@@ -121,7 +121,6 @@ struct vpu_mbox {
enum vpu_core_state {
VPU_CORE_DEINIT = 0,
VPU_CORE_ACTIVE,
- VPU_CORE_SNAPSHOT,
VPU_CORE_HANG
};
@@ -89,7 +89,7 @@ static int vpu_core_boot_done(struct vpu_core *core)
core->supported_instance_count = min(core->supported_instance_count, count);
}
core->fw_version = fw_version;
- core->state = VPU_CORE_ACTIVE;
+ vpu_core_set_state(core, VPU_CORE_ACTIVE);
return 0;
}
@@ -172,10 +172,26 @@ int vpu_alloc_dma(struct vpu_core *core, struct vpu_buffer *buf)
return __vpu_alloc_dma(core->dev, buf);
}
-static void vpu_core_check_hang(struct vpu_core *core)
+void vpu_core_set_state(struct vpu_core *core, enum vpu_core_state state)
{
- if (core->hang_mask)
- core->state = VPU_CORE_HANG;
+ if (state != core->state)
+ vpu_trace(core->dev, "vpu core state change from %d to %d\n", core->state, state);
+ core->state = state;
+ if (core->state == VPU_CORE_DEINIT)
+ core->hang_mask = 0;
+}
+
+static void vpu_core_update_state(struct vpu_core *core)
+{
+ if (!vpu_iface_get_power_state(core)) {
+ if (core->request_count)
+ vpu_core_set_state(core, VPU_CORE_HANG);
+ else
+ vpu_core_set_state(core, VPU_CORE_DEINIT);
+
+ } else if (core->state == VPU_CORE_ACTIVE && core->hang_mask) {
+ vpu_core_set_state(core, VPU_CORE_HANG);
+ }
}
static struct vpu_core *vpu_core_find_proper_by_type(struct vpu_dev *vpu, u32 type)
@@ -188,11 +204,13 @@ static struct vpu_core *vpu_core_find_proper_by_type(struct vpu_dev *vpu, u32 ty
dev_dbg(c->dev, "instance_mask = 0x%lx, state = %d\n", c->instance_mask, c->state);
if (c->type != type)
continue;
+ mutex_lock(&c->lock);
+ vpu_core_update_state(c);
+ mutex_unlock(&c->lock);
if (c->state == VPU_CORE_DEINIT) {
core = c;
break;
}
- vpu_core_check_hang(c);
if (c->state != VPU_CORE_ACTIVE)
continue;
if (c->request_count < request_count) {
@@ -409,6 +427,12 @@ int vpu_inst_register(struct vpu_inst *inst)
}
mutex_lock(&core->lock);
+ if (core->state != VPU_CORE_ACTIVE) {
+ dev_err(core->dev, "vpu core is not active, state = %d\n", core->state);
+ ret = -EINVAL;
+ goto exit;
+ }
+
if (inst->id >= 0 && inst->id < core->supported_instance_count)
goto exit;
@@ -450,7 +474,7 @@ int vpu_inst_unregister(struct vpu_inst *inst)
vpu_core_release_instance(core, inst->id);
inst->id = VPU_INST_NULL_ID;
}
- vpu_core_check_hang(core);
+ vpu_core_update_state(core);
if (core->state == VPU_CORE_HANG && !core->instance_mask) {
int err;
@@ -459,7 +483,7 @@ int vpu_inst_unregister(struct vpu_inst *inst)
err = vpu_core_sw_reset(core);
mutex_lock(&core->lock);
if (!err) {
- core->state = VPU_CORE_ACTIVE;
+ vpu_core_set_state(core, VPU_CORE_ACTIVE);
core->hang_mask = 0;
}
}
@@ -609,7 +633,7 @@ static int vpu_core_probe(struct platform_device *pdev)
mutex_init(&core->cmd_lock);
init_completion(&core->cmp);
init_waitqueue_head(&core->ack_wq);
- core->state = VPU_CORE_DEINIT;
+ vpu_core_set_state(core, VPU_CORE_DEINIT);
core->res = of_device_get_match_data(dev);
if (!core->res)
@@ -758,33 +782,18 @@ static int __maybe_unused vpu_core_resume(struct device *dev)
mutex_lock(&core->lock);
pm_runtime_resume_and_get(dev);
vpu_core_get_vpu(core);
- if (core->state != VPU_CORE_SNAPSHOT)
- goto exit;
- if (!vpu_iface_get_power_state(core)) {
- if (!list_empty(&core->instances)) {
+ if (core->request_count) {
+ if (!vpu_iface_get_power_state(core))
ret = vpu_core_boot(core, false);
- if (ret) {
- dev_err(core->dev, "%s boot fail\n", __func__);
- core->state = VPU_CORE_DEINIT;
- goto exit;
- }
- } else {
- core->state = VPU_CORE_DEINIT;
- }
- } else {
- if (!list_empty(&core->instances)) {
+ else
ret = vpu_core_sw_reset(core);
- if (ret) {
- dev_err(core->dev, "%s sw_reset fail\n", __func__);
- core->state = VPU_CORE_HANG;
- goto exit;
- }
+ if (ret) {
+ dev_err(core->dev, "resume fail\n");
+ vpu_core_set_state(core, VPU_CORE_HANG);
}
- core->state = VPU_CORE_ACTIVE;
}
-
-exit:
+ vpu_core_update_state(core);
pm_runtime_put_sync(dev);
mutex_unlock(&core->lock);
@@ -798,18 +807,11 @@ static int __maybe_unused vpu_core_suspend(struct device *dev)
int ret = 0;
mutex_lock(&core->lock);
- if (core->state == VPU_CORE_ACTIVE) {
- if (!list_empty(&core->instances)) {
- ret = vpu_core_snapshot(core);
- if (ret) {
- mutex_unlock(&core->lock);
- return ret;
- }
- }
-
- core->state = VPU_CORE_SNAPSHOT;
- }
+ if (core->request_count)
+ ret = vpu_core_snapshot(core);
mutex_unlock(&core->lock);
+ if (ret)
+ return ret;
vpu_core_cancel_work(core);
@@ -11,5 +11,6 @@ u32 csr_readl(struct vpu_core *core, u32 reg);
int vpu_alloc_dma(struct vpu_core *core, struct vpu_buffer *buf);
void vpu_free_dma(struct vpu_buffer *buf);
struct vpu_inst *vpu_core_find_instance(struct vpu_core *core, u32 index);
+void vpu_core_set_state(struct vpu_core *core, enum vpu_core_state state);
#endif
@@ -15,6 +15,7 @@
#include <linux/debugfs.h>
#include "vpu.h"
#include "vpu_defs.h"
+#include "vpu_core.h"
#include "vpu_helpers.h"
#include "vpu_cmds.h"
#include "vpu_rpc.h"
@@ -233,6 +234,10 @@ static int vpu_dbg_core(struct seq_file *s, void *data)
if (seq_write(s, str, num))
return 0;
+ num = scnprintf(str, sizeof(str), "power %s\n",
+ vpu_iface_get_power_state(core) ? "on" : "off");
+ if (seq_write(s, str, num))
+ return 0;
num = scnprintf(str, sizeof(str), "state = %d\n", core->state);
if (seq_write(s, str, num))
return 0;
@@ -346,10 +351,10 @@ static ssize_t vpu_dbg_core_write(struct file *file,
pm_runtime_resume_and_get(core->dev);
mutex_lock(&core->lock);
- if (core->state != VPU_CORE_DEINIT && !core->instance_mask) {
+ if (vpu_iface_get_power_state(core) && !core->request_count) {
dev_info(core->dev, "reset\n");
if (!vpu_core_sw_reset(core)) {
- core->state = VPU_CORE_ACTIVE;
+ vpu_core_set_state(core, VPU_CORE_ACTIVE);
core->hang_mask = 0;
}
}
driver will enable the vpu core when request the first instance on the core. one vpu core can only support 8 streaming instances in the same time, the instance won't be added to core's list before streamon. so the actual instance count may be greater then the number in the core's list. in pm resume callback, driver will resume the core immediately if core's list is not empty. but this check is not accurate, if suspend during one instance is requested, but not streamon, then after suspend, the core won't be resume, and led to instance failure. use the request_count instead of the core's list to check whether is the core needed to resume immediately after suspend. And it can make the pm suspend and resume callback more clear. Fixes: 9f599f351e86 ("media: amphion: add vpu core driver") Signed-off-by: Ming Qian <ming.qian@nxp.com> --- drivers/media/platform/amphion/vpu.h | 1 - drivers/media/platform/amphion/vpu_core.c | 84 ++++++++++++----------- drivers/media/platform/amphion/vpu_core.h | 1 + drivers/media/platform/amphion/vpu_dbg.c | 9 ++- 4 files changed, 51 insertions(+), 44 deletions(-)