From: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Tue, 5 Feb 2019 11:06:57 +0000 (+0200)
Subject: x86: tangier: Add initial ACPI support for PMIC device
X-Git-Url: http://git.dujemihanovic.xyz/img/static/git-favicon.png?a=commitdiff_plain;h=24b56e2bf369ac003ccaac37d8bb80e08b743e16;p=u-boot.git

x86: tangier: Add initial ACPI support for PMIC device

Basin Cove PMIC is connected to I2C0 bus which is hidden from the OS
and access is going via SCU device, enumerated via PCI.

For now, we add just a minimum support of PMIC device to allow enabling,
e.g. USB OTG, in the OS.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Bin Meng <bmeng.cn@gmail.com>
---

diff --git a/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl b/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl
index e166e510cb..baad98b1c7 100644
--- a/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl
+++ b/arch/x86/include/asm/arch-tangier/acpi/southcluster.asl
@@ -320,6 +320,93 @@ Device (PCI0)
             })
         }
     }
+
+    Device (IPC1)
+    {
+        Name (_ADR, 0x00130000)
+
+        Method (_STA, 0, NotSerialized)
+        {
+            Return (STA_VISIBLE)
+        }
+
+        Device (PMIC)
+        {
+            Name (_ADR, Zero)
+            Name (_HID, "INTC100E")
+            Name (_CID, "INTC100E")
+            Name (_DDN, "Basin Cove PMIC")
+            Name (_DEP, Package ()
+            {
+                IPC1
+            })
+
+            Method (_STA, 0, NotSerialized)
+            {
+                Return (STA_VISIBLE)
+            }
+
+            Method (_CRS, 0, Serialized)
+            {
+                Name (RBUF, ResourceTemplate()
+                {
+                    /*
+		     * Shadow registers in SRAM for PMIC:
+		     *   SRAM	PMIC register
+		     *   --------------------
+		     *   0x00-	Unknown
+		     *   0x03	THRMIRQ (0x04)
+		     *   0x04	BCUIRQ (0x05)
+		     *   0x05	ADCIRQ (0x06)
+		     *   0x06	CHGRIRQ0 (0x07)
+		     *   0x07	CHGRIRQ1 (0x08)
+		     *   0x08-	Unknown
+		     *   0x0a	PBSTATUS (0x27)
+		     *   0x0b-	Unknown
+		     */
+                    Memory32Fixed(ReadWrite, 0xFFFFF610, 0x00000010)
+                    Interrupt(ResourceConsumer, Level, ActiveHigh, Shared, ,, ) { 30 }
+                    Interrupt(ResourceConsumer, Level, ActiveHigh, Shared, ,, ) { 23 }
+                    Interrupt(ResourceConsumer, Level, ActiveHigh, Shared, ,, ) { 52 }
+                    Interrupt(ResourceConsumer, Level, ActiveHigh, Shared, ,, ) { 51 }
+                    Interrupt(ResourceConsumer, Level, ActiveHigh, Shared, ,, ) { 50 }
+                    Interrupt(ResourceConsumer, Level, ActiveHigh, Shared, ,, ) { 27 }
+                    Interrupt(ResourceConsumer, Level, ActiveHigh, Shared, ,, ) { 49 }
+                })
+                Return (RBUF)
+            }
+
+            OperationRegion (PMOP, 0x8D, Zero, 0x0100)
+            Field (PMOP, DWordAcc, NoLock, Preserve)
+            {
+                SEL1,   32,
+                SEL2,   32,
+                VCCL,   32,
+                VNNL,   32,
+                AONL,   32,
+                CNTC,   32,
+                CNTN,   32,
+                AONN,   32,
+                CNT1,   32,
+                CNT2,   32,
+                CNT3,   32,
+                FLEX,   32,
+                PRG1,   32,
+                PRG2,   32,
+                PRG3,   32,
+                VLDO,   32,
+            }
+
+            Name (AVBL, Zero)
+            Method (_REG, 2, NotSerialized)
+            {
+                If ((Arg0 == 0x8D))
+                {
+                    AVBL = Arg1
+                }
+            }
+        }
+    }
 }
 
 Device (FLIS)