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/Linux-v6.1/drivers/hsi/clients/
Dssi_protocol.c1 // SPDX-License-Identifier: GPL-2.0-only
5 * Implementation of the SSI McSAAB improved protocol.
44 #define SSIP_MAX_CMDS 5 /* Number of pre-allocated commands buffers */
45 #define SSIP_BYTES_TO_FRAMES(x) ((((x) - 1) >> 2) + 1)
48 * SSI protocol command definitions
104 * struct ssi_protocol - SSI protocol (McSAAB) data
114 * @keep_alive: Workaround for SSI HW bug
135 struct timer_list keep_alive; /* wake-up workaround */
148 /* List of ssi protocol instances */
157 data = sg_virt(msg->sgt.sgl); in ssip_set_cmd()
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DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
13 N900 (Nokia RX-51) hardware.
28 tristate "SSI protocol"
31 If you say Y here, you will enable the SSI protocol aka McSAAB.
36 tristate "HSI/SSI character driver"
39 If you say Y here, you will enable the HSI/SSI character driver.
41 serial communication with the cellular modem over HSI/SSI bus.
/Linux-v6.1/sound/soc/sh/
Drz-ssi.c1 // SPDX-License-Identifier: GPL-2.0
3 // Renesas RZ/G2L ASoC Serial Sound Interface (SSIF-2) Driver
28 /* SSI REGISTER BITS */
74 #define SSI_RATES SNDRV_PCM_RATE_8000_48000 /* 8k-44.1kHz */
85 int fifo_sample_size; /* sample capacity of SSI FIFO */
97 int (*transfer)(struct rz_ssi_priv *ssi, struct rz_ssi_stream *strm);
116 * The SSI supports full-duplex transmission and reception.
119 * So it is better to use as half-duplex (playing and recording
139 writel(data, (priv->base + reg)); in rz_ssi_reg_writel()
144 return readl(priv->base + reg); in rz_ssi_reg_readl()
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Dssi.c1 // SPDX-License-Identifier: GPL-2.0
8 // enable SSI output pins!
12 * The SSI unit has only one physical data line, so full duplex is
14 * other SSI unit for recording; however the SH7780 has only 1 SSI
18 * The SSI features "compressed mode": in this mode it continuously
57 #define CR_MUTE (1 << 3) /* SSI mute */
60 #define CR_EN (1 << 0) /* enable SSI */
62 #define SSIREG(reg) (*(unsigned long *)(ssi->mmio + (reg)))
86 * track usage of the SSI; it is simplex-only so prevent attempts of
92 struct ssi_priv *ssi = &ssi_cpu_data[dai->id]; in ssi_startup() local
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DMakefile1 # SPDX-License-Identifier: GPL-2.0
3 snd-soc-dma-sh7760-objs := dma-sh7760.o
4 obj-$(CONFIG_SND_SOC_PCM_SH7760) += snd-soc-dma-sh7760.o
6 ## audio units found on some SH-4
7 snd-soc-hac-objs := hac.o
8 snd-soc-ssi-objs := ssi.o
9 snd-soc-fsi-objs := fsi.o
10 snd-soc-siu-objs := siu_pcm.o siu_dai.o
11 obj-$(CONFIG_SND_SOC_SH4_HAC) += snd-soc-hac.o
12 obj-$(CONFIG_SND_SOC_SH4_SSI) += snd-soc-ssi.o
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/Linux-v6.1/sound/soc/fsl/
Dfsl_ssi.c1 // SPDX-License-Identifier: GPL-2.0
3 // Freescale SSI ALSA SoC Digital Audio Interface (DAI) driver
7 // Copyright 2007-2010 Freescale Semiconductor, Inc.
9 // Some notes why imx-pcm-fiq is used instead of DMA on some boards:
11 // The i.MX SSI core has some nasty limitations in AC97 mode. While most
16 // we receive in our (PCM-) data stream. The only chance we have is to
43 #include <linux/dma/imx-dma.h>
53 #include "imx-pcm.h"
55 /* Define RX and TX to index ssi->regvals array; Can be 0 or 1 only */
60 * FSLSSI_I2S_FORMATS: audio formats supported by the SSI
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Dfsl_ssi.h1 /* SPDX-License-Identifier: GPL-2.0 */
3 * fsl_ssi.h - ALSA SSI interface for the Freescale MPC8610 and i.MX SoC
7 * Copyright 2007-2008 Freescale Semiconductor, Inc.
13 /* -- SSI Register Map -- */
15 /* SSI Transmit Data Register 0 */
17 /* SSI Transmit Data Register 1 */
19 /* SSI Receive Data Register 0 */
21 /* SSI Receive Data Register 1 */
23 /* SSI Control Register */
25 /* SSI Interrupt Status Register */
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Dp1022_rdk.c1 // SPDX-License-Identifier: GPL-2.0
28 /* P1022-specific PMUXCR and DMUXCR bit definitions */
38 #define CCSR_GUTS_DMUXCR_SSI 2 /* DMA controller/channel set to SSI */
56 unsigned int shift = 16 + (8 * (1 - co) + 2 * (3 - ch)); in guts_set_dmuxcr()
58 clrsetbits_be32(&guts->dmuxcr, 3 << shift, device << shift); in guts_set_dmuxcr()
65 * machine_data: machine-specific ASoC device data
85 * This function is used to initialize the board-specific hardware.
97 dev_err(card->dev, "could not map global utilities\n"); in p1022_rdk_machine_probe()
98 return -ENOMEM; in p1022_rdk_machine_probe()
101 /* Enable SSI Tx signal */ in p1022_rdk_machine_probe()
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/Linux-v6.1/drivers/hsi/controllers/
Domap_ssi_core.c1 // SPDX-License-Identifier: GPL-2.0-only
2 /* OMAP SSI driver.
17 #include <linux/dma-mapping.h>
40 struct hsi_controller *ssi = m->private; in ssi_regs_show() local
41 struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi); in ssi_regs_show()
42 void __iomem *sys = omap_ssi->sys; in ssi_regs_show()
44 pm_runtime_get_sync(ssi->device.parent); in ssi_regs_show()
48 pm_runtime_put(ssi->device.parent); in ssi_regs_show()
55 struct hsi_controller *ssi = m->private; in ssi_gdd_regs_show() local
56 struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi); in ssi_gdd_regs_show()
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Domap_ssi_port.c1 // SPDX-License-Identifier: GPL-2.0-only
2 /* OMAP SSI port driver.
12 #include <linux/dma-mapping.h>
36 return gpiod_get_value(omap_port->wake_gpio); in ssi_wakein()
44 debugfs_remove_recursive(omap_port->dir); in ssi_debug_remove_port()
49 struct hsi_port *port = m->private; in ssi_port_regs_show()
51 struct hsi_controller *ssi = to_hsi_controller(port->device.parent); in ssi_port_regs_show() local
52 struct omap_ssi_controller *omap_ssi = hsi_controller_drvdata(ssi); in ssi_port_regs_show()
53 void __iomem *base = omap_ssi->sys; in ssi_port_regs_show()
56 pm_runtime_get_sync(omap_port->pdev); in ssi_port_regs_show()
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Domap_ssi.h1 /* SPDX-License-Identifier: GPL-2.0-only */
2 /* OMAP SSI internal interface.
23 #define SSI_BYTES_TO_FRAMES(x) ((((x) - 1) >> 2) + 1)
28 * struct omap_ssm_ctx - OMAP synchronous serial module (TX/RX) context
50 * struct omap_ssi_port - OMAP SSI port data
53 * @sst_dma: SSI transmitter physical base address
54 * @ssr_dma: SSI receiver physical base address
55 * @sst_base: SSI transmitter base address
56 * @ssr_base: SSI receiver base address
58 * @lock: Spin lock to serialize access to the SSI port
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DKconfig1 # SPDX-License-Identifier: GPL-2.0-only
8 tristate "OMAP SSI hardware driver"
12 SSI is a legacy version of HSI. It is usually used to connect
14 If you say Y here, you will enable the OMAP SSI hardware driver.
/Linux-v6.1/sound/soc/sh/rcar/
Dssi.c1 // SPDX-License-Identifier: GPL-2.0
3 // Renesas R-Car SSIU/SSI support
13 * SSI interrupt status debug message when debugging
61 #define EN (1 << 0) /* SSI Module Enable */
77 #define SSI_NAME "ssi"
101 #define RSND_SSI_NO_BUSIF (1 << 1) /* SSI+DMA without BUSIF */
107 ((pos) = ((struct rsnd_ssi *)(priv)->ssi + i)); \
110 #define rsnd_ssi_get(priv, id) ((struct rsnd_ssi *)(priv->ssi) + id)
111 #define rsnd_ssi_nr(priv) ((priv)->ssi_nr)
113 #define rsnd_ssi_is_parent(ssi, io) ((ssi) == rsnd_io_to_mod_ssip(io)) argument
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Ddma.c1 // SPDX-License-Identifier: GPL-2.0
3 // Renesas R-Car Audio DMAC support
53 #define rsnd_priv_to_dmac(p) ((struct rsnd_dma_ctrl *)(p)->dma)
55 #define rsnd_dma_to_dmaen(dma) (&(dma)->dma.en)
56 #define rsnd_dma_to_dmapp(dma) (&(dma)->dma.pp)
104 if (dmaen->chan) in rsnd_dmaen_stop()
105 dmaengine_terminate_async(dmaen->chan); in rsnd_dmaen_stop()
122 if (dmaen->chan) in rsnd_dmaen_cleanup()
123 dma_release_channel(dmaen->chan); in rsnd_dmaen_cleanup()
125 dmaen->chan = NULL; in rsnd_dmaen_cleanup()
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/Linux-v6.1/Documentation/devicetree/bindings/sound/
Drenesas,rz-ssi.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
4 $id: http://devicetree.org/schemas/sound/renesas,rz-ssi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Renesas RZ/{G2L,V2L} ASoC Sound Serial Interface (SSIF-2)
10 - Biju Das <biju.das.jz@bp.renesas.com>
15 - enum:
16 - renesas,r9a07g043-ssi # RZ/G2UL
17 - renesas,r9a07g044-ssi # RZ/G2{L,LC}
18 - renesas,r9a07g054-ssi # RZ/V2L
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Dfsl,ssi.txt3 The SSI is a serial device that communicates with audio codecs. It can
4 be programmed in AC97, I2S, left-justified, or right-justified modes.
7 - compatible: Compatible list, should contain one of the following
9 fsl,mpc8610-ssi
10 fsl,imx51-ssi
11 fsl,imx35-ssi
12 fsl,imx21-ssi
13 - cell-index: The SSI, <0> = SSI1, <1> = SSI2, and so on.
14 - reg: Offset and length of the register set for the device.
15 - interrupts: <a b> where a is the interrupt number and b is a
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Drenesas,rsnd.yaml1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
3 ---
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
7 title: Renesas R-Car Sound Driver
10 - Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
17 - items:
18 - enum:
19 - renesas,rcar_sound-r8a7778 # R-Car M1A
20 - renesas,rcar_sound-r8a7779 # R-Car H1
21 - enum:
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Drenesas,rsnd.txt1 Renesas R-Car sound
7 Renesas R-Car and RZ/G sound is constructed from below modules
11 - SRC : Sampling Rate Converter
12 - CMD
13 - CTU : Channel Transfer Unit
14 - MIX : Mixer
15 - DVC : Digital Volume and Mute Function
17 SSI : Serial Sound Interface
25 Multi channel is supported by Multi-SSI, or TDM-SSI.
27 Multi-SSI : 6ch case, you can use stereo x 3 SSI
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/Linux-v6.1/Documentation/devicetree/bindings/hsi/
Domap-ssi.txt1 OMAP SSI controller bindings
3 OMAP3's Synchronous Serial Interface (SSI) controller implements a
9 - compatible: Should include "ti,omap3-ssi" or "ti,omap4-hsi"
10 - reg-names: Contains the values "sys" and "gdd" (in this order).
11 - reg: Contains a matching register specifier for each entry
12 in reg-names.
13 - interrupt-names: Contains the value "gdd_mpu".
14 - interrupts: Contains matching interrupt information for each entry
15 in interrupt-names.
16 - ranges: Represents the bus address mapping between the main
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/Linux-v6.1/Documentation/devicetree/bindings/spi/
Dsnps,dw-apb-ssi.yaml1 # SPDX-License-Identifier: GPL-2.0-only
3 ---
4 $id: http://devicetree.org/schemas/spi/snps,dw-apb-ssi.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
10 - Mark Brown <broonie@kernel.org>
13 - $ref: "spi-controller.yaml#"
14 - if:
19 - mscc,ocelot-spi
20 - mscc,jaguar2-spi
25 - if:
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/Linux-v6.1/arch/mips/boot/dts/ingenic/
Dcu1000-neo.dts1 // SPDX-License-Identifier: GPL-2.0
2 /dts-v1/;
5 #include <dt-bindings/gpio/gpio.h>
6 #include <dt-bindings/clock/ingenic,sysost.h>
7 #include <dt-bindings/interrupt-controller/irq.h>
10 compatible = "yna,cu1000-neo", "ingenic,x1000e";
11 model = "YSH & ATIL General Board CU1000-Neo";
18 stdout-path = "serial2:115200n8";
27 compatible = "gpio-leds";
28 led-0 {
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/Linux-v6.1/arch/arm/boot/dts/
Dr8a7778.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 * Device Tree Source for the R-Car M1A (R8A77781) SoC
14 #include <dt-bindings/clock/r8a7778-clock.h>
15 #include <dt-bindings/interrupt-controller/arm-gic.h>
16 #include <dt-bindings/interrupt-controller/irq.h>
20 interrupt-parent = <&gic>;
21 #address-cells = <1>;
22 #size-cells = <1>;
25 #address-cells = <1>;
26 #size-cells = <0>;
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Dr8a7793.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 * Device Tree Source for the R-Car M2-N (R8A77930) SoC
5 * Copyright (C) 2014-2015 Renesas Electronics Corporation
8 #include <dt-bindings/clock/r8a7793-cpg-mssr.h>
9 #include <dt-bindings/interrupt-controller/arm-gic.h>
10 #include <dt-bindings/interrupt-controller/irq.h>
11 #include <dt-bindings/power/r8a7793-sysc.h>
15 #address-cells = <2>;
16 #size-cells = <2>;
37 compatible = "fixed-clock";
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Dr8a7794.dtsi1 // SPDX-License-Identifier: GPL-2.0
3 * Device Tree Source for the R-Car E2 (R8A77940) SoC
9 #include <dt-bindings/clock/r8a7794-cpg-mssr.h>
10 #include <dt-bindings/interrupt-controller/arm-gic.h>
11 #include <dt-bindings/interrupt-controller/irq.h>
12 #include <dt-bindings/power/r8a7794-sysc.h>
16 #address-cells = <2>;
17 #size-cells = <2>;
39 compatible = "fixed-clock";
40 #clock-cells = <0>;
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/Linux-v6.1/Documentation/devicetree/bindings/dma/
Dfsl-imx-sdma.txt4 - compatible : Should be one of
5 "fsl,imx25-sdma"
6 "fsl,imx31-sdma", "fsl,imx31-to1-sdma", "fsl,imx31-to2-sdma"
7 "fsl,imx35-sdma", "fsl,imx35-to1-sdma", "fsl,imx35-to2-sdma"
8 "fsl,imx51-sdma"
9 "fsl,imx53-sdma"
10 "fsl,imx6q-sdma"
11 "fsl,imx7d-sdma"
12 "fsl,imx6ul-sdma"
13 "fsl,imx8mq-sdma"
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