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dcc_v2: Don't set the default value to sram when dcc is enabled

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If set the default value to sram when dcc is enabled, there will be
stuck issue for dcc dump.

Change-Id: I784993d6db41e1afed92ccc05bec0cf1987a3e04
Signed-off-by: Mao Jinlong <jinlmao@codeaurora.org>
This commit is contained in:
Mao Jinlong 2019-08-27 21:32:24 +08:00 • committed by Tingwei Zhang
commit 2bc8103c2b
1 changed files with 22 additions and 3 deletions
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25
drivers/soc/qcom/dcc_v2.c
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@ -589,13 +589,15 @@ static int dcc_valid_list(struct dcc_drvdata *drvdata, int curr_list)
return -EINVAL;
if (drvdata->enable[curr_list]) {
dev_err(drvdata->dev, "DCC is already enabled\n");
dev_err(drvdata->dev, "List %d is already enabled\n",
curr_list);
return -EINVAL;
}
lock_reg = dcc_readl(drvdata, DCC_LL_LOCK(curr_list));
if (lock_reg & 0x1) {
dev_err(drvdata->dev, "DCC is already enabled\n");
dev_err(drvdata->dev, "List %d is already locked\n",
curr_list);
return -EINVAL;
}
@ -603,6 +605,21 @@ static int dcc_valid_list(struct dcc_drvdata *drvdata, int curr_list)
return 0;
}
static bool is_dcc_enabled(struct dcc_drvdata *drvdata)
{
bool dcc_enable = false;
int list;
for (list = 0; list < DCC_MAX_LINK_LIST; list++) {
if (drvdata->enable[list]) {
dcc_enable = true;
break;
}
}
return dcc_enable;
}
static int dcc_enable(struct dcc_drvdata *drvdata)
{
int ret = 0;
@ -611,7 +628,9 @@ static int dcc_enable(struct dcc_drvdata *drvdata)
mutex_lock(&drvdata->mutex);
memset_io(drvdata->ram_base, 0xDE, drvdata->ram_size);
if (!is_dcc_enabled(drvdata)) {
memset_io(drvdata->ram_base, 0xDE, drvdata->ram_size);
}
for (list = 0; list < drvdata->nr_link_list; list++) {