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Commit 5921180c authored by Mohan Pallaka's avatar Mohan Pallaka
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msm: qpnp-haptic: wait for 5 cycles before BUSY check 



After the haptics is stopped it might take few cycles to
activate braking. Update the wait time to 5 cycles of
play rate to optimize the wait time.

Change-Id: I1a29cebcd41f541493e79224bf71f4546a9e2541
CRs-fixed: 760524
Signed-off-by: default avatarMohan Pallaka <mpallaka@codeaurora.org>
parent ba6ee8cf

drivers/platform/msm/qpnp-haptic.c

+7 −4
Original line number Diff line number Diff line
@@ -113,6 +113,7 @@ 
#define QPNP_HAP_TIMEOUT_MS_MAX		15000

#define QPNP_HAP_STR_SIZE		20

#define QPNP_HAP_MAX_RETRIES		5

#define QPNP_HAP_CYCLS			5



/* haptic debug register set */

static u8 qpnp_hap_dbg_regs[] = {
@@ -281,10 +282,12 @@ static int qpnp_hap_mod_enable(struct qpnp_hap *hap, int on) 


			dev_dbg(&hap->spmi->dev, "HAP_STATUS=0x%x\n", val);



			/* wait for 4 cycles of play rate */

			if (val & QPNP_HAP_STATUS_BUSY)

				usleep(4 * hap->wave_play_rate_us);

			else

			/* wait for QPNP_HAP_CYCLS cycles of play rate */

			if (val & QPNP_HAP_STATUS_BUSY) {

				usleep(QPNP_HAP_CYCLS * hap->wave_play_rate_us);

				if (hap->play_mode == QPNP_HAP_DIRECT)

					break;

			} else

				break;

		}