From mboxrd@z Thu Jan 1 00:00:00 1970 From: fabio.baltieri@linaro.org (Fabio Baltieri) Date: Mon, 7 Jan 2013 12:21:43 +0100 Subject: [PATCH 01/16] dmaengine: ste_dma40: reset priority bit for logical channels In-Reply-To: <1357557718-15676-1-git-send-email-fabio.baltieri@linaro.org> References: <1357557718-15676-1-git-send-email-fabio.baltieri@linaro.org> Message-ID: <1357557718-15676-2-git-send-email-fabio.baltieri@linaro.org> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org From: Narayanan 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 Reviewed-by: Rabin Vincent Acked-by: Linus Walleij Signed-off-by: Fabio Baltieri --- 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