July 2021 - Alsa-devel - mailman.alsa-project.org

[PATCH 00/12] Add Vangogh ACP ASoC driver
by Vijendar Mukunda 16 Jul '21

16 Jul '21

This adds an ASoC driver for the ACP (Audio CoProcessor) block on AMD Vangogh APU. Vijendar Mukunda (12): ASoC: amd: add Vangogh ACP5x IP register header ASoC: amd: add Vangogh ACP PCI driver add acp5x init/de-init functions ASoC: amd: create acp5x platform devices ASoC: amd: add ACP5x PCM platform driver ASoC: amd: irq handler changes for ACP5x PCM dma driver ASoC: amd: add ACP5x pcm dma driver ops ASoC: amd: add vangogh i2s controller driver ASoC: amd: add vangogh i2s dai driver ops ASoC: amd: add vangogh pci driver pm ops ASoc: amd: add vangogh i2s dma driver pm ops ASoC: amd: enable vangogh acp5x driver build sound/soc/amd/Kconfig | 6 + sound/soc/amd/Makefile | 1 + sound/soc/amd/vangogh/Makefile | 9 + sound/soc/amd/vangogh/acp5x-i2s.c | 438 ++++++++++++++++ sound/soc/amd/vangogh/acp5x-pcm-dma.c | 527 ++++++++++++++++++++ sound/soc/amd/vangogh/acp5x.h | 188 +++++++ sound/soc/amd/vangogh/pci-acp5x.c | 356 +++++++++++++ sound/soc/amd/vangogh/vg_chip_offset_byte.h | 337 +++++++++++++ 8 files changed, 1862 insertions(+) create mode 100644 sound/soc/amd/vangogh/Makefile create mode 100644 sound/soc/amd/vangogh/acp5x-i2s.c create mode 100644 sound/soc/amd/vangogh/acp5x-pcm-dma.c create mode 100644 sound/soc/amd/vangogh/acp5x.h create mode 100644 sound/soc/amd/vangogh/pci-acp5x.c create mode 100644 sound/soc/amd/vangogh/vg_chip_offset_byte.h -- 2.17.1

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[PATCH] ASoC: codecs: lpass-rx-macro: clean up for-loop indentation in switch statement
by Colin King 15 Jul '21

15 Jul '21

From: Colin Ian King <colin.king(a)canonical.com> The for-loop is not indented enough and needs one more level of indentation. Add in the indentation across the block of code. Signed-off-by: Colin Ian King <colin.king(a)canonical.com> --- sound/soc/codecs/lpass-rx-macro.c | 65 ++++++++++++++++--------------- 1 file changed, 33 insertions(+), 32 deletions(-) diff --git a/sound/soc/codecs/lpass-rx-macro.c b/sound/soc/codecs/lpass-rx-macro.c index 3622961f7c2c..196b06898eeb 100644 --- a/sound/soc/codecs/lpass-rx-macro.c +++ b/sound/soc/codecs/lpass-rx-macro.c @@ -1722,42 +1722,43 @@ static int rx_macro_digital_mute(struct snd_soc_dai *dai, int mute, int stream) case RX_MACRO_AIF2_PB: case RX_MACRO_AIF3_PB: case RX_MACRO_AIF4_PB: - for (j = 0; j < INTERP_MAX; j++) { - reg = CDC_RX_RXn_RX_PATH_CTL(j); - mix_reg = CDC_RX_RXn_RX_PATH_MIX_CTL(j); - dsm_reg = CDC_RX_RXn_RX_PATH_DSM_CTL(j); - - if (mute) { - snd_soc_component_update_bits(component, reg, - CDC_RX_PATH_PGA_MUTE_MASK, - CDC_RX_PATH_PGA_MUTE_ENABLE); - snd_soc_component_update_bits(component, mix_reg, - CDC_RX_PATH_PGA_MUTE_MASK, - CDC_RX_PATH_PGA_MUTE_ENABLE); - } else { - snd_soc_component_update_bits(component, reg, - CDC_RX_PATH_PGA_MUTE_MASK, 0x0); - snd_soc_component_update_bits(component, mix_reg, - CDC_RX_PATH_PGA_MUTE_MASK, 0x0); - } - - if (j == INTERP_AUX) - dsm_reg = CDC_RX_RX2_RX_PATH_DSM_CTL; + for (j = 0; j < INTERP_MAX; j++) { + reg = CDC_RX_RXn_RX_PATH_CTL(j); + mix_reg = CDC_RX_RXn_RX_PATH_MIX_CTL(j); + dsm_reg = CDC_RX_RXn_RX_PATH_DSM_CTL(j); + + if (mute) { + snd_soc_component_update_bits(component, reg, + CDC_RX_PATH_PGA_MUTE_MASK, + CDC_RX_PATH_PGA_MUTE_ENABLE); + snd_soc_component_update_bits(component, mix_reg, + CDC_RX_PATH_PGA_MUTE_MASK, + CDC_RX_PATH_PGA_MUTE_ENABLE); + } else { + snd_soc_component_update_bits(component, reg, + CDC_RX_PATH_PGA_MUTE_MASK, 0x0); + snd_soc_component_update_bits(component, mix_reg, + CDC_RX_PATH_PGA_MUTE_MASK, 0x0); + } - int_mux_cfg0 = CDC_RX_INP_MUX_RX_INT0_CFG0 + j * 8; - int_mux_cfg1 = int_mux_cfg0 + 4; - int_mux_cfg0_val = snd_soc_component_read(component, int_mux_cfg0); - int_mux_cfg1_val = snd_soc_component_read(component, int_mux_cfg1); + if (j == INTERP_AUX) + dsm_reg = CDC_RX_RX2_RX_PATH_DSM_CTL; - if (snd_soc_component_read(component, dsm_reg) & 0x01) { - if (int_mux_cfg0_val || (int_mux_cfg1_val & 0xF0)) - snd_soc_component_update_bits(component, reg, 0x20, 0x20); - if (int_mux_cfg1_val & 0x0F) { - snd_soc_component_update_bits(component, reg, 0x20, 0x20); - snd_soc_component_update_bits(component, mix_reg, 0x20, 0x20); + int_mux_cfg0 = CDC_RX_INP_MUX_RX_INT0_CFG0 + j * 8; + int_mux_cfg1 = int_mux_cfg0 + 4; + int_mux_cfg0_val = snd_soc_component_read(component, int_mux_cfg0); + int_mux_cfg1_val = snd_soc_component_read(component, int_mux_cfg1); + + if (snd_soc_component_read(component, dsm_reg) & 0x01) { + if (int_mux_cfg0_val || (int_mux_cfg1_val & 0xF0)) + snd_soc_component_update_bits(component, reg, 0x20, 0x20); + if (int_mux_cfg1_val & 0x0F) { + snd_soc_component_update_bits(component, reg, 0x20, 0x20); + snd_soc_component_update_bits(component, mix_reg, 0x20, + 0x20); + } } } - } break; default: break; -- 2.31.1

2 1

[PATCH] ASoC: dt-bindings: renesas: rsnd: Fix incorrect 'port' regex schema
by Rob Herring 15 Jul '21

15 Jul '21

A property regex goes under 'patternProperties', not 'properties' schema. Otherwise, the regex is interpretted as a fixed string. Fixes: 17c2d247ddd2 ("ASoC: dt-bindings: renesas: rsnd: tidyup properties") Cc: Mark Brown <broonie(a)kernel.org> Cc: Kuninori Morimoto <kuninori.morimoto.gx(a)renesas.com> Cc: alsa-devel(a)alsa-project.org Signed-off-by: Rob Herring <robh(a)kernel.org> --- I can take this as I have a few other things for -rc2. Documentation/devicetree/bindings/sound/renesas,rsnd.yaml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml b/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml index ee936d1aa724..c2930d65728e 100644 --- a/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml +++ b/Documentation/devicetree/bindings/sound/renesas,rsnd.yaml @@ -114,7 +114,7 @@ properties: ports: $ref: /schemas/graph.yaml#/properties/ports - properties: + patternProperties: port(@[0-9a-f]+)?: $ref: audio-graph-port.yaml# unevaluatedProperties: false -- 2.27.0

2 1

[PATCH v2 0/4] bus: Make remove callback return void
by Uwe Kleine-König 15 Jul '21

15 Jul '21

Hello, compared to (implicit) v1 that I sent earlier today (https://lore.kernel.org/r/20210706095037.1425211-1-u.kleine-koenig@pengutro…) the following is changed: - Add three more patches preparing some s390 specific busses and adapt them in the last patch. Thanks to Cornelia Huck for pointing this out. - Add various Acks to the last patch I now tested allmodconfig on arm, powerpc, s390 and amd64. As before this depends on "PCI: endpoint: Make struct pci_epf_driver::remove return void" that is not yet applied, see https://lore.kernel.org/r/20210223090757.57604-1-u.kleine-koenig@pengutroni…. Best regards Uwe Uwe Kleine-König (4): s390/cio: Make struct css_driver::remove return void s390/ccwgroup: Drop if with an always false condition s390/scm: Make struct scm_driver::remove return void bus: Make remove callback return void arch/arm/common/locomo.c | 3 +-- arch/arm/common/sa1111.c | 4 +--- arch/arm/mach-rpc/ecard.c | 4 +--- arch/mips/sgi-ip22/ip22-gio.c | 3 +-- arch/parisc/kernel/drivers.c | 5 ++--- arch/powerpc/platforms/ps3/system-bus.c | 3 +-- arch/powerpc/platforms/pseries/ibmebus.c | 3 +-- arch/powerpc/platforms/pseries/vio.c | 3 +-- arch/s390/include/asm/eadm.h | 2 +- drivers/acpi/bus.c | 3 +-- drivers/amba/bus.c | 4 +--- drivers/base/auxiliary.c | 4 +--- drivers/base/isa.c | 4 +--- drivers/base/platform.c | 4 +--- drivers/bcma/main.c | 6 ++---- drivers/bus/sunxi-rsb.c | 4 +--- drivers/cxl/core.c | 3 +-- drivers/dax/bus.c | 4 +--- drivers/dma/idxd/sysfs.c | 4 +--- drivers/firewire/core-device.c | 4 +--- drivers/firmware/arm_scmi/bus.c | 4 +--- drivers/firmware/google/coreboot_table.c | 4 +--- drivers/fpga/dfl.c | 4 +--- drivers/hid/hid-core.c | 4 +--- drivers/hid/intel-ish-hid/ishtp/bus.c | 4 +--- drivers/hv/vmbus_drv.c | 5 +---- drivers/hwtracing/intel_th/core.c | 4 +--- drivers/i2c/i2c-core-base.c | 5 +---- drivers/i3c/master.c | 4 +--- drivers/input/gameport/gameport.c | 3 +-- drivers/input/serio/serio.c | 3 +-- drivers/ipack/ipack.c | 4 +--- drivers/macintosh/macio_asic.c | 4 +--- drivers/mcb/mcb-core.c | 4 +--- drivers/media/pci/bt8xx/bttv-gpio.c | 3 +-- drivers/memstick/core/memstick.c | 3 +-- drivers/mfd/mcp-core.c | 3 +-- drivers/misc/mei/bus.c | 4 +--- drivers/misc/tifm_core.c | 3 +-- drivers/mmc/core/bus.c | 4 +--- drivers/mmc/core/sdio_bus.c | 4 +--- drivers/net/netdevsim/bus.c | 3 +-- drivers/ntb/core.c | 4 +--- drivers/ntb/ntb_transport.c | 4 +--- drivers/nvdimm/bus.c | 3 +-- drivers/pci/endpoint/pci-epf-core.c | 4 +--- drivers/pci/pci-driver.c | 3 +-- drivers/pcmcia/ds.c | 4 +--- drivers/platform/surface/aggregator/bus.c | 4 +--- drivers/platform/x86/wmi.c | 4 +--- drivers/pnp/driver.c | 3 +-- drivers/rapidio/rio-driver.c | 4 +--- drivers/rpmsg/rpmsg_core.c | 4 +--- drivers/s390/block/scm_drv.c | 4 +--- drivers/s390/cio/ccwgroup.c | 6 +----- drivers/s390/cio/chsc_sch.c | 3 +-- drivers/s390/cio/css.c | 7 +++---- drivers/s390/cio/css.h | 2 +- drivers/s390/cio/device.c | 9 +++------ drivers/s390/cio/eadm_sch.c | 4 +--- drivers/s390/cio/scm.c | 5 +++-- drivers/s390/cio/vfio_ccw_drv.c | 3 +-- drivers/s390/crypto/ap_bus.c | 4 +--- drivers/scsi/scsi_debug.c | 3 +-- drivers/siox/siox-core.c | 4 +--- drivers/slimbus/core.c | 4 +--- drivers/soc/qcom/apr.c | 4 +--- drivers/spi/spi.c | 4 +--- drivers/spmi/spmi.c | 3 +-- drivers/ssb/main.c | 4 +--- drivers/staging/fieldbus/anybuss/host.c | 4 +--- drivers/staging/greybus/gbphy.c | 4 +--- drivers/target/loopback/tcm_loop.c | 5 ++--- drivers/thunderbolt/domain.c | 4 +--- drivers/tty/serdev/core.c | 4 +--- drivers/usb/common/ulpi.c | 4 +--- drivers/usb/serial/bus.c | 4 +--- drivers/usb/typec/bus.c | 4 +--- drivers/vdpa/vdpa.c | 4 +--- drivers/vfio/mdev/mdev_driver.c | 4 +--- drivers/virtio/virtio.c | 3 +-- drivers/vme/vme.c | 4 +--- drivers/xen/xenbus/xenbus.h | 2 +- drivers/xen/xenbus/xenbus_probe.c | 4 +--- include/linux/device/bus.h | 2 +- sound/aoa/soundbus/core.c | 4 +--- 86 files changed, 95 insertions(+), 236 deletions(-) base-commit: 79160a603bdb51916226caf4a6616cc4e1c58a58 prerequisite-patch-id: e5c7b97ea399fddc2695e8cf5d0c02d14175abac -- 2.30.2

11 15

Issues using simple-audio-card driver with Xilinx Audio Formatter
by Robert Hancock 15 Jul '21

15 Jul '21

I'm working with a Xilinx UltraScale+ MPSoC platform and trying to get some drivers working for the Xilinx Audio Formatter, I2S Transmitter and I2S Receiver FPGA logic cores. The Audio Formatter is what handles audio DMA and the I2S Transmitter/Receiver handle converting between an AXI stream and I2S. Right now as a prototype, I just have the I2S Transmitter looped back directly to the I2S Receiver and both of them connected to the Audio Formatter, with the idea that audio played back can be immediately recorded in again. The drivers for these cores are in mainline (sound/soc/xilinx/xlnx_i2s.c and sound/soc/xilinx/xlnx_formatter_pcm.c), but it's the next step of putting them together into a functioning audio device which I am having trouble with. It seems the usual way one would do this is using the simple-audio-card driver and adding some device tree entries to hook everything up. In this case there is no real "codec" so I'm using the SPDIF transmitter and receiver codecs for this - the device tree entries for the simple-audio-card I have look like this: /* Use S/PDIF transmitter as codec required by simple-audio-card */ playback_codec: playback-codec { compatible = "linux,spdif-dit"; #sound-dai-cells = <0>; }; /* Use S/PDIF receiver as codec required by simple-audio-card */ record_codec: record-codec { compatible = "linux,spdif-dir"; #sound-dai-cells = <0>; }; irxs-audio { compatible = "simple-audio-card"; simple-audio-card,name = "IRXS-Audio"; #address-cells = <1>; #size-cells = <0>; playback_link: simple-audio-card,dai-link@0 { reg = <0>; format = "i2s"; bitclock-master = <&p_codec_dai>; frame-master = <&p_codec_dai>; p_cpu_dai: cpu { sound-dai = <&test_audio_i2s_transmitter_0>; }; p_platform_dai: plat { sound-dai = <&test_audio_audio_formatter_0>; }; p_codec_dai: codec { sound-dai = <&playback_codec>; clocks = <&misc_clk_4>; }; }; record_link: simple-audio-card,dai-link@1 { reg = <1>; format = "i2s"; bitclock-master = <&r_codec_dai>; frame-master = <&r_codec_dai>; r_cpu_dai: cpu { sound-dai = <&test_audio_i2s_receiver_0>; }; r_platform_dai: plat { sound-dai = <&test_audio_audio_formatter_0>; }; r_codec_dai: codec { sound-dai = <&record_codec>; clocks = <&misc_clk_4>; }; }; }; I _think_ this should be a reasonable setup as far as I can tell? However, testing this out just results in: asoc-simple-card irxs-audio: parse error -22 asoc-simple-card: probe of irxs-audio failed with error -22 After adding in a bunch of debug output, it seems that the issue is that through this sequence of calls: asoc_simple_probe simple_parse_of simple_for_each_link simple_dai_link_of asoc_simple_parse_platform (aka asoc_simple_parse_dai) snd_soc_of_get_dai_name snd_soc_get_dai_name Inside snd_soc_get_dai_name, snd_soc_component_of_xlate_dai_name is called and returns -ENOTSUPP, so we fall into the if block and end up failing out here: if (id < 0 || id >= pos->num_dai) { ret = -EINVAL; continue; } That, in turn, seems to be because the Audio Formatter driver doesn't register any DAIs in its call to devm_snd_soc_register_component in xlnx_formatter_pcm_probe. I'm a bit unsure whether that is supposed to be the case, or if not, what should be done to fix it. Can anyone provide some advice? My tests are on kernel 5.10.45, but there's been no changes in the Xilinx ASoC drivers since then, and I'm not sure anything relevant to this has changed in the rest of ASoC either. -- Robert Hancock Senior Hardware Designer, Calian Advanced Technologies www.calian.com

3 10

[PATCH 0/2] ALSA: compress: Cleanup and a potential fix
by Takashi Iwai 15 Jul '21

15 Jul '21

Hi, this series contains a couple of patches for compress-offload API, one for a cleanup of unused API functions and another for the proper mutex initialization. I stumbled on the second while doing the first. Takashi === Takashi Iwai (2): ALSA: compress: Drop unused functions ALSA: compress: Initialize mutex in snd_compress_new() include/sound/compress_driver.h | 2 - sound/core/compress_offload.c | 69 +-------------------------------- sound/soc/soc-compress.c | 1 - 3 files changed, 1 insertion(+), 71 deletions(-) -- 2.26.2

6 9

[PATCH v6 2/2] ASoC: sun50i-dmic: dt-bindings: add DT bindings for DMIC controller
by fengzheng923＠gmail.com 15 Jul '21

15 Jul '21

From: Ban Tao <fengzheng923(a)gmail.com> DT binding documentation for this new ASoC driver. Signed-off-by: Ban Tao <fengzheng923(a)gmail.com> Reviewed-by: Rob Herring <robh(a)kernel.org> --- v1->v2: 1.Fix some build errors. --- v2->v3: 1.Fix some build errors. --- v3->v4: 1.None. --- v4->v5: 1.Add interrupt. 2.Keep clock and reset index. --- v5->v6: 1.None. --- .../sound/allwinner,sun50i-h6-dmic.yaml | 79 +++++++++++++++++++ 1 file changed, 79 insertions(+) create mode 100644 Documentation/devicetree/bindings/sound/allwinner,sun50i-h6-dmic.yaml diff --git a/Documentation/devicetree/bindings/sound/allwinner,sun50i-h6-dmic.yaml b/Documentation/devicetree/bindings/sound/allwinner,sun50i-h6-dmic.yaml new file mode 100644 index 000000000000..0cfc07f369bd --- /dev/null +++ b/Documentation/devicetree/bindings/sound/allwinner,sun50i-h6-dmic.yaml @@ -0,0 +1,79 @@ +# SPDX-License-Identifier: (GPL-2.0+ OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/allwinner,sun50i-h6-dmic.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Allwinner H6 DMIC Device Tree Bindings + +maintainers: + - Ban Tao <fengzheng923(a)gmail.com> + +properties: + "#sound-dai-cells": + const: 0 + + compatible: + const: allwinner,sun50i-h6-dmic + + reg: + maxItems: 1 + + interrupts: + maxItems: 1 + + clocks: + items: + - description: Bus Clock + - description: Module Clock + + clock-names: + items: + - const: bus + - const: mod + + dmas: + items: + - description: RX DMA Channel + + dma-names: + items: + - const: rx + + resets: + maxItems: 1 + +required: + - "#sound-dai-cells" + - compatible + - reg + - interrupts + - clocks + - clock-names + - dmas + - dma-names + - resets + +additionalProperties: false + +examples: + - | + #include <dt-bindings/interrupt-controller/arm-gic.h> + #include <dt-bindings/interrupt-controller/irq.h> + + #include <dt-bindings/clock/sun50i-h6-ccu.h> + #include <dt-bindings/reset/sun50i-h6-ccu.h> + + dmic: dmic@5095000 { + #sound-dai-cells = <0>; + compatible = "allwinner,sun50i-h6-dmic"; + reg = <0x05095000 0x400>; + interrupts = <GIC_SPI 22 IRQ_TYPE_LEVEL_HIGH>; + clocks = <&ccu CLK_BUS_DMIC>, <&ccu CLK_DMIC>; + clock-names = "bus", "mod"; + dmas = <&dma 7>; + dma-names = "rx"; + resets = <&ccu RST_BUS_DMIC>; + }; + +... -- 2.17.1

2 1

Added -T (timestamp) for --dump.
by GitHub pull_request - opened 15 Jul '21

15 Jul '21

alsa-project/alsa-utils pull request #104 was opened from folkertvanheusden: amidi could already trace/dump MIDI traffic (using --dump). This patch adds a timestamp to that tracing. Request URL : https://github.com/alsa-project/alsa-utils/pull/104 Patch URL : https://github.com/alsa-project/alsa-utils/pull/104.patch Repository URL: https://github.com/alsa-project/alsa-utils

1 0

[PATCH] sound: usb: line6: free allocated urbs on failure
by Salah Triki 15 Jul '21

15 Jul '21

Free allocated urbs on failure in order to prevent memory leaks. Signed-off-by: Salah Triki <salah.triki(a)gmail.com> --- sound/usb/line6/capture.c | 22 ++++++++++++++++++---- 1 file changed, 18 insertions(+), 4 deletions(-) diff --git a/sound/usb/line6/capture.c b/sound/usb/line6/capture.c index 970c9bdce0b2..345b75ede5d5 100644 --- a/sound/usb/line6/capture.c +++ b/sound/usb/line6/capture.c @@ -258,6 +258,7 @@ int line6_create_audio_in_urbs(struct snd_line6_pcm *line6pcm) { struct usb_line6 *line6 = line6pcm->line6; int i; + int ret; line6pcm->in.urbs = kcalloc(line6->iso_buffers, sizeof(struct urb *), GFP_KERNEL); @@ -272,8 +273,10 @@ int line6_create_audio_in_urbs(struct snd_line6_pcm *line6pcm) urb = line6pcm->in.urbs[i] = usb_alloc_urb(LINE6_ISO_PACKETS, GFP_KERNEL); - if (urb == NULL) - return -ENOMEM; + if (urb == NULL) { + ret = -ENOMEM; + goto enomem; + } urb->dev = line6->usbdev; urb->pipe = @@ -286,9 +289,20 @@ int line6_create_audio_in_urbs(struct snd_line6_pcm *line6pcm) urb->interval = LINE6_ISO_INTERVAL; urb->error_count = 0; urb->complete = audio_in_callback; - if (usb_urb_ep_type_check(urb)) - return -EINVAL; + if (usb_urb_ep_type_check(urb)) { + ret = -EINVAL; + goto einval; + } } return 0; + +enomem: + i--; + +einval: + while (i >= 0) + usb_free_urb(line6pcm->in.urbs[i--]); + + return ret; } -- 2.25.1

2 1

How can turn on auto-mute mode in alsa ?
by GitHub issues - edited 15 Jul '21

15 Jul '21

alsa-project/alsa-lib issue #164 was edited from yufeiluo: My alsa-utils version: aplay --version aplay: version 1.1.8 by Jaroslav Kysela <perex(a)perex.cz> No auto-mute option in alsamixer gui menu. [https://www.dropbox.com/s/ie6meqto1t1rv9g/alsamixer.png?dl=0](url) debian@debian:~$ amixer -c 0 sset 'Auto-Mute Mode' Enabled amixer: Unable to find simple control 'Auto-Mute Mode',0 Issue URL : https://github.com/alsa-project/alsa-lib/issues/164 Repository URL: https://github.com/alsa-project/alsa-lib

1 0