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path: root/drivers/soundwire/sysfs_slave.c
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2024-10-03soundwire: Correct some typos in commentsShen Lichuan
Fixed some confusing spelling errors that were currently identified, the details are as follows: -in the code comments: drivers/soundwire/bus.c:115: enumuration==> enumeration drivers/soundwire/qcom.c:1176: wil ==> will drivers/soundwire/sysfs_slave.c:218: highligh ==> highlight Signed-off-by: Shen Lichuan <shenlichuan@vivo.com> Link: https://lore.kernel.org/r/20240925081134.10248-1-shenlichuan@vivo.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2024-03-28soundwire: sysfs: remove unneeded ATTRIBUTE_GROUPS() commentsGreg Kroah-Hartman
Now that we manually created our own attribute group list, the outdated ATTRIBUTE_GROUPS() comments can be removed as they are not needed at all. Cc: Vinod Koul <vkoul@kernel.org> Cc: Bard Liao <yung-chuan.liao@linux.intel.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Sanyog Kale <sanyog.r.kale@intel.com> Cc: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Tested-By: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Link: https://lore.kernel.org/r/2024013031-tranquil-matador-a554@gregkh Signed-off-by: Vinod Koul <vkoul@kernel.org>
2024-03-28soundwire: sysfs: remove sdw_slave_sysfs_init()Greg Kroah-Hartman
Now that sdw_slave_sysfs_init() only calls sdw_slave_sysfs_dpn_init(), just do that instead and remove sdw_slave_sysfs_init() to get it out of the way to save a bit of logic and code size. Cc: Vinod Koul <vkoul@kernel.org> Cc: Bard Liao <yung-chuan.liao@linux.intel.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Sanyog Kale <sanyog.r.kale@intel.com> Cc: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Tested-By: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Link: https://lore.kernel.org/r/2024013030-denatured-swaddling-b047@gregkh Signed-off-by: Vinod Koul <vkoul@kernel.org>
2024-03-28soundwire: sysfs: have the driver core handle the creation of the device groupsGreg Kroah-Hartman
The driver core supports the ability to handle the creation and removal of device-specific sysfs files in a race-free manner. Take advantage of that by converting this driver to use this by moving the sysfs attributes into a group and assigning the dev_groups pointer to it. Cc: Vinod Koul <vkoul@kernel.org> Cc: Bard Liao <yung-chuan.liao@linux.intel.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Sanyog Kale <sanyog.r.kale@intel.com> Cc: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Tested-By: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Link: https://lore.kernel.org/r/2024013030-worsening-rocket-a3cb@gregkh Signed-off-by: Vinod Koul <vkoul@kernel.org>
2024-03-28soundwire: sysfs: cleanup the logic for creating the dp0 sysfs attributesGreg Kroah-Hartman
There's no need to special-case the dp0 sysfs attributes, the is_visible() callback in the attribute group can handle that for us, so add that and add it to the attribute group list making the logic simpler overall. This is a step on the way to moving all of the sysfs attribute handling into the default driver core attribute group logic so that the soundwire core does not have to do any of it manually. Cc: Vinod Koul <vkoul@kernel.org> Cc: Bard Liao <yung-chuan.liao@linux.intel.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Sanyog Kale <sanyog.r.kale@intel.com> Cc: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Tested-By: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Link: https://lore.kernel.org/r/2024013029-budget-mulled-5b34@gregkh Signed-off-by: Vinod Koul <vkoul@kernel.org>
2024-03-28soundwire: sysfs: move sdw_slave_dev_attr_group into the existing list of groupsGreg Kroah-Hartman
The sysfs logic already creates a list of groups for the device, so add the sdw_slave_dev_attr_group group to that list instead of having to do a two-step process of adding a group list and then an individual group. This is a step on the way to moving all of the sysfs attribute handling into the default driver core attribute group logic so that the soundwire core does not have to do any of it manually. Cc: Vinod Koul <vkoul@kernel.org> Cc: Bard Liao <yung-chuan.liao@linux.intel.com> Cc: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Cc: Sanyog Kale <sanyog.r.kale@intel.com> Cc: alsa-devel@alsa-project.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Reviewed-by: Dan Williams <dan.j.williams@intel.com> Tested-By: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Link: https://lore.kernel.org/r/2024013029-afternoon-suitably-cb59@gregkh Signed-off-by: Vinod Koul <vkoul@kernel.org>
2021-01-19soundwire: sysfs: Constify static struct attribute_groupRikard Falkeborn
The only place sdw_slave_dev_attr_group is used is when its address is passed to devm_device_add_group() which takes a pointer to const struct attribute_group. Make it const to allow the compiler to put it in read-only memory. This makes all attribute_group structs in the file const. Done with the help of Coccinelle. Signed-off-by: Rikard Falkeborn <rikard.falkeborn@gmail.com> Link: https://lore.kernel.org/r/20210117221622.34315-1-rikard.falkeborn@gmail.com Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-09-28soundwire: sysfs: add slave status and device number before probePierre-Louis Bossart
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>
2020-05-20soundwire: fix trailing line in sysfs_slave.cVinod Koul
Commit bcac59029955 ("soundwire: add Slave sysfs support") added trailing line in file sysfs_slave.c, so remove it Fixes: bcac59029955 ("soundwire: add Slave sysfs support") Signed-off-by: Vinod Koul <vkoul@kernel.org>
2020-05-20soundwire: add Slave sysfs supportPierre-Louis Bossart
Expose MIPI DisCo Slave properties in sysfs. For Slave properties and Data Port 0, the attributes are managed with simple devm_ support. A Slave Device may have more than one Data Port (DPN), and each Data Port can be sink or source. The attributes are created dynamically using pre-canned macros, but still use devm_ with a name attribute group to avoid creating kobjects - as requested by GregKH. In the _show function, we use container_of() to retrieve port number and direction required to extract the information. Audio modes are not supported for now. Depending on the discussions the SoundWire Device Class, we may add it later as is or follow the new specification. Signed-off-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Signed-off-by: Bard Liao <yung-chuan.liao@linux.intel.com> Reviewed-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Link: https://lore.kernel.org/r/20200518203551.2053-4-yung-chuan.liao@linux.intel.com Signed-off-by: Vinod Koul <vkoul@kernel.org>