Add a new routine to reset the ARM9 and brings it
out of reset. This is in preparation to add PIL
functionality in venus driver.
Signed-off-by: Vikash Garodia <vgaro...@codeaurora.org>
---
drivers/media/platform/qcom/venus/firmware.c | 26 ++++++++++++++++++++++++
drivers/media/platform/qcom/venus/firmware.h | 1 +
drivers/media/platform/qcom/venus/hfi_venus_io.h | 5 +++++
3 files changed, 32 insertions(+)
diff --git a/drivers/media/platform/qcom/venus/firmware.c
b/drivers/media/platform/qcom/venus/firmware.c
index c4a5778..8f25375 100644
--- a/drivers/media/platform/qcom/venus/firmware.c
+++ b/drivers/media/platform/qcom/venus/firmware.c
@@ -14,6 +14,7 @@
#include <linux/device.h>
#include <linux/firmware.h>
+#include <linux/delay.h>
#include <linux/kernel.h>
#include <linux/io.h>
#include <linux/of.h>
@@ -22,11 +23,36 @@
#include <linux/sizes.h>
#include <linux/soc/qcom/mdt_loader.h>
+#include "core.h"
#include "firmware.h"
+#include "hfi_venus_io.h"
#define VENUS_PAS_ID 9
#define VENUS_FW_MEM_SIZE (6 * SZ_1M)
+void venus_reset_hw(struct venus_core *core)
+{
+ void __iomem *reg_base = core->base;
+
+ writel(0, reg_base + WRAPPER_FW_START_ADDR);
+ writel(VENUS_FW_MEM_SIZE, reg_base + WRAPPER_FW_END_ADDR);
+ writel(0, reg_base + WRAPPER_CPA_START_ADDR);
+ writel(VENUS_FW_MEM_SIZE, reg_base + WRAPPER_CPA_END_ADDR);
+ writel(0x0, reg_base + WRAPPER_CPU_CGC_DIS);
+ writel(0x0, reg_base + WRAPPER_CPU_CLOCK_CONFIG);
+
+ /* Make sure all register writes are committed. */
+ mb();
+
+ /*
+ * Need to wait 10 cycles of internal clocks before bringing ARM9
+ * out of reset.
+ */
+ udelay(1);
+
+ /* Bring Arm9 out of reset */
+ writel_relaxed(0, reg_base + WRAPPER_A9SS_SW_RESET);
+}
int venus_boot(struct device *dev, const char *fwname)
{
const struct firmware *mdt;
diff --git a/drivers/media/platform/qcom/venus/firmware.h
b/drivers/media/platform/qcom/venus/firmware.h
index 428efb5..d56f5b2 100644
--- a/drivers/media/platform/qcom/venus/firmware.h
+++ b/drivers/media/platform/qcom/venus/firmware.h
@@ -18,5 +18,6 @@
int venus_boot(struct device *dev, const char *fwname);
int venus_shutdown(struct device *dev);
+void venus_reset_hw(struct venus_core *core);
#endif
diff --git a/drivers/media/platform/qcom/venus/hfi_venus_io.h
b/drivers/media/platform/qcom/venus/hfi_venus_io.h
index 76f4793..39afa5d 100644
--- a/drivers/media/platform/qcom/venus/hfi_venus_io.h
+++ b/drivers/media/platform/qcom/venus/hfi_venus_io.h
@@ -109,6 +109,11 @@
#define WRAPPER_CPU_CGC_DIS (WRAPPER_BASE + 0x2010)
#define WRAPPER_CPU_STATUS (WRAPPER_BASE + 0x2014)
#define WRAPPER_SW_RESET (WRAPPER_BASE + 0x3000)
+#define WRAPPER_CPA_START_ADDR (WRAPPER_BASE + 0x1020)
+#define WRAPPER_CPA_END_ADDR (WRAPPER_BASE + 0x1024)
+#define WRAPPER_FW_START_ADDR (WRAPPER_BASE + 0x1028)
+#define WRAPPER_FW_END_ADDR (WRAPPER_BASE + 0x102C)
+#define WRAPPER_A9SS_SW_RESET (WRAPPER_BASE + 0x3000)
/* Venus 4xx */
#define WRAPPER_VCODEC0_MMCC_POWER_STATUS (WRAPPER_BASE + 0x90)
--
The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum,
a Linux Foundation Collaborative Project
