Re: [alsa-devel] [v3 06/13] ASoC: Intel: mrfld: add bytes control for modules

["Subhransu S. Prusty" <subhransu.s.prusty@intel.com>]

On Wed, Jul 30, 2014 at 03:50:12PM +0200, Takashi Iwai wrote:
> At Wed, 30 Jul 2014 18:32:23 +0530,
> Subhransu S. Prusty wrote:
> > 
> > From: Vinod Koul <vinod.koul@intel.com>
> > 
> > This patch add support for various modules like eq etc for mrfld DSP. All these
> > modules will be exposed to usermode as bytes controls.
> > 
> > Signed-off-by: Vinod Koul <vinod.koul@intel.com>
> > Signed-off-by: Subhransu S. Prusty <subhransu.s.prusty@intel.com>
> > ---
> >  sound/soc/intel/sst-atom-controls.c | 176 ++++++++++++++++++++++++++++++++++++
> >  sound/soc/intel/sst-atom-controls.h | 130 ++++++++++++++++++++++++++
> >  2 files changed, 306 insertions(+)
> > 
> > diff --git a/sound/soc/intel/sst-atom-controls.c b/sound/soc/intel/sst-atom-controls.c
> > index 38731e3e5e95..9b878c17d10a 100644
> > --- a/sound/soc/intel/sst-atom-controls.c
> > +++ b/sound/soc/intel/sst-atom-controls.c
> > @@ -25,6 +25,180 @@
> >  #include "sst-mfld-platform.h"
> >  #include "sst-atom-controls.h"
> >  
> > +static inline void sst_fill_byte_control(char *param,
> > +					 u8 ipc_msg, u8 block,
> > +					 u8 task_id, u8 pipe_id,
> > +					 u16 len, void *cmd_data)
> > +{
> > +
> > +	struct snd_sst_bytes_v2 *byte_data = (struct snd_sst_bytes_v2 *)param;
> > +
> > +	byte_data->type = SST_CMD_BYTES_SET;
> > +	byte_data->ipc_msg = ipc_msg;
> > +	byte_data->block = block;
> > +	byte_data->task_id = task_id;
> > +	byte_data->pipe_id = pipe_id;
> > +
> > +	if (len > SST_MAX_BIN_BYTES - sizeof(*byte_data)) {
> > +		pr_err("%s: command length too big (%u)", __func__, len);
> > +		len = SST_MAX_BIN_BYTES - sizeof(*byte_data);
> > +		WARN_ON(1); /* this happens only if code is wrong */
> > +	}
> 
> Better to use simply WARN() for the condition and the message.
Ok

> 
> 
> > +static void sst_send_algo_cmd(struct sst_data *drv,
> > +			      struct sst_algo_control *bc)
> > +{
> > +	int len;
> > +	struct sst_cmd_set_params *cmd;
> > +
> > +	if (bc->params == NULL)
> > +		return;
> > +
> > +	/* bc->max includes sizeof algos + length field */
> > +	len = sizeof(cmd->dst) + sizeof(cmd->command_id) + bc->max;
> > +
> > +	cmd = kzalloc(len, GFP_KERNEL);
> > +	if (cmd == NULL) {
> > +		pr_err("Failed to send cmd, kzalloc failed\n");
> 
> Superfluous error message (in other places, too).
Sure will remove these.
> 
> > +static int sst_algo_control_set(struct snd_kcontrol *kcontrol,
> > +				struct snd_ctl_elem_value *ucontrol)
> > +{
> > +	struct snd_soc_platform *platform =  snd_soc_kcontrol_platform(kcontrol);
> > +	struct sst_data *drv = snd_soc_platform_get_drvdata(platform);
> > +	struct sst_algo_control *bc = (void *)kcontrol->private_value;
> > +
> > +	pr_debug("in %s control_name=%s\n", __func__, kcontrol->id.name);
> > +	mutex_lock(&drv->lock);
> > +	switch (bc->type) {
> > +	case SST_ALGO_PARAMS:
> > +		if (bc->params)
> > +			memcpy(bc->params, ucontrol->value.bytes.data, bc->max);
> > +		break;
> > +	case SST_ALGO_BYPASS:
> > +		bc->bypass = !!ucontrol->value.integer.value[0];
> > +		break;
> > +	default:
> > +		mutex_unlock(&drv->lock);
> > +		pr_err("Invalid Input- algo type:%ld\n", ucontrol->value.integer.value[0]);
> 
> Shouldn't this be bc->type?
Yes
> 
> 
> Takashi

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