kernel/sound/soc/codecs/cs42l42.c, branch linux-6.2.y

ASoC: cs42l42: Fallback to headphones for type detect

2022-09-27T13:00:00Z

After tip sense detects a jack insertion, if automatic type detection, and manual type detection fails, then fall back to assume the jack connected belongs to headphones. Signed-off-by: Stefan Binding Link: https://lore.kernel.org/r/20220927121440.2506632-1-sbinding@opensource.cirrus.com Signed-off-by: Mark Brown

ASoC: cs42l42: Implement 'set_bclk_ratio'

2022-09-19T17:05:36Z

The driver wants to know the bit rate on the serial bus and takes that to be the value set by 'set_sysclk'. The 'set_bclk_ratio' op is a better fit for figuring out the clocking parameters of the serial bus, so implement that and give it precedence over the prior methods. Signed-off-by: Martin Povišer Link: https://lore.kernel.org/r/20220915094444.11434-11-povik+lin@cutebit.org Signed-off-by: Mark Brown

ASoC: cs42l83: Extend CS42L42 support to new part

2022-09-19T17:05:35Z

The CS42L83 part is a headphone jack codec found in recent Apple machines. It is a publicly undocumented part but as far as can be told it is identical to CS42L42 except for two points: * The chip ID is different. * Of those registers for which we have a default value in the existing CS42L42 kernel driver, one register (MCLK_CTL) differs in its reset value on CS42L83. To address those two points (and only those), add to the CS42L42 driver a separate CS42L83 front. Signed-off-by: Martin Povišer Link: https://lore.kernel.org/r/20220915094444.11434-10-povik+lin@cutebit.org Signed-off-by: Mark Brown

ASoC: cs42l42: Export regmap elements to core namespace

2022-09-19T17:05:34Z

Export the regmap callbacks for indicating readable/volatile registers, also the range structure, to the CS42L42 core namespace. This is in advance of reusing these bits in a CS42L83 driver frontend. Signed-off-by: Martin Povišer Link: https://lore.kernel.org/r/20220915094444.11434-9-povik+lin@cutebit.org Signed-off-by: Mark Brown

ASoC: cs42l42: Split I2C identity into separate module

2022-09-19T17:05:33Z

Split the I2C bus driver definition and probe()/remove() into a separate module so that a SoundWire build of CS42L42 support does not have a spurious dependency on I2C. Signed-off-by: Richard Fitzgerald Signed-off-by: Martin Povišer Link: https://lore.kernel.org/r/20220915094444.11434-8-povik+lin@cutebit.org Signed-off-by: Mark Brown

ASoC: cs42l42: Pass component and dai defs into common probe

2022-09-19T17:05:32Z

Pass pointers to snd_soc_component_driver and snd_soc_dai_driver objects into cs42l42_common_probe(). This is in preparation for adding SoundWire support. Signed-off-by: Richard Fitzgerald Signed-off-by: Martin Povišer Link: https://lore.kernel.org/r/20220915094444.11434-7-povik+lin@cutebit.org Signed-off-by: Mark Brown

ASoC: cs42l42: Split cs42l42_resume into two functions

2022-09-19T17:05:31Z

On SoundWire the system resume cannot restore registers until the host controller has re-enumerated the peripheral. This patch splits cs42l42_resume() into two functions, one to power up and the other to restore registers, ready for adding SoundWire support. Signed-off-by: Richard Fitzgerald Signed-off-by: Martin Povišer Link: https://lore.kernel.org/r/20220915094444.11434-6-povik+lin@cutebit.org Signed-off-by: Mark Brown

ASoC: cs42l42: Split probe() and remove() into stages

2022-09-19T17:05:30Z

To prepare for adding SoundWire the probe must be split into three parts: 1) The bus-specific probe 2) Common bus-agnostic probe steps 3) Initialization of the peripheral registers Step (3) must be separate because on SoundWire devices the probe must enable power supplies and release reset so that the peripheral can be enumerated by the bus, but it isn't possible to access registers until enumeration has completed. The call to devm_snd_soc_register_component() must be done at stage (2) so that it can EPROBE_DEFER if necessary. In SoundWire systems stage (3) is not a probe event so a deferral at this stage would not result in re-probing dependencies. A new init_done flag indicates that the chip has been identified and initialized. This is used to prevent cs42l42_remove(), cs42l42_suspend(), cs42l42_restore() and cs42l42_irq_thread() from attempting register accesses if the chip was not successfully initialized. Although this cannot happen on I2C, because the entire probe would fail, it is possible on SoundWire if probe succeeds but the cs42l42 is never enumerated. Signed-off-by: Richard Fitzgerald Signed-off-by: Martin Povišer Link: https://lore.kernel.org/r/20220915094444.11434-5-povik+lin@cutebit.org Signed-off-by: Mark Brown

ASoC: cs42l42: Use cs42l42->dev instead of &i2c_client->dev

2022-09-19T17:05:29Z

In preparation for splitting cs42l42_i2c_probe() into multiple functions replace use of &i2c_client->dev with cs42l42->dev. This reduces diff clutter in the patch that splits the function. Signed-off-by: Richard Fitzgerald Signed-off-by: Martin Povišer Link: https://lore.kernel.org/r/20220915094444.11434-4-povik+lin@cutebit.org Signed-off-by: Mark Brown

ASoC: cs42l42: Add bitclock frequency argument to cs42l42_pll_config()

2022-09-19T17:05:28Z

Clean up the handling of bitclock frequency by keeping all the logic in cs42l42_pcm_hw_params(), which then simply passes the frequency as an argument to cs42l42_pll_config(). The previous code had become clunky as a legacy of earlier versions of the clock handling. The logic was split across cs42l42_pcm_hw_params() and cs42l42_pll_config(), with the params-derived bclk stashed in struct cs42l42_private only to pass it to cs42l42_pll_config(). Signed-off-by: Richard Fitzgerald Signed-off-by: Martin Povišer Link: https://lore.kernel.org/r/20220915094444.11434-3-povik+lin@cutebit.org Signed-off-by: Mark Brown