driver wilc1000 for kernel 4.14.98

[DomenicoAcri]

Hi,
I'm using an NXP imx8m mini processor, and we connected the ATWILC1000 module on the SDIO interface.
I'm using the 4.14.98 kernel and when I load the driver it gives me the following output:

insmod wilc1000-sdio.ko
[35.225950] wilc1000_sdio: module is from the staging directory, the quality is unknown, you have been warned.
[35.246083] wilc1000_sdio mmc1: 0001: 1: Driver Initializing success

ifconfig wlan0 up
[54.458111] wilc1000_sdio mmc1: 0001: 1: chipid (c0802221)
[54.463459] wilc1000_sdio mmc1: 0001: 1: has_thrpt_enh3 = 0 ...
[54.470250] wilc1000_sdio mmc1: 0001: 1 wlan0: loading firmware atmel / wilc1002_firmware.bin
[54.478522] wilc1000_sdio mmc1: 0001: 1: Falling back to user helper
[54.487556] wilc1000_sdio mmc1: 0001: 1 wlan0: atmel / wilc1002_firmware.bin - firmware not available
[54.497183] wilc1000_sdio mmc1: 0001: 1 wlan0: WLAN initialization FAILED
[54.503881] wilc1000_sdio mmc1: 0001: 1 wlan0: Failed to set driver handler
[54.510771] wilc1000_sdio mmc1: 0001: 1 wlan0: Host cmd 24 failed
[54.516727] wilc1000_sdio mmc1: 0001: 1 wlan0: [Host Interface] undefined
SIOCSIFFLAGS: Input / output error

the firmware seems to be missing, where can I find it? Is this the correct driver to load?

Best Regards
Domenico Acri

[ajaykathat]

FW can be downloaded from https://github.com/linux4wilc/firmware repo. For wilc1000, use wilc1000_wifi_firmware.bin FW binary.

The link to 15.3.1 driver & FW is below:
FW-> https://github.com/linux4wilc/firmware/tree/wilc_linux_15_3_1
Driver -> https://github.com/linux4wilc/driver/tree/wilc_linux_15_3_1

[DomenicoAcri]

Hi,
thanks a lot for the answer.
I integrated the driver and firmware, but it gives this error:

insmod wilc-sdio.ko
[ 71.928370] Registering wifi device
[ 71.931969] Max scan ids= 10,Max scan IE len= 1000,Signal Type= 1,Interface Modes= 844
[ 71.940135] Initializing Locks ...
[ 71.945659] wifi_pm : 0
[ 71.948149] wilc_sdio mmc1:0001:1: failed to get Reset GPIO, try default
[ 71.955071] wifi_pm : 1
[ 71.957595] wilc_sdio mmc1:0001:1: failed to get Reset GPIO, try default
[ 71.971026] wilc_sdio mmc1:0001:1: Driver Initializing success

ifconfig wlan0 up
[ 87.193039] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_mac_open]MAC OPEN[ffff8000109fc000] wlan0
[ 87.201638] WILC POWER UP
[ 87.204264] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_init_host_int]Host[ffff8000109fc000][ffff8000109fdce8]
[ 87.213954] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_mac_open]*** re-init ***
[ 87.221038] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_wlan_init]Initializing WILC_Wlan
[ 87.228816] wilc_sdio mmc1:0001:1: SDIO speed: 25000000
[ 87.242136] wilc_sdio mmc1:0001:1: Unsupported chipid: 0
[ 87.247512] wilc_sdio mmc1:0001:1 wlan0: ERR [wilc_wlan_initialize:905] Initializing WILC_Wlan FAILED
[ 87.256764] wilc_sdio mmc1:0001:1 wlan0: ERR [wilc_mac_open:1029] Failed to initialize wilc
SIOCSIFFLAGS: Input/output error

This is my device tree:

/* WIFI */
&usdhc2 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_usdhc2>, <&pinctrl_atwilc1000>;
bus-width = <4>;
no-1-8-v;
max-frequency = <25000000>;
non-removable;
status = "okay";

wilc_sdio@0{
		compatible = "microchip,wilc1000", "microchip,wilc3000";
		reset-gpios = <&gpio1 10 GPIO_ACTIVE_HIGH>;
		chip_en-gpios = <&gpio1 3 GPIO_ACTIVE_HIGH>;
		irq-gpios = <&gpio1 8 GPIO_ACTIVE_HIGH>;
		status = "okay";
		reg = <0>;
		bus-width = <4>;
};

};

pinctrl_atwilc1000: atwilc1000grp {
fsl,pins = <
MX8MM_IOMUXC_GPIO1_IO03_GPIO1_IO3 0x19 /* WIFI_REGON /
MX8MM_IOMUXC_GPIO1_IO10_GPIO1_IO10 0x19 / WIFI_NRST /
MX8MM_IOMUXC_GPIO1_IO08_GPIO1_IO8 0x1C0 / WIFI_IRQN */
>;
};

Best Regards
Domenico Acri

[ajaykathat]

From the logs, it appears that the driver fails to get 'reset' GPIO using gpiod_get() API. During failure, it tries to load a default GPIO 'GPIO_NUM_RESET' which may be not correct in your codebase.

"wilc_sdio mmc1:0001:1: failed to get Reset GPIO, try default"

Please check and try by configuring with correct available GPIO for reset.

[DomenicoAcri]

Hi,
yes I suspected it.
So I went to change the default GPIOs in the wilc_wlan.h file as follows:

#define GPIO_NUM 8
#define GPIO_NUM_CHIP_EN 3
#define GPIO_NUM_RESET 10

this is the output:

insmod wilc-sdio.ko
[ 100.647908] Registering wifi device
[ 100.651410] Max scan ids= 10,Max scan IE len= 1000,Signal Type= 1,Interface Modes= 844
[ 100.659584] Initializing Locks ...
[ 100.665204] wifi_pm : 0
[ 100.667688] wilc_sdio mmc1:0001:1: failed to get Reset GPIO, try default
[ 100.674623] wifi_pm : 1
[ 100.677162] wilc_sdio mmc1:0001:1: succesfully got gpio_reset
[ 100.683088] wilc_sdio mmc1:0001:1: succesfully got gpio_chip_en
[ 100.695940] wilc_sdio mmc1:0001:1: Driver Initializing success
~# ifconfig wlan0 up
[ 108.771614] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_mac_open]MAC OPEN[ffff800010974000] wlan0
[ 108.780190] WILC POWER UP
[ 108.782815] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_init_host_int]Host[ffff800010974000][ffff800010975ce8]
[ 108.792510] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_mac_open]*** re-init ***
[ 108.799597] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_wlan_init]Initializing WILC_Wlan
[ 108.807379] wilc_sdio mmc1:0001:1: SDIO speed: 25000000
[ 108.820286] wilc_sdio mmc1:0001:1: wilc_sdio_cmd52..failed, err(-110)
[ 108.826747] wilc_sdio mmc1:0001:1: Fail cmd 52, enable csa...
[ 108.832563] wilc_sdio mmc1:0001:1 wlan0: ERR [wilc_wlan_initialize:905] Initializing WILC_Wlan FAILED
[ 108.841823] wilc_sdio mmc1:0001:1 wlan0: ERR [wilc_mac_open:1029] Failed to initialize wilc
SIOCSIFFLAGS: Input/output error

there still seems to be a problem.

Best Regards
Domenico Acri

[ajaykathat]

The logs look a bit strange for fetching reset GPIO because the next call for wilc_wlan_power() it was able to fetch reset from your Device tree. The below logs were missing for the next call to wilc_wlan_power().

[ 100.665204] wifi_pm : 0
[ 100.667688] wilc_sdio mmc1:0001:1: failed to get Reset GPIO, try default
[ 100.674623] wifi_pm : 1

So still I suspect the reset GPIO is not configured properly for the proper pwr sequence of WILC device.

Please try commenting out below code in wilc_wlan_power_on_sequence() and check the behavior after a hard reset?

int wilc_wlan_power_on_sequence(struct wilc *wilc)
{
#if 0
	int ret;

	ret = wilc_wlan_power(wilc, 0);
	if (ret)
		return ret;
	ret = wilc_wlan_power(wilc, 1);
	if (ret)
		return ret;
#endif
	return 0;
}

[DomenicoAcri]

Hi,
with the last modification this is the output:

~# insmod wilc-sdio.ko
[ 18.901985] Registering wifi device
[ 18.905506] Max scan ids= 10,Max scan IE len= 1000,Signal Type= 1,Interface Modes= 844
[ 18.913672] Initializing Locks ...
[ 18.918858] wilc_sdio mmc1:0001:1: Driver Initializing success

~# ifconfig wlan0 up
[ 25.608816] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_mac_open]MAC OPEN[ffff8000102cc000] wlan0
[ 25.617397] WILC POWER UP
[ 25.620059] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_init_host_int]Host[ffff8000102cc000][ffff8000102cdce8]
[ 25.629745] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_mac_open]*** re-init ***
[ 25.636826] wilc_sdio mmc1:0001:1 wlan0: INFO [wilc_wlan_init]Initializing WILC_Wlan
[ 25.644651] wilc_sdio mmc1:0001:1: SDIO speed: 25000000
[ 25.657920] wilc_sdio mmc1:0001:1: Unsupported chipid: 0
[ 25.663262] wilc_sdio mmc1:0001:1 wlan0: ERR [wilc_wlan_initialize:905] Initializing WILC_Wlan FAILED
[ 25.672512] wilc_sdio mmc1:0001:1 wlan0: ERR [wilc_mac_open:1029] Failed to initialize wilc
SIOCSIFFLAGS: Input/output error

Best Regards
Domenico Acri

[ajaykathat]

I suspect the issue could be related to power_sequence not triggered from host to WILC device. I hope you have tried by rebooting the host by removing power cable too.
If you still observe the issue, I suggest submitting a case in salesforce with host setup details used to connect WILC device.