From c2d4bb9d9387231f5e265d59600aeb6409be8e7a Mon Sep 17 00:00:00 2001 From: John Ogness Date: Mon, 27 Apr 2015 13:52:15 +0200 Subject: ARM: common: edma: clear completion interrupts on stop When stopping a DMA transfer with interrupts disabled it is possible that the DMA transfer completes before the events are cleared. In this case the completion interrupt will be pending, causing a completion callback after the transfer was stopped. By clearing the completion interrupt for the stopping channel it is ensured that no completion event will be generated after the stop. Signed-off-by: John Ogness Acked-by: Peter Ujfalusi Signed-off-by: Greg Kroah-Hartman --- arch/arm/common/edma.c | 3 +++ 1 file changed, 3 insertions(+) (limited to 'arch/arm') diff --git a/arch/arm/common/edma.c b/arch/arm/common/edma.c index 5662a872689b..873dbfcc7dc9 100644 --- a/arch/arm/common/edma.c +++ b/arch/arm/common/edma.c @@ -1350,6 +1350,9 @@ void edma_stop(unsigned channel) edma_shadow0_write_array(ctlr, SH_SECR, j, mask); edma_write_array(ctlr, EDMA_EMCR, j, mask); + /* clear possibly pending completion interrupt */ + edma_shadow0_write_array(ctlr, SH_ICR, j, mask); + pr_debug("EDMA: EER%d %08x\n", j, edma_shadow0_read_array(ctlr, SH_EER, j)); -- cgit v1.2.3 From a1706ed92e9d28990e1a78f697b09e8996f9af71 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Wed, 20 May 2015 19:46:25 +0200 Subject: ARM: shmobile: r8a7790 dtsi: Describe DMA for the serial ports Add DMA properties to all SCIF, SCIFA, SCIFB, and HSCIF device nodes. Signed-off-by: Geert Uytterhoeven Signed-off-by: Greg Kroah-Hartman --- arch/arm/boot/dts/r8a7790.dtsi | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) (limited to 'arch/arm') diff --git a/arch/arm/boot/dts/r8a7790.dtsi b/arch/arm/boot/dts/r8a7790.dtsi index 4bb2f4c17321..e4daa05d6cc4 100644 --- a/arch/arm/boot/dts/r8a7790.dtsi +++ b/arch/arm/boot/dts/r8a7790.dtsi @@ -531,6 +531,8 @@ interrupts = <0 144 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7790_CLK_SCIFA0>; clock-names = "sci_ick"; + dmas = <&dmac0 0x21>, <&dmac0 0x22>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -540,6 +542,8 @@ interrupts = <0 145 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7790_CLK_SCIFA1>; clock-names = "sci_ick"; + dmas = <&dmac0 0x25>, <&dmac0 0x26>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -549,6 +553,8 @@ interrupts = <0 151 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7790_CLK_SCIFA2>; clock-names = "sci_ick"; + dmas = <&dmac0 0x27>, <&dmac0 0x28>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -558,6 +564,8 @@ interrupts = <0 148 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7790_CLK_SCIFB0>; clock-names = "sci_ick"; + dmas = <&dmac0 0x3d>, <&dmac0 0x3e>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -567,6 +575,8 @@ interrupts = <0 149 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7790_CLK_SCIFB1>; clock-names = "sci_ick"; + dmas = <&dmac0 0x19>, <&dmac0 0x1a>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -576,6 +586,8 @@ interrupts = <0 150 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7790_CLK_SCIFB2>; clock-names = "sci_ick"; + dmas = <&dmac0 0x1d>, <&dmac0 0x1e>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -585,6 +597,8 @@ interrupts = <0 152 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7790_CLK_SCIF0>; clock-names = "sci_ick"; + dmas = <&dmac0 0x29>, <&dmac0 0x2a>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -594,6 +608,8 @@ interrupts = <0 153 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7790_CLK_SCIF1>; clock-names = "sci_ick"; + dmas = <&dmac0 0x2d>, <&dmac0 0x2e>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -603,6 +619,8 @@ interrupts = <0 154 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7790_CLK_HSCIF0>; clock-names = "sci_ick"; + dmas = <&dmac0 0x39>, <&dmac0 0x3a>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -612,6 +630,8 @@ interrupts = <0 155 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7790_CLK_HSCIF1>; clock-names = "sci_ick"; + dmas = <&dmac0 0x4d>, <&dmac0 0x4e>; + dma-names = "tx", "rx"; status = "disabled"; }; -- cgit v1.2.3 From 0c35004808c25da508b6efade365e78da5991983 Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Wed, 20 May 2015 19:46:26 +0200 Subject: ARM: shmobile: r8a7791 dtsi: Describe DMA for the serial ports Add DMA properties to all SCIF, SCIFA, SCIFB, and HSCIF device nodes. Signed-off-by: Geert Uytterhoeven Signed-off-by: Greg Kroah-Hartman --- arch/arm/boot/dts/r8a7791.dtsi | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) (limited to 'arch/arm') diff --git a/arch/arm/boot/dts/r8a7791.dtsi b/arch/arm/boot/dts/r8a7791.dtsi index 4696062f6dde..e8af960e2208 100644 --- a/arch/arm/boot/dts/r8a7791.dtsi +++ b/arch/arm/boot/dts/r8a7791.dtsi @@ -509,6 +509,8 @@ interrupts = <0 144 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7791_CLK_SCIFA0>; clock-names = "sci_ick"; + dmas = <&dmac0 0x21>, <&dmac0 0x22>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -518,6 +520,8 @@ interrupts = <0 145 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7791_CLK_SCIFA1>; clock-names = "sci_ick"; + dmas = <&dmac0 0x25>, <&dmac0 0x26>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -527,6 +531,8 @@ interrupts = <0 151 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7791_CLK_SCIFA2>; clock-names = "sci_ick"; + dmas = <&dmac0 0x27>, <&dmac0 0x28>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -536,6 +542,8 @@ interrupts = <0 29 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp11_clks R8A7791_CLK_SCIFA3>; clock-names = "sci_ick"; + dmas = <&dmac0 0x1b>, <&dmac0 0x1c>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -545,6 +553,8 @@ interrupts = <0 30 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp11_clks R8A7791_CLK_SCIFA4>; clock-names = "sci_ick"; + dmas = <&dmac0 0x1f>, <&dmac0 0x20>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -554,6 +564,8 @@ interrupts = <0 31 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp11_clks R8A7791_CLK_SCIFA5>; clock-names = "sci_ick"; + dmas = <&dmac0 0x23>, <&dmac0 0x24>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -563,6 +575,8 @@ interrupts = <0 148 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7791_CLK_SCIFB0>; clock-names = "sci_ick"; + dmas = <&dmac0 0x3d>, <&dmac0 0x3e>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -572,6 +586,8 @@ interrupts = <0 149 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7791_CLK_SCIFB1>; clock-names = "sci_ick"; + dmas = <&dmac0 0x19>, <&dmac0 0x1a>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -581,6 +597,8 @@ interrupts = <0 150 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7791_CLK_SCIFB2>; clock-names = "sci_ick"; + dmas = <&dmac0 0x1d>, <&dmac0 0x1e>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -590,6 +608,8 @@ interrupts = <0 152 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7791_CLK_SCIF0>; clock-names = "sci_ick"; + dmas = <&dmac0 0x29>, <&dmac0 0x2a>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -599,6 +619,8 @@ interrupts = <0 153 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7791_CLK_SCIF1>; clock-names = "sci_ick"; + dmas = <&dmac0 0x2d>, <&dmac0 0x2e>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -608,6 +630,8 @@ interrupts = <0 22 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7791_CLK_SCIF2>; clock-names = "sci_ick"; + dmas = <&dmac0 0x2b>, <&dmac0 0x2c>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -617,6 +641,8 @@ interrupts = <0 23 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7791_CLK_SCIF3>; clock-names = "sci_ick"; + dmas = <&dmac0 0x2f>, <&dmac0 0x30>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -626,6 +652,8 @@ interrupts = <0 24 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7791_CLK_SCIF4>; clock-names = "sci_ick"; + dmas = <&dmac0 0xfb>, <&dmac0 0xfc>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -635,6 +663,8 @@ interrupts = <0 25 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7791_CLK_SCIF5>; clock-names = "sci_ick"; + dmas = <&dmac0 0xfd>, <&dmac0 0xfe>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -644,6 +674,8 @@ interrupts = <0 154 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7791_CLK_HSCIF0>; clock-names = "sci_ick"; + dmas = <&dmac0 0x39>, <&dmac0 0x3a>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -653,6 +685,8 @@ interrupts = <0 155 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7791_CLK_HSCIF1>; clock-names = "sci_ick"; + dmas = <&dmac0 0x4d>, <&dmac0 0x4e>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -662,6 +696,8 @@ interrupts = <0 21 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7791_CLK_HSCIF2>; clock-names = "sci_ick"; + dmas = <&dmac0 0x3b>, <&dmac0 0x3c>; + dma-names = "tx", "rx"; status = "disabled"; }; -- cgit v1.2.3 From fe54e93ba86686c57521ec5436e459df23610c9f Mon Sep 17 00:00:00 2001 From: Geert Uytterhoeven Date: Wed, 20 May 2015 19:46:27 +0200 Subject: ARM: shmobile: r8a7794 dtsi: Describe DMA for the serial ports Add DMA properties to all SCIF, SCIFA, SCIFB, and HSCIF device nodes. Signed-off-by: Geert Uytterhoeven Signed-off-by: Greg Kroah-Hartman --- arch/arm/boot/dts/r8a7794.dtsi | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) (limited to 'arch/arm') diff --git a/arch/arm/boot/dts/r8a7794.dtsi b/arch/arm/boot/dts/r8a7794.dtsi index 7a3ffa51a8bf..7a84aaf2732f 100644 --- a/arch/arm/boot/dts/r8a7794.dtsi +++ b/arch/arm/boot/dts/r8a7794.dtsi @@ -173,6 +173,8 @@ interrupts = <0 144 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7794_CLK_SCIFA0>; clock-names = "sci_ick"; + dmas = <&dmac0 0x21>, <&dmac0 0x22>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -182,6 +184,8 @@ interrupts = <0 145 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7794_CLK_SCIFA1>; clock-names = "sci_ick"; + dmas = <&dmac0 0x25>, <&dmac0 0x26>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -191,6 +195,8 @@ interrupts = <0 151 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7794_CLK_SCIFA2>; clock-names = "sci_ick"; + dmas = <&dmac0 0x27>, <&dmac0 0x28>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -200,6 +206,8 @@ interrupts = <0 29 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp11_clks R8A7794_CLK_SCIFA3>; clock-names = "sci_ick"; + dmas = <&dmac0 0x1b>, <&dmac0 0x1c>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -209,6 +217,8 @@ interrupts = <0 30 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp11_clks R8A7794_CLK_SCIFA4>; clock-names = "sci_ick"; + dmas = <&dmac0 0x1f>, <&dmac0 0x20>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -218,6 +228,8 @@ interrupts = <0 31 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp11_clks R8A7794_CLK_SCIFA5>; clock-names = "sci_ick"; + dmas = <&dmac0 0x23>, <&dmac0 0x24>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -227,6 +239,8 @@ interrupts = <0 148 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7794_CLK_SCIFB0>; clock-names = "sci_ick"; + dmas = <&dmac0 0x3d>, <&dmac0 0x3e>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -236,6 +250,8 @@ interrupts = <0 149 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7794_CLK_SCIFB1>; clock-names = "sci_ick"; + dmas = <&dmac0 0x19>, <&dmac0 0x1a>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -245,6 +261,8 @@ interrupts = <0 150 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp2_clks R8A7794_CLK_SCIFB2>; clock-names = "sci_ick"; + dmas = <&dmac0 0x1d>, <&dmac0 0x1e>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -254,6 +272,8 @@ interrupts = <0 152 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7794_CLK_SCIF0>; clock-names = "sci_ick"; + dmas = <&dmac0 0x29>, <&dmac0 0x2a>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -263,6 +283,8 @@ interrupts = <0 153 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7794_CLK_SCIF1>; clock-names = "sci_ick"; + dmas = <&dmac0 0x2d>, <&dmac0 0x2e>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -272,6 +294,8 @@ interrupts = <0 22 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7794_CLK_SCIF2>; clock-names = "sci_ick"; + dmas = <&dmac0 0x2b>, <&dmac0 0x2c>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -281,6 +305,8 @@ interrupts = <0 23 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7794_CLK_SCIF3>; clock-names = "sci_ick"; + dmas = <&dmac0 0x2f>, <&dmac0 0x30>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -290,6 +316,8 @@ interrupts = <0 24 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7794_CLK_SCIF4>; clock-names = "sci_ick"; + dmas = <&dmac0 0xfb>, <&dmac0 0xfc>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -299,6 +327,8 @@ interrupts = <0 25 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7794_CLK_SCIF5>; clock-names = "sci_ick"; + dmas = <&dmac0 0xfd>, <&dmac0 0xfe>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -308,6 +338,8 @@ interrupts = <0 154 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7794_CLK_HSCIF0>; clock-names = "sci_ick"; + dmas = <&dmac0 0x39>, <&dmac0 0x3a>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -317,6 +349,8 @@ interrupts = <0 155 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7794_CLK_HSCIF1>; clock-names = "sci_ick"; + dmas = <&dmac0 0x4d>, <&dmac0 0x4e>; + dma-names = "tx", "rx"; status = "disabled"; }; @@ -326,6 +360,8 @@ interrupts = <0 21 IRQ_TYPE_LEVEL_HIGH>; clocks = <&mstp7_clks R8A7794_CLK_HSCIF2>; clock-names = "sci_ick"; + dmas = <&dmac0 0x3b>, <&dmac0 0x3c>; + dma-names = "tx", "rx"; status = "disabled"; }; -- cgit v1.2.3