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Date: Mon, 7 Jan 2013 12:21:43 +0100 From: Fabio Baltieri <fabio.baltieri@...aro.org> To: Vinod Koul <vinod.koul@...el.com> Cc: Dan Williams <djbw@...com>, Linus Walleij <linus.walleij@...aro.org>, Srinidhi Kasagar <srinidhi.kasagar@...ricsson.com>, linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, Narayanan <narayanan.gopalakrishnan@...ricsson.com>, Fabio Baltieri <fabio.baltieri@...aro.org> Subject: [PATCH 01/16] dmaengine: ste_dma40: reset priority bit for logical channels From: Narayanan <narayanan.gopalakrishnan@...ricsson.com> This patch sets the SSCFG/SDCFG bit[7] PRI only for physical channel requests with high priority. For logical channels, this bit will be zero. Signed-off-by: Narayanan G <narayanan.gopalakrishnan@...ricsson.com> Reviewed-by: Rabin Vincent <rabin.vincent@...ricsson.com> Acked-by: Linus Walleij <linus.walleij@...aro.org> Signed-off-by: Fabio Baltieri <fabio.baltieri@...aro.org> --- drivers/dma/ste_dma40_ll.c | 11 ++++++----- 1 file changed, 6 insertions(+), 5 deletions(-) diff --git a/drivers/dma/ste_dma40_ll.c b/drivers/dma/ste_dma40_ll.c index 851ad56..d64b72a 100644 --- a/drivers/dma/ste_dma40_ll.c +++ b/drivers/dma/ste_dma40_ll.c @@ -102,17 +102,18 @@ void d40_phy_cfg(struct stedma40_chan_cfg *cfg, src |= cfg->src_info.data_width << D40_SREG_CFG_ESIZE_POS; dst |= cfg->dst_info.data_width << D40_SREG_CFG_ESIZE_POS; + /* Set the priority bit to high for the physical channel */ + if (cfg->high_priority) { + src |= 1 << D40_SREG_CFG_PRI_POS; + dst |= 1 << D40_SREG_CFG_PRI_POS; + } + } else { /* Logical channel */ dst |= 1 << D40_SREG_CFG_LOG_GIM_POS; src |= 1 << D40_SREG_CFG_LOG_GIM_POS; } - if (cfg->high_priority) { - src |= 1 << D40_SREG_CFG_PRI_POS; - dst |= 1 << D40_SREG_CFG_PRI_POS; - } - if (cfg->src_info.big_endian) src |= 1 << D40_SREG_CFG_LBE_POS; if (cfg->dst_info.big_endian) -- 1.7.12.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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