diff options
Diffstat (limited to 'arch/mips')
| -rw-r--r-- | arch/mips/include/asm/mach-rc32434/gpio.h | 2 | ||||
| -rw-r--r-- | arch/mips/include/asm/mach-rc32434/rb.h | 14 | ||||
| -rw-r--r-- | arch/mips/include/asm/time.h | 2 | ||||
| -rw-r--r-- | arch/mips/kernel/csrc-r4k.c | 2 | ||||
| -rw-r--r-- | arch/mips/mm/sc-ip22.c | 2 | ||||
| -rw-r--r-- | arch/mips/mti-malta/malta-amon.c | 6 | ||||
| -rw-r--r-- | arch/mips/rb532/devices.c | 2 | ||||
| -rw-r--r-- | arch/mips/rb532/gpio.c | 193 |
8 files changed, 90 insertions, 133 deletions
diff --git a/arch/mips/include/asm/mach-rc32434/gpio.h b/arch/mips/include/asm/mach-rc32434/gpio.h index c8e554e..b5cf645 100644 --- a/arch/mips/include/asm/mach-rc32434/gpio.h +++ b/arch/mips/include/asm/mach-rc32434/gpio.h @@ -84,5 +84,7 @@ extern void set_434_reg(unsigned reg_offs, unsigned bit, unsigned len, unsigned extern unsigned get_434_reg(unsigned reg_offs); extern void set_latch_u5(unsigned char or_mask, unsigned char nand_mask); extern unsigned char get_latch_u5(void); +extern void rb532_gpio_set_ilevel(int bit, unsigned gpio); +extern void rb532_gpio_set_istat(int bit, unsigned gpio); #endif /* _RC32434_GPIO_H_ */ diff --git a/arch/mips/include/asm/mach-rc32434/rb.h b/arch/mips/include/asm/mach-rc32434/rb.h index 79e8ef6..f25a849 100644 --- a/arch/mips/include/asm/mach-rc32434/rb.h +++ b/arch/mips/include/asm/mach-rc32434/rb.h @@ -40,12 +40,14 @@ #define BTCS 0x010040 #define BTCOMPARE 0x010044 #define GPIOBASE 0x050000 -#define GPIOCFG 0x050004 -#define GPIOD 0x050008 -#define GPIOILEVEL 0x05000C -#define GPIOISTAT 0x050010 -#define GPIONMIEN 0x050014 -#define IMASK6 0x038038 +/* Offsets relative to GPIOBASE */ +#define GPIOFUNC 0x00 +#define GPIOCFG 0x04 +#define GPIOD 0x08 +#define GPIOILEVEL 0x0C +#define GPIOISTAT 0x10 +#define GPIONMIEN 0x14 +#define IMASK6 0x38 #define LO_WPX (1 << 0) #define LO_ALE (1 << 1) #define LO_CLE (1 << 2) diff --git a/arch/mips/include/asm/time.h b/arch/mips/include/asm/time.h index d3bd5c5..9601ea9 100644 --- a/arch/mips/include/asm/time.h +++ b/arch/mips/include/asm/time.h @@ -63,7 +63,7 @@ static inline int mips_clockevent_init(void) /* * Initialize the count register as a clocksource */ -#ifdef CONFIG_CEVT_R4K +#ifdef CONFIG_CSRC_R4K extern int init_mips_clocksource(void); #else static inline int init_mips_clocksource(void) diff --git a/arch/mips/kernel/csrc-r4k.c b/arch/mips/kernel/csrc-r4k.c index 86e026f..74fb745 100644 --- a/arch/mips/kernel/csrc-r4k.c +++ b/arch/mips/kernel/csrc-r4k.c @@ -27,7 +27,7 @@ int __init init_mips_clocksource(void) if (!cpu_has_counter || !mips_hpt_frequency) return -ENXIO; - /* Calclate a somewhat reasonable rating value */ + /* Calculate a somewhat reasonable rating value */ clocksource_mips.rating = 200 + mips_hpt_frequency / 10000000; clocksource_set_clock(&clocksource_mips, mips_hpt_frequency); diff --git a/arch/mips/mm/sc-ip22.c b/arch/mips/mm/sc-ip22.c index 1f602a1..13adb57 100644 --- a/arch/mips/mm/sc-ip22.c +++ b/arch/mips/mm/sc-ip22.c @@ -161,7 +161,7 @@ static inline int __init indy_sc_probe(void) /* XXX Check with wje if the Indy caches can differenciate between writeback + invalidate and just invalidate. */ -struct bcache_ops indy_sc_ops = { +static struct bcache_ops indy_sc_ops = { .bc_enable = indy_sc_enable, .bc_disable = indy_sc_disable, .bc_wback_inv = indy_sc_wback_invalidate, diff --git a/arch/mips/mti-malta/malta-amon.c b/arch/mips/mti-malta/malta-amon.c index 96236bf..df9e526 100644 --- a/arch/mips/mti-malta/malta-amon.c +++ b/arch/mips/mti-malta/malta-amon.c @@ -22,9 +22,9 @@ #include <linux/init.h> #include <linux/smp.h> -#include <asm-mips/addrspace.h> -#include <asm-mips/mips-boards/launch.h> -#include <asm-mips/mipsmtregs.h> +#include <asm/addrspace.h> +#include <asm/mips-boards/launch.h> +#include <asm/mipsmtregs.h> int amon_cpu_avail(int cpu) { diff --git a/arch/mips/rb532/devices.c b/arch/mips/rb532/devices.c index 2f22d71..c1c2918 100644 --- a/arch/mips/rb532/devices.c +++ b/arch/mips/rb532/devices.c @@ -118,7 +118,7 @@ static struct platform_device cf_slot0 = { /* Resources and device for NAND */ static int rb532_dev_ready(struct mtd_info *mtd) { - return readl(IDT434_REG_BASE + GPIOD) & GPIO_RDY; + return gpio_get_value(GPIO_RDY); } static void rb532_cmd_ctrl(struct mtd_info *mtd, int cmd, unsigned int ctrl) diff --git a/arch/mips/rb532/gpio.c b/arch/mips/rb532/gpio.c index 70c4a67..0e84c8a 100644 --- a/arch/mips/rb532/gpio.c +++ b/arch/mips/rb532/gpio.c @@ -39,10 +39,6 @@ struct rb532_gpio_chip { struct gpio_chip chip; void __iomem *regbase; - void (*set_int_level)(struct gpio_chip *chip, unsigned offset, int value); - int (*get_int_level)(struct gpio_chip *chip, unsigned offset); - void (*set_int_status)(struct gpio_chip *chip, unsigned offset, int value); - int (*get_int_status)(struct gpio_chip *chip, unsigned offset); }; struct mpmc_device dev3; @@ -111,15 +107,47 @@ unsigned char get_latch_u5(void) } EXPORT_SYMBOL(get_latch_u5); +/* rb532_set_bit - sanely set a bit + * + * bitval: new value for the bit + * offset: bit index in the 4 byte address range + * ioaddr: 4 byte aligned address being altered + */ +static inline void rb532_set_bit(unsigned bitval, + unsigned offset, void __iomem *ioaddr) +{ + unsigned long flags; + u32 val; + + bitval = !!bitval; /* map parameter to {0,1} */ + + local_irq_save(flags); + + val = readl(ioaddr); + val &= ~( ~bitval << offset ); /* unset bit if bitval == 0 */ + val |= ( bitval << offset ); /* set bit if bitval == 1 */ + writel(val, ioaddr); + + local_irq_restore(flags); +} + +/* rb532_get_bit - read a bit + * + * returns the boolean state of the bit, which may be > 1 + */ +static inline int rb532_get_bit(unsigned offset, void __iomem *ioaddr) +{ + return (readl(ioaddr) & (1 << offset)); +} + /* * Return GPIO level */ static int rb532_gpio_get(struct gpio_chip *chip, unsigned offset) { - u32 mask = 1 << offset; struct rb532_gpio_chip *gpch; gpch = container_of(chip, struct rb532_gpio_chip, chip); - return readl(gpch->regbase + GPIOD) & mask; + return rb532_get_bit(offset, gpch->regbase + GPIOD); } /* @@ -128,23 +156,10 @@ static int rb532_gpio_get(struct gpio_chip *chip, unsigned offset) static void rb532_gpio_set(struct gpio_chip *chip, unsigned offset, int value) { - unsigned long flags; - u32 mask = 1 << offset; - u32 tmp; struct rb532_gpio_chip *gpch; - void __iomem *gpvr; gpch = container_of(chip, struct rb532_gpio_chip, chip); - gpvr = gpch->regbase + GPIOD; - - local_irq_save(flags); - tmp = readl(gpvr); - if (value) - tmp |= mask; - else - tmp &= ~mask; - writel(tmp, gpvr); - local_irq_restore(flags); + rb532_set_bit(value, offset, gpch->regbase + GPIOD); } /* @@ -152,21 +167,14 @@ static void rb532_gpio_set(struct gpio_chip *chip, */ static int rb532_gpio_direction_input(struct gpio_chip *chip, unsigned offset) { - unsigned long flags; - u32 mask = 1 << offset; - u32 value; struct rb532_gpio_chip *gpch; - void __iomem *gpdr; gpch = container_of(chip, struct rb532_gpio_chip, chip); - gpdr = gpch->regbase + GPIOCFG; - local_irq_save(flags); - value = readl(gpdr); - value &= ~mask; - writel(value, gpdr); - local_irq_restore(flags); + if (rb532_get_bit(offset, gpch->regbase + GPIOFUNC)) + return 1; /* alternate function, GPIOCFG is ignored */ + rb532_set_bit(0, offset, gpch->regbase + GPIOCFG); return 0; } @@ -176,117 +184,60 @@ static int rb532_gpio_direction_input(struct gpio_chip *chip, unsigned offset) static int rb532_gpio_direction_output(struct gpio_chip *chip, unsigned offset, int value) { - unsigned long flags; - u32 mask = 1 << offset; - u32 tmp; struct rb532_gpio_chip *gpch; - void __iomem *gpdr; gpch = container_of(chip, struct rb532_gpio_chip, chip); - writel(mask, gpch->regbase + GPIOD); - gpdr = gpch->regbase + GPIOCFG; - local_irq_save(flags); - tmp = readl(gpdr); - tmp |= mask; - writel(tmp, gpdr); - local_irq_restore(flags); + if (rb532_get_bit(offset, gpch->regbase + GPIOFUNC)) + return 1; /* alternate function, GPIOCFG is ignored */ + /* set the initial output value */ + rb532_set_bit(value, offset, gpch->regbase + GPIOD); + + rb532_set_bit(1, offset, gpch->regbase + GPIOCFG); return 0; } -/* - * Set the GPIO interrupt level - */ -static void rb532_gpio_set_int_level(struct gpio_chip *chip, - unsigned offset, int value) -{ - unsigned long flags; - u32 mask = 1 << offset; - u32 tmp; - struct rb532_gpio_chip *gpch; - void __iomem *gpil; - - gpch = container_of(chip, struct rb532_gpio_chip, chip); - gpil = gpch->regbase + GPIOILEVEL; - - local_irq_save(flags); - tmp = readl(gpil); - if (value) - tmp |= mask; - else - tmp &= ~mask; - writel(tmp, gpil); - local_irq_restore(flags); -} +static struct rb532_gpio_chip rb532_gpio_chip[] = { + [0] = { + .chip = { + .label = "gpio0", + .direction_input = rb532_gpio_direction_input, + .direction_output = rb532_gpio_direction_output, + .get = rb532_gpio_get, + .set = rb532_gpio_set, + .base = 0, + .ngpio = 32, + }, + }, +}; /* - * Get the GPIO interrupt level + * Set GPIO interrupt level */ -static int rb532_gpio_get_int_level(struct gpio_chip *chip, unsigned offset) +void rb532_gpio_set_ilevel(int bit, unsigned gpio) { - u32 mask = 1 << offset; - struct rb532_gpio_chip *gpch; - - gpch = container_of(chip, struct rb532_gpio_chip, chip); - return readl(gpch->regbase + GPIOILEVEL) & mask; + rb532_set_bit(bit, gpio, rb532_gpio_chip->regbase + GPIOILEVEL); } +EXPORT_SYMBOL(rb532_gpio_set_ilevel); /* - * Set the GPIO interrupt status + * Set GPIO interrupt status */ -static void rb532_gpio_set_int_status(struct gpio_chip *chip, - unsigned offset, int value) +void rb532_gpio_set_istat(int bit, unsigned gpio) { - unsigned long flags; - u32 mask = 1 << offset; - u32 tmp; - struct rb532_gpio_chip *gpch; - void __iomem *gpis; - - gpch = container_of(chip, struct rb532_gpio_chip, chip); - gpis = gpch->regbase + GPIOISTAT; - - local_irq_save(flags); - tmp = readl(gpis); - if (value) - tmp |= mask; - else - tmp &= ~mask; - writel(tmp, gpis); - local_irq_restore(flags); + rb532_set_bit(bit, gpio, rb532_gpio_chip->regbase + GPIOISTAT); } +EXPORT_SYMBOL(rb532_gpio_set_istat); /* - * Get the GPIO interrupt status + * Configure GPIO alternate function */ -static int rb532_gpio_get_int_status(struct gpio_chip *chip, unsigned offset) +static void rb532_gpio_set_func(int bit, unsigned gpio) { - u32 mask = 1 << offset; - struct rb532_gpio_chip *gpch; - - gpch = container_of(chip, struct rb532_gpio_chip, chip); - return readl(gpch->regbase + GPIOISTAT) & mask; + rb532_set_bit(bit, gpio, rb532_gpio_chip->regbase + GPIOFUNC); } -static struct rb532_gpio_chip rb532_gpio_chip[] = { - [0] = { - .chip = { - .label = "gpio0", - .direction_input = rb532_gpio_direction_input, - .direction_output = rb532_gpio_direction_output, - .get = rb532_gpio_get, - .set = rb532_gpio_set, - .base = 0, - .ngpio = 32, - }, - .get_int_level = rb532_gpio_get_int_level, - .set_int_level = rb532_gpio_set_int_level, - .get_int_status = rb532_gpio_get_int_status, - .set_int_status = rb532_gpio_set_int_status, - }, -}; - int __init rb532_gpio_init(void) { struct resource *r; @@ -310,9 +261,11 @@ int __init rb532_gpio_init(void) return -ENXIO; } - /* Set the interrupt status and level for the CF pin */ - rb532_gpio_set_int_level(&rb532_gpio_chip->chip, CF_GPIO_NUM, 1); - rb532_gpio_set_int_status(&rb532_gpio_chip->chip, CF_GPIO_NUM, 0); + /* configure CF_GPIO_NUM as CFRDY IRQ source */ + rb532_gpio_set_func(0, CF_GPIO_NUM); + rb532_gpio_direction_input(&rb532_gpio_chip->chip, CF_GPIO_NUM); + rb532_gpio_set_ilevel(1, CF_GPIO_NUM); + rb532_gpio_set_istat(0, CF_GPIO_NUM); return 0; } |