linux-kernel - [PATCH v2 07/17] soc: fsl: cpm1: qmc: Introduce available timeslots masks

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Message-ID: <20231205152116.122512-8-herve.codina@bootlin.com>
Date:   Tue,  5 Dec 2023 16:21:04 +0100
From:   Herve Codina <herve.codina@...tlin.com>
To:     Herve Codina <herve.codina@...tlin.com>,
        Qiang Zhao <qiang.zhao@....com>, Li Yang <leoyang.li@....com>,
        Jakub Kicinski <kuba@...nel.org>,
        Shengjiu Wang <shengjiu.wang@...il.com>,
        Xiubo Li <Xiubo.Lee@...il.com>,
        Fabio Estevam <festevam@...il.com>,
        Nicolin Chen <nicoleotsuka@...il.com>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>,
        Jaroslav Kysela <perex@...ex.cz>,
        Takashi Iwai <tiwai@...e.com>,
        Christophe Leroy <christophe.leroy@...roup.eu>
Cc:     Arnd Bergmann <arnd@...db.de>, linuxppc-dev@...ts.ozlabs.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        alsa-devel@...a-project.org,
        Thomas Petazzoni <thomas.petazzoni@...tlin.com>
Subject: [PATCH v2 07/17] soc: fsl: cpm1: qmc: Introduce available timeslots masks

Available timeslots masks define timeslots available for the related
channel. These timeslots are defined by the QMC binding.

Timeslots used are initialized to available timeslots but can be a
subset of available timeslots.
This prepares the dynamic timeslots management (ie. changing timeslots
at runtime).

Signed-off-by: Herve Codina <herve.codina@...tlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@...roup.eu>
---
 drivers/soc/fsl/qe/qmc.c | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/soc/fsl/qe/qmc.c b/drivers/soc/fsl/qe/qmc.c
index e716f13669a0..0413e25d4c67 100644
--- a/drivers/soc/fsl/qe/qmc.c
+++ b/drivers/soc/fsl/qe/qmc.c
@@ -177,7 +177,9 @@ struct qmc_chan {
 	struct qmc *qmc;
 	void __iomem *s_param;
 	enum qmc_mode mode;
+	u64	tx_ts_mask_avail;
 	u64	tx_ts_mask;
+	u64	rx_ts_mask_avail;
 	u64	rx_ts_mask;
 	bool is_reverse_data;
 
@@ -875,7 +877,8 @@ static int qmc_of_parse_chans(struct qmc *qmc, struct device_node *np)
 			of_node_put(chan_np);
 			return ret;
 		}
-		chan->tx_ts_mask = ts_mask;
+		chan->tx_ts_mask_avail = ts_mask;
+		chan->tx_ts_mask = chan->tx_ts_mask_avail;
 
 		ret = of_property_read_u64(chan_np, "fsl,rx-ts-mask", &ts_mask);
 		if (ret) {
@@ -884,7 +887,8 @@ static int qmc_of_parse_chans(struct qmc *qmc, struct device_node *np)
 			of_node_put(chan_np);
 			return ret;
 		}
-		chan->rx_ts_mask = ts_mask;
+		chan->rx_ts_mask_avail = ts_mask;
+		chan->rx_ts_mask = chan->rx_ts_mask_avail;
 
 		mode = "transparent";
 		ret = of_property_read_string(chan_np, "fsl,operational-mode", &mode);
-- 
2.43.0