mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
synced 2024-10-29 23:53:32 +00:00
0173f525b2
The MIPI DisCo device properties that are read by the driver from platform firmware, or hard-coded in the driver, should only be provided as sysfs entries when a driver probes successfully. However the device status and device number is updated even when there is no driver present, and hence can be updated when a Slave device is detected on the bus without being described in platform firmware and without any driver registered/probed. As suggested by GregKH, the attribute group for Slave status and device number is is added by default upon device registration. Credits to Vinod Koul for the status_show() function, shared in a separate patch and used as is here. The status table was modified to remove an unnecessary enum and status_show() is handled in a different group attribute than what was suggested by Vinod. Tested-by: Srinivas Kandgatla <srinivas.kandagatla@linaro.org> Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Co-developed-by: Vinod Koul <vkoul@kernel.org> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20200924194430.121058-3-pierre-louis.bossart@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
18 lines
530 B
C
18 lines
530 B
C
/* SPDX-License-Identifier: GPL-2.0-only */
|
|
/* Copyright(c) 2015-2020 Intel Corporation. */
|
|
|
|
#ifndef __SDW_SYSFS_LOCAL_H
|
|
#define __SDW_SYSFS_LOCAL_H
|
|
|
|
/*
|
|
* SDW sysfs APIs -
|
|
*/
|
|
|
|
/* basic attributes to report status of Slave (attachment, dev_num) */
|
|
extern const struct attribute_group *sdw_slave_status_attr_groups[];
|
|
|
|
/* additional device-managed properties reported after driver probe */
|
|
int sdw_slave_sysfs_init(struct sdw_slave *slave);
|
|
int sdw_slave_sysfs_dpn_init(struct sdw_slave *slave);
|
|
|
|
#endif /* __SDW_SYSFS_LOCAL_H */
|