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Subject[PATCH 3/3] soc: rockchip: power-domain: export idle request
Date
We need to put the power status of HEVC IP into IDLE unless
we can't reset that IP or the SoC would crash down.
rockchip_pmu_idle_request(dev, true)---> enter idle
rockchip_pmu_idle_request(dev, false)---> exit idle

Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Randy Li <ayaka@soulik.info>
---
drivers/soc/rockchip/pm_domains.c | 23 +++++++++++++++++++++++
include/soc/rockchip/pm_domains.h | 18 ++++++++++++++++++
2 files changed, 41 insertions(+)
create mode 100644 include/soc/rockchip/pm_domains.h

diff --git a/drivers/soc/rockchip/pm_domains.c b/drivers/soc/rockchip/pm_domains.c
index 847c7c482b26..3e2e252cb64b 100644
--- a/drivers/soc/rockchip/pm_domains.c
+++ b/drivers/soc/rockchip/pm_domains.c
@@ -199,6 +199,29 @@ static int rockchip_pmu_set_idle_request(struct rockchip_pm_domain *pd,
return 0;
}

+int rockchip_pmu_idle_request(struct device *dev, bool idle)
+{
+ struct generic_pm_domain *genpd;
+ struct rockchip_pm_domain *pd;
+ int ret;
+
+ if (IS_ERR_OR_NULL(dev))
+ return -EINVAL;
+
+ if (IS_ERR_OR_NULL(dev->pm_domain))
+ return -EINVAL;
+
+ genpd = pd_to_genpd(dev->pm_domain);
+ pd = to_rockchip_pd(genpd);
+
+ mutex_lock(&pd->pmu->mutex);
+ ret = rockchip_pmu_set_idle_request(pd, idle);
+ mutex_unlock(&pd->pmu->mutex);
+
+ return ret;
+}
+EXPORT_SYMBOL(rockchip_pmu_idle_request);
+
static int rockchip_pmu_save_qos(struct rockchip_pm_domain *pd)
{
int i;
diff --git a/include/soc/rockchip/pm_domains.h b/include/soc/rockchip/pm_domains.h
new file mode 100644
index 000000000000..690db6118636
--- /dev/null
+++ b/include/soc/rockchip/pm_domains.h
@@ -0,0 +1,18 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __SOC_ROCKCHIP_PM_DOMAINS_H
+#define __SOC_ROCKCHIP_PM_DOMAINS_H
+
+#include <linux/errno.h>
+
+struct device;
+
+#ifdef CONFIG_ROCKCHIP_PM_DOMAINS
+int rockchip_pmu_idle_request(struct device *dev, bool idle);
+#else
+static inline int rockchip_pmu_idle_request(struct device *dev, bool idle)
+{
+ return -ENOTSUPP;
+}
+#endif
+
+#endif
--
2.20.1
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