rtc: dw: Make internal primitives Kconfig based

Base address, IRQ, interrupt priority as well as the instance name: all
are now Kconfig based. Thus Applying the change to quark_se and
quark_d2000 platforms. Sample code is updated as well.

Change-Id: I1c225c1b68d94b22ca10423b50a78a0ba09a27a5
Signed-off-by: Tomasz Bursztyka <tomasz.bursztyka@linux.intel.com>

arch/x86/platforms/quark_d2000/Kconfig

@@ -151,4 +151,15 @@ config WDT_DW_IRQ
 
 endif
 
+if RTC
+
+config RTC_DW
+	def_bool y
+config RTC_DW_BASE_ADDR
+	default 0xB0000400
+config RTC_DW_IRQ
+	default 2
+
+endif
+
 endif

arch/x86/platforms/quark_d2000/board.h

@@ -134,10 +134,8 @@ struct scss_interrupt {
 
 
 /* RTC */
-#define RTC_BASE_ADDR                   0xB0000400
 #define CCU_RTC_CLK_DIV_OFFSET          0x3
 #define INT_RTC_MASK			0x478
-#define INT_RTC_IRQ                     0x2
 #define CCU_RTC_PCLK_EN_SW              (1 << 11)
 
 

arch/x86/platforms/quark_se/Kconfig

@@ -176,6 +176,15 @@ config WDT_DW_IRQ
 	default 12
 endif
 
+if RTC
+config RTC_DW
+	def_bool y
+config RTC_DW_BASE_ADDR
+	default 0xB0000400
+config RTC_DW_IRQ
+	default 11
+endif
+
 config KERNEL_INIT_PRIORITY_DEFAULT
 	default 40
 

arch/x86/platforms/quark_se/board.h

@@ -225,11 +225,9 @@ struct scss_interrupt {
 #define CCU_WDT_PCLK_EN_SW     		(1 << 10)
 
 /* RTC */
-#define RTC_BASE_ADDR               	0xB0000400
 #define CCU_RTC_CLK_DIV_OFFSET		(3)
 #define SCSS_INT_RTC_MASK	        0x478
 #define CCU_RTC_PCLK_EN_SW 		(1 << 11)
-#define INT_RTC_IRQ  		        0xb
 
 /* Clock */
 #define CLOCK_PERIPHERAL_BASE_ADDR	(SCSS_REGISTER_BASE + 0x18)

drivers/rtc/Kconfig

@@ -1,3 +1,24 @@
+# Kconfig - RTC configuration options
+#
+#
+# Copyright (c) 2015 Intel Corporation
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#
+
+#
+# Real-Time Clock (RTC) options
+#
 menuconfig RTC
 	bool "Real-Time Clock"
 	default n
@@ -12,9 +33,31 @@ config RTC_DW
 	help
 	Designware RTC driver.
 
-config RTC_IRQ_PRI
-	int "RTC Interrupt Priority"
-	default 2
+config RTC_DW_DRV_NAME
+	string "Driver instance name"
+	default "RTC_DW"
+	depends on RTC_DW
 	help
-	RTC Interrupt Priority.
+	Designware RTC driver instance name
+
+config RTC_DW_BASE_ADDR
+	hex "Base address"
+	depends on RTC_DW
+	default 0x00000000
+	help
+	Base address to access RTC DesignWare controller registers
+
+config RTC_DW_IRQ
+	int "Interrupt number"
+	default 0
+	depends on RTC_DW
+	help
+	DesignWare RTC interrupt number
+
+config RTC_DW_IRQ_PRI
+	int "Interrupt priority"
+	default 2
+	depends on RTC_DW
+	help
+	DesignWare RTC interrupt priority.
 endif # RTC

drivers/rtc/rtc_dw.c

@@ -149,24 +149,28 @@ static struct rtc_driver_api funcs = {
 };
 
 /* IRQ_CONFIG needs the flags variable declared by IRQ_CONNECT_STATIC */
-IRQ_CONNECT_STATIC(rtc, INT_RTC_IRQ, CONFIG_RTC_IRQ_PRI, rtc_dw_isr, 0, 0);
+IRQ_CONNECT_STATIC(rtc, CONFIG_RTC_DW_IRQ,
+		   CONFIG_RTC_DW_IRQ_PRI, rtc_dw_isr, 0, 0);
 
 int rtc_dw_init(struct device *dev)
 {
-	IRQ_CONFIG(rtc, INT_RTC_IRQ);
-	irq_enable(INT_RTC_IRQ);
+	IRQ_CONFIG(rtc, CONFIG_RTC_DW_IRQ);
+	irq_enable(CONFIG_RTC_DW_IRQ);
+
 	SCSS_INTERRUPT->int_rtc_mask = INT_UNMASK_IA;
 	dev->driver_api = &funcs;
+
 	return DEV_OK;
 }
 
 struct rtc_dw_runtime rtc_runtime;
 
 struct rtc_dw_dev_config rtc_dev = {
-	.base_address = RTC_BASE_ADDR,
+	.base_address = CONFIG_RTC_DW_BASE_ADDR,
 };
 
-DECLARE_DEVICE_INIT_CONFIG(rtc, RTC_DRV_NAME, &rtc_dw_init, &rtc_dev);
+DECLARE_DEVICE_INIT_CONFIG(rtc, CONFIG_RTC_DW_DRV_NAME,
+			   &rtc_dw_init, &rtc_dev);
 
 SYS_DEFINE_DEVICE(rtc, &rtc_runtime, SECONDARY,
 		  CONFIG_KERNEL_INIT_PRIORITY_DEVICE);

drivers/rtc/rtc_dw.h

@@ -21,8 +21,6 @@
 #include <device.h>
 #include <rtc.h>
 
-#define RTC_DRV_NAME "rtc"
-
 #define RTC_CCVR		(0x0)
 #define RTC_CMR			(0x4)
 #define RTC_CLR			(0x8)

samples/nanokernel/apps/rtc/src/main.c

@@ -22,7 +22,7 @@
 
 
 #define ALARM (RTC_ALARM_MINUTE / 6)
-#define RTC_DRIVER "rtc"
+#define RTC_DRIVER CONFIG_RTC_DW_DRV_NAME
 
 void test_rtc_interrupt_fn(struct device *rtc_dev)
 {