Merge tag 'soc-drivers-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc

Pull SoC driver updates from Arnd Bergmann:
 "The highlights for the driver support this time are

   - Qualcomm platforms gain support for the Qualcomm Secure Execution
     Environment firmware interface to access EFI variables on certain
     devices, and new features for multiple platform and firmware
     drivers.

   - Arm FF-A firmware support gains support for v1.1 specification
     features, in particular notification and memory transaction
     descriptor changes.

   - SCMI firmware support now support v3.2 features for clock and DVFS
     configuration and a new transport for Qualcomm platforms.

   - Minor cleanups and bugfixes are added to pretty much all the active
     platforms: qualcomm, broadcom, dove, ti-k3, rockchip, sifive,
     amlogic, atmel, tegra, aspeed, vexpress, mediatek, samsung and
     more.

     In particular, this contains portions of the treewide conversion to
     use __counted_by annotations and the device_get_match_data helper"

* tag 'soc-drivers-6.7' of git://git.kernel.org/pub/scm/linux/kernel/git/soc/soc: (156 commits)
  soc: qcom: pmic_glink_altmode: Print return value on error
  firmware: qcom: scm: remove unneeded 'extern' specifiers
  firmware: qcom: scm: add a missing forward declaration for struct device
  firmware: qcom: move Qualcomm code into its own directory
  soc: samsung: exynos-chipid: Convert to platform remove callback returning void
  soc: qcom: apr: Add __counted_by for struct apr_rx_buf and use struct_size()
  soc: qcom: pmic_glink: fix connector type to be DisplayPort
  soc: ti: k3-socinfo: Avoid overriding return value
  soc: ti: k3-socinfo: Fix typo in bitfield documentation
  soc: ti: knav_qmss_queue: Use device_get_match_data()
  firmware: ti_sci: Use device_get_match_data()
  firmware: qcom: qseecom: add missing include guards
  soc/pxa: ssp: Convert to platform remove callback returning void
  soc/mediatek: mtk-mmsys: Convert to platform remove callback returning void
  soc/mediatek: mtk-devapc: Convert to platform remove callback returning void
  soc/loongson: loongson2_guts: Convert to platform remove callback returning void
  soc/litex: litex_soc_ctrl: Convert to platform remove callback returning void
  soc/ixp4xx: ixp4xx-qmgr: Convert to platform remove callback returning void
  soc/ixp4xx: ixp4xx-npe: Convert to platform remove callback returning void
  soc/hisilicon: kunpeng_hccs: Convert to platform remove callback returning void
  ...

4 files changed, 342 insertions, 0 deletions

diff --git a/drivers/pmdomain/Makefile b/drivers/pmdomain/Makefile
index 666753676e5c0..f0326b27b30b2 100644
--- a/drivers/pmdomain/Makefile
+++ b/drivers/pmdomain/Makefile
@@ -2,6 +2,7 @@
 obj-y					+= actions/
 obj-y					+= amlogic/
 obj-y					+= apple/
+obj-y					+= arm/
 obj-y					+= bcm/
 obj-y					+= imx/
 obj-y					+= mediatek/
diff --git a/drivers/pmdomain/arm/Makefile b/drivers/pmdomain/arm/Makefile
new file mode 100644
index 0000000000000..cfcb1f6cdd900
--- /dev/null
+++ b/drivers/pmdomain/arm/Makefile
@@ -0,0 +1,4 @@
+# SPDX-License-Identifier: GPL-2.0-only
+
+obj-$(CONFIG_ARM_SCMI_PERF_DOMAIN) += scmi_perf_domain.o
+obj-$(CONFIG_ARM_SCMI_POWER_DOMAIN) += scmi_pm_domain.o
diff --git a/drivers/pmdomain/arm/scmi_perf_domain.c b/drivers/pmdomain/arm/scmi_perf_domain.c
new file mode 100644
index 0000000000000..bc3f78abb6dac
--- /dev/null
+++ b/drivers/pmdomain/arm/scmi_perf_domain.c
@@ -0,0 +1,184 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * SCMI performance domain support.
+ *
+ * Copyright (C) 2023 Linaro Ltd.
+ */
+
+#include <linux/err.h>
+#include <linux/device.h>
+#include <linux/module.h>
+#include <linux/pm_domain.h>
+#include <linux/pm_opp.h>
+#include <linux/scmi_protocol.h>
+#include <linux/slab.h>
+
+struct scmi_perf_domain {
+	struct generic_pm_domain genpd;
+	const struct scmi_perf_proto_ops *perf_ops;
+	const struct scmi_protocol_handle *ph;
+	const struct scmi_perf_domain_info *info;
+	u32 domain_id;
+};
+
+#define to_scmi_pd(pd) container_of(pd, struct scmi_perf_domain, genpd)
+
+static int
+scmi_pd_set_perf_state(struct generic_pm_domain *genpd, unsigned int state)
+{
+	struct scmi_perf_domain *pd = to_scmi_pd(genpd);
+	int ret;
+
+	if (!pd->info->set_perf)
+		return 0;
+
+	if (!state)
+		return -EINVAL;
+
+	ret = pd->perf_ops->level_set(pd->ph, pd->domain_id, state, true);
+	if (ret)
+		dev_warn(&genpd->dev, "Failed with %d when trying to set %d perf level",
+			 ret, state);
+
+	return ret;
+}
+
+static int
+scmi_pd_attach_dev(struct generic_pm_domain *genpd, struct device *dev)
+{
+	struct scmi_perf_domain *pd = to_scmi_pd(genpd);
+	int ret;
+
+	/*
+	 * Allow the device to be attached, but don't add the OPP table unless
+	 * the performance level can be changed.
+	 */
+	if (!pd->info->set_perf)
+		return 0;
+
+	ret = pd->perf_ops->device_opps_add(pd->ph, dev, pd->domain_id);
+	if (ret)
+		dev_warn(dev, "failed to add OPPs for the device\n");
+
+	return ret;
+}
+
+static void
+scmi_pd_detach_dev(struct generic_pm_domain *genpd, struct device *dev)
+{
+	struct scmi_perf_domain *pd = to_scmi_pd(genpd);
+
+	if (!pd->info->set_perf)
+		return;
+
+	dev_pm_opp_remove_all_dynamic(dev);
+}
+
+static int scmi_perf_domain_probe(struct scmi_device *sdev)
+{
+	struct device *dev = &sdev->dev;
+	const struct scmi_handle *handle = sdev->handle;
+	const struct scmi_perf_proto_ops *perf_ops;
+	struct scmi_protocol_handle *ph;
+	struct scmi_perf_domain *scmi_pd;
+	struct genpd_onecell_data *scmi_pd_data;
+	struct generic_pm_domain **domains;
+	int num_domains, i, ret = 0;
+
+	if (!handle)
+		return -ENODEV;
+
+	/* The OF node must specify us as a power-domain provider. */
+	if (!of_find_property(dev->of_node, "#power-domain-cells", NULL))
+		return 0;
+
+	perf_ops = handle->devm_protocol_get(sdev, SCMI_PROTOCOL_PERF, &ph);
+	if (IS_ERR(perf_ops))
+		return PTR_ERR(perf_ops);
+
+	num_domains = perf_ops->num_domains_get(ph);
+	if (num_domains < 0) {
+		dev_warn(dev, "Failed with %d when getting num perf domains\n",
+			 num_domains);
+		return num_domains;
+	} else if (!num_domains) {
+		return 0;
+	}
+
+	scmi_pd = devm_kcalloc(dev, num_domains, sizeof(*scmi_pd), GFP_KERNEL);
+	if (!scmi_pd)
+		return -ENOMEM;
+
+	scmi_pd_data = devm_kzalloc(dev, sizeof(*scmi_pd_data), GFP_KERNEL);
+	if (!scmi_pd_data)
+		return -ENOMEM;
+
+	domains = devm_kcalloc(dev, num_domains, sizeof(*domains), GFP_KERNEL);
+	if (!domains)
+		return -ENOMEM;
+
+	for (i = 0; i < num_domains; i++, scmi_pd++) {
+		scmi_pd->info = perf_ops->info_get(ph, i);
+
+		scmi_pd->domain_id = i;
+		scmi_pd->perf_ops = perf_ops;
+		scmi_pd->ph = ph;
+		scmi_pd->genpd.name = scmi_pd->info->name;
+		scmi_pd->genpd.flags = GENPD_FLAG_ALWAYS_ON |
+				       GENPD_FLAG_OPP_TABLE_FW;
+		scmi_pd->genpd.set_performance_state = scmi_pd_set_perf_state;
+		scmi_pd->genpd.attach_dev = scmi_pd_attach_dev;
+		scmi_pd->genpd.detach_dev = scmi_pd_detach_dev;
+
+		ret = pm_genpd_init(&scmi_pd->genpd, NULL, false);
+		if (ret)
+			goto err;
+
+		domains[i] = &scmi_pd->genpd;
+	}
+
+	scmi_pd_data->domains = domains;
+	scmi_pd_data->num_domains = num_domains;
+
+	ret = of_genpd_add_provider_onecell(dev->of_node, scmi_pd_data);
+	if (ret)
+		goto err;
+
+	dev_set_drvdata(dev, scmi_pd_data);
+	dev_info(dev, "Initialized %d performance domains", num_domains);
+	return 0;
+err:
+	for (i--; i >= 0; i--)
+		pm_genpd_remove(domains[i]);
+	return ret;
+}
+
+static void scmi_perf_domain_remove(struct scmi_device *sdev)
+{
+	struct device *dev = &sdev->dev;
+	struct genpd_onecell_data *scmi_pd_data = dev_get_drvdata(dev);
+	int i;
+
+	of_genpd_del_provider(dev->of_node);
+
+	for (i = 0; i < scmi_pd_data->num_domains; i++)
+		pm_genpd_remove(scmi_pd_data->domains[i]);
+}
+
+static const struct scmi_device_id scmi_id_table[] = {
+	{ SCMI_PROTOCOL_PERF, "perf" },
+	{ },
+};
+MODULE_DEVICE_TABLE(scmi, scmi_id_table);
+
+static struct scmi_driver scmi_perf_domain_driver = {
+	.name		= "scmi-perf-domain",
+	.probe		= scmi_perf_domain_probe,
+	.remove		= scmi_perf_domain_remove,
+	.id_table	= scmi_id_table,
+};
+module_scmi_driver(scmi_perf_domain_driver);
+
+MODULE_AUTHOR("Ulf Hansson <ulf.hansson@linaro.org>");
+MODULE_DESCRIPTION("ARM SCMI perf domain driver");
+MODULE_LICENSE("GPL v2");
diff --git a/drivers/pmdomain/arm/scmi_pm_domain.c b/drivers/pmdomain/arm/scmi_pm_domain.c
new file mode 100644
index 0000000000000..0e05a79de82d8
--- /dev/null
+++ b/drivers/pmdomain/arm/scmi_pm_domain.c
@@ -0,0 +1,153 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * SCMI Generic power domain support.
+ *
+ * Copyright (C) 2018-2021 ARM Ltd.
+ */
+
+#include <linux/err.h>
+#include <linux/io.h>
+#include <linux/module.h>
+#include <linux/pm_domain.h>
+#include <linux/scmi_protocol.h>
+
+static const struct scmi_power_proto_ops *power_ops;
+
+struct scmi_pm_domain {
+	struct generic_pm_domain genpd;
+	const struct scmi_protocol_handle *ph;
+	const char *name;
+	u32 domain;
+};
+
+#define to_scmi_pd(gpd) container_of(gpd, struct scmi_pm_domain, genpd)
+
+static int scmi_pd_power(struct generic_pm_domain *domain, bool power_on)
+{
+	int ret;
+	u32 state, ret_state;
+	struct scmi_pm_domain *pd = to_scmi_pd(domain);
+
+	if (power_on)
+		state = SCMI_POWER_STATE_GENERIC_ON;
+	else
+		state = SCMI_POWER_STATE_GENERIC_OFF;
+
+	ret = power_ops->state_set(pd->ph, pd->domain, state);
+	if (!ret)
+		ret = power_ops->state_get(pd->ph, pd->domain, &ret_state);
+	if (!ret && state != ret_state)
+		return -EIO;
+
+	return ret;
+}
+
+static int scmi_pd_power_on(struct generic_pm_domain *domain)
+{
+	return scmi_pd_power(domain, true);
+}
+
+static int scmi_pd_power_off(struct generic_pm_domain *domain)
+{
+	return scmi_pd_power(domain, false);
+}
+
+static int scmi_pm_domain_probe(struct scmi_device *sdev)
+{
+	int num_domains, i;
+	struct device *dev = &sdev->dev;
+	struct device_node *np = dev->of_node;
+	struct scmi_pm_domain *scmi_pd;
+	struct genpd_onecell_data *scmi_pd_data;
+	struct generic_pm_domain **domains;
+	const struct scmi_handle *handle = sdev->handle;
+	struct scmi_protocol_handle *ph;
+
+	if (!handle)
+		return -ENODEV;
+
+	power_ops = handle->devm_protocol_get(sdev, SCMI_PROTOCOL_POWER, &ph);
+	if (IS_ERR(power_ops))
+		return PTR_ERR(power_ops);
+
+	num_domains = power_ops->num_domains_get(ph);
+	if (num_domains < 0) {
+		dev_err(dev, "number of domains not found\n");
+		return num_domains;
+	}
+
+	scmi_pd = devm_kcalloc(dev, num_domains, sizeof(*scmi_pd), GFP_KERNEL);
+	if (!scmi_pd)
+		return -ENOMEM;
+
+	scmi_pd_data = devm_kzalloc(dev, sizeof(*scmi_pd_data), GFP_KERNEL);
+	if (!scmi_pd_data)
+		return -ENOMEM;
+
+	domains = devm_kcalloc(dev, num_domains, sizeof(*domains), GFP_KERNEL);
+	if (!domains)
+		return -ENOMEM;
+
+	for (i = 0; i < num_domains; i++, scmi_pd++) {
+		u32 state;
+
+		if (power_ops->state_get(ph, i, &state)) {
+			dev_warn(dev, "failed to get state for domain %d\n", i);
+			continue;
+		}
+
+		scmi_pd->domain = i;
+		scmi_pd->ph = ph;
+		scmi_pd->name = power_ops->name_get(ph, i);
+		scmi_pd->genpd.name = scmi_pd->name;
+		scmi_pd->genpd.power_off = scmi_pd_power_off;
+		scmi_pd->genpd.power_on = scmi_pd_power_on;
+
+		pm_genpd_init(&scmi_pd->genpd, NULL,
+			      state == SCMI_POWER_STATE_GENERIC_OFF);
+
+		domains[i] = &scmi_pd->genpd;
+	}
+
+	scmi_pd_data->domains = domains;
+	scmi_pd_data->num_domains = num_domains;
+
+	dev_set_drvdata(dev, scmi_pd_data);
+
+	return of_genpd_add_provider_onecell(np, scmi_pd_data);
+}
+
+static void scmi_pm_domain_remove(struct scmi_device *sdev)
+{
+	int i;
+	struct genpd_onecell_data *scmi_pd_data;
+	struct device *dev = &sdev->dev;
+	struct device_node *np = dev->of_node;
+
+	of_genpd_del_provider(np);
+
+	scmi_pd_data = dev_get_drvdata(dev);
+	for (i = 0; i < scmi_pd_data->num_domains; i++) {
+		if (!scmi_pd_data->domains[i])
+			continue;
+		pm_genpd_remove(scmi_pd_data->domains[i]);
+	}
+}
+
+static const struct scmi_device_id scmi_id_table[] = {
+	{ SCMI_PROTOCOL_POWER, "genpd" },
+	{ },
+};
+MODULE_DEVICE_TABLE(scmi, scmi_id_table);
+
+static struct scmi_driver scmi_power_domain_driver = {
+	.name = "scmi-power-domain",
+	.probe = scmi_pm_domain_probe,
+	.remove = scmi_pm_domain_remove,
+	.id_table = scmi_id_table,
+};
+module_scmi_driver(scmi_power_domain_driver);
+
+MODULE_AUTHOR("Sudeep Holla <sudeep.holla@arm.com>");
+MODULE_DESCRIPTION("ARM SCMI power domain driver");
+MODULE_LICENSE("GPL v2");