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aw8695: A fix of rtp playing from Awinic

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When frequently making a phone call and declining it, the waveform
playing sometimes would fail to work due to the limitation of i2c's
transmission speed.

Awinic provides this solution and it not only works fine but also has
been integrated to all their new software releases, even for aw8697.

NO_PROP_NEEDED: This propagation is only needed when the change of
framework for this new feature is integrated, being done by engineers
in charge of that product.

Change-Id: I6fea17ac70b0781e4e395c3f3c4e9bd2859d6f66
Signed-off-by: yangjq <yangjq@lenovo.com>
Reviewed-on: https://gerrit.mot.com/1616513
SLTApproved: Slta Waiver
SME-Granted: SME Approvals Granted
Tested-by: Jira Key
Reviewed-by: Jianqi Yang <yangj@motorola.com>
Submit-Approved: Jira Key
This commit is contained in:
yangjq 2020-06-12 18:14:17 +08:00 • committed by Jianqi Yang
commit f70e023e1a
1 changed files with 16 additions and 2 deletions
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18
drivers/misc/awinic/aw8695/aw8695.c
View file

@ -27,6 +27,7 @@
#include <linux/debugfs.h>
#include <linux/miscdevice.h>
#include <asm/uaccess.h>
#include <linux/pm_qos.h>
#include <linux/syscalls.h>
#include <linux/power_supply.h>
#include "aw8695.h"
@ -61,6 +62,10 @@
#define AW8695_SEQ_NO_RTP_STOP 120000
#define AW8695_REPEAT_RTP_PLAYING
#define PM_QOS_VALUE_VB 400
struct pm_qos_request pm_qos_req_vb;
/******************************************************
*
* variable
@ -1146,6 +1151,7 @@ static int aw8695_haptic_rtp_init(struct aw8695 *aw8695)
unsigned char reg_val = 0;
pr_info("%s enter\n", __func__);
pm_qos_add_request(&pm_qos_req_vb, PM_QOS_CPU_DMA_LATENCY, PM_QOS_VALUE_VB);
aw8695->rtp_cnt = 0;
@ -1156,7 +1162,14 @@ static int aw8695_haptic_rtp_init(struct aw8695 *aw8695)
pr_info("%s:aw8695_rtp is null break\n", __func__);
break;
}
if ((aw8695_rtp->len - aw8695->rtp_cnt) < (aw8695->ram.base_addr >> 2)) {
if ((aw8695->rtp_cnt < aw8695->ram.base_addr)) {
if((aw8695_rtp->len-aw8695->rtp_cnt) < (aw8695->ram.base_addr)){
buf_len = aw8695_rtp->len-aw8695->rtp_cnt;
} else {
buf_len = (aw8695->ram.base_addr);
}
} else if ((aw8695_rtp->len - aw8695->rtp_cnt) < (aw8695->ram.base_addr >> 2)) {
buf_len = aw8695_rtp->len - aw8695->rtp_cnt;
} else {
buf_len = (aw8695->ram.base_addr >> 2);
@ -1169,6 +1182,7 @@ static int aw8695_haptic_rtp_init(struct aw8695 *aw8695)
if ((aw8695->rtp_cnt == aw8695_rtp->len) || ((reg_val & 0x0f) == 0x00)) {
pr_info("%s: rtp update complete\n", __func__);
aw8695->rtp_cnt = 0;
pm_qos_remove_request(&pm_qos_req_vb);
return 0;
}
}
@ -1176,7 +1190,7 @@ static int aw8695_haptic_rtp_init(struct aw8695 *aw8695)
if (aw8695->play_mode == AW8695_HAPTIC_RTP_MODE) {
aw8695_haptic_set_rtp_aei(aw8695, true);
}
pm_qos_remove_request(&pm_qos_req_vb);
pr_info("%s exit\n", __func__);
return 0;