[PATCH v2 05/19] MIPS: SEAD3: Probe ethernet controller using DT

Paul Burton
2016-08-26T14:17:37Z

Probe the smsc911x ethernet controller using device tree rather than
platform code, reducing the amount of the latter.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
---

Changes in v2: None

arch/mips/boot/dts/mti/sead3.dts | 12 ++++++++++
arch/mips/include/asm/mips-boards/sead3int.h | 2 --
arch/mips/mti-sead3/sead3-dtshim.c | 15 ++++++++++++-
arch/mips/mti-sead3/sead3-platform.c | 33 ----------------------------
4 files changed, 26 insertions(+), 36 deletions(-)

diff --git a/arch/mips/boot/dts/mti/sead3.dts b/arch/mips/boot/dts/mti/sead3.dts
index 3f681c5..29ed194 100644
--- a/arch/mips/boot/dts/mti/sead3.dts
+++ b/arch/mips/boot/dts/mti/sead3.dts
@@ -87,4 +87,16 @@

no-loopback-test;
};
+
+ eth@1f010000 {
+ compatible = "smsc,lan9115";
+ reg = <0x1f010000 0x10000>;
+ reg-io-width = <4>;
+
+ interrupts = <0>; /* GIC 0 or CPU 6 */
+
+ phy-mode = "mii";
+ smsc,irq-push-pull;
+ smsc,save-mac-address;
+ };
};
diff --git a/arch/mips/include/asm/mips-boards/sead3int.h b/arch/mips/include/asm/mips-boards/sead3int.h
index 3a5e079..7fdb9d4 100644
--- a/arch/mips/include/asm/mips-boards/sead3int.h
+++ b/arch/mips/include/asm/mips-boards/sead3int.h
@@ -14,10 +14,8 @@

/* CPU interrupt offsets */
#define CPU_INT_EHCI 2
-#define CPU_INT_NET 6

/* GIC interrupt offsets */
-#define GIC_INT_NET GIC_SHARED_TO_HWIRQ(0)
#define GIC_INT_EHCI GIC_SHARED_TO_HWIRQ(5)

#endif /* !(_MIPS_SEAD3INT_H) */
diff --git a/arch/mips/mti-sead3/sead3-dtshim.c b/arch/mips/mti-sead3/sead3-dtshim.c
index b462f65..279d8d4 100644
--- a/arch/mips/mti-sead3/sead3-dtshim.c
+++ b/arch/mips/mti-sead3/sead3-dtshim.c
@@ -25,7 +25,8 @@ static unsigned char fdt_buf[16 << 10] __initdata;
static int remove_gic(void *fdt)
{
const unsigned int cpu_uart_int = 4;
- int gic_off, cpu_off, uart_off, err;
+ const unsigned int cpu_eth_int = 6;
+ int gic_off, cpu_off, uart_off, eth_off, err;
uint32_t cfg, cpu_phandle;

/* leave the GIC node intact if a GIC is present */
@@ -82,6 +83,18 @@ static int remove_gic(void *fdt)
return uart_off;
}

+ eth_off = fdt_node_offset_by_compatible(fdt, -1, "smsc,lan9115");
+ if (eth_off < 0) {
+ pr_err("unable to find ethernet DT node: %d\n", eth_off);
+ return eth_off;
+ }
+
+ err = fdt_setprop_u32(fdt, eth_off, "interrupts", cpu_eth_int);
+ if (err) {
+ pr_err("unable to set ethernet interrupts property: %d\n", err);
+ return err;
+ }
+
return 0;
}

diff --git a/arch/mips/mti-sead3/sead3-platform.c b/arch/mips/mti-sead3/sead3-platform.c
index 538a6f8..9f9e914 100644
--- a/arch/mips/mti-sead3/sead3-platform.c
+++ b/arch/mips/mti-sead3/sead3-platform.c
@@ -14,37 +14,9 @@
#include <linux/mtd/physmap.h>
#include <linux/of.h>
#include <linux/platform_device.h>
-#include <linux/smsc911x.h>

#include <asm/mips-boards/sead3int.h>

-static struct smsc911x_platform_config sead3_smsc911x_data = {
- .irq_polarity = SMSC911X_IRQ_POLARITY_ACTIVE_LOW,
- .irq_type = SMSC911X_IRQ_TYPE_PUSH_PULL,
- .flags = SMSC911X_USE_32BIT | SMSC911X_SAVE_MAC_ADDRESS,
- .phy_interface = PHY_INTERFACE_MODE_MII,
-};
-
-static struct resource sead3_net_resources[] = {
- {
- .start = 0x1f010000,
- .end = 0x1f01ffff,
- .flags = IORESOURCE_MEM
- }, {
- .flags = IORESOURCE_IRQ
- }
-};
-
-static struct platform_device sead3_net_device = {
- .name = "smsc911x",
- .id = 0,
- .dev = {
- .platform_data = &sead3_smsc911x_data,
- },
- .num_resources = ARRAY_SIZE(sead3_net_resources),
- .resource = sead3_net_resources
-};
-
static struct mtd_partition sead3_mtd_partitions[] = {
{
.name = "User FS",
@@ -175,7 +147,6 @@ static struct platform_device *sead3_platform_devices[] __initdata = {
&fled_device,
&sead3_led_device,
&ehci_device,
- &sead3_net_device,
};

static int __init sead3_platforms_device_init(void)
@@ -204,13 +175,9 @@ static int __init sead3_platforms_device_init(void)
if (gic_present) {
ehci_resources[1].start =
irq_create_mapping(irqd, GIC_INT_EHCI);
- sead3_net_resources[1].start =
- irq_create_mapping(irqd, GIC_INT_NET);
} else {
ehci_resources[1].start =
irq_create_mapping(irqd, CPU_INT_EHCI);
- sead3_net_resources[1].start =
- irq_create_mapping(irqd, CPU_INT_NET);
}

return platform_add_devices(sead3_platform_devices,
--
2.9.3