soc: fsl: cpm1: qmc: Introduce qmc_version

Current code handles the CPM1 version of QMC.

In order to prepare the support for the QUICC Engine (QE) version of
QMC, introduce qmc_version to identify versions. This will enable the
code to make the distinction between several QMC implementations.

Signed-off-by: Herve Codina <herve.codina@bootlin.com>
Reviewed-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Link: https://lore.kernel.org/r/20240808071132.149251-32-herve.codina@bootlin.com
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>

diff --git a/drivers/soc/fsl/qe/qmc.c b/drivers/soc/fsl/qe/qmc.c
index 062477b7426ed48c8f260c031711347091bc3a3c..8ff7eaaa4c50d78630981827f8def18a50c858a7 100644 (file)
--- a/drivers/soc/fsl/qe/qmc.c
+++ b/drivers/soc/fsl/qe/qmc.c
@@ -215,7 +215,12 @@ struct qmc_chan {
        bool    is_rx_stopped;
 };
 
+enum qmc_version {
+       QMC_CPM1,
+};
+
 struct qmc_data {
+       enum qmc_version version;
        u32 tstate; /* Initial TSTATE value */
        u32 rstate; /* Initial RSTATE value */
        u32 zistate; /* Initial ZISTATE value */
@@ -1811,6 +1816,7 @@ static void qmc_remove(struct platform_device *pdev)
 }
 
 static const struct qmc_data qmc_data_cpm1 = {
+       .version = QMC_CPM1,
        .tstate = 0x30000000,
        .rstate = 0x31000000,
        .zistate = 0x00000100,