From mboxrd@z Thu Jan 1 00:00:00 1970 From: David Brownell Subject: [patch 2.6.27-rc7-omap-git+ 2/3] omap uses new gpio_to_irq() hooks Date: Thu, 2 Oct 2008 17:47:37 -0700 Message-ID: <200810021747.37443.david-b@pacbell.net> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Return-path: Received: from smtp124.sbc.mail.sp1.yahoo.com ([69.147.64.97]:44229 "HELO smtp124.sbc.mail.sp1.yahoo.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with SMTP id S1753321AbYJCAtN (ORCPT ); Thu, 2 Oct 2008 20:49:13 -0400 Content-Disposition: inline Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: linux-omap@vger.kernel.org Make OMAP use the new __gpio_to_irq() hook, to make it easier to support IRQs coming in from off-chip gpio controllers, like the TWL4030/TPS65930 chip used on OMAP3 boads like Beagleboard.org and the Gumstix Overo. Signed-off-by: David Brownell --- arch/arm/plat-omap/gpio.c | 9 +++++++++ arch/arm/plat-omap/include/mach/gpio.h | 16 ++++++++++++---- 2 files changed, 21 insertions(+), 4 deletions(-) --- a/arch/arm/plat-omap/gpio.c +++ b/arch/arm/plat-omap/gpio.c @@ -1296,6 +1296,14 @@ static void gpio_set(struct gpio_chip *c spin_unlock_irqrestore(&bank->lock, flags); } +static int gpio_2irq(struct gpio_chip *chip, unsigned offset) +{ + struct gpio_bank *bank; + + bank = container_of(chip, struct gpio_bank, chip); + return bank->virtual_irq_start + offset; +} + /*---------------------------------------------------------------------*/ static int initialized; @@ -1495,6 +1503,7 @@ static int __init _omap_gpio_init(void) bank->chip.get = gpio_get; bank->chip.direction_output = gpio_output; bank->chip.set = gpio_set; + bank->chip.to_irq = gpio_2irq; if (bank_is_mpuio(bank)) { bank->chip.label = "mpuio"; #ifdef CONFIG_ARCH_OMAP16XX --- a/arch/arm/plat-omap/include/mach/gpio.h +++ b/arch/arm/plat-omap/include/mach/gpio.h @@ -109,16 +109,24 @@ static inline int gpio_cansleep(unsigned static inline int gpio_to_irq(unsigned gpio) { - if (gpio < (OMAP_MAX_GPIO_LINES + 16)) - return OMAP_GPIO_IRQ(gpio); - return -EINVAL; + return __gpio_to_irq(gpio); } static inline int irq_to_gpio(unsigned irq) { + int tmp; + + /* omap1 SOC mpuio */ if (cpu_class_is_omap1() && (irq < (IH_MPUIO_BASE + 16))) return (irq - IH_MPUIO_BASE) + OMAP_MAX_GPIO_LINES; - return irq - IH_GPIO_BASE; + + /* SOC gpio */ + tmp = irq - IH_GPIO_BASE; + if (tmp < OMAP_MAX_GPIO_LINES) + return tmp; + + /* we don't supply reverse mappings for non-SOC gpios */ + return -EIO; } #endif