Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763319AbZFLRe4 (ORCPT ); Fri, 12 Jun 2009 13:34:56 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1763289AbZFLReq (ORCPT ); Fri, 12 Jun 2009 13:34:46 -0400 Received: from bear.ext.ti.com ([192.94.94.41]:59190 "EHLO bear.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1763074AbZFLRem (ORCPT ); Fri, 12 Jun 2009 13:34:42 -0400 From: Vikram Pandita To: linux-serial@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-omap@vger.kernel.org, linux-arm-kernel@lists.arm.linux.org.uk, Vikram Pandita Subject: [PATCH] serial: 8250: add IRQ trigger support Date: Fri, 12 Jun 2009 12:32:51 -0500 Message-Id: <1244827971-14981-1-git-send-email-vikram.pandita@ti.com> X-Mailer: git-send-email 1.6.0.3.613.g9f8f13 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2284 Lines: 58 There is currently no provision for passing IRQ trigger flags for serial IRQs with triggering requirements (such as GPIO IRQs.) This patch adds UPF_IRQ_TRIG_* flags which map on to IRQF_TRIGGER_* flags. Signed-off-by: Vikram Pandita Acked-by: Kevin Hilman --- drivers/serial/8250.c | 10 ++++++++++ include/linux/serial_core.h | 4 ++++ 2 files changed, 14 insertions(+), 0 deletions(-) diff --git a/drivers/serial/8250.c b/drivers/serial/8250.c index bab115e..8235ef5 100644 --- a/drivers/serial/8250.c +++ b/drivers/serial/8250.c @@ -1641,6 +1641,16 @@ static int serial_link_irq_chain(struct uart_8250_port *up) struct irq_info *i; int ret, irq_flags = up->port.flags & UPF_SHARE_IRQ ? IRQF_SHARED : 0; + /* Get IRQ Trigger Flag */ + if (up->port.flags & UPF_IRQ_TRIG_RISING) + irq_flags |= IRQF_TRIGGER_RISING; + else if (up->port.flags & UPF_IRQ_TRIG_FALLING) + irq_flags |= IRQF_TRIGGER_FALLING; + else if (up->port.flags & UPF_IRQ_TRIG_HIGH) + irq_flags |= IRQF_TRIGGER_HIGH; + else if (up->port.flags & UPF_IRQ_TRIG_LOW) + irq_flags |= IRQF_TRIGGER_LOW; + mutex_lock(&hash_mutex); h = &irq_lists[up->port.irq % NR_IRQ_HASH]; diff --git a/include/linux/serial_core.h b/include/linux/serial_core.h index 57a97e5..07591d5 100644 --- a/include/linux/serial_core.h +++ b/include/linux/serial_core.h @@ -296,7 +296,11 @@ struct uart_port { #define UPF_SPD_WARP ((__force upf_t) (0x1010)) #define UPF_SKIP_TEST ((__force upf_t) (1 << 6)) #define UPF_AUTO_IRQ ((__force upf_t) (1 << 7)) +#define UPF_IRQ_TRIG_RISING ((__force upf_t) (1 << 8)) +#define UPF_IRQ_TRIG_FALLING ((__force upf_t) (1 << 9)) +#define UPF_IRQ_TRIG_HIGH ((__force upf_t) (1 << 10)) #define UPF_HARDPPS_CD ((__force upf_t) (1 << 11)) +#define UPF_IRQ_TRIG_LOW ((__force upf_t) (1 << 12)) #define UPF_LOW_LATENCY ((__force upf_t) (1 << 13)) #define UPF_BUGGY_UART ((__force upf_t) (1 << 14)) #define UPF_NO_TXEN_TEST ((__force upf_t) (1 << 15)) -- 1.6.0.3.613.g9f8f13 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/