[PATCH v1 13/36] soc: fsl: cpm1: tsa: Introduce tsa_version
From: Herve Codina <herve.codina@bootlin.com>
Date: 2024-07-29 14:21:25
Also in:
linux-arm-kernel, linux-devicetree, lkml
Subsystem:
freescale quicc engine library, freescale quicc engine tsa driver, freescale soc drivers, the rest · Maintainers:
Qiang Zhao, Christophe Leroy, Herve Codina, Linus Torvalds
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.codina@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