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imxrt:lpi2c end only on stop with end of packet

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David Sidrane 2023-10-23 08:14:40 -07:00 committed by Petro Karashchenko
parent 962d46186d
commit 119bf660a4
1 changed files with 22 additions and 14 deletions
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36
arch/arm/src/imxrt/imxrt_lpi2c.c
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@ -1599,31 +1599,39 @@ static int imxrt_lpi2c_isr_process(struct imxrt_lpi2c_priv_s *priv)
LPI2C_MSR_FEF | LPI2C_MSR_EPF))); LPI2C_MSR_FEF | LPI2C_MSR_EPF)));
} }
/* Check for endof packet */ /* Check for endof packet or Stop */
if ((status & (LPI2C_MSR_EPF | LPI2C_MSR_SDF)) != 0) if ((status & (LPI2C_MSR_EPF | LPI2C_MSR_SDF)) != 0)
{ {
/* Reset either or both */
imxrt_lpi2c_putreg(priv, IMXRT_LPI2C_MSR_OFFSET, status & imxrt_lpi2c_putreg(priv, IMXRT_LPI2C_MSR_OFFSET, status &
(LPI2C_MSR_EPF | LPI2C_MSR_SDF)); (LPI2C_MSR_EPF | LPI2C_MSR_SDF));
#ifndef CONFIG_I2C_POLLED /* Was it both End of packet and Stop */
if (priv->intstate == INTSTATE_WAITING)
if ((status & (LPI2C_MSR_EPF | LPI2C_MSR_SDF)) ==
(LPI2C_MSR_EPF | LPI2C_MSR_SDF))
{ {
/* inform the thread that transfer is complete #ifndef CONFIG_I2C_POLLED
* and wake it up if (priv->intstate == INTSTATE_WAITING)
*/ {
/* inform the thread that transfer is complete
* and wake it up
*/
priv->intstate = INTSTATE_DONE; priv->intstate = INTSTATE_DONE;
imxrt_lpi2c_modifyreg(priv, IMXRT_LPI2C_MIER_OFFSET, imxrt_lpi2c_modifyreg(priv, IMXRT_LPI2C_MIER_OFFSET,
LPI2C_MIER_TDIE | LPI2C_MIER_RDIE | LPI2C_MIER_TDIE | LPI2C_MIER_RDIE |
LPI2C_MIER_NDIE | LPI2C_MIER_ALIE | LPI2C_MIER_NDIE | LPI2C_MIER_ALIE |
LPI2C_MIER_SDIE | LPI2C_MIER_EPIE, 0); LPI2C_MIER_SDIE | LPI2C_MIER_EPIE, 0);
nxsem_post(&priv->sem_isr); nxsem_post(&priv->sem_isr);
} }
#else #else
priv->intstate = INTSTATE_DONE; priv->intstate = INTSTATE_DONE;
#endif #endif
}
} }
return OK; return OK;