Commit Graph

15 Commits

Author SHA1 Message Date
Stephen Warren 5e049fce36 ASoC: tegra: support new register layouts in Tegra124
Tegra124 introduces some small changes to the layout of some registers.
Modify the affected drivers to program those registers appropriately
based on which SoC they're running on.

Tegra124 also introduced some new modules on the AHUB configlink register
bus. These will require new entries in configlink_clocks[] in the AHUB
driver. However, supporting that change likely relies on switching Tegra
to the common reset framework, so I'll defer that change for now.

Based-on-work-by: Arun Shamanna Lakshmi <aruns@nvidia.com>
Based-on-work-by: Songhee Baek <sbaek@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@linaro.org>
2013-10-14 14:56:27 +01:00
Stephen Warren 110147c8c5 ASoC: tegra: always use clk_get() in utility code
Now that all of the Tegra device trees have been updated to represent
the required audio clocks, remove the compatibility code from the Tegra
ASoC utility code, and always use clk_get() rather than clk_get_sys().

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-05-14 08:45:11 +04:00
Stephen Warren a7fc5d256b ASoC: tegra: add Tegra114 support to tegra_asoc_utils.c
Tegra114 requires different PLL rates. Modify the code to know about
this.

On Tegra114 only for now, use regular clk_get() rather than clk_get_sys()
to retrieve clocks. This assumes that the clocks will be represented in
device tree. We can assure that from the start of any Tegra114 audio
support. For older chips, I'll add the required clocks properties to the
device trees this kernel cycle, and switch this code to only support the
"new_clocks" path next cycle.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-25 15:56:36 +00:00
Stephen Warren 69de6be70e ASoC: tegra: assume CONFIG_OF in tegra_asoc_utils_init
Tegra only supports, and always enables, device tree. Remove all runtime
checks for DT support from the driver.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2013-03-04 11:22:22 +08:00
Lucas Stach 919ad49c21 ASoC: tegra: add function to set ac97 rate
AC97 uses a fixed rate, unrelated to the sample rate. Add a function to
make the setup more trivial.

Signed-off-by: Lucas Stach <dev@lynxeye.de>
Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-12-24 15:59:10 +00:00
Prashant Gaikwad 65d2bdd343 ASoC: tegra: add clk_prepare/clk_unprepare
Use clk_prepare/clk_unprepare as required by the generic clk framework.

Signed-off-by: Prashant Gaikwad <pgaikwad@nvidia.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-06-12 10:32:56 -06:00
Stephen Warren 8127bf5529 ASoC: tegra: utils: Don't use of_have_populated_dt()
Recent list discussions concluded that drivers should not be calling
of_have_populated_dt(), and hence of_have_populated_dt() should not be
exported. Use a different mechanism to detect DT vs. non-DT boot.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-10 22:33:19 +01:00
Stephen Warren c2f6702d31 ASoC: tegra: utils: add support for Tegra30 devices
Tegra30 has some additional clocks that need to be manipulated, names
some clocks differently, runs PLLs at different base rates, etc. The
utility code needs to handle this.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-06 18:31:05 +01:00
Stephen Warren a9005b67b3 ASoC: tegra: set a sensible initial clock rate
Initialize the audio clock tree appropriately for some reasonable rate.
This makes sure the PLLs etc. are actually programmed to something
reasonable when the audio driver is loaded.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2012-04-06 18:25:16 +01:00
Paul Gortmaker da155d5b40 sound: Add module.h to the previously silent sound users
Lots of sound drivers were getting module.h via the implicit presence
of it in <linux/device.h> but we are going to clean that up.  So
fix up those users now.

Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
2011-10-31 19:31:21 -04:00
Stephen Warren 075413966a ASoC: Tegra: Don't return mclk_changed from utils_set_rate
Only the clock programming code needs to know whether the clocks changed,
and that is encapsulated within tegra_asoc_utils_set_rate(). The machine
driver's call to snd_soc_dai_set_sysclk(codec_dai, ...) is safe
irrespective of whether the clocks changed.

(Applying Mark's TrimSlice review comments to the existing driver)

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Liam Girdwood <lrg@ti.com>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-04-20 13:49:55 +01:00
Stephen Warren a3cd50deef ASoC: Tegra: Move utilities to separate module
The utilities will be required by every machine driver. Including the
utility object directly into every machine driver causes a build failure
if the modules are actually built into the kernel, since each will define
the symbols exported by the utility file. Solve this by moving the
utility object into a separate module.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-02-25 11:44:46 +00:00
Stephen Warren d64e57cef0 ASoC: Tegra: utils: Don't use global variables
Instead, have the machine driver provide storage for the utility data
somehow.

For Harmony in particular, store this within struct tegra_harmony, itself
referenced by snd_soc_card's drvdata.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-01-31 13:16:29 +00:00
Stephen Warren 422650e65a ASoC: tegra: s/IS_ERR_OR_NULL/IS_ERR/ for clk_get_sys
A recent discussion on linux-arm-kernel noted that the value returned by
clk_get_sys is an opaque token, and not strictly a pointer; it is
meaningful only to the clock API, clients should not dereference the value,
and the clock API must accept any non-IS_ERR value it returned.

Hence, only IS_ERR is appropriate to interpret the result, not
IS_ERR_OR_NULL.

I checked that clk_get_sys in both ASoC's for-next and Tegra's for-next
do behave as described; NULL is not returned in the case of error.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-01-13 14:18:03 +00:00
Stephen Warren a50a399b8b ASoC: tegra: Machine utility code
Many portions of Tegra ASoC machine drivers will be similar or identical.
To avoid cut/paste, this file will act as a repository for all that common
code. For now, it solely includes code to reprogram the audio PLL for
44.1KHz- vs. 48KHz-based sample rates.

Signed-Off-By: Stephen Warren <swarren@nvidia.com>
Acked-by: Liam Girdwood <lrg@slimlogic.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
2011-01-10 22:20:47 +00:00