linux-kernel - [PATCH v1 3/4] pps: generators: tio: Introduce Intel Elkhart Lake PSE TIO

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Message-Id: <20250226061527.3031250-4-raag.jadav@intel.com>
Date: Wed, 26 Feb 2025 11:45:26 +0530
From: Raag Jadav <raag.jadav@...el.com>
To: lee@...nel.org,
	giometti@...eenne.com,
	gregkh@...uxfoundation.org,
	andriy.shevchenko@...ux.intel.com,
	raymond.tan@...el.com
Cc: linux-kernel@...r.kernel.org,
	Raag Jadav <raag.jadav@...el.com>
Subject: [PATCH v1 3/4] pps: generators: tio: Introduce Intel Elkhart Lake PSE TIO

Add initial support for Intel Elkhart Lake PSE TIO controller.

Signed-off-by: Raag Jadav <raag.jadav@...el.com>
---
 drivers/pps/generators/pps_gen_tio.c | 17 ++++++++++++++++-
 drivers/pps/generators/pps_gen_tio.h |  5 +++++
 2 files changed, 21 insertions(+), 1 deletion(-)

diff --git a/drivers/pps/generators/pps_gen_tio.c b/drivers/pps/generators/pps_gen_tio.c
index 89b08301d21e..8339d8c8f8bb 100644
--- a/drivers/pps/generators/pps_gen_tio.c
+++ b/drivers/pps/generators/pps_gen_tio.c
@@ -22,6 +22,14 @@
 
 #include "pps_gen_tio.h"
 
+static const struct pps_tio_data ehl_pse_data = {
+	.regs = {
+		.ctl = TIOCTL_PSE,
+		.compv = TIOCOMPV_PSE,
+		.ec = TIOEC_PSE,
+	},
+};
+
 static const struct pps_tio_data pmc_data = {
 	.regs = {
 		.ctl = TIOCTL_PMC,
@@ -240,9 +248,16 @@ static const struct acpi_device_id intel_pmc_tio_acpi_match[] = {
 };
 MODULE_DEVICE_TABLE(acpi, intel_pmc_tio_acpi_match);
 
+static const struct platform_device_id pps_gen_tio_ids[] = {
+	{ "pps-gen-tio", (kernel_ulong_t)&ehl_pse_data },
+	{ }
+};
+MODULE_DEVICE_TABLE(platform, pps_gen_tio_ids);
+
 static struct platform_driver pps_gen_tio_driver = {
 	.probe          = pps_gen_tio_probe,
 	.remove         = pps_gen_tio_remove,
+	.id_table	= pps_gen_tio_ids,
 	.driver         = {
 		.name                   = "intel-pps-gen-tio",
 		.acpi_match_table       = intel_pmc_tio_acpi_match,
@@ -255,5 +270,5 @@ MODULE_AUTHOR("Lakshmi Sowjanya D <lakshmi.sowjanya.d@...el.com>");
 MODULE_AUTHOR("Pandith N <pandith.n@...el.com>");
 MODULE_AUTHOR("Thejesh Reddy T R <thejesh.reddy.t.r@...el.com>");
 MODULE_AUTHOR("Subramanian Mohan <subramanian.mohan@...el.com>");
-MODULE_DESCRIPTION("Intel PMC Time-Aware IO Generator Driver");
+MODULE_DESCRIPTION("Intel Time-Aware IO Generator Driver");
 MODULE_LICENSE("GPL");
diff --git a/drivers/pps/generators/pps_gen_tio.h b/drivers/pps/generators/pps_gen_tio.h
index e652f976e455..bbf5b994e7ff 100644
--- a/drivers/pps/generators/pps_gen_tio.h
+++ b/drivers/pps/generators/pps_gen_tio.h
@@ -14,6 +14,11 @@
 #include <linux/pps_gen_kernel.h>
 #include <linux/spinlock_types.h>
 
+/* EHL PSE Registers */
+#define TIOCTL_PSE			0x00
+#define TIOCOMPV_PSE			0x04
+#define TIOEC_PSE			0x24
+
 /* PMC Registers */
 #define TIOCTL_PMC			0x00
 #define TIOCOMPV_PMC			0x10
-- 
2.34.1