[PATCH 5.10.y-cip 17/31] arm64: dts: renesas: r9a07g044: Add SSI support
Lad Prabhakar
From: Biju Das <biju.das.jz@...>
commit 92a341315afc9cc8e015fa201610d8dd73db4a01 upstream. Add SSI{0,1,2,3} nodes to RZ/G2L SoC DTSI. Signed-off-by: Biju Das <biju.das.jz@...> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Link: https://lore.kernel.org/r/20210814135526.15561-3-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- arch/arm64/boot/dts/renesas/r9a07g044.dtsi | 76 ++++++++++++++++++++++ 1 file changed, 76 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r9a07g044.dtsi b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi index d6bbd7c5a5bf..49f579856f14 100644 --- a/arch/arm64/boot/dts/renesas/r9a07g044.dtsi +++ b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi @@ -92,6 +92,82 @@ #size-cells = <2>; ranges; + ssi0: ssi@10049c00 { + compatible = "renesas,r9a07g044-ssi", + "renesas,rz-ssi"; + reg = <0 0x10049c00 0 0x400>; + interrupts = <GIC_SPI 326 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 327 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 328 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 329 IRQ_TYPE_EDGE_RISING>; + interrupt-names = "int_req", "dma_rx", "dma_tx", "dma_rt"; + clocks = <&cpg CPG_MOD R9A07G044_SSI0_PCLK2>, + <&cpg CPG_MOD R9A07G044_SSI0_PCLK_SFR>, + <&audio_clk1>, <&audio_clk2>; + clock-names = "ssi", "ssi_sfr", "audio_clk1", "audio_clk2"; + resets = <&cpg R9A07G044_SSI0_RST_M2_REG>; + power-domains = <&cpg>; + #sound-dai-cells = <0>; + status = "disabled"; + }; + + ssi1: ssi@1004a000 { + compatible = "renesas,r9a07g044-ssi", + "renesas,rz-ssi"; + reg = <0 0x1004a000 0 0x400>; + interrupts = <GIC_SPI 330 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 331 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 332 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 333 IRQ_TYPE_EDGE_RISING>; + interrupt-names = "int_req", "dma_rx", "dma_tx", "dma_rt"; + clocks = <&cpg CPG_MOD R9A07G044_SSI1_PCLK2>, + <&cpg CPG_MOD R9A07G044_SSI1_PCLK_SFR>, + <&audio_clk1>, <&audio_clk2>; + clock-names = "ssi", "ssi_sfr", "audio_clk1", "audio_clk2"; + resets = <&cpg R9A07G044_SSI1_RST_M2_REG>; + power-domains = <&cpg>; + #sound-dai-cells = <0>; + status = "disabled"; + }; + + ssi2: ssi@1004a400 { + compatible = "renesas,r9a07g044-ssi", + "renesas,rz-ssi"; + reg = <0 0x1004a400 0 0x400>; + interrupts = <GIC_SPI 334 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 335 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 336 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 337 IRQ_TYPE_EDGE_RISING>; + interrupt-names = "int_req", "dma_rx", "dma_tx", "dma_rt"; + clocks = <&cpg CPG_MOD R9A07G044_SSI2_PCLK2>, + <&cpg CPG_MOD R9A07G044_SSI2_PCLK_SFR>, + <&audio_clk1>, <&audio_clk2>; + clock-names = "ssi", "ssi_sfr", "audio_clk1", "audio_clk2"; + resets = <&cpg R9A07G044_SSI2_RST_M2_REG>; + power-domains = <&cpg>; + #sound-dai-cells = <0>; + status = "disabled"; + }; + + ssi3: ssi@1004a800 { + compatible = "renesas,r9a07g044-ssi", + "renesas,rz-ssi"; + reg = <0 0x1004a800 0 0x400>; + interrupts = <GIC_SPI 338 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 339 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 340 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 341 IRQ_TYPE_EDGE_RISING>; + interrupt-names = "int_req", "dma_rx", "dma_tx", "dma_rt"; + clocks = <&cpg CPG_MOD R9A07G044_SSI3_PCLK2>, + <&cpg CPG_MOD R9A07G044_SSI3_PCLK_SFR>, + <&audio_clk1>, <&audio_clk2>; + clock-names = "ssi", "ssi_sfr", "audio_clk1", "audio_clk2"; + resets = <&cpg R9A07G044_SSI3_RST_M2_REG>; + power-domains = <&cpg>; + #sound-dai-cells = <0>; + status = "disabled"; + }; + scif0: serial@1004b800 { compatible = "renesas,scif-r9a07g044"; reg = <0 0x1004b800 0 0x400>; -- 2.17.1
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[PATCH 5.10.y-cip 16/31] arm64: dts: renesas: r9a07g044: Add external audio clock nodes
Lad Prabhakar
From: Biju Das <biju.das.jz@...>
commit 6f48272f11b1863e652530b7171a54fc9b24e275 upstream. Add external audio clocks nodes to RZ/G2L (a.k.a R9A07G044) SoC DTSI. The external audio clocks are configured as 0 Hz fixed frequency clocks by default. Boards that provide audio clocks should override them. Signed-off-by: Biju Das <biju.das.jz@...> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Link: https://lore.kernel.org/r/20210814135526.15561-2-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- arch/arm64/boot/dts/renesas/r9a07g044.dtsi | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r9a07g044.dtsi b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi index 2fa29d81c2a7..d6bbd7c5a5bf 100644 --- a/arch/arm64/boot/dts/renesas/r9a07g044.dtsi +++ b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi @@ -13,6 +13,20 @@ #address-cells = <2>; #size-cells = <2>; + audio_clk1: audio_clk1 { + compatible = "fixed-clock"; + #clock-cells = <0>; + /* This value must be overridden by boards that provide it */ + clock-frequency = <0>; + }; + + audio_clk2: audio_clk2 { + compatible = "fixed-clock"; + #clock-cells = <0>; + /* This value must be overridden by boards that provide it */ + clock-frequency = <0>; + }; + /* External CAN clock - to be overridden by boards that provide it */ can_clk: can { compatible = "fixed-clock"; -- 2.17.1
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[PATCH 5.10.y-cip 15/31] arm64: dts: renesas: r9a07g044: Add ADC node
Lad Prabhakar
commit b3f894354aa08eb853044a7f5029dbdfc7f3b792 upstream.
Add ADC node to R9A07G044 (RZ/G2L) SoC DTSI. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Reviewed-by: Biju Das <biju.das.jz@...> Link: https://lore.kernel.org/r/20210804202118.25745-4-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- arch/arm64/boot/dts/renesas/r9a07g044.dtsi | 42 ++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/arch/arm64/boot/dts/renesas/r9a07g044.dtsi b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi index 6eefba96f5c7..2fa29d81c2a7 100644 --- a/arch/arm64/boot/dts/renesas/r9a07g044.dtsi +++ b/arch/arm64/boot/dts/renesas/r9a07g044.dtsi @@ -218,6 +218,48 @@ status = "disabled"; }; + adc: adc@10059000 { + compatible = "renesas,r9a07g044-adc", "renesas,rzg2l-adc"; + reg = <0 0x10059000 0 0x400>; + interrupts = <GIC_SPI 347 IRQ_TYPE_EDGE_RISING>; + clocks = <&cpg CPG_MOD R9A07G044_ADC_ADCLK>, + <&cpg CPG_MOD R9A07G044_ADC_PCLK>; + clock-names = "adclk", "pclk"; + resets = <&cpg R9A07G044_ADC_PRESETN>, + <&cpg R9A07G044_ADC_ADRST_N>; + reset-names = "presetn", "adrst-n"; + power-domains = <&cpg>; + status = "disabled"; + + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + }; + channel@1 { + reg = <1>; + }; + channel@2 { + reg = <2>; + }; + channel@3 { + reg = <3>; + }; + channel@4 { + reg = <4>; + }; + channel@5 { + reg = <5>; + }; + channel@6 { + reg = <6>; + }; + channel@7 { + reg = <7>; + }; + }; + cpg: clock-controller@11010000 { compatible = "renesas,r9a07g044-cpg"; reg = <0 0x11010000 0 0x10000>; -- 2.17.1
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[PATCH 5.10.y-cip 14/31] clk: renesas: r9a07g044: Add clock and reset entries for ADC
Lad Prabhakar
commit 1b87d5bba32c1f25a12ba0625546e5375e3f998d upstream.
Add clock and reset entries for ADC block in CPG driver. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Reviewed-by: Biju Das <biju.das.jz@...> Link: https://lore.kernel.org/r/20210719085840.21842-4-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- drivers/clk/renesas/r9a07g044-cpg.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/clk/renesas/r9a07g044-cpg.c b/drivers/clk/renesas/r9a07g044-cpg.c index f1e0be50283f..4c94b94c4125 100644 --- a/drivers/clk/renesas/r9a07g044-cpg.c +++ b/drivers/clk/renesas/r9a07g044-cpg.c @@ -145,6 +145,10 @@ static struct rzg2l_mod_clk r9a07g044_mod_clks[] = { 0x594, 0), DEF_MOD("gpio", R9A07G044_GPIO_HCLK, R9A07G044_OSCCLK, 0x598, 0), + DEF_MOD("adc_adclk", R9A07G044_ADC_ADCLK, R9A07G044_CLK_TSU, + 0x5a8, 0), + DEF_MOD("adc_pclk", R9A07G044_ADC_PCLK, R9A07G044_CLK_P0, + 0x5a8, 1), }; static struct rzg2l_reset r9a07g044_resets[] = { @@ -176,6 +180,8 @@ static struct rzg2l_reset r9a07g044_resets[] = { DEF_RST(R9A07G044_GPIO_RSTN, 0x898, 0), DEF_RST(R9A07G044_GPIO_PORT_RESETN, 0x898, 1), DEF_RST(R9A07G044_GPIO_SPARE_RESETN, 0x898, 2), + DEF_RST(R9A07G044_ADC_PRESETN, 0x8a8, 0), + DEF_RST(R9A07G044_ADC_ADRST_N, 0x8a8, 1), }; static const unsigned int r9a07g044_crit_mod_clks[] __initconst = { -- 2.17.1
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[PATCH 5.10.y-cip 13/31] clk: renesas: r9a07g044: Add SSIF-2 clock and reset entries
Lad Prabhakar
From: Biju Das <biju.das.jz@...>
commit d520af345189c04095bdd256d3601864601ac562 upstream. Add SSIF-2 clock and reset entries in CPG driver. Signed-off-by: Biju Das <biju.das.jz@...> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Link: https://lore.kernel.org/r/20210702135010.5937-3-biju.das.jz@bp.renesas.com Signed-off-by: Geert Uytterhoeven <geert+renesas@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- drivers/clk/renesas/r9a07g044-cpg.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/clk/renesas/r9a07g044-cpg.c b/drivers/clk/renesas/r9a07g044-cpg.c index 0c45cad4ee65..f1e0be50283f 100644 --- a/drivers/clk/renesas/r9a07g044-cpg.c +++ b/drivers/clk/renesas/r9a07g044-cpg.c @@ -97,6 +97,22 @@ static struct rzg2l_mod_clk r9a07g044_mod_clks[] = { 0x52c, 0), DEF_MOD("dmac_pclk", R9A07G044_DMAC_PCLK, CLK_P1_DIV2, 0x52c, 1), + DEF_MOD("ssi0_pclk", R9A07G044_SSI0_PCLK2, R9A07G044_CLK_P0, + 0x570, 0), + DEF_MOD("ssi0_sfr", R9A07G044_SSI0_PCLK_SFR, R9A07G044_CLK_P0, + 0x570, 1), + DEF_MOD("ssi1_pclk", R9A07G044_SSI1_PCLK2, R9A07G044_CLK_P0, + 0x570, 2), + DEF_MOD("ssi1_sfr", R9A07G044_SSI1_PCLK_SFR, R9A07G044_CLK_P0, + 0x570, 3), + DEF_MOD("ssi2_pclk", R9A07G044_SSI2_PCLK2, R9A07G044_CLK_P0, + 0x570, 4), + DEF_MOD("ssi2_sfr", R9A07G044_SSI2_PCLK_SFR, R9A07G044_CLK_P0, + 0x570, 5), + DEF_MOD("ssi3_pclk", R9A07G044_SSI3_PCLK2, R9A07G044_CLK_P0, + 0x570, 6), + DEF_MOD("ssi3_sfr", R9A07G044_SSI3_PCLK_SFR, R9A07G044_CLK_P0, + 0x570, 7), DEF_MOD("usb0_host", R9A07G044_USB_U2H0_HCLK, R9A07G044_CLK_P1, 0x578, 0), DEF_MOD("usb1_host", R9A07G044_USB_U2H1_HCLK, R9A07G044_CLK_P1, @@ -137,6 +153,10 @@ static struct rzg2l_reset r9a07g044_resets[] = { DEF_RST(R9A07G044_IA55_RESETN, 0x818, 0), DEF_RST(R9A07G044_DMAC_ARESETN, 0x82c, 0), DEF_RST(R9A07G044_DMAC_RST_ASYNC, 0x82c, 1), + DEF_RST(R9A07G044_SSI0_RST_M2_REG, 0x870, 0), + DEF_RST(R9A07G044_SSI1_RST_M2_REG, 0x870, 1), + DEF_RST(R9A07G044_SSI2_RST_M2_REG, 0x870, 2), + DEF_RST(R9A07G044_SSI3_RST_M2_REG, 0x870, 3), DEF_RST(R9A07G044_USB_U2H0_HRESETN, 0x878, 0), DEF_RST(R9A07G044_USB_U2H1_HRESETN, 0x878, 1), DEF_RST(R9A07G044_USB_U2P_EXL_SYSRST, 0x878, 2), -- 2.17.1
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[PATCH 5.10.y-cip 12/31] iio: adc: rzg2l_adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume()
Lad Prabhakar
From: Yang Yingliang <yangyingliang@...>
commit fa002b364981b49d04e818abbc06fd47a5ec7b51 upstream. Add clk_disable_unprepare() on error path in rzg2l_adc_pm_runtime_resume(). Reported-by: Hulk Robot <hulkci@...> Signed-off-by: Yang Yingliang <yangyingliang@...> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Link: https://lore.kernel.org/r/20210819132416.175644-1-yangyingliang@huawei.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- drivers/iio/adc/rzg2l_adc.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c index 6472170be9d1..e2cf11cb7495 100644 --- a/drivers/iio/adc/rzg2l_adc.c +++ b/drivers/iio/adc/rzg2l_adc.c @@ -559,8 +559,10 @@ static int __maybe_unused rzg2l_adc_pm_runtime_resume(struct device *dev) return ret; ret = clk_prepare_enable(adc->adclk); - if (ret) + if (ret) { + clk_disable_unprepare(adc->pclk); return ret; + } rzg2l_adc_pwr(adc, true); -- 2.17.1
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[PATCH 5.10.y-cip 11/31] iio: adc: rzg2l_adc: Fix -EBUSY timeout error return
Lad Prabhakar
From: Colin Ian King <colin.king@...>
commit 9909a395e9807aa79145c9289d0c13d0133359a2 upstream. Currently when a timeout occurs in rzg2l_adc_hw_init the error -EBUSY is assigned to ret but the error code is used as the function is hard-coded to return 0. The variable ret is 0 before entering the while-loop hence the fix is just to return ret at the end of the function to return the success 0 or -EBUSY return code. Addresses-Coverity: ("Unused value") Fixes: d484c21bacfa ("iio: adc: Add driver for Renesas RZ/G2L A/D converter") Signed-off-by: Colin Ian King <colin.king@...> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Link: https://lore.kernel.org/r/20210817172111.495897-1-colin.king@canonical.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- drivers/iio/adc/rzg2l_adc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c index 919108d798ba..6472170be9d1 100644 --- a/drivers/iio/adc/rzg2l_adc.c +++ b/drivers/iio/adc/rzg2l_adc.c @@ -390,7 +390,7 @@ static int rzg2l_adc_hw_init(struct rzg2l_adc *adc) exit_hw_init: clk_disable_unprepare(adc->pclk); - return 0; + return ret; } static void rzg2l_adc_pm_runtime_disable(void *data) -- 2.17.1
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[PATCH 5.10.y-cip 10/31] iio: adc: Add driver for Renesas RZ/G2L A/D converter
Lad Prabhakar
commit d484c21bacfa8bd2fa9fc26393ec59108f508c4c upstream.
Add ADC driver support for Renesas RZ/G2L A/D converter in SW trigger mode. A/D Converter block is a successive approximation analog-to-digital converter with a 12-bit accuracy and supports a maximum of 8 input channels. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Reviewed-by: Biju Das <biju.das.jz@...> Link: https://lore.kernel.org/r/20210804202118.25745-3-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...> [PL: Dropped read_label callback] Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- MAINTAINERS | 8 + drivers/iio/adc/Kconfig | 10 + drivers/iio/adc/Makefile | 1 + drivers/iio/adc/rzg2l_adc.c | 589 ++++++++++++++++++++++++++++++++++++ 4 files changed, 608 insertions(+) create mode 100644 drivers/iio/adc/rzg2l_adc.c diff --git a/MAINTAINERS b/MAINTAINERS index 591b401f4fbe..c0d2a2cfcfd6 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -14941,6 +14941,14 @@ L: linux-renesas-soc@... S: Maintained F: drivers/phy/renesas/phy-rcar-gen3-usb*.c +RENESAS RZ/G2L A/D DRIVER +M: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> +L: linux-iio@... +L: linux-renesas-soc@... +S: Supported +F: Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml +F: drivers/iio/adc/rzg2l_adc.c + RESET CONTROLLER FRAMEWORK M: Philipp Zabel <p.zabel@...> S: Maintained diff --git a/drivers/iio/adc/Kconfig b/drivers/iio/adc/Kconfig index e39b679126a2..dfa5e1d2a0ca 100644 --- a/drivers/iio/adc/Kconfig +++ b/drivers/iio/adc/Kconfig @@ -876,6 +876,16 @@ config ROCKCHIP_SARADC To compile this driver as a module, choose M here: the module will be called rockchip_saradc. +config RZG2L_ADC + tristate "Renesas RZ/G2L ADC driver" + depends on ARCH_R9A07G044 || COMPILE_TEST + help + Say yes here to build support for the ADC found in Renesas + RZ/G2L family. + + To compile this driver as a module, choose M here: the + module will be called rzg2l_adc. + config SC27XX_ADC tristate "Spreadtrum SC27xx series PMICs ADC" depends on MFD_SC27XX_PMIC || COMPILE_TEST diff --git a/drivers/iio/adc/Makefile b/drivers/iio/adc/Makefile index 90f94ada7b30..9c106945e2e4 100644 --- a/drivers/iio/adc/Makefile +++ b/drivers/iio/adc/Makefile @@ -81,6 +81,7 @@ obj-$(CONFIG_QCOM_PM8XXX_XOADC) += qcom-pm8xxx-xoadc.o obj-$(CONFIG_RCAR_GYRO_ADC) += rcar-gyroadc.o obj-$(CONFIG_RN5T618_ADC) += rn5t618-adc.o obj-$(CONFIG_ROCKCHIP_SARADC) += rockchip_saradc.o +obj-$(CONFIG_RZG2L_ADC) += rzg2l_adc.o obj-$(CONFIG_SC27XX_ADC) += sc27xx_adc.o obj-$(CONFIG_SPEAR_ADC) += spear_adc.o obj-$(CONFIG_STX104) += stx104.o diff --git a/drivers/iio/adc/rzg2l_adc.c b/drivers/iio/adc/rzg2l_adc.c new file mode 100644 index 000000000000..919108d798ba --- /dev/null +++ b/drivers/iio/adc/rzg2l_adc.c @@ -0,0 +1,589 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * RZ/G2L A/D Converter driver + * + * Copyright (c) 2021 Renesas Electronics Europe GmbH + * + * Author: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> + */ + +#include <linux/bitfield.h> +#include <linux/clk.h> +#include <linux/completion.h> +#include <linux/delay.h> +#include <linux/iio/iio.h> +#include <linux/interrupt.h> +#include <linux/io.h> +#include <linux/mod_devicetable.h> +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/pm_runtime.h> +#include <linux/reset.h> + +#define DRIVER_NAME "rzg2l-adc" + +#define RZG2L_ADM(n) ((n) * 0x4) +#define RZG2L_ADM0_ADCE BIT(0) +#define RZG2L_ADM0_ADBSY BIT(1) +#define RZG2L_ADM0_PWDWNB BIT(2) +#define RZG2L_ADM0_SRESB BIT(15) +#define RZG2L_ADM1_TRG BIT(0) +#define RZG2L_ADM1_MS BIT(2) +#define RZG2L_ADM1_BS BIT(4) +#define RZG2L_ADM1_EGA_MASK GENMASK(13, 12) +#define RZG2L_ADM2_CHSEL_MASK GENMASK(7, 0) +#define RZG2L_ADM3_ADIL_MASK GENMASK(31, 24) +#define RZG2L_ADM3_ADCMP_MASK GENMASK(23, 16) +#define RZG2L_ADM3_ADCMP_E FIELD_PREP(RZG2L_ADM3_ADCMP_MASK, 0xe) +#define RZG2L_ADM3_ADSMP_MASK GENMASK(15, 0) + +#define RZG2L_ADINT 0x20 +#define RZG2L_ADINT_INTEN_MASK GENMASK(7, 0) +#define RZG2L_ADINT_CSEEN BIT(16) +#define RZG2L_ADINT_INTS BIT(31) + +#define RZG2L_ADSTS 0x24 +#define RZG2L_ADSTS_CSEST BIT(16) +#define RZG2L_ADSTS_INTST_MASK GENMASK(7, 0) + +#define RZG2L_ADIVC 0x28 +#define RZG2L_ADIVC_DIVADC_MASK GENMASK(8, 0) +#define RZG2L_ADIVC_DIVADC_4 FIELD_PREP(RZG2L_ADIVC_DIVADC_MASK, 0x4) + +#define RZG2L_ADFIL 0x2c + +#define RZG2L_ADCR(n) (0x30 + ((n) * 0x4)) +#define RZG2L_ADCR_AD_MASK GENMASK(11, 0) + +#define RZG2L_ADSMP_DEFUALT_SAMPLING 0x578 + +#define RZG2L_ADC_MAX_CHANNELS 8 +#define RZG2L_ADC_CHN_MASK 0x7 +#define RZG2L_ADC_TIMEOUT usecs_to_jiffies(1 * 4) + +struct rzg2l_adc_data { + const struct iio_chan_spec *channels; + u8 num_channels; +}; + +struct rzg2l_adc { + void __iomem *base; + struct clk *pclk; + struct clk *adclk; + struct reset_control *presetn; + struct reset_control *adrstn; + struct completion completion; + const struct rzg2l_adc_data *data; + struct mutex lock; + u16 last_val[RZG2L_ADC_MAX_CHANNELS]; +}; + +static const char * const rzg2l_adc_channel_name[] = { + "adc0", + "adc1", + "adc2", + "adc3", + "adc4", + "adc5", + "adc6", + "adc7", +}; + +static unsigned int rzg2l_adc_readl(struct rzg2l_adc *adc, u32 reg) +{ + return readl(adc->base + reg); +} + +static void rzg2l_adc_writel(struct rzg2l_adc *adc, unsigned int reg, u32 val) +{ + writel(val, adc->base + reg); +} + +static void rzg2l_adc_pwr(struct rzg2l_adc *adc, bool on) +{ + u32 reg; + + reg = rzg2l_adc_readl(adc, RZG2L_ADM(0)); + if (on) + reg |= RZG2L_ADM0_PWDWNB; + else + reg &= ~RZG2L_ADM0_PWDWNB; + rzg2l_adc_writel(adc, RZG2L_ADM(0), reg); + udelay(2); +} + +static void rzg2l_adc_start_stop(struct rzg2l_adc *adc, bool start) +{ + int timeout = 5; + u32 reg; + + reg = rzg2l_adc_readl(adc, RZG2L_ADM(0)); + if (start) + reg |= RZG2L_ADM0_ADCE; + else + reg &= ~RZG2L_ADM0_ADCE; + rzg2l_adc_writel(adc, RZG2L_ADM(0), reg); + + if (start) + return; + + do { + usleep_range(100, 200); + reg = rzg2l_adc_readl(adc, RZG2L_ADM(0)); + timeout--; + if (!timeout) { + pr_err("%s stopping ADC timed out\n", __func__); + break; + } + } while (((reg & RZG2L_ADM0_ADBSY) || (reg & RZG2L_ADM0_ADCE))); +} + +static void rzg2l_set_trigger(struct rzg2l_adc *adc) +{ + u32 reg; + + /* + * Setup ADM1 for SW trigger + * EGA[13:12] - Set 00 to indicate hardware trigger is invalid + * BS[4] - Enable 1-buffer mode + * MS[1] - Enable Select mode + * TRG[0] - Enable software trigger mode + */ + reg = rzg2l_adc_readl(adc, RZG2L_ADM(1)); + reg &= ~RZG2L_ADM1_EGA_MASK; + reg &= ~RZG2L_ADM1_BS; + reg &= ~RZG2L_ADM1_TRG; + reg |= RZG2L_ADM1_MS; + rzg2l_adc_writel(adc, RZG2L_ADM(1), reg); +} + +static int rzg2l_adc_conversion_setup(struct rzg2l_adc *adc, u8 ch) +{ + u32 reg; + + if (rzg2l_adc_readl(adc, RZG2L_ADM(0)) & RZG2L_ADM0_ADBSY) + return -EBUSY; + + rzg2l_set_trigger(adc); + + /* Select analog input channel subjected to conversion. */ + reg = rzg2l_adc_readl(adc, RZG2L_ADM(2)); + reg &= ~RZG2L_ADM2_CHSEL_MASK; + reg |= BIT(ch); + rzg2l_adc_writel(adc, RZG2L_ADM(2), reg); + + /* + * Setup ADINT + * INTS[31] - Select pulse signal + * CSEEN[16] - Enable channel select error interrupt + * INTEN[7:0] - Select channel interrupt + */ + reg = rzg2l_adc_readl(adc, RZG2L_ADINT); + reg &= ~RZG2L_ADINT_INTS; + reg &= ~RZG2L_ADINT_INTEN_MASK; + reg |= (RZG2L_ADINT_CSEEN | BIT(ch)); + rzg2l_adc_writel(adc, RZG2L_ADINT, reg); + + return 0; +} + +static int rzg2l_adc_set_power(struct iio_dev *indio_dev, bool on) +{ + struct device *dev = indio_dev->dev.parent; + + if (on) + return pm_runtime_resume_and_get(dev); + + return pm_runtime_put_sync(dev); +} + +static int rzg2l_adc_conversion(struct iio_dev *indio_dev, struct rzg2l_adc *adc, u8 ch) +{ + int ret; + + ret = rzg2l_adc_set_power(indio_dev, true); + if (ret) + return ret; + + ret = rzg2l_adc_conversion_setup(adc, ch); + if (ret) { + rzg2l_adc_set_power(indio_dev, false); + return ret; + } + + reinit_completion(&adc->completion); + + rzg2l_adc_start_stop(adc, true); + + if (!wait_for_completion_timeout(&adc->completion, RZG2L_ADC_TIMEOUT)) { + rzg2l_adc_writel(adc, RZG2L_ADINT, + rzg2l_adc_readl(adc, RZG2L_ADINT) & ~RZG2L_ADINT_INTEN_MASK); + rzg2l_adc_start_stop(adc, false); + rzg2l_adc_set_power(indio_dev, false); + return -ETIMEDOUT; + } + + return rzg2l_adc_set_power(indio_dev, false); +} + +static int rzg2l_adc_read_raw(struct iio_dev *indio_dev, + struct iio_chan_spec const *chan, + int *val, int *val2, long mask) +{ + struct rzg2l_adc *adc = iio_priv(indio_dev); + int ret; + u8 ch; + + switch (mask) { + case IIO_CHAN_INFO_RAW: + if (chan->type != IIO_VOLTAGE) + return -EINVAL; + + mutex_lock(&adc->lock); + ch = chan->channel & RZG2L_ADC_CHN_MASK; + ret = rzg2l_adc_conversion(indio_dev, adc, ch); + if (ret) { + mutex_unlock(&adc->lock); + return ret; + } + *val = adc->last_val[ch]; + mutex_unlock(&adc->lock); + + return IIO_VAL_INT; + + default: + return -EINVAL; + } +} + +static const struct iio_info rzg2l_adc_iio_info = { + .read_raw = rzg2l_adc_read_raw, +}; + +static irqreturn_t rzg2l_adc_isr(int irq, void *dev_id) +{ + struct rzg2l_adc *adc = dev_id; + unsigned long intst; + u32 reg; + int ch; + + reg = rzg2l_adc_readl(adc, RZG2L_ADSTS); + + /* A/D conversion channel select error interrupt */ + if (reg & RZG2L_ADSTS_CSEST) { + rzg2l_adc_writel(adc, RZG2L_ADSTS, reg); + return IRQ_HANDLED; + } + + intst = reg & RZG2L_ADSTS_INTST_MASK; + if (!intst) + return IRQ_NONE; + + for_each_set_bit(ch, &intst, RZG2L_ADC_MAX_CHANNELS) + adc->last_val[ch] = rzg2l_adc_readl(adc, RZG2L_ADCR(ch)) & RZG2L_ADCR_AD_MASK; + + /* clear the channel interrupt */ + rzg2l_adc_writel(adc, RZG2L_ADSTS, reg); + + complete(&adc->completion); + + return IRQ_HANDLED; +} + +static int rzg2l_adc_parse_properties(struct platform_device *pdev, struct rzg2l_adc *adc) +{ + struct iio_chan_spec *chan_array; + struct fwnode_handle *fwnode; + struct rzg2l_adc_data *data; + unsigned int channel; + int num_channels; + int ret; + u8 i; + + data = devm_kzalloc(&pdev->dev, sizeof(*data), GFP_KERNEL); + if (!data) + return -ENOMEM; + + num_channels = device_get_child_node_count(&pdev->dev); + if (!num_channels) { + dev_err(&pdev->dev, "no channel children\n"); + return -ENODEV; + } + + if (num_channels > RZG2L_ADC_MAX_CHANNELS) { + dev_err(&pdev->dev, "num of channel children out of range\n"); + return -EINVAL; + } + + chan_array = devm_kcalloc(&pdev->dev, num_channels, sizeof(*chan_array), + GFP_KERNEL); + if (!chan_array) + return -ENOMEM; + + i = 0; + device_for_each_child_node(&pdev->dev, fwnode) { + ret = fwnode_property_read_u32(fwnode, "reg", &channel); + if (ret) + return ret; + + if (channel >= RZG2L_ADC_MAX_CHANNELS) + return -EINVAL; + + chan_array[i].type = IIO_VOLTAGE; + chan_array[i].indexed = 1; + chan_array[i].channel = channel; + chan_array[i].info_mask_separate = BIT(IIO_CHAN_INFO_RAW); + chan_array[i].datasheet_name = rzg2l_adc_channel_name[channel]; + i++; + } + + data->num_channels = num_channels; + data->channels = chan_array; + adc->data = data; + + return 0; +} + +static int rzg2l_adc_hw_init(struct rzg2l_adc *adc) +{ + int timeout = 5; + u32 reg; + int ret; + + ret = clk_prepare_enable(adc->pclk); + if (ret) + return ret; + + /* SW reset */ + reg = rzg2l_adc_readl(adc, RZG2L_ADM(0)); + reg |= RZG2L_ADM0_SRESB; + rzg2l_adc_writel(adc, RZG2L_ADM(0), reg); + + while (!(rzg2l_adc_readl(adc, RZG2L_ADM(0)) & RZG2L_ADM0_SRESB)) { + if (!timeout) { + ret = -EBUSY; + goto exit_hw_init; + } + timeout--; + usleep_range(100, 200); + } + + /* Only division by 4 can be set */ + reg = rzg2l_adc_readl(adc, RZG2L_ADIVC); + reg &= ~RZG2L_ADIVC_DIVADC_MASK; + reg |= RZG2L_ADIVC_DIVADC_4; + rzg2l_adc_writel(adc, RZG2L_ADIVC, reg); + + /* + * Setup AMD3 + * ADIL[31:24] - Should be always set to 0 + * ADCMP[23:16] - Should be always set to 0xe + * ADSMP[15:0] - Set default (0x578) sampling period + */ + reg = rzg2l_adc_readl(adc, RZG2L_ADM(3)); + reg &= ~RZG2L_ADM3_ADIL_MASK; + reg &= ~RZG2L_ADM3_ADCMP_MASK; + reg &= ~RZG2L_ADM3_ADSMP_MASK; + reg |= (RZG2L_ADM3_ADCMP_E | RZG2L_ADSMP_DEFUALT_SAMPLING); + rzg2l_adc_writel(adc, RZG2L_ADM(3), reg); + +exit_hw_init: + clk_disable_unprepare(adc->pclk); + + return 0; +} + +static void rzg2l_adc_pm_runtime_disable(void *data) +{ + struct device *dev = data; + + pm_runtime_disable(dev->parent); +} + +static void rzg2l_adc_pm_runtime_set_suspended(void *data) +{ + struct device *dev = data; + + pm_runtime_set_suspended(dev->parent); +} + +static void rzg2l_adc_reset_assert(void *data) +{ + reset_control_assert(data); +} + +static int rzg2l_adc_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct iio_dev *indio_dev; + struct rzg2l_adc *adc; + int ret; + int irq; + + indio_dev = devm_iio_device_alloc(dev, sizeof(*adc)); + if (!indio_dev) + return -ENOMEM; + + adc = iio_priv(indio_dev); + + ret = rzg2l_adc_parse_properties(pdev, adc); + if (ret) + return ret; + + mutex_init(&adc->lock); + + adc->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(adc->base)) + return PTR_ERR(adc->base); + + adc->pclk = devm_clk_get(dev, "pclk"); + if (IS_ERR(adc->pclk)) { + dev_err(dev, "Failed to get pclk"); + return PTR_ERR(adc->pclk); + } + + adc->adclk = devm_clk_get(dev, "adclk"); + if (IS_ERR(adc->adclk)) { + dev_err(dev, "Failed to get adclk"); + return PTR_ERR(adc->adclk); + } + + adc->adrstn = devm_reset_control_get_exclusive(dev, "adrst-n"); + if (IS_ERR(adc->adrstn)) { + dev_err(dev, "failed to get adrstn\n"); + return PTR_ERR(adc->adrstn); + } + + adc->presetn = devm_reset_control_get_exclusive(dev, "presetn"); + if (IS_ERR(adc->presetn)) { + dev_err(dev, "failed to get presetn\n"); + return PTR_ERR(adc->presetn); + } + + ret = reset_control_deassert(adc->adrstn); + if (ret) { + dev_err(&pdev->dev, "failed to deassert adrstn pin, %d\n", ret); + return ret; + } + + ret = devm_add_action_or_reset(&pdev->dev, + rzg2l_adc_reset_assert, adc->adrstn); + if (ret) { + dev_err(&pdev->dev, "failed to register adrstn assert devm action, %d\n", + ret); + return ret; + } + + ret = reset_control_deassert(adc->presetn); + if (ret) { + dev_err(&pdev->dev, "failed to deassert presetn pin, %d\n", ret); + return ret; + } + + ret = devm_add_action_or_reset(&pdev->dev, + rzg2l_adc_reset_assert, adc->presetn); + if (ret) { + dev_err(&pdev->dev, "failed to register presetn assert devm action, %d\n", + ret); + return ret; + } + + ret = rzg2l_adc_hw_init(adc); + if (ret) { + dev_err(&pdev->dev, "failed to initialize ADC HW, %d\n", ret); + return ret; + } + + irq = platform_get_irq(pdev, 0); + if (irq < 0) { + dev_err(dev, "no irq resource\n"); + return irq; + } + + ret = devm_request_irq(dev, irq, rzg2l_adc_isr, + 0, dev_name(dev), adc); + if (ret < 0) + return ret; + + init_completion(&adc->completion); + + platform_set_drvdata(pdev, indio_dev); + + indio_dev->name = DRIVER_NAME; + indio_dev->info = &rzg2l_adc_iio_info; + indio_dev->modes = INDIO_DIRECT_MODE; + indio_dev->channels = adc->data->channels; + indio_dev->num_channels = adc->data->num_channels; + + pm_runtime_set_suspended(dev); + ret = devm_add_action_or_reset(&pdev->dev, + rzg2l_adc_pm_runtime_set_suspended, &indio_dev->dev); + if (ret) + return ret; + + pm_runtime_enable(dev); + ret = devm_add_action_or_reset(&pdev->dev, + rzg2l_adc_pm_runtime_disable, &indio_dev->dev); + if (ret) + return ret; + + return devm_iio_device_register(dev, indio_dev); +} + +static const struct of_device_id rzg2l_adc_match[] = { + { .compatible = "renesas,rzg2l-adc",}, + { /* sentinel */ } +}; +MODULE_DEVICE_TABLE(of, rzg2l_adc_match); + +static int __maybe_unused rzg2l_adc_pm_runtime_suspend(struct device *dev) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct rzg2l_adc *adc = iio_priv(indio_dev); + + rzg2l_adc_pwr(adc, false); + clk_disable_unprepare(adc->adclk); + clk_disable_unprepare(adc->pclk); + + return 0; +} + +static int __maybe_unused rzg2l_adc_pm_runtime_resume(struct device *dev) +{ + struct iio_dev *indio_dev = dev_get_drvdata(dev); + struct rzg2l_adc *adc = iio_priv(indio_dev); + int ret; + + ret = clk_prepare_enable(adc->pclk); + if (ret) + return ret; + + ret = clk_prepare_enable(adc->adclk); + if (ret) + return ret; + + rzg2l_adc_pwr(adc, true); + + return 0; +} + +static const struct dev_pm_ops rzg2l_adc_pm_ops = { + SET_RUNTIME_PM_OPS(rzg2l_adc_pm_runtime_suspend, + rzg2l_adc_pm_runtime_resume, + NULL) +}; + +static struct platform_driver rzg2l_adc_driver = { + .probe = rzg2l_adc_probe, + .driver = { + .name = DRIVER_NAME, + .of_match_table = rzg2l_adc_match, + .pm = &rzg2l_adc_pm_ops, + }, +}; + +module_platform_driver(rzg2l_adc_driver); + +MODULE_AUTHOR("Lad Prabhakar <prabhakar.mahadev-lad.rj@...>"); +MODULE_DESCRIPTION("Renesas RZ/G2L ADC driver"); +MODULE_LICENSE("GPL v2"); -- 2.17.1
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[PATCH 5.10.y-cip 09/31] dt-bindings: iio: adc: Add binding documentation for Renesas RZ/G2L A/D converter
Lad Prabhakar
commit 08080963162740abdd8a35f6c3aad0e744f71627 upstream.
Add binding documentation for Renesas RZ/G2L A/D converter block. Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Reviewed-by: Biju Das <biju.das.jz@...> Reviewed-by: Rob Herring <robh@...> Link: https://lore.kernel.org/r/20210804202118.25745-2-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Jonathan Cameron <Jonathan.Cameron@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- .../bindings/iio/adc/renesas,rzg2l-adc.yaml | 134 ++++++++++++++++++ 1 file changed, 134 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml diff --git a/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml b/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml new file mode 100644 index 000000000000..c80201d6a716 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml @@ -0,0 +1,134 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/iio/adc/renesas,rzg2l-adc.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RZ/G2L ADC + +maintainers: + - Lad Prabhakar <prabhakar.mahadev-lad.rj@...> + +description: | + A/D Converter block is a successive approximation analog-to-digital converter + with a 12-bit accuracy. Up to eight analog input channels can be selected. + Conversions can be performed in single or repeat mode. Result of the ADC is + stored in a 32-bit data register corresponding to each channel. + +properties: + compatible: + items: + - enum: + - renesas,r9a07g044-adc # RZ/G2{L,LC} + - const: renesas,rzg2l-adc + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: converter clock + - description: peripheral clock + + clock-names: + items: + - const: adclk + - const: pclk + + power-domains: + maxItems: 1 + + resets: + maxItems: 2 + + reset-names: + items: + - const: presetn + - const: adrst-n + + '#address-cells': + const: 1 + + '#size-cells': + const: 0 + +required: + - compatible + - reg + - interrupts + - clocks + - clock-names + - power-domains + - resets + - reset-names + +patternProperties: + "^channel@[0-7]$": + $ref: "adc.yaml" + type: object + description: | + Represents the external channels which are connected to the ADC. + + properties: + reg: + description: | + The channel number. It can have up to 8 channels numbered from 0 to 7. + items: + - minimum: 0 + maximum: 7 + + required: + - reg + + additionalProperties: false + +additionalProperties: false + +examples: + - | + #include <dt-bindings/clock/r9a07g044-cpg.h> + #include <dt-bindings/interrupt-controller/arm-gic.h> + + adc: adc@10059000 { + compatible = "renesas,r9a07g044-adc", "renesas,rzg2l-adc"; + reg = <0x10059000 0x400>; + interrupts = <GIC_SPI 347 IRQ_TYPE_EDGE_RISING>; + clocks = <&cpg CPG_MOD R9A07G044_ADC_ADCLK>, + <&cpg CPG_MOD R9A07G044_ADC_PCLK>; + clock-names = "adclk", "pclk"; + power-domains = <&cpg>; + resets = <&cpg R9A07G044_ADC_PRESETN>, + <&cpg R9A07G044_ADC_ADRST_N>; + reset-names = "presetn", "adrst-n"; + + #address-cells = <1>; + #size-cells = <0>; + + channel@0 { + reg = <0>; + }; + channel@1 { + reg = <1>; + }; + channel@2 { + reg = <2>; + }; + channel@3 { + reg = <3>; + }; + channel@4 { + reg = <4>; + }; + channel@5 { + reg = <5>; + }; + channel@6 { + reg = <6>; + }; + channel@7 { + reg = <7>; + }; + }; -- 2.17.1
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[PATCH 5.10.y-cip 08/31] ASoC: sh: rz-ssi: Improve error handling in rz_ssi_dma_request function
Lad Prabhakar
From: Biju Das <biju.das.jz@...>
commit 4b14f17912052a6963580dfba04781cfe6ccba02 upstream. dma_request_chan() returns error pointer in case of failures, but the rz_ssi_dma_request() checked for NULL pointer instead. This patch fixes the issue by checking for ERR_PTR() instead of NULL and sets the DMA pointers to NULL in error case so that ssi can fallback to PIO mode. Fixes: 26ac471c5354 ("ASoC: sh: rz-ssi: Add SSI DMAC support") Signed-off-by: Biju Das <biju.das.jz@...> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Link: https://lore.kernel.org/r/20210818101450.15948-1-biju.das.jz@bp.renesas.com Signed-off-by: Mark Brown <broonie@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- sound/soc/sh/rz-ssi.c | 15 +++++++++++++-- 1 file changed, 13 insertions(+), 2 deletions(-) diff --git a/sound/soc/sh/rz-ssi.c b/sound/soc/sh/rz-ssi.c index 341815476244..89c7e5e4cbf6 100644 --- a/sound/soc/sh/rz-ssi.c +++ b/sound/soc/sh/rz-ssi.c @@ -185,7 +185,7 @@ rz_ssi_stream_get(struct rz_ssi_priv *ssi, struct snd_pcm_substream *substream) static inline bool rz_ssi_is_dma_enabled(struct rz_ssi_priv *ssi) { - return (ssi->playback.dma_ch || ssi->capture.dma_ch); + return (ssi->playback.dma_ch && (ssi->dma_rt || ssi->capture.dma_ch)); } static int rz_ssi_stream_is_valid(struct rz_ssi_priv *ssi, @@ -676,15 +676,26 @@ static void rz_ssi_release_dma_channels(struct rz_ssi_priv *ssi) static int rz_ssi_dma_request(struct rz_ssi_priv *ssi, struct device *dev) { ssi->playback.dma_ch = dma_request_chan(dev, "tx"); + if (IS_ERR(ssi->playback.dma_ch)) + ssi->playback.dma_ch = NULL; + ssi->capture.dma_ch = dma_request_chan(dev, "rx"); + if (IS_ERR(ssi->capture.dma_ch)) + ssi->capture.dma_ch = NULL; + if (!ssi->playback.dma_ch && !ssi->capture.dma_ch) { ssi->playback.dma_ch = dma_request_chan(dev, "rt"); - if (!ssi->playback.dma_ch) + if (IS_ERR(ssi->playback.dma_ch)) { + ssi->playback.dma_ch = NULL; goto no_dma; + } ssi->dma_rt = true; } + if (!rz_ssi_is_dma_enabled(ssi)) + goto no_dma; + if (ssi->playback.dma_ch && (rz_ssi_dma_slave_config(ssi, ssi->playback.dma_ch, true) < 0)) goto no_dma; -- 2.17.1
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[PATCH 5.10.y-cip 07/31] ASoC: sh: rz-ssi: Fix wrong operator used issue
Lad Prabhakar
From: Biju Das <biju.das.jz@...>
commit 1b5d1d3a2f77250707225509cadc17997bab4353 upstream. Fix wrong operator used issue reported by Coverity by replacing | operator with & operator. Signed-off-by: Biju Das <biju.das.jz@...> Reported-by: Colin Ian King <colin.king@...> Link: https://lore.kernel.org/r/20210816182336.29959-1-biju.das.jz@bp.renesas.com Signed-off-by: Mark Brown <broonie@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- sound/soc/sh/rz-ssi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/sh/rz-ssi.c b/sound/soc/sh/rz-ssi.c index d96c1bea047c..341815476244 100644 --- a/sound/soc/sh/rz-ssi.c +++ b/sound/soc/sh/rz-ssi.c @@ -368,7 +368,7 @@ static int rz_ssi_stop(struct rz_ssi_priv *ssi, struct rz_ssi_stream *strm) /* Wait for idle */ timeout = 100; while (--timeout) { - if (rz_ssi_reg_readl(ssi, SSISR) | SSISR_IIRQ) + if (rz_ssi_reg_readl(ssi, SSISR) & SSISR_IIRQ) break; udelay(1); } -- 2.17.1
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[PATCH 5.10.y-cip 06/31] ASoC: sh: rz-ssi: Fix dereference of noderef expression warning
Lad Prabhakar
From: Biju Das <biju.das.jz@...>
commit d40dfb860ad72a32b9c2aeae739a2725f8ce011a upstream. Fix following sparse warning: sound/soc/sh/rz-ssi.c:156:15: sparse: warning: dereference of noderef expression Signed-off-by: Biju Das <biju.das.jz@...> Reported-by: kernel test robot <lkp@...> Link: https://lore.kernel.org/r/20210816132049.28128-1-biju.das.jz@bp.renesas.com Signed-off-by: Mark Brown <broonie@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- sound/soc/sh/rz-ssi.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/sound/soc/sh/rz-ssi.c b/sound/soc/sh/rz-ssi.c index 4e702b7d5b49..d96c1bea047c 100644 --- a/sound/soc/sh/rz-ssi.c +++ b/sound/soc/sh/rz-ssi.c @@ -148,7 +148,7 @@ static u32 rz_ssi_reg_readl(struct rz_ssi_priv *priv, uint reg) return readl(priv->base + reg); } -static void rz_ssi_reg_mask_setl(struct rz_ssi_priv __iomem *priv, uint reg, +static void rz_ssi_reg_mask_setl(struct rz_ssi_priv *priv, uint reg, u32 bclr, u32 bset) { u32 val; -- 2.17.1
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[PATCH 5.10.y-cip 03/31] ASoC: sh: Add RZ/G2L SSIF-2 driver
Lad Prabhakar
From: Biju Das <biju.das.jz@...>
commit 03e786bd43410fa93e5d2459f7a43e90ff0ae801 upstream. Add serial sound interface(SSIF-2) driver support for RZ/G2L SoC. Based on the work done by Chris Brandt for RZ/A SSI driver. Signed-off-by: Biju Das <biju.das.jz@...> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Link: https://lore.kernel.org/r/20210813091156.10700-2-biju.das.jz@bp.renesas.com Signed-off-by: Mark Brown <broonie@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- sound/soc/sh/Kconfig | 6 + sound/soc/sh/Makefile | 4 + sound/soc/sh/rz-ssi.c | 871 ++++++++++++++++++++++++++++++++++++++++++ 3 files changed, 881 insertions(+) create mode 100644 sound/soc/sh/rz-ssi.c diff --git a/sound/soc/sh/Kconfig b/sound/soc/sh/Kconfig index ef8a29b9f641..f19bd15c0900 100644 --- a/sound/soc/sh/Kconfig +++ b/sound/soc/sh/Kconfig @@ -44,6 +44,12 @@ config SND_SOC_RCAR help This option enables R-Car SRU/SCU/SSIU/SSI sound support +config SND_SOC_RZ + tristate "RZ/G2L series SSIF-2 support" + depends on ARCH_R9A07G044 || COMPILE_TEST + help + This option enables RZ/G2L SSIF-2 sound support. + ## ## Boards ## diff --git a/sound/soc/sh/Makefile b/sound/soc/sh/Makefile index 51bd7c81671c..f6fd79948f6a 100644 --- a/sound/soc/sh/Makefile +++ b/sound/soc/sh/Makefile @@ -22,3 +22,7 @@ snd-soc-migor-objs := migor.o obj-$(CONFIG_SND_SH7760_AC97) += snd-soc-sh7760-ac97.o obj-$(CONFIG_SND_SIU_MIGOR) += snd-soc-migor.o + +# RZ/G2L +snd-soc-rz-ssi-objs := rz-ssi.o +obj-$(CONFIG_SND_SOC_RZ) += snd-soc-rz-ssi.o diff --git a/sound/soc/sh/rz-ssi.c b/sound/soc/sh/rz-ssi.c new file mode 100644 index 000000000000..615fa81f061e --- /dev/null +++ b/sound/soc/sh/rz-ssi.c @@ -0,0 +1,871 @@ +// SPDX-License-Identifier: GPL-2.0 +// +// Renesas RZ/G2L ASoC Serial Sound Interface (SSIF-2) Driver +// +// Copyright (C) 2021 Renesas Electronics Corp. +// Copyright (C) 2019 Chris Brandt. +// + +#include <linux/clk.h> +#include <linux/io.h> +#include <linux/module.h> +#include <linux/of_device.h> +#include <linux/pm_runtime.h> +#include <linux/reset.h> +#include <sound/soc.h> + +/* REGISTER OFFSET */ +#define SSICR 0x000 +#define SSISR 0x004 +#define SSIFCR 0x010 +#define SSIFSR 0x014 +#define SSIFTDR 0x018 +#define SSIFRDR 0x01c +#define SSIOFR 0x020 +#define SSISCR 0x024 + +/* SSI REGISTER BITS */ +#define SSICR_DWL(x) (((x) & 0x7) << 19) +#define SSICR_SWL(x) (((x) & 0x7) << 16) +#define SSICR_MST BIT(14) +#define SSICR_CKDV(x) (((x) & 0xf) << 4) + +#define SSICR_CKS BIT(30) +#define SSICR_TUIEN BIT(29) +#define SSICR_TOIEN BIT(28) +#define SSICR_RUIEN BIT(27) +#define SSICR_ROIEN BIT(26) +#define SSICR_MST BIT(14) +#define SSICR_BCKP BIT(13) +#define SSICR_LRCKP BIT(12) +#define SSICR_CKDV(x) (((x) & 0xf) << 4) +#define SSICR_TEN BIT(1) +#define SSICR_REN BIT(0) + +#define SSISR_TUIRQ BIT(29) +#define SSISR_TOIRQ BIT(28) +#define SSISR_RUIRQ BIT(27) +#define SSISR_ROIRQ BIT(26) +#define SSISR_IIRQ BIT(25) + +#define SSIFCR_AUCKE BIT(31) +#define SSIFCR_SSIRST BIT(16) +#define SSIFCR_TIE BIT(3) +#define SSIFCR_RIE BIT(2) +#define SSIFCR_TFRST BIT(1) +#define SSIFCR_RFRST BIT(0) + +#define SSIFSR_TDC_MASK 0x3f +#define SSIFSR_TDC_SHIFT 24 +#define SSIFSR_RDC_MASK 0x3f +#define SSIFSR_RDC_SHIFT 8 + +#define SSIFSR_TDC(x) (((x) & 0x1f) << 24) +#define SSIFSR_TDE BIT(16) +#define SSIFSR_RDC(x) (((x) & 0x1f) << 8) +#define SSIFSR_RDF BIT(0) + +#define SSIOFR_LRCONT BIT(8) + +#define SSISCR_TDES(x) (((x) & 0x1f) << 8) +#define SSISCR_RDFS(x) (((x) & 0x1f) << 0) + +/* Pre allocated buffers sizes */ +#define PREALLOC_BUFFER (SZ_32K) +#define PREALLOC_BUFFER_MAX (SZ_32K) + +#define SSI_RATES SNDRV_PCM_RATE_8000_48000 /* 8k-44.1kHz */ +#define SSI_FMTS SNDRV_PCM_FMTBIT_S16_LE +#define SSI_CHAN_MIN 2 +#define SSI_CHAN_MAX 2 +#define SSI_FIFO_DEPTH 32 + +struct rz_ssi_priv; + +struct rz_ssi_stream { + struct rz_ssi_priv *priv; + struct snd_pcm_substream *substream; + int fifo_sample_size; /* sample capacity of SSI FIFO */ + int period_counter; /* for keeping track of periods transferred */ + int sample_width; + int buffer_pos; /* current frame position in the buffer */ + int running; /* 0=stopped, 1=running */ + + int uerr_num; + int oerr_num; + + int (*transfer)(struct rz_ssi_priv *ssi, struct rz_ssi_stream *strm); +}; + +struct rz_ssi_priv { + void __iomem *base; + struct platform_device *pdev; + struct reset_control *rstc; + struct device *dev; + struct clk *sfr_clk; + struct clk *clk; + + int irq_int; + int irq_tx; + int irq_rx; + + spinlock_t lock; + + /* + * The SSI supports full-duplex transmission and reception. + * However, if an error occurs, channel reset (both transmission + * and reception reset) is required. + * So it is better to use as half-duplex (playing and recording + * should be done on separate channels). + */ + struct rz_ssi_stream playback; + struct rz_ssi_stream capture; + + /* clock */ + unsigned long audio_mck; + unsigned long audio_clk_1; + unsigned long audio_clk_2; + + bool lrckp_fsync_fall; /* LR clock polarity (SSICR.LRCKP) */ + bool bckp_rise; /* Bit clock polarity (SSICR.BCKP) */ +}; + +static void rz_ssi_reg_writel(struct rz_ssi_priv *priv, uint reg, u32 data) +{ + writel(data, (priv->base + reg)); +} + +static u32 rz_ssi_reg_readl(struct rz_ssi_priv *priv, uint reg) +{ + return readl(priv->base + reg); +} + +static void rz_ssi_reg_mask_setl(struct rz_ssi_priv __iomem *priv, uint reg, + u32 bclr, u32 bset) +{ + u32 val; + + val = readl(priv->base + reg); + val = (val & ~bclr) | bset; + writel(val, (priv->base + reg)); +} + +static inline struct snd_soc_dai * +rz_ssi_get_dai(struct snd_pcm_substream *substream) +{ + struct snd_soc_pcm_runtime *rtd = asoc_substream_to_rtd(substream); + + return asoc_rtd_to_cpu(rtd, 0); +} + +static inline bool rz_ssi_stream_is_play(struct rz_ssi_priv *ssi, + struct snd_pcm_substream *substream) +{ + return substream->stream == SNDRV_PCM_STREAM_PLAYBACK; +} + +static inline struct rz_ssi_stream * +rz_ssi_stream_get(struct rz_ssi_priv *ssi, struct snd_pcm_substream *substream) +{ + struct rz_ssi_stream *stream = &ssi->playback; + + if (substream->stream != SNDRV_PCM_STREAM_PLAYBACK) + stream = &ssi->capture; + + return stream; +} + +static int rz_ssi_stream_is_valid(struct rz_ssi_priv *ssi, + struct rz_ssi_stream *strm) +{ + unsigned long flags; + int ret; + + spin_lock_irqsave(&ssi->lock, flags); + ret = !!(strm->substream && strm->substream->runtime); + spin_unlock_irqrestore(&ssi->lock, flags); + + return ret; +} + +static int rz_ssi_stream_init(struct rz_ssi_priv *ssi, + struct rz_ssi_stream *strm, + struct snd_pcm_substream *substream) +{ + struct snd_pcm_runtime *runtime = substream->runtime; + + strm->substream = substream; + strm->sample_width = samples_to_bytes(runtime, 1); + strm->period_counter = 0; + strm->buffer_pos = 0; + + strm->oerr_num = 0; + strm->uerr_num = 0; + strm->running = 0; + + /* fifo init */ + strm->fifo_sample_size = SSI_FIFO_DEPTH; + + return 0; +} + +static void rz_ssi_stream_quit(struct rz_ssi_priv *ssi, + struct rz_ssi_stream *strm) +{ + struct snd_soc_dai *dai = rz_ssi_get_dai(strm->substream); + unsigned long flags; + + spin_lock_irqsave(&ssi->lock, flags); + strm->substream = NULL; + spin_unlock_irqrestore(&ssi->lock, flags); + + if (strm->oerr_num > 0) + dev_info(dai->dev, "overrun = %d\n", strm->oerr_num); + + if (strm->uerr_num > 0) + dev_info(dai->dev, "underrun = %d\n", strm->uerr_num); +} + +static int rz_ssi_clk_setup(struct rz_ssi_priv *ssi, unsigned int rate, + unsigned int channels) +{ + static s8 ckdv[16] = { 1, 2, 4, 8, 16, 32, 64, 128, + 6, 12, 24, 48, 96, -1, -1, -1 }; + unsigned int channel_bits = 32; /* System Word Length */ + unsigned long bclk_rate = rate * channels * channel_bits; + unsigned int div; + unsigned int i; + u32 ssicr = 0; + u32 clk_ckdv; + + /* Clear AUCKE so we can set MST */ + rz_ssi_reg_writel(ssi, SSIFCR, 0); + + /* Continue to output LRCK pin even when idle */ + rz_ssi_reg_writel(ssi, SSIOFR, SSIOFR_LRCONT); + if (ssi->audio_clk_1 && ssi->audio_clk_2) { + if (ssi->audio_clk_1 % bclk_rate) + ssi->audio_mck = ssi->audio_clk_2; + else + ssi->audio_mck = ssi->audio_clk_1; + } + + /* Clock setting */ + ssicr |= SSICR_MST; + if (ssi->audio_mck == ssi->audio_clk_1) + ssicr |= SSICR_CKS; + if (ssi->bckp_rise) + ssicr |= SSICR_BCKP; + if (ssi->lrckp_fsync_fall) + ssicr |= SSICR_LRCKP; + + /* Determine the clock divider */ + clk_ckdv = 0; + div = ssi->audio_mck / bclk_rate; + /* try to find an match */ + for (i = 0; i < ARRAY_SIZE(ckdv); i++) { + if (ckdv[i] == div) { + clk_ckdv = i; + break; + } + } + + if (i == ARRAY_SIZE(ckdv)) { + dev_err(ssi->dev, "Rate not divisible by audio clock source\n"); + return -EINVAL; + } + + /* + * DWL: Data Word Length = 16 bits + * SWL: System Word Length = 32 bits + */ + ssicr |= SSICR_CKDV(clk_ckdv); + ssicr |= SSICR_DWL(1) | SSICR_SWL(3); + rz_ssi_reg_writel(ssi, SSICR, ssicr); + rz_ssi_reg_writel(ssi, SSIFCR, + (SSIFCR_AUCKE | SSIFCR_TFRST | SSIFCR_RFRST)); + + return 0; +} + +static int rz_ssi_start(struct rz_ssi_priv *ssi, struct rz_ssi_stream *strm) +{ + bool is_play = rz_ssi_stream_is_play(ssi, strm->substream); + u32 ssicr, ssifcr; + + ssicr = rz_ssi_reg_readl(ssi, SSICR); + ssifcr = rz_ssi_reg_readl(ssi, SSIFCR) & ~0xF; + + /* FIFO interrupt thresholds */ + rz_ssi_reg_writel(ssi, SSISCR, + SSISCR_TDES(strm->fifo_sample_size / 2 - 1) | + SSISCR_RDFS(0)); + + /* enable IRQ */ + if (is_play) { + ssicr |= SSICR_TUIEN | SSICR_TOIEN; + ssifcr |= SSIFCR_TIE | SSIFCR_RFRST; + } else { + ssicr |= SSICR_RUIEN | SSICR_ROIEN; + ssifcr |= SSIFCR_RIE | SSIFCR_TFRST; + } + + rz_ssi_reg_writel(ssi, SSICR, ssicr); + rz_ssi_reg_writel(ssi, SSIFCR, ssifcr); + + /* Clear all error flags */ + rz_ssi_reg_mask_setl(ssi, SSISR, + (SSISR_TOIRQ | SSISR_TUIRQ | SSISR_ROIRQ | + SSISR_RUIRQ), 0); + + strm->running = 1; + ssicr |= is_play ? SSICR_TEN : SSICR_REN; + rz_ssi_reg_writel(ssi, SSICR, ssicr); + + return 0; +} + +static int rz_ssi_stop(struct rz_ssi_priv *ssi, struct rz_ssi_stream *strm) +{ + int timeout; + + strm->running = 0; + + /* Disable TX/RX */ + rz_ssi_reg_mask_setl(ssi, SSICR, SSICR_TEN | SSICR_REN, 0); + + /* Disable irqs */ + rz_ssi_reg_mask_setl(ssi, SSICR, SSICR_TUIEN | SSICR_TOIEN | + SSICR_RUIEN | SSICR_ROIEN, 0); + rz_ssi_reg_mask_setl(ssi, SSIFCR, SSIFCR_TIE | SSIFCR_RIE, 0); + + /* Clear all error flags */ + rz_ssi_reg_mask_setl(ssi, SSISR, + (SSISR_TOIRQ | SSISR_TUIRQ | SSISR_ROIRQ | + SSISR_RUIRQ), 0); + + /* Wait for idle */ + timeout = 100; + while (--timeout) { + if (rz_ssi_reg_readl(ssi, SSISR) | SSISR_IIRQ) + break; + udelay(1); + } + + if (!timeout) + dev_info(ssi->dev, "timeout waiting for SSI idle\n"); + + /* Hold FIFOs in reset */ + rz_ssi_reg_mask_setl(ssi, SSIFCR, 0, + SSIFCR_TFRST | SSIFCR_RFRST); + + return 0; +} + +static void rz_ssi_pointer_update(struct rz_ssi_stream *strm, int frames) +{ + struct snd_pcm_substream *substream = strm->substream; + struct snd_pcm_runtime *runtime; + int current_period; + + if (!strm->running || !substream || !substream->runtime) + return; + + runtime = substream->runtime; + strm->buffer_pos += frames; + WARN_ON(strm->buffer_pos > runtime->buffer_size); + + /* ring buffer */ + if (strm->buffer_pos == runtime->buffer_size) + strm->buffer_pos = 0; + + current_period = strm->buffer_pos / runtime->period_size; + if (strm->period_counter != current_period) { + snd_pcm_period_elapsed(strm->substream); + strm->period_counter = current_period; + } +} + +static int rz_ssi_pio_recv(struct rz_ssi_priv *ssi, struct rz_ssi_stream *strm) +{ + struct snd_pcm_substream *substream = strm->substream; + struct snd_pcm_runtime *runtime; + u16 *buf; + int fifo_samples; + int frames_left; + int samples = 0; + int i; + + if (!rz_ssi_stream_is_valid(ssi, strm)) + return -EINVAL; + + runtime = substream->runtime; + /* frames left in this period */ + frames_left = runtime->period_size - (strm->buffer_pos % + runtime->period_size); + if (frames_left == 0) + frames_left = runtime->period_size; + + /* Samples in RX FIFO */ + fifo_samples = (rz_ssi_reg_readl(ssi, SSIFSR) >> + SSIFSR_RDC_SHIFT) & SSIFSR_RDC_MASK; + + /* Only read full frames at a time */ + while (frames_left && (fifo_samples >= runtime->channels)) { + samples += runtime->channels; + fifo_samples -= runtime->channels; + frames_left--; + } + + /* not enough samples yet */ + if (samples == 0) + return 0; + + /* calculate new buffer index */ + buf = (u16 *)(runtime->dma_area); + buf += strm->buffer_pos * runtime->channels; + + /* Note, only supports 16-bit samples */ + for (i = 0; i < samples; i++) + *buf++ = (u16)(rz_ssi_reg_readl(ssi, SSIFRDR) >> 16); + + rz_ssi_reg_mask_setl(ssi, SSIFSR, SSIFSR_RDF, 0); + rz_ssi_pointer_update(strm, samples / runtime->channels); + + /* + * If we finished this period, but there are more samples in + * the RX FIFO, call this function again + */ + if (frames_left == 0 && fifo_samples >= runtime->channels) + rz_ssi_pio_recv(ssi, strm); + + return 0; +} + +static int rz_ssi_pio_send(struct rz_ssi_priv *ssi, struct rz_ssi_stream *strm) +{ + struct snd_pcm_substream *substream = strm->substream; + struct snd_pcm_runtime *runtime = substream->runtime; + int sample_space; + int samples = 0; + int frames_left; + int i; + u32 ssifsr; + u16 *buf; + + if (!rz_ssi_stream_is_valid(ssi, strm)) + return -EINVAL; + + /* frames left in this period */ + frames_left = runtime->period_size - (strm->buffer_pos % + runtime->period_size); + if (frames_left == 0) + frames_left = runtime->period_size; + + sample_space = strm->fifo_sample_size; + ssifsr = rz_ssi_reg_readl(ssi, SSIFSR); + sample_space -= (ssifsr >> SSIFSR_TDC_SHIFT) & SSIFSR_TDC_MASK; + + /* Only add full frames at a time */ + while (frames_left && (sample_space >= runtime->channels)) { + samples += runtime->channels; + sample_space -= runtime->channels; + frames_left--; + } + + /* no space to send anything right now */ + if (samples == 0) + return 0; + + /* calculate new buffer index */ + buf = (u16 *)(runtime->dma_area); + buf += strm->buffer_pos * runtime->channels; + + /* Note, only supports 16-bit samples */ + for (i = 0; i < samples; i++) + rz_ssi_reg_writel(ssi, SSIFTDR, ((u32)(*buf++) << 16)); + + rz_ssi_reg_mask_setl(ssi, SSIFSR, SSIFSR_TDE, 0); + rz_ssi_pointer_update(strm, samples / runtime->channels); + + return 0; +} + +static irqreturn_t rz_ssi_interrupt(int irq, void *data) +{ + struct rz_ssi_stream *strm = NULL; + struct rz_ssi_priv *ssi = data; + u32 ssisr = rz_ssi_reg_readl(ssi, SSISR); + + if (ssi->playback.substream) + strm = &ssi->playback; + else if (ssi->capture.substream) + strm = &ssi->capture; + else + return IRQ_HANDLED; /* Left over TX/RX interrupt */ + + if (irq == ssi->irq_int) { /* error or idle */ + if (ssisr & SSISR_TUIRQ) + strm->uerr_num++; + if (ssisr & SSISR_TOIRQ) + strm->oerr_num++; + if (ssisr & SSISR_RUIRQ) + strm->uerr_num++; + if (ssisr & SSISR_ROIRQ) + strm->oerr_num++; + + if (ssisr & (SSISR_TUIRQ | SSISR_TOIRQ | SSISR_RUIRQ | + SSISR_ROIRQ)) { + /* Error handling */ + /* You must reset (stop/restart) after each interrupt */ + rz_ssi_stop(ssi, strm); + + /* Clear all flags */ + rz_ssi_reg_mask_setl(ssi, SSISR, SSISR_TOIRQ | + SSISR_TUIRQ | SSISR_ROIRQ | + SSISR_RUIRQ, 0); + + /* Add/remove more data */ + strm->transfer(ssi, strm); + + /* Resume */ + rz_ssi_start(ssi, strm); + } + } + + if (!strm->running) + return IRQ_HANDLED; + + /* tx data empty */ + if (irq == ssi->irq_tx) + strm->transfer(ssi, &ssi->playback); + + /* rx data full */ + if (irq == ssi->irq_rx) { + strm->transfer(ssi, &ssi->capture); + rz_ssi_reg_mask_setl(ssi, SSIFSR, SSIFSR_RDF, 0); + } + + return IRQ_HANDLED; +} + +static int rz_ssi_dai_trigger(struct snd_pcm_substream *substream, int cmd, + struct snd_soc_dai *dai) +{ + struct rz_ssi_priv *ssi = snd_soc_dai_get_drvdata(dai); + struct rz_ssi_stream *strm = rz_ssi_stream_get(ssi, substream); + int ret = 0; + + switch (cmd) { + case SNDRV_PCM_TRIGGER_START: + /* Soft Reset */ + rz_ssi_reg_mask_setl(ssi, SSIFCR, 0, SSIFCR_SSIRST); + rz_ssi_reg_mask_setl(ssi, SSIFCR, SSIFCR_SSIRST, 0); + udelay(5); + + ret = rz_ssi_stream_init(ssi, strm, substream); + if (ret) + goto done; + + ret = strm->transfer(ssi, strm); + if (ret) + goto done; + + ret = rz_ssi_start(ssi, strm); + break; + case SNDRV_PCM_TRIGGER_STOP: + rz_ssi_stop(ssi, strm); + rz_ssi_stream_quit(ssi, strm); + break; + } + +done: + return ret; +} + +static int rz_ssi_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) +{ + struct rz_ssi_priv *ssi = snd_soc_dai_get_drvdata(dai); + + switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { + case SND_SOC_DAIFMT_CBC_CFC: + break; + default: + dev_err(ssi->dev, "Codec should be clk and frame consumer\n"); + return -EINVAL; + } + + /* + * set clock polarity + * + * "normal" BCLK = Signal is available at rising edge of BCLK + * "normal" FSYNC = (I2S) Left ch starts with falling FSYNC edge + */ + switch (fmt & SND_SOC_DAIFMT_INV_MASK) { + case SND_SOC_DAIFMT_NB_NF: + ssi->bckp_rise = false; + ssi->lrckp_fsync_fall = false; + break; + case SND_SOC_DAIFMT_NB_IF: + ssi->bckp_rise = false; + ssi->lrckp_fsync_fall = true; + break; + case SND_SOC_DAIFMT_IB_NF: + ssi->bckp_rise = true; + ssi->lrckp_fsync_fall = false; + break; + case SND_SOC_DAIFMT_IB_IF: + ssi->bckp_rise = true; + ssi->lrckp_fsync_fall = true; + break; + default: + return -EINVAL; + } + + /* only i2s support */ + switch (fmt & SND_SOC_DAIFMT_FORMAT_MASK) { + case SND_SOC_DAIFMT_I2S: + break; + default: + dev_err(ssi->dev, "Only I2S mode is supported.\n"); + return -EINVAL; + } + + return 0; +} + +static int rz_ssi_dai_hw_params(struct snd_pcm_substream *substream, + struct snd_pcm_hw_params *params, + struct snd_soc_dai *dai) +{ + struct rz_ssi_priv *ssi = snd_soc_dai_get_drvdata(dai); + unsigned int sample_bits = hw_param_interval(params, + SNDRV_PCM_HW_PARAM_SAMPLE_BITS)->min; + unsigned int channels = params_channels(params); + + if (sample_bits != 16) { + dev_err(ssi->dev, "Unsupported sample width: %d\n", + sample_bits); + return -EINVAL; + } + + if (channels != 2) { + dev_err(ssi->dev, "Number of channels not matched: %d\n", + channels); + return -EINVAL; + } + + return rz_ssi_clk_setup(ssi, params_rate(params), + params_channels(params)); +} + +static const struct snd_soc_dai_ops rz_ssi_dai_ops = { + .trigger = rz_ssi_dai_trigger, + .set_fmt = rz_ssi_dai_set_fmt, + .hw_params = rz_ssi_dai_hw_params, +}; + +static const struct snd_pcm_hardware rz_ssi_pcm_hardware = { + .info = SNDRV_PCM_INFO_INTERLEAVED | + SNDRV_PCM_INFO_MMAP | + SNDRV_PCM_INFO_MMAP_VALID, + .buffer_bytes_max = PREALLOC_BUFFER, + .period_bytes_min = 32, + .period_bytes_max = 8192, + .channels_min = SSI_CHAN_MIN, + .channels_max = SSI_CHAN_MAX, + .periods_min = 1, + .periods_max = 32, + .fifo_size = 32 * 2, +}; + +static int rz_ssi_pcm_open(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + snd_soc_set_runtime_hwparams(substream, &rz_ssi_pcm_hardware); + + return snd_pcm_hw_constraint_integer(substream->runtime, + SNDRV_PCM_HW_PARAM_PERIODS); +} + +static snd_pcm_uframes_t rz_ssi_pcm_pointer(struct snd_soc_component *component, + struct snd_pcm_substream *substream) +{ + struct snd_soc_dai *dai = rz_ssi_get_dai(substream); + struct rz_ssi_priv *ssi = snd_soc_dai_get_drvdata(dai); + struct rz_ssi_stream *strm = rz_ssi_stream_get(ssi, substream); + + return strm->buffer_pos; +} + +static int rz_ssi_pcm_new(struct snd_soc_component *component, + struct snd_soc_pcm_runtime *rtd) +{ + snd_pcm_set_managed_buffer_all(rtd->pcm, SNDRV_DMA_TYPE_DEV, + rtd->card->snd_card->dev, + PREALLOC_BUFFER, PREALLOC_BUFFER_MAX); + return 0; +} + +static struct snd_soc_dai_driver rz_ssi_soc_dai[] = { + { + .name = "rz-ssi-dai", + .playback = { + .rates = SSI_RATES, + .formats = SSI_FMTS, + .channels_min = SSI_CHAN_MIN, + .channels_max = SSI_CHAN_MAX, + }, + .capture = { + .rates = SSI_RATES, + .formats = SSI_FMTS, + .channels_min = SSI_CHAN_MIN, + .channels_max = SSI_CHAN_MAX, + }, + .ops = &rz_ssi_dai_ops, + }, +}; + +static const struct snd_soc_component_driver rz_ssi_soc_component = { + .name = "rz-ssi", + .open = rz_ssi_pcm_open, + .pointer = rz_ssi_pcm_pointer, + .pcm_construct = rz_ssi_pcm_new, +}; + +static int rz_ssi_probe(struct platform_device *pdev) +{ + struct rz_ssi_priv *ssi; + struct clk *audio_clk; + int ret; + + ssi = devm_kzalloc(&pdev->dev, sizeof(*ssi), GFP_KERNEL); + if (!ssi) + return -ENOMEM; + + ssi->pdev = pdev; + ssi->dev = &pdev->dev; + ssi->base = devm_platform_ioremap_resource(pdev, 0); + if (IS_ERR(ssi->base)) + return PTR_ERR(ssi->base); + + ssi->clk = devm_clk_get(&pdev->dev, "ssi"); + if (IS_ERR(ssi->clk)) + return PTR_ERR(ssi->clk); + + ssi->sfr_clk = devm_clk_get(&pdev->dev, "ssi_sfr"); + if (IS_ERR(ssi->sfr_clk)) + return PTR_ERR(ssi->sfr_clk); + + audio_clk = devm_clk_get(&pdev->dev, "audio_clk1"); + if (IS_ERR(audio_clk)) + return dev_err_probe(&pdev->dev, PTR_ERR(audio_clk), + "no audio clk1"); + + ssi->audio_clk_1 = clk_get_rate(audio_clk); + audio_clk = devm_clk_get(&pdev->dev, "audio_clk2"); + if (IS_ERR(audio_clk)) + return dev_err_probe(&pdev->dev, PTR_ERR(audio_clk), + "no audio clk2"); + + ssi->audio_clk_2 = clk_get_rate(audio_clk); + if (!(ssi->audio_clk_1 || ssi->audio_clk_2)) + return dev_err_probe(&pdev->dev, -EINVAL, + "no audio clk1 or audio clk2"); + + ssi->audio_mck = ssi->audio_clk_1 ? ssi->audio_clk_1 : ssi->audio_clk_2; + + ssi->playback.transfer = rz_ssi_pio_send; + ssi->capture.transfer = rz_ssi_pio_recv; + ssi->playback.priv = ssi; + ssi->capture.priv = ssi; + + /* Error Interrupt */ + ssi->irq_int = platform_get_irq_byname(pdev, "int_req"); + if (ssi->irq_int < 0) + return dev_err_probe(&pdev->dev, -ENODEV, + "Unable to get SSI int_req IRQ\n"); + + ret = devm_request_irq(&pdev->dev, ssi->irq_int, &rz_ssi_interrupt, + 0, dev_name(&pdev->dev), ssi); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, + "irq request error (int_req)\n"); + + /* Tx and Rx interrupts (pio only) */ + ssi->irq_tx = platform_get_irq_byname(pdev, "dma_tx"); + if (ssi->irq_tx < 0) + return dev_err_probe(&pdev->dev, -ENODEV, + "Unable to get SSI dma_tx IRQ\n"); + + ret = devm_request_irq(&pdev->dev, ssi->irq_tx, &rz_ssi_interrupt, 0, + dev_name(&pdev->dev), ssi); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, + "irq request error (dma_tx)\n"); + + ssi->irq_rx = platform_get_irq_byname(pdev, "dma_rx"); + if (ssi->irq_rx < 0) + return dev_err_probe(&pdev->dev, -ENODEV, + "Unable to get SSI dma_rx IRQ\n"); + + ret = devm_request_irq(&pdev->dev, ssi->irq_rx, &rz_ssi_interrupt, 0, + dev_name(&pdev->dev), ssi); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, + "irq request error (dma_rx)\n"); + + ssi->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL); + if (IS_ERR(ssi->rstc)) + return PTR_ERR(ssi->rstc); + + reset_control_deassert(ssi->rstc); + pm_runtime_enable(&pdev->dev); + pm_runtime_resume_and_get(&pdev->dev); + + spin_lock_init(&ssi->lock); + dev_set_drvdata(&pdev->dev, ssi); + ret = devm_snd_soc_register_component(&pdev->dev, &rz_ssi_soc_component, + rz_ssi_soc_dai, + ARRAY_SIZE(rz_ssi_soc_dai)); + if (ret < 0) { + pm_runtime_put(ssi->dev); + pm_runtime_disable(ssi->dev); + reset_control_assert(ssi->rstc); + dev_err(&pdev->dev, "failed to register snd component\n"); + } + + return ret; +} + +static int rz_ssi_remove(struct platform_device *pdev) +{ + struct rz_ssi_priv *ssi = dev_get_drvdata(&pdev->dev); + + pm_runtime_put(ssi->dev); + pm_runtime_disable(ssi->dev); + reset_control_assert(ssi->rstc); + + return 0; +} + +static const struct of_device_id rz_ssi_of_match[] = { + { .compatible = "renesas,rz-ssi", }, + {/* Sentinel */}, +}; +MODULE_DEVICE_TABLE(of, rz_ssi_of_match); + +static struct platform_driver rz_ssi_driver = { + .driver = { + .name = "rz-ssi-pcm-audio", + .of_match_table = rz_ssi_of_match, + }, + .probe = rz_ssi_probe, + .remove = rz_ssi_remove, +}; + +module_platform_driver(rz_ssi_driver); + +MODULE_LICENSE("GPL v2"); +MODULE_DESCRIPTION("Renesas RZ/G2L ASoC Serial Sound Interface Driver"); +MODULE_AUTHOR("Biju Das <biju.das.jz@...>"); -- 2.17.1
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[PATCH 5.10.y-cip 05/31] ASoC: sh: rz-ssi: Add SSI DMAC support
Lad Prabhakar
From: Biju Das <biju.das.jz@...>
commit 26ac471c5354583cf4fe0e42537a2c6b84d6d74e upstream. Add SSI DMAC support to RZ/G2L SoC. Signed-off-by: Biju Das <biju.das.jz@...> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Link: https://lore.kernel.org/r/20210813091156.10700-4-biju.das.jz@bp.renesas.com Signed-off-by: Mark Brown <broonie@...> [PL: dropped modern terminology for clocking] Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- sound/soc/sh/rz-ssi.c | 260 ++++++++++++++++++++++++++++++++++++------ 1 file changed, 226 insertions(+), 34 deletions(-) diff --git a/sound/soc/sh/rz-ssi.c b/sound/soc/sh/rz-ssi.c index 615fa81f061e..4e702b7d5b49 100644 --- a/sound/soc/sh/rz-ssi.c +++ b/sound/soc/sh/rz-ssi.c @@ -7,6 +7,7 @@ // #include <linux/clk.h> +#include <linux/dmaengine.h> #include <linux/io.h> #include <linux/module.h> #include <linux/of_device.h> @@ -86,6 +87,7 @@ struct rz_ssi_stream { struct rz_ssi_priv *priv; struct snd_pcm_substream *substream; int fifo_sample_size; /* sample capacity of SSI FIFO */ + int dma_buffer_pos; /* The address for the next DMA descriptor */ int period_counter; /* for keeping track of periods transferred */ int sample_width; int buffer_pos; /* current frame position in the buffer */ @@ -94,6 +96,8 @@ struct rz_ssi_stream { int uerr_num; int oerr_num; + struct dma_chan *dma_ch; + int (*transfer)(struct rz_ssi_priv *ssi, struct rz_ssi_stream *strm); }; @@ -105,6 +109,7 @@ struct rz_ssi_priv { struct clk *sfr_clk; struct clk *clk; + phys_addr_t phys; int irq_int; int irq_tx; int irq_rx; @@ -128,8 +133,11 @@ struct rz_ssi_priv { bool lrckp_fsync_fall; /* LR clock polarity (SSICR.LRCKP) */ bool bckp_rise; /* Bit clock polarity (SSICR.BCKP) */ + bool dma_rt; }; +static void rz_ssi_dma_complete(void *data); + static void rz_ssi_reg_writel(struct rz_ssi_priv *priv, uint reg, u32 data) { writel(data, (priv->base + reg)); @@ -175,6 +183,11 @@ rz_ssi_stream_get(struct rz_ssi_priv *ssi, struct snd_pcm_substream *substream) return stream; } +static inline bool rz_ssi_is_dma_enabled(struct rz_ssi_priv *ssi) +{ + return (ssi->playback.dma_ch || ssi->capture.dma_ch); +} + static int rz_ssi_stream_is_valid(struct rz_ssi_priv *ssi, struct rz_ssi_stream *strm) { @@ -196,6 +209,7 @@ static int rz_ssi_stream_init(struct rz_ssi_priv *ssi, strm->substream = substream; strm->sample_width = samples_to_bytes(runtime, 1); + strm->dma_buffer_pos = 0; strm->period_counter = 0; strm->buffer_pos = 0; @@ -297,9 +311,12 @@ static int rz_ssi_start(struct rz_ssi_priv *ssi, struct rz_ssi_stream *strm) ssifcr = rz_ssi_reg_readl(ssi, SSIFCR) & ~0xF; /* FIFO interrupt thresholds */ - rz_ssi_reg_writel(ssi, SSISCR, - SSISCR_TDES(strm->fifo_sample_size / 2 - 1) | - SSISCR_RDFS(0)); + if (rz_ssi_is_dma_enabled(ssi)) + rz_ssi_reg_writel(ssi, SSISCR, 0); + else + rz_ssi_reg_writel(ssi, SSISCR, + SSISCR_TDES(strm->fifo_sample_size / 2 - 1) | + SSISCR_RDFS(0)); /* enable IRQ */ if (is_play) { @@ -334,6 +351,10 @@ static int rz_ssi_stop(struct rz_ssi_priv *ssi, struct rz_ssi_stream *strm) /* Disable TX/RX */ rz_ssi_reg_mask_setl(ssi, SSICR, SSICR_TEN | SSICR_REN, 0); + /* Cancel all remaining DMA transactions */ + if (rz_ssi_is_dma_enabled(ssi)) + dmaengine_terminate_async(strm->dma_ch); + /* Disable irqs */ rz_ssi_reg_mask_setl(ssi, SSICR, SSICR_TUIEN | SSICR_TOIEN | SSICR_RUIEN | SSICR_ROIEN, 0); @@ -549,12 +570,143 @@ static irqreturn_t rz_ssi_interrupt(int irq, void *data) return IRQ_HANDLED; } +static int rz_ssi_dma_slave_config(struct rz_ssi_priv *ssi, + struct dma_chan *dma_ch, bool is_play) +{ + struct dma_slave_config cfg; + + memset(&cfg, 0, sizeof(cfg)); + + cfg.direction = is_play ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM; + cfg.dst_addr = ssi->phys + SSIFTDR; + cfg.src_addr = ssi->phys + SSIFRDR; + cfg.src_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; + cfg.dst_addr_width = DMA_SLAVE_BUSWIDTH_2_BYTES; + + return dmaengine_slave_config(dma_ch, &cfg); +} + +static int rz_ssi_dma_transfer(struct rz_ssi_priv *ssi, + struct rz_ssi_stream *strm) +{ + struct snd_pcm_substream *substream = strm->substream; + struct dma_async_tx_descriptor *desc; + struct snd_pcm_runtime *runtime; + enum dma_transfer_direction dir; + u32 dma_paddr, dma_size; + int amount; + + if (!rz_ssi_stream_is_valid(ssi, strm)) + return -EINVAL; + + runtime = substream->runtime; + if (runtime->status->state == SNDRV_PCM_STATE_DRAINING) + /* + * Stream is ending, so do not queue up any more DMA + * transfers otherwise we play partial sound clips + * because we can't shut off the DMA quick enough. + */ + return 0; + + dir = rz_ssi_stream_is_play(ssi, substream) ? DMA_MEM_TO_DEV : DMA_DEV_TO_MEM; + + /* Always transfer 1 period */ + amount = runtime->period_size; + + /* DMA physical address and size */ + dma_paddr = runtime->dma_addr + frames_to_bytes(runtime, + strm->dma_buffer_pos); + dma_size = frames_to_bytes(runtime, amount); + desc = dmaengine_prep_slave_single(strm->dma_ch, dma_paddr, dma_size, + dir, + DMA_PREP_INTERRUPT | DMA_CTRL_ACK); + if (!desc) { + dev_err(ssi->dev, "dmaengine_prep_slave_single() fail\n"); + return -ENOMEM; + } + + desc->callback = rz_ssi_dma_complete; + desc->callback_param = strm; + + if (dmaengine_submit(desc) < 0) { + dev_err(ssi->dev, "dmaengine_submit() fail\n"); + return -EIO; + } + + /* Update DMA pointer */ + strm->dma_buffer_pos += amount; + if (strm->dma_buffer_pos >= runtime->buffer_size) + strm->dma_buffer_pos = 0; + + /* Start DMA */ + dma_async_issue_pending(strm->dma_ch); + + return 0; +} + +static void rz_ssi_dma_complete(void *data) +{ + struct rz_ssi_stream *strm = (struct rz_ssi_stream *)data; + + if (!strm->running || !strm->substream || !strm->substream->runtime) + return; + + /* Note that next DMA transaction has probably already started */ + rz_ssi_pointer_update(strm, strm->substream->runtime->period_size); + + /* Queue up another DMA transaction */ + rz_ssi_dma_transfer(strm->priv, strm); +} + +static void rz_ssi_release_dma_channels(struct rz_ssi_priv *ssi) +{ + if (ssi->playback.dma_ch) { + dma_release_channel(ssi->playback.dma_ch); + ssi->playback.dma_ch = NULL; + if (ssi->dma_rt) + ssi->dma_rt = false; + } + + if (ssi->capture.dma_ch) { + dma_release_channel(ssi->capture.dma_ch); + ssi->capture.dma_ch = NULL; + } +} + +static int rz_ssi_dma_request(struct rz_ssi_priv *ssi, struct device *dev) +{ + ssi->playback.dma_ch = dma_request_chan(dev, "tx"); + ssi->capture.dma_ch = dma_request_chan(dev, "rx"); + if (!ssi->playback.dma_ch && !ssi->capture.dma_ch) { + ssi->playback.dma_ch = dma_request_chan(dev, "rt"); + if (!ssi->playback.dma_ch) + goto no_dma; + + ssi->dma_rt = true; + } + + if (ssi->playback.dma_ch && + (rz_ssi_dma_slave_config(ssi, ssi->playback.dma_ch, true) < 0)) + goto no_dma; + + if (ssi->capture.dma_ch && + (rz_ssi_dma_slave_config(ssi, ssi->capture.dma_ch, false) < 0)) + goto no_dma; + + return 0; + +no_dma: + rz_ssi_release_dma_channels(ssi); + + return -ENODEV; +} + static int rz_ssi_dai_trigger(struct snd_pcm_substream *substream, int cmd, struct snd_soc_dai *dai) { struct rz_ssi_priv *ssi = snd_soc_dai_get_drvdata(dai); struct rz_ssi_stream *strm = rz_ssi_stream_get(ssi, substream); - int ret = 0; + int ret = 0, i, num_transfer = 1; switch (cmd) { case SNDRV_PCM_TRIGGER_START: @@ -567,9 +719,29 @@ static int rz_ssi_dai_trigger(struct snd_pcm_substream *substream, int cmd, if (ret) goto done; - ret = strm->transfer(ssi, strm); - if (ret) - goto done; + if (ssi->dma_rt) { + bool is_playback; + + is_playback = rz_ssi_stream_is_play(ssi, substream); + ret = rz_ssi_dma_slave_config(ssi, ssi->playback.dma_ch, + is_playback); + /* Fallback to pio */ + if (ret < 0) { + ssi->playback.transfer = rz_ssi_pio_send; + ssi->capture.transfer = rz_ssi_pio_recv; + rz_ssi_release_dma_channels(ssi); + } + } + + /* For DMA, queue up multiple DMA descriptors */ + if (rz_ssi_is_dma_enabled(ssi)) + num_transfer = 4; + + for (i = 0; i < num_transfer; i++) { + ret = strm->transfer(ssi, strm); + if (ret) + goto done; + } ret = rz_ssi_start(ssi, strm); break; @@ -587,8 +759,8 @@ static int rz_ssi_dai_set_fmt(struct snd_soc_dai *dai, unsigned int fmt) { struct rz_ssi_priv *ssi = snd_soc_dai_get_drvdata(dai); - switch (fmt & SND_SOC_DAIFMT_CLOCK_PROVIDER_MASK) { - case SND_SOC_DAIFMT_CBC_CFC: + switch (fmt & SND_SOC_DAIFMT_MASTER_MASK) { + case SND_SOC_DAIFMT_CBS_CFS: break; default: dev_err(ssi->dev, "Codec should be clk and frame consumer\n"); @@ -737,6 +909,7 @@ static int rz_ssi_probe(struct platform_device *pdev) { struct rz_ssi_priv *ssi; struct clk *audio_clk; + struct resource *res; int ret; ssi = devm_kzalloc(&pdev->dev, sizeof(*ssi), GFP_KERNEL); @@ -745,10 +918,11 @@ static int rz_ssi_probe(struct platform_device *pdev) ssi->pdev = pdev; ssi->dev = &pdev->dev; - ssi->base = devm_platform_ioremap_resource(pdev, 0); + ssi->base = devm_platform_get_and_ioremap_resource(pdev, 0, &res); if (IS_ERR(ssi->base)) return PTR_ERR(ssi->base); + ssi->phys = res->start; ssi->clk = devm_clk_get(&pdev->dev, "ssi"); if (IS_ERR(ssi->clk)) return PTR_ERR(ssi->clk); @@ -775,8 +949,18 @@ static int rz_ssi_probe(struct platform_device *pdev) ssi->audio_mck = ssi->audio_clk_1 ? ssi->audio_clk_1 : ssi->audio_clk_2; - ssi->playback.transfer = rz_ssi_pio_send; - ssi->capture.transfer = rz_ssi_pio_recv; + /* Detect DMA support */ + ret = rz_ssi_dma_request(ssi, &pdev->dev); + if (ret < 0) { + dev_warn(&pdev->dev, "DMA not available, using PIO\n"); + ssi->playback.transfer = rz_ssi_pio_send; + ssi->capture.transfer = rz_ssi_pio_recv; + } else { + dev_info(&pdev->dev, "DMA enabled"); + ssi->playback.transfer = rz_ssi_dma_transfer; + ssi->capture.transfer = rz_ssi_dma_transfer; + } + ssi->playback.priv = ssi; ssi->capture.priv = ssi; @@ -792,28 +976,32 @@ static int rz_ssi_probe(struct platform_device *pdev) return dev_err_probe(&pdev->dev, ret, "irq request error (int_req)\n"); - /* Tx and Rx interrupts (pio only) */ - ssi->irq_tx = platform_get_irq_byname(pdev, "dma_tx"); - if (ssi->irq_tx < 0) - return dev_err_probe(&pdev->dev, -ENODEV, - "Unable to get SSI dma_tx IRQ\n"); - - ret = devm_request_irq(&pdev->dev, ssi->irq_tx, &rz_ssi_interrupt, 0, - dev_name(&pdev->dev), ssi); - if (ret < 0) - return dev_err_probe(&pdev->dev, ret, - "irq request error (dma_tx)\n"); - - ssi->irq_rx = platform_get_irq_byname(pdev, "dma_rx"); - if (ssi->irq_rx < 0) - return dev_err_probe(&pdev->dev, -ENODEV, - "Unable to get SSI dma_rx IRQ\n"); - - ret = devm_request_irq(&pdev->dev, ssi->irq_rx, &rz_ssi_interrupt, 0, - dev_name(&pdev->dev), ssi); - if (ret < 0) - return dev_err_probe(&pdev->dev, ret, - "irq request error (dma_rx)\n"); + if (!rz_ssi_is_dma_enabled(ssi)) { + /* Tx and Rx interrupts (pio only) */ + ssi->irq_tx = platform_get_irq_byname(pdev, "dma_tx"); + if (ssi->irq_tx < 0) + return dev_err_probe(&pdev->dev, -ENODEV, + "Unable to get SSI dma_tx IRQ\n"); + + ret = devm_request_irq(&pdev->dev, ssi->irq_tx, + &rz_ssi_interrupt, 0, + dev_name(&pdev->dev), ssi); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, + "irq request error (dma_tx)\n"); + + ssi->irq_rx = platform_get_irq_byname(pdev, "dma_rx"); + if (ssi->irq_rx < 0) + return dev_err_probe(&pdev->dev, -ENODEV, + "Unable to get SSI dma_rx IRQ\n"); + + ret = devm_request_irq(&pdev->dev, ssi->irq_rx, + &rz_ssi_interrupt, 0, + dev_name(&pdev->dev), ssi); + if (ret < 0) + return dev_err_probe(&pdev->dev, ret, + "irq request error (dma_rx)\n"); + } ssi->rstc = devm_reset_control_get_exclusive(&pdev->dev, NULL); if (IS_ERR(ssi->rstc)) @@ -829,6 +1017,8 @@ static int rz_ssi_probe(struct platform_device *pdev) rz_ssi_soc_dai, ARRAY_SIZE(rz_ssi_soc_dai)); if (ret < 0) { + rz_ssi_release_dma_channels(ssi); + pm_runtime_put(ssi->dev); pm_runtime_disable(ssi->dev); reset_control_assert(ssi->rstc); @@ -842,6 +1032,8 @@ static int rz_ssi_remove(struct platform_device *pdev) { struct rz_ssi_priv *ssi = dev_get_drvdata(&pdev->dev); + rz_ssi_release_dma_channels(ssi); + pm_runtime_put(ssi->dev); pm_runtime_disable(ssi->dev); reset_control_assert(ssi->rstc); -- 2.17.1
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[PATCH 5.10.y-cip 04/31] ASoC: dt-bindings: renesas,rz-ssi: Update slave dma channel configuration parameter
Lad Prabhakar
From: Biju Das <biju.das.jz@...>
commit bed0b1c1e88a27b76c74584128cadebc6fa58622 upstream. The DMAC on RZ/G2L has specific slave channel configuration parameters for SSI. This patch updates the dmas description and example node to include the encoded slave channel configuration. Signed-off-by: Biju Das <biju.das.jz@...> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Link: https://lore.kernel.org/r/20210813091156.10700-3-biju.das.jz@bp.renesas.com Signed-off-by: Mark Brown <broonie@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- .../bindings/sound/renesas,rz-ssi.yaml | 22 +++++++++++++++++-- 1 file changed, 20 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml b/Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml index 471937cb8d05..414ff8035a4e 100644 --- a/Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml +++ b/Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml @@ -48,6 +48,24 @@ properties: dmas: minItems: 1 maxItems: 2 + description: + The first cell represents a phandle to dmac + The second cell specifies the encoded MID/RID values of the SSI port + connected to the DMA client and the slave channel configuration + parameters. + bits[0:9] - Specifies MID/RID value of a SSI channel as below + MID/RID value of SSI rx0 = 0x256 + MID/RID value of SSI tx0 = 0x255 + MID/RID value of SSI rx1 = 0x25a + MID/RID value of SSI tx1 = 0x259 + MID/RID value of SSI rt2 = 0x25f + MID/RID value of SSI rx3 = 0x262 + MID/RID value of SSI tx3 = 0x261 + bit[10] - HIEN = 1, Detects a request in response to the rising edge + of the signal + bit[11] - LVL = 0, Detects based on the edge + bits[12:14] - AM = 2, Bus cycle mode + bit[15] - TM = 0, Single transfer mode dma-names: oneOf: @@ -93,8 +111,8 @@ examples: clock-names = "ssi", "ssi_sfr", "audio_clk1", "audio_clk2"; power-domains = <&cpg>; resets = <&cpg R9A07G044_SSI0_RST_M2_REG>; - dmas = <&dmac 0x255>, - <&dmac 0x256>; + dmas = <&dmac 0x2655>, + <&dmac 0x2656>; dma-names = "tx", "rx"; #sound-dai-cells = <0>; }; -- 2.17.1
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[PATCH 5.10.y-cip 00/31] Add sound/adc support for RZ/G2L
Lad Prabhakar
Hi All,
This patch series adds Sound and ADC support for Renesas RZ/G2L SoC and enables RIIC/SOUND/CANFD/ADC on Renesas SMARC EVK. I have also included the missing driver patch for riic and kernel configs. All the patches have been cherry picked from v5.16-rc7. I have created a MR [0] for cip-kernel-config to support build testing and can be merged once this patch series is accepted. [0] https://gitlab.com/cip-project/cip-kernel/cip-kernel-config/-/merge_requests/55 Cheers, Prabhakar Biju Das (21): ASoC: dt-bindings: Document RZ/G2L bindings ASoC: dt-bindings: sound: renesas,rz-ssi: Document DMA support ASoC: sh: Add RZ/G2L SSIF-2 driver ASoC: dt-bindings: renesas,rz-ssi: Update slave dma channel configuration parameter ASoC: sh: rz-ssi: Add SSI DMAC support ASoC: sh: rz-ssi: Fix dereference of noderef expression warning ASoC: sh: rz-ssi: Fix wrong operator used issue ASoC: sh: rz-ssi: Improve error handling in rz_ssi_dma_request function clk: renesas: r9a07g044: Add SSIF-2 clock and reset entries arm64: dts: renesas: r9a07g044: Add external audio clock nodes arm64: dts: renesas: r9a07g044: Add SSI support arm64: dts: renesas: r9a07g044: Add DMA support to SSI arm64: dts: renesas: rzg2l-smarc: Enable I2C{0,1,3} support arm64: dts: renesas: rzg2l-smarc: Add WM8978 sound codec arm64: dts: renesas: rzg2l-smarc: Enable audio arm64: dts: renesas: rzg2l-smarc: Add Mic routing arm64: defconfig: Enable SOUND_SOC_RZ arm64: defconfig: Enable SND_SOC_WM8978 clk: renesas: r9a07g044: Mark IA55_CLK and DMAC_ACLK critical i2c: riic: Add RZ/G2L support arm64: defconfig: Enable RIIC Colin Ian King (1): iio: adc: rzg2l_adc: Fix -EBUSY timeout error return Lad Prabhakar (8): dt-bindings: iio: adc: Add binding documentation for Renesas RZ/G2L A/D converter iio: adc: Add driver for Renesas RZ/G2L A/D converter clk: renesas: r9a07g044: Add clock and reset entries for ADC arm64: dts: renesas: r9a07g044: Add ADC node arm64: dts: renesas: rzg2l-smarc-som: Move extal and memory nodes to SOM DTSI arm64: dts: renesas: rzg2l-smarc-som: Enable ADC on SMARC platform arm64: dts: renesas: rzg2l-smarc: Enable CANFD arm64: defconfig: Enable RZG2L_ADC Yang Yingliang (1): iio: adc: rzg2l_adc: add missing clk_disable_unprepare() in rzg2l_adc_pm_runtime_resume() .../bindings/iio/adc/renesas,rzg2l-adc.yaml | 134 ++ .../bindings/sound/renesas,rz-ssi.yaml | 118 ++ MAINTAINERS | 8 + arch/arm64/boot/dts/renesas/r9a07g044.dtsi | 140 +++ .../boot/dts/renesas/r9a07g044l2-smarc.dts | 7 +- .../boot/dts/renesas/rzg2l-smarc-som.dtsi | 35 + arch/arm64/boot/dts/renesas/rzg2l-smarc.dtsi | 162 ++- arch/arm64/configs/defconfig | 4 + drivers/clk/renesas/r9a07g044-cpg.c | 28 + drivers/i2c/busses/i2c-riic.c | 23 +- drivers/iio/adc/Kconfig | 10 + drivers/iio/adc/Makefile | 1 + drivers/iio/adc/rzg2l_adc.c | 591 +++++++++ sound/soc/sh/Kconfig | 6 + sound/soc/sh/Makefile | 4 + sound/soc/sh/rz-ssi.c | 1074 +++++++++++++++++ 16 files changed, 2334 insertions(+), 11 deletions(-) create mode 100644 Documentation/devicetree/bindings/iio/adc/renesas,rzg2l-adc.yaml create mode 100644 Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml create mode 100644 arch/arm64/boot/dts/renesas/rzg2l-smarc-som.dtsi create mode 100644 drivers/iio/adc/rzg2l_adc.c create mode 100644 sound/soc/sh/rz-ssi.c -- 2.17.1
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[PATCH 5.10.y-cip 02/31] ASoC: dt-bindings: sound: renesas,rz-ssi: Document DMA support
Lad Prabhakar
From: Biju Das <biju.das.jz@...>
commit 5df6dfbb6de815ba3a75c788a916865212fd5221 upstream. Document DMA support in binding document. Signed-off-by: Biju Das <biju.das.jz@...> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Reviewed-by: Rob Herring <robh@...> Link: https://lore.kernel.org/r/20210719134040.7964-7-biju.das.jz@bp.renesas.com Signed-off-by: Mark Brown <broonie@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- .../devicetree/bindings/sound/renesas,rz-ssi.yaml | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml b/Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml index 891f381ee5b8..471937cb8d05 100644 --- a/Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml +++ b/Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml @@ -45,6 +45,18 @@ properties: resets: maxItems: 1 + dmas: + minItems: 1 + maxItems: 2 + + dma-names: + oneOf: + - items: + - const: tx + - const: rx + - items: + - const: rt + '#sound-dai-cells': const: 0 @@ -81,5 +93,8 @@ examples: clock-names = "ssi", "ssi_sfr", "audio_clk1", "audio_clk2"; power-domains = <&cpg>; resets = <&cpg R9A07G044_SSI0_RST_M2_REG>; + dmas = <&dmac 0x255>, + <&dmac 0x256>; + dma-names = "tx", "rx"; #sound-dai-cells = <0>; }; -- 2.17.1
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[PATCH 5.10.y-cip 01/31] ASoC: dt-bindings: Document RZ/G2L bindings
Lad Prabhakar
From: Biju Das <biju.das.jz@...>
commit 2b761f476f3a6e0a212c8c88e7855f66edb177e0 upstream. Document RZ/G2L ASoC serial sound interface bindings. Signed-off-by: Biju Das <biju.das.jz@...> Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> Reviewed-by: Rob Herring <robh@...> Link: https://lore.kernel.org/r/20210719134040.7964-2-biju.das.jz@bp.renesas.com Signed-off-by: Mark Brown <broonie@...> Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@...> --- .../bindings/sound/renesas,rz-ssi.yaml | 85 +++++++++++++++++++ 1 file changed, 85 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml diff --git a/Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml b/Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml new file mode 100644 index 000000000000..891f381ee5b8 --- /dev/null +++ b/Documentation/devicetree/bindings/sound/renesas,rz-ssi.yaml @@ -0,0 +1,85 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/renesas,rz-ssi.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Renesas RZ/G2L ASoC Sound Serial Interface (SSIF-2) + +maintainers: + - Biju Das <biju.das.jz@...> + +properties: + compatible: + items: + - enum: + - renesas,r9a07g044-ssi # RZ/G2{L,LC} + - const: renesas,rz-ssi + + reg: + maxItems: 1 + + interrupts: + maxItems: 4 + + interrupt-names: + items: + - const: int_req + - const: dma_rx + - const: dma_tx + - const: dma_rt + + clocks: + maxItems: 4 + + clock-names: + items: + - const: ssi + - const: ssi_sfr + - const: audio_clk1 + - const: audio_clk2 + + power-domains: + maxItems: 1 + + resets: + maxItems: 1 + + '#sound-dai-cells': + const: 0 + +required: + - compatible + - reg + - interrupts + - interrupt-names + - clocks + - clock-names + - resets + - '#sound-dai-cells' + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/clock/r9a07g044-cpg.h> + + ssi0: ssi@10049c00 { + compatible = "renesas,r9a07g044-ssi", + "renesas,rz-ssi"; + reg = <0x10049c00 0x400>; + interrupts = <GIC_SPI 326 IRQ_TYPE_LEVEL_HIGH>, + <GIC_SPI 327 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 328 IRQ_TYPE_EDGE_RISING>, + <GIC_SPI 329 IRQ_TYPE_EDGE_RISING>; + interrupt-names = "int_req", "dma_rx", "dma_tx", "dma_rt"; + clocks = <&cpg CPG_MOD R9A07G044_SSI0_PCLK2>, + <&cpg CPG_MOD R9A07G044_SSI0_PCLK_SFR>, + <&audio_clk1>, + <&audio_clk2>; + clock-names = "ssi", "ssi_sfr", "audio_clk1", "audio_clk2"; + power-domains = <&cpg>; + resets = <&cpg R9A07G044_SSI0_RST_M2_REG>; + #sound-dai-cells = <0>; + }; -- 2.17.1
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4.4.296-rt229 is released
Pavel Machek
Hi!
4.4.296-rt229 is released. If we could get corresponding 4.4.296-cip release, it would make -cip-rt release easier. Thank you, Pavel -- DENX Software Engineering GmbH, Managing Director: Wolfgang Denk HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
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Re: [PATCH 5.10.y-cip 15/21] can: rcar_canfd: Add support for RZ/G2L family
Lad Prabhakar
Hi Pavel,
toggle quoted messageShow quoted text
-----Original Message-----Thank you, I will backport the fix as soon as its available in -rc. Cheers, Prabhakar
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