On Thu, Jan 18, 2024 at 07:41:54PM +0200, andy.shevchenko@xxxxxxxxx wrote:
> Fri, Aug 04, 2023 at 11:46:02AM +0100, Charles Keepax kirjoitti:
> > +static const unsigned int cs42l43_accdet_us[] = {
> > + 20, 100, 1000, 10000, 50000, 75000, 100000, 200000
>
> + comma.
>
> > +};
> > +
> > +static const unsigned int cs42l43_accdet_db_ms[] = {
> > + 0, 125, 250, 500, 750, 1000, 1250, 1500
>
> Ditto.
>
Can do.
> > + device_property_read_u32_array(cs42l43->dev, "cirrus,buttons-ohms",
> > + priv->buttons, ret);
>
> Strictly speaking this might fail, better to check the error code again.
>
Yeah should probably add an error check there.
> > + int timeout_ms = ((2 * priv->detect_us) / 1000) + 200;
>
> USEC_PER_MSEC ?
>
Can do.
> > + BUILD_BUG_ON(ARRAY_SIZE(cs42l43_jack_override_modes) !=
> > + ARRAY_SIZE(cs42l43_jack_text) - 1);
>
> Use static_assert() instead.
>
I am happy either way, but for my own education what is the
reason to prefer static_assert here, is it just to be able to use
== rather than !=? Or is there in general a preference to use
static_assert, there is no obvious since BUILD_BUG_ON is being
deprecated?
> > +static void cs42l43_mask_to_slots(struct cs42l43_codec *priv, unsigned int mask, int *slots)
> > +{
> > + int i;
> > +
> > + for (i = 0; i < CS42L43_ASP_MAX_CHANNELS; ++i) {
> > + int slot = ffs(mask) - 1;
> > +
> > + if (slot < 0)
> > + return;
> > +
> > + slots[i] = slot;
> > +
> > + mask &= ~(1 << slot);
> > + }
>
> for_each_set_bit() ?
>
> > + if (mask)
> > + dev_warn(priv->dev, "Too many channels in TDM mask\n");
> > +}
>
Can do.
> > +static int cs42l43_decim_get(struct snd_kcontrol *kcontrol,
> > + struct snd_ctl_elem_value *ucontrol)
> > +{
> > + struct snd_soc_component *component = snd_soc_kcontrol_component(kcontrol);
> > + struct cs42l43_codec *priv = snd_soc_component_get_drvdata(component);
> > + int ret;
> > +
> > + ret = cs42l43_shutter_get(priv, CS42L43_STATUS_MIC_SHUTTER_MUTE_SHIFT);
> > + if (ret < 0)
> > + return ret;
> > + else if (!ret)
>
> Reundant 'else'
>
> > + ucontrol->value.integer.value[0] = ret;
> > + else
> > + ret = cs42l43_dapm_get_volsw(kcontrol, ucontrol);
>
> and why not positive check?
>
> > + return ret;
>
> Or even simply as
>
> if (ret > 0)
> ret = cs42l43_dapm_get_volsw(kcontrol, ucontrol);
> else if (ret == 0)
> ucontrol->value.integer.value[0] = ret;
>
> return ret;
Yeah will update, that is definitely neater.
> > + while (freq > cs42l43_pll_configs[ARRAY_SIZE(cs42l43_pll_configs) - 1].freq) {
> > + div++;
> > + freq /= 2;
> > + }
>
> fls() / fls_long()?
Apologies but I might need a little bit more of a pointer here.
We need to scale freq down to under 3.072MHz and I am struggling
a little to see how to do that with fls.
> > + // Don't use devm as we need to get against the MFD device
>
> This is weird...
>
> > + priv->mclk = clk_get_optional(cs42l43->dev, "mclk");
> > + if (IS_ERR(priv->mclk)) {
> > + dev_err_probe(priv->dev, PTR_ERR(priv->mclk), "Failed to get mclk\n");
> > + goto err_pm;
> > + }
> > +
> > + ret = devm_snd_soc_register_component(priv->dev, &cs42l43_component_drv,
> > + cs42l43_dais, ARRAY_SIZE(cs42l43_dais));
> > + if (ret) {
> > + dev_err_probe(priv->dev, ret, "Failed to register component\n");
> > + goto err_clk;
> > + }
> > +
> > + pm_runtime_mark_last_busy(priv->dev);
> > + pm_runtime_put_autosuspend(priv->dev);
> > +
> > + return 0;
> > +
> > +err_clk:
> > + clk_put(priv->mclk);
> > +err_pm:
> > + pm_runtime_put_sync(priv->dev);
> > +
> > + return ret;
> > +}
> > +
> > +static int cs42l43_codec_remove(struct platform_device *pdev)
> > +{
> > + struct cs42l43_codec *priv = platform_get_drvdata(pdev);
> > +
> > + clk_put(priv->mclk);
>
> You have clocks put before anything else, and your remove order is broken now.
>
> To fix this (in case you may not used devm_clk_get() call), you should drop
> devm calls all way after the clk_get(). Do we have
> snd_soc_register_component()? If yes, use it to fix.
>
> I believe you never tested rmmod/modprobe in a loop.
>
Hmm... will need to think this through a little bit, so might take
a little longer on this one. But I guess this only becomes a problem
if you attempt to remove the driver whilst you are currently playing
audio, and I would expect the card tear down would stop the clock
running before we get here.
> > +static const struct dev_pm_ops cs42l43_codec_pm_ops = {
> > + SET_RUNTIME_PM_OPS(NULL, cs42l43_codec_runtime_resume, NULL)
> > +};
>
> Why not new PM macros?
>
Already been updated in another patch.
> > + .pm = &cs42l43_codec_pm_ops,
>
> pm_sleep_ptr()?
>
Can do.
> > +#include <linux/clk.h>
> > +#include <linux/device.h>
> > +#include <linux/regmap.h>
> > +#include <linux/soundwire/sdw.h>
> > +#include <linux/types.h>
> > +#include <sound/cs42l43.h>
> > +#include <sound/pcm.h>
> > +#include <sound/soc-jack.h>
>
> This block is messed up. Some headers can be replaced by forward declarations,
> some are missing... Please, follow IWYU principle.
>
> > +#ifndef CS42L43_ASOC_INT_H
> > +#define CS42L43_ASOC_INT_H
>
> Why not guarding other inclusions? It makes build slower!
>
Will shuffle these headers around as well.
Thanks,
Charles
