Unverified Commit b622b677 authored by Chancel Liu's avatar Chancel Liu Committed by Mark Brown
Browse files

ASoC: fsl_xcvr: Add sample rate constraint 



Platforms like i.MX93/91 only have one audio PLL. Some sample rates are
not supported. If the PLL source is used for 8kHz series rates, then
11kHz series rates can't be supported. Use fsl_asoc_constrain_rates()
to constrain rates according to PLL sources. This constraint is merely
applicable to playback cases on SPDIF only platforms.

Signed-off-by: default avatarChancel Liu <chancel.liu@nxp.com>
Link: https://patch.msgid.link/20241126115440.3929061-4-chancel.liu@nxp.com


Acked-by: default avatarShengjiu Wang <shengjiu.wang@gmail.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent daf7a173

sound/soc/fsl/fsl_xcvr.c

+18 −2
Original line number Diff line number Diff line
@@ -19,6 +19,7 @@ 
#include "imx-pcm.h"



#define FSL_XCVR_CAPDS_SIZE	256

#define SPDIF_NUM_RATES		7



enum fsl_xcvr_pll_verison {

	PLL_MX8MP,
@@ -57,6 +58,8 @@ struct fsl_xcvr { 
	u8 cap_ds[FSL_XCVR_CAPDS_SIZE];

	struct work_struct work_rst;

	spinlock_t lock; /* Protect hw_reset and trigger */

	struct snd_pcm_hw_constraint_list spdif_constr_rates;

	u32 spdif_constr_rates_list[SPDIF_NUM_RATES];

};



static const struct fsl_xcvr_pll_conf {
@@ -640,6 +643,10 @@ static int fsl_xcvr_startup(struct snd_pcm_substream *substream, 
	switch (xcvr->mode) {

	case FSL_XCVR_MODE_SPDIF:

	case FSL_XCVR_MODE_ARC:

		if (xcvr->soc_data->spdif_only && tx)

			ret = fsl_xcvr_constr(substream, &fsl_xcvr_spdif_channels_constr,

					      &xcvr->spdif_constr_rates);

		else

			ret = fsl_xcvr_constr(substream, &fsl_xcvr_spdif_channels_constr,

					      &fsl_xcvr_spdif_rates_constr);

		break;
@@ -1546,6 +1553,15 @@ static int fsl_xcvr_probe(struct platform_device *pdev) 
	fsl_asoc_get_pll_clocks(dev, &xcvr->pll8k_clk,

				&xcvr->pll11k_clk);



	if (xcvr->soc_data->spdif_only) {

		if (!(xcvr->pll8k_clk || xcvr->pll11k_clk))

			xcvr->pll8k_clk = xcvr->phy_clk;

		fsl_asoc_constrain_rates(&xcvr->spdif_constr_rates,

					 &fsl_xcvr_spdif_rates_constr,

					 xcvr->pll8k_clk, xcvr->pll11k_clk, NULL,

					 xcvr->spdif_constr_rates_list);

	}



	xcvr->ram_addr = devm_platform_ioremap_resource_byname(pdev, "ram");

	if (IS_ERR(xcvr->ram_addr))

		return PTR_ERR(xcvr->ram_addr);