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author | davidycchen <davidycchen@google.com> | 2022-02-15 13:45:19 +0800 |
---|---|---|
committer | Yen-Chao Chen <davidycchen@google.com> | 2022-02-21 07:54:52 +0000 |
commit | 15833c2bfe2d17dc577e6476b6673b0e058ea341 (patch) | |
tree | 6bb32ed3a62d402c9e93711cafac0b62d742cb48 /syna_tcm2.c | |
parent | d0732879a8fe169c58e3ced5d79d4ca1a627b4f0 (diff) | |
download | synaptics_touch-15833c2bfe2d17dc577e6476b6673b0e058ea341.tar.gz |
synaptics: enable continuously touch reporting
Support dynamic changing motion filter status and continuously report
touch coordinates and heatmap for 500ms when there is only one finger
on the screen.
Bug: 199104356.
Test: Motion filter status is correct for single finger and multiple
fingers.
Signed-off-by: davidycchen <davidycchen@google.com>
Change-Id: I428f1b9d91779f6fe5376bd38980513f33fa4d8d
Diffstat (limited to 'syna_tcm2.c')
-rw-r--r-- | syna_tcm2.c | 87 |
1 files changed, 87 insertions, 0 deletions
diff --git a/syna_tcm2.c b/syna_tcm2.c index 584275d..ffff0ce 100644 --- a/syna_tcm2.c +++ b/syna_tcm2.c @@ -297,6 +297,83 @@ static void syna_dev_restore_feature_setting(struct syna_tcm *tcm) (tcm->enable_fw_grip & 0x01), RESP_IN_POLLING); } +/* Update a state machine used to toggle control of the touch IC's motion + * filter. + */ +static int syna_update_motion_filter(struct syna_tcm *tcm, u8 touches) +{ + /* Motion filter timeout, in milliseconds */ + const u32 mf_timeout_ms = 500; + u8 next_state; + + if (tcm->mf_mode == 0) { + if (touches != 0) + next_state = MF_UNFILTERED; + else + next_state = MF_FILTERED; + } else if (tcm->mf_mode == 1) { + /* Determine the next filter state. The motion filter is enabled by + * default and it is disabled while a single finger is touching the + * screen. If another finger is touched down or if a timeout expires, + * the motion filter is reenabled and remains enabled until all fingers + * are lifted. + */ + next_state = tcm->mf_state; + switch (tcm->mf_state) { + case MF_FILTERED: + if (touches == 1) { + next_state = MF_UNFILTERED; + tcm->mf_downtime = ktime_get(); + } + break; + case MF_UNFILTERED: + if (touches == 0) { + next_state = MF_FILTERED; + } else if (touches > 1 || + ktime_after(ktime_get(), + ktime_add_ms(tcm->mf_downtime, + mf_timeout_ms))) { + next_state = MF_FILTERED_LOCKED; + } + break; + case MF_FILTERED_LOCKED: + if (touches == 0) { + next_state = MF_FILTERED; + } + break; + } + } else if (tcm->mf_mode == 2) { + next_state = MF_FILTERED; + } else { + /* Set 0 as default when an invalid value is found. */ + tcm->mf_mode = 0; + return 0; + } + + /* Queue work to update filter state */ + if ((next_state == MF_UNFILTERED) != + (tcm->mf_state == MF_UNFILTERED)) { + tcm->set_continuously_report = (next_state == MF_UNFILTERED) ? 0x01 : 0x00; + queue_work(tcm->event_wq, &tcm->motion_filter_work); + } + + tcm->mf_state = next_state; + + return 0; +} + +static void syna_motion_filter_work(struct work_struct *work) +{ + struct syna_tcm *tcm = container_of(work, struct syna_tcm, motion_filter_work); + + /* Send command to update filter state */ + LOGD("setting motion filter = %s.\n", + tcm->set_continuously_report ? "false" : "true"); + syna_tcm_set_dynamic_config(tcm->tcm_dev, + DC_CONTINUOUSLY_REPORT, + tcm->set_continuously_report, + RESP_IN_ATTN); +} #ifdef ENABLE_CUSTOM_TOUCH_ENTITY /** @@ -657,6 +734,8 @@ static void syna_dev_report_input_events(struct syna_tcm *tcm) input_set_timestamp(input_dev, tcm->coords_timestamp); input_sync(input_dev); + syna_update_motion_filter(tcm, touch_count); + #if IS_ENABLED(CONFIG_TOUCHSCREEN_OFFLOAD) } #endif @@ -881,6 +960,7 @@ static void syna_offload_report(void *handle, struct syna_tcm *tcm = (struct syna_tcm *)handle; bool touch_down = 0; int i; + int touch_count = 0; syna_pal_mutex_lock(&tcm->tp_event_mutex); @@ -889,6 +969,7 @@ static void syna_offload_report(void *handle, for (i = 0; i < MAX_COORDS; i++) { if (report->coords[i].status == COORD_STATUS_FINGER) { input_mt_slot(tcm->input_dev, i); + touch_count++; touch_down = 1; input_report_key(tcm->input_dev, BTN_TOUCH, touch_down); @@ -919,6 +1000,7 @@ static void syna_offload_report(void *handle, input_report_key(tcm->input_dev, BTN_TOOL_FINGER, touch_down); input_sync(tcm->input_dev); + syna_update_motion_filter(tcm, touch_count); syna_pal_mutex_unlock(&tcm->tp_event_mutex); } @@ -2541,6 +2623,11 @@ static int syna_dev_probe(struct platform_device *pdev) goto err_heatmap_probe; #endif + /* init motion filter mode */ + tcm->mf_mode = 0; + + INIT_WORK(&tcm->motion_filter_work, syna_motion_filter_work); + #ifdef HAS_SYSFS_INTERFACE /* create the device file and register to char device classes */ retval = syna_cdev_create_sysfs(tcm, pdev); |