From: Chancel Liu <chancel.liu@nxp.com>
Date: Tue, 26 Nov 2024 11:54:39 +0000 (+0900)
Subject: ASoC: fsl_xcvr: Add sample rate constraint
X-Git-Tag: v6.14-rc1~111^2~7^2~52^2~1
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=b622b677d255b41cbfce20b66535723933a6b640;p=thirdparty%2Fkernel%2Flinux.git

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: Chancel Liu <chancel.liu@nxp.com>
Link: https://patch.msgid.link/20241126115440.3929061-4-chancel.liu@nxp.com
Acked-by: Shengjiu Wang <shengjiu.wang@gmail.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
---

diff --git a/sound/soc/fsl/fsl_xcvr.c b/sound/soc/fsl/fsl_xcvr.c
index 8150f877e1ae9..051add7930221 100644
--- a/sound/soc/fsl/fsl_xcvr.c
+++ b/sound/soc/fsl/fsl_xcvr.c
@@ -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 {
@@ -640,8 +643,12 @@ static int fsl_xcvr_startup(struct snd_pcm_substream *substream,
 	switch (xcvr->mode) {
 	case FSL_XCVR_MODE_SPDIF:
 	case FSL_XCVR_MODE_ARC:
-		ret = fsl_xcvr_constr(substream, &fsl_xcvr_spdif_channels_constr,
-				      &fsl_xcvr_spdif_rates_constr);
+		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;
 	case FSL_XCVR_MODE_EARC:
 		ret = fsl_xcvr_constr(substream, &fsl_xcvr_earc_channels_constr,
@@ -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);