From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756454AbZBSNtF (ORCPT ); Thu, 19 Feb 2009 08:49:05 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1756482AbZBSNra (ORCPT ); Thu, 19 Feb 2009 08:47:30 -0500 Received: from ti-out-0910.google.com ([209.85.142.191]:49874 "EHLO ti-out-0910.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755830AbZBSNrY (ORCPT ); Thu, 19 Feb 2009 08:47:24 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:date:message-id:x-mailer:in-reply-to:references; b=kn+LF3wsB18xvJfUYXoDf2wwapGZUbPTbkOHFev57qVQlxESMjQewZgaqbl7bdf3PX ldQxVdx+xalIpvc5KlIprtewbPpvaYtbdsn/ICh3Nz5sG5/cvPWurQJL9YA6zXQ3uoQN 9sZ59lkXT5YKhmniLSsbUwahdkcy0L/CrdcY4= From: Eric Miao To: LKML Cc: linux-arm-kernel , Eric Miao Subject: [PATCH] [ARM] pxa: add GPIO support for pxa168 Date: Thu, 19 Feb 2009 21:45:54 +0800 Message-Id: <1235051161-8858-6-git-send-email-eric.y.miao@gmail.com> X-Mailer: git-send-email 1.6.0.4 In-Reply-To: <1235051161-8858-5-git-send-email-eric.y.miao@gmail.com> References: <1235051161-8858-1-git-send-email-eric.y.miao@gmail.com> <1235051161-8858-2-git-send-email-eric.y.miao@gmail.com> <1235051161-8858-3-git-send-email-eric.y.miao@gmail.com> <1235051161-8858-4-git-send-email-eric.y.miao@gmail.com> <1235051161-8858-5-git-send-email-eric.y.miao@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Eric Miao Signed-off-by: Eric Miao --- arch/arm/Kconfig | 2 + arch/arm/mach-mmp/include/mach/gpio.h | 36 +++++++++++++++++++++++++++++++++ arch/arm/mach-mmp/pxa168.c | 19 +++++++++++++++++ 3 files changed, 57 insertions(+), 0 deletions(-) create mode 100644 arch/arm/mach-mmp/include/mach/gpio.h diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 7eaf910..165d396 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -490,6 +490,8 @@ config ARCH_PXA config ARCH_MMP bool "Marvell PXA168" depends on MMU + select GENERIC_GPIO + select ARCH_REQUIRE_GPIOLIB select HAVE_CLK select COMMON_CLKDEV select GENERIC_TIME diff --git a/arch/arm/mach-mmp/include/mach/gpio.h b/arch/arm/mach-mmp/include/mach/gpio.h new file mode 100644 index 0000000..0b1443b --- /dev/null +++ b/arch/arm/mach-mmp/include/mach/gpio.h @@ -0,0 +1,36 @@ +#ifndef __ASM_MACH_GPIO_H +#define __ASM_MACH_GPIO_H + +#include +#include +#include + +#define GPIO_REGS_VIRT (APB_VIRT_BASE + 0x19000) + +#define BANK_OFF(n) (((n) < 3) ? (n) << 2 : 0x100 + (((n) - 3) << 2)) +#define GPIO_REG(x) (*((volatile u32 *)(GPIO_REGS_VIRT + (x)))) + +#define NR_BUILTIN_GPIO (128) + +#define gpio_to_bank(gpio) ((gpio) >> 5) +#define gpio_to_irq(gpio) (IRQ_GPIO_START + (gpio)) +#define irq_to_gpio(irq) ((irq) - IRQ_GPIO_START) + + +#define __gpio_is_inverted(gpio) (0) +#define __gpio_is_occupied(gpio) (0) + +/* NOTE: these macros are defined here to make optimization of + * gpio_{get,set}_value() to work when 'gpio' is a constant. + * Usage of these macros otherwise is no longer recommended, + * use generic GPIO API whenever possible. + */ +#define GPIO_bit(gpio) (1 << ((gpio) & 0x1f)) + +#define GPLR(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x00) +#define GPDR(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x0c) +#define GPSR(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x18) +#define GPCR(x) GPIO_REG(BANK_OFF((x) >> 5) + 0x24) + +#include +#endif /* __ASM_MACH_GPIO_H */ diff --git a/arch/arm/mach-mmp/pxa168.c b/arch/arm/mach-mmp/pxa168.c index 546db19..db2356b 100644 --- a/arch/arm/mach-mmp/pxa168.c +++ b/arch/arm/mach-mmp/pxa168.c @@ -12,19 +12,38 @@ #include #include #include +#include +#include #include #include #include #include +#include #include #include "common.h" #include "clock.h" +#define APMASK(i) (GPIO_REGS_VIRT + BANK_OFF(i) + 0x09c) + +static void __init pxa168_init_gpio(void) +{ + int i; + + clk_enable(&clk_pxa168_gpio); + + /* unmask GPIO edge detection for all 4 banks - APMASKx */ + for (i = 0; i < 4; i++) + __raw_writel(0xffffffff, APMASK(i)); + + pxa_init_gpio(IRQ_PXA168_GPIOX, 0, 127, NULL); +} + void __init pxa168_init_irq(void) { icu_init_irq(); + pxa168_init_gpio(); } /* clocks for external use */ -- 1.6.0.4