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Unverified Commit 599da084 authored by Jiada Wang's avatar Jiada Wang Committed by Mark Brown
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ASoC: rsnd: ssi: Check runtime channel number rather than hw_params 



The number of channel handled by SSI maybe differs from the one set
in hw_params, currently SSI checks hw_params's channel number,
and constrains to use same channel number, when it is being
used by multiple clients.

This patch corrects to check runtime channel number rather
than channel number set in hw_params.

Signed-off-by: default avatarJiada Wang <jiada_wang@mentor.com>
Signed-off-by: default avatarTimo Wischer <twischer@de.adit-jv.com>
[kuninori: adjust to upstreaming]
Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Tested-by: default avatarHiroyuki Yokoyama <hiroyuki.yokoyama.vx@renesas.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 0e289012

sound/soc/sh/rcar/ssi.c

+7 −20
Original line number Diff line number Diff line
@@ -307,6 +307,11 @@ static int rsnd_ssi_master_clk_start(struct rsnd_mod *mod, 
			return -EINVAL;

		}



		if (ssi->chan != chan) {

			dev_err(dev, "SSI parent/child should use same chan\n");

			return -EINVAL;

		}



		return 0;

	}
@@ -334,6 +339,7 @@ static int rsnd_ssi_master_clk_start(struct rsnd_mod *mod, 
			SCKD | SWSD | CKDV(idx);

	ssi->wsr = CONT;

	ssi->rate = rate;

	ssi->chan = chan;



	dev_dbg(dev, "%s[%d] outputs %u Hz\n",

		rsnd_mod_name(mod),
@@ -359,6 +365,7 @@ static void rsnd_ssi_master_clk_stop(struct rsnd_mod *mod, 


	ssi->cr_clk	= 0;

	ssi->rate	= 0;

	ssi->chan	= 0;



	rsnd_adg_ssi_clk_stop(mod);

}
@@ -511,9 +518,7 @@ static int rsnd_ssi_hw_params(struct rsnd_mod *mod, 
			      struct snd_pcm_substream *substream,

			      struct snd_pcm_hw_params *params)

{

	struct rsnd_ssi *ssi = rsnd_mod_to_ssi(mod);

	struct rsnd_dai *rdai = rsnd_io_to_rdai(io);

	int chan = params_channels(params);

	unsigned int fmt_width = snd_pcm_format_width(params_format(params));



	if (fmt_width > rdai->chan_width) {
@@ -524,24 +529,6 @@ static int rsnd_ssi_hw_params(struct rsnd_mod *mod, 
		return -EINVAL;

	}



	/*

	 * snd_pcm_ops::hw_params will be called *before*

	 * snd_soc_dai_ops::trigger. Thus, ssi->usrcnt is 0

	 * in 1st call.

	 */

	if (ssi->usrcnt) {

		/*

		 * Already working.

		 * It will happen if SSI has parent/child connection.

		 * it is error if child <-> parent SSI uses

		 * different channels.

		 */

		if (ssi->chan != chan)

			return -EIO;

	}



	ssi->chan = chan;



	return 0;

}