Merge tag 'imx-drivers-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux into arm/drivers

i.MX drivers change for 5.9:

- Update SCU irq code to call pm_system_wakeup() in general MU IRQ
  handler, so that system can be waked up when MU IRQ arrives.
- Move i.MX SCU soc driver into imx firmware folder to get it
  initialized from i.MX SCU firmware driver.
- Clean up soc-imx-scu driver a bit by using devm_kasprintf().
- Correct postfix setting for cm40 power domain in scu-pd driver.
- Add resource management support for IMX_SCU firmware driver.
- Add more cm4 resources to i.MX SCU power domain driver.
- Select ARM_GIC_V3 from SOC_IMX8M for being able to use GICv3 driver
  in AARCH32 mode Linux on AARCH64 hardware.

* tag 'imx-drivers-5.9' of git://git.kernel.org/pub/scm/linux/kernel/git/shawnguo/linux:
  soc: imx: select ARM_GIC_V3 for i.MX8M
  firmware: imx: Move i.MX SCU soc driver into imx firmware folder
  firmware: imx: scu-pd: add more cm4 resources
  firmware: imx: add resource management api
  firmware: imx: scu-pd: fix cm40 power domain
  soc: imx: scu: use devm_kasprintf
  firmware: imx: make sure MU irq can wake up system from suspend mode

Link: https://lore.kernel.org/r/20200720085536.24138-1-shawnguo@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>

3 files changed, 1 insertions, 197 deletions

diff --git a/drivers/soc/imx/Kconfig b/drivers/soc/imx/Kconfig
index d515d2cc20ed..a9370f4aacca 100644
--- a/drivers/soc/imx/Kconfig
+++ b/drivers/soc/imx/Kconfig
@@ -8,20 +8,12 @@ config IMX_GPCV2_PM_DOMAINS
 	select PM_GENERIC_DOMAINS
 	default y if SOC_IMX7D
 
-config IMX_SCU_SOC
-	bool "i.MX System Controller Unit SoC info support"
-	depends on IMX_SCU
-	select SOC_BUS
-	help
-	  If you say yes here you get support for the NXP i.MX System
-	  Controller Unit SoC info module, it will provide the SoC info
-	  like SoC family, ID and revision etc.
-
 config SOC_IMX8M
 	bool "i.MX8M SoC family support"
 	depends on ARCH_MXC || COMPILE_TEST
 	default ARCH_MXC && ARM64
 	select SOC_BUS
+	select ARM_GIC_V3 if ARCH_MXC
 	help
 	  If you say yes here you get support for the NXP i.MX8M family
 	  support, it will provide the SoC info like SoC family,
diff --git a/drivers/soc/imx/Makefile b/drivers/soc/imx/Makefile
index 446143241fe7..078dc918f4f3 100644
--- a/drivers/soc/imx/Makefile
+++ b/drivers/soc/imx/Makefile
@@ -5,4 +5,3 @@ endif
 obj-$(CONFIG_HAVE_IMX_GPC) += gpc.o
 obj-$(CONFIG_IMX_GPCV2_PM_DOMAINS) += gpcv2.o
 obj-$(CONFIG_SOC_IMX8M) += soc-imx8m.o
-obj-$(CONFIG_IMX_SCU_SOC) += soc-imx-scu.o
diff --git a/drivers/soc/imx/soc-imx-scu.c b/drivers/soc/imx/soc-imx-scu.c
deleted file mode 100644
index 20d37eaeb5f2..000000000000
--- a/drivers/soc/imx/soc-imx-scu.c
+++ /dev/null
@@ -1,187 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Copyright 2019 NXP.
- */
-
-#include <dt-bindings/firmware/imx/rsrc.h>
-#include <linux/firmware/imx/sci.h>
-#include <linux/slab.h>
-#include <linux/sys_soc.h>
-#include <linux/platform_device.h>
-#include <linux/of.h>
-
-#define IMX_SCU_SOC_DRIVER_NAME		"imx-scu-soc"
-
-static struct imx_sc_ipc *soc_ipc_handle;
-
-struct imx_sc_msg_misc_get_soc_id {
-	struct imx_sc_rpc_msg hdr;
-	union {
-		struct {
-			u32 control;
-			u16 resource;
-		} __packed req;
-		struct {
-			u32 id;
-		} resp;
-	} data;
-} __packed __aligned(4);
-
-struct imx_sc_msg_misc_get_soc_uid {
-	struct imx_sc_rpc_msg hdr;
-	u32 uid_low;
-	u32 uid_high;
-} __packed;
-
-static int imx_scu_soc_uid(u64 *soc_uid)
-{
-	struct imx_sc_msg_misc_get_soc_uid msg;
-	struct imx_sc_rpc_msg *hdr = &msg.hdr;
-	int ret;
-
-	hdr->ver = IMX_SC_RPC_VERSION;
-	hdr->svc = IMX_SC_RPC_SVC_MISC;
-	hdr->func = IMX_SC_MISC_FUNC_UNIQUE_ID;
-	hdr->size = 1;
-
-	ret = imx_scu_call_rpc(soc_ipc_handle, &msg, true);
-	if (ret) {
-		pr_err("%s: get soc uid failed, ret %d\n", __func__, ret);
-		return ret;
-	}
-
-	*soc_uid = msg.uid_high;
-	*soc_uid <<= 32;
-	*soc_uid |= msg.uid_low;
-
-	return 0;
-}
-
-static int imx_scu_soc_id(void)
-{
-	struct imx_sc_msg_misc_get_soc_id msg;
-	struct imx_sc_rpc_msg *hdr = &msg.hdr;
-	int ret;
-
-	hdr->ver = IMX_SC_RPC_VERSION;
-	hdr->svc = IMX_SC_RPC_SVC_MISC;
-	hdr->func = IMX_SC_MISC_FUNC_GET_CONTROL;
-	hdr->size = 3;
-
-	msg.data.req.control = IMX_SC_C_ID;
-	msg.data.req.resource = IMX_SC_R_SYSTEM;
-
-	ret = imx_scu_call_rpc(soc_ipc_handle, &msg, true);
-	if (ret) {
-		pr_err("%s: get soc info failed, ret %d\n", __func__, ret);
-		return ret;
-	}
-
-	return msg.data.resp.id;
-}
-
-static int imx_scu_soc_probe(struct platform_device *pdev)
-{
-	struct soc_device_attribute *soc_dev_attr;
-	struct soc_device *soc_dev;
-	int id, ret;
-	u64 uid = 0;
-	u32 val;
-
-	ret = imx_scu_get_handle(&soc_ipc_handle);
-	if (ret)
-		return ret;
-
-	soc_dev_attr = devm_kzalloc(&pdev->dev, sizeof(*soc_dev_attr),
-				    GFP_KERNEL);
-	if (!soc_dev_attr)
-		return -ENOMEM;
-
-	soc_dev_attr->family = "Freescale i.MX";
-
-	ret = of_property_read_string(of_root,
-				      "model",
-				      &soc_dev_attr->machine);
-	if (ret)
-		return ret;
-
-	id = imx_scu_soc_id();
-	if (id < 0)
-		return -EINVAL;
-
-	ret = imx_scu_soc_uid(&uid);
-	if (ret < 0)
-		return -EINVAL;
-
-	/* format soc_id value passed from SCU firmware */
-	val = id & 0x1f;
-	soc_dev_attr->soc_id = kasprintf(GFP_KERNEL, "0x%x", val);
-	if (!soc_dev_attr->soc_id)
-		return -ENOMEM;
-
-	/* format revision value passed from SCU firmware */
-	val = (id >> 5) & 0xf;
-	val = (((val >> 2) + 1) << 4) | (val & 0x3);
-	soc_dev_attr->revision = kasprintf(GFP_KERNEL,
-					   "%d.%d",
-					   (val >> 4) & 0xf,
-					   val & 0xf);
-	if (!soc_dev_attr->revision) {
-		ret = -ENOMEM;
-		goto free_soc_id;
-	}
-
-	soc_dev_attr->serial_number = kasprintf(GFP_KERNEL, "%016llX", uid);
-	if (!soc_dev_attr->serial_number) {
-		ret = -ENOMEM;
-		goto free_revision;
-	}
-
-	soc_dev = soc_device_register(soc_dev_attr);
-	if (IS_ERR(soc_dev)) {
-		ret = PTR_ERR(soc_dev);
-		goto free_serial_number;
-	}
-
-	return 0;
-
-free_serial_number:
-	kfree(soc_dev_attr->serial_number);
-free_revision:
-	kfree(soc_dev_attr->revision);
-free_soc_id:
-	kfree(soc_dev_attr->soc_id);
-	return ret;
-}
-
-static struct platform_driver imx_scu_soc_driver = {
-	.driver = {
-		.name = IMX_SCU_SOC_DRIVER_NAME,
-	},
-	.probe = imx_scu_soc_probe,
-};
-
-static int __init imx_scu_soc_init(void)
-{
-	struct platform_device *pdev;
-	struct device_node *np;
-	int ret;
-
-	np = of_find_compatible_node(NULL, NULL, "fsl,imx-scu");
-	if (!np)
-		return -ENODEV;
-
-	of_node_put(np);
-
-	ret = platform_driver_register(&imx_scu_soc_driver);
-	if (ret)
-		return ret;
-
-	pdev = platform_device_register_simple(IMX_SCU_SOC_DRIVER_NAME,
-					       -1, NULL, 0);
-	if (IS_ERR(pdev))
-		platform_driver_unregister(&imx_scu_soc_driver);
-
-	return PTR_ERR_OR_ZERO(pdev);
-}
-device_initcall(imx_scu_soc_init);