November 2022 - Alsa-devel - mailman.alsa-project.org

Re: RFC: usb: gadget: u_audio: Notifying gadget that host started playback/capture?
by Pavel Hofman 30 Oct '23

30 Oct '23

Hi, Dne 08. 09. 21 v 10:21 Pavel Hofman napsal(a): > Hi, > > The current audio gadget has no way to inform the gadget side that the > host side has started playback/capture and that gadget-side alsa > processes should be started. > > Playback/capture processes on the host side do not get stuck without the > gadget side consuming/producing data (OUT requests are ignored in > u_audio_iso_complete, IN ones send initial zeros in their req->buf). > > However, playback/capture processes on the gadget side get stuck without > the host side sending playback OUT packets or capture IN requests and > time out with error. If there was a way to inform the gadget side that > playback/capture has started on the host side, the gadget clients could > react accordingly. > I drafted a simple patch for u_audio.c which defines read-only boolean ctl elems "Capture Requested" and "Playback Requested". Their values are set/reset in methods u_audio_start_capture/playback and u_audio_stop_capture/playback, i.e. at changes of respective altsettings from 0 to 1 and back. Every ctl elem value change sends notification via snd_ctl_notify. The principle works OK for capture/playback start/stop on the host, as monitored by alsactl: pi@raspberrypi:~ $ alsactl monitor hw:UAC2Gadget node hw:UAC2Gadget, #4 (3,0,0,Capture Requested,0) VALUE node hw:UAC2Gadget, #4 (3,0,0,Capture Requested,0) VALUE node hw:UAC2Gadget, #3 (3,0,0,Playback Requested,0) VALUE node hw:UAC2Gadget, #3 (3,0,0,Playback Requested,0) VALUE However at enumeration the USB host switches both playback and capture altsettings repeatedly, generating "fake" events from the gadget side POW. The host even sends regular-sized EP-OUT packets filled with zeros during enumeration (tested on linux only for now). Please is there any way to "detect" the enumeration stage to mask out the "fake" playback/capture start/stop events? The attached patch does not apply cleanly to mainline u_audio.c because it's rebased on other patches not submitted yet but it's only a discussion inducer for now. Thanks a lot, Pavel.

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[alsa-devel] echo-cancellation plugin advice?
by Max Klein 27 Oct '23

27 Oct '23

> Well, asym wouldn't be the answer. Basically you'll need to open two > slave PCMs in one plugin. So, it's no simple filter-type plugin. > It's doable, but not easy as it sounds, I guess. Takashi, can you please further explain why asym is not the solution and what you see as a problem? I am also trying to figure out if it would be possible to create such a plugin for ALSA? I am still searching for some good starting points on how to write an ALSA plugin... Jean-Marc Valin (http://lists.linuxaudio.org/pipermail/linux-audio-dev/2005-June/012454.html) already released his work as part of speex but as far I know there is no plugin that has been made out of it? Thanks for any hint! -- NEU: FreePhone 3-fach-Flat mit kostenlosem Smartphone! Jetzt informieren: http://mobile.1und1.de/?ac=OM.PW.PW003K20328T7073a

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[PATCH] ASoC: fsl_sai: Enable MCTL_MCLK_EN bit for master mode
by Shengjiu Wang 07 Jul '23

07 Jul '23

On i.MX8MM, the MCTL_MCLK_EN bit it is not only the gate for MCLK output to PAD, but also the gate bit between root clock and SAI module, So it is need to be enabled for master mode, otherwise there is no bclk generated. Signed-off-by: Shengjiu Wang <shengjiu.wang(a)nxp.com> --- sound/soc/fsl/fsl_sai.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/sound/soc/fsl/fsl_sai.c b/sound/soc/fsl/fsl_sai.c index fa950dde5310..dae16a14f177 100644 --- a/sound/soc/fsl/fsl_sai.c +++ b/sound/soc/fsl/fsl_sai.c @@ -437,6 +437,12 @@ static int fsl_sai_set_bclk(struct snd_soc_dai *dai, bool tx, u32 freq) FSL_SAI_CR2_DIV_MASK | FSL_SAI_CR2_BYP, savediv / 2 - 1); + if (sai->soc_data->max_register >= FSL_SAI_MCTL) { + /* SAI is in master mode at this point, so enable MCLK */ + regmap_update_bits(sai->regmap, FSL_SAI_MCTL, + FSL_SAI_MCTL_MCLK_EN, FSL_SAI_MCTL_MCLK_EN); + } + return 0; } -- 2.17.1

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[PATCH 1/2] ASoC: fsl-asoc-card: add nau8822 support
by Hui Wang 23 Jun '23

23 Jun '23

This is for an imx6sx EVB which has a nau8822 codec connects to the SSI2 interface, so add the nau8822 support in this machine driver. Because the codec driver nau8822.c doesn't handle mclk enabling, here adding a codec_priv->mclk for nau8822 and similar codecs which need to enable the mclk in the machine driver, and enable the mclk in the card_late_probe() conditionally. Signed-off-by: Hui Wang <hui.wang(a)canonical.com> --- sound/soc/fsl/fsl-asoc-card.c | 14 ++++++++++++++ 1 file changed, 14 insertions(+) diff --git a/sound/soc/fsl/fsl-asoc-card.c b/sound/soc/fsl/fsl-asoc-card.c index d9a0d4768c4d..89504865cb1d 100644 --- a/sound/soc/fsl/fsl-asoc-card.c +++ b/sound/soc/fsl/fsl-asoc-card.c @@ -27,6 +27,7 @@ #include "../codecs/wm8960.h" #include "../codecs/wm8994.h" #include "../codecs/tlv320aic31xx.h" +#include "../codecs/nau8822.h" #define CS427x_SYSCLK_MCLK 0 @@ -45,6 +46,7 @@ * @pll_id: PLL id for set_pll() */ struct codec_priv { + struct clk *mclk; unsigned long mclk_freq; unsigned long free_freq; u32 mclk_id; @@ -522,6 +524,9 @@ static int fsl_asoc_card_late_probe(struct snd_soc_card *card) return ret; } + if (!IS_ERR_OR_NULL(codec_priv->mclk)) + clk_prepare_enable(codec_priv->mclk); + return 0; } @@ -682,6 +687,14 @@ static int fsl_asoc_card_probe(struct platform_device *pdev) priv->codec_priv.free_freq = priv->codec_priv.mclk_freq; priv->card.dapm_routes = NULL; priv->card.num_dapm_routes = 0; + } else if (of_device_is_compatible(np, "fsl,imx-audio-nau8822")) { + codec_dai_name = "nau8822-hifi"; + priv->codec_priv.mclk_id = NAU8822_CLK_MCLK; + priv->codec_priv.fll_id = NAU8822_CLK_PLL; + priv->codec_priv.pll_id = NAU8822_CLK_PLL; + priv->dai_fmt |= SND_SOC_DAIFMT_CBM_CFM; + if (codec_dev) + priv->codec_priv.mclk = devm_clk_get(codec_dev, NULL); } else { dev_err(&pdev->dev, "unknown Device Tree compatible\n"); ret = -EINVAL; @@ -907,6 +920,7 @@ static const struct of_device_id fsl_asoc_card_dt_ids[] = { { .compatible = "fsl,imx-audio-wm8524", }, { .compatible = "fsl,imx-audio-si476x", }, { .compatible = "fsl,imx-audio-wm8958", }, + { .compatible = "fsl,imx-audio-nau8822", }, {} }; MODULE_DEVICE_TABLE(of, fsl_asoc_card_dt_ids); -- 2.25.1

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[PATCH v2 00/65] clk: Make determine_rate mandatory for muxes
by Maxime Ripard 05 Apr '23

05 Apr '23

Hi, This is a follow-up to a previous series that was printing a warning when a mux has a set_parent implementation but is missing determine_rate(). The rationale is that set_parent() is very likely to be useful when changing the rate, but it's determine_rate() that takes the parenting decision. If we're missing it, then the current parent is always going to be used, and thus set_parent() will not be used. The only exception being a direct call to clk_set_parent(), but those are fairly rare compared to clk_set_rate(). Stephen then asked to promote the warning to an error, and to fix up all the muxes that are in that situation first. So here it is :) Let me know what you think, Maxime To: Michael Turquette <mturquette(a)baylibre.com> To: Stephen Boyd <sboyd(a)kernel.org> To: Andreas Färber <afaerber(a)suse.de> To: Manivannan Sadhasivam <mani(a)kernel.org> To: Nicolas Ferre <nicolas.ferre(a)microchip.com> To: Alexandre Belloni <alexandre.belloni(a)bootlin.com> To: Claudiu Beznea <claudiu.beznea(a)microchip.com> To: Max Filippov <jcmvbkbc(a)gmail.com> To: Charles Keepax <ckeepax(a)opensource.cirrus.com> To: Richard Fitzgerald <rf(a)opensource.cirrus.com> To: Maxime Coquelin <mcoquelin.stm32(a)gmail.com> To: Alexandre Torgue <alexandre.torgue(a)foss.st.com> To: Luca Ceresoli <luca.ceresoli(a)bootlin.com> To: David Lechner <david(a)lechnology.com> To: Sekhar Nori <nsekhar(a)ti.com> To: Abel Vesa <abelvesa(a)kernel.org> To: Shawn Guo <shawnguo(a)kernel.org> To: Sascha Hauer <s.hauer(a)pengutronix.de> To: Pengutronix Kernel Team <kernel(a)pengutronix.de> To: Fabio Estevam <festevam(a)gmail.com> To: NXP Linux Team <linux-imx(a)nxp.com> To: Matthias Brugger <matthias.bgg(a)gmail.com> To: Geert Uytterhoeven <geert+renesas(a)glider.be> To: Dinh Nguyen <dinguyen(a)kernel.org> To: Peter De Schrijver <pdeschrijver(a)nvidia.com> To: Prashant Gaikwad <pgaikwad(a)nvidia.com> To: Thierry Reding <thierry.reding(a)gmail.com> To: Jonathan Hunter <jonathanh(a)nvidia.com> To: Ulf Hansson <ulf.hansson(a)linaro.org> To: Linus Walleij <linus.walleij(a)linaro.org> To: David Airlie <airlied(a)gmail.com> To: Daniel Vetter <daniel(a)ffwll.ch> To: Vinod Koul <vkoul(a)kernel.org> To: Kishon Vijay Abraham I <kishon(a)kernel.org> To: Alessandro Zummo <a.zummo(a)towertech.it> To: Chen-Yu Tsai <wens(a)csie.org> To: Jernej Skrabec <jernej.skrabec(a)gmail.com> To: Samuel Holland <samuel(a)sholland.org> To: Liam Girdwood <lgirdwood(a)gmail.com> To: Mark Brown <broonie(a)kernel.org> To: Jaroslav Kysela <perex(a)perex.cz> To: Takashi Iwai <tiwai(a)suse.com> To: Paul Cercueil <paul(a)crapouillou.net> To: Orson Zhai <orsonzhai(a)gmail.com> To: Baolin Wang <baolin.wang(a)linux.alibaba.com> To: Chunyan Zhang <zhang.lyra(a)gmail.com> Cc: linux-clk(a)vger.kernel.org Cc: linux-kernel(a)vger.kernel.org Cc: AngeloGioacchino Del Regno <angelogioacchino.delregno(a)collabora.com> Cc: linux-arm-kernel(a)lists.infradead.org Cc: linux-actions(a)lists.infradead.org Cc: patches(a)opensource.cirrus.com Cc: linux-stm32(a)st-md-mailman.stormreply.com Cc: linux-mediatek(a)lists.infradead.org Cc: linux-renesas-soc(a)vger.kernel.org Cc: linux-tegra(a)vger.kernel.org Cc: dri-devel(a)lists.freedesktop.org Cc: linux-phy(a)lists.infradead.org Cc: linux-rtc(a)vger.kernel.org Cc: linux-sunxi(a)lists.linux.dev Cc: alsa-devel(a)alsa-project.org Cc: linux-mips(a)vger.kernel.org Signed-off-by: Maxime Ripard <maxime(a)cerno.tech> --- Changes in v2: - Drop all the patches already applied - Promote the clk registration warning to an error - Make all muxes use determine_rate - Link to v1: https://lore.kernel.org/r/20221018-clk-range-checks-fixes-v1-0-f3ef80518140… --- Maxime Ripard (65): clk: Export clk_hw_forward_rate_request() clk: lan966x: Remove unused round_rate hook clk: nodrv: Add a determine_rate hook clk: test: Add a determine_rate hook clk: actions: composite: Add a determine_rate hook for pass clk clk: at91: main: Add a determine_rate hook clk: at91: sckc: Add a determine_rate hook clk: berlin: div: Add a determine_rate hook clk: cdce706: Add a determine_rate hook clk: k210: pll: Add a determine_rate hook clk: k210: aclk: Add a determine_rate hook clk: k210: mux: Add a determine_rate hook clk: lmk04832: clkout: Add a determine_rate hook clk: lochnagar: Add a determine_rate hook clk: qoriq: Add a determine_rate hook clk: si5341: Add a determine_rate hook clk: stm32f4: mux: Add a determine_rate hook clk: vc5: mux: Add a determine_rate hook clk: vc5: clkout: Add a determine_rate hook clk: wm831x: clkout: Add a determine_rate hook clk: davinci: da8xx-cfgchip: Add a determine_rate hook clk: davinci: da8xx-cfgchip: Add a determine_rate hook clk: imx: busy: Add a determine_rate hook clk: imx: fixup-mux: Add a determine_rate hook clk: imx: scu: Add a determine_rate hook clk: mediatek: cpumux: Add a determine_rate hook clk: pxa: Add a determine_rate hook clk: renesas: r9a06g032: Add a determine_rate hook clk: socfpga: gate: Add a determine_rate hook clk: stm32: core: Add a determine_rate hook clk: tegra: bpmp: Add a determine_rate hook clk: tegra: super: Add a determine_rate hook clk: tegra: periph: Add a determine_rate hook clk: ux500: prcmu: Add a determine_rate hook clk: ux500: sysctrl: Add a determine_rate hook clk: versatile: sp810: Add a determine_rate hook drm/tegra: sor: Add a determine_rate hook phy: cadence: sierra: Add a determine_rate hook phy: cadence: torrent: Add a determine_rate hook phy: ti: am654-serdes: Add a determine_rate hook phy: ti: j721e-wiz: Add a determine_rate hook rtc: sun6i: Add a determine_rate hook ASoC: tlv320aic32x4: Add a determine_rate hook clk: actions: composite: div: Switch to determine_rate clk: actions: composite: fact: Switch to determine_rate clk: at91: smd: Switch to determine_rate clk: axi-clkgen: Switch to determine_rate clk: cdce706: divider: Switch to determine_rate clk: cdce706: clkout: Switch to determine_rate clk: si5341: Switch to determine_rate clk: si5351: pll: Switch to determine_rate clk: si5351: msynth: Switch to determine_rate clk: si5351: clkout: Switch to determine_rate clk: da8xx: clk48: Switch to determine_rate clk: imx: scu: Switch to determine_rate clk: ingenic: cgu: Switch to determine_rate clk: ingenic: tcu: Switch to determine_rate clk: sprd: composite: Switch to determine_rate clk: st: flexgen: Switch to determine_rate clk: stm32: composite: Switch to determine_rate clk: tegra: periph: Switch to determine_rate clk: tegra: super: Switch to determine_rate ASoC: tlv320aic32x4: pll: Switch to determine_rate ASoC: tlv320aic32x4: div: Switch to determine_rate clk: Warn if we register a mux without determine_rate drivers/clk/actions/owl-composite.c | 35 +++++++++++----- drivers/clk/actions/owl-composite.h | 2 +- drivers/clk/at91/clk-main.c | 3 +- drivers/clk/at91/clk-smd.c | 29 +++++++------ drivers/clk/at91/sckc.c | 3 +- drivers/clk/berlin/berlin2-div.c | 3 +- drivers/clk/clk-axi-clkgen.c | 14 ++++--- drivers/clk/clk-cdce706.c | 31 ++++++++------ drivers/clk/clk-k210.c | 17 +++++--- drivers/clk/clk-lan966x.c | 17 -------- drivers/clk/clk-lmk04832.c | 1 + drivers/clk/clk-lochnagar.c | 2 + drivers/clk/clk-qoriq.c | 10 +++-- drivers/clk/clk-si5341.c | 21 +++++----- drivers/clk/clk-si5351.c | 67 +++++++++++++++++-------------- drivers/clk/clk-stm32f4.c | 3 +- drivers/clk/clk-versaclock5.c | 8 ++-- drivers/clk/clk-wm831x.c | 3 +- drivers/clk/clk.c | 15 +++++++ drivers/clk/clk_test.c | 1 + drivers/clk/davinci/da8xx-cfgchip.c | 15 ++++--- drivers/clk/imx/clk-busy.c | 3 +- drivers/clk/imx/clk-fixup-mux.c | 3 +- drivers/clk/imx/clk-scu.c | 27 +++++++++++-- drivers/clk/ingenic/cgu.c | 15 +++---- drivers/clk/ingenic/tcu.c | 19 +++++---- drivers/clk/mediatek/clk-cpumux.c | 3 +- drivers/clk/pxa/clk-pxa.c | 3 +- drivers/clk/renesas/r9a06g032-clocks.c | 3 +- drivers/clk/socfpga/clk-gate.c | 3 +- drivers/clk/sprd/composite.c | 16 +++++--- drivers/clk/st/clk-flexgen.c | 15 +++---- drivers/clk/stm32/clk-stm32-core.c | 32 ++++++++++----- drivers/clk/tegra/clk-bpmp.c | 7 +++- drivers/clk/tegra/clk-periph.c | 19 ++++++--- drivers/clk/tegra/clk-super.c | 18 ++++++--- drivers/clk/ux500/clk-prcmu.c | 3 +- drivers/clk/ux500/clk-sysctrl.c | 4 +- drivers/clk/versatile/clk-sp810.c | 3 +- drivers/gpu/drm/tegra/sor.c | 3 +- drivers/phy/cadence/phy-cadence-sierra.c | 1 + drivers/phy/cadence/phy-cadence-torrent.c | 1 + drivers/phy/ti/phy-am654-serdes.c | 1 + drivers/phy/ti/phy-j721e-wiz.c | 1 + drivers/rtc/rtc-sun6i.c | 2 + sound/soc/codecs/tlv320aic32x4-clk.c | 37 ++++++++++------- 46 files changed, 343 insertions(+), 199 deletions(-) --- base-commit: 61c3426aca2c71052ddcd06c32e29d92304990fd change-id: 20221018-clk-range-checks-fixes-2039f3523240 Best regards, -- Maxime Ripard <maxime(a)cerno.tech>

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Re: [PATCH] kernel/drivers: Remove redundant driver match function
by Uwe Kleine-König 19 Mar '23

19 Mar '23

Hello, On Thu, May 05, 2022 at 09:59:52PM -0700, lizhe wrote: > If there is no driver match function, the driver core assumes that each > candidate pair (driver, device) matches, see driver_match_device(). I wonder who is supposed to apply this patch. Either it should be split by file and go in via the respective maintainers, or it goes in via Greg's tree? I added Greg to To: for him to chime in. Best regards Uwe > Signed-off-by: lizhe <sensor1010(a)163.com> > --- > drivers/mfd/mcp-core.c | 6 ------ > drivers/nubus/bus.c | 6 ------ > drivers/s390/crypto/vfio_ap_drv.c | 6 ------ > drivers/scsi/scsi_debug.c | 7 ------- > drivers/target/loopback/tcm_loop.c | 7 ------- > drivers/w1/w1.c | 6 ------ > sound/ac97_bus.c | 11 ----------- > 7 files changed, 49 deletions(-) > > diff --git a/drivers/mfd/mcp-core.c b/drivers/mfd/mcp-core.c > index 2fa592c37c6f..281a9369f2b3 100644 > --- a/drivers/mfd/mcp-core.c > +++ b/drivers/mfd/mcp-core.c > @@ -20,11 +20,6 @@ > #define to_mcp(d) container_of(d, struct mcp, attached_device) > #define to_mcp_driver(d) container_of(d, struct mcp_driver, drv) > > -static int mcp_bus_match(struct device *dev, struct device_driver *drv) > -{ > - return 1; > -} > - > static int mcp_bus_probe(struct device *dev) > { > struct mcp *mcp = to_mcp(dev); > @@ -43,7 +38,6 @@ static void mcp_bus_remove(struct device *dev) > > static struct bus_type mcp_bus_type = { > .name = "mcp", > - .match = mcp_bus_match, > .probe = mcp_bus_probe, > .remove = mcp_bus_remove, > }; > diff --git a/drivers/nubus/bus.c b/drivers/nubus/bus.c > index 17fad660032c..72921e4f35f6 100644 > --- a/drivers/nubus/bus.c > +++ b/drivers/nubus/bus.c > @@ -14,11 +14,6 @@ > #define to_nubus_board(d) container_of(d, struct nubus_board, dev) > #define to_nubus_driver(d) container_of(d, struct nubus_driver, driver) > > -static int nubus_bus_match(struct device *dev, struct device_driver *driver) > -{ > - return 1; > -} > - > static int nubus_device_probe(struct device *dev) > { > struct nubus_driver *ndrv = to_nubus_driver(dev->driver); > @@ -39,7 +34,6 @@ static void nubus_device_remove(struct device *dev) > > struct bus_type nubus_bus_type = { > .name = "nubus", > - .match = nubus_bus_match, > .probe = nubus_device_probe, > .remove = nubus_device_remove, > }; > diff --git a/drivers/s390/crypto/vfio_ap_drv.c b/drivers/s390/crypto/vfio_ap_drv.c > index 29ebd54f8919..0a662c451f2a 100644 > --- a/drivers/s390/crypto/vfio_ap_drv.c > +++ b/drivers/s390/crypto/vfio_ap_drv.c > @@ -172,14 +172,8 @@ static void vfio_ap_matrix_dev_release(struct device *dev) > kfree(matrix_dev); > } > > -static int matrix_bus_match(struct device *dev, struct device_driver *drv) > -{ > - return 1; > -} > - > static struct bus_type matrix_bus = { > .name = "matrix", > - .match = &matrix_bus_match, > }; > > static struct device_driver matrix_driver = { > diff --git a/drivers/scsi/scsi_debug.c b/drivers/scsi/scsi_debug.c > index 592a290e6cfa..8107489b36e8 100644 > --- a/drivers/scsi/scsi_debug.c > +++ b/drivers/scsi/scsi_debug.c > @@ -7844,15 +7844,8 @@ static void sdebug_driver_remove(struct device *dev) > scsi_host_put(sdbg_host->shost); > } > > -static int pseudo_lld_bus_match(struct device *dev, > - struct device_driver *dev_driver) > -{ > - return 1; > -} > - > static struct bus_type pseudo_lld_bus = { > .name = "pseudo", > - .match = pseudo_lld_bus_match, > .probe = sdebug_driver_probe, > .remove = sdebug_driver_remove, > .drv_groups = sdebug_drv_groups, > diff --git a/drivers/target/loopback/tcm_loop.c b/drivers/target/loopback/tcm_loop.c > index 4407b56aa6d1..eeb63deff94f 100644 > --- a/drivers/target/loopback/tcm_loop.c > +++ b/drivers/target/loopback/tcm_loop.c > @@ -83,15 +83,8 @@ static int tcm_loop_show_info(struct seq_file *m, struct Scsi_Host *host) > static int tcm_loop_driver_probe(struct device *); > static void tcm_loop_driver_remove(struct device *); > > -static int pseudo_lld_bus_match(struct device *dev, > - struct device_driver *dev_driver) > -{ > - return 1; > -} > - > static struct bus_type tcm_loop_lld_bus = { > .name = "tcm_loop_bus", > - .match = pseudo_lld_bus_match, > .probe = tcm_loop_driver_probe, > .remove = tcm_loop_driver_remove, > }; > diff --git a/drivers/w1/w1.c b/drivers/w1/w1.c > index f2ae2e563dc5..a6ecfa1b3417 100644 > --- a/drivers/w1/w1.c > +++ b/drivers/w1/w1.c > @@ -58,11 +58,6 @@ MODULE_PARM_DESC(slave_ttl, > DEFINE_MUTEX(w1_mlock); > LIST_HEAD(w1_masters); > > -static int w1_master_match(struct device *dev, struct device_driver *drv) > -{ > - return 1; > -} > - > static int w1_master_probe(struct device *dev) > { > return -ENODEV; > @@ -174,7 +169,6 @@ static int w1_uevent(struct device *dev, struct kobj_uevent_env *env); > > static struct bus_type w1_bus_type = { > .name = "w1", > - .match = w1_master_match, > .uevent = w1_uevent, > }; > > diff --git a/sound/ac97_bus.c b/sound/ac97_bus.c > index b4685c53ff11..c7aee8c42c55 100644 > --- a/sound/ac97_bus.c > +++ b/sound/ac97_bus.c > @@ -75,19 +75,8 @@ int snd_ac97_reset(struct snd_ac97 *ac97, bool try_warm, unsigned int id, > } > EXPORT_SYMBOL_GPL(snd_ac97_reset); > > -/* > - * Let drivers decide whether they want to support given codec from their > - * probe method. Drivers have direct access to the struct snd_ac97 > - * structure and may decide based on the id field amongst other things. > - */ > -static int ac97_bus_match(struct device *dev, struct device_driver *drv) > -{ > - return 1; > -} > - > struct bus_type ac97_bus_type = { > .name = "ac97", > - .match = ac97_bus_match, > }; > > static int __init ac97_bus_init(void) > -- > 2.25.1 > > -- Pengutronix e.K. | Uwe Kleine-König | Industrial Linux Solutions | https://www.pengutronix.de/ |

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[PATCH 01/11] ASoC: ak5386: switch to using gpiod API
by Dmitry Torokhov 08 Mar '23

08 Mar '23

Switch the driver from legacy gpio API that is deprecated to the newer gpiod API that respects line polarities described in ACPI/DT. Signed-off-by: Dmitry Torokhov <dmitry.torokhov(a)gmail.com> --- sound/soc/codecs/ak5386.c | 30 ++++++++++++++---------------- 1 file changed, 14 insertions(+), 16 deletions(-) diff --git a/sound/soc/codecs/ak5386.c b/sound/soc/codecs/ak5386.c index 0c5e00679c7d..0562890b5dc7 100644 --- a/sound/soc/codecs/ak5386.c +++ b/sound/soc/codecs/ak5386.c @@ -6,11 +6,12 @@ * (c) 2013 Daniel Mack <zonque(a)gmail.com> */ + +#include <linux/err.h> +#include <linux/gpio/consumer.h> #include <linux/module.h> #include <linux/slab.h> #include <linux/of.h> -#include <linux/of_gpio.h> -#include <linux/of_device.h> #include <linux/regulator/consumer.h> #include <sound/soc.h> #include <sound/pcm.h> @@ -21,7 +22,7 @@ static const char * const supply_names[] = { }; struct ak5386_priv { - int reset_gpio; + struct gpio_desc *reset_gpio; struct regulator_bulk_data supplies[ARRAY_SIZE(supply_names)]; }; @@ -111,8 +112,8 @@ static int ak5386_hw_params(struct snd_pcm_substream *substream, * the AK5386 in power-down mode (PDN pin = “L”). */ - if (gpio_is_valid(priv->reset_gpio)) - gpio_set_value(priv->reset_gpio, 1); + if (priv->reset_gpio) + gpiod_set_value(priv->reset_gpio, 0); return 0; } @@ -123,8 +124,8 @@ static int ak5386_hw_free(struct snd_pcm_substream *substream, struct snd_soc_component *component = dai->component; struct ak5386_priv *priv = snd_soc_component_get_drvdata(component); - if (gpio_is_valid(priv->reset_gpio)) - gpio_set_value(priv->reset_gpio, 0); + if (priv->reset_gpio) + gpiod_set_value(priv->reset_gpio, 1); return 0; } @@ -168,7 +169,6 @@ static int ak5386_probe(struct platform_device *pdev) if (!priv) return -ENOMEM; - priv->reset_gpio = -EINVAL; dev_set_drvdata(dev, priv); for (i = 0; i < ARRAY_SIZE(supply_names); i++) @@ -179,15 +179,13 @@ static int ak5386_probe(struct platform_device *pdev) if (ret < 0) return ret; - if (of_match_device(of_match_ptr(ak5386_dt_ids), dev)) - priv->reset_gpio = of_get_named_gpio(dev->of_node, - "reset-gpio", 0); + priv->reset_gpio = devm_gpiod_get_optional(dev, "reset", + GPIOD_OUT_HIGH); + ret = PTR_ERR_OR_ZERO(priv->reset_gpio); + if (ret) + return ret; - if (gpio_is_valid(priv->reset_gpio)) - if (devm_gpio_request_one(dev, priv->reset_gpio, - GPIOF_OUT_INIT_LOW, - "AK5386 Reset")) - priv->reset_gpio = -EINVAL; + gpiod_set_consumer_name(priv->reset_gpio, "AK5386 Reset"); return devm_snd_soc_register_component(dev, &soc_component_ak5386, &ak5386_dai, 1); -- 2.38.1.431.g37b22c650d-goog

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soundwire: user space test utilities
by Muni Sekhar 06 Mar '23

06 Mar '23

Hi all, I am looking for any existing user space test utilities to test SOUNDWIRE SUBSYSTEM in Linux kernel. Can someone please point me to this. -- Thanks, Sekhar

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[PATCH] ASoC: da7219: Fix pole orientation detection on OMTP headsets when playing music
by David Rau 09 Feb '23

09 Feb '23

The OMTP pin define headsets can be mis-detected as line out instead of OMTP, causing obvious issues with audio quality. This patch is to put increased resistances within the device at a suitable point. To solve this issue better, the new mechanism setup ground switches with conditional delay control and these allow for more stabile detection process to operate as intended. This conditional delay control will not impact the hardware process but use extra system resource. This commit improves control of ground switches in the AAD logic. Signed-off-by: David Rau <david.rau.zg(a)renesas.com> --- sound/soc/codecs/da7219-aad.c | 42 ++++++++++++++++++++++++++++++----- sound/soc/codecs/da7219-aad.h | 1 + 2 files changed, 37 insertions(+), 6 deletions(-) diff --git a/sound/soc/codecs/da7219-aad.c b/sound/soc/codecs/da7219-aad.c index bba73c44c219..08200ec259f9 100644 --- a/sound/soc/codecs/da7219-aad.c +++ b/sound/soc/codecs/da7219-aad.c @@ -352,9 +352,14 @@ static irqreturn_t da7219_aad_irq_thread(int irq, void *data) struct snd_soc_dapm_context *dapm = snd_soc_component_get_dapm(component); struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component); u8 events[DA7219_AAD_IRQ_REG_MAX]; - u8 statusa; + u8 statusa, srm_st; int i, report = 0, mask = 0; + srm_st = snd_soc_component_read(component, DA7219_PLL_SRM_STS) & DA7219_PLL_SRM_STS_MCLK; + msleep(da7219_aad->gnd_switch_delay * ((srm_st == 0x0) ? 2 : 1) - 4); + /* Enable ground switch */ + snd_soc_component_update_bits(component, 0xFB, 0x01, 0x01); + /* Read current IRQ events */ regmap_bulk_read(da7219->regmap, DA7219_ACCDET_IRQ_EVENT_A, events, DA7219_AAD_IRQ_REG_MAX); @@ -454,8 +459,8 @@ static irqreturn_t da7219_aad_irq_thread(int irq, void *data) snd_soc_dapm_disable_pin(dapm, "Mic Bias"); snd_soc_dapm_sync(dapm); - /* Enable ground switch */ - snd_soc_component_update_bits(component, 0xFB, 0x01, 0x01); + /* Disable ground switch */ + snd_soc_component_update_bits(component, 0xFB, 0x01, 0x00); } } @@ -831,6 +836,32 @@ static void da7219_aad_handle_pdata(struct snd_soc_component *component) } } +static void da7219_aad_handle_gnd_switch_time(struct snd_soc_component *component) +{ + struct da7219_priv *da7219 = snd_soc_component_get_drvdata(component); + struct da7219_aad_priv *da7219_aad = da7219->aad; + u8 jack_det; + + jack_det = snd_soc_component_read(component, DA7219_ACCDET_CONFIG_2) + & DA7219_JACK_DETECT_RATE_MASK; + switch (jack_det) { + case 0x00: + da7219_aad->gnd_switch_delay = 32; + break; + case 0x10: + da7219_aad->gnd_switch_delay = 64; + break; + case 0x20: + da7219_aad->gnd_switch_delay = 128; + break; + case 0x30: + da7219_aad->gnd_switch_delay = 256; + break; + default: + da7219_aad->gnd_switch_delay = 32; + break; + } +} /* * Suspend/Resume @@ -908,9 +939,6 @@ int da7219_aad_init(struct snd_soc_component *component) snd_soc_component_update_bits(component, DA7219_ACCDET_CONFIG_1, DA7219_BUTTON_CONFIG_MASK, 0); - /* Enable ground switch */ - snd_soc_component_update_bits(component, 0xFB, 0x01, 0x01); - INIT_WORK(&da7219_aad->btn_det_work, da7219_aad_btn_det_work); INIT_WORK(&da7219_aad->hptest_work, da7219_aad_hptest_work); @@ -928,6 +956,8 @@ int da7219_aad_init(struct snd_soc_component *component) regmap_bulk_write(da7219->regmap, DA7219_ACCDET_IRQ_MASK_A, &mask, DA7219_AAD_IRQ_REG_MAX); + da7219_aad_handle_gnd_switch_time(component); + return 0; } EXPORT_SYMBOL_GPL(da7219_aad_init); diff --git a/sound/soc/codecs/da7219-aad.h b/sound/soc/codecs/da7219-aad.h index f48a12012ef3..21fdf53095cc 100644 --- a/sound/soc/codecs/da7219-aad.h +++ b/sound/soc/codecs/da7219-aad.h @@ -187,6 +187,7 @@ enum da7219_aad_event_regs { struct da7219_aad_priv { struct snd_soc_component *component; int irq; + int gnd_switch_delay; u8 micbias_pulse_lvl; u32 micbias_pulse_time; -- 2.17.1

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[PATCH][next] ASoC: uapi: Replace zero-length arrays with __DECLARE_FLEX_ARRAY() helper
by Gustavo A. R. Silva 03 Feb '23

03 Feb '23

Zero-length arrays are deprecated and we are moving towards adopting C99 flexible-array members, instead. So, replace zero-length arrays declarations in anonymous union with the new __DECLARE_FLEX_ARRAY() helper macro. This helper allows for flexible-array members in unions. Link: https://github.com/KSPP/linux/issues/193 Link: https://github.com/KSPP/linux/issues/227 Link: https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html Signed-off-by: Gustavo A. R. Silva <gustavoars(a)kernel.org> --- include/uapi/sound/asoc.h | 6 +++--- 1 file changed, 3 insertions(+), 3 deletions(-) diff --git a/include/uapi/sound/asoc.h b/include/uapi/sound/asoc.h index 053949287ce8..dd8ad790fc15 100644 --- a/include/uapi/sound/asoc.h +++ b/include/uapi/sound/asoc.h @@ -226,9 +226,9 @@ struct snd_soc_tplg_vendor_array { __le32 type; /* SND_SOC_TPLG_TUPLE_TYPE_ */ __le32 num_elems; /* number of elements in array */ union { - struct snd_soc_tplg_vendor_uuid_elem uuid[0]; - struct snd_soc_tplg_vendor_value_elem value[0]; - struct snd_soc_tplg_vendor_string_elem string[0]; + __DECLARE_FLEX_ARRAY(struct snd_soc_tplg_vendor_uuid_elem, uuid); + __DECLARE_FLEX_ARRAY(struct snd_soc_tplg_vendor_value_elem, value); + __DECLARE_FLEX_ARRAY(struct snd_soc_tplg_vendor_string_elem, string); }; } __attribute__((packed)); -- 2.34.1

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