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@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20231205152116.122512-8-herve.codina@bootlin.com

diff --git a/drivers/soc/fsl/qe/qmc.c b/drivers/soc/fsl/qe/qmc.c
index e716f13669a0d971eb8b834eceaefad85eafe97b..0413e25d4c67a9e4e83298dc2d142393b5138f08 100644 (file)
--- 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);