diff --git a/Documentation/devicetree/bindings/misc/atmel-ssc.txt b/Documentation/devicetree/bindings/misc/atmel-ssc.txt new file mode 100644 index 000000000000..38e51ad2e07e --- /dev/null +++ b/Documentation/devicetree/bindings/misc/atmel-ssc.txt @@ -0,0 +1,15 @@ +* Atmel SSC driver. + +Required properties: +- compatible: "atmel,at91rm9200-ssc" or "atmel,at91sam9g45-ssc" + - atmel,at91rm9200-ssc: support pdc transfer + - atmel,at91sam9g45-ssc: support dma transfer +- reg: Should contain SSC registers location and length +- interrupts: Should contain SSC interrupt + +Example: +ssc0: ssc@fffbc000 { + compatible = "atmel,at91rm9200-ssc"; + reg = <0xfffbc000 0x4000>; + interrupts = <14 4 5>; +}; diff --git a/Documentation/devicetree/bindings/sound/atmel-at91sam9g20ek-wm8731-audio.txt b/Documentation/devicetree/bindings/sound/atmel-at91sam9g20ek-wm8731-audio.txt new file mode 100644 index 000000000000..9c5a9947b64d --- /dev/null +++ b/Documentation/devicetree/bindings/sound/atmel-at91sam9g20ek-wm8731-audio.txt @@ -0,0 +1,26 @@ +* Atmel at91sam9g20ek wm8731 audio complex + +Required properties: + - compatible: "atmel,at91sam9g20ek-wm8731-audio" + - atmel,model: The user-visible name of this sound complex. + - atmel,audio-routing: A list of the connections between audio components. + - atmel,ssc-controller: The phandle of the SSC controller + - atmel,audio-codec: The phandle of the WM8731 audio codec +Optional properties: + - pinctrl-names, pinctrl-0: Please refer to pinctrl-bindings.txt + +Example: +sound { + compatible = "atmel,at91sam9g20ek-wm8731-audio"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pck0_as_mck>; + + atmel,model = "wm8731 @ AT91SAMG20EK"; + + atmel,audio-routing = + "Ext Spk", "LHPOUT", + "Int MIC", "MICIN"; + + atmel,ssc-controller = <&ssc0>; + atmel,audio-codec = <&wm8731>; +}; diff --git a/arch/arm/boot/dts/at91sam9260.dtsi b/arch/arm/boot/dts/at91sam9260.dtsi index d410581a5a85..aaa42d8d4f88 100644 --- a/arch/arm/boot/dts/at91sam9260.dtsi +++ b/arch/arm/boot/dts/at91sam9260.dtsi @@ -29,6 +29,7 @@ tcb0 = &tcb0; tcb1 = &tcb1; i2c0 = &i2c0; + ssc0 = &ssc0; }; cpus { cpu@0 { @@ -212,6 +213,13 @@ status = "disabled"; }; + ssc0: ssc@fffbc000 { + compatible = "atmel,at91rm9200-ssc"; + reg = <0xfffbc000 0x4000>; + interrupts = <14 4 5>; + status = "disable"; + }; + adc0: adc@fffe0000 { compatible = "atmel,at91sam9260-adc"; reg = <0xfffe0000 0x100>; diff --git a/arch/arm/boot/dts/at91sam9263.dtsi b/arch/arm/boot/dts/at91sam9263.dtsi index 3e6e5c1abbf3..3b721ee59b10 100644 --- a/arch/arm/boot/dts/at91sam9263.dtsi +++ b/arch/arm/boot/dts/at91sam9263.dtsi @@ -25,6 +25,8 @@ gpio4 = &pioE; tcb0 = &tcb0; i2c0 = &i2c0; + ssc0 = &ssc0; + ssc1 = &ssc1; }; cpus { cpu@0 { @@ -173,6 +175,20 @@ status = "disabled"; }; + ssc0: ssc@fff98000 { + compatible = "atmel,at91rm9200-ssc"; + reg = <0xfff98000 0x4000>; + interrupts = <16 4 5>; + status = "disable"; + }; + + ssc1: ssc@fff9c000 { + compatible = "atmel,at91rm9200-ssc"; + reg = <0xfff9c000 0x4000>; + interrupts = <17 4 5>; + status = "disable"; + }; + macb0: ethernet@fffbc000 { compatible = "cdns,at32ap7000-macb", "cdns,macb"; reg = <0xfffbc000 0x100>; diff --git a/arch/arm/boot/dts/at91sam9g20ek_common.dtsi b/arch/arm/boot/dts/at91sam9g20ek_common.dtsi index e6391a4e6649..2dcec8de759f 100644 --- a/arch/arm/boot/dts/at91sam9g20ek_common.dtsi +++ b/arch/arm/boot/dts/at91sam9g20ek_common.dtsi @@ -30,6 +30,16 @@ ahb { apb { + pinctrl@fffff400 { + board { + pinctrl_pck0_as_mck: pck0_as_mck { + atmel,pins = + <2 1 0x2 0x0>; /* PC1 periph B */ + }; + + }; + }; + dbgu: serial@fffff200 { status = "okay"; }; @@ -51,6 +61,11 @@ atmel,vbus-gpio = <&pioC 5 0>; status = "okay"; }; + + ssc0: ssc@fffbc000 { + status = "okay"; + pinctrl-0 = <&pinctrl_ssc0_tx>; + }; }; nand0: nand@40000000 { @@ -114,7 +129,7 @@ reg = <0x50>; }; - wm8731@1b { + wm8731: wm8731@1b { compatible = "wm8731"; reg = <0x1b>; }; @@ -139,4 +154,19 @@ gpio-key,wakeup; }; }; + + sound { + compatible = "atmel,at91sam9g20ek-wm8731-audio"; + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pck0_as_mck>; + + atmel,model = "wm8731 @ AT91SAMG20EK"; + + atmel,audio-routing = + "Ext Spk", "LHPOUT", + "Int Mic", "MICIN"; + + atmel,ssc-controller = <&ssc0>; + atmel,audio-codec = <&wm8731>; + }; }; diff --git a/arch/arm/boot/dts/at91sam9g45.dtsi b/arch/arm/boot/dts/at91sam9g45.dtsi index 3add030d61f8..acfa207162ff 100644 --- a/arch/arm/boot/dts/at91sam9g45.dtsi +++ b/arch/arm/boot/dts/at91sam9g45.dtsi @@ -31,6 +31,8 @@ tcb1 = &tcb1; i2c0 = &i2c0; i2c1 = &i2c1; + ssc0 = &ssc0; + ssc1 = &ssc1; }; cpus { cpu@0 { @@ -226,6 +228,20 @@ status = "disabled"; }; + ssc0: ssc@fff9c000 { + compatible = "atmel,at91sam9g45-ssc"; + reg = <0xfff9c000 0x4000>; + interrupts = <16 4 5>; + status = "disable"; + }; + + ssc1: ssc@fffa0000 { + compatible = "atmel,at91sam9g45-ssc"; + reg = <0xfffa0000 0x4000>; + interrupts = <17 4 5>; + status = "disable"; + }; + adc0: adc@fffb0000 { compatible = "atmel,at91sam9260-adc"; reg = <0xfffb0000 0x100>; diff --git a/arch/arm/boot/dts/at91sam9x5.dtsi b/arch/arm/boot/dts/at91sam9x5.dtsi index 03fc136421c5..69667d0ac347 100644 --- a/arch/arm/boot/dts/at91sam9x5.dtsi +++ b/arch/arm/boot/dts/at91sam9x5.dtsi @@ -30,6 +30,7 @@ i2c0 = &i2c0; i2c1 = &i2c1; i2c2 = &i2c2; + ssc0 = &ssc0; }; cpus { cpu@0 { @@ -87,6 +88,13 @@ interrupts = <1 4 7>; }; + ssc0: ssc@f0010000 { + compatible = "atmel,at91sam9g45-ssc"; + reg = <0xf0010000 0x4000>; + interrupts = <28 4 5>; + status = "disable"; + }; + tcb0: timer@f8008000 { compatible = "atmel,at91sam9x5-tcb"; reg = <0xf8008000 0x100>; diff --git a/arch/arm/mach-at91/at91rm9200.c b/arch/arm/mach-at91/at91rm9200.c index 5269825194a8..af47c75db513 100644 --- a/arch/arm/mach-at91/at91rm9200.c +++ b/arch/arm/mach-at91/at91rm9200.c @@ -184,9 +184,12 @@ static struct clk_lookup periph_clocks_lookups[] = { CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tc3_clk), CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.1", &tc4_clk), CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.1", &tc5_clk), - CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk), - CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk), - CLKDEV_CON_DEV_ID("pclk", "ssc.2", &ssc2_clk), + CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc0_clk), + CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.1", &ssc1_clk), + CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.2", &ssc2_clk), + CLKDEV_CON_DEV_ID("pclk", "fffd0000.ssc", &ssc0_clk), + CLKDEV_CON_DEV_ID("pclk", "fffd4000.ssc", &ssc1_clk), + CLKDEV_CON_DEV_ID("pclk", "fffd8000.ssc", &ssc2_clk), CLKDEV_CON_DEV_ID(NULL, "i2c-at91rm9200.0", &twi_clk), /* fake hclk clock */ CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &ohci_clk), diff --git a/arch/arm/mach-at91/at91rm9200_devices.c b/arch/arm/mach-at91/at91rm9200_devices.c index 3cee0e6ea7c3..9e76427aaec2 100644 --- a/arch/arm/mach-at91/at91rm9200_devices.c +++ b/arch/arm/mach-at91/at91rm9200_devices.c @@ -752,7 +752,7 @@ static struct resource ssc0_resources[] = { }; static struct platform_device at91rm9200_ssc0_device = { - .name = "ssc", + .name = "at91rm9200_ssc", .id = 0, .dev = { .dma_mask = &ssc0_dmamask, @@ -794,7 +794,7 @@ static struct resource ssc1_resources[] = { }; static struct platform_device at91rm9200_ssc1_device = { - .name = "ssc", + .name = "at91rm9200_ssc", .id = 1, .dev = { .dma_mask = &ssc1_dmamask, @@ -836,7 +836,7 @@ static struct resource ssc2_resources[] = { }; static struct platform_device at91rm9200_ssc2_device = { - .name = "ssc", + .name = "at91rm9200_ssc", .id = 2, .dev = { .dma_mask = &ssc2_dmamask, diff --git a/arch/arm/mach-at91/at91sam9260.c b/arch/arm/mach-at91/at91sam9260.c index f8202615f4a8..a41eb3d23f68 100644 --- a/arch/arm/mach-at91/at91sam9260.c +++ b/arch/arm/mach-at91/at91sam9260.c @@ -210,7 +210,8 @@ static struct clk_lookup periph_clocks_lookups[] = { CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tc3_clk), CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.1", &tc4_clk), CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.1", &tc5_clk), - CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc_clk), + CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc_clk), + CLKDEV_CON_DEV_ID("pclk", "fffbc000.ssc", &ssc_clk), CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9260.0", &twi_clk), CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g20.0", &twi_clk), /* more usart lookup table for DT entries */ diff --git a/arch/arm/mach-at91/at91sam9260_devices.c b/arch/arm/mach-at91/at91sam9260_devices.c index 414bd855fb0c..e67cfa2acbe0 100644 --- a/arch/arm/mach-at91/at91sam9260_devices.c +++ b/arch/arm/mach-at91/at91sam9260_devices.c @@ -742,7 +742,7 @@ static struct resource ssc_resources[] = { }; static struct platform_device at91sam9260_ssc_device = { - .name = "ssc", + .name = "at91rm9200_ssc", .id = 0, .dev = { .dma_mask = &ssc_dmamask, diff --git a/arch/arm/mach-at91/at91sam9261.c b/arch/arm/mach-at91/at91sam9261.c index 04295c04b3e0..7fcbe0583342 100644 --- a/arch/arm/mach-at91/at91sam9261.c +++ b/arch/arm/mach-at91/at91sam9261.c @@ -174,9 +174,12 @@ static struct clk_lookup periph_clocks_lookups[] = { CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk), CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk), CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk), - CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk), - CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk), - CLKDEV_CON_DEV_ID("pclk", "ssc.2", &ssc2_clk), + CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc0_clk), + CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.1", &ssc1_clk), + CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.2", &ssc2_clk), + CLKDEV_CON_DEV_ID("pclk", "fffbc000.ssc", &ssc0_clk), + CLKDEV_CON_DEV_ID("pclk", "fffc0000.ssc", &ssc1_clk), + CLKDEV_CON_DEV_ID("pclk", "fffc4000.ssc", &ssc2_clk), CLKDEV_CON_DEV_ID("hclk", "at91_ohci", &hck0), CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9261.0", &twi_clk), CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g10.0", &twi_clk), diff --git a/arch/arm/mach-at91/at91sam9261_devices.c b/arch/arm/mach-at91/at91sam9261_devices.c index cd604aad8e96..a27d9dd0faa4 100644 --- a/arch/arm/mach-at91/at91sam9261_devices.c +++ b/arch/arm/mach-at91/at91sam9261_devices.c @@ -706,7 +706,7 @@ static struct resource ssc0_resources[] = { }; static struct platform_device at91sam9261_ssc0_device = { - .name = "ssc", + .name = "at91rm9200_ssc", .id = 0, .dev = { .dma_mask = &ssc0_dmamask, @@ -748,7 +748,7 @@ static struct resource ssc1_resources[] = { }; static struct platform_device at91sam9261_ssc1_device = { - .name = "ssc", + .name = "at91rm9200_ssc", .id = 1, .dev = { .dma_mask = &ssc1_dmamask, @@ -790,7 +790,7 @@ static struct resource ssc2_resources[] = { }; static struct platform_device at91sam9261_ssc2_device = { - .name = "ssc", + .name = "at91rm9200_ssc", .id = 2, .dev = { .dma_mask = &ssc2_dmamask, diff --git a/arch/arm/mach-at91/at91sam9263.c b/arch/arm/mach-at91/at91sam9263.c index d6f9c23927c4..c0f4c8c1f4ed 100644 --- a/arch/arm/mach-at91/at91sam9263.c +++ b/arch/arm/mach-at91/at91sam9263.c @@ -186,8 +186,10 @@ static struct clk *periph_clocks[] __initdata = { static struct clk_lookup periph_clocks_lookups[] = { /* One additional fake clock for macb_hclk */ CLKDEV_CON_ID("hclk", &macb_clk), - CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk), - CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk), + CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc0_clk), + CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.1", &ssc1_clk), + CLKDEV_CON_DEV_ID("pclk", "fff98000.ssc", &ssc0_clk), + CLKDEV_CON_DEV_ID("pclk", "fff9c000.ssc", &ssc1_clk), CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.0", &mmc0_clk), CLKDEV_CON_DEV_ID("mci_clk", "atmel_mci.1", &mmc1_clk), CLKDEV_CON_DEV_ID("spi_clk", "atmel_spi.0", &spi0_clk), diff --git a/arch/arm/mach-at91/at91sam9263_devices.c b/arch/arm/mach-at91/at91sam9263_devices.c index 9c61e59a2104..8215839f2d54 100644 --- a/arch/arm/mach-at91/at91sam9263_devices.c +++ b/arch/arm/mach-at91/at91sam9263_devices.c @@ -1199,7 +1199,7 @@ static struct resource ssc0_resources[] = { }; static struct platform_device at91sam9263_ssc0_device = { - .name = "ssc", + .name = "at91rm9200_ssc", .id = 0, .dev = { .dma_mask = &ssc0_dmamask, @@ -1241,7 +1241,7 @@ static struct resource ssc1_resources[] = { }; static struct platform_device at91sam9263_ssc1_device = { - .name = "ssc", + .name = "at91rm9200_ssc", .id = 1, .dev = { .dma_mask = &ssc1_dmamask, diff --git a/arch/arm/mach-at91/at91sam9g45.c b/arch/arm/mach-at91/at91sam9g45.c index 84af1b506d92..a4282d3742bf 100644 --- a/arch/arm/mach-at91/at91sam9g45.c +++ b/arch/arm/mach-at91/at91sam9g45.c @@ -239,8 +239,10 @@ static struct clk_lookup periph_clocks_lookups[] = { CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.1", &tcb0_clk), CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g10.0", &twi0_clk), CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g10.1", &twi1_clk), - CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk), - CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk), + CLKDEV_CON_DEV_ID("pclk", "at91sam9g45_ssc.0", &ssc0_clk), + CLKDEV_CON_DEV_ID("pclk", "at91sam9g45_ssc.1", &ssc1_clk), + CLKDEV_CON_DEV_ID("pclk", "fff9c000.ssc", &ssc0_clk), + CLKDEV_CON_DEV_ID("pclk", "fffa0000.ssc", &ssc1_clk), CLKDEV_CON_DEV_ID(NULL, "atmel-trng", &trng_clk), CLKDEV_CON_DEV_ID(NULL, "atmel_sha", &aestdessha_clk), CLKDEV_CON_DEV_ID(NULL, "atmel_tdes", &aestdessha_clk), diff --git a/arch/arm/mach-at91/at91sam9g45_devices.c b/arch/arm/mach-at91/at91sam9g45_devices.c index fcd233cb33d2..d26474a97fec 100644 --- a/arch/arm/mach-at91/at91sam9g45_devices.c +++ b/arch/arm/mach-at91/at91sam9g45_devices.c @@ -1459,7 +1459,7 @@ static struct resource ssc0_resources[] = { }; static struct platform_device at91sam9g45_ssc0_device = { - .name = "ssc", + .name = "at91sam9g45_ssc", .id = 0, .dev = { .dma_mask = &ssc0_dmamask, @@ -1501,7 +1501,7 @@ static struct resource ssc1_resources[] = { }; static struct platform_device at91sam9g45_ssc1_device = { - .name = "ssc", + .name = "at91sam9g45_ssc", .id = 1, .dev = { .dma_mask = &ssc1_dmamask, diff --git a/arch/arm/mach-at91/at91sam9rl.c b/arch/arm/mach-at91/at91sam9rl.c index 72e908412222..b683fdc699f1 100644 --- a/arch/arm/mach-at91/at91sam9rl.c +++ b/arch/arm/mach-at91/at91sam9rl.c @@ -184,8 +184,10 @@ static struct clk_lookup periph_clocks_lookups[] = { CLKDEV_CON_DEV_ID("t0_clk", "atmel_tcb.0", &tc0_clk), CLKDEV_CON_DEV_ID("t1_clk", "atmel_tcb.0", &tc1_clk), CLKDEV_CON_DEV_ID("t2_clk", "atmel_tcb.0", &tc2_clk), - CLKDEV_CON_DEV_ID("pclk", "ssc.0", &ssc0_clk), - CLKDEV_CON_DEV_ID("pclk", "ssc.1", &ssc1_clk), + CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.0", &ssc0_clk), + CLKDEV_CON_DEV_ID("pclk", "at91rm9200_ssc.1", &ssc1_clk), + CLKDEV_CON_DEV_ID("pclk", "fffc0000.ssc", &ssc0_clk), + CLKDEV_CON_DEV_ID("pclk", "fffc4000.ssc", &ssc1_clk), CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g20.0", &twi0_clk), CLKDEV_CON_DEV_ID(NULL, "i2c-at91sam9g20.1", &twi1_clk), CLKDEV_CON_ID("pioA", &pioA_clk), diff --git a/arch/arm/mach-at91/at91sam9rl_devices.c b/arch/arm/mach-at91/at91sam9rl_devices.c index 5047bdc92adf..b656110e8afe 100644 --- a/arch/arm/mach-at91/at91sam9rl_devices.c +++ b/arch/arm/mach-at91/at91sam9rl_devices.c @@ -832,7 +832,7 @@ static struct resource ssc0_resources[] = { }; static struct platform_device at91sam9rl_ssc0_device = { - .name = "ssc", + .name = "at91rm9200_ssc", .id = 0, .dev = { .dma_mask = &ssc0_dmamask, @@ -874,7 +874,7 @@ static struct resource ssc1_resources[] = { }; static struct platform_device at91sam9rl_ssc1_device = { - .name = "ssc", + .name = "at91rm9200_ssc", .id = 1, .dev = { .dma_mask = &ssc1_dmamask, diff --git a/arch/arm/mach-at91/at91sam9x5.c b/arch/arm/mach-at91/at91sam9x5.c index e5035380dcbc..18fbbb27f97f 100644 --- a/arch/arm/mach-at91/at91sam9x5.c +++ b/arch/arm/mach-at91/at91sam9x5.c @@ -231,6 +231,7 @@ static struct clk_lookup periph_clocks_lookups[] = { CLKDEV_CON_DEV_ID("t0_clk", "f800c000.timer", &tcb0_clk), CLKDEV_CON_DEV_ID("dma_clk", "ffffec00.dma-controller", &dma0_clk), CLKDEV_CON_DEV_ID("dma_clk", "ffffee00.dma-controller", &dma1_clk), + CLKDEV_CON_DEV_ID("pclk", "f0010000.ssc", &ssc_clk), CLKDEV_CON_DEV_ID(NULL, "f8010000.i2c", &twi0_clk), CLKDEV_CON_DEV_ID(NULL, "f8014000.i2c", &twi1_clk), CLKDEV_CON_DEV_ID(NULL, "f8018000.i2c", &twi2_clk), diff --git a/arch/arm/mach-at91/board-sam9g20ek.c b/arch/arm/mach-at91/board-sam9g20ek.c index 3ab2b86a3762..ebdbf42c02c1 100644 --- a/arch/arm/mach-at91/board-sam9g20ek.c +++ b/arch/arm/mach-at91/board-sam9g20ek.c @@ -353,6 +353,16 @@ static struct i2c_board_info __initdata ek_i2c_devices[] = { }, }; +static struct platform_device sam9g20ek_audio_device = { + .name = "at91sam9g20ek-audio", + .id = -1, +}; + +static void __init ek_add_device_audio(void) +{ + platform_device_register(&sam9g20ek_audio_device); +} + static void __init ek_board_init(void) { @@ -394,6 +404,7 @@ static void __init ek_board_init(void) at91_set_B_periph(AT91_PIN_PC1, 0); /* SSC (for WM8731) */ at91_add_device_ssc(AT91SAM9260_ID_SSC, ATMEL_SSC_TX); + ek_add_device_audio(); } MACHINE_START(AT91SAM9G20EK, "Atmel AT91SAM9G20-EK") diff --git a/drivers/misc/atmel-ssc.c b/drivers/misc/atmel-ssc.c index 5bb187781074..d07a9eda7fff 100644 --- a/drivers/misc/atmel-ssc.c +++ b/drivers/misc/atmel-ssc.c @@ -18,6 +18,8 @@ #include #include +#include + /* Serialize access to ssc_list and user count */ static DEFINE_SPINLOCK(user_lock); static LIST_HEAD(ssc_list); @@ -29,7 +31,13 @@ struct ssc_device *ssc_request(unsigned int ssc_num) spin_lock(&user_lock); list_for_each_entry(ssc, &ssc_list, list) { - if (ssc->pdev->id == ssc_num) { + if (ssc->pdev->dev.of_node) { + if (of_alias_get_id(ssc->pdev->dev.of_node, "ssc") + == ssc_num) { + ssc_valid = 1; + break; + } + } else if (ssc->pdev->id == ssc_num) { ssc_valid = 1; break; } @@ -68,39 +76,93 @@ void ssc_free(struct ssc_device *ssc) } EXPORT_SYMBOL(ssc_free); -static int __init ssc_probe(struct platform_device *pdev) +static struct atmel_ssc_platform_data at91rm9200_config = { + .use_dma = 0, +}; + +static struct atmel_ssc_platform_data at91sam9g45_config = { + .use_dma = 1, +}; + +static const struct platform_device_id atmel_ssc_devtypes[] = { + { + .name = "at91rm9200_ssc", + .driver_data = (unsigned long) &at91rm9200_config, + }, { + .name = "at91sam9g45_ssc", + .driver_data = (unsigned long) &at91sam9g45_config, + }, { + /* sentinel */ + } +}; + +#ifdef CONFIG_OF +static const struct of_device_id atmel_ssc_dt_ids[] = { + { + .compatible = "atmel,at91rm9200-ssc", + .data = &at91rm9200_config, + }, { + .compatible = "atmel,at91sam9g45-ssc", + .data = &at91sam9g45_config, + }, { + /* sentinel */ + } +}; +MODULE_DEVICE_TABLE(of, atmel_ssc_dt_ids); +#endif + +static inline const struct atmel_ssc_platform_data * __init + atmel_ssc_get_driver_data(struct platform_device *pdev) +{ + if (pdev->dev.of_node) { + const struct of_device_id *match; + match = of_match_node(atmel_ssc_dt_ids, pdev->dev.of_node); + if (match == NULL) + return NULL; + return match->data; + } + + return (struct atmel_ssc_platform_data *) + platform_get_device_id(pdev)->driver_data; +} + +static int ssc_probe(struct platform_device *pdev) { - int retval = 0; struct resource *regs; struct ssc_device *ssc; + const struct atmel_ssc_platform_data *plat_dat; - ssc = kzalloc(sizeof(struct ssc_device), GFP_KERNEL); + ssc = devm_kzalloc(&pdev->dev, sizeof(struct ssc_device), GFP_KERNEL); if (!ssc) { dev_dbg(&pdev->dev, "out of memory\n"); - retval = -ENOMEM; - goto out; + return -ENOMEM; } + ssc->pdev = pdev; + + plat_dat = atmel_ssc_get_driver_data(pdev); + if (!plat_dat) + return -ENODEV; + ssc->pdata = (struct atmel_ssc_platform_data *)plat_dat; + regs = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!regs) { dev_dbg(&pdev->dev, "no mmio resource defined\n"); - retval = -ENXIO; - goto out_free; + return -ENXIO; } - ssc->clk = clk_get(&pdev->dev, "pclk"); - if (IS_ERR(ssc->clk)) { - dev_dbg(&pdev->dev, "no pclk clock defined\n"); - retval = -ENXIO; - goto out_free; - } - - ssc->pdev = pdev; - ssc->regs = ioremap(regs->start, resource_size(regs)); + ssc->regs = devm_request_and_ioremap(&pdev->dev, regs); if (!ssc->regs) { dev_dbg(&pdev->dev, "ioremap failed\n"); - retval = -EINVAL; - goto out_clk; + return -EINVAL; + } + + ssc->phybase = regs->start; + + ssc->clk = devm_clk_get(&pdev->dev, "pclk"); + if (IS_ERR(ssc->clk)) { + dev_dbg(&pdev->dev, "no pclk clock defined\n"); + return -ENXIO; } /* disable all interrupts */ @@ -112,8 +174,7 @@ static int __init ssc_probe(struct platform_device *pdev) ssc->irq = platform_get_irq(pdev, 0); if (!ssc->irq) { dev_dbg(&pdev->dev, "could not get irq\n"); - retval = -ENXIO; - goto out_unmap; + return -ENXIO; } spin_lock(&user_lock); @@ -125,16 +186,7 @@ static int __init ssc_probe(struct platform_device *pdev) dev_info(&pdev->dev, "Atmel SSC device at 0x%p (irq %d)\n", ssc->regs, ssc->irq); - goto out; - -out_unmap: - iounmap(ssc->regs); -out_clk: - clk_put(ssc->clk); -out_free: - kfree(ssc); -out: - return retval; + return 0; } static int __devexit ssc_remove(struct platform_device *pdev) @@ -142,34 +194,23 @@ static int __devexit ssc_remove(struct platform_device *pdev) struct ssc_device *ssc = platform_get_drvdata(pdev); spin_lock(&user_lock); - iounmap(ssc->regs); - clk_put(ssc->clk); list_del(&ssc->list); - kfree(ssc); spin_unlock(&user_lock); return 0; } static struct platform_driver ssc_driver = { - .remove = __devexit_p(ssc_remove), .driver = { .name = "ssc", .owner = THIS_MODULE, + .of_match_table = of_match_ptr(atmel_ssc_dt_ids), }, + .id_table = atmel_ssc_devtypes, + .probe = ssc_probe, + .remove = __devexit_p(ssc_remove), }; - -static int __init ssc_init(void) -{ - return platform_driver_probe(&ssc_driver, ssc_probe); -} -module_init(ssc_init); - -static void __exit ssc_exit(void) -{ - platform_driver_unregister(&ssc_driver); -} -module_exit(ssc_exit); +module_platform_driver(ssc_driver); MODULE_AUTHOR("Hans-Christian Egtvedt "); MODULE_DESCRIPTION("SSC driver for Atmel AVR32 and AT91"); diff --git a/include/linux/atmel-ssc.h b/include/linux/atmel-ssc.h index 4eb31752e2b7..deb0ae58b99b 100644 --- a/include/linux/atmel-ssc.h +++ b/include/linux/atmel-ssc.h @@ -5,10 +5,16 @@ #include #include +struct atmel_ssc_platform_data { + int use_dma; +}; + struct ssc_device { struct list_head list; + resource_size_t phybase; void __iomem *regs; struct platform_device *pdev; + struct atmel_ssc_platform_data *pdata; struct clk *clk; int user; int irq; diff --git a/sound/soc/atmel/Kconfig b/sound/soc/atmel/Kconfig index 72b09cfd3dc3..d1b691bf8e2d 100644 --- a/sound/soc/atmel/Kconfig +++ b/sound/soc/atmel/Kconfig @@ -6,6 +6,14 @@ config SND_ATMEL_SOC the ATMEL SSC interface. You will also need to select the audio interfaces to support below. +config SND_ATMEL_SOC_PDC + tristate + depends on SND_ATMEL_SOC + +config SND_ATMEL_SOC_DMA + tristate + depends on SND_ATMEL_SOC + config SND_ATMEL_SOC_SSC tristate depends on SND_ATMEL_SOC @@ -16,8 +24,8 @@ config SND_ATMEL_SOC_SSC config SND_AT91_SOC_SAM9G20_WM8731 tristate "SoC Audio support for WM8731-based At91sam9g20 evaluation board" - depends on ATMEL_SSC && ARCH_AT91SAM9G20 && SND_ATMEL_SOC && \ - AT91_PROGRAMMABLE_CLOCKS + depends on ATMEL_SSC && SND_ATMEL_SOC && AT91_PROGRAMMABLE_CLOCKS + select SND_ATMEL_SOC_PDC select SND_ATMEL_SOC_SSC select SND_SOC_WM8731 help @@ -27,6 +35,7 @@ config SND_AT91_SOC_SAM9G20_WM8731 config SND_AT91_SOC_AFEB9260 tristate "SoC Audio support for AFEB9260 board" depends on ATMEL_SSC && ARCH_AT91 && MACH_AFEB9260 && SND_ATMEL_SOC + select SND_ATMEL_SOC_PDC select SND_ATMEL_SOC_SSC select SND_SOC_TLV320AIC23 help diff --git a/sound/soc/atmel/Makefile b/sound/soc/atmel/Makefile index a5c0bf19da78..41967ccb6f41 100644 --- a/sound/soc/atmel/Makefile +++ b/sound/soc/atmel/Makefile @@ -1,8 +1,12 @@ # AT91 Platform Support snd-soc-atmel-pcm-objs := atmel-pcm.o +snd-soc-atmel-pcm-pdc-objs := atmel-pcm-pdc.o +snd-soc-atmel-pcm-dma-objs := atmel-pcm-dma.o snd-soc-atmel_ssc_dai-objs := atmel_ssc_dai.o obj-$(CONFIG_SND_ATMEL_SOC) += snd-soc-atmel-pcm.o +obj-$(CONFIG_SND_ATMEL_SOC_PDC) += snd-soc-atmel-pcm-pdc.o +obj-$(CONFIG_SND_ATMEL_SOC_DMA) += snd-soc-atmel-pcm-dma.o obj-$(CONFIG_SND_ATMEL_SOC_SSC) += snd-soc-atmel_ssc_dai.o # AT91 Machine Support diff --git a/sound/soc/atmel/atmel-pcm-dma.c b/sound/soc/atmel/atmel-pcm-dma.c new file mode 100644 index 000000000000..30184a4a147a --- /dev/null +++ b/sound/soc/atmel/atmel-pcm-dma.c @@ -0,0 +1,240 @@ +/* + * atmel-pcm-dma.c -- ALSA PCM DMA support for the Atmel SoC. + * + * Copyright (C) 2012 Atmel + * + * Author: Bo Shen + * + * Based on atmel-pcm by: + * Sedji Gaouaou + * Copyright 2008 Atmel + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include +#include + +#include "atmel-pcm.h" + +/*--------------------------------------------------------------------------*\ + * Hardware definition +\*--------------------------------------------------------------------------*/ +static const struct snd_pcm_hardware atmel_pcm_dma_hardware = { + .info = SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_RESUME | + SNDRV_PCM_INFO_PAUSE, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + .period_bytes_min = 256, /* lighting DMA overhead */ + .period_bytes_max = 2 * 0xffff, /* if 2 bytes format */ + .periods_min = 8, + .periods_max = 1024, /* no limit */ + .buffer_bytes_max = ATMEL_SSC_DMABUF_SIZE, +}; + +/** + * atmel_pcm_dma_irq: SSC interrupt handler for DMAENGINE enabled SSC + * + * We use DMAENGINE to send/receive data to/from SSC so this ISR is only to + * check if any overrun occured. + */ +static void atmel_pcm_dma_irq(u32 ssc_sr, + struct snd_pcm_substream *substream) +{ + struct atmel_pcm_dma_params *prtd; + + prtd = snd_dmaengine_pcm_get_data(substream); + + if (ssc_sr & prtd->mask->ssc_error) { + if (snd_pcm_running(substream)) + pr_warn("atmel-pcm: buffer %s on %s (SSC_SR=%#x)\n", + substream->stream == SNDRV_PCM_STREAM_PLAYBACK + ? "underrun" : "overrun", prtd->name, + ssc_sr); + + /* stop RX and capture: will be enabled again at restart */ + ssc_writex(prtd->ssc->regs, SSC_CR, prtd->mask->ssc_disable); + snd_pcm_stop(substream, SNDRV_PCM_STATE_XRUN); + + /* now drain RHR and read status to remove xrun condition */ + ssc_readx(prtd->ssc->regs, SSC_RHR); + ssc_readx(prtd->ssc->regs, SSC_SR); + } +} + +/*--------------------------------------------------------------------------*\ + * DMAENGINE operations +\*--------------------------------------------------------------------------*/ +static bool filter(struct dma_chan *chan, void *slave) +{ + struct at_dma_slave *sl = slave; + + if (sl->dma_dev == chan->device->dev) { + chan->private = sl; + return true; + } else { + return false; + } +} + +static int atmel_pcm_configure_dma(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct atmel_pcm_dma_params *prtd; + struct ssc_device *ssc; + struct dma_chan *dma_chan; + struct dma_slave_config slave_config; + int ret; + + prtd = snd_dmaengine_pcm_get_data(substream); + ssc = prtd->ssc; + + ret = snd_hwparams_to_dma_slave_config(substream, params, + &slave_config); + if (ret) { + pr_err("atmel-pcm: hwparams to dma slave configure failed\n"); + return ret; + } + + if (substream->stream == SNDRV_PCM_STREAM_PLAYBACK) { + slave_config.dst_addr = (dma_addr_t)ssc->phybase + SSC_THR; + slave_config.dst_maxburst = 1; + } else { + slave_config.src_addr = (dma_addr_t)ssc->phybase + SSC_RHR; + slave_config.src_maxburst = 1; + } + + slave_config.device_fc = false; + + dma_chan = snd_dmaengine_pcm_get_chan(substream); + if (dmaengine_slave_config(dma_chan, &slave_config)) { + pr_err("atmel-pcm: failed to configure dma channel\n"); + ret = -EBUSY; + return ret; + } + + return 0; +} + +static int atmel_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_soc_pcm_runtime *rtd = substream->private_data; + struct atmel_pcm_dma_params *prtd; + struct ssc_device *ssc; + struct at_dma_slave *sdata = NULL; + int ret; + + snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); + + prtd = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); + ssc = prtd->ssc; + if (ssc->pdev) + sdata = ssc->pdev->dev.platform_data; + + ret = snd_dmaengine_pcm_open(substream, filter, sdata); + if (ret) { + pr_err("atmel-pcm: dmaengine pcm open failed\n"); + return -EINVAL; + } + + snd_dmaengine_pcm_set_data(substream, prtd); + + ret = atmel_pcm_configure_dma(substream, params); + if (ret) { + pr_err("atmel-pcm: failed to configure dmai\n"); + goto err; + } + + prtd->dma_intr_handler = atmel_pcm_dma_irq; + + return 0; +err: + snd_dmaengine_pcm_close(substream); + return ret; +} + +static int atmel_pcm_dma_prepare(struct snd_pcm_substream *substream) +{ + struct atmel_pcm_dma_params *prtd; + + prtd = snd_dmaengine_pcm_get_data(substream); + + ssc_writex(prtd->ssc->regs, SSC_IER, prtd->mask->ssc_error); + ssc_writex(prtd->ssc->regs, SSC_CR, prtd->mask->ssc_enable); + + return 0; +} + +static int atmel_pcm_open(struct snd_pcm_substream *substream) +{ + snd_soc_set_runtime_hwparams(substream, &atmel_pcm_dma_hardware); + + return 0; +} + +static int atmel_pcm_close(struct snd_pcm_substream *substream) +{ + snd_dmaengine_pcm_close(substream); + + return 0; +} + +static struct snd_pcm_ops atmel_pcm_ops = { + .open = atmel_pcm_open, + .close = atmel_pcm_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = atmel_pcm_hw_params, + .prepare = atmel_pcm_dma_prepare, + .trigger = snd_dmaengine_pcm_trigger, + .pointer = snd_dmaengine_pcm_pointer_no_residue, + .mmap = atmel_pcm_mmap, +}; + +static struct snd_soc_platform_driver atmel_soc_platform = { + .ops = &atmel_pcm_ops, + .pcm_new = atmel_pcm_new, + .pcm_free = atmel_pcm_free, +}; + +int atmel_pcm_dma_platform_register(struct device *dev) +{ + return snd_soc_register_platform(dev, &atmel_soc_platform); +} +EXPORT_SYMBOL(atmel_pcm_dma_platform_register); + +void atmel_pcm_dma_platform_unregister(struct device *dev) +{ + snd_soc_unregister_platform(dev); +} +EXPORT_SYMBOL(atmel_pcm_dma_platform_unregister); + +MODULE_AUTHOR("Bo Shen "); +MODULE_DESCRIPTION("Atmel DMA based PCM module"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/atmel/atmel-pcm-pdc.c b/sound/soc/atmel/atmel-pcm-pdc.c new file mode 100644 index 000000000000..6a293c713a38 --- /dev/null +++ b/sound/soc/atmel/atmel-pcm-pdc.c @@ -0,0 +1,401 @@ +/* + * atmel-pcm.c -- ALSA PCM interface for the Atmel atmel SoC. + * + * Copyright (C) 2005 SAN People + * Copyright (C) 2008 Atmel + * + * Authors: Sedji Gaouaou + * + * Based on at91-pcm. by: + * Frank Mandarino + * Copyright 2006 Endrelia Technologies Inc. + * + * Based on pxa2xx-pcm.c by: + * + * Author: Nicolas Pitre + * Created: Nov 30, 2004 + * Copyright: (C) 2004 MontaVista Software, Inc. + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License as published by + * the Free Software Foundation; either version 2 of the License, or + * (at your option) any later version. + * + * This program is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the + * GNU General Public License for more details. + * + * You should have received a copy of the GNU General Public License + * along with this program; if not, write to the Free Software + * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA + */ + +#include +#include +#include +#include +#include +#include +#include + +#include +#include +#include +#include + +#include "atmel-pcm.h" + + +/*--------------------------------------------------------------------------*\ + * Hardware definition +\*--------------------------------------------------------------------------*/ +/* TODO: These values were taken from the AT91 platform driver, check + * them against real values for AT32 + */ +static const struct snd_pcm_hardware atmel_pcm_hardware = { + .info = SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID | + SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_PAUSE, + .formats = SNDRV_PCM_FMTBIT_S16_LE, + .period_bytes_min = 32, + .period_bytes_max = 8192, + .periods_min = 2, + .periods_max = 1024, + .buffer_bytes_max = ATMEL_SSC_DMABUF_SIZE, +}; + + +/*--------------------------------------------------------------------------*\ + * Data types +\*--------------------------------------------------------------------------*/ +struct atmel_runtime_data { + struct atmel_pcm_dma_params *params; + dma_addr_t dma_buffer; /* physical address of dma buffer */ + dma_addr_t dma_buffer_end; /* first address beyond DMA buffer */ + size_t period_size; + + dma_addr_t period_ptr; /* physical address of next period */ + + /* PDC register save */ + u32 pdc_xpr_save; + u32 pdc_xcr_save; + u32 pdc_xnpr_save; + u32 pdc_xncr_save; +}; + +/*--------------------------------------------------------------------------*\ + * ISR +\*--------------------------------------------------------------------------*/ +static void atmel_pcm_dma_irq(u32 ssc_sr, + struct snd_pcm_substream *substream) +{ + struct atmel_runtime_data *prtd = substream->runtime->private_data; + struct atmel_pcm_dma_params *params = prtd->params; + static int count; + + count++; + + if (ssc_sr & params->mask->ssc_endbuf) { + pr_warn("atmel-pcm: buffer %s on %s (SSC_SR=%#x, count=%d)\n", + substream->stream == SNDRV_PCM_STREAM_PLAYBACK + ? "underrun" : "overrun", + params->name, ssc_sr, count); + + /* re-start the PDC */ + ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR, + params->mask->pdc_disable); + prtd->period_ptr += prtd->period_size; + if (prtd->period_ptr >= prtd->dma_buffer_end) + prtd->period_ptr = prtd->dma_buffer; + + ssc_writex(params->ssc->regs, params->pdc->xpr, + prtd->period_ptr); + ssc_writex(params->ssc->regs, params->pdc->xcr, + prtd->period_size / params->pdc_xfer_size); + ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR, + params->mask->pdc_enable); + } + + if (ssc_sr & params->mask->ssc_endx) { + /* Load the PDC next pointer and counter registers */ + prtd->period_ptr += prtd->period_size; + if (prtd->period_ptr >= prtd->dma_buffer_end) + prtd->period_ptr = prtd->dma_buffer; + + ssc_writex(params->ssc->regs, params->pdc->xnpr, + prtd->period_ptr); + ssc_writex(params->ssc->regs, params->pdc->xncr, + prtd->period_size / params->pdc_xfer_size); + } + + snd_pcm_period_elapsed(substream); +} + + +/*--------------------------------------------------------------------------*\ + * PCM operations +\*--------------------------------------------------------------------------*/ +static int atmel_pcm_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct atmel_runtime_data *prtd = runtime->private_data; + struct snd_soc_pcm_runtime *rtd = substream->private_data; + + /* this may get called several times by oss emulation + * with different params */ + + snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); + runtime->dma_bytes = params_buffer_bytes(params); + + prtd->params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); + prtd->params->dma_intr_handler = atmel_pcm_dma_irq; + + prtd->dma_buffer = runtime->dma_addr; + prtd->dma_buffer_end = runtime->dma_addr + runtime->dma_bytes; + prtd->period_size = params_period_bytes(params); + + pr_debug("atmel-pcm: " + "hw_params: DMA for %s initialized " + "(dma_bytes=%u, period_size=%u)\n", + prtd->params->name, + runtime->dma_bytes, + prtd->period_size); + return 0; +} + +static int atmel_pcm_hw_free(struct snd_pcm_substream *substream) +{ + struct atmel_runtime_data *prtd = substream->runtime->private_data; + struct atmel_pcm_dma_params *params = prtd->params; + + if (params != NULL) { + ssc_writex(params->ssc->regs, SSC_PDC_PTCR, + params->mask->pdc_disable); + prtd->params->dma_intr_handler = NULL; + } + + return 0; +} + +static int atmel_pcm_prepare(struct snd_pcm_substream *substream) +{ + struct atmel_runtime_data *prtd = substream->runtime->private_data; + struct atmel_pcm_dma_params *params = prtd->params; + + ssc_writex(params->ssc->regs, SSC_IDR, + params->mask->ssc_endx | params->mask->ssc_endbuf); + ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR, + params->mask->pdc_disable); + return 0; +} + +static int atmel_pcm_trigger(struct snd_pcm_substream *substream, + int cmd) +{ + struct snd_pcm_runtime *rtd = substream->runtime; + struct atmel_runtime_data *prtd = rtd->private_data; + struct atmel_pcm_dma_params *params = prtd->params; + int ret = 0; + + pr_debug("atmel-pcm:buffer_size = %ld," + "dma_area = %p, dma_bytes = %u\n", + rtd->buffer_size, rtd->dma_area, rtd->dma_bytes); + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + prtd->period_ptr = prtd->dma_buffer; + + ssc_writex(params->ssc->regs, params->pdc->xpr, + prtd->period_ptr); + ssc_writex(params->ssc->regs, params->pdc->xcr, + prtd->period_size / params->pdc_xfer_size); + + prtd->period_ptr += prtd->period_size; + ssc_writex(params->ssc->regs, params->pdc->xnpr, + prtd->period_ptr); + ssc_writex(params->ssc->regs, params->pdc->xncr, + prtd->period_size / params->pdc_xfer_size); + + pr_debug("atmel-pcm: trigger: " + "period_ptr=%lx, xpr=%u, " + "xcr=%u, xnpr=%u, xncr=%u\n", + (unsigned long)prtd->period_ptr, + ssc_readx(params->ssc->regs, params->pdc->xpr), + ssc_readx(params->ssc->regs, params->pdc->xcr), + ssc_readx(params->ssc->regs, params->pdc->xnpr), + ssc_readx(params->ssc->regs, params->pdc->xncr)); + + ssc_writex(params->ssc->regs, SSC_IER, + params->mask->ssc_endx | params->mask->ssc_endbuf); + ssc_writex(params->ssc->regs, SSC_PDC_PTCR, + params->mask->pdc_enable); + + pr_debug("sr=%u imr=%u\n", + ssc_readx(params->ssc->regs, SSC_SR), + ssc_readx(params->ssc->regs, SSC_IER)); + break; /* SNDRV_PCM_TRIGGER_START */ + + case SNDRV_PCM_TRIGGER_STOP: + case SNDRV_PCM_TRIGGER_SUSPEND: + case SNDRV_PCM_TRIGGER_PAUSE_PUSH: + ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR, + params->mask->pdc_disable); + break; + + case SNDRV_PCM_TRIGGER_RESUME: + case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: + ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR, + params->mask->pdc_enable); + break; + + default: + ret = -EINVAL; + } + + return ret; +} + +static snd_pcm_uframes_t atmel_pcm_pointer( + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct atmel_runtime_data *prtd = runtime->private_data; + struct atmel_pcm_dma_params *params = prtd->params; + dma_addr_t ptr; + snd_pcm_uframes_t x; + + ptr = (dma_addr_t) ssc_readx(params->ssc->regs, params->pdc->xpr); + x = bytes_to_frames(runtime, ptr - prtd->dma_buffer); + + if (x == runtime->buffer_size) + x = 0; + + return x; +} + +static int atmel_pcm_open(struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + struct atmel_runtime_data *prtd; + int ret = 0; + + snd_soc_set_runtime_hwparams(substream, &atmel_pcm_hardware); + + /* ensure that buffer size is a multiple of period size */ + ret = snd_pcm_hw_constraint_integer(runtime, + SNDRV_PCM_HW_PARAM_PERIODS); + if (ret < 0) + goto out; + + prtd = kzalloc(sizeof(struct atmel_runtime_data), GFP_KERNEL); + if (prtd == NULL) { + ret = -ENOMEM; + goto out; + } + runtime->private_data = prtd; + + out: + return ret; +} + +static int atmel_pcm_close(struct snd_pcm_substream *substream) +{ + struct atmel_runtime_data *prtd = substream->runtime->private_data; + + kfree(prtd); + return 0; +} + +static struct snd_pcm_ops atmel_pcm_ops = { + .open = atmel_pcm_open, + .close = atmel_pcm_close, + .ioctl = snd_pcm_lib_ioctl, + .hw_params = atmel_pcm_hw_params, + .hw_free = atmel_pcm_hw_free, + .prepare = atmel_pcm_prepare, + .trigger = atmel_pcm_trigger, + .pointer = atmel_pcm_pointer, + .mmap = atmel_pcm_mmap, +}; + + +/*--------------------------------------------------------------------------*\ + * ASoC platform driver +\*--------------------------------------------------------------------------*/ +#ifdef CONFIG_PM +static int atmel_pcm_suspend(struct snd_soc_dai *dai) +{ + struct snd_pcm_runtime *runtime = dai->runtime; + struct atmel_runtime_data *prtd; + struct atmel_pcm_dma_params *params; + + if (!runtime) + return 0; + + prtd = runtime->private_data; + params = prtd->params; + + /* disable the PDC and save the PDC registers */ + + ssc_writel(params->ssc->regs, PDC_PTCR, params->mask->pdc_disable); + + prtd->pdc_xpr_save = ssc_readx(params->ssc->regs, params->pdc->xpr); + prtd->pdc_xcr_save = ssc_readx(params->ssc->regs, params->pdc->xcr); + prtd->pdc_xnpr_save = ssc_readx(params->ssc->regs, params->pdc->xnpr); + prtd->pdc_xncr_save = ssc_readx(params->ssc->regs, params->pdc->xncr); + + return 0; +} + +static int atmel_pcm_resume(struct snd_soc_dai *dai) +{ + struct snd_pcm_runtime *runtime = dai->runtime; + struct atmel_runtime_data *prtd; + struct atmel_pcm_dma_params *params; + + if (!runtime) + return 0; + + prtd = runtime->private_data; + params = prtd->params; + + /* restore the PDC registers and enable the PDC */ + ssc_writex(params->ssc->regs, params->pdc->xpr, prtd->pdc_xpr_save); + ssc_writex(params->ssc->regs, params->pdc->xcr, prtd->pdc_xcr_save); + ssc_writex(params->ssc->regs, params->pdc->xnpr, prtd->pdc_xnpr_save); + ssc_writex(params->ssc->regs, params->pdc->xncr, prtd->pdc_xncr_save); + + ssc_writel(params->ssc->regs, PDC_PTCR, params->mask->pdc_enable); + return 0; +} +#else +#define atmel_pcm_suspend NULL +#define atmel_pcm_resume NULL +#endif + +static struct snd_soc_platform_driver atmel_soc_platform = { + .ops = &atmel_pcm_ops, + .pcm_new = atmel_pcm_new, + .pcm_free = atmel_pcm_free, + .suspend = atmel_pcm_suspend, + .resume = atmel_pcm_resume, +}; + +int atmel_pcm_pdc_platform_register(struct device *dev) +{ + return snd_soc_register_platform(dev, &atmel_soc_platform); +} +EXPORT_SYMBOL(atmel_pcm_pdc_platform_register); + +void atmel_pcm_pdc_platform_unregister(struct device *dev) +{ + snd_soc_unregister_platform(dev); +} +EXPORT_SYMBOL(atmel_pcm_pdc_platform_unregister); + +MODULE_AUTHOR("Sedji Gaouaou "); +MODULE_DESCRIPTION("Atmel PCM module"); +MODULE_LICENSE("GPL"); diff --git a/sound/soc/atmel/atmel-pcm.c b/sound/soc/atmel/atmel-pcm.c index 9b84f985770e..e99f1811300a 100644 --- a/sound/soc/atmel/atmel-pcm.c +++ b/sound/soc/atmel/atmel-pcm.c @@ -32,80 +32,25 @@ */ #include -#include -#include -#include #include -#include -#include - -#include #include -#include #include - #include "atmel-pcm.h" - -/*--------------------------------------------------------------------------*\ - * Hardware definition -\*--------------------------------------------------------------------------*/ -/* TODO: These values were taken from the AT91 platform driver, check - * them against real values for AT32 - */ -static const struct snd_pcm_hardware atmel_pcm_hardware = { - .info = SNDRV_PCM_INFO_MMAP | - SNDRV_PCM_INFO_MMAP_VALID | - SNDRV_PCM_INFO_INTERLEAVED | - SNDRV_PCM_INFO_PAUSE, - .formats = SNDRV_PCM_FMTBIT_S16_LE, - .period_bytes_min = 32, - .period_bytes_max = 8192, - .periods_min = 2, - .periods_max = 1024, - .buffer_bytes_max = 32 * 1024, -}; - - -/*--------------------------------------------------------------------------*\ - * Data types -\*--------------------------------------------------------------------------*/ -struct atmel_runtime_data { - struct atmel_pcm_dma_params *params; - dma_addr_t dma_buffer; /* physical address of dma buffer */ - dma_addr_t dma_buffer_end; /* first address beyond DMA buffer */ - size_t period_size; - - dma_addr_t period_ptr; /* physical address of next period */ - - /* PDC register save */ - u32 pdc_xpr_save; - u32 pdc_xcr_save; - u32 pdc_xnpr_save; - u32 pdc_xncr_save; -}; - - -/*--------------------------------------------------------------------------*\ - * Helper functions -\*--------------------------------------------------------------------------*/ static int atmel_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, int stream) { struct snd_pcm_substream *substream = pcm->streams[stream].substream; struct snd_dma_buffer *buf = &substream->dma_buffer; - size_t size = atmel_pcm_hardware.buffer_bytes_max; + size_t size = ATMEL_SSC_DMABUF_SIZE; buf->dev.type = SNDRV_DMA_TYPE_DEV; buf->dev.dev = pcm->card->dev; buf->private_data = NULL; buf->area = dma_alloc_coherent(pcm->card->dev, size, - &buf->addr, GFP_KERNEL); - pr_debug("atmel-pcm:" - "preallocate_dma_buffer: area=%p, addr=%p, size=%d\n", - (void *) buf->area, - (void *) buf->addr, - size); + &buf->addr, GFP_KERNEL); + pr_debug("atmel-pcm: alloc dma buffer: area=%p, addr=%p, size=%d\n", + (void *)buf->area, (void *)buf->addr, size); if (!buf->area) return -ENOMEM; @@ -113,258 +58,19 @@ static int atmel_pcm_preallocate_dma_buffer(struct snd_pcm *pcm, buf->bytes = size; return 0; } -/*--------------------------------------------------------------------------*\ - * ISR -\*--------------------------------------------------------------------------*/ -static void atmel_pcm_dma_irq(u32 ssc_sr, - struct snd_pcm_substream *substream) -{ - struct atmel_runtime_data *prtd = substream->runtime->private_data; - struct atmel_pcm_dma_params *params = prtd->params; - static int count; - count++; - - if (ssc_sr & params->mask->ssc_endbuf) { - pr_warning("atmel-pcm: buffer %s on %s" - " (SSC_SR=%#x, count=%d)\n", - substream->stream == SNDRV_PCM_STREAM_PLAYBACK - ? "underrun" : "overrun", - params->name, ssc_sr, count); - - /* re-start the PDC */ - ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR, - params->mask->pdc_disable); - prtd->period_ptr += prtd->period_size; - if (prtd->period_ptr >= prtd->dma_buffer_end) - prtd->period_ptr = prtd->dma_buffer; - - ssc_writex(params->ssc->regs, params->pdc->xpr, - prtd->period_ptr); - ssc_writex(params->ssc->regs, params->pdc->xcr, - prtd->period_size / params->pdc_xfer_size); - ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR, - params->mask->pdc_enable); - } - - if (ssc_sr & params->mask->ssc_endx) { - /* Load the PDC next pointer and counter registers */ - prtd->period_ptr += prtd->period_size; - if (prtd->period_ptr >= prtd->dma_buffer_end) - prtd->period_ptr = prtd->dma_buffer; - - ssc_writex(params->ssc->regs, params->pdc->xnpr, - prtd->period_ptr); - ssc_writex(params->ssc->regs, params->pdc->xncr, - prtd->period_size / params->pdc_xfer_size); - } - - snd_pcm_period_elapsed(substream); -} - - -/*--------------------------------------------------------------------------*\ - * PCM operations -\*--------------------------------------------------------------------------*/ -static int atmel_pcm_hw_params(struct snd_pcm_substream *substream, - struct snd_pcm_hw_params *params) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct atmel_runtime_data *prtd = runtime->private_data; - struct snd_soc_pcm_runtime *rtd = substream->private_data; - - /* this may get called several times by oss emulation - * with different params */ - - snd_pcm_set_runtime_buffer(substream, &substream->dma_buffer); - runtime->dma_bytes = params_buffer_bytes(params); - - prtd->params = snd_soc_dai_get_dma_data(rtd->cpu_dai, substream); - prtd->params->dma_intr_handler = atmel_pcm_dma_irq; - - prtd->dma_buffer = runtime->dma_addr; - prtd->dma_buffer_end = runtime->dma_addr + runtime->dma_bytes; - prtd->period_size = params_period_bytes(params); - - pr_debug("atmel-pcm: " - "hw_params: DMA for %s initialized " - "(dma_bytes=%u, period_size=%u)\n", - prtd->params->name, - runtime->dma_bytes, - prtd->period_size); - return 0; -} - -static int atmel_pcm_hw_free(struct snd_pcm_substream *substream) -{ - struct atmel_runtime_data *prtd = substream->runtime->private_data; - struct atmel_pcm_dma_params *params = prtd->params; - - if (params != NULL) { - ssc_writex(params->ssc->regs, SSC_PDC_PTCR, - params->mask->pdc_disable); - prtd->params->dma_intr_handler = NULL; - } - - return 0; -} - -static int atmel_pcm_prepare(struct snd_pcm_substream *substream) -{ - struct atmel_runtime_data *prtd = substream->runtime->private_data; - struct atmel_pcm_dma_params *params = prtd->params; - - ssc_writex(params->ssc->regs, SSC_IDR, - params->mask->ssc_endx | params->mask->ssc_endbuf); - ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR, - params->mask->pdc_disable); - return 0; -} - -static int atmel_pcm_trigger(struct snd_pcm_substream *substream, - int cmd) -{ - struct snd_pcm_runtime *rtd = substream->runtime; - struct atmel_runtime_data *prtd = rtd->private_data; - struct atmel_pcm_dma_params *params = prtd->params; - int ret = 0; - - pr_debug("atmel-pcm:buffer_size = %ld," - "dma_area = %p, dma_bytes = %u\n", - rtd->buffer_size, rtd->dma_area, rtd->dma_bytes); - - switch (cmd) { - case SNDRV_PCM_TRIGGER_START: - prtd->period_ptr = prtd->dma_buffer; - - ssc_writex(params->ssc->regs, params->pdc->xpr, - prtd->period_ptr); - ssc_writex(params->ssc->regs, params->pdc->xcr, - prtd->period_size / params->pdc_xfer_size); - - prtd->period_ptr += prtd->period_size; - ssc_writex(params->ssc->regs, params->pdc->xnpr, - prtd->period_ptr); - ssc_writex(params->ssc->regs, params->pdc->xncr, - prtd->period_size / params->pdc_xfer_size); - - pr_debug("atmel-pcm: trigger: " - "period_ptr=%lx, xpr=%u, " - "xcr=%u, xnpr=%u, xncr=%u\n", - (unsigned long)prtd->period_ptr, - ssc_readx(params->ssc->regs, params->pdc->xpr), - ssc_readx(params->ssc->regs, params->pdc->xcr), - ssc_readx(params->ssc->regs, params->pdc->xnpr), - ssc_readx(params->ssc->regs, params->pdc->xncr)); - - ssc_writex(params->ssc->regs, SSC_IER, - params->mask->ssc_endx | params->mask->ssc_endbuf); - ssc_writex(params->ssc->regs, SSC_PDC_PTCR, - params->mask->pdc_enable); - - pr_debug("sr=%u imr=%u\n", - ssc_readx(params->ssc->regs, SSC_SR), - ssc_readx(params->ssc->regs, SSC_IER)); - break; /* SNDRV_PCM_TRIGGER_START */ - - case SNDRV_PCM_TRIGGER_STOP: - case SNDRV_PCM_TRIGGER_SUSPEND: - case SNDRV_PCM_TRIGGER_PAUSE_PUSH: - ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR, - params->mask->pdc_disable); - break; - - case SNDRV_PCM_TRIGGER_RESUME: - case SNDRV_PCM_TRIGGER_PAUSE_RELEASE: - ssc_writex(params->ssc->regs, ATMEL_PDC_PTCR, - params->mask->pdc_enable); - break; - - default: - ret = -EINVAL; - } - - return ret; -} - -static snd_pcm_uframes_t atmel_pcm_pointer( - struct snd_pcm_substream *substream) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct atmel_runtime_data *prtd = runtime->private_data; - struct atmel_pcm_dma_params *params = prtd->params; - dma_addr_t ptr; - snd_pcm_uframes_t x; - - ptr = (dma_addr_t) ssc_readx(params->ssc->regs, params->pdc->xpr); - x = bytes_to_frames(runtime, ptr - prtd->dma_buffer); - - if (x == runtime->buffer_size) - x = 0; - - return x; -} - -static int atmel_pcm_open(struct snd_pcm_substream *substream) -{ - struct snd_pcm_runtime *runtime = substream->runtime; - struct atmel_runtime_data *prtd; - int ret = 0; - - snd_soc_set_runtime_hwparams(substream, &atmel_pcm_hardware); - - /* ensure that buffer size is a multiple of period size */ - ret = snd_pcm_hw_constraint_integer(runtime, - SNDRV_PCM_HW_PARAM_PERIODS); - if (ret < 0) - goto out; - - prtd = kzalloc(sizeof(struct atmel_runtime_data), GFP_KERNEL); - if (prtd == NULL) { - ret = -ENOMEM; - goto out; - } - runtime->private_data = prtd; - - out: - return ret; -} - -static int atmel_pcm_close(struct snd_pcm_substream *substream) -{ - struct atmel_runtime_data *prtd = substream->runtime->private_data; - - kfree(prtd); - return 0; -} - -static int atmel_pcm_mmap(struct snd_pcm_substream *substream, +int atmel_pcm_mmap(struct snd_pcm_substream *substream, struct vm_area_struct *vma) { return remap_pfn_range(vma, vma->vm_start, substream->dma_buffer.addr >> PAGE_SHIFT, vma->vm_end - vma->vm_start, vma->vm_page_prot); } +EXPORT_SYMBOL_GPL(atmel_pcm_mmap); -static struct snd_pcm_ops atmel_pcm_ops = { - .open = atmel_pcm_open, - .close = atmel_pcm_close, - .ioctl = snd_pcm_lib_ioctl, - .hw_params = atmel_pcm_hw_params, - .hw_free = atmel_pcm_hw_free, - .prepare = atmel_pcm_prepare, - .trigger = atmel_pcm_trigger, - .pointer = atmel_pcm_pointer, - .mmap = atmel_pcm_mmap, -}; - - -/*--------------------------------------------------------------------------*\ - * ASoC platform driver -\*--------------------------------------------------------------------------*/ static u64 atmel_pcm_dmamask = DMA_BIT_MASK(32); -static int atmel_pcm_new(struct snd_soc_pcm_runtime *rtd) +int atmel_pcm_new(struct snd_soc_pcm_runtime *rtd) { struct snd_card *card = rtd->card->snd_card; struct snd_pcm *pcm = rtd->pcm; @@ -376,6 +82,7 @@ static int atmel_pcm_new(struct snd_soc_pcm_runtime *rtd) card->dev->coherent_dma_mask = DMA_BIT_MASK(32); if (pcm->streams[SNDRV_PCM_STREAM_PLAYBACK].substream) { + pr_debug("atmel-pcm: allocating PCM playback DMA buffer\n"); ret = atmel_pcm_preallocate_dma_buffer(pcm, SNDRV_PCM_STREAM_PLAYBACK); if (ret) @@ -383,8 +90,7 @@ static int atmel_pcm_new(struct snd_soc_pcm_runtime *rtd) } if (pcm->streams[SNDRV_PCM_STREAM_CAPTURE].substream) { - pr_debug("atmel-pcm:" - "Allocating PCM capture DMA buffer\n"); + pr_debug("atmel-pcm: allocating PCM capture DMA buffer\n"); ret = atmel_pcm_preallocate_dma_buffer(pcm, SNDRV_PCM_STREAM_CAPTURE); if (ret) @@ -393,8 +99,9 @@ static int atmel_pcm_new(struct snd_soc_pcm_runtime *rtd) out: return ret; } +EXPORT_SYMBOL_GPL(atmel_pcm_new); -static void atmel_pcm_free_dma_buffers(struct snd_pcm *pcm) +void atmel_pcm_free(struct snd_pcm *pcm) { struct snd_pcm_substream *substream; struct snd_dma_buffer *buf; @@ -413,89 +120,5 @@ static void atmel_pcm_free_dma_buffers(struct snd_pcm *pcm) buf->area = NULL; } } +EXPORT_SYMBOL_GPL(atmel_pcm_free); -#ifdef CONFIG_PM -static int atmel_pcm_suspend(struct snd_soc_dai *dai) -{ - struct snd_pcm_runtime *runtime = dai->runtime; - struct atmel_runtime_data *prtd; - struct atmel_pcm_dma_params *params; - - if (!runtime) - return 0; - - prtd = runtime->private_data; - params = prtd->params; - - /* disable the PDC and save the PDC registers */ - - ssc_writel(params->ssc->regs, PDC_PTCR, params->mask->pdc_disable); - - prtd->pdc_xpr_save = ssc_readx(params->ssc->regs, params->pdc->xpr); - prtd->pdc_xcr_save = ssc_readx(params->ssc->regs, params->pdc->xcr); - prtd->pdc_xnpr_save = ssc_readx(params->ssc->regs, params->pdc->xnpr); - prtd->pdc_xncr_save = ssc_readx(params->ssc->regs, params->pdc->xncr); - - return 0; -} - -static int atmel_pcm_resume(struct snd_soc_dai *dai) -{ - struct snd_pcm_runtime *runtime = dai->runtime; - struct atmel_runtime_data *prtd; - struct atmel_pcm_dma_params *params; - - if (!runtime) - return 0; - - prtd = runtime->private_data; - params = prtd->params; - - /* restore the PDC registers and enable the PDC */ - ssc_writex(params->ssc->regs, params->pdc->xpr, prtd->pdc_xpr_save); - ssc_writex(params->ssc->regs, params->pdc->xcr, prtd->pdc_xcr_save); - ssc_writex(params->ssc->regs, params->pdc->xnpr, prtd->pdc_xnpr_save); - ssc_writex(params->ssc->regs, params->pdc->xncr, prtd->pdc_xncr_save); - - ssc_writel(params->ssc->regs, PDC_PTCR, params->mask->pdc_enable); - return 0; -} -#else -#define atmel_pcm_suspend NULL -#define atmel_pcm_resume NULL -#endif - -static struct snd_soc_platform_driver atmel_soc_platform = { - .ops = &atmel_pcm_ops, - .pcm_new = atmel_pcm_new, - .pcm_free = atmel_pcm_free_dma_buffers, - .suspend = atmel_pcm_suspend, - .resume = atmel_pcm_resume, -}; - -static int __devinit atmel_soc_platform_probe(struct platform_device *pdev) -{ - return snd_soc_register_platform(&pdev->dev, &atmel_soc_platform); -} - -static int __devexit atmel_soc_platform_remove(struct platform_device *pdev) -{ - snd_soc_unregister_platform(&pdev->dev); - return 0; -} - -static struct platform_driver atmel_pcm_driver = { - .driver = { - .name = "atmel-pcm-audio", - .owner = THIS_MODULE, - }, - - .probe = atmel_soc_platform_probe, - .remove = __devexit_p(atmel_soc_platform_remove), -}; - -module_platform_driver(atmel_pcm_driver); - -MODULE_AUTHOR("Sedji Gaouaou "); -MODULE_DESCRIPTION("Atmel PCM module"); -MODULE_LICENSE("GPL"); diff --git a/sound/soc/atmel/atmel-pcm.h b/sound/soc/atmel/atmel-pcm.h index 5e0a95e64329..bb45d20e7250 100644 --- a/sound/soc/atmel/atmel-pcm.h +++ b/sound/soc/atmel/atmel-pcm.h @@ -36,6 +36,8 @@ #include +#define ATMEL_SSC_DMABUF_SIZE (64 * 1024) + /* * Registers and status bits that are required by the PCM driver. */ @@ -50,6 +52,7 @@ struct atmel_pdc_regs { struct atmel_ssc_mask { u32 ssc_enable; /* SSC recv/trans enable */ u32 ssc_disable; /* SSC recv/trans disable */ + u32 ssc_error; /* SSC error conditions */ u32 ssc_endx; /* SSC ENDTX or ENDRX */ u32 ssc_endbuf; /* SSC TXBUFE or RXBUFF */ u32 pdc_enable; /* PDC recv/trans enable */ @@ -80,4 +83,35 @@ struct atmel_pcm_dma_params { #define ssc_readx(base, reg) (__raw_readl((base) + (reg))) #define ssc_writex(base, reg, value) __raw_writel((value), (base) + (reg)) +int atmel_pcm_new(struct snd_soc_pcm_runtime *rtd); +void atmel_pcm_free(struct snd_pcm *pcm); +int atmel_pcm_mmap(struct snd_pcm_substream *substream, + struct vm_area_struct *vma); + +#ifdef CONFIG_SND_ATMEL_SOC_PDC +int atmel_pcm_pdc_platform_register(struct device *dev); +void atmel_pcm_pdc_platform_unregister(struct device *dev); +#else +static inline int atmel_pcm_pdc_platform_register(struct device *dev) +{ + return 0; +} +static inline void atmel_pcm_pdc_platform_unregister(struct device *dev) +{ +} +#endif + +#ifdef CONFIG_SND_ATMEL_SOC_DMA +int atmel_pcm_dma_platform_register(struct device *dev); +void atmel_pcm_dma_platform_unregister(struct device *dev); +#else +static inline int atmel_pcm_dma_platform_register(struct device *dev) +{ + return 0; +} +static inline void atmel_pcm_dma_platform_unregister(struct device *dev) +{ +} +#endif + #endif /* _ATMEL_PCM_H */ diff --git a/sound/soc/atmel/atmel_ssc_dai.c b/sound/soc/atmel/atmel_ssc_dai.c index 354341ec0f42..1c7663422054 100644 --- a/sound/soc/atmel/atmel_ssc_dai.c +++ b/sound/soc/atmel/atmel_ssc_dai.c @@ -48,11 +48,7 @@ #include "atmel_ssc_dai.h" -#if defined(CONFIG_ARCH_AT91SAM9260) || defined(CONFIG_ARCH_AT91SAM9G20) -#define NUM_SSC_DEVICES 1 -#else #define NUM_SSC_DEVICES 3 -#endif /* * SSC PDC registers required by the PCM DMA engine. @@ -107,7 +103,6 @@ static struct atmel_pcm_dma_params ssc_dma_params[NUM_SSC_DEVICES][2] = { .pdc = &pdc_rx_reg, .mask = &ssc_rx_mask, } }, -#if NUM_SSC_DEVICES == 3 {{ .name = "SSC1 PCM out", .pdc = &pdc_tx_reg, @@ -128,7 +123,6 @@ static struct atmel_pcm_dma_params ssc_dma_params[NUM_SSC_DEVICES][2] = { .pdc = &pdc_rx_reg, .mask = &ssc_rx_mask, } }, -#endif }; @@ -139,7 +133,6 @@ static struct atmel_ssc_info ssc_info[NUM_SSC_DEVICES] = { .dir_mask = SSC_DIR_MASK_UNUSED, .initialized = 0, }, -#if NUM_SSC_DEVICES == 3 { .name = "ssc1", .lock = __SPIN_LOCK_UNLOCKED(ssc_info[1].lock), @@ -152,7 +145,6 @@ static struct atmel_ssc_info ssc_info[NUM_SSC_DEVICES] = { .dir_mask = SSC_DIR_MASK_UNUSED, .initialized = 0, }, -#endif }; @@ -690,27 +682,9 @@ static int atmel_ssc_resume(struct snd_soc_dai *cpu_dai) static int atmel_ssc_probe(struct snd_soc_dai *dai) { struct atmel_ssc_info *ssc_p = &ssc_info[dai->id]; - int ret = 0; snd_soc_dai_set_drvdata(dai, ssc_p); - /* - * Request SSC device - */ - ssc_p->ssc = ssc_request(dai->id); - if (IS_ERR(ssc_p->ssc)) { - printk(KERN_ERR "ASoC: Failed to request SSC %d\n", dai->id); - ret = PTR_ERR(ssc_p->ssc); - } - - return ret; -} - -static int atmel_ssc_remove(struct snd_soc_dai *dai) -{ - struct atmel_ssc_info *ssc_p = snd_soc_dai_get_drvdata(dai); - - ssc_free(ssc_p->ssc); return 0; } @@ -728,11 +702,8 @@ static const struct snd_soc_dai_ops atmel_ssc_dai_ops = { .set_clkdiv = atmel_ssc_set_dai_clkdiv, }; -static struct snd_soc_dai_driver atmel_ssc_dai[NUM_SSC_DEVICES] = { - { - .name = "atmel-ssc-dai.0", +static struct snd_soc_dai_driver atmel_ssc_dai = { .probe = atmel_ssc_probe, - .remove = atmel_ssc_remove, .suspend = atmel_ssc_suspend, .resume = atmel_ssc_resume, .playback = { @@ -746,69 +717,50 @@ static struct snd_soc_dai_driver atmel_ssc_dai[NUM_SSC_DEVICES] = { .rates = ATMEL_SSC_RATES, .formats = ATMEL_SSC_FORMATS,}, .ops = &atmel_ssc_dai_ops, - }, -#if NUM_SSC_DEVICES == 3 - { - .name = "atmel-ssc-dai.1", - .probe = atmel_ssc_probe, - .remove = atmel_ssc_remove, - .suspend = atmel_ssc_suspend, - .resume = atmel_ssc_resume, - .playback = { - .channels_min = 1, - .channels_max = 2, - .rates = ATMEL_SSC_RATES, - .formats = ATMEL_SSC_FORMATS,}, - .capture = { - .channels_min = 1, - .channels_max = 2, - .rates = ATMEL_SSC_RATES, - .formats = ATMEL_SSC_FORMATS,}, - .ops = &atmel_ssc_dai_ops, - }, - { - .name = "atmel-ssc-dai.2", - .probe = atmel_ssc_probe, - .remove = atmel_ssc_remove, - .suspend = atmel_ssc_suspend, - .resume = atmel_ssc_resume, - .playback = { - .channels_min = 1, - .channels_max = 2, - .rates = ATMEL_SSC_RATES, - .formats = ATMEL_SSC_FORMATS,}, - .capture = { - .channels_min = 1, - .channels_max = 2, - .rates = ATMEL_SSC_RATES, - .formats = ATMEL_SSC_FORMATS,}, - .ops = &atmel_ssc_dai_ops, - }, -#endif }; -static __devinit int asoc_ssc_probe(struct platform_device *pdev) +static int asoc_ssc_init(struct device *dev) { - BUG_ON(pdev->id < 0); - BUG_ON(pdev->id >= ARRAY_SIZE(atmel_ssc_dai)); - return snd_soc_register_dai(&pdev->dev, &atmel_ssc_dai[pdev->id]); -} + struct platform_device *pdev = to_platform_device(dev); + struct ssc_device *ssc = platform_get_drvdata(pdev); + int ret; + + ret = snd_soc_register_dai(dev, &atmel_ssc_dai); + if (ret) { + dev_err(dev, "Could not register DAI: %d\n", ret); + goto err; + } + + if (ssc->pdata->use_dma) + ret = atmel_pcm_dma_platform_register(dev); + else + ret = atmel_pcm_pdc_platform_register(dev); + + if (ret) { + dev_err(dev, "Could not register PCM: %d\n", ret); + goto err_unregister_dai; + }; -static int __devexit asoc_ssc_remove(struct platform_device *pdev) -{ - snd_soc_unregister_dai(&pdev->dev); return 0; + +err_unregister_dai: + snd_soc_unregister_dai(dev); +err: + return ret; } -static struct platform_driver asoc_ssc_driver = { - .driver = { - .name = "atmel-ssc-dai", - .owner = THIS_MODULE, - }, +static void asoc_ssc_exit(struct device *dev) +{ + struct platform_device *pdev = to_platform_device(dev); + struct ssc_device *ssc = platform_get_drvdata(pdev); - .probe = asoc_ssc_probe, - .remove = __devexit_p(asoc_ssc_remove), -}; + if (ssc->pdata->use_dma) + atmel_pcm_dma_platform_unregister(dev); + else + atmel_pcm_pdc_platform_unregister(dev); + + snd_soc_unregister_dai(dev); +} /** * atmel_ssc_set_audio - Allocate the specified SSC for audio use. @@ -816,50 +768,32 @@ static struct platform_driver asoc_ssc_driver = { int atmel_ssc_set_audio(int ssc_id) { struct ssc_device *ssc; - static struct platform_device *dma_pdev; - struct platform_device *ssc_pdev; int ret; - if (ssc_id < 0 || ssc_id >= ARRAY_SIZE(atmel_ssc_dai)) - return -EINVAL; - - /* Allocate a dummy device for DMA if we don't have one already */ - if (!dma_pdev) { - dma_pdev = platform_device_alloc("atmel-pcm-audio", -1); - if (!dma_pdev) - return -ENOMEM; - - ret = platform_device_add(dma_pdev); - if (ret < 0) { - platform_device_put(dma_pdev); - dma_pdev = NULL; - return ret; - } - } - - ssc_pdev = platform_device_alloc("atmel-ssc-dai", ssc_id); - if (!ssc_pdev) - return -ENOMEM; - /* If we can grab the SSC briefly to parent the DAI device off it */ ssc = ssc_request(ssc_id); - if (IS_ERR(ssc)) - pr_warn("Unable to parent ASoC SSC DAI on SSC: %ld\n", + if (IS_ERR(ssc)) { + pr_err("Unable to parent ASoC SSC DAI on SSC: %ld\n", PTR_ERR(ssc)); - else { - ssc_pdev->dev.parent = &(ssc->pdev->dev); - ssc_free(ssc); + return PTR_ERR(ssc); + } else { + ssc_info[ssc_id].ssc = ssc; } - ret = platform_device_add(ssc_pdev); - if (ret < 0) - platform_device_put(ssc_pdev); + ret = asoc_ssc_init(&ssc->pdev->dev); return ret; } EXPORT_SYMBOL_GPL(atmel_ssc_set_audio); -module_platform_driver(asoc_ssc_driver); +void atmel_ssc_put_audio(int ssc_id) +{ + struct ssc_device *ssc = ssc_info[ssc_id].ssc; + + ssc_free(ssc); + asoc_ssc_exit(&ssc->pdev->dev); +} +EXPORT_SYMBOL_GPL(atmel_ssc_put_audio); /* Module information */ MODULE_AUTHOR("Sedji Gaouaou, sedji.gaouaou@atmel.com, www.atmel.com"); diff --git a/sound/soc/atmel/atmel_ssc_dai.h b/sound/soc/atmel/atmel_ssc_dai.h index 5d4f0f9b4d9a..b1f08d511495 100644 --- a/sound/soc/atmel/atmel_ssc_dai.h +++ b/sound/soc/atmel/atmel_ssc_dai.h @@ -117,6 +117,7 @@ struct atmel_ssc_info { struct atmel_ssc_state ssc_state; }; -int atmel_ssc_set_audio(int ssc); +int atmel_ssc_set_audio(int ssc_id); +void atmel_ssc_put_audio(int ssc_id); #endif /* _AT91_SSC_DAI_H */ diff --git a/sound/soc/atmel/sam9g20_wm8731.c b/sound/soc/atmel/sam9g20_wm8731.c index c88351488f45..0744610e53dd 100644 --- a/sound/soc/atmel/sam9g20_wm8731.c +++ b/sound/soc/atmel/sam9g20_wm8731.c @@ -38,6 +38,8 @@ #include #include +#include + #include #include @@ -179,10 +181,10 @@ static int at91sam9g20ek_wm8731_init(struct snd_soc_pcm_runtime *rtd) static struct snd_soc_dai_link at91sam9g20ek_dai = { .name = "WM8731", .stream_name = "WM8731 PCM", - .cpu_dai_name = "atmel-ssc-dai.0", + .cpu_dai_name = "at91rm9200_ssc.0", .codec_dai_name = "wm8731-hifi", .init = at91sam9g20ek_wm8731_init, - .platform_name = "atmel-pcm-audio", + .platform_name = "at91rm9200_ssc.0", .codec_name = "wm8731.0-001b", .ops = &at91sam9g20ek_ops, }; @@ -195,20 +197,31 @@ static struct snd_soc_card snd_soc_at91sam9g20ek = { .set_bias_level = at91sam9g20ek_set_bias_level, }; -static struct platform_device *at91sam9g20ek_snd_device; - -static int __init at91sam9g20ek_init(void) +static int __devinit at91sam9g20ek_audio_probe(struct platform_device *pdev) { + struct device_node *np = pdev->dev.of_node; + struct device_node *codec_np, *cpu_np; struct clk *pllb; + struct snd_soc_card *card = &snd_soc_at91sam9g20ek; + struct pinctrl *pinctrl; int ret; - if (!(machine_is_at91sam9g20ek() || machine_is_at91sam9g20ek_2mmc())) - return -ENODEV; + pinctrl = devm_pinctrl_get_select_default(&pdev->dev); + if (IS_ERR(pinctrl)) { + dev_err(&pdev->dev, "Failed to request pinctrl for mck\n"); + return PTR_ERR(pinctrl); + } + + if (!np) { + if (!(machine_is_at91sam9g20ek() || + machine_is_at91sam9g20ek_2mmc())) + return -ENODEV; + } ret = atmel_ssc_set_audio(0); - if (ret != 0) { - pr_err("Failed to set SSC 0 for audio: %d\n", ret); - return ret; + if (ret) { + dev_err(&pdev->dev, "ssc channel is not valid\n"); + return -EINVAL; } /* @@ -236,45 +249,92 @@ static int __init at91sam9g20ek_init(void) clk_set_rate(mclk, MCLK_RATE); - at91sam9g20ek_snd_device = platform_device_alloc("soc-audio", -1); - if (!at91sam9g20ek_snd_device) { - printk(KERN_ERR "ASoC: Platform device allocation failed\n"); - ret = -ENOMEM; - goto err_mclk; + card->dev = &pdev->dev; + + /* Parse device node info */ + if (np) { + ret = snd_soc_of_parse_card_name(card, "atmel,model"); + if (ret) + goto err; + + ret = snd_soc_of_parse_audio_routing(card, + "atmel,audio-routing"); + if (ret) + goto err; + + /* Parse codec info */ + at91sam9g20ek_dai.codec_name = NULL; + codec_np = of_parse_phandle(np, "atmel,audio-codec", 0); + if (!codec_np) { + dev_err(&pdev->dev, "codec info missing\n"); + return -EINVAL; + } + at91sam9g20ek_dai.codec_of_node = codec_np; + + /* Parse dai and platform info */ + at91sam9g20ek_dai.cpu_dai_name = NULL; + at91sam9g20ek_dai.platform_name = NULL; + cpu_np = of_parse_phandle(np, "atmel,ssc-controller", 0); + if (!cpu_np) { + dev_err(&pdev->dev, "dai and pcm info missing\n"); + return -EINVAL; + } + at91sam9g20ek_dai.cpu_of_node = cpu_np; + at91sam9g20ek_dai.platform_of_node = cpu_np; + + of_node_put(codec_np); + of_node_put(cpu_np); } - platform_set_drvdata(at91sam9g20ek_snd_device, - &snd_soc_at91sam9g20ek); - - ret = platform_device_add(at91sam9g20ek_snd_device); + ret = snd_soc_register_card(card); if (ret) { - printk(KERN_ERR "ASoC: Platform device allocation failed\n"); - goto err_device_add; + printk(KERN_ERR "ASoC: snd_soc_register_card() failed\n"); } return ret; -err_device_add: - platform_device_put(at91sam9g20ek_snd_device); err_mclk: clk_put(mclk); mclk = NULL; err: + atmel_ssc_put_audio(0); return ret; } -static void __exit at91sam9g20ek_exit(void) +static int __devexit at91sam9g20ek_audio_remove(struct platform_device *pdev) { - platform_device_unregister(at91sam9g20ek_snd_device); - at91sam9g20ek_snd_device = NULL; + struct snd_soc_card *card = platform_get_drvdata(pdev); + + atmel_ssc_put_audio(0); + snd_soc_unregister_card(card); clk_put(mclk); mclk = NULL; + + return 0; } -module_init(at91sam9g20ek_init); -module_exit(at91sam9g20ek_exit); +#ifdef CONFIG_OF +static const struct of_device_id at91sam9g20ek_wm8731_dt_ids[] = { + { .compatible = "atmel,at91sam9g20ek-wm8731-audio", }, + { } +}; +MODULE_DEVICE_TABLE(of, at91sam9g20ek_wm8731_dt_ids); +#endif + +static struct platform_driver at91sam9g20ek_audio_driver = { + .driver = { + .name = "at91sam9g20ek-audio", + .owner = THIS_MODULE, + .of_match_table = of_match_ptr(at91sam9g20ek_wm8731_dt_ids), + }, + .probe = at91sam9g20ek_audio_probe, + .remove = __devexit_p(at91sam9g20ek_audio_remove), +}; + +module_platform_driver(at91sam9g20ek_audio_driver); /* Module information */ MODULE_AUTHOR("Sedji Gaouaou "); MODULE_DESCRIPTION("ALSA SoC AT91SAM9G20EK_WM8731"); +MODULE_ALIAS("platform:at91sam9g20ek-audio"); MODULE_LICENSE("GPL");