From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752691Ab1HAL4z (ORCPT ); Mon, 1 Aug 2011 07:56:55 -0400 Received: from eu1sys200aog113.obsmtp.com ([207.126.144.135]:58715 "EHLO eu1sys200aog113.obsmtp.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752573Ab1HAL4v (ORCPT ); Mon, 1 Aug 2011 07:56:51 -0400 From: Viresh Kumar To: , Cc: , , , , , , , , , , , , , , Subject: [PATCH V3 08/20] dmaengine/amba-pl08x: support runtime PM Date: Mon, 1 Aug 2011 17:26:30 +0530 Message-ID: X-Mailer: git-send-email 1.7.2.2 In-Reply-To: References: MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Insert notifiers for the runtime PM API. With this the runtime PM layer kicks in to action where used. This will also handle enabling/disabling of interface clock (Code will be added in amba/bus.c by Russell King). Signed-off-by: Viresh Kumar --- drivers/dma/amba-pl08x.c | 17 +++++++++++++++++ 1 files changed, 17 insertions(+), 0 deletions(-) diff --git a/drivers/dma/amba-pl08x.c b/drivers/dma/amba-pl08x.c index 3fbaf0e..a829f0e 100644 --- a/drivers/dma/amba-pl08x.c +++ b/drivers/dma/amba-pl08x.c @@ -84,6 +84,7 @@ #include #include #include +#include #include #include #include @@ -879,11 +880,19 @@ static void pl08x_free_txd_list(struct pl08x_driver_data *pl08x, */ static int pl08x_alloc_chan_resources(struct dma_chan *chan) { + struct pl08x_dma_chan *plchan = to_pl08x_chan(chan); + struct pl08x_driver_data *pl08x = plchan->host; + + pm_runtime_get_sync(&pl08x->adev->dev); return 0; } static void pl08x_free_chan_resources(struct dma_chan *chan) { + struct pl08x_dma_chan *plchan = to_pl08x_chan(chan); + struct pl08x_driver_data *pl08x = plchan->host; + + pm_runtime_put_sync(&pl08x->adev->dev); } /* @@ -1855,6 +1864,9 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id) goto out_no_pl08x; } + pm_runtime_set_active(&adev->dev); + pm_runtime_enable(&adev->dev); + /* Initialize memcpy engine */ dma_cap_set(DMA_MEMCPY, pl08x->memcpy.cap_mask); pl08x->memcpy.dev = &adev->dev; @@ -1993,6 +2005,8 @@ static int pl08x_probe(struct amba_device *adev, const struct amba_id *id) dev_info(&pl08x->adev->dev, "DMA: PL%03x rev%u at 0x%08llx irq %d\n", amba_part(adev), amba_rev(adev), (unsigned long long)adev->res.start, adev->irq[0]); + + pm_runtime_put_sync(&adev->dev); return 0; out_no_slave_reg: @@ -2011,6 +2025,9 @@ out_no_ioremap: dma_pool_destroy(pl08x->pool); out_no_lli_pool: out_no_platdata: + pm_runtime_put_sync(&adev->dev); + pm_runtime_disable(&adev->dev); + kfree(pl08x); out_no_pl08x: amba_release_regions(adev); -- 1.7.2.2