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authorGuanXuetao <gxt@mprc.pku.edu.cn>2011-01-15 18:19:35 +0800
committerGuanXuetao <gxt@mprc.pku.edu.cn>2011-03-17 09:19:10 +0800
commit752bcb4d02ccfd5e7a8d810424154169b4cca8ae (patch)
treed435061fe9405f70d51aef55392062460515ca30 /arch/unicore32/include
parent02b2ee16cc31df2b23d6f6c68a597d947f6c10e8 (diff)
unicore32 core architecture: interrupts ang gpio handling
This patch implements interrupts and gpio handling. UniCore32 has 9 gpio interrupt sources. And gpio device operations are also here. Signed-off-by: Guan Xuetao <gxt@mprc.pku.edu.cn>
Diffstat (limited to 'arch/unicore32/include')
-rw-r--r--arch/unicore32/include/asm/gpio.h103
-rw-r--r--arch/unicore32/include/asm/irq.h107
-rw-r--r--arch/unicore32/include/asm/irqflags.h53
3 files changed, 263 insertions, 0 deletions
diff --git a/arch/unicore32/include/asm/gpio.h b/arch/unicore32/include/asm/gpio.h
new file mode 100644
index 00000000000..3aaa41e9e41
--- /dev/null
+++ b/arch/unicore32/include/asm/gpio.h
@@ -0,0 +1,103 @@
+/*
+ * linux/arch/unicore32/include/asm/gpio.h
+ *
+ * Code specific to PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * 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.
+ */
+
+#ifndef __UNICORE_GPIO_H__
+#define __UNICORE_GPIO_H__
+
+#include <asm/irq.h>
+#include <mach/hardware.h>
+#include <asm-generic/gpio.h>
+
+#define GPI_OTP_INT 0
+#define GPI_PCI_INTA 1
+#define GPI_PCI_INTB 2
+#define GPI_PCI_INTC 3
+#define GPI_PCI_INTD 4
+#define GPI_BAT_DET 5
+#define GPI_SD_CD 6
+#define GPI_SOFF_REQ 7
+#define GPI_SD_WP 8
+#define GPI_LCD_CASE_OFF 9
+#define GPO_WIFI_EN 10
+#define GPO_HDD_LED 11
+#define GPO_VGA_EN 12
+#define GPO_LCD_EN 13
+#define GPO_LED_DATA 14
+#define GPO_LED_CLK 15
+#define GPO_CAM_PWR_EN 16
+#define GPO_LCD_VCC_EN 17
+#define GPO_SOFT_OFF 18
+#define GPO_BT_EN 19
+#define GPO_FAN_ON 20
+#define GPO_SPKR 21
+#define GPO_SET_V1 23
+#define GPO_SET_V2 24
+#define GPO_CPU_HEALTH 25
+#define GPO_LAN_SEL 26
+
+#ifdef CONFIG_PUV3_NB0916
+#define GPI_BTN_TOUCH 14
+#define GPIO_IN 0x000043ff /* 1 for input */
+#define GPIO_OUT 0x0fffbc00 /* 1 for output */
+#endif /* CONFIG_PUV3_NB0916 */
+
+#ifdef CONFIG_PUV3_SMW0919
+#define GPIO_IN 0x000003ff /* 1 for input */
+#define GPIO_OUT 0x0ffffc00 /* 1 for output */
+#endif /* CONFIG_PUV3_SMW0919 */
+
+#ifdef CONFIG_PUV3_DB0913
+#define GPIO_IN 0x000001df /* 1 for input */
+#define GPIO_OUT 0x03fee800 /* 1 for output */
+#endif /* CONFIG_PUV3_DB0913 */
+
+#define GPIO_DIR (~((GPIO_IN) | 0xf0000000))
+ /* 0 input, 1 output */
+
+static inline int gpio_get_value(unsigned gpio)
+{
+ if (__builtin_constant_p(gpio) && (gpio <= GPIO_MAX))
+ return GPIO_GPLR & GPIO_GPIO(gpio);
+ else
+ return __gpio_get_value(gpio);
+}
+
+static inline void gpio_set_value(unsigned gpio, int value)
+{
+ if (__builtin_constant_p(gpio) && (gpio <= GPIO_MAX))
+ if (value)
+ GPIO_GPSR = GPIO_GPIO(gpio);
+ else
+ GPIO_GPCR = GPIO_GPIO(gpio);
+ else
+ __gpio_set_value(gpio, value);
+}
+
+#define gpio_cansleep __gpio_cansleep
+
+static inline unsigned gpio_to_irq(unsigned gpio)
+{
+ if ((gpio < IRQ_GPIOHIGH) && (FIELD(1, 1, gpio) & GPIO_GPIR))
+ return IRQ_GPIOLOW0 + gpio;
+ else
+ return IRQ_GPIO0 + gpio;
+}
+
+static inline unsigned irq_to_gpio(unsigned irq)
+{
+ if (irq < IRQ_GPIOHIGH)
+ return irq - IRQ_GPIOLOW0;
+ else
+ return irq - IRQ_GPIO0;
+}
+
+#endif /* __UNICORE_GPIO_H__ */
diff --git a/arch/unicore32/include/asm/irq.h b/arch/unicore32/include/asm/irq.h
new file mode 100644
index 00000000000..ade8bb87111
--- /dev/null
+++ b/arch/unicore32/include/asm/irq.h
@@ -0,0 +1,107 @@
+/*
+ * linux/arch/unicore32/include/asm/irq.h
+ *
+ * Code specific to PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * 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.
+ */
+#ifndef __UNICORE_IRQ_H__
+#define __UNICORE_IRQ_H__
+
+#include <asm-generic/irq.h>
+
+#define IRQ_GPIOLOW0 0x00
+#define IRQ_GPIOLOW1 0x01
+#define IRQ_GPIOLOW2 0x02
+#define IRQ_GPIOLOW3 0x03
+#define IRQ_GPIOLOW4 0x04
+#define IRQ_GPIOLOW5 0x05
+#define IRQ_GPIOLOW6 0x06
+#define IRQ_GPIOLOW7 0x07
+#define IRQ_GPIOHIGH 0x08
+#define IRQ_USB 0x09
+#define IRQ_SDC 0x0a
+#define IRQ_AC97 0x0b
+#define IRQ_SATA 0x0c
+#define IRQ_MME 0x0d
+#define IRQ_PCI_BRIDGE 0x0e
+#define IRQ_DDR 0x0f
+#define IRQ_SPI 0x10
+#define IRQ_UNIGFX 0x11
+#define IRQ_I2C 0x11
+#define IRQ_UART1 0x12
+#define IRQ_UART0 0x13
+#define IRQ_UMAL 0x14
+#define IRQ_NAND 0x15
+#define IRQ_PS2_KBD 0x16
+#define IRQ_PS2_AUX 0x17
+#define IRQ_DMA 0x18
+#define IRQ_DMAERR 0x19
+#define IRQ_TIMER0 0x1a
+#define IRQ_TIMER1 0x1b
+#define IRQ_TIMER2 0x1c
+#define IRQ_TIMER3 0x1d
+#define IRQ_RTC 0x1e
+#define IRQ_RTCAlarm 0x1f
+
+#define IRQ_GPIO0 0x20
+#define IRQ_GPIO1 0x21
+#define IRQ_GPIO2 0x22
+#define IRQ_GPIO3 0x23
+#define IRQ_GPIO4 0x24
+#define IRQ_GPIO5 0x25
+#define IRQ_GPIO6 0x26
+#define IRQ_GPIO7 0x27
+#define IRQ_GPIO8 0x28
+#define IRQ_GPIO9 0x29
+#define IRQ_GPIO10 0x2a
+#define IRQ_GPIO11 0x2b
+#define IRQ_GPIO12 0x2c
+#define IRQ_GPIO13 0x2d
+#define IRQ_GPIO14 0x2e
+#define IRQ_GPIO15 0x2f
+#define IRQ_GPIO16 0x30
+#define IRQ_GPIO17 0x31
+#define IRQ_GPIO18 0x32
+#define IRQ_GPIO19 0x33
+#define IRQ_GPIO20 0x34
+#define IRQ_GPIO21 0x35
+#define IRQ_GPIO22 0x36
+#define IRQ_GPIO23 0x37
+#define IRQ_GPIO24 0x38
+#define IRQ_GPIO25 0x39
+#define IRQ_GPIO26 0x3a
+#define IRQ_GPIO27 0x3b
+
+#ifdef CONFIG_ARCH_FPGA
+#define IRQ_PCIINTA IRQ_GPIOLOW2
+#define IRQ_PCIINTB IRQ_GPIOLOW1
+#define IRQ_PCIINTC IRQ_GPIOLOW0
+#define IRQ_PCIINTD IRQ_GPIOLOW6
+#endif
+
+#if defined(CONFIG_PUV3_DB0913) || defined(CONFIG_PUV3_NB0916) \
+ || defined(CONFIG_PUV3_SMW0919)
+#define IRQ_PCIINTA IRQ_GPIOLOW1
+#define IRQ_PCIINTB IRQ_GPIOLOW2
+#define IRQ_PCIINTC IRQ_GPIOLOW3
+#define IRQ_PCIINTD IRQ_GPIOLOW4
+#endif
+
+#define IRQ_SD_CD IRQ_GPIO6 /* falling or rising trigger */
+
+#ifndef __ASSEMBLY__
+struct irqaction;
+struct pt_regs;
+extern void migrate_irqs(void);
+
+extern void asm_do_IRQ(unsigned int, struct pt_regs *);
+
+#endif
+
+#endif
+
diff --git a/arch/unicore32/include/asm/irqflags.h b/arch/unicore32/include/asm/irqflags.h
new file mode 100644
index 00000000000..6d8a28dfdba
--- /dev/null
+++ b/arch/unicore32/include/asm/irqflags.h
@@ -0,0 +1,53 @@
+/*
+ * linux/arch/unicore32/include/asm/irqflags.h
+ *
+ * Code specific to PKUnity SoC and UniCore ISA
+ *
+ * Copyright (C) 2001-2010 GUAN Xue-tao
+ *
+ * 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.
+ */
+#ifndef __UNICORE_IRQFLAGS_H__
+#define __UNICORE_IRQFLAGS_H__
+
+#ifdef __KERNEL__
+
+#include <asm/ptrace.h>
+
+#define ARCH_IRQ_DISABLED (PRIV_MODE | PSR_I_BIT)
+#define ARCH_IRQ_ENABLED (PRIV_MODE)
+
+/*
+ * Save the current interrupt enable state.
+ */
+static inline unsigned long arch_local_save_flags(void)
+{
+ unsigned long temp;
+
+ asm volatile("mov %0, asr" : "=r" (temp) : : "memory", "cc");
+
+ return temp & PSR_c;
+}
+
+/*
+ * restore saved IRQ state
+ */
+static inline void arch_local_irq_restore(unsigned long flags)
+{
+ unsigned long temp;
+
+ asm volatile(
+ "mov %0, asr\n"
+ "mov.a asr, %1\n"
+ "mov.f asr, %0"
+ : "=&r" (temp)
+ : "r" (flags)
+ : "memory", "cc");
+}
+
+#include <asm-generic/irqflags.h>
+
+#endif
+#endif