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soc: soundwire: Avoid bus clash during clock stop

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Mask bus clash interrupt before clock stop mode to avoid
misfire of the interrupt. Clear and enable the interrupt
after clock is enabled.

Change-Id: I494073a668d298eef466c0f10ab202c3c69f9968
Signed-off-by: Sudheer Papothi <spapothi@codeaurora.org>
This commit is contained in:
Sudheer Papothi
2019-09-28 02:50:27 +05:30
committed by Aditya Bavanari
parent 8bcaeab611
commit 55fa597e30
1 changed files with 15 additions and 0 deletions
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15
soc/swr-mstr-ctrl.c
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@@ -2691,6 +2691,14 @@ static int swrm_runtime_resume(struct device *dev)
} else {
/*wake up from clock stop*/
swr_master_write(swrm, SWRM_MCP_BUS_CTRL_ADDR, 0x2);
/* clear and enable bus clash interrupt */
swr_master_write(swrm, SWRM_INTERRUPT_CLEAR, 0x08);
swrm->intr_mask |= 0x08;
swr_master_write(swrm, SWRM_INTERRUPT_MASK_ADDR,
swrm->intr_mask);
swr_master_write(swrm,
SWR_MSTR_RX_SWRM_CPU_INTERRUPT_EN,
swrm->intr_mask);
usleep_range(100, 105);
if (!swrm_check_link_status(swrm, 0x1))
goto exit;
@@ -2772,6 +2780,13 @@ static int swrm_runtime_suspend(struct device *dev)
}
}
} else {
/* Mask bus clash interrupt */
swrm->intr_mask &= ~((u32)0x08);
swr_master_write(swrm, SWRM_INTERRUPT_MASK_ADDR,
swrm->intr_mask);
swr_master_write(swrm,
SWR_MSTR_RX_SWRM_CPU_INTERRUPT_EN,
swrm->intr_mask);
mutex_unlock(&swrm->reslock);
/* clock stop sequence */
swrm_cmd_fifo_wr_cmd(swrm, 0x2, 0xF, 0xF,