Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756863Ab3ETN37 (ORCPT ); Mon, 20 May 2013 09:29:59 -0400 Received: from multi.imgtec.com ([194.200.65.239]:44979 "EHLO multi.imgtec.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756660Ab3ETN3O (ORCPT ); Mon, 20 May 2013 09:29:14 -0400 From: James Hogan To: Mike Turquette , CC: Stephen Boyd , , Saravana Kannan , James Hogan Subject: [PATCH v4 1/5] clk: abstract parent cache Date: Mon, 20 May 2013 14:28:23 +0100 Message-ID: <1369056507-32521-2-git-send-email-james.hogan@imgtec.com> X-Mailer: git-send-email 1.8.1.2 In-Reply-To: <1369056507-32521-1-git-send-email-james.hogan@imgtec.com> References: <1369056507-32521-1-git-send-email-james.hogan@imgtec.com> MIME-Version: 1.0 Content-Type: text/plain X-SEF-Processed: 7_3_0_01181__2013_05_20_14_29_12 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2544 Lines: 77 Abstract access to the clock parent cache by defining clk_get_parent_by_index(clk, index). This allows access to parent clocks from clock drivers. Signed-off-by: James Hogan Reviewed-by: Stephen Boyd Cc: Mike Turquette Cc: linux-arm-kernel@lists.infradead.org --- Changes in v3: * remove double underscore prefix from clk_get_parent_by_index() drivers/clk/clk.c | 21 ++++++++++++++------- include/linux/clk-provider.h | 1 + 2 files changed, 15 insertions(+), 7 deletions(-) diff --git a/drivers/clk/clk.c b/drivers/clk/clk.c index 74e5ab2..f0ebada 100644 --- a/drivers/clk/clk.c +++ b/drivers/clk/clk.c @@ -559,6 +559,19 @@ struct clk *__clk_get_parent(struct clk *clk) return !clk ? NULL : clk->parent; } +struct clk *clk_get_parent_by_index(struct clk *clk, u8 index) +{ + if (!clk || index >= clk->num_parents) + return NULL; + else if (!clk->parents) + return __clk_lookup(clk->parent_names[index]); + else if (!clk->parents[index]) + return clk->parents[index] = + __clk_lookup(clk->parent_names[index]); + else + return clk->parents[index]; +} + unsigned int __clk_get_enable_count(struct clk *clk) { return !clk ? 0 : clk->enable_count; @@ -1315,13 +1328,7 @@ static struct clk *__clk_init_parent(struct clk *clk) kzalloc((sizeof(struct clk*) * clk->num_parents), GFP_KERNEL); - if (!clk->parents) - ret = __clk_lookup(clk->parent_names[index]); - else if (!clk->parents[index]) - ret = clk->parents[index] = - __clk_lookup(clk->parent_names[index]); - else - ret = clk->parents[index]; + ret = clk_get_parent_by_index(clk, index); out: return ret; diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h index 1186098..76b1667 100644 --- a/include/linux/clk-provider.h +++ b/include/linux/clk-provider.h @@ -403,6 +403,7 @@ const char *__clk_get_name(struct clk *clk); struct clk_hw *__clk_get_hw(struct clk *clk); u8 __clk_get_num_parents(struct clk *clk); struct clk *__clk_get_parent(struct clk *clk); +struct clk *clk_get_parent_by_index(struct clk *clk, u8 index); unsigned int __clk_get_enable_count(struct clk *clk); unsigned int __clk_get_prepare_count(struct clk *clk); unsigned long __clk_get_rate(struct clk *clk); -- 1.8.1.2 -- 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/