ARM: shmobile: r8a73a4: add thermal driver support

You can get current thermal by
> cat /sys/class/thermal/thermal_zone?/temp

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: Magnus Damm <damm@opensource.se>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>

arch/arm/boot/dts/r8a73a4.dtsi

@@ -84,4 +84,11 @@
 				<0 56 4>, <0 57 4>;
 	};
 
+	thermal@e61f0000 {
+		compatible = "renesas,rcar-thermal";
+		reg = <0xe61f0000 0x14>, <0xe61f0100 0x38>,
+			 <0xe61f0200 0x38>, <0xe61f0300 0x38>;
+		interrupt-parent = <&gic>;
+		interrupts = <0 69 4>;
+	};
 };

arch/arm/mach-shmobile/clock-r8a73a4.c

@@ -29,6 +29,7 @@
 
 #define MPCKCR 0xe6150080
 #define SMSTPCR2 0xe6150138
+#define SMSTPCR5 0xe6150144
 
 static struct clk_mapping cpg_mapping = {
 	.phys   = CPG_BASE,
@@ -56,7 +57,12 @@ static struct clk *main_clks[] = {
 	&extal2_clk,
 };
 
-enum { MSTP217, MSTP216, MSTP207, MSTP206, MSTP204, MSTP203, MSTP_NR };
+enum {
+	MSTP217, MSTP216, MSTP207, MSTP206, MSTP204, MSTP203,
+	MSTP522,
+	MSTP_NR
+};
+
 static struct clk mstp_clks[MSTP_NR] = {
 	[MSTP204] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 4, 0), /* SCIFA0 */
 	[MSTP203] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 3, 0), /* SCIFA1 */
@@ -64,6 +70,7 @@ static struct clk mstp_clks[MSTP_NR] = {
 	[MSTP207] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 7, 0), /* SCIFB1 */
 	[MSTP216] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 16, 0), /* SCIFB2 */
 	[MSTP217] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR2, 17, 0), /* SCIFB3 */
+	[MSTP522] = SH_CLK_MSTP32(&extal2_clk, SMSTPCR5, 22, 0), /* Thermal */
 };
 
 static struct clk_lookup lookups[] = {
@@ -73,6 +80,10 @@ static struct clk_lookup lookups[] = {
 	CLKDEV_DEV_ID("sh-sci.3", &mstp_clks[MSTP207]),
 	CLKDEV_DEV_ID("sh-sci.4", &mstp_clks[MSTP216]),
 	CLKDEV_DEV_ID("sh-sci.5", &mstp_clks[MSTP217]),
+	CLKDEV_DEV_ID("rcar_thermal", &mstp_clks[MSTP522]),
+
+	/* for DT */
+	CLKDEV_DEV_ID("e61f0000.thermal", &mstp_clks[MSTP522]),
 };
 
 void __init r8a73a4_clock_init(void)

arch/arm/mach-shmobile/setup-r8a73a4.c

@@ -155,6 +155,20 @@ static const struct resource irqc1_resources[] = {
 					  &irqc##idx##_data,		\
 					  sizeof(struct renesas_irqc_config))
 
+/* Thermal0 -> Thermal2 */
+static const struct resource thermal0_resources[] = {
+	DEFINE_RES_MEM(0xe61f0000, 0x14),
+	DEFINE_RES_MEM(0xe61f0100, 0x38),
+	DEFINE_RES_MEM(0xe61f0200, 0x38),
+	DEFINE_RES_MEM(0xe61f0300, 0x38),
+	DEFINE_RES_IRQ(gic_spi(69)),
+};
+
+#define r8a73a4_register_thermal()					\
+	platform_device_register_simple("rcar_thermal", -1,		\
+					thermal0_resources,		\
+					ARRAY_SIZE(thermal0_resources))
+
 void __init r8a73a4_add_standard_devices(void)
 {
 	r8a73a4_register_scif(SCIFA0);
@@ -165,6 +179,7 @@ void __init r8a73a4_add_standard_devices(void)
 	r8a73a4_register_scif(SCIFB3);
 	r8a73a4_register_irqc(0);
 	r8a73a4_register_irqc(1);
+	r8a73a4_register_thermal();
 }
 
 #ifdef CONFIG_USE_OF