[PATCH v1 13/36] soc: fsl: cpm1: tsa: Introduce tsa_version

[Herve Codina]

Current code handles CPM1 version of TSA.

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

Signed-off-by: Herve Codina <herve.cod...@bootlin.com>
---
 drivers/soc/fsl/qe/tsa.c | 16 +++++++++++++++-
 1 file changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/soc/fsl/qe/tsa.c b/drivers/soc/fsl/qe/tsa.c
index 48a176cece86..3b7c9766e25c 100644
--- a/drivers/soc/fsl/qe/tsa.c
+++ b/drivers/soc/fsl/qe/tsa.c
@@ -114,12 +114,17 @@ struct tsa_tdm {
 #define TSA_TDMA       0
 #define TSA_TDMB       1
 
+enum tsa_version {
+       TSA_CPM1 = 1, /* Avoid 0 value */
+};
+
 struct tsa {
        struct device *dev;
        void __iomem *si_regs;
        void __iomem *si_ram;
        resource_size_t si_ram_sz;
        spinlock_t      lock; /* Lock for read/modify/write sequence */
+       enum tsa_version version;
        int tdms; /* TSA_TDMx ORed */
        struct tsa_tdm tdm[2]; /* TDMa and TDMb */
        struct tsa_serial {
@@ -685,6 +690,15 @@ static int tsa_probe(struct platform_device *pdev)
                return -ENOMEM;
 
        tsa->dev = &pdev->dev;
+       tsa->version = (enum tsa_version)of_device_get_match_data(&pdev->dev);
+       switch (tsa->version) {
+       case TSA_CPM1:
+               dev_info(tsa->dev, "CPM1 version\n");
+               break;
+       default:
+               dev_err(tsa->dev, "Unknown version (%d)\n", tsa->version);
+               return -EINVAL;
+       }
 
        for (i = 0; i < ARRAY_SIZE(tsa->serials); i++)
                tsa->serials[i].id = i;
@@ -746,7 +760,7 @@ static void tsa_remove(struct platform_device *pdev)
 }
 
 static const struct of_device_id tsa_id_table[] = {
-       { .compatible = "fsl,cpm1-tsa" },
+       { .compatible = "fsl,cpm1-tsa", .data = (void *)TSA_CPM1 },
        {} /* sentinel */
 };
 MODULE_DEVICE_TABLE(of, tsa_id_table);
-- 
2.45.0