Merge branch 'for-6.15/amd_sfh' into for-linus

From: Mario Limonciello <mario.limonciello@amd.com>

Some platforms include a human presence detection (HPD) sensor. When
enabled and a user is detected a wake event will be emitted from the
sensor fusion hub that software can react to.

Example use cases are "wake from suspend on approach" or to "lock
when leaving".

This is currently enabled by default on supported systems, but users
can't control it. This essentially means that wake on approach is
enabled which is a really surprising behavior to users that don't
expect it.

Instead of defaulting to enabled add a sysfs knob that users can
use to enable the feature if desirable and set it to disabled by
default.

1 files changed, 39 insertions, 11 deletions

diff --git a/drivers/pci/controller/pcie-xilinx-cpm.c b/drivers/pci/controller/pcie-xilinx-cpm.c
index a0f5e1d67b04c..81e8bfae53d00 100644
--- a/drivers/pci/controller/pcie-xilinx-cpm.c
+++ b/drivers/pci/controller/pcie-xilinx-cpm.c
@@ -30,11 +30,14 @@
 #define XILINX_CPM_PCIE_REG_IDRN_MASK	0x00000E3C
 #define XILINX_CPM_PCIE_MISC_IR_STATUS	0x00000340
 #define XILINX_CPM_PCIE_MISC_IR_ENABLE	0x00000348
-#define XILINX_CPM_PCIE_MISC_IR_LOCAL	BIT(1)
+#define XILINX_CPM_PCIE0_MISC_IR_LOCAL	BIT(1)
+#define XILINX_CPM_PCIE1_MISC_IR_LOCAL	BIT(2)
 
-#define XILINX_CPM_PCIE_IR_STATUS       0x000002A0
-#define XILINX_CPM_PCIE_IR_ENABLE       0x000002A8
-#define XILINX_CPM_PCIE_IR_LOCAL        BIT(0)
+#define XILINX_CPM_PCIE0_IR_STATUS	0x000002A0
+#define XILINX_CPM_PCIE1_IR_STATUS	0x000002B4
+#define XILINX_CPM_PCIE0_IR_ENABLE	0x000002A8
+#define XILINX_CPM_PCIE1_IR_ENABLE	0x000002BC
+#define XILINX_CPM_PCIE_IR_LOCAL	BIT(0)
 
 #define IMR(x) BIT(XILINX_PCIE_INTR_ ##x)
 
@@ -80,14 +83,21 @@
 enum xilinx_cpm_version {
 	CPM,
 	CPM5,
+	CPM5_HOST1,
 };
 
 /**
  * struct xilinx_cpm_variant - CPM variant information
  * @version: CPM version
+ * @ir_status: Offset for the error interrupt status register
+ * @ir_enable: Offset for the CPM5 local error interrupt enable register
+ * @ir_misc_value: A bitmask for the miscellaneous interrupt status
  */
 struct xilinx_cpm_variant {
 	enum xilinx_cpm_version version;
+	u32 ir_status;
+	u32 ir_enable;
+	u32 ir_misc_value;
 };
 
 /**
@@ -269,6 +279,7 @@ static void xilinx_cpm_pcie_event_flow(struct irq_desc *desc)
 {
 	struct xilinx_cpm_pcie *port = irq_desc_get_handler_data(desc);
 	struct irq_chip *chip = irq_desc_get_chip(desc);
+	const struct xilinx_cpm_variant *variant = port->variant;
 	unsigned long val;
 	int i;
 
@@ -279,11 +290,11 @@ static void xilinx_cpm_pcie_event_flow(struct irq_desc *desc)
 		generic_handle_domain_irq(port->cpm_domain, i);
 	pcie_write(port, val, XILINX_CPM_PCIE_REG_IDR);
 
-	if (port->variant->version == CPM5) {
-		val = readl_relaxed(port->cpm_base + XILINX_CPM_PCIE_IR_STATUS);
+	if (variant->ir_status) {
+		val = readl_relaxed(port->cpm_base + variant->ir_status);
 		if (val)
 			writel_relaxed(val, port->cpm_base +
-					    XILINX_CPM_PCIE_IR_STATUS);
+				       variant->ir_status);
 	}
 
 	/*
@@ -465,6 +476,8 @@ static int xilinx_cpm_setup_irq(struct xilinx_cpm_pcie *port)
  */
 static void xilinx_cpm_pcie_init_port(struct xilinx_cpm_pcie *port)
 {
+	const struct xilinx_cpm_variant *variant = port->variant;
+
 	if (cpm_pcie_link_up(port))
 		dev_info(port->dev, "PCIe Link is UP\n");
 	else
@@ -483,15 +496,15 @@ static void xilinx_cpm_pcie_init_port(struct xilinx_cpm_pcie *port)
 	 * XILINX_CPM_PCIE_MISC_IR_ENABLE register is mapped to
 	 * CPM SLCR block.
 	 */
-	writel(XILINX_CPM_PCIE_MISC_IR_LOCAL,
+	writel(variant->ir_misc_value,
 	       port->cpm_base + XILINX_CPM_PCIE_MISC_IR_ENABLE);
 
-	if (port->variant->version == CPM5) {
+	if (variant->ir_enable) {
 		writel(XILINX_CPM_PCIE_IR_LOCAL,
-		       port->cpm_base + XILINX_CPM_PCIE_IR_ENABLE);
+		       port->cpm_base + variant->ir_enable);
 	}
 
-	/* Enable the Bridge enable bit */
+	/* Set Bridge enable bit */
 	pcie_write(port, pcie_read(port, XILINX_CPM_PCIE_REG_RPSC) |
 		   XILINX_CPM_PCIE_REG_RPSC_BEN,
 		   XILINX_CPM_PCIE_REG_RPSC);
@@ -609,10 +622,21 @@ err_parse_dt:
 
 static const struct xilinx_cpm_variant cpm_host = {
 	.version = CPM,
+	.ir_misc_value = XILINX_CPM_PCIE0_MISC_IR_LOCAL,
 };
 
 static const struct xilinx_cpm_variant cpm5_host = {
 	.version = CPM5,
+	.ir_misc_value = XILINX_CPM_PCIE0_MISC_IR_LOCAL,
+	.ir_status = XILINX_CPM_PCIE0_IR_STATUS,
+	.ir_enable = XILINX_CPM_PCIE0_IR_ENABLE,
+};
+
+static const struct xilinx_cpm_variant cpm5_host1 = {
+	.version = CPM5_HOST1,
+	.ir_misc_value = XILINX_CPM_PCIE1_MISC_IR_LOCAL,
+	.ir_status = XILINX_CPM_PCIE1_IR_STATUS,
+	.ir_enable = XILINX_CPM_PCIE1_IR_ENABLE,
 };
 
 static const struct of_device_id xilinx_cpm_pcie_of_match[] = {
@@ -624,6 +648,10 @@ static const struct of_device_id xilinx_cpm_pcie_of_match[] = {
 		.compatible = "xlnx,versal-cpm5-host",
 		.data = &cpm5_host,
 	},
+	{
+		.compatible = "xlnx,versal-cpm5-host1",
+		.data = &cpm5_host1,
+	},
 	{}
 };