net: wwan: t7xx: Add sysfs attribute for device state machine

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Add support for userspace to get/set the device mode, device's state
machine changes between (unknown/ready/reset/fastboot).

Get the device state mode:
 - 'cat /sys/bus/pci/devices/${bdf}/t7xx_mode'

Set the device state mode:
 - reset(cold reset): 'echo reset > /sys/bus/pci/devices/${bdf}/t7xx_mode'
 - fastboot: 'echo fastboot_switching > /sys/bus/pci/devices/${bdf}/t7xx_mode'
Reload driver to get the new device state after setting operation.

Signed-off-by: Jinjian Song <jinjian.song@fibocom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

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This commit is contained in:

Jinjian Song 2024-02-05 18:22:28 +08:00 • committed by David S. Miller

parent e3caf18410

commit 409c38d4f1

6 changed files with 145 additions and 6 deletions

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28

Documentation/networking/device_drivers/wwan/t7xx.rst

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6

drivers/net/wwan/t7xx/t7xx_modem_ops.c

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1

drivers/net/wwan/t7xx/t7xx_modem_ops.h

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101

drivers/net/wwan/t7xx/t7xx_pci.c

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14

drivers/net/wwan/t7xx/t7xx_pci.h

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1

drivers/net/wwan/t7xx/t7xx_state_monitor.c

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