summaryrefslogtreecommitdiff
path: root/drivers/soc/imx
diff options
context:
space:
mode:
authorAnson Huang <Anson.Huang@nxp.com>2020-06-26 00:14:07 +0300
committerShawn Guo <shawnguo@kernel.org>2020-07-13 05:02:00 +0300
commita24015fa8b89e4605a9c6581d56b48d991e2b66b (patch)
tree5c74a2f0ccd9253bfe6b6f6669ac6a895961eecf /drivers/soc/imx
parentcfda066aa86227840faac7673bbdd9ae1c1d259d (diff)
downloadlinux-a24015fa8b89e4605a9c6581d56b48d991e2b66b.tar.xz
firmware: imx: Move i.MX SCU soc driver into imx firmware folder
The i.MX SCU soc driver depends on SCU firmware driver, so it has to use platform driver model for proper defer probe operation, since it has no device binding in DT file, a simple platform device is created together inside the platform driver. To make it more clean, we can just move the entire SCU soc driver into imx firmware folder and initialized by i.MX SCU firmware driver. Signed-off-by: Anson Huang <Anson.Huang@nxp.com> Signed-off-by: Shawn Guo <shawnguo@kernel.org>
Diffstat (limited to 'drivers/soc/imx')
-rw-r--r--drivers/soc/imx/Kconfig9
-rw-r--r--drivers/soc/imx/Makefile1
-rw-r--r--drivers/soc/imx/soc-imx-scu.c172
3 files changed, 0 insertions, 182 deletions
diff --git a/drivers/soc/imx/Kconfig b/drivers/soc/imx/Kconfig
index d515d2cc20ed..d49fa63ed9c9 100644
--- a/drivers/soc/imx/Kconfig
+++ b/drivers/soc/imx/Kconfig
@@ -8,15 +8,6 @@ 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
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 92448ca9a6f8..000000000000
--- a/drivers/soc/imx/soc-imx-scu.c
+++ /dev/null
@@ -1,172 +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 = devm_kasprintf(&pdev->dev, 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 = devm_kasprintf(&pdev->dev, GFP_KERNEL, "%d.%d",
- (val >> 4) & 0xf, val & 0xf);
- if (!soc_dev_attr->revision)
- return -ENOMEM;
-
- soc_dev_attr->serial_number = devm_kasprintf(&pdev->dev, GFP_KERNEL,
- "%016llX", uid);
- if (!soc_dev_attr->serial_number)
- return -ENOMEM;
-
- soc_dev = soc_device_register(soc_dev_attr);
- if (IS_ERR(soc_dev))
- return PTR_ERR(soc_dev);
-
- return 0;
-}
-
-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);