Merge tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linuxgrafted

Pull I3C updates from Alexandre Belloni:
 "A new driver this cycle, for the AMD AXI I3C controller.

  There are also new features such as IBI wakeup support, SETAASA device
  discovery and ACPI support for the the DAA methods, meaning we can now
  communicate with the SPD devices on DDR5 modules.

  New driver:
   - AMD AXI I3C master controller

  Subsystem:
   - I3C Common Command Code (CCC) handling improvements, especially
     around GET CCCs
   - SETAASA device discovery support
   - ACPI support for all existing DAA methods like SETDASA, SETNEWDA as
     well as I2C devices on I3C bus
   - IBI-based wakeup support

  Drivers:
   - dw: SETAASA support
   - mipi-i3c-hci: advertise IBI wakeup capability, AMD_PT I3C
     controller support, PIO queue management support for HCI v1.2
   - renesas: improve suspend to RAM support, add runtime PM support"

* tag 'i3c/for-7.3' of git://git.kernel.org/pub/scm/linux/kernel/git/i3c/linux: (70 commits)
  i3c: dw: reduce do_daa time if there's no client
  i3c: mipi-i3c-hci: Add support for AMD_PT I3C controller
  i3c: mipi-i3c-hci: Add PIO queue management support for HCI v1.2
  i3c: mipi-i3c-hci: Fix missing STAT_IBI_STATUS_THLD in PIO mode
  i3c: dw: rename "pclk" to "apb" to match dt-binding
  i3c: dw: make struct dw_i3c_cmd smaller
  i3c: dw: use COMMAND_PORT_TRANSFER_ARG instead of hardcoding
  i3c: renesas: Don't register devices when ENTDAA times out
  i3c: master: dw-i3c-master: fix OD timing for first broadcast
  i3c: mipi-i3c-hci: Advertise IBI wakeup capability
  i3c: mipi-i3c-hci: Factor out i3c_hci_sysdev()
  i3c: mipi-i3c-hci-pci: Propagate I3C wakeup requirements to PCI
  i3c: master: Reject IBI requests from non-IBI-capable devices
  i3c: master: Add helper to query bus wakeup requirements
  i3c: master: Report wakeup events for IBIs
  i3c: master: Support IBI-based wakeup capability
  i3c: master: Fix potential UAF in i3c_device_match()
  i3c: master: Fix potential UAF in i3c_device_uevent()
  i3c: Make dev->desc locking assumptions explicit
  i3c: master: Fix use-after-free of master->this
  ...

1 files changed, 133 insertions, 0 deletions

diff --git a/drivers/parisc/asp.c b/drivers/parisc/asp.c
new file mode 100644
index 000000000..32af8f095
--- /dev/null
+++ b/drivers/parisc/asp.c
@@ -0,0 +1,133 @@
+// SPDX-License-Identifier: GPL-2.0-or-later
+/*
+ *	ASP Device Driver
+ *
+ *	(c) Copyright 2000 The Puffin Group Inc.
+ *
+ *	(c) 2000-2023 by Helge Deller <deller@gmx.de>
+ */
+
+#include <linux/errno.h>
+#include <linux/init.h>
+#include <linux/interrupt.h>
+#include <linux/module.h>
+#include <linux/types.h>
+#include <asm/io.h>
+#include <asm/led.h>
+
+#include "gsc.h"
+
+#define ASP_GSC_IRQ	3		/* hardcoded interrupt for GSC */
+
+#define ASP_VER_OFFSET 	0x20		/* offset of ASP version */
+
+#define ASP_LED_ADDR	0xf0800020
+
+#define VIPER_INT_WORD  0xFFFBF088      /* addr of viper interrupt word */
+
+static struct gsc_asic asp;
+
+static void asp_choose_irq(struct parisc_device *dev, void *ctrl)
+{
+	int irq;
+
+	switch (dev->id.sversion) {
+	case 0x71:	irq =  9; break; /* SCSI */
+	case 0x72:	irq =  8; break; /* LAN */
+	case 0x73:	irq =  1; break; /* HIL */
+	case 0x74:	irq =  7; break; /* Centronics */
+	case 0x75:	irq = (dev->hw_path == 4) ? 5 : 6; break; /* RS232 */
+	case 0x76:	irq = 10; break; /* EISA BA */
+	case 0x77:	irq = 11; break; /* Graphics1 */
+	case 0x7a:	irq = 13; break; /* Audio (Bushmaster) */
+	case 0x7b:	irq = 13; break; /* Audio (Scorpio) */
+	case 0x7c:	irq =  3; break; /* FW SCSI */
+	case 0x7d:	irq =  4; break; /* FDDI */
+	case 0x7f:	irq = 13; break; /* Audio (Outfield) */
+	default:	return;		 /* Unknown */
+	}
+
+	gsc_asic_assign_irq(ctrl, irq, &dev->irq);
+
+	switch (dev->id.sversion) {
+	case 0x73:	irq =  2; break; /* i8042 High-priority */
+	case 0x76:	irq =  0; break; /* EISA BA */
+	default:	return;		 /* Other */
+	}
+
+	gsc_asic_assign_irq(ctrl, irq, &dev->aux_irq);
+}
+
+/* There are two register ranges we're interested in.  Interrupt /
+ * Status / LED are at 0xf080xxxx and Asp special registers are at
+ * 0xf082fxxx.  PDC only tells us that Asp is at 0xf082f000, so for
+ * the purposes of interrupt handling, we have to tell other bits of
+ * the kernel to look at the other registers.
+ */
+#define ASP_INTERRUPT_ADDR 0xf0800000
+
+static int __init asp_init_chip(struct parisc_device *dev)
+{
+	struct gsc_irq gsc_irq;
+	int ret;
+
+	asp.version = gsc_readb(dev->hpa.start + ASP_VER_OFFSET) & 0xf;
+	asp.name = (asp.version == 1) ? "Asp" : "Cutoff";
+	asp.hpa = ASP_INTERRUPT_ADDR;
+
+	printk(KERN_INFO "%s version %d at 0x%lx found.\n", 
+		asp.name, asp.version, (unsigned long)dev->hpa.start);
+
+	/* the IRQ ASP should use */
+	ret = -EBUSY;
+	dev->irq = gsc_claim_irq(&gsc_irq, ASP_GSC_IRQ);
+	if (dev->irq < 0) {
+		printk(KERN_ERR "%s(): cannot get GSC irq\n", __func__);
+		goto out;
+	}
+
+	asp.eim = ((u32) gsc_irq.txn_addr) | gsc_irq.txn_data;
+
+	ret = request_irq(gsc_irq.irq, gsc_asic_intr, 0, "asp", &asp);
+	if (ret < 0)
+		goto out;
+
+	/* Program VIPER to interrupt on the ASP irq */
+	gsc_writel((1 << (31 - ASP_GSC_IRQ)),VIPER_INT_WORD);
+
+	/* Done init'ing, register this driver */
+	ret = gsc_common_setup(dev, &asp);
+	if (ret)
+		goto out;
+
+	gsc_fixup_irqs(dev, &asp, asp_choose_irq);
+	/* Mongoose is a sibling of Asp, not a child... */
+	gsc_fixup_irqs(parisc_parent(dev), &asp, asp_choose_irq);
+
+	/* initialize the chassis LEDs */ 
+#ifdef CONFIG_CHASSIS_LCD_LED	
+	register_led_driver(DISPLAY_MODEL_OLD_ASP, LED_CMD_REG_NONE, 
+		    ASP_LED_ADDR);
+#endif
+
+ out:
+	return ret;
+}
+
+static const struct parisc_device_id asp_tbl[] __initconst = {
+	{ HPHW_BA, HVERSION_REV_ANY_ID, HVERSION_ANY_ID, 0x00070 },
+	{ 0, }
+};
+MODULE_DEVICE_TABLE(parisc, asp_tbl);
+
+static struct parisc_driver asp_driver __refdata = {
+	.name =		"asp",
+	.id_table =	asp_tbl,
+	.probe =	asp_init_chip,
+};
+
+static int __init asp_init(void)
+{
+	return register_parisc_driver(&asp_driver);
+}
+arch_initcall(asp_init);