From 724ce5ee15ff4c4f3035110b683b990a3b33c832 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Uwe=20Kleine-K=C3=B6nig?= Date: Fri, 15 Feb 2008 08:41:06 +0100 Subject: ns9xxx: prepare for adding support for Digi ns921x processors MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit The hardware team changed some things that were taken as being common to all ns9xxx processors up to now. This patch addresses: - irqs: s/IRQ_/IRQ_NS9360_/ - system module registers: some registers are still general, their definition lives now in include/asm-arm/arch-ns9xxx/regs-sys-common.h. The ns9360 specific ones are in .../regs-sys-ns9360.h As a result ns9360_systemclock cannot be static inline any more as its definition needs regs-sys-ns9360.h. This becomes a real problem when adding support for ns9215 as this will need regs-sys-ns9215.h and including both files will not work. For the same reason ns9360_reset() is now non-inline and gpio functions live in their own file. - register mapping: s/ns9xxx_map_io/ns9360_map_io/ - timer registers: move time.c to time-ns9360.c; s/ns9xxx_timer/ns9360_timer/ Signed-off-by: Uwe Kleine-König --- arch/arm/mach-ns9xxx/gpio.c | 141 +++++++++++++++----------------------------- 1 file changed, 48 insertions(+), 93 deletions(-) (limited to 'arch/arm/mach-ns9xxx/gpio.c') diff --git a/arch/arm/mach-ns9xxx/gpio.c b/arch/arm/mach-ns9xxx/gpio.c index 5286e9fc1d3..b3c963b0c8f 100644 --- a/arch/arm/mach-ns9xxx/gpio.c +++ b/arch/arm/mach-ns9xxx/gpio.c @@ -1,7 +1,7 @@ /* * arch/arm/mach-ns9xxx/gpio.c * - * Copyright (C) 2006 by Digi International Inc. + * Copyright (C) 2006,2007 by Digi International Inc. * All rights reserved. * * This program is free software; you can redistribute it and/or modify it @@ -15,12 +15,13 @@ #include #include -#include -#include +#include #include #include #include +#include "gpio-ns9360.h" + #if defined(CONFIG_PROCESSOR_NS9360) #define GPIO_MAX 72 #elif defined(CONFIG_PROCESSOR_NS9750) @@ -45,41 +46,10 @@ static inline int ns9xxx_valid_gpio(unsigned gpio) return gpio <= 49; else #endif + { BUG(); -} - -static inline void __iomem *ns9xxx_gpio_get_gconfaddr(unsigned gpio) -{ - if (gpio < 56) - return BBU_GCONFb1(gpio / 8); - else - /* - * this could be optimised away on - * ns9750 only builds, but it isn't ... - */ - return BBU_GCONFb2((gpio - 56) / 8); -} - -static inline void __iomem *ns9xxx_gpio_get_gctrladdr(unsigned gpio) -{ - if (gpio < 32) - return BBU_GCTRL1; - else if (gpio < 64) - return BBU_GCTRL2; - else - /* this could be optimised away on ns9750 only builds */ - return BBU_GCTRL3; -} - -static inline void __iomem *ns9xxx_gpio_get_gstataddr(unsigned gpio) -{ - if (gpio < 32) - return BBU_GSTAT1; - else if (gpio < 64) - return BBU_GSTAT2; - else - /* this could be optimised away on ns9750 only builds */ - return BBU_GSTAT3; + return 0; + } } int gpio_request(unsigned gpio, const char *label) @@ -98,49 +68,24 @@ void gpio_free(unsigned gpio) } EXPORT_SYMBOL(gpio_free); -/* - * each gpio can serve for 4 different purposes [0..3]. These are called - * "functions" and passed in the parameter func. Functions 0-2 are always some - * special things, function 3 is GPIO. If func == 3 dir specifies input or - * output, and with inv you can enable an inverter (independent of func). - */ -static int __ns9xxx_gpio_configure(unsigned gpio, int dir, int inv, int func) +int gpio_direction_input(unsigned gpio) { - void __iomem *conf = ns9xxx_gpio_get_gconfaddr(gpio); - u32 confval; - unsigned long flags; - - spin_lock_irqsave(&gpio_lock, flags); - - confval = __raw_readl(conf); - REGSETIM_IDX(confval, BBU_GCONFx, DIR, gpio & 7, dir); - REGSETIM_IDX(confval, BBU_GCONFx, INV, gpio & 7, inv); - REGSETIM_IDX(confval, BBU_GCONFx, FUNC, gpio & 7, func); - __raw_writel(confval, conf); + if (likely(ns9xxx_valid_gpio(gpio))) { + int ret = -EINVAL; + unsigned long flags; - spin_unlock_irqrestore(&gpio_lock, flags); + spin_lock_irqsave(&gpio_lock, flags); +#if defined(CONFIG_PROCESSOR_NS9360) + if (processor_is_ns9360()) + ret = __ns9360_gpio_configure(gpio, 0, 0, 3); + else +#endif + BUG(); - return 0; -} + spin_unlock_irqrestore(&gpio_lock, flags); -int ns9xxx_gpio_configure(unsigned gpio, int inv, int func) -{ - if (likely(ns9xxx_valid_gpio(gpio))) { - if (func == 3) { - printk(KERN_WARNING "use gpio_direction_input " - "or gpio_direction_output\n"); - return -EINVAL; - } else - return __ns9xxx_gpio_configure(gpio, 0, inv, func); - } else - return -EINVAL; -} -EXPORT_SYMBOL(ns9xxx_gpio_configure); + return ret; -int gpio_direction_input(unsigned gpio) -{ - if (likely(ns9xxx_valid_gpio(gpio))) { - return __ns9xxx_gpio_configure(gpio, 0, 0, 3); } else return -EINVAL; } @@ -149,9 +94,22 @@ EXPORT_SYMBOL(gpio_direction_input); int gpio_direction_output(unsigned gpio, int value) { if (likely(ns9xxx_valid_gpio(gpio))) { + int ret = -EINVAL; + unsigned long flags; + gpio_set_value(gpio, value); - return __ns9xxx_gpio_configure(gpio, 1, 0, 3); + spin_lock_irqsave(&gpio_lock, flags); +#if defined(CONFIG_PROCESSOR_NS9360) + if (processor_is_ns9360()) + ret = __ns9360_gpio_configure(gpio, 1, 0, 3); + else +#endif + BUG(); + + spin_unlock_irqrestore(&gpio_lock, flags); + + return ret; } else return -EINVAL; } @@ -159,31 +117,28 @@ EXPORT_SYMBOL(gpio_direction_output); int gpio_get_value(unsigned gpio) { - void __iomem *stat = ns9xxx_gpio_get_gstataddr(gpio); - int ret; - - ret = 1 & (__raw_readl(stat) >> (gpio & 31)); - - return ret; +#if defined(CONFIG_PROCESSOR_NS9360) + if (processor_is_ns9360()) + return ns9360_gpio_get_value(gpio); + else +#endif + { + BUG(); + return -EINVAL; + } } EXPORT_SYMBOL(gpio_get_value); void gpio_set_value(unsigned gpio, int value) { - void __iomem *ctrl = ns9xxx_gpio_get_gctrladdr(gpio); - u32 ctrlval; unsigned long flags; - spin_lock_irqsave(&gpio_lock, flags); - - ctrlval = __raw_readl(ctrl); - - if (value) - ctrlval |= 1 << (gpio & 31); +#if defined(CONFIG_PROCESSOR_NS9360) + if (processor_is_ns9360()) + ns9360_gpio_set_value(gpio, value); else - ctrlval &= ~(1 << (gpio & 31)); - - __raw_writel(ctrlval, ctrl); +#endif + BUG(); spin_unlock_irqrestore(&gpio_lock, flags); } -- cgit v1.2.3