[PATCH v4 05/12] ARM: EXYNOS: add support uart for EXYNOS4 and EXYNOS5
Kukjin Kim
kgene.kim at samsung.com
Wed Mar 14 10:42:11 EDT 2012
Actually, the base address of uart is different between EXYNOS4
and EXYNOS5 and this patch enables to support uart for EXYNOS4
and EXYNOS5 SoCs at runtime.
Signed-off-by: Kukjin Kim <kgene.kim at samsung.com>
---
arch/arm/mach-exynos/Makefile | 1 +
arch/arm/mach-exynos/common.c | 5 +-
arch/arm/mach-exynos/dev-uart.c | 78 +++++++++++++++++++++++
arch/arm/mach-exynos/include/mach/debug-macro.S | 9 ++-
arch/arm/mach-exynos/include/mach/irqs.h | 12 ++++
arch/arm/mach-exynos/include/mach/map.h | 20 +++---
arch/arm/mach-exynos/include/mach/uncompress.h | 17 ++++--
arch/arm/plat-s5p/Kconfig | 4 +
arch/arm/plat-s5p/Makefile | 3 +-
arch/arm/plat-samsung/include/plat/devs.h | 2 +
arch/arm/plat-samsung/include/plat/uncompress.h | 2 +
11 files changed, 135 insertions(+), 18 deletions(-)
create mode 100644 arch/arm/mach-exynos/dev-uart.c
diff --git a/arch/arm/mach-exynos/Makefile b/arch/arm/mach-exynos/Makefile
index 2117f02..f8a3770 100644
--- a/arch/arm/mach-exynos/Makefile
+++ b/arch/arm/mach-exynos/Makefile
@@ -44,6 +44,7 @@ obj-$(CONFIG_MACH_EXYNOS4_DT) += mach-exynos4-dt.o
# device support
+obj-y += dev-uart.o
obj-$(CONFIG_ARCH_EXYNOS4) += dev-audio.o
obj-$(CONFIG_EXYNOS4_DEV_AHCI) += dev-ahci.o
obj-$(CONFIG_EXYNOS4_DEV_PD) += dev-pd.o
diff --git a/arch/arm/mach-exynos/common.c b/arch/arm/mach-exynos/common.c
index 02eed29..4a82cf0 100644
--- a/arch/arm/mach-exynos/common.c
+++ b/arch/arm/mach-exynos/common.c
@@ -477,7 +477,10 @@ static void __init exynos_init_uarts(struct s3c2410_uartcfg *cfg, int no)
for (ucnt = 0; ucnt < no; ucnt++, tcfg++)
tcfg->has_fracval = 1;
- s3c24xx_init_uartdevs("exynos4210-uart", s5p_uart_resources, cfg, no);
+ if (soc_is_exynos5250())
+ s3c24xx_init_uartdevs("exynos4210-uart", exynos5_uart_resources, cfg, no);
+ else
+ s3c24xx_init_uartdevs("exynos4210-uart", exynos4_uart_resources, cfg, no);
}
static DEFINE_SPINLOCK(eint_lock);
diff --git a/arch/arm/mach-exynos/dev-uart.c b/arch/arm/mach-exynos/dev-uart.c
new file mode 100644
index 0000000..2e85c02
--- /dev/null
+++ b/arch/arm/mach-exynos/dev-uart.c
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2012 Samsung Electronics Co., Ltd.
+ * http://www.samsung.com
+ *
+ * Base EXYNOS UART resource and device definitions
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 as
+ * published by the Free Software Foundation.
+ */
+
+#include <linux/kernel.h>
+#include <linux/types.h>
+#include <linux/interrupt.h>
+#include <linux/list.h>
+#include <linux/ioport.h>
+#include <linux/platform_device.h>
+
+#include <asm/mach/arch.h>
+#include <asm/mach/irq.h>
+#include <mach/hardware.h>
+#include <mach/map.h>
+
+#include <plat/devs.h>
+
+#define EXYNOS_UART_RESOURCE(_series, _nr) \
+static struct resource exynos##_series##_uart##_nr##_resource[] = { \
+ [0] = DEFINE_RES_MEM(EXYNOS##_series##_PA_UART##_nr, EXYNOS##_series##_SZ_UART), \
+ [1] = DEFINE_RES_IRQ(EXYNOS##_series##_IRQ_UART##_nr), \
+};
+
+EXYNOS_UART_RESOURCE(4, 0)
+EXYNOS_UART_RESOURCE(4, 1)
+EXYNOS_UART_RESOURCE(4, 2)
+EXYNOS_UART_RESOURCE(4, 3)
+
+struct s3c24xx_uart_resources exynos4_uart_resources[] __initdata = {
+ [0] = {
+ .resources = exynos4_uart0_resource,
+ .nr_resources = ARRAY_SIZE(exynos4_uart0_resource),
+ },
+ [1] = {
+ .resources = exynos4_uart1_resource,
+ .nr_resources = ARRAY_SIZE(exynos4_uart1_resource),
+ },
+ [2] = {
+ .resources = exynos4_uart2_resource,
+ .nr_resources = ARRAY_SIZE(exynos4_uart2_resource),
+ },
+ [3] = {
+ .resources = exynos4_uart3_resource,
+ .nr_resources = ARRAY_SIZE(exynos4_uart3_resource),
+ },
+};
+
+EXYNOS_UART_RESOURCE(5, 0)
+EXYNOS_UART_RESOURCE(5, 1)
+EXYNOS_UART_RESOURCE(5, 2)
+EXYNOS_UART_RESOURCE(5, 3)
+
+struct s3c24xx_uart_resources exynos5_uart_resources[] __initdata = {
+ [0] = {
+ .resources = exynos5_uart0_resource,
+ .nr_resources = ARRAY_SIZE(exynos5_uart0_resource),
+ },
+ [1] = {
+ .resources = exynos5_uart1_resource,
+ .nr_resources = ARRAY_SIZE(exynos5_uart0_resource),
+ },
+ [2] = {
+ .resources = exynos5_uart2_resource,
+ .nr_resources = ARRAY_SIZE(exynos5_uart2_resource),
+ },
+ [3] = {
+ .resources = exynos5_uart3_resource,
+ .nr_resources = ARRAY_SIZE(exynos5_uart3_resource),
+ },
+};
diff --git a/arch/arm/mach-exynos/include/mach/debug-macro.S b/arch/arm/mach-exynos/include/mach/debug-macro.S
index 6cacf16..6c857ff 100644
--- a/arch/arm/mach-exynos/include/mach/debug-macro.S
+++ b/arch/arm/mach-exynos/include/mach/debug-macro.S
@@ -21,8 +21,13 @@
*/
.macro addruart, rp, rv, tmp
- ldr \rp, = S3C_PA_UART
- ldr \rv, = S3C_VA_UART
+ mov \rp, #0x10000000
+ ldr \rp, [\rp, #0x0]
+ and \rp, \rp, #0xf00000
+ teq \rp, #0x500000 @@ EXYNOS5
+ ldreq \rp, =EXYNOS5_PA_UART
+ movne \rp, #EXYNOS4_PA_UART @@ EXYNOS4
+ ldr \rv, =S3C_VA_UART
#if CONFIG_DEBUG_S3C_UART != 0
add \rp, \rp, #(0x10000 * CONFIG_DEBUG_S3C_UART)
add \rv, \rv, #(0x10000 * CONFIG_DEBUG_S3C_UART)
diff --git a/arch/arm/mach-exynos/include/mach/irqs.h b/arch/arm/mach-exynos/include/mach/irqs.h
index 1d401c9..f78070e 100644
--- a/arch/arm/mach-exynos/include/mach/irqs.h
+++ b/arch/arm/mach-exynos/include/mach/irqs.h
@@ -173,4 +173,16 @@
/* Set the default NR_IRQS */
#define NR_IRQS (IRQ_TIMER_BASE + IRQ_TIMER_COUNT)
+#define EXYNOS4_IRQ_UART0 IRQ_SPI(52)
+#define EXYNOS4_IRQ_UART1 IRQ_SPI(53)
+#define EXYNOS4_IRQ_UART2 IRQ_SPI(54)
+#define EXYNOS4_IRQ_UART3 IRQ_SPI(55)
+#define EXYNOS4_IRQ_UART4 IRQ_SPI(56)
+
+#define EXYNOS5_IRQ_UART0 IRQ_SPI(51)
+#define EXYNOS5_IRQ_UART1 IRQ_SPI(52)
+#define EXYNOS5_IRQ_UART2 IRQ_SPI(53)
+#define EXYNOS5_IRQ_UART3 IRQ_SPI(54)
+#define EXYNOS5_IRQ_UART4 IRQ_SPI(55)
+
#endif /* __ASM_ARCH_IRQS_H */
diff --git a/arch/arm/mach-exynos/include/mach/map.h b/arch/arm/mach-exynos/include/mach/map.h
index 2ad4e9c..ea513c6 100644
--- a/arch/arm/mach-exynos/include/mach/map.h
+++ b/arch/arm/mach-exynos/include/mach/map.h
@@ -153,7 +153,6 @@
#define S3C_PA_IIC7 EXYNOS4_PA_IIC(7)
#define S3C_PA_RTC EXYNOS4_PA_RTC
#define S3C_PA_WDT EXYNOS4_PA_WATCHDOG
-#define S3C_PA_UART EXYNOS4_PA_UART
#define S3C_PA_SPI0 EXYNOS4_PA_SPI0
#define S3C_PA_SPI1 EXYNOS4_PA_SPI1
#define S3C_PA_SPI2 EXYNOS4_PA_SPI2
@@ -182,15 +181,18 @@
/* Compatibility UART */
-#define S3C_VA_UARTx(x) (S3C_VA_UART + ((x) * S3C_UART_OFFSET))
+#define EXYNOS4_PA_UART0 0x13800000
+#define EXYNOS4_PA_UART1 0x13810000
+#define EXYNOS4_PA_UART2 0x13820000
+#define EXYNOS4_PA_UART3 0x13830000
+#define EXYNOS4_SZ_UART SZ_256
-#define S5P_PA_UART(x) (EXYNOS4_PA_UART + ((x) * S3C_UART_OFFSET))
-#define S5P_PA_UART0 S5P_PA_UART(0)
-#define S5P_PA_UART1 S5P_PA_UART(1)
-#define S5P_PA_UART2 S5P_PA_UART(2)
-#define S5P_PA_UART3 S5P_PA_UART(3)
-#define S5P_PA_UART4 S5P_PA_UART(4)
+#define EXYNOS5_PA_UART0 0x12C00000
+#define EXYNOS5_PA_UART1 0x12C10000
+#define EXYNOS5_PA_UART2 0x12C20000
+#define EXYNOS5_PA_UART3 0x12C30000
+#define EXYNOS5_SZ_UART SZ_256
-#define S5P_SZ_UART SZ_256
+#define S3C_VA_UARTx(x) (S3C_VA_UART + ((x) * S3C_UART_OFFSET))
#endif /* __ASM_ARCH_MAP_H */
diff --git a/arch/arm/mach-exynos/include/mach/uncompress.h b/arch/arm/mach-exynos/include/mach/uncompress.h
index 21d97bc..493f4f3 100644
--- a/arch/arm/mach-exynos/include/mach/uncompress.h
+++ b/arch/arm/mach-exynos/include/mach/uncompress.h
@@ -1,9 +1,8 @@
-/* linux/arch/arm/mach-exynos4/include/mach/uncompress.h
- *
- * Copyright (c) 2010-2011 Samsung Electronics Co., Ltd.
+/*
+ * Copyright (c) 2010-2012 Samsung Electronics Co., Ltd.
* http://www.samsung.com
*
- * EXYNOS4 - uncompress code
+ * EXYNOS - uncompress code
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
@@ -13,12 +12,20 @@
#ifndef __ASM_ARCH_UNCOMPRESS_H
#define __ASM_ARCH_UNCOMPRESS_H __FILE__
+#include <asm/mach-types.h>
+
#include <mach/map.h>
+
+volatile u8 *uart_base;
+
#include <plat/uncompress.h>
static void arch_detect_cpu(void)
{
- /* we do not need to do any cpu detection here at the moment. */
+ if (machine_is_smdk5250())
+ uart_base = (volatile u8 *)EXYNOS5_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT);
+ else
+ uart_base = (volatile u8 *)EXYNOS4_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT);
/*
* For preventing FIFO overrun or infinite loop of UART console,
diff --git a/arch/arm/plat-s5p/Kconfig b/arch/arm/plat-s5p/Kconfig
index 8167ce6..10e235cc7 100644
--- a/arch/arm/plat-s5p/Kconfig
+++ b/arch/arm/plat-s5p/Kconfig
@@ -40,6 +40,10 @@ config S5P_HRT
help
Use the High Resolution timer support
+config S5P_DEV_UART
+ def_bool y
+ depends on (ARCH_S5P64X0 || ARCH_S5PC100 || ARCH_S5PV210)
+
config S5P_PM
bool
help
diff --git a/arch/arm/plat-s5p/Makefile b/arch/arm/plat-s5p/Makefile
index 30d8c30..4bd8241 100644
--- a/arch/arm/plat-s5p/Makefile
+++ b/arch/arm/plat-s5p/Makefile
@@ -12,7 +12,6 @@ obj- :=
# Core files
-obj-y += dev-uart.o
obj-y += clock.o
obj-y += irq.o
obj-$(CONFIG_S5P_EXT_INT) += irq-eint.o
@@ -23,5 +22,7 @@ obj-$(CONFIG_S5P_SLEEP) += sleep.o
obj-$(CONFIG_S5P_HRT) += s5p-time.o
# devices
+
+obj-$(CONFIG_S5P_DEV_UART) += dev-uart.o
obj-$(CONFIG_S5P_DEV_MFC) += dev-mfc.o
obj-$(CONFIG_S5P_SETUP_MIPIPHY) += setup-mipiphy.o
diff --git a/arch/arm/plat-samsung/include/plat/devs.h b/arch/arm/plat-samsung/include/plat/devs.h
index 4214ea0..32cc67e 100644
--- a/arch/arm/plat-samsung/include/plat/devs.h
+++ b/arch/arm/plat-samsung/include/plat/devs.h
@@ -26,6 +26,8 @@ struct s3c24xx_uart_resources {
extern struct s3c24xx_uart_resources s3c2410_uart_resources[];
extern struct s3c24xx_uart_resources s3c64xx_uart_resources[];
extern struct s3c24xx_uart_resources s5p_uart_resources[];
+extern struct s3c24xx_uart_resources exynos4_uart_resources[];
+extern struct s3c24xx_uart_resources exynos5_uart_resources[];
extern struct platform_device *s3c24xx_uart_devs[];
extern struct platform_device *s3c24xx_uart_src[];
diff --git a/arch/arm/plat-samsung/include/plat/uncompress.h b/arch/arm/plat-samsung/include/plat/uncompress.h
index ee48e12..7e068d1 100644
--- a/arch/arm/plat-samsung/include/plat/uncompress.h
+++ b/arch/arm/plat-samsung/include/plat/uncompress.h
@@ -37,7 +37,9 @@ static void arch_detect_cpu(void);
/* how many bytes we allow into the FIFO at a time in FIFO mode */
#define FIFO_MAX (14)
+#ifdef S3C_PA_UART
#define uart_base S3C_PA_UART + (S3C_UART_OFFSET * CONFIG_S3C_LOWLEVEL_UART_PORT)
+#endif
static __inline__ void
uart_wr(unsigned int reg, unsigned int val)
--
1.7.4.4
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