;
}
dev_dbg(dev, "%s: Set charger mode:%d, charger current mode:%d\n",
__func__, mode, cval);
if (cval != mode) {
retval = tcm_hcd->set_dynamic_config(tcm_hcd, DC_CHARGER_CONNECTED, mode);
if (retval < 0) {
LOGE(tcm_hcd->pdev->dev.parent,
"Failed to set charger_connected mode\n");
goto exit;
}
} else
dev_info(dev, "%s: charger mode already %d\n", __func__, cval);
exit:
mutex_unlock(&tcm_hcd->extif_mutex);
return 0;
}
static struct ts_mmi_methods syna_ts_mmi_methods = {
.get_vendor = syna_ts_mmi_methods_get_vendor,
.get_productinfo = syna_ts_mmi_methods_get_productinfo,
@ -646,6 +688,7 @@ static struct ts_mmi_methods syna_ts_mmi_methods = {
.reset = syna_ts_mmi_methods_reset,
.drv_irq = syna_ts_mmi_methods_drv_irq,
.power = syna_ts_mmi_methods_power,
.charger_mode = syna_ts_mmi_charger_mode,
/* Firmware */
.firmware_update = syna_ts_firmware_update,
/* vendor specific attribute group */