[PATCH v3 5/5] pps: generators: tio: Introduce Intel Elkhart Lake PSE TIO

[Raag Jadav]

Add initial support for Intel Elkhart Lake PSE TIO controller.

Signed-off-by: Raag Jadav <raag.jadav@xxxxxxxxx>
Acked-by: Rodolfo Giometti <giometti@xxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
---
 drivers/pps/generators/Kconfig       |  2 +-
 drivers/pps/generators/pps_gen_tio.c | 17 ++++++++++++++++-
 drivers/pps/generators/pps_gen_tio.h |  5 +++++
 3 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/drivers/pps/generators/Kconfig b/drivers/pps/generators/Kconfig
index b3f340ed3163..83aada693ad2 100644
--- a/drivers/pps/generators/Kconfig
+++ b/drivers/pps/generators/Kconfig
@@ -33,7 +33,7 @@ config PPS_GENERATOR_PARPORT
 
 config PPS_GENERATOR_TIO
 	tristate "TIO PPS signal generator"
-	depends on X86 && CPU_SUP_INTEL
+	depends on X86 && CPU_SUP_INTEL && MFD_INTEL_EHL_PSE_GPIO
 	help
 	  If you say yes here you get support for a PPS TIO signal generator
 	  which generates a pulse at a prescribed time based on the system clock.
diff --git a/drivers/pps/generators/pps_gen_tio.c b/drivers/pps/generators/pps_gen_tio.c
index 6e3a4b198259..a2a23cdc2568 100644
--- a/drivers/pps/generators/pps_gen_tio.c
+++ b/drivers/pps/generators/pps_gen_tio.c
@@ -231,6 +231,14 @@ static const struct pps_tio_data pmc_data = {
 	},
 };
 
+static const struct pps_tio_data ehl_pse_data = {
+	.regs = {
+		.ctl = TIOCTL_PSE,
+		.compv = TIOCOMPV_PSE,
+		.ec = TIOEC_PSE,
+	},
+};
+
 static const struct acpi_device_id intel_pmc_tio_acpi_match[] = {
 	{ "INTC1021", (kernel_ulong_t)&pmc_data },
 	{ "INTC1022", (kernel_ulong_t)&pmc_data },
@@ -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@xxxxxxxxx>");
 MODULE_AUTHOR("Pandith N <pandith.n@xxxxxxxxx>");
 MODULE_AUTHOR("Thejesh Reddy T R <thejesh.reddy.t.r@xxxxxxxxx>");
 MODULE_AUTHOR("Subramanian Mohan <subramanian.mohan@xxxxxxxxx>");
-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 4329b6dbd598..509bd2633dfb 100644
--- a/drivers/pps/generators/pps_gen_tio.h
+++ b/drivers/pps/generators/pps_gen_tio.h
@@ -18,6 +18,11 @@
 
 struct device;
 
+/* 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