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This function is used to control the DSP Firmware for cs35l41,
and will be needed by the cs35l41 hda driver, when firmware
support is added.
Signed-off-by: Stefan Binding <sbinding@opensource.cirrus.com>
Signed-off-by: Vitaly Rodionov <vitalyr@opensource.cirrus.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220509214703.4482-7-vitalyr@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Both ASoC and HDA require to configure the GPIOs and Boost, so
create a single shared struct for hardware configuration.
Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Acked-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220413083728.10730-2-tanureal@opensource.cirrus.com
Signed-off-by: Takashi Iwai <tiwai@suse.de>
The cs35l41 supports a low power DSP memory retention mode. Add support
for entering this mode when then device is not in use.
Co-authored-by: David Rhodes <david.rhodes@cirrus.com>
Signed-off-by: David Rhodes <david.rhodes@cirrus.com>
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20220107160636.6555-3-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
To support CS35L41 in HDA systems the HDA driver
for CS35L41 would have to duplicate some functions
that already exist on ASoC driver
So instead of duplicate the code, use the new lib
source as a shared resource for both ASoC and HDA
Also, change the way CONFIG_SND_SOC_CS35L41 is
selected, as reported by Intel Kernel test robot,
it is possible to build SND_SOC_CS35L41_SPI/I2C
without the main driver, which would lead to build
failures.
Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Reported-by: kernel test robot <lkp@intel.com>
Link: https://lore.kernel.org/r/20211217115708.882525-2-tanureal@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Can't link I2C and SPI to the same binary, better
to move CS35L41 to 3 modules approach.
And instead of exposing cs35l41_reg, volatile_reg,
readable_reg and precious_reg arrays, move
cs35l41_regmap_i2c/spi to new module and expose it.
Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211125143501.7720-1-tanureal@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Higher speeds are only supported when PLL is enabled, but
the current driver doesn't enable PLL outside of stream
use cases, so better to set the lowest SPI speed accepted
by the entire device.
Move the current frequency set to the spi sub-driver so
the whole device can benefit from that speed.
spi-max-frequency property could be used, but ACPI systems don't
support it, so by setting it in the spi sub-driver probe
both Device Trees and ACPI systems are supported.
Signed-off-by: Lucas Tanure <tanureal@opensource.cirrus.com>
Reviewed-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20211123163149.1530535-2-tanureal@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Up to now cs35l41_remove() returns zero unconditionally. Make it
return void instead which makes it easier to see in the callers that
there is no error to handle.
Also the return value of i2c, platform and spi remove callbacks is
ignored anyway.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/20211020132416.30288-1-u.kleine-koenig@pengutronix.de
Signed-off-by: Mark Brown <broonie@kernel.org>
cs35l41 is often connected over I2C which is a very slow bus, as such
timings can be greatly improved combining writes where acceptable.
Update several points where the driver does multiple register writes
when a single one would suffice.
Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Link: https://lore.kernel.org/r/20210914141349.30218-3-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
