From patchwork Sat Jan 31 23:21:32 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Guennadi Liakhovetski X-Patchwork-Id: 5755931 Return-Path: X-Original-To: patchwork-linux-media@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 488F79F336 for ; Sat, 31 Jan 2015 23:21:44 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 43A792021B for ; Sat, 31 Jan 2015 23:21:43 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 292AC2020F for ; Sat, 31 Jan 2015 23:21:42 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753138AbbAaXVh (ORCPT ); Sat, 31 Jan 2015 18:21:37 -0500 Received: from mout.gmx.net ([212.227.15.15]:54856 "EHLO mout.gmx.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753052AbbAaXVh (ORCPT ); Sat, 31 Jan 2015 18:21:37 -0500 Received: from axis700.grange ([78.35.88.112]) by mail.gmx.com (mrgmx001) with ESMTPSA (Nemesis) id 0MOw4N-1YLI7O32k3-006LoD; Sun, 01 Feb 2015 00:21:33 +0100 Received: by axis700.grange (Postfix, from userid 1000) id 48FD940BDB; Sun, 1 Feb 2015 00:21:32 +0100 (CET) Received: from localhost (localhost [127.0.0.1]) by axis700.grange (Postfix) with ESMTP id 45C9D40BD9; Sun, 1 Feb 2015 00:21:32 +0100 (CET) Date: Sun, 1 Feb 2015 00:21:32 +0100 (CET) From: Guennadi Liakhovetski X-X-Sender: lyakh@axis700.grange To: Linux Media Mailing List cc: Josh Wu , Laurent Pinchart Subject: [PATCH v3 1/2] V4L: remove clock name from v4l2_clk API In-Reply-To: Message-ID: References: MIME-Version: 1.0 X-Provags-ID: V03:K0:cpsbj7TMM1abCjeH7iSx/t4p8FQzYwU6k5n2c6AQ/HBC2LIN3mU +YP7zTgHwZOnPxKGCjmXLctbKBXhlcQxrUuVPxpQ2QpSq41n6IZ3WS5My/6FmnbdUWZ7BRv WLp3bCMhsVin32T67LdbqLZVt2oL9uMDiRGqNZizAyVxi63FVsXCacBengMBbFwh2i5vCg5 NHaeaHGQdloLvIuyz/+9A== X-UI-Out-Filterresults: notjunk:1; Sender: linux-media-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-media@vger.kernel.org X-Spam-Status: No, score=-4.1 required=5.0 tests=BAYES_00,FREEMAIL_FROM, MALFORMED_FREEMAIL, RCVD_IN_DNSWL_HI, T_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 All uses of the v4l2_clk API so far only register one clock with a fixed name. This allows us to get rid of it, which also will make CCF and DT integration easier. Signed-off-by: Guennadi Liakhovetski Acked-by: Laurent Pinchart Tested-by: Josh Wu --- v3: .id field removed from the struct. Since CCF clocks won't be added to the V4L2 clock list at all in patch 2 in this series, no clock ID comparison is needed in v4l2_clk_find() either. drivers/media/platform/soc_camera/soc_camera.c | 6 ++--- drivers/media/usb/em28xx/em28xx-camera.c | 2 +- drivers/media/v4l2-core/v4l2-clk.c | 33 ++++++++++---------------- include/media/v4l2-clk.h | 8 +++---- 4 files changed, 20 insertions(+), 29 deletions(-) diff --git a/drivers/media/platform/soc_camera/soc_camera.c b/drivers/media/platform/soc_camera/soc_camera.c index f4be2a1..ce192b6 100644 --- a/drivers/media/platform/soc_camera/soc_camera.c +++ b/drivers/media/platform/soc_camera/soc_camera.c @@ -1380,7 +1380,7 @@ static int soc_camera_i2c_init(struct soc_camera_device *icd, snprintf(clk_name, sizeof(clk_name), "%d-%04x", shd->i2c_adapter_id, shd->board_info->addr); - icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, "mclk", icd); + icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, icd); if (IS_ERR(icd->clk)) { ret = PTR_ERR(icd->clk); goto eclkreg; @@ -1561,7 +1561,7 @@ static int scan_async_group(struct soc_camera_host *ici, snprintf(clk_name, sizeof(clk_name), "%d-%04x", sasd->asd.match.i2c.adapter_id, sasd->asd.match.i2c.address); - icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, "mclk", icd); + icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, icd); if (IS_ERR(icd->clk)) { ret = PTR_ERR(icd->clk); goto eclkreg; @@ -1666,7 +1666,7 @@ static int soc_of_bind(struct soc_camera_host *ici, snprintf(clk_name, sizeof(clk_name), "of-%s", of_node_full_name(remote)); - icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, "mclk", icd); + icd->clk = v4l2_clk_register(&soc_camera_clk_ops, clk_name, icd); if (IS_ERR(icd->clk)) { ret = PTR_ERR(icd->clk); goto eclkreg; diff --git a/drivers/media/usb/em28xx/em28xx-camera.c b/drivers/media/usb/em28xx/em28xx-camera.c index 7be661f..a4b22c2 100644 --- a/drivers/media/usb/em28xx/em28xx-camera.c +++ b/drivers/media/usb/em28xx/em28xx-camera.c @@ -330,7 +330,7 @@ int em28xx_init_camera(struct em28xx *dev) v4l2_clk_name_i2c(clk_name, sizeof(clk_name), i2c_adapter_id(adap), client->addr); - v4l2->clk = v4l2_clk_register_fixed(clk_name, "mclk", -EINVAL); + v4l2->clk = v4l2_clk_register_fixed(clk_name, -EINVAL); if (IS_ERR(v4l2->clk)) return PTR_ERR(v4l2->clk); diff --git a/drivers/media/v4l2-core/v4l2-clk.c b/drivers/media/v4l2-core/v4l2-clk.c index e18cc04..3ff0b00 100644 --- a/drivers/media/v4l2-core/v4l2-clk.c +++ b/drivers/media/v4l2-core/v4l2-clk.c @@ -23,17 +23,13 @@ static DEFINE_MUTEX(clk_lock); static LIST_HEAD(clk_list); -static struct v4l2_clk *v4l2_clk_find(const char *dev_id, const char *id) +static struct v4l2_clk *v4l2_clk_find(const char *dev_id) { struct v4l2_clk *clk; - list_for_each_entry(clk, &clk_list, list) { - if (strcmp(dev_id, clk->dev_id)) - continue; - - if (!id || !clk->id || !strcmp(clk->id, id)) + list_for_each_entry(clk, &clk_list, list) + if (!strcmp(dev_id, clk->dev_id)) return clk; - } return ERR_PTR(-ENODEV); } @@ -43,7 +39,7 @@ struct v4l2_clk *v4l2_clk_get(struct device *dev, const char *id) struct v4l2_clk *clk; mutex_lock(&clk_lock); - clk = v4l2_clk_find(dev_name(dev), id); + clk = v4l2_clk_find(dev_name(dev)); if (!IS_ERR(clk)) atomic_inc(&clk->use_count); @@ -127,8 +123,8 @@ void v4l2_clk_disable(struct v4l2_clk *clk) mutex_lock(&clk->lock); enable = --clk->enable; - if (WARN(enable < 0, "Unbalanced %s() on %s:%s!\n", __func__, - clk->dev_id, clk->id)) + if (WARN(enable < 0, "Unbalanced %s() on %s!\n", __func__, + clk->dev_id)) clk->enable++; else if (!enable && clk->ops->disable) clk->ops->disable(clk); @@ -181,7 +177,7 @@ EXPORT_SYMBOL(v4l2_clk_set_rate); struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops, const char *dev_id, - const char *id, void *priv) + void *priv) { struct v4l2_clk *clk; int ret; @@ -193,9 +189,8 @@ struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops, if (!clk) return ERR_PTR(-ENOMEM); - clk->id = kstrdup(id, GFP_KERNEL); clk->dev_id = kstrdup(dev_id, GFP_KERNEL); - if ((id && !clk->id) || !clk->dev_id) { + if (!clk->dev_id) { ret = -ENOMEM; goto ealloc; } @@ -205,7 +200,7 @@ struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops, mutex_init(&clk->lock); mutex_lock(&clk_lock); - if (!IS_ERR(v4l2_clk_find(dev_id, id))) { + if (!IS_ERR(v4l2_clk_find(dev_id))) { mutex_unlock(&clk_lock); ret = -EEXIST; goto eexist; @@ -217,7 +212,6 @@ struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops, eexist: ealloc: - kfree(clk->id); kfree(clk->dev_id); kfree(clk); return ERR_PTR(ret); @@ -227,15 +221,14 @@ EXPORT_SYMBOL(v4l2_clk_register); void v4l2_clk_unregister(struct v4l2_clk *clk) { if (WARN(atomic_read(&clk->use_count), - "%s(): Refusing to unregister ref-counted %s:%s clock!\n", - __func__, clk->dev_id, clk->id)) + "%s(): Refusing to unregister ref-counted %s clock!\n", + __func__, clk->dev_id)) return; mutex_lock(&clk_lock); list_del(&clk->list); mutex_unlock(&clk_lock); - kfree(clk->id); kfree(clk->dev_id); kfree(clk); } @@ -253,7 +246,7 @@ static unsigned long fixed_get_rate(struct v4l2_clk *clk) } struct v4l2_clk *__v4l2_clk_register_fixed(const char *dev_id, - const char *id, unsigned long rate, struct module *owner) + unsigned long rate, struct module *owner) { struct v4l2_clk *clk; struct v4l2_clk_fixed *priv = kzalloc(sizeof(*priv), GFP_KERNEL); @@ -265,7 +258,7 @@ struct v4l2_clk *__v4l2_clk_register_fixed(const char *dev_id, priv->ops.get_rate = fixed_get_rate; priv->ops.owner = owner; - clk = v4l2_clk_register(&priv->ops, dev_id, id, priv); + clk = v4l2_clk_register(&priv->ops, dev_id, priv); if (IS_ERR(clk)) kfree(priv); diff --git a/include/media/v4l2-clk.h b/include/media/v4l2-clk.h index 0b36cc1..928045f 100644 --- a/include/media/v4l2-clk.h +++ b/include/media/v4l2-clk.h @@ -26,7 +26,6 @@ struct v4l2_clk { struct list_head list; const struct v4l2_clk_ops *ops; const char *dev_id; - const char *id; int enable; struct mutex lock; /* Protect the enable count */ atomic_t use_count; @@ -43,7 +42,7 @@ struct v4l2_clk_ops { struct v4l2_clk *v4l2_clk_register(const struct v4l2_clk_ops *ops, const char *dev_name, - const char *name, void *priv); + void *priv); void v4l2_clk_unregister(struct v4l2_clk *clk); struct v4l2_clk *v4l2_clk_get(struct device *dev, const char *id); void v4l2_clk_put(struct v4l2_clk *clk); @@ -55,14 +54,13 @@ int v4l2_clk_set_rate(struct v4l2_clk *clk, unsigned long rate); struct module; struct v4l2_clk *__v4l2_clk_register_fixed(const char *dev_id, - const char *id, unsigned long rate, struct module *owner); + unsigned long rate, struct module *owner); void v4l2_clk_unregister_fixed(struct v4l2_clk *clk); static inline struct v4l2_clk *v4l2_clk_register_fixed(const char *dev_id, - const char *id, unsigned long rate) { - return __v4l2_clk_register_fixed(dev_id, id, rate, THIS_MODULE); + return __v4l2_clk_register_fixed(dev_id, rate, THIS_MODULE); } #define v4l2_clk_name_i2c(name, size, adap, client) snprintf(name, size, \