[RESEND PATCH 00/14] serial: lantiq: Add CCF suppport

[RESEND PATCH 00/14] serial: lantiq: Add CCF suppport

[Songjun Wu]

This patch series is for adding common clock framework support
for lantiq serial driver, mainly includes:
1) Add common clock framework support.
2) Modify the dts file according to the DT conventions.
3) Replace the platform dependent functions with kernel functions



Songjun Wu (14):
  MIPS: dts: Change upper case to lower case
  MIPS: dts: Add aliases node for lantiq danube serial
  serial: lantiq: Get serial id from dts
  serial: lantiq: Change ltq_w32_mask to asc_update_bits
  MIPS: lantiq: Unselect SWAP_IO_SPACE when LANTIQ is selected
  serial: lantiq: Use readl/writel instead of ltq_r32/ltq_w32
  serial: lantiq: Rename fpiclk to freqclk
  serial: lantiq: Replace clk_enable/clk_disable with clk generic API
  serial: lantiq: Add CCF support
  serial: lantiq: Reorder the head files
  include: Add lantiq.h in include/linux/
  serial: lantiq: Replace lantiq_soc.h with lantiq.h
  serial: lantiq: Change init_lqasc to static declaration
  dt-bindings: serial: lantiq: Add optional properties for CCF

 .../devicetree/bindings/serial/lantiq_asc.txt      |  15 +++
 arch/mips/Kconfig                                  |   1 -
 arch/mips/boot/dts/lantiq/danube.dtsi              |  42 +++---
 arch/mips/boot/dts/lantiq/easy50712.dts            |  18 ++-
 drivers/tty/serial/lantiq.c                        | 145 ++++++++++++---------
 include/linux/lantiq.h                             |  23 ++++
 6 files changed, 155 insertions(+), 89 deletions(-)
 create mode 100644 include/linux/lantiq.h

-- 
2.11.0

[RESEND PATCH 01/14] MIPS: dts: Change upper case to lower case

[Songjun Wu]

All the upper case in unit-address and hex constants are
changed to lower case according to the DT conventions.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Songjun Wu <songjun.wu@linux.intel.com>
---

 arch/mips/boot/dts/lantiq/danube.dtsi   | 42 ++++++++++++++++-----------------
 arch/mips/boot/dts/lantiq/easy50712.dts | 14 +++++------
 2 files changed, 28 insertions(+), 28 deletions(-)

diff --git a/arch/mips/boot/dts/lantiq/danube.dtsi b/arch/mips/boot/dts/lantiq/danube.dtsi
index 2dd950181f8a..510be63c8bdf 100644
--- a/arch/mips/boot/dts/lantiq/danube.dtsi
+++ b/arch/mips/boot/dts/lantiq/danube.dtsi
@@ -10,12 +10,12 @@
 		};
 	};
 
-	biu@1F800000 {
+	biu@1f800000 {
 		#address-cells = <1>;
 		#size-cells = <1>;
 		compatible = "lantiq,biu", "simple-bus";
-		reg = <0x1F800000 0x800000>;
-		ranges = <0x0 0x1F800000 0x7FFFFF>;
+		reg = <0x1f800000 0x800000>;
+		ranges = <0x0 0x1f800000 0x7fffff>;
 
 		icu0: icu@80200 {
 			#interrupt-cells = <1>;
@@ -24,18 +24,18 @@
 			reg = <0x80200 0x120>;
 		};
 
-		watchdog@803F0 {
+		watchdog@803f0 {
 			compatible = "lantiq,wdt";
-			reg = <0x803F0 0x10>;
+			reg = <0x803f0 0x10>;
 		};
 	};
 
-	sram@1F000000 {
+	sram@1f000000 {
 		#address-cells = <1>;
 		#size-cells = <1>;
 		compatible = "lantiq,sram";
-		reg = <0x1F000000 0x800000>;
-		ranges = <0x0 0x1F000000 0x7FFFFF>;
+		reg = <0x1f000000 0x800000>;
+		ranges = <0x0 0x1f000000 0x7fffff>;
 
 		eiu0: eiu@101000 {
 			#interrupt-cells = <1>;
@@ -66,41 +66,41 @@
 		#address-cells = <1>;
 		#size-cells = <1>;
 		compatible = "lantiq,fpi", "simple-bus";
-		ranges = <0x0 0x10000000 0xEEFFFFF>;
-		reg = <0x10000000 0xEF00000>;
+		ranges = <0x0 0x10000000 0xeefffff>;
+		reg = <0x10000000 0xef00000>;
 
-		gptu@E100A00 {
+		gptu@e100a00 {
 			compatible = "lantiq,gptu-xway";
-			reg = <0xE100A00 0x100>;
+			reg = <0xe100a00 0x100>;
 		};
 
-		serial@E100C00 {
+		serial@e100c00 {
 			compatible = "lantiq,asc";
-			reg = <0xE100C00 0x400>;
+			reg = <0xe100c00 0x400>;
 			interrupt-parent = <&icu0>;
 			interrupts = <112 113 114>;
 		};
 
-		dma0: dma@E104100 {
+		dma0: dma@e104100 {
 			compatible = "lantiq,dma-xway";
-			reg = <0xE104100 0x800>;
+			reg = <0xe104100 0x800>;
 		};
 
-		ebu0: ebu@E105300 {
+		ebu0: ebu@e105300 {
 			compatible = "lantiq,ebu-xway";
-			reg = <0xE105300 0x100>;
+			reg = <0xe105300 0x100>;
 		};
 
-		pci0: pci@E105400 {
+		pci0: pci@e105400 {
 			#address-cells = <3>;
 			#size-cells = <2>;
 			#interrupt-cells = <1>;
 			compatible = "lantiq,pci-xway";
 			bus-range = <0x0 0x0>;
 			ranges = <0x2000000 0 0x8000000 0x8000000 0 0x2000000	/* pci memory */
-				  0x1000000 0 0x00000000 0xAE00000 0 0x200000>; /* io space */
+				  0x1000000 0 0x00000000 0xae00000 0 0x200000>; /* io space */
 			reg = <0x7000000 0x8000		/* config space */
-				0xE105400 0x400>;	/* pci bridge */
+				0xe105400 0x400>;	/* pci bridge */
 		};
 	};
 };
diff --git a/arch/mips/boot/dts/lantiq/easy50712.dts b/arch/mips/boot/dts/lantiq/easy50712.dts
index c37a33962f28..1ce20b7d05cb 100644
--- a/arch/mips/boot/dts/lantiq/easy50712.dts
+++ b/arch/mips/boot/dts/lantiq/easy50712.dts
@@ -52,14 +52,14 @@
 			};
 		};
 
-		gpio: pinmux@E100B10 {
+		gpio: pinmux@e100b10 {
 			compatible = "lantiq,danube-pinctrl";
 			pinctrl-names = "default";
 			pinctrl-0 = <&state_default>;
 
 			#gpio-cells = <2>;
 			gpio-controller;
-			reg = <0xE100B10 0xA0>;
+			reg = <0xe100b10 0xa0>;
 
 			state_default: pinmux {
 				stp {
@@ -82,26 +82,26 @@
 			};
 		};
 
-		etop@E180000 {
+		etop@e180000 {
 			compatible = "lantiq,etop-xway";
-			reg = <0xE180000 0x40000>;
+			reg = <0xe180000 0x40000>;
 			interrupt-parent = <&icu0>;
 			interrupts = <73 78>;
 			phy-mode = "rmii";
 			mac-address = [ 00 11 22 33 44 55 ];
 		};
 
-		stp0: stp@E100BB0 {
+		stp0: stp@e100bb0 {
 			#gpio-cells = <2>;
 			compatible = "lantiq,gpio-stp-xway";
 			gpio-controller;
-			reg = <0xE100BB0 0x40>;
+			reg = <0xe100bb0 0x40>;
 
 			lantiq,shadow = <0xfff>;
 			lantiq,groups = <0x3>;
 		};
 
-		pci@E105400 {
+		pci@e105400 {
 			lantiq,bus-clock = <33333333>;
 			interrupt-map-mask = <0xf800 0x0 0x0 0x7>;
 			interrupt-map = <
-- 
2.11.0

[RESEND PATCH 02/14] MIPS: dts: Add aliases node for lantiq danube serial

[Songjun Wu]

Previous implementation uses a hard-coded register value to check
if the current serial entity is the console entity.
Now the lantiq serial driver uses the aliases for the index of the
serial port.
The lantiq danube serial dts are updated with aliases to support this.

Signed-off-by: Songjun Wu <songjun.wu@linux.intel.com>
---

 arch/mips/boot/dts/lantiq/danube.dtsi   | 2 +-
 arch/mips/boot/dts/lantiq/easy50712.dts | 4 ++++
 2 files changed, 5 insertions(+), 1 deletion(-)

diff --git a/arch/mips/boot/dts/lantiq/danube.dtsi b/arch/mips/boot/dts/lantiq/danube.dtsi
index 510be63c8bdf..73746d7577d7 100644
--- a/arch/mips/boot/dts/lantiq/danube.dtsi
+++ b/arch/mips/boot/dts/lantiq/danube.dtsi
@@ -74,7 +74,7 @@
 			reg = <0xe100a00 0x100>;
 		};
 
-		serial@e100c00 {
+		asc1: serial@e100c00 {
 			compatible = "lantiq,asc";
 			reg = <0xe100c00 0x400>;
 			interrupt-parent = <&icu0>;
diff --git a/arch/mips/boot/dts/lantiq/easy50712.dts b/arch/mips/boot/dts/lantiq/easy50712.dts
index 1ce20b7d05cb..452860ca1868 100644
--- a/arch/mips/boot/dts/lantiq/easy50712.dts
+++ b/arch/mips/boot/dts/lantiq/easy50712.dts
@@ -4,6 +4,10 @@
 /include/ "danube.dtsi"
 
 / {
+	aliases {
+		serial0 = &asc1;
+	};
+
 	chosen {
 		bootargs = "console=ttyLTQ0,115200 init=/etc/preinit";
 	};
-- 
2.11.0

[RESEND PATCH 14/14] dt-bindings: serial: lantiq: Add optional properties for CCF

[Songjun Wu]

Clocks and clock-names are updated in device tree binding.

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Songjun Wu <songjun.wu@linux.intel.com>
---

 Documentation/devicetree/bindings/serial/lantiq_asc.txt | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/Documentation/devicetree/bindings/serial/lantiq_asc.txt b/Documentation/devicetree/bindings/serial/lantiq_asc.txt
index 3acbd309ab9d..40e81a5818f6 100644
--- a/Documentation/devicetree/bindings/serial/lantiq_asc.txt
+++ b/Documentation/devicetree/bindings/serial/lantiq_asc.txt
@@ -6,8 +6,23 @@ Required properties:
 - interrupts: the 3 (tx rx err) interrupt numbers. The interrupt specifier
   depends on the interrupt-parent interrupt controller.
 
+Optional properties:
+- clocks: Should contain frequency clock and gate clock
+- clock-names: Should be "freq" and "asc"
+
 Example:
 
+asc0: serial@16600000 {
+	compatible = "lantiq,asc";
+	reg = <0x16600000 0x100000>;
+	interrupt-parent = <&gic>;
+	interrupts = <GIC_SHARED 103 IRQ_TYPE_LEVEL_HIGH>,
+		<GIC_SHARED 105 IRQ_TYPE_LEVEL_HIGH>,
+		<GIC_SHARED 106 IRQ_TYPE_LEVEL_HIGH>;
+	clocks = <&cgu CLK_SSX4>, <&cgu GCLK_UART>;
+	clock-names = "freq", "asc";
+};
+
 asc1: serial@e100c00 {
 	compatible = "lantiq,asc";
 	reg = <0xE100C00 0x400>;
-- 
2.11.0