linux.git/drivers/soundwire/amd_manager.c, branch v6.7 Linux kernel source tree soundwire: amd: Fix a check for errors in probe() 2023-07-13T05:39:07+00:00 Dan Carpenter dan.carpenter@linaro.org 2023-06-27T05:42:10+00:00 7891d0a5ce6f627132d3068ba925cf86f29008b1 This code has two problems: 1) The devm_ioremap() function returns NULL, not error pointers. 2) It's checking the wrong variable. ->mmio instead of ->acp_mmio. Fixes: d8f48fbdfd9a ("soundwire: amd: Add support for AMD Manager driver") Suggested-by: "Mukunda,Vijendar" <vijendar.mukunda@amd.com> Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org> Link: https://lore.kernel.org/r/9863b2bf-0de2-4bf8-8f09-fe24dc5c63ff@moroto.mountain Signed-off-by: Vinod Koul <vkoul@kernel.org> 
This code has two problems:
1) The devm_ioremap() function returns NULL, not error pointers.
2) It's checking the wrong variable.  ->mmio instead of ->acp_mmio.

Fixes: d8f48fbdfd9a ("soundwire: amd: Add support for AMD Manager driver")
Suggested-by: "Mukunda,Vijendar" <vijendar.mukunda@amd.com>
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Link: https://lore.kernel.org/r/9863b2bf-0de2-4bf8-8f09-fe24dc5c63ff@moroto.mountain
Signed-off-by: Vinod Koul <vkoul@kernel.org>
soundwire: amd: Improve error message in remove callback 2023-05-29T05:19:46+00:00 Uwe Kleine-König u.kleine-koenig@pengutronix.de 2023-05-18T20:08:23+00:00 1ec33e22b8bd10136c415c6c1b924bf32057354d Returning an error code in the remove callback yields to an error message remove callback returned a non-zero value. This will be ignored. After that the device is removed anyhow. Improve the error message to at least say what the actual problem is. While touching that code, convert the driver to the .remove_new() callback which returns no value with the same effect as returning zero in a .remove() callback. As the return value is ignored by the core the only effect of this patch is to improve the error message. (And the motivating effect is that there is one less driver using .remove().) Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de> Link: https://lore.kernel.org/r/20230518200823.249795-1-u.kleine-koenig@pengutronix.de Signed-off-by: Vinod Koul <vkoul@kernel.org> 
Returning an error code in the remove callback yields to an error
message

	remove callback returned a non-zero value. This will be ignored.

After that the device is removed anyhow. Improve the error message to at
least say what the actual problem is. While touching that code, convert
the driver to the .remove_new() callback which returns no value with the
same effect as returning zero in a .remove() callback.

As the return value is ignored by the core the only effect of this patch
is to improve the error message. (And the motivating effect is that
there is one less driver using .remove().)

Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20230518200823.249795-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Vinod Koul <vkoul@kernel.org>
soundwire: amd: add pm_prepare callback and pm ops support 2023-04-12T10:00:36+00:00 Vijendar Mukunda Vijendar.Mukunda@amd.com 2023-03-21T05:09:01+00:00 9cf1efc5ed2dde138acee54c0d00cf3664e2f465 Add pm_prepare callback and System level pm ops support for AMD SoundWire manager driver. Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Signed-off-by: Mastan Katragadda <Mastan.Katragadda@amd.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/lkml/20230310162554.699766-9-Vijendar.Mukunda@amd.com Link: https://lore.kernel.org/r/20230321050901.115439-9-Vijendar.Mukunda@amd.com Signed-off-by: Vinod Koul <vkoul@kernel.org> 
Add pm_prepare callback and System level pm ops support for
AMD SoundWire manager driver.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Signed-off-by: Mastan Katragadda <Mastan.Katragadda@amd.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/lkml/20230310162554.699766-9-Vijendar.Mukunda@amd.com
Link: https://lore.kernel.org/r/20230321050901.115439-9-Vijendar.Mukunda@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
soundwire: amd: handle SoundWire wake enable interrupt 2023-04-12T10:00:36+00:00 Vijendar Mukunda Vijendar.Mukunda@amd.com 2023-03-21T05:09:00+00:00 66c878838f37912ba295c41e749a25fc356341ea Add wake enable interrupt support for both the SoundWire manager instances. Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Signed-off-by: Mastan Katragadda <Mastan.Katragadda@amd.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/lkml/20230227154801.50319-8-Vijendar.Mukunda@amd.com Link: https://lore.kernel.org/r/20230321050901.115439-8-Vijendar.Mukunda@amd.com Signed-off-by: Vinod Koul <vkoul@kernel.org> 
Add wake enable interrupt support for both the SoundWire manager
instances.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Signed-off-by: Mastan Katragadda <Mastan.Katragadda@amd.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/lkml/20230227154801.50319-8-Vijendar.Mukunda@amd.com
Link: https://lore.kernel.org/r/20230321050901.115439-8-Vijendar.Mukunda@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
soundwire: amd: add runtime pm ops for AMD SoundWire manager driver 2023-04-12T10:00:36+00:00 Vijendar Mukunda Vijendar.Mukunda@amd.com 2023-03-21T05:08:59+00:00 81ff58ff71ad9dcddf5caffcf912cde6589d07bd Add support for runtime pm ops for AMD SoundWire manager driver. Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Signed-off-by: Mastan Katragadda <Mastan.Katragadda@amd.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/lkml/20230227154801.50319-7-Vijendar.Mukunda@amd.com Link: https://lore.kernel.org/r/20230321050901.115439-7-Vijendar.Mukunda@amd.com Signed-off-by: Vinod Koul <vkoul@kernel.org> 
Add support for runtime pm ops for AMD SoundWire manager driver.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Signed-off-by: Mastan Katragadda <Mastan.Katragadda@amd.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/lkml/20230227154801.50319-7-Vijendar.Mukunda@amd.com
Link: https://lore.kernel.org/r/20230321050901.115439-7-Vijendar.Mukunda@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
soundwire: amd: add SoundWire manager interrupt handling 2023-04-12T10:00:36+00:00 Vijendar Mukunda Vijendar.Mukunda@amd.com 2023-03-21T05:08:58+00:00 65f93e4096a07abd41acf0d240715bd8c7ef7eeb Add support for handling SoundWire manager interrupts. Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Signed-off-by: Mastan Katragadda <Mastan.Katragadda@amd.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/lkml/20230227154801.50319-6-Vijendar.Mukunda@amd.com Link: https://lore.kernel.org/r/20230321050901.115439-6-Vijendar.Mukunda@amd.com Signed-off-by: Vinod Koul <vkoul@kernel.org> 
Add support for handling SoundWire manager interrupts.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Signed-off-by: Mastan Katragadda <Mastan.Katragadda@amd.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/lkml/20230227154801.50319-6-Vijendar.Mukunda@amd.com
Link: https://lore.kernel.org/r/20230321050901.115439-6-Vijendar.Mukunda@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
soundwire: amd: register SoundWire manager dai ops 2023-04-12T10:00:36+00:00 Vijendar Mukunda Vijendar.Mukunda@amd.com 2023-03-21T05:08:56+00:00 2b13596f7c9c03b1653b21a440ce672c3d7e5233 Register dai ops for SoundWire manager instances. Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/lkml/20230227154801.50319-4-Vijendar.Mukunda@amd.com Link: https://lore.kernel.org/r/20230321050901.115439-4-Vijendar.Mukunda@amd.com Signed-off-by: Vinod Koul <vkoul@kernel.org> 
Register dai ops for SoundWire manager instances.

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/lkml/20230227154801.50319-4-Vijendar.Mukunda@amd.com
Link: https://lore.kernel.org/r/20230321050901.115439-4-Vijendar.Mukunda@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
soundwire: amd: Add support for AMD Manager driver 2023-04-12T10:00:35+00:00 Vijendar Mukunda Vijendar.Mukunda@amd.com 2023-03-21T05:08:55+00:00 d8f48fbdfd9af268e92b33462472559d2840228c AMD ACP(v6.x) IP block has two SoundWire manager devices. Add support for - Manager driver probe & remove sequence - Helper functions to enable/disable interrupts, Initialize sdw manager, enable sdw pads - Manager driver sdw_master_ops & port_ops callbacks Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com> Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com> Link: https://lore.kernel.org/lkml/20230310162554.699766-3-Vijendar.Mukunda@amd.com Link: https://lore.kernel.org/r/20230321050901.115439-3-Vijendar.Mukunda@amd.com Signed-off-by: Vinod Koul <vkoul@kernel.org> 
AMD ACP(v6.x) IP block has two SoundWire manager devices.
Add support for
  - Manager driver probe & remove sequence
  - Helper functions to enable/disable interrupts,
    Initialize sdw manager, enable sdw pads
  - Manager driver sdw_master_ops & port_ops callbacks

Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda@amd.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.intel.com>
Link: https://lore.kernel.org/lkml/20230310162554.699766-3-Vijendar.Mukunda@amd.com
Link: https://lore.kernel.org/r/20230321050901.115439-3-Vijendar.Mukunda@amd.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>