Merge tag 'zynqmp-soc-for-v5.2' of https://github.com/Xilinx/linux-xlnx into arm/drivers

arm64: zynqmp: SoC changes for v5.2

- Add support for ZynqMP fpga manager
- Defer some probes which depends on firmware driver to be ready
- Debugfs fix

* tag 'zynqmp-soc-for-v5.2' of https://github.com/Xilinx/linux-xlnx:
  fpga manager: Adding FPGA Manager support for Xilinx zynqmp
  dt-bindings: fpga: Add bindings for ZynqMP fpga driver
  firmware: xilinx: Add fpga API's
  drivers: Defer probe if firmware is not ready
  firmware: xilinx: fix debugfs write handler

Signed-off-by: Olof Johansson <olof@lixom.net>

2 files changed, 16 insertions, 12 deletions

diff --git a/drivers/soc/xilinx/zynqmp_pm_domains.c b/drivers/soc/xilinx/zynqmp_pm_domains.c
index 354d256e6e00..600f57cf0c2e 100644
--- a/drivers/soc/xilinx/zynqmp_pm_domains.c
+++ b/drivers/soc/xilinx/zynqmp_pm_domains.c
@@ -23,6 +23,8 @@
 /* Flag stating if PM nodes mapped to the PM domain has been requested */
 #define ZYNQMP_PM_DOMAIN_REQUESTED	BIT(0)
 
+static const struct zynqmp_eemi_ops *eemi_ops;
+
 /**
  * struct zynqmp_pm_domain - Wrapper around struct generic_pm_domain
  * @gpd:		Generic power domain
@@ -71,9 +73,8 @@ static int zynqmp_gpd_power_on(struct generic_pm_domain *domain)
 {
 	int ret;
 	struct zynqmp_pm_domain *pd;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
-	if (!eemi_ops || !eemi_ops->set_requirement)
+	if (!eemi_ops->set_requirement)
 		return -ENXIO;
 
 	pd = container_of(domain, struct zynqmp_pm_domain, gpd);
@@ -107,9 +108,8 @@ static int zynqmp_gpd_power_off(struct generic_pm_domain *domain)
 	struct zynqmp_pm_domain *pd;
 	u32 capabilities = 0;
 	bool may_wakeup;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
-	if (!eemi_ops || !eemi_ops->set_requirement)
+	if (!eemi_ops->set_requirement)
 		return -ENXIO;
 
 	pd = container_of(domain, struct zynqmp_pm_domain, gpd);
@@ -160,9 +160,8 @@ static int zynqmp_gpd_attach_dev(struct generic_pm_domain *domain,
 {
 	int ret;
 	struct zynqmp_pm_domain *pd;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
-	if (!eemi_ops || !eemi_ops->request_node)
+	if (!eemi_ops->request_node)
 		return -ENXIO;
 
 	pd = container_of(domain, struct zynqmp_pm_domain, gpd);
@@ -197,9 +196,8 @@ static void zynqmp_gpd_detach_dev(struct generic_pm_domain *domain,
 {
 	int ret;
 	struct zynqmp_pm_domain *pd;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
-	if (!eemi_ops || !eemi_ops->release_node)
+	if (!eemi_ops->release_node)
 		return;
 
 	pd = container_of(domain, struct zynqmp_pm_domain, gpd);
@@ -266,6 +264,10 @@ static int zynqmp_gpd_probe(struct platform_device *pdev)
 	struct zynqmp_pm_domain *pd;
 	struct device *dev = &pdev->dev;
 
+	eemi_ops = zynqmp_pm_get_eemi_ops();
+	if (IS_ERR(eemi_ops))
+		return PTR_ERR(eemi_ops);
+
 	pd = devm_kcalloc(dev, ZYNQMP_NUM_DOMAINS, sizeof(*pd), GFP_KERNEL);
 	if (!pd)
 		return -ENOMEM;
diff --git a/drivers/soc/xilinx/zynqmp_power.c b/drivers/soc/xilinx/zynqmp_power.c
index 771cb59b9d22..1b9d14411a15 100644
--- a/drivers/soc/xilinx/zynqmp_power.c
+++ b/drivers/soc/xilinx/zynqmp_power.c
@@ -31,6 +31,7 @@ static const char *const suspend_modes[] = {
 };
 
 static enum pm_suspend_mode suspend_mode = PM_SUSPEND_MODE_STD;
+static const struct zynqmp_eemi_ops *eemi_ops;
 
 enum pm_api_cb_id {
 	PM_INIT_SUSPEND_CB = 30,
@@ -92,9 +93,8 @@ static ssize_t suspend_mode_store(struct device *dev,
 				  const char *buf, size_t count)
 {
 	int md, ret = -EINVAL;
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
 
-	if (!eemi_ops || !eemi_ops->set_suspend_mode)
+	if (!eemi_ops->set_suspend_mode)
 		return ret;
 
 	for (md = PM_SUSPEND_MODE_FIRST; md < ARRAY_SIZE(suspend_modes); md++)
@@ -120,9 +120,11 @@ static int zynqmp_pm_probe(struct platform_device *pdev)
 	int ret, irq;
 	u32 pm_api_version;
 
-	const struct zynqmp_eemi_ops *eemi_ops = zynqmp_pm_get_eemi_ops();
+	eemi_ops = zynqmp_pm_get_eemi_ops();
+	if (IS_ERR(eemi_ops))
+		return PTR_ERR(eemi_ops);
 
-	if (!eemi_ops || !eemi_ops->get_api_version || !eemi_ops->init_finalize)
+	if (!eemi_ops->get_api_version || !eemi_ops->init_finalize)
 		return -ENXIO;
 
 	eemi_ops->init_finalize();