From patchwork Tue Sep 11 09:42:17 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Shubhrajyoti Datta X-Patchwork-Id: 1436581 Return-Path: X-Original-To: patchwork-linux-omap@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by patchwork1.kernel.org (Postfix) with ESMTP id 226923FC33 for ; Tue, 11 Sep 2012 09:43:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932118Ab2IKJnv (ORCPT ); Tue, 11 Sep 2012 05:43:51 -0400 Received: from arroyo.ext.ti.com ([192.94.94.40]:46719 "EHLO arroyo.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932108Ab2IKJnt (ORCPT ); Tue, 11 Sep 2012 05:43:49 -0400 Received: from dbdp20.itg.ti.com ([172.24.170.38]) by arroyo.ext.ti.com (8.13.7/8.13.7) with ESMTP id q8B9grif015021; Tue, 11 Sep 2012 04:42:54 -0500 Received: from DBDE70.ent.ti.com (localhost [127.0.0.1]) by dbdp20.itg.ti.com (8.13.8/8.13.8) with ESMTP id q8B9gr8s009227; Tue, 11 Sep 2012 15:12:53 +0530 (IST) Received: from dbdp32.itg.ti.com (172.24.170.251) by dbde70.ent.ti.com (172.24.170.148) with Microsoft SMTP Server id 14.1.323.3; Tue, 11 Sep 2012 15:12:53 +0530 Received: from ula0393217.india.ti.com (smtpvbd.itg.ti.com [172.24.170.250]) by dbdp32.itg.ti.com (8.13.8/8.13.8) with ESMTP id q8B9gKDk010282; Tue, 11 Sep 2012 15:12:53 +0530 From: Shubhrajyoti D To: CC: , , , , , Felipe Balbi , Shubhrajyoti D Subject: [PATCHv7 22/23] i2c: omap: switch over to autosuspend API Date: Tue, 11 Sep 2012 15:12:17 +0530 Message-ID: <1347356538-23835-23-git-send-email-shubhrajyoti@ti.com> X-Mailer: git-send-email 1.7.5.4 In-Reply-To: <1347356538-23835-1-git-send-email-shubhrajyoti@ti.com> References: <1347356538-23835-1-git-send-email-shubhrajyoti@ti.com> MIME-Version: 1.0 Sender: linux-omap-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-omap@vger.kernel.org From: Felipe Balbi this helps us reduce unnecessary pm transitions in case we have another i2c message starting soon. Signed-off-by: Felipe Balbi Signed-off-by: Shubhrajyoti D --- drivers/i2c/busses/i2c-omap.c | 12 ++++++++++-- 1 files changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/i2c/busses/i2c-omap.c b/drivers/i2c/busses/i2c-omap.c index 6d38a57..122f517 100644 --- a/drivers/i2c/busses/i2c-omap.c +++ b/drivers/i2c/busses/i2c-omap.c @@ -55,6 +55,9 @@ /* timeout waiting for the controller to respond */ #define OMAP_I2C_TIMEOUT (msecs_to_jiffies(1000)) +/* timeout for pm runtime autosuspend */ +#define OMAP_I2C_PM_TIMEOUT 1000 /* ms */ + /* For OMAP3 I2C_IV has changed to I2C_WE (wakeup enable) */ enum { OMAP_I2C_REV_REG = 0, @@ -645,7 +648,8 @@ omap_i2c_xfer(struct i2c_adapter *adap, struct i2c_msg msgs[], int num) omap_i2c_wait_for_bb(dev); out: - pm_runtime_put(dev->dev); + pm_runtime_mark_last_busy(dev->dev); + pm_runtime_put_autosuspend(dev->dev); return r; } @@ -1113,6 +1117,9 @@ omap_i2c_probe(struct platform_device *pdev) dev->regs = (u8 *)reg_map_ip_v1; pm_runtime_enable(dev->dev); + pm_runtime_set_autosuspend_delay(dev->dev, OMAP_I2C_PM_TIMEOUT); + pm_runtime_use_autosuspend(dev->dev); + r = pm_runtime_get_sync(dev->dev); if (IS_ERR_VALUE(r)) goto err_free_mem; @@ -1190,7 +1197,8 @@ omap_i2c_probe(struct platform_device *pdev) of_i2c_register_devices(adap); - pm_runtime_put(dev->dev); + pm_runtime_mark_last_busy(dev->dev); + pm_runtime_put_autosuspend(dev->dev); return 0;