From c34002c102880bfac5b449b41e5313dcda186db8 Mon Sep 17 00:00:00 2001 From: Dan Williams Date: Wed, 26 Mar 2008 19:12:38 -0700 Subject: iop: unconditionally initialize the ATU on platforms known to be 'hosts' Platforms like iq80321 and iq80331 which may be host-bus-adapters require 'iop3xx_init_atu=y' to be specified on the kernel command line. Signed-off-by: Dan Williams --- include/asm-arm/hardware/iop3xx.h | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) (limited to 'include/asm-arm/hardware') diff --git a/include/asm-arm/hardware/iop3xx.h b/include/asm-arm/hardware/iop3xx.h index ede377ec9147..18f6937f5010 100644 --- a/include/asm-arm/hardware/iop3xx.h +++ b/include/asm-arm/hardware/iop3xx.h @@ -29,6 +29,7 @@ extern void gpio_line_config(int line, int direction); extern int gpio_line_get(int line); extern void gpio_line_set(int line, int value); extern int init_atu; +extern int iop3xx_get_init_atu(void); #endif @@ -112,14 +113,6 @@ extern int init_atu; #define IOP3XX_INIT_ATU_DISABLE -1 #define IOP3XX_INIT_ATU_ENABLE 1 -#ifdef CONFIG_IOP3XX_ATU -#define iop3xx_get_init_atu(x) (init_atu == IOP3XX_INIT_ATU_DEFAULT ?\ - IOP3XX_INIT_ATU_ENABLE : init_atu) -#else -#define iop3xx_get_init_atu(x) (init_atu == IOP3XX_INIT_ATU_DEFAULT ?\ - IOP3XX_INIT_ATU_DISABLE : init_atu) -#endif - /* Messaging Unit */ #define IOP3XX_IMR0 (volatile u32 *)IOP3XX_REG_ADDR(0x0310) #define IOP3XX_IMR1 (volatile u32 *)IOP3XX_REG_ADDR(0x0314) -- cgit v1.2.3 From b43a9e60873ebe16502061961ca3f3b7bc6f69d2 Mon Sep 17 00:00:00 2001 From: Dmitry Baryshkov Date: Thu, 10 Apr 2008 13:36:53 +0100 Subject: [ARM] 4962/1: Introduce standard gpio interface for Scoop2. This deprecates old set/reset_scoop_gpio interfacein favour of support for generic gpio interface. It requires gpiolib, so it depends on the previous patch (gpiolib for SA-1100). Signed-off-by: Dmitry Baryshkov Signed-off-by: Russell King --- arch/arm/common/scoop.c | 125 +++++++++++++++++++++++++++++++++++++-- include/asm-arm/hardware/scoop.h | 5 +- 2 files changed, 122 insertions(+), 8 deletions(-) (limited to 'include/asm-arm/hardware') diff --git a/arch/arm/common/scoop.c b/arch/arm/common/scoop.c index fc08577cdd6c..bc299b07a6fa 100644 --- a/arch/arm/common/scoop.c +++ b/arch/arm/common/scoop.c @@ -16,6 +16,7 @@ #include #include #include +#include #include /* PCMCIA to Scoop linkage @@ -32,6 +33,7 @@ EXPORT_SYMBOL(platform_scoop_config); struct scoop_dev { void __iomem *base; + struct gpio_chip gpio; spinlock_t scoop_lock; unsigned short suspend_clr; unsigned short suspend_set; @@ -51,6 +53,77 @@ void reset_scoop(struct device *dev) iowrite16(0x0000, sdev->base + SCOOP_IRM); } +static void __scoop_gpio_set(struct scoop_dev *sdev, + unsigned offset, int value) +{ + unsigned short gpwr; + + gpwr = ioread16(sdev->base + SCOOP_GPWR); + if (value) + gpwr |= 1 << (offset + 1); + else + gpwr &= ~(1 << (offset + 1)); + iowrite16(gpwr, sdev->base + SCOOP_GPWR); +} + +static void scoop_gpio_set(struct gpio_chip *chip, unsigned offset, int value) +{ + struct scoop_dev *sdev = container_of(chip, struct scoop_dev, gpio); + unsigned long flags; + + spin_lock_irqsave(&sdev->scoop_lock, flags); + + __scoop_gpio_set(sdev, offset, value); + + spin_unlock_irqrestore(&sdev->scoop_lock, flags); +} + +static int scoop_gpio_get(struct gpio_chip *chip, unsigned offset) +{ + struct scoop_dev *sdev = container_of(chip, struct scoop_dev, gpio); + + /* XXX: I'm usure, but it seems so */ + return ioread16(sdev->base + SCOOP_GPRR) & (1 << (offset + 1)); +} + +static int scoop_gpio_direction_input(struct gpio_chip *chip, + unsigned offset) +{ + struct scoop_dev *sdev = container_of(chip, struct scoop_dev, gpio); + unsigned long flags; + unsigned short gpcr; + + spin_lock_irqsave(&sdev->scoop_lock, flags); + + gpcr = ioread16(sdev->base + SCOOP_GPCR); + gpcr &= ~(1 << (offset + 1)); + iowrite16(gpcr, sdev->base + SCOOP_GPCR); + + spin_unlock_irqrestore(&sdev->scoop_lock, flags); + + return 0; +} + +static int scoop_gpio_direction_output(struct gpio_chip *chip, + unsigned offset, int value) +{ + struct scoop_dev *sdev = container_of(chip, struct scoop_dev, gpio); + unsigned long flags; + unsigned short gpcr; + + spin_lock_irqsave(&sdev->scoop_lock, flags); + + __scoop_gpio_set(sdev, offset, value); + + gpcr = ioread16(sdev->base + SCOOP_GPCR); + gpcr |= 1 << (offset + 1); + iowrite16(gpcr, sdev->base + SCOOP_GPCR); + + spin_unlock_irqrestore(&sdev->scoop_lock, flags); + + return 0; +} + unsigned short set_scoop_gpio(struct device *dev, unsigned short bit) { unsigned short gpio_bit; @@ -138,6 +211,8 @@ static int __devinit scoop_probe(struct platform_device *pdev) struct scoop_dev *devptr; struct scoop_config *inf; struct resource *mem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + int ret; + int temp; if (!mem) return -EINVAL; @@ -152,8 +227,8 @@ static int __devinit scoop_probe(struct platform_device *pdev) devptr->base = ioremap(mem->start, mem->end - mem->start + 1); if (!devptr->base) { - kfree(devptr); - return -ENOMEM; + ret = -ENOMEM; + goto err_ioremap; } platform_set_drvdata(pdev, devptr); @@ -169,17 +244,55 @@ static int __devinit scoop_probe(struct platform_device *pdev) devptr->suspend_clr = inf->suspend_clr; devptr->suspend_set = inf->suspend_set; + devptr->gpio.base = -1; + + if (inf->gpio_base != 0) { + devptr->gpio.label = pdev->dev.bus_id; + devptr->gpio.base = inf->gpio_base; + devptr->gpio.ngpio = 12; /* PA11 = 0, PA12 = 1, etc. up to PA22 = 11 */ + devptr->gpio.set = scoop_gpio_set; + devptr->gpio.get = scoop_gpio_get; + devptr->gpio.direction_input = scoop_gpio_direction_input; + devptr->gpio.direction_output = scoop_gpio_direction_output; + + ret = gpiochip_add(&devptr->gpio); + if (ret) + goto err_gpio; + } + return 0; + + if (devptr->gpio.base != -1) + temp = gpiochip_remove(&devptr->gpio); +err_gpio: + platform_set_drvdata(pdev, NULL); +err_ioremap: + iounmap(devptr->base); + kfree(devptr); + + return ret; } static int __devexit scoop_remove(struct platform_device *pdev) { struct scoop_dev *sdev = platform_get_drvdata(pdev); - if (sdev) { - iounmap(sdev->base); - kfree(sdev); - platform_set_drvdata(pdev, NULL); + int ret; + + if (!sdev) + return -EINVAL; + + if (sdev->gpio.base != -1) { + ret = gpiochip_remove(&sdev->gpio); + if (ret) { + dev_err(&pdev->dev, "Can't remove gpio chip: %d\n", ret); + return ret; + } } + + platform_set_drvdata(pdev, NULL); + iounmap(sdev->base); + kfree(sdev); + return 0; } diff --git a/include/asm-arm/hardware/scoop.h b/include/asm-arm/hardware/scoop.h index d37bf7443264..dfb8330599f9 100644 --- a/include/asm-arm/hardware/scoop.h +++ b/include/asm-arm/hardware/scoop.h @@ -40,6 +40,7 @@ struct scoop_config { unsigned short io_dir; unsigned short suspend_clr; unsigned short suspend_set; + int gpio_base; }; /* Structure for linking scoop devices to PCMCIA sockets */ @@ -62,7 +63,7 @@ struct scoop_pcmcia_config { extern struct scoop_pcmcia_config *platform_scoop_config; void reset_scoop(struct device *dev); -unsigned short set_scoop_gpio(struct device *dev, unsigned short bit); -unsigned short reset_scoop_gpio(struct device *dev, unsigned short bit); +unsigned short __deprecated set_scoop_gpio(struct device *dev, unsigned short bit); +unsigned short __deprecated reset_scoop_gpio(struct device *dev, unsigned short bit); unsigned short read_scoop_reg(struct device *dev, unsigned short reg); void write_scoop_reg(struct device *dev, unsigned short reg, unsigned short data); -- cgit v1.2.3