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misc: cs40l20: Add extended-length playback support

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Allowed for the MSB of the cp_trigger_index sysfs control to indicate
that playback should be rendered until forcibly stopped.

Change-Id: Ic9c0111a7b4110d482174bfd475697bb2ac2c17a
Signed-off-by: Jeff LaBundy <jeff.labundy@cirrus.com>
Signed-off-by: Ravi Vembu <raviv@motorola.com>
This commit is contained in:
Jeff LaBundy 2018-01-10 01:11:34 -06:00 • committed by a7301c
commit 4993ca75e1
1 changed files with 7 additions and 4 deletions
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11
drivers/misc/cs40l20.c
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@ -100,7 +100,7 @@ static ssize_t cs40l20_cp_trigger_index_store(struct device *dev,
if (ret)
return -EINVAL;
if (index > (cs40l20->num_waves - 1))
if ((index & 0x7FFF) > (cs40l20->num_waves - 1))
return -EINVAL;
cs40l20->cp_trigger_index = index;
@ -319,13 +319,16 @@ static void cs40l20_vibe_start_worker(struct work_struct *work)
mutex_lock(&cs40l20->lock);
if (cs40l20->cp_trigger_index)
switch (cs40l20->cp_trigger_index) {
case 0x0001 ... 0x7FFF:
control_reg = cs40l20_dsp_reg(cs40l20, "TRIGGERINDEX");
else
break;
default:
control_reg = cs40l20_dsp_reg(cs40l20, "TRIGGER_MS");
}
ret = regmap_write(cs40l20->regmap,
control_reg, cs40l20->cp_trigger_index);
control_reg, (cs40l20->cp_trigger_index & 0x7FFF));
if (ret)
dev_err(cs40l20->dev, "Failed to start playback\n");