[PATCH V1 1/4] ARM: imx: use device_initcall for imx_soc_device_init

peng.fan
2020-03-12T09:24:18Z

This is preparation to move imx_soc_device_init to drivers/soc/imx/

There is no reason to must put dt devices under /sys/devices/soc0,
they could also be under /sys/devices/platform, so we could
pass NULL as parent when calling of_platform_default_populate.

Following soc-imx8.c soc-imx-scu.c using device_initcall, need
to change return type to int type for imx_soc_device_init.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
---
arch/arm/mach-imx/common.h | 1 -
arch/arm/mach-imx/cpu.c | 9 +++++----
arch/arm/mach-imx/mach-imx6q.c | 8 +-------
arch/arm/mach-imx/mach-imx6sl.c | 8 +-------
arch/arm/mach-imx/mach-imx6sx.c | 8 +-------
arch/arm/mach-imx/mach-imx6ul.c | 8 +-------
arch/arm/mach-imx/mach-imx7d.c | 6 ------
arch/arm/mach-imx/mach-imx7ulp.c | 2 +-
8 files changed, 10 insertions(+), 40 deletions(-)

diff --git a/arch/arm/mach-imx/common.h b/arch/arm/mach-imx/common.h
index 5aa5796cff0e..72c3fcc32910 100644
--- a/arch/arm/mach-imx/common.h
+++ b/arch/arm/mach-imx/common.h
@@ -49,7 +49,6 @@ void imx_aips_allow_unprivileged_access(const char *compat);
int mxc_device_init(void);
void imx_set_soc_revision(unsigned int rev);
void imx_init_revision_from_anatop(void);
-struct device *imx_soc_device_init(void);
void imx6_enable_rbc(bool enable);
void imx_gpc_check_dt(void);
void imx_gpc_set_arm_power_in_lpm(bool power_off);
diff --git a/arch/arm/mach-imx/cpu.c b/arch/arm/mach-imx/cpu.c
index 06f8d64b65af..2df649a84697 100644
--- a/arch/arm/mach-imx/cpu.c
+++ b/arch/arm/mach-imx/cpu.c
@@ -83,7 +83,7 @@ void __init imx_aips_allow_unprivileged_access(
}
}

-struct device * __init imx_soc_device_init(void)
+static int __init imx_soc_device_init(void)
{
struct soc_device_attribute *soc_dev_attr;
const char *ocotp_compat = NULL;
@@ -97,7 +97,7 @@ struct device * __init imx_soc_device_init(void)

soc_dev_attr = kzalloc(sizeof(*soc_dev_attr), GFP_KERNEL);
if (!soc_dev_attr)
- return NULL;
+ return PTR_ERR(soc_dev_attr);

soc_dev_attr->family = "Freescale i.MX";

@@ -219,7 +219,7 @@ struct device * __init imx_soc_device_init(void)
if (IS_ERR(soc_dev))
goto free_serial_number;

- return soc_device_to_device(soc_dev);
+ return 0;

free_serial_number:
kfree(soc_dev_attr->serial_number);
@@ -227,5 +227,6 @@ struct device * __init imx_soc_device_init(void)
kfree(soc_dev_attr->revision);
free_soc:
kfree(soc_dev_attr);
- return NULL;
+ return -ENOMEM;
}
+device_initcall(imx_soc_device_init);
diff --git a/arch/arm/mach-imx/mach-imx6q.c b/arch/arm/mach-imx/mach-imx6q.c
index 284bce1112d2..85c084a716ab 100644
--- a/arch/arm/mach-imx/mach-imx6q.c
+++ b/arch/arm/mach-imx/mach-imx6q.c
@@ -245,21 +245,15 @@ static void __init imx6q_axi_init(void)

static void __init imx6q_init_machine(void)
{
- struct device *parent;
-
if (cpu_is_imx6q() && imx_get_soc_revision() == IMX_CHIP_REVISION_2_0)
imx_print_silicon_rev("i.MX6QP", IMX_CHIP_REVISION_1_0);
else
imx_print_silicon_rev(cpu_is_imx6dl() ? "i.MX6DL" : "i.MX6Q",
imx_get_soc_revision());

- parent = imx_soc_device_init();
- if (parent == NULL)
- pr_warn("failed to initialize soc device\n");
-
imx6q_enet_phy_init();

- of_platform_default_populate(NULL, NULL, parent);
+ of_platform_default_populate(NULL, NULL, NULL);

imx_anatop_init();
cpu_is_imx6q() ? imx6q_pm_init() : imx6dl_pm_init();
diff --git a/arch/arm/mach-imx/mach-imx6sl.c b/arch/arm/mach-imx/mach-imx6sl.c
index e27a6889cc56..f6e87363d605 100644
--- a/arch/arm/mach-imx/mach-imx6sl.c
+++ b/arch/arm/mach-imx/mach-imx6sl.c
@@ -45,13 +45,7 @@ static void __init imx6sl_init_late(void)

static void __init imx6sl_init_machine(void)
{
- struct device *parent;
-
- parent = imx_soc_device_init();
- if (parent == NULL)
- pr_warn("failed to initialize soc device\n");
-
- of_platform_default_populate(NULL, NULL, parent);
+ of_platform_default_populate(NULL, NULL, NULL);

if (cpu_is_imx6sl())
imx6sl_fec_init();
diff --git a/arch/arm/mach-imx/mach-imx6sx.c b/arch/arm/mach-imx/mach-imx6sx.c
index d5310bf307ff..781e2a94fdd7 100644
--- a/arch/arm/mach-imx/mach-imx6sx.c
+++ b/arch/arm/mach-imx/mach-imx6sx.c
@@ -63,13 +63,7 @@ static inline void imx6sx_enet_init(void)

static void __init imx6sx_init_machine(void)
{
- struct device *parent;
-
- parent = imx_soc_device_init();
- if (parent == NULL)
- pr_warn("failed to initialize soc device\n");
-
- of_platform_default_populate(NULL, NULL, parent);
+ of_platform_default_populate(NULL, NULL, NULL);

imx6sx_enet_init();
imx_anatop_init();
diff --git a/arch/arm/mach-imx/mach-imx6ul.c b/arch/arm/mach-imx/mach-imx6ul.c
index 3b0e16ccd59d..e018e716735f 100644
--- a/arch/arm/mach-imx/mach-imx6ul.c
+++ b/arch/arm/mach-imx/mach-imx6ul.c
@@ -55,13 +55,7 @@ static inline void imx6ul_enet_init(void)

static void __init imx6ul_init_machine(void)
{
- struct device *parent;
-
- parent = imx_soc_device_init();
- if (parent == NULL)
- pr_warn("failed to initialize soc device\n");
-
- of_platform_default_populate(NULL, NULL, parent);
+ of_platform_default_populate(NULL, NULL, NULL);
imx6ul_enet_init();
imx_anatop_init();
imx6ul_pm_init();
diff --git a/arch/arm/mach-imx/mach-imx7d.c b/arch/arm/mach-imx/mach-imx7d.c
index ebb27592a9f7..879c35929a13 100644
--- a/arch/arm/mach-imx/mach-imx7d.c
+++ b/arch/arm/mach-imx/mach-imx7d.c
@@ -78,12 +78,6 @@ static inline void imx7d_enet_init(void)

static void __init imx7d_init_machine(void)
{
- struct device *parent;
-
- parent = imx_soc_device_init();
- if (parent == NULL)
- pr_warn("failed to initialize soc device\n");
-
imx_anatop_init();
imx7d_enet_init();
}
diff --git a/arch/arm/mach-imx/mach-imx7ulp.c b/arch/arm/mach-imx/mach-imx7ulp.c
index 11ac71aaf965..128cf4c92aab 100644
--- a/arch/arm/mach-imx/mach-imx7ulp.c
+++ b/arch/arm/mach-imx/mach-imx7ulp.c
@@ -57,7 +57,7 @@ static void __init imx7ulp_init_machine(void)

mxc_set_cpu_type(MXC_CPU_IMX7ULP);
imx7ulp_set_revision();
- of_platform_default_populate(NULL, NULL, imx_soc_device_init());
+ of_platform_default_populate(NULL, NULL, NULL);
}

static const char *const imx7ulp_dt_compat[] __initconst = {
--
2.16.4