From patchwork Thu Jun 18 06:47:31 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Bjorn Andersson X-Patchwork-Id: 6633351 X-Patchwork-Delegate: agross@codeaurora.org Return-Path: X-Original-To: patchwork-linux-arm-msm@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id E4AF69F326 for ; Thu, 18 Jun 2015 06:52:21 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 1A4112065D for ; Thu, 18 Jun 2015 06:52:21 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2294C2065A for ; Thu, 18 Jun 2015 06:52:20 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753128AbbFRGwK (ORCPT ); Thu, 18 Jun 2015 02:52:10 -0400 Received: from seldrel01.sonyericsson.com ([37.139.156.2]:16891 "EHLO seldrel01.sonyericsson.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752747AbbFRGv2 (ORCPT ); Thu, 18 Jun 2015 02:51:28 -0400 From: Bjorn Andersson To: Kumar Gala , Andy Gross , Samuel Ortiz , Lee Jones , Linus Walleij CC: , , , Subject: [PATCH 7/8] mfd: pm8921: Implement irq_get_irqchip_state Date: Wed, 17 Jun 2015 23:47:31 -0700 Message-ID: <1434610052-602-8-git-send-email-bjorn.andersson@sonymobile.com> X-Mailer: git-send-email 1.8.2.2 In-Reply-To: <1434610052-602-1-git-send-email-bjorn.andersson@sonymobile.com> References: <1434610052-602-1-git-send-email-bjorn.andersson@sonymobile.com> MIME-Version: 1.0 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org X-Spam-Status: No, score=-7.2 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Implement irq_chip->irq_get_irqchip_state to make it possible for PMIC block drivers to access the IRQ real time status bits. The status bits are used for various kinds of input signals, e.g. GPIO. Signed-off-by: Bjorn Andersson --- This patch can be picked up independently of the rest of the series. drivers/mfd/pm8921-core.c | 43 +++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) diff --git a/drivers/mfd/pm8921-core.c b/drivers/mfd/pm8921-core.c index 5a92646a2ccb..5f81ba0c50f5 100644 --- a/drivers/mfd/pm8921-core.c +++ b/drivers/mfd/pm8921-core.c @@ -236,11 +236,54 @@ static int pm8xxx_irq_set_type(struct irq_data *d, unsigned int flow_type) return pm8xxx_config_irq(chip, block, config); } +static int pm8xxx_irq_get_irqchip_state(struct irq_data *d, + enum irqchip_irq_state which, + bool *state) +{ + struct pm_irq_chip *chip = irq_data_get_irq_chip_data(d); + unsigned int pmirq = irqd_to_hwirq(d); + unsigned int bits; + int irq_bit; + u8 block; + int rc; + + if (!chip) { + pr_err("Failed to resolve pm_irq_chip\n"); + return -EINVAL; + } + + if (which != IRQCHIP_STATE_LINE_LEVEL) + return -EINVAL; + + block = pmirq / 8; + irq_bit = pmirq % 8; + + spin_lock(&chip->pm_irq_lock); + rc = regmap_write(chip->regmap, SSBI_REG_ADDR_IRQ_BLK_SEL, block); + if (rc) { + pr_err("Failed Selecting Block %d rc=%d\n", block, rc); + goto bail; + } + + rc = regmap_read(chip->regmap, SSBI_REG_ADDR_IRQ_RT_STATUS, &bits); + if (rc) { + pr_err("Failed Reading Status rc=%d\n", rc); + goto bail; + } + + *state = !!(bits & BIT(irq_bit)); +bail: + spin_unlock(&chip->pm_irq_lock); + + return rc ? rc : 0; +} + static struct irq_chip pm8xxx_irq_chip = { .name = "pm8xxx", .irq_mask_ack = pm8xxx_irq_mask_ack, .irq_unmask = pm8xxx_irq_unmask, .irq_set_type = pm8xxx_irq_set_type, + .irq_get_irqchip_state = pm8xxx_irq_get_irqchip_state, .flags = IRQCHIP_MASK_ON_SUSPEND | IRQCHIP_SKIP_SET_WAKE, };