Set/get driver configurations¶

Path: /debug/btmrvl/config/

gpiogap=[n], hscfgcmd

These commands are used to configure the host sleep parameters::bit 8:0 – Gapbit 16:8 – GPIO

where GPIO is the pin number of GPIO used to wake up the host.It could be any valid GPIO pin# (e.g. 0-7) or 0xff (SDIO interfacewakeup will be used instead).

where Gap is the gap in milli seconds between wakeup signal andwakeup event, or 0xff for special host sleep setting.

Usage:

# Use SDIO interface to wake up the host and set GAP to 0x80:echo 0xff80 > /debug/btmrvl/config/gpiogapecho 1 > /debug/btmrvl/config/hscfgcmd# Use GPIO pin #3 to wake up the host and set GAP to 0xff:echo 0x03ff >  /debug/btmrvl/config/gpiogapecho 1 > /debug/btmrvl/config/hscfgcmd

psmode=[n], pscmd

These commands are used to enable/disable auto sleep mode

where the option is:

1       -- Enable auto sleep mode0       -- Disable auto sleep mode

Usage:

# Enable auto sleep modeecho 1 > /debug/btmrvl/config/psmodeecho 1 > /debug/btmrvl/config/pscmd# Disable auto sleep modeecho 0 > /debug/btmrvl/config/psmodeecho 1 > /debug/btmrvl/config/pscmd

hsmode=[n], hscmd

These commands are used to enable host sleep or wake up firmware

where the option is:

1       -- Enable host sleep0       -- Wake up firmware

Usage:

# Enable host sleepecho 1 > /debug/btmrvl/config/hsmodeecho 1 > /debug/btmrvl/config/hscmd# Wake up firmwareecho 0 > /debug/btmrvl/config/hsmodeecho 1 > /debug/btmrvl/config/hscmd

Get driver status¶

Path: /debug/btmrvl/status/

Usage:

cat /debug/btmrvl/status/<args>

where the args are:

curpsmode

This command displays current auto sleep status.

psstate

This command display the power save state.

hsstate

This command display the host sleep state.

txdnldrdy

This command displays the value of Tx download ready flag.

Issuing a raw hci command¶

Use hcitool to issue raw hci command, refer to hcitool manual

Usage:

Hcitool cmd <ogf> <ocf> [Parameters]

Interface Control Command:

hcitool cmd 0x3f 0x5b 0xf5 0x01 0x00    --Enable All interfacehcitool cmd 0x3f 0x5b 0xf5 0x01 0x01    --Enable Wlan interfacehcitool cmd 0x3f 0x5b 0xf5 0x01 0x02    --Enable BT interfacehcitool cmd 0x3f 0x5b 0xf5 0x00 0x00    --Disable All interfacehcitool cmd 0x3f 0x5b 0xf5 0x00 0x01    --Disable Wlan interfacehcitool cmd 0x3f 0x5b 0xf5 0x00 0x02    --Disable BT interface

SD8688 firmware¶

Images:

• /lib/firmware/sd8688_helper.bin
• /lib/firmware/sd8688.bin

The images can be downloaded from:

git.infradead.org/users/dwmw2/linux-firmware.git/libertas/