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Merge "hwkm: Empty RSP buffer before any command"

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qctecmdr 2020-10-08 08:33:23 -07:00 • committed by Gerrit - the friendly Code Review server
commit 3896f5dd3f
1 changed files with 34 additions and 0 deletions
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34
drivers/soc/qcom/hwkm.c
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@ -143,6 +143,7 @@ static int qti_hwkm_master_transaction(struct hwkm_device *dev,
int i = 0;
int err = 0;
u32 val = 0;
uint32_t rsp_discard;
// Clear CMD FIFO
qti_hwkm_setb(dev, QTI_HWKM_MASTER_RG_BANK2_BANKN_CTL,
@ -177,6 +178,22 @@ static int qti_hwkm_master_transaction(struct hwkm_device *dev,
return -err;
}
if (qti_hwkm_testb(dev, QTI_HWKM_MASTER_RG_BANK2_BANKN_IRQ_STATUS,
RSP_FIFO_NOT_EMPTY, KM_MASTER)) {
while (qti_hwkm_get_reg_data(dev,
QTI_HWKM_MASTER_RG_BANK2_BANKN_STATUS,
RSP_FIFO_AVAILABLE_DATA, RSP_FIFO_AVAILABLE_DATA_MASK,
KM_MASTER) > 0) {
rsp_discard = qti_hwkm_readl(dev,
QTI_HWKM_MASTER_RG_BANK2_RSP_0, KM_MASTER);
}
// Clear RSP_FIFO_NOT_EMPTY status bit
qti_hwkm_setb(dev, QTI_HWKM_MASTER_RG_BANK2_BANKN_IRQ_STATUS,
RSP_FIFO_NOT_EMPTY, KM_MASTER);
/* Write memory barrier */
wmb();
}
for (i = 0; i < cmd_words; i++) {
WAIT_UNTIL(qti_hwkm_get_reg_data(dev,
QTI_HWKM_MASTER_RG_BANK2_BANKN_STATUS,
@ -258,6 +275,7 @@ static int qti_hwkm_ice_transaction(struct hwkm_device *dev,
int i = 0;
int err = 0;
u32 val = 0;
uint32_t rsp_discard;
// Clear CMD FIFO
qti_hwkm_setb(dev, QTI_HWKM_ICE_RG_BANK0_BANKN_CTL,
@ -293,6 +311,22 @@ static int qti_hwkm_ice_transaction(struct hwkm_device *dev,
return err;
}
if (qti_hwkm_testb(dev, QTI_HWKM_ICE_RG_BANK0_BANKN_IRQ_STATUS,
RSP_FIFO_NOT_EMPTY, ICEMEM_SLAVE)) {
while (qti_hwkm_get_reg_data(dev,
QTI_HWKM_ICE_RG_BANK0_BANKN_STATUS,
RSP_FIFO_AVAILABLE_DATA, RSP_FIFO_AVAILABLE_DATA_MASK,
ICEMEM_SLAVE) > 0) {
rsp_discard = qti_hwkm_readl(dev,
QTI_HWKM_ICE_RG_BANK0_RSP_0, ICEMEM_SLAVE);
}
// Clear RSP_FIFO_NOT_EMPTY status bit
qti_hwkm_setb(dev, QTI_HWKM_ICE_RG_BANK0_BANKN_IRQ_STATUS,
RSP_FIFO_NOT_EMPTY, ICEMEM_SLAVE);
/* Write memory barrier */
wmb();
}
for (i = 0; i < cmd_words; i++) {
WAIT_UNTIL(qti_hwkm_get_reg_data(dev,
QTI_HWKM_ICE_RG_BANK0_BANKN_STATUS,