Merge branch 'tracking-qcomlt-mainline-rpm-smd-pil' into integration-linux-qcomlt

* tracking-qcomlt-mainline-rpm-smd-pil: (43 commits)
  soc: qcom: smd-rpm: Correct the active vs sleep state flagging
  qcom-smd-rpm: Add MSM8916 support
  fixup! regulator: smd: Add floor and corner operations
  gpio:smp2p:qcom: kill set_irq_flags and use genirq
  qcom/smd: support transmit/receive the data not aligned to 32bit.
  remoteproc: tz_pil: skip waiting ready irq if it not provided
  remoteproc: tz_pil: take relocation flag into account
  remoteproc: tz_pil: make irqs, smd edge & crash-reason optional properties
  regulator: smd: remove left over debug statement
  regulator: smd: Add correct ifdef flag for stubs
  regulator: smd: Make set_{corner,floor} work with regulator struct
  regulator: smd: Add floor and corner operations
  HACK: soc: qcom: smd: Add debug to fix timing
  remoteproc: tz_pil: Fixes to support 8916
  gpio: qcom-smp2p: Fix compile issues
  dt-binding: gpio: Introduce qcom,smp2p binding documentation
  gpio: qcom-smp2p: Qualcomm Shared Memory Point to Point
  soc: qcom: smd: Use correct smem id
  gpio: smsm: Fix compiler warnings
  gpio: smsm: Update smem prototypes
  ...

2 files changed, 156 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/gpio/qcom,smp2p.txt b/Documentation/devicetree/bindings/gpio/qcom,smp2p.txt
new file mode 100644
index 000000000000..e758c8b5e3fc
--- /dev/null
+++ b/Documentation/devicetree/bindings/gpio/qcom,smp2p.txt
@@ -0,0 +1,105 @@
+Qualcomm Shared Memory Point 2 Point binding
+
+The Shared Memory Point to Point (SMP2P) protocol facilitates communication of
+a single 32-bit value between two processors.  Each value has a single writer
+(the local side) and a single reader (the remote side).  Values are uniquely
+identified in the system by the directed edge (local processor ID to remote
+processor ID) and a string identifier. This documents defines the binding for a
+driver that implements and exposes this protocol as a set of GPIO and interrupt
+controllers.
+
+- compatible:
+	Usage: required
+	Value type: <string>
+	Definition: must be one of:
+		    "qcom,smp2p"
+
+- interrupts:
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: one entry specifying the smp2p notification interrupt
+
+- qcom,ipc:
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: three entries specifying the outgoing ipc bit used for
+		    signaling the remote end of the smp2p edge:
+		    - phandle to a syscon node representing the apcs registers
+		    - u32 representing offset to the register within the syscon
+		    - u32 representing the ipc bit within the register
+
+- qcom,smem:
+	Usage: required
+	Value type: <u32 array>
+	Definition: two identifiers of the inbound and outbound smem items used
+		    for this edge
+
+- qcom,local-pid:
+	Usage: required
+	Value type: <u32>
+	Definition: specifies the identfier of the local endpoint of this edge
+
+- qcom,remote-pid:
+	Usage: required
+	Value type: <u32>
+	Definition: specifies the identfier of the remote endpoint of this edge
+
+= SUBNODES
+Each SMP2P pair contain a set of inbound and outbound entries, these are
+described in subnodes of the smp2p device node. The node names are not
+important.
+
+- qcom,entry-name:
+	Usage: required
+	Value type: <string>
+	Definition: specifies the name of this entry, for inbound entries this
+		    will be used to match against the remotely allocated entry
+		    and for outbound entries this name is used for allocating
+		    entries
+
+- qcom,inbound:
+	Usage: optional
+	Value type: <empty>
+	Definition: marks the entry as inbound; the node should be specified
+		    as a two cell interrupt-controller as defined in 
+		    "../interrupt-controller/interrupts.txt"
+
+- qcom,outbound:
+	Usage: optional
+	Value type: <empty>
+	Definition: marks the entry as outbound; the node should be specified
+		    as a two cell gpio-controller as defined in "gpio.txt"
+
+
+= EXAMPLE
+The following example shows the SMP2P setup with the wireless processor,
+defined from the 8974 apps processor's point-of-view. It encompasses one
+inbound and one outbound entry:
+
+wcnss-smp2p {
+	compatible = "qcom,smp2p";
+	qcom,smem = <431>, <451>;
+
+	interrupts = <0 143 1>;
+
+	qcom,ipc = <&apcs 8 18>;
+
+	qcom,local-pid = <0>;
+	qcom,remote-pid = <4>;
+
+	wcnss_smp2p_out: master-kernel {
+		qcom,entry-name = "master-kernel";
+		qcom,outbound;
+
+		gpio-controller;
+		#gpio-cells = <2>;
+	};
+
+	wcnss_smp2p_in: slave-kernel {
+		qcom,entry-name = "slave-kernel";
+		qcom,inbound;
+
+		interrupt-controller;
+		#interrupt-cells = <2>;
+	};
+};
diff --git a/Documentation/devicetree/bindings/soc/qcom/qcom,smem.txt b/Documentation/devicetree/bindings/soc/qcom/qcom,smem.txt
new file mode 100644
index 000000000000..19cad6cc427c
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/qcom/qcom,smem.txt
@@ -0,0 +1,51 @@
+Qualcomm Shared Memory Manager binding
+
+This binding describes the Qualcomm Shared Memory Manager, used to share data
+between various subsystems and OSes in Qualcomm platforms.
+
+- compatible:
+	Usage: required
+	Value type: <stringlist>
+	Definition: must be:
+		    "qcom,smem"
+
+- memory-region:
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: handle to memory reservation for main SMEM memory region.
+
+- reg:
+	Usage: optional
+	Value type: <prop-encoded-array>
+	Definition: base address and size pair for any additional memory areas
+		    of the shared memory.
+
+- hwlocks:
+	Usage: required
+	Value type: <prop-encoded-array>
+	Definition: reference to a hwspinlock used to protect allocations from
+		    the shared memory
+
+= EXAMPLE
+The following example shows the SMEM setup for MSM8974, with a main SMEM region
+at 0xfa00000 and an auxiliary region at 0xfc428000:
+
+	reserved-memory {
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges;
+
+		smem_region: smem@fa00000 {
+			reg = <0xfa00000 0x200000>;
+			no-map;
+		};
+	};
+
+	smem@fa00000 {
+		compatible = "qcom,smem";
+
+		memory-region = <&smem_region>;
+		reg = <0xfc428000 0x4000>;
+
+		hwlocks = <&tcsr_mutex 3>;
+	};