From: Markus Mayer <mmayer@xxxxxxxxxxxx>
In order to check whether or not the DCPU is running, we introduce
a function called is_dcpu_enabled().
Signed-off-by: Markus Mayer <mmayer@xxxxxxxxxxxx>
---
drivers/memory/brcmstb_dpfe.c | 21 +++++++++++++++------
1 file changed, 15 insertions(+), 6 deletions(-)
diff --git a/drivers/memory/brcmstb_dpfe.c b/drivers/memory/brcmstb_dpfe.c
index 21242c4..3516ee8 100644
--- a/drivers/memory/brcmstb_dpfe.c
+++ b/drivers/memory/brcmstb_dpfe.c
@@ -202,17 +202,26 @@ static const u32 dpfe_commands[DPFE_CMD_MAX][MSG_FIELD_MAX] = {
},
};
+static bool is_dcpu_enabled(void __iomem *regs)
+{
+ u32 val;
+
+ val = readl_relaxed(regs + REG_DCPU_RESET);
+
+ return !(val & DCPU_RESET_MASK);
+}
+
static void __disable_dcpu(void __iomem *regs)
{
u32 val;
- /* Check if DCPU is running */
+ if (!is_dcpu_enabled(regs))
+ return;
+
+ /* Put DCPU in reset if it's running. */
val = readl_relaxed(regs + REG_DCPU_RESET);
- if (!(val & DCPU_RESET_MASK)) {
- /* Put DCPU in reset */
- val |= (1 << DCPU_RESET_SHIFT);
- writel_relaxed(val, regs + REG_DCPU_RESET);
- }
+ val |= (1 << DCPU_RESET_SHIFT);
+ writel_relaxed(val, regs + REG_DCPU_RESET);
}
static void __enable_dcpu(void __iomem *regs)
--
2.7.4
--
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