[PATCH v4 42/45] media: ipu6: Add ipu7.5 buttress support

[Sakari Ailus <sakari.ailus@linux.intel.com>]

From: Antti Laakso <antti.laakso@linux.intel.com>

The ipu7.5 buttress differs from ipu7 slightly,
add support for ipu7.5.
Also set hardware version, firmware and model names
for ipu7.5.

Signed-off-by: Antti Laakso <antti.laakso@linux.intel.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
---
 drivers/media/pci/intel/ipu6/ipu6-buttress.c  | 53 +++++++++++++++++--
 .../intel/ipu6/ipu6-platform-buttress-regs.h  |  7 +++
 drivers/media/pci/intel/ipu6/ipu6.c           | 38 +++++++++++++
 drivers/media/pci/intel/ipu6/ipu6.h           |  1 +
 4 files changed, 94 insertions(+), 5 deletions(-)

diff --git a/drivers/media/pci/intel/ipu6/ipu6-buttress.c b/drivers/media/pci/intel/ipu6/ipu6-buttress.c
index 74db0a37561e..105de1744dff 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-buttress.c
+++ b/drivers/media/pci/intel/ipu6/ipu6-buttress.c
@@ -3,6 +3,7 @@
  * Copyright (C) 2013--2024 Intel Corporation
  */
 
+#include <asm/cpu_device_id.h>
 #include <linux/bitfield.h>
 #include <linux/bits.h>
 #include <linux/completion.h>
@@ -900,11 +901,30 @@ static int ipu6_buttress_send_tsc_request(struct ipu6_device *isp)
 	return ret;
 }
 
-int ipu6_buttress_start_tsc_sync(struct ipu6_device *isp)
+static int __ipu7p5_start_tsc_sync(struct ipu6_device *isp)
 {
-	unsigned int i;
+	u32 val;
+
+	val = readl(isp->base + IPU7_BUTTRESS_REG_TSC_CTL);
+	val |= IPU7_BUTTRESS_SEL_PB_TIMESTAMP;
+	writel(val, isp->base + IPU7_BUTTRESS_REG_TSC_CTL);
+
+	for (unsigned int i = 0; i < BUTTRESS_TSC_SYNC_RESET_TRIAL_MAX; i++) {
+		val = readl(isp->base + IPU7_BUTTRESS_REG_PB_TIMESTAMP_VALID);
+		if (val == 1)
+			return 0;
+
+		usleep_range(40, 50);
+	}
+
+	dev_err(&isp->pdev->dev, "TSC sync failed (timeout)\n");
+
+	return -ETIMEDOUT;
+}
 
-	for (i = 0; i < BUTTRESS_TSC_SYNC_RESET_TRIAL_MAX; i++) {
+static int __ipu6_start_tsc_sync(struct ipu6_device *isp)
+{
+	for (unsigned int i = 0; i < BUTTRESS_TSC_SYNC_RESET_TRIAL_MAX; i++) {
 		u32 val;
 		int ret;
 
@@ -925,6 +945,14 @@ int ipu6_buttress_start_tsc_sync(struct ipu6_device *isp)
 
 	return -ETIMEDOUT;
 }
+
+int ipu6_buttress_start_tsc_sync(struct ipu6_device *isp)
+{
+	if (IS_IPU7P5(isp))
+		return __ipu7p5_start_tsc_sync(isp);
+
+	return __ipu6_start_tsc_sync(isp);
+}
 EXPORT_SYMBOL_NS_GPL(ipu6_buttress_start_tsc_sync, "INTEL_IPU6");
 
 void ipu6_buttress_tsc_read(struct ipu6_device *isp, u64 *val)
@@ -987,6 +1015,13 @@ u32 ipu7_buttress_get_isys_freq(struct ipu6_device *isp)
 }
 EXPORT_SYMBOL_NS_GPL(ipu7_buttress_get_isys_freq, "INTEL_IPU6");
 
+static const struct x86_cpu_id ipu7_misc_cfg_exclusion[] = {
+	X86_MATCH_VFM_STEPS(INTEL_PANTHERLAKE_L, 0x1, 0x1, 0),
+	{},
+};
+
+#define IPU7_WRXREQOP_OVRD_VAL_MASK  GENMASK(22, 19)
+
 static void ipu7_buttress_setup(struct ipu6_device *isp)
 {
 	struct ipu6_buttress *b = &isp->buttress;
@@ -995,12 +1030,20 @@ static void ipu7_buttress_setup(struct ipu6_device *isp)
 	/* program PB BAR */
 	writel(0, isp->pb_base + IPU7_GLOBAL_INTERRUPT_MASK);
 	val = readl(isp->pb_base + IPU7_BAR2_MISC_CONFIG);
+
 	val |= 0x100U;
+	if (!IS_IPU7_MTL(isp) && !x86_match_cpu(ipu7_misc_cfg_exclusion))
+		val |= FIELD_PREP(IPU7_WRXREQOP_OVRD_VAL_MASK, 0xf) | BIT(18);
 
 	writel(val, isp->pb_base + IPU7_BAR2_MISC_CONFIG);
 
-	writel(BIT(22), isp->pb_base + IPU7_TLBID_HASH_ENABLE_63_32);
-	writel(BIT(1), isp->pb_base + IPU7_TLBID_HASH_ENABLE_127_96);
+	if (IS_IPU7P5(isp)) {
+		writel(BIT(14), isp->pb_base + IPU7_TLBID_HASH_ENABLE_63_32);
+		writel(BIT(9), isp->pb_base + IPU7_TLBID_HASH_ENABLE_95_64);
+	} else {
+		writel(BIT(22), isp->pb_base + IPU7_TLBID_HASH_ENABLE_63_32);
+		writel(BIT(1), isp->pb_base + IPU7_TLBID_HASH_ENABLE_127_96);
+	}
 
 	writel(b->regs->irq_all, isp->base + b->regs->irq_clear);
 	writel(b->regs->irq_all, isp->base + IPU7_BUTTRESS_REG_IRQ_MASK);
diff --git a/drivers/media/pci/intel/ipu6/ipu6-platform-buttress-regs.h b/drivers/media/pci/intel/ipu6/ipu6-platform-buttress-regs.h
index c4da72c6bd8f..57e661cc2177 100644
--- a/drivers/media/pci/intel/ipu6/ipu6-platform-buttress-regs.h
+++ b/drivers/media/pci/intel/ipu6/ipu6-platform-buttress-regs.h
@@ -233,6 +233,8 @@ enum {
 #define IPU7_BUTTRESS_REG_TSC_CMD		0x2014
 #define IPU7_BUTTRESS_REG_TSC_CTL		0x2018
 #define IPU7_BUTTRESS_REG_TSC_LO		0x201c
+#define IPU7_BUTTRESS_REG_PB_TIMESTAMP_LO	0x2030
+#define IPU7_BUTTRESS_REG_PB_TIMESTAMP_VALID	0x2038
 #define IPU7_BUTTRESS_REG_IS_WORKPOINT_REQ	0x2104
 #define IPU7_BUTTRESS_REG_PS_WORKPOINT_REQ	0x2100
 #define IPU7_BUTTRESS_REG_IDLE_WDT		0x218c
@@ -319,8 +321,13 @@ enum {
 
 /* PB registers */
 #define IPU7_GLOBAL_INTERRUPT_MASK		0x8
+#define IPU7_TLBID_HASH_ENABLE_31_0		0x30
 #define IPU7_TLBID_HASH_ENABLE_63_32		0x34
+#define IPU7_TLBID_HASH_ENABLE_95_64		0x38
 #define IPU7_TLBID_HASH_ENABLE_127_96		0x3c
 #define IPU7_BAR2_MISC_CONFIG			0x64
 
+/* IPU7.5 */
+#define IPU7_BUTTRESS_SEL_PB_TIMESTAMP		BIT(9)
+
 #endif /* IPU6_PLATFORM_BUTTRESS_REGS_H */
diff --git a/drivers/media/pci/intel/ipu6/ipu6.c b/drivers/media/pci/intel/ipu6/ipu6.c
index 14a60f10e649..74f9cf96410f 100644
--- a/drivers/media/pci/intel/ipu6/ipu6.c
+++ b/drivers/media/pci/intel/ipu6/ipu6.c
@@ -197,6 +197,36 @@ static const struct ipu6_buttress_registers ipu7_buttress_regs = {
 	.irq_sai	= IPU7_BUTTRESS_IRQ_SAI_VIOLATION,
 };
 
+static const struct ipu6_buttress_registers ipu7p5_buttress_regs = {
+	/* Registers */
+	.irq_status	= IPU7_BUTTRESS_REG_IRQ_STATUS,
+	.irq_clear	= IPU7_BUTTRESS_REG_IRQ_CLEAR,
+	.irq_enable	= IPU7_BUTTRESS_REG_IRQ_ENABLE,
+	.pwr_status	= IPU7_BUTTRESS_REG_PWR_STATUS,
+	.security_ctl	= IPU7_BUTTRESS_REG_SECURITY_CTL,
+	.fw_reset_ctl	= IPU7_BUTTRESS_REG_FW_RESET_CTL,
+	.fabric_cmd	= IPU7_BUTTRESS_REG_TSC_CMD,
+	.tsw_ctl	= IPU7_BUTTRESS_REG_TSC_CTL,
+	.tsc_lo		= IPU7_BUTTRESS_REG_PB_TIMESTAMP_LO,
+	.wdt		= IPU7_BUTTRESS_REG_IDLE_WDT,
+	.csr_in		= IPU7_BUTTRESS_REG_CSE2IUCSR,
+	.csr_out	= IPU7_BUTTRESS_REG_IU2CSECSR,
+	.db0_in		= IPU7_BUTTRESS_REG_CSE2IUDB0,
+	.db0_out	= IPU7_BUTTRESS_REG_IU2CSEDB0,
+	.data0_in	= IPU7_BUTTRESS_REG_CSE2IUDATA0,
+	.data0_out	= IPU7_BUTTRESS_REG_IU2CSEDATA0,
+	.sku_id		= IPU7_BUTTRESS_REG_SKU,
+
+	/* Bitmasks */
+	.irq_is		= IPU7_BUTTRESS_IRQ_IS_IRQ,
+	.irq_ps		= IPU7_BUTTRESS_IRQ_PS_IRQ,
+	.irq_all	= IPU7_BUTTRESS_IRQS,
+	.irq_events	= IPU7_BUTTRESS_IRQS,
+	.irq_cse_ipc	= IPU7_BUTTRESS_IRQ_IPC_FROM_CSE_IS_WAITING,
+	.irq_exec_done	= IPU7_BUTTRESS_IRQ_IPC_EXEC_DONE_BY_CSE,
+	.irq_sai	= IPU7_BUTTRESS_IRQ_SAI_VIOLATION,
+};
+
 static void
 ipu6_pkg_dir_configure_spc(struct ipu6_device *isp,
 			   const struct ipu6_hw_variants *hw_variant,
@@ -624,6 +654,14 @@ static int ipu6_pci_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 		isys_ctrl = &ipu7_isys_buttress_ctrl;
 		psys_ctrl = &ipu7_psys_buttress_ctrl;
 		break;
+	case PCI_DEVICE_ID_INTEL_IPU7P5:
+		isp->hw_ver = IPU_VERSION_7P5;
+		isp->cpd_fw_name = IPU7P5_FIRMWARE_NAME;
+		isp->model_name = IPU7P5_MEDIA_DEV_MODEL_NAME;
+		isp->buttress.regs = &ipu7p5_buttress_regs;
+		isys_ctrl = &ipu7_isys_buttress_ctrl;
+		psys_ctrl = &ipu7_psys_buttress_ctrl;
+		break;
 	default:
 		return dev_err_probe(dev, -ENODEV,
 				     "Unsupported IPU6 device %x\n",
diff --git a/drivers/media/pci/intel/ipu6/ipu6.h b/drivers/media/pci/intel/ipu6/ipu6.h
index 8a696caf4b88..72c5063d5198 100644
--- a/drivers/media/pci/intel/ipu6/ipu6.h
+++ b/drivers/media/pci/intel/ipu6/ipu6.h
@@ -25,6 +25,7 @@ struct ipu6_bus_device;
 #define IPU6EPMTL_FIRMWARE_NAME		"intel/ipu/ipu6epmtl_fw.bin"
 #define IPU6EPADLN_FIRMWARE_NAME	"intel/ipu/ipu6epadln_fw.bin"
 #define IPU7_FIRMWARE_NAME		"intel/ipu/ipu7_fw.bin"
+#define IPU7P5_FIRMWARE_NAME		"intel/ipu/ipu7ptl_fw.bin"
 
 #define IPU_VERSION_6		BIT(0) /* TGL */
 #define IPU_VERSION_6SE		BIT(1) /* JSL */
-- 
2.47.3