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[PATCH 00/14] ASoC: Intel: avs: Driver core and PCM operations
by Cezary Rojewski 06 May '22

06 May '22

Part three of main AVS driver series. This series was originally part of the initial series which was later divided [1] into smaller, easier-to-review chunks. Thus, many patches found here were already present on the list. This series consists of code typical to many drivers - PCI driver operations, trace ability, PM operations - as well as PCM handlers for all standard audio interfaces, that is, HDA, I2S and DMIC are found here. Series starts with updating firmware boot flow - libraries are no longer ignored. This change is dependent on already merged topology code [2] and because of that could not be part of the initial series [1]. PCM operations are split into four changes. First component operations alone i.e. operations which are usually agnostic towards path position (FE/BE). Then it continues with "generic" FE operations - there is no interface split here as from Intel ADSP point of view, FE, or HOST side as it's called in the specs, involves HD-Audio operations only. BE (also known as LINK) side on the other hand is divided into "non-HD-Audio" and HD-Audio part. The former represents transfer over DMIC and I2S interfaces both. While patches implementing standard PCI driver operations along (again standard) HD-Audio initialization routines followed up by power management handlers are two major ones, series covers also other important subjects such as: While patches implementing standard PCI driver operations along (again standard) HD-Audio initialization routines followed up by power management handlers are two major ones, series covers also other important subjects such as: - event tracing - preparation for firmware tracing (debugability) - coredump (debugability) - recovery flow (attempt recovery after IPC timeout or exception) - D0ix (D0 device substate, complements standard power management) Series is finalized by actual addition of supported platforms: SKL and APL-based. Platform-specific files are limited to firmware-specific bits, that is, bits that are specific to given firmware generation. Everything else is shared and is part of already upstream messaging code found in ipc.c, messages.c and messages.h files. [1]: https://lore.kernel.org/all/20220311153544.136854-1-cezary.rojewski@intel.c… [2]: https://lore.kernel.org/all/20220331135246.993089-1-cezary.rojewski@intel.c… Cezary Rojewski (14): ASoC: Intel: avs: Account for libraries when booting basefw ASoC: Intel: avs: Generic soc component driver ASoC: Intel: avs: Generic PCM FE operations ASoC: Intel: avs: non-HDA PCM BE operations ASoC: Intel: avs: HDA PCM BE operations ASoC: Intel: avs: Coredump and recovery flow ASoC: Intel: avs: Prepare for firmware tracing ASoC: Intel: avs: D0ix power state support ASoC: Intel: avs: Event tracing ASoC: Intel: avs: Machine board registration ASoC: Intel: avs: PCI driver implementation ASoC: Intel: avs: Power management ASoC: Intel: avs: SKL-based platforms support ASoC: Intel: avs: APL-based platforms support include/sound/soc-acpi.h | 2 + sound/soc/intel/Kconfig | 4 +- sound/soc/intel/avs/Makefile | 7 +- sound/soc/intel/avs/apl.c | 250 ++++++ sound/soc/intel/avs/avs.h | 79 ++ sound/soc/intel/avs/board_selection.c | 463 ++++++++++ sound/soc/intel/avs/core.c | 655 ++++++++++++++ sound/soc/intel/avs/dsp.c | 27 +- sound/soc/intel/avs/ipc.c | 249 +++++- sound/soc/intel/avs/loader.c | 83 ++ sound/soc/intel/avs/messages.c | 35 +- sound/soc/intel/avs/messages.h | 51 ++ sound/soc/intel/avs/pcm.c | 1182 +++++++++++++++++++++++++ sound/soc/intel/avs/registers.h | 8 + sound/soc/intel/avs/skl.c | 125 +++ sound/soc/intel/avs/topology.c | 2 - sound/soc/intel/avs/trace.c | 33 + sound/soc/intel/avs/trace.h | 158 ++++ sound/soc/intel/avs/utils.c | 23 + 19 files changed, 3421 insertions(+), 15 deletions(-) create mode 100644 sound/soc/intel/avs/apl.c create mode 100644 sound/soc/intel/avs/board_selection.c create mode 100644 sound/soc/intel/avs/pcm.c create mode 100644 sound/soc/intel/avs/skl.c create mode 100644 sound/soc/intel/avs/trace.c create mode 100644 sound/soc/intel/avs/trace.h -- 2.25.1

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[RESEND PATCH v7 0/1] firmware: mtk: add adsp ipc protocol for SOF
by Tinghan Shen 06 May '22

06 May '22

This patch provides mediatek adsp ipc support for SOF. ADSP IPC protocol offers (send/recv) interfaces using mediatek-mailbox APIs. This patch was tested and confirmed to work with SOF fw on MT8195 cherry board. changes since v6: - rebase to matthias.bgg/linux.git, v5.18-next/soc - Prefer "GPL" over "GPL v2" for MODULE_LICENSE changes since v5: - fix WARNING: modpost: missing MODULE_LICENSE() in drivers/mailbox /mtk-adsp-mailbox.o. Add MODULE_LICENSE in the last line. - Due to WARNING: Missing or malformed SPDX-License-Identifier tag in line 1 in checkpatch, we don't remove SPDX-License in line 1. changes since v4: - add error message for wrong mbox chan changes since v3: - rebase on v5.16-rc8 - update reviewers changes since v2: - add out tag for two memory free phases changes since v1: - add comments for mtk_adsp_ipc_send and mtk_adsp_ipc_recv - remove useless MODULE_LICENSE - change label name to out_free TingHan Shen (1): firmware: mediatek: add adsp ipc protocol interface drivers/firmware/Kconfig | 1 + drivers/firmware/Makefile | 1 + drivers/firmware/mediatek/Kconfig | 9 + drivers/firmware/mediatek/Makefile | 2 + drivers/firmware/mediatek/mtk-adsp-ipc.c | 161 ++++++++++++++++++ .../linux/firmware/mediatek/mtk-adsp-ipc.h | 65 +++++++ 6 files changed, 239 insertions(+) create mode 100644 drivers/firmware/mediatek/Kconfig create mode 100644 drivers/firmware/mediatek/Makefile create mode 100644 drivers/firmware/mediatek/mtk-adsp-ipc.c create mode 100644 include/linux/firmware/mediatek/mtk-adsp-ipc.h -- 2.18.0

2 5

RE: [PATCH 02/32] Introduce flexible array struct memcpy() helpers
by David Laight 06 May '22

06 May '22

From: Johannes Berg > Sent: 05 May 2022 21:13 > On Thu, 2022-05-05 at 13:08 -0700, Keith Packard wrote: > > > > I bet you've already considered the simpler form: > > > > struct something *instance = mem_to_flex_dup(byte_array, count, GFP_KERNEL); > > if (IS_ERR(instance)) > > return PTR_ERR(instance); > > > > Sadly, this doesn't work in any way because mem_to_flex_dup() needs to > know at least the type, hence passing 'instance', which is simpler than > passing 'struct something'. You can use: struct something *instance; mem_to_flex_dup(instance, byte_array, count, GFP_KERNEL); if (IS_ERR(instance)) return PTR_ERR(instance); and have mem_to_flex_dup() (which must be a #define) update 'instance'. (You can require &instance - and just precede all the uses with an extra '*' to make it more obvious the variable is updated. But there is little point requiring it be NULL.) If you really want to define the variable mid-block you can use: mem_to_flex_dup(struct something *, instance, byte_array, count, GFP_KERNEL); but I really hate having declarations anywhere other than the top of a function because it makes them hard for the 'mk1 eyeball' to spot. David - Registered Address Lakeside, Bramley Road, Mount Farm, Milton Keynes, MK1 1PT, UK Registration No: 1397386 (Wales)

1 0

[PATCH 0/3] ASoC: SOF: IPC4: Introduce message handling functionality
by Peter Ujfalusi 05 May '22

05 May '22

Hi, The series adds the basic IPC4 message handling code, implementing the ipc callbacks. Due to the difference between IPC3 and IPC4 messaging we need to introduce new message container for IPC4, but the SOF internal callbacks and structures can be kept as they were and leaving it for the IPC specific code to handle the differences. The series provides the foundation for both lowe level (sound/soc/sof/intel) and high level IPC4 implementation (topologies, firmware loading, control handling, etc). Regards, Peter --- Peter Ujfalusi (3): ASoC: SOF: Add rx_data pointer to snd_sof_ipc_msg struct ASoC: SOF: Add initial header file for ipc4 ASoC: SOF: ipc4: Add support for mandatory message handling functionality include/sound/sof/ipc4/header.h | 460 ++++++++++++++++++++++++ sound/soc/sof/Makefile | 3 +- sound/soc/sof/ipc4.c | 604 ++++++++++++++++++++++++++++++++ sound/soc/sof/sof-priv.h | 4 + 4 files changed, 1070 insertions(+), 1 deletion(-) create mode 100644 include/sound/sof/ipc4/header.h create mode 100644 sound/soc/sof/ipc4.c -- 2.36.0

2 4

[PATCH v2 RESEND] ASoC: ti: davinci-mcasp: Add dma-type for bcdma
by Jai Luthra 05 May '22

05 May '22

From: Jayesh Choudhary <j-choudhary(a)ti.com> Set DMA type for ti-bcdma controller for AM62-SK. Acked-by: Peter Ujfalusi <peter.ujfalusi(a)gmail.com> Signed-off-by: Jayesh Choudhary <j-choudhary(a)ti.com> Signed-off-by: Jai Luthra <j-luthra(a)ti.com> --- Resending the ack-ed patch, as I missed cc'ing all maintainers. sound/soc/ti/davinci-mcasp.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/sound/soc/ti/davinci-mcasp.c b/sound/soc/ti/davinci-mcasp.c index 2c146b91fca3..377be2e2b6ee 100644 --- a/sound/soc/ti/davinci-mcasp.c +++ b/sound/soc/ti/davinci-mcasp.c @@ -2047,6 +2047,8 @@ static int davinci_mcasp_get_dma_type(struct davinci_mcasp *mcasp) return PCM_SDMA; else if (strstr(tmp, "udmap")) return PCM_UDMA; + else if (strstr(tmp, "bcdma")) + return PCM_UDMA; return PCM_EDMA; } -- 2.17.1

2 1

[PATCH] ASoC: fsl_micfil: fix the naming style for mask definition
by Shengjiu Wang 05 May '22

05 May '22

Remove the _SHIFT for the mask definition. Fixes: 17f2142bae4b ("ASoC: fsl_micfil: use GENMASK to define register bit fields") Signed-off-by: Shengjiu Wang <shengjiu.wang(a)nxp.com> --- sound/soc/fsl/fsl_micfil.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/sound/soc/fsl/fsl_micfil.h b/sound/soc/fsl/fsl_micfil.h index 08901827047d..053caba3caf3 100644 --- a/sound/soc/fsl/fsl_micfil.h +++ b/sound/soc/fsl/fsl_micfil.h @@ -74,9 +74,9 @@ #define MICFIL_FIFO_STAT_FIFOX_UNDER(ch) BIT((ch) + 8) /* MICFIL HWVAD0 Control 1 Register -- REG_MICFIL_VAD0_CTRL1*/ -#define MICFIL_VAD0_CTRL1_CHSEL_SHIFT GENMASK(26, 24) -#define MICFIL_VAD0_CTRL1_CICOSR_SHIFT GENMASK(19, 16) -#define MICFIL_VAD0_CTRL1_INITT_SHIFT GENMASK(12, 8) +#define MICFIL_VAD0_CTRL1_CHSEL GENMASK(26, 24) +#define MICFIL_VAD0_CTRL1_CICOSR GENMASK(19, 16) +#define MICFIL_VAD0_CTRL1_INITT GENMASK(12, 8) #define MICFIL_VAD0_CTRL1_ST10 BIT(4) #define MICFIL_VAD0_CTRL1_ERIE BIT(3) #define MICFIL_VAD0_CTRL1_IE BIT(2) @@ -106,7 +106,7 @@ /* MICFIL HWVAD0 Zero-Crossing Detector - REG_MICFIL_VAD0_ZCD */ #define MICFIL_VAD0_ZCD_ZCDTH GENMASK(25, 16) -#define MICFIL_VAD0_ZCD_ZCDADJ_SHIFT GENMASK(11, 8) +#define MICFIL_VAD0_ZCD_ZCDADJ GENMASK(11, 8) #define MICFIL_VAD0_ZCD_ZCDAND BIT(4) #define MICFIL_VAD0_ZCD_ZCDAUT BIT(2) #define MICFIL_VAD0_ZCD_ZCDEN BIT(0) -- 2.17.1

3 2

[PATCH v1 1/1] ASoC: cs43130: Re-use generic struct u16_fract
by Andy Shevchenko 05 May '22

05 May '22

Instead of custom data type re-use generic struct u16_fract. No changes intended. Signed-off-by: Andy Shevchenko <andriy.shevchenko(a)linux.intel.com> --- sound/soc/codecs/cs43130.c | 16 ++-- sound/soc/codecs/cs43130.h | 151 +++++++++++++++++++------------------ 2 files changed, 84 insertions(+), 83 deletions(-) diff --git a/sound/soc/codecs/cs43130.c b/sound/soc/codecs/cs43130.c index 04548b577ad5..a2bce0f9f247 100644 --- a/sound/soc/codecs/cs43130.c +++ b/sound/soc/codecs/cs43130.c @@ -712,30 +712,30 @@ static int cs43130_set_sp_fmt(int dai_id, unsigned int bitwidth_sclk, case CS43130_ASP_PCM_DAI: case CS43130_ASP_DOP_DAI: regmap_write(cs43130->regmap, CS43130_ASP_DEN_1, - (clk_gen->den & CS43130_SP_M_LSB_DATA_MASK) >> + (clk_gen->v.denominator & CS43130_SP_M_LSB_DATA_MASK) >> CS43130_SP_M_LSB_DATA_SHIFT); regmap_write(cs43130->regmap, CS43130_ASP_DEN_2, - (clk_gen->den & CS43130_SP_M_MSB_DATA_MASK) >> + (clk_gen->v.denominator & CS43130_SP_M_MSB_DATA_MASK) >> CS43130_SP_M_MSB_DATA_SHIFT); regmap_write(cs43130->regmap, CS43130_ASP_NUM_1, - (clk_gen->num & CS43130_SP_N_LSB_DATA_MASK) >> + (clk_gen->v.numerator & CS43130_SP_N_LSB_DATA_MASK) >> CS43130_SP_N_LSB_DATA_SHIFT); regmap_write(cs43130->regmap, CS43130_ASP_NUM_2, - (clk_gen->num & CS43130_SP_N_MSB_DATA_MASK) >> + (clk_gen->v.numerator & CS43130_SP_N_MSB_DATA_MASK) >> CS43130_SP_N_MSB_DATA_SHIFT); break; case CS43130_XSP_DOP_DAI: regmap_write(cs43130->regmap, CS43130_XSP_DEN_1, - (clk_gen->den & CS43130_SP_M_LSB_DATA_MASK) >> + (clk_gen->v.denominator & CS43130_SP_M_LSB_DATA_MASK) >> CS43130_SP_M_LSB_DATA_SHIFT); regmap_write(cs43130->regmap, CS43130_XSP_DEN_2, - (clk_gen->den & CS43130_SP_M_MSB_DATA_MASK) >> + (clk_gen->v.denominator & CS43130_SP_M_MSB_DATA_MASK) >> CS43130_SP_M_MSB_DATA_SHIFT); regmap_write(cs43130->regmap, CS43130_XSP_NUM_1, - (clk_gen->num & CS43130_SP_N_LSB_DATA_MASK) >> + (clk_gen->v.numerator & CS43130_SP_N_LSB_DATA_MASK) >> CS43130_SP_N_LSB_DATA_SHIFT); regmap_write(cs43130->regmap, CS43130_XSP_NUM_2, - (clk_gen->num & CS43130_SP_N_MSB_DATA_MASK) >> + (clk_gen->v.numerator & CS43130_SP_N_MSB_DATA_MASK) >> CS43130_SP_N_MSB_DATA_SHIFT); break; default: diff --git a/sound/soc/codecs/cs43130.h b/sound/soc/codecs/cs43130.h index e62d671e95bb..1dd893674313 100644 --- a/sound/soc/codecs/cs43130.h +++ b/sound/soc/codecs/cs43130.h @@ -10,6 +10,8 @@ #ifndef __CS43130_H__ #define __CS43130_H__ +#include <linux/math.h> + /* CS43130 registers addresses */ /* all reg address is shifted by a byte for control byte to be LSB */ #define CS43130_FIRSTREG 0x010000 @@ -372,97 +374,96 @@ enum cs43130_dai_id { }; struct cs43130_clk_gen { - unsigned int mclk_int; - int fs; - u16 den; - u16 num; + unsigned int mclk_int; + int fs; + struct u16_fract v; }; /* frm_size = 16 */ static const struct cs43130_clk_gen cs43130_16_clk_gen[] = { - {22579200, 32000, 441, 10,}, - {22579200, 44100, 32, 1,}, - {22579200, 48000, 147, 5,}, - {22579200, 88200, 16, 1,}, - {22579200, 96000, 147, 10,}, - {22579200, 176400, 8, 1,}, - {22579200, 192000, 147, 20,}, - {22579200, 352800, 4, 1,}, - {22579200, 384000, 147, 40,}, - {24576000, 32000, 48, 1,}, - {24576000, 44100, 5120, 147,}, - {24576000, 48000, 32, 1,}, - {24576000, 88200, 2560, 147,}, - {24576000, 96000, 16, 1,}, - {24576000, 176400, 1280, 147,}, - {24576000, 192000, 8, 1,}, - {24576000, 352800, 640, 147,}, - {24576000, 384000, 4, 1,}, + { 22579200, 32000, .v = { 441, 10, }, }, + { 22579200, 44100, .v = { 32, 1, }, }, + { 22579200, 48000, .v = { 147, 5, }, }, + { 22579200, 88200, .v = { 16, 1, }, }, + { 22579200, 96000, .v = { 147, 10, }, }, + { 22579200, 176400, .v = { 8, 1, }, }, + { 22579200, 192000, .v = { 147, 20, }, }, + { 22579200, 352800, .v = { 4, 1, }, }, + { 22579200, 384000, .v = { 147, 40, }, }, + { 24576000, 32000, .v = { 48, 1, }, }, + { 24576000, 44100, .v = { 5120, 147, }, }, + { 24576000, 48000, .v = { 32, 1, }, }, + { 24576000, 88200, .v = { 2560, 147, }, }, + { 24576000, 96000, .v = { 16, 1, }, }, + { 24576000, 176400, .v = { 1280, 147, }, }, + { 24576000, 192000, .v = { 8, 1, }, }, + { 24576000, 352800, .v = { 640, 147, }, }, + { 24576000, 384000, .v = { 4, 1, }, }, }; /* frm_size = 32 */ static const struct cs43130_clk_gen cs43130_32_clk_gen[] = { - {22579200, 32000, 441, 20,}, - {22579200, 44100, 16, 1,}, - {22579200, 48000, 147, 10,}, - {22579200, 88200, 8, 1,}, - {22579200, 96000, 147, 20,}, - {22579200, 176400, 4, 1,}, - {22579200, 192000, 147, 40,}, - {22579200, 352800, 2, 1,}, - {22579200, 384000, 147, 80,}, - {24576000, 32000, 24, 1,}, - {24576000, 44100, 2560, 147,}, - {24576000, 48000, 16, 1,}, - {24576000, 88200, 1280, 147,}, - {24576000, 96000, 8, 1,}, - {24576000, 176400, 640, 147,}, - {24576000, 192000, 4, 1,}, - {24576000, 352800, 320, 147,}, - {24576000, 384000, 2, 1,}, + { 22579200, 32000, .v = { 441, 20, }, }, + { 22579200, 44100, .v = { 16, 1, }, }, + { 22579200, 48000, .v = { 147, 10, }, }, + { 22579200, 88200, .v = { 8, 1, }, }, + { 22579200, 96000, .v = { 147, 20, }, }, + { 22579200, 176400, .v = { 4, 1, }, }, + { 22579200, 192000, .v = { 147, 40, }, }, + { 22579200, 352800, .v = { 2, 1, }, }, + { 22579200, 384000, .v = { 147, 80, }, }, + { 24576000, 32000, .v = { 24, 1, }, }, + { 24576000, 44100, .v = { 2560, 147, }, }, + { 24576000, 48000, .v = { 16, 1, }, }, + { 24576000, 88200, .v = { 1280, 147, }, }, + { 24576000, 96000, .v = { 8, 1, }, }, + { 24576000, 176400, .v = { 640, 147, }, }, + { 24576000, 192000, .v = { 4, 1, }, }, + { 24576000, 352800, .v = { 320, 147, }, }, + { 24576000, 384000, .v = { 2, 1, }, }, }; /* frm_size = 48 */ static const struct cs43130_clk_gen cs43130_48_clk_gen[] = { - {22579200, 32000, 147, 100,}, - {22579200, 44100, 32, 3,}, - {22579200, 48000, 49, 5,}, - {22579200, 88200, 16, 3,}, - {22579200, 96000, 49, 10,}, - {22579200, 176400, 8, 3,}, - {22579200, 192000, 49, 20,}, - {22579200, 352800, 4, 3,}, - {22579200, 384000, 49, 40,}, - {24576000, 32000, 16, 1,}, - {24576000, 44100, 5120, 441,}, - {24576000, 48000, 32, 3,}, - {24576000, 88200, 2560, 441,}, - {24576000, 96000, 16, 3,}, - {24576000, 176400, 1280, 441,}, - {24576000, 192000, 8, 3,}, - {24576000, 352800, 640, 441,}, - {24576000, 384000, 4, 3,}, + { 22579200, 32000, .v = { 147, 100, }, }, + { 22579200, 44100, .v = { 32, 3, }, }, + { 22579200, 48000, .v = { 49, 5, }, }, + { 22579200, 88200, .v = { 16, 3, }, }, + { 22579200, 96000, .v = { 49, 10, }, }, + { 22579200, 176400, .v = { 8, 3, }, }, + { 22579200, 192000, .v = { 49, 20, }, }, + { 22579200, 352800, .v = { 4, 3, }, }, + { 22579200, 384000, .v = { 49, 40, }, }, + { 24576000, 32000, .v = { 16, 1, }, }, + { 24576000, 44100, .v = { 5120, 441, }, }, + { 24576000, 48000, .v = { 32, 3, }, }, + { 24576000, 88200, .v = { 2560, 441, }, }, + { 24576000, 96000, .v = { 16, 3, }, }, + { 24576000, 176400, .v = { 1280, 441, }, }, + { 24576000, 192000, .v = { 8, 3, }, }, + { 24576000, 352800, .v = { 640, 441, }, }, + { 24576000, 384000, .v = { 4, 3, }, }, }; /* frm_size = 64 */ static const struct cs43130_clk_gen cs43130_64_clk_gen[] = { - {22579200, 32000, 441, 40,}, - {22579200, 44100, 8, 1,}, - {22579200, 48000, 147, 20,}, - {22579200, 88200, 4, 1,}, - {22579200, 96000, 147, 40,}, - {22579200, 176400, 2, 1,}, - {22579200, 192000, 147, 80,}, - {22579200, 352800, 1, 1,}, - {24576000, 32000, 12, 1,}, - {24576000, 44100, 1280, 147,}, - {24576000, 48000, 8, 1,}, - {24576000, 88200, 640, 147,}, - {24576000, 96000, 4, 1,}, - {24576000, 176400, 320, 147,}, - {24576000, 192000, 2, 1,}, - {24576000, 352800, 160, 147,}, - {24576000, 384000, 1, 1,}, + { 22579200, 32000, .v = { 441, 40, }, }, + { 22579200, 44100, .v = { 8, 1, }, }, + { 22579200, 48000, .v = { 147, 20, }, }, + { 22579200, 88200, .v = { 4, 1, }, }, + { 22579200, 96000, .v = { 147, 40, }, }, + { 22579200, 176400, .v = { 2, 1, }, }, + { 22579200, 192000, .v = { 147, 80, }, }, + { 22579200, 352800, .v = { 1, 1, }, }, + { 24576000, 32000, .v = { 12, 1, }, }, + { 24576000, 44100, .v = { 1280, 147, }, }, + { 24576000, 48000, .v = { 8, 1, }, }, + { 24576000, 88200, .v = { 640, 147, }, }, + { 24576000, 96000, .v = { 4, 1, }, }, + { 24576000, 176400, .v = { 320, 147, }, }, + { 24576000, 192000, .v = { 2, 1, }, }, + { 24576000, 352800, .v = { 160, 147, }, }, + { 24576000, 384000, .v = { 1, 1, }, }, }; struct cs43130_bitwidth_map { -- 2.35.1

3 2

[PATCH v3 0/6] Add driver for SAMA7G5's PDMC
by Codrin Ciubotariu 05 May '22

05 May '22

This patch series adds support for Pulse Density Microphone Controller (PDMC), present on Microchip's SAMA7G5. The PDMC interfaces up to 4 digital microphones having Pulse Density Modulated (PDM) outputs. It generates a single clock line and samples 1 or 2 data lines. The signal path includes an audio grade programmable decimation filter and outputs 24-bit audio words. The source of each channel can be independently defined as PDMC_DS0 or PDMC_DS1, sampled at the rising or falling edge of PDMC_CLK. The patch series starts with a fix on the ASoC DMA engine support. Then continues with the bindings and the driver of PDMC. It is followed by the DT nodes for SAMA7G5 and SAMA7G5-EK. In the end, the drivers for PDMC and PDM microphones are enabled in sama7_defconfig. Changes in v3: - addressed new DT bindings comments from Krzysztof Kozlowski Changes in v2: - addressed DT bindings comments from Krzysztof Kozlowski Codrin Ciubotariu (6): ASoC: dmaengine: do not use a NULL prepare_slave_config() callback ASoC: dt-bindings: Document Microchip's PDMC ASoC: atmel: mchp-pdmc: add PDMC driver ARM: dts: at91: sama7g5: add nodes for PDMC ARM: dts: at91: sama7g5ek: add node for PDMC0 ARM: configs: at91: sama7_defconfig: add MCHP PDMC and DMIC drivers .../bindings/sound/microchip,pdmc.yaml | 100 ++ arch/arm/boot/dts/at91-sama7g5ek.dts | 21 +- arch/arm/boot/dts/sama7g5.dtsi | 24 + arch/arm/configs/sama7_defconfig | 2 + include/dt-bindings/sound/microchip,pdmc.h | 13 + sound/soc/atmel/Kconfig | 16 + sound/soc/atmel/Makefile | 2 + sound/soc/atmel/mchp-pdmc.c | 1084 +++++++++++++++++ sound/soc/soc-generic-dmaengine-pcm.c | 6 +- 9 files changed, 1264 insertions(+), 4 deletions(-) create mode 100644 Documentation/devicetree/bindings/sound/microchip,pdmc.yaml create mode 100644 include/dt-bindings/sound/microchip,pdmc.h create mode 100644 sound/soc/atmel/mchp-pdmc.c -- 2.32.0

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[PATCH v3 20/21] xen/sndfront: use xenbus_setup_ring() and xenbus_teardown_ring()
by Juergen Gross 05 May '22

05 May '22

Simplify sndfront's ring creation and removal via xenbus_setup_ring() and xenbus_teardown_ring(). Signed-off-by: Juergen Gross <jgross(a)suse.com> --- sound/xen/xen_snd_front_evtchnl.c | 44 +++++++------------------------ 1 file changed, 10 insertions(+), 34 deletions(-) diff --git a/sound/xen/xen_snd_front_evtchnl.c b/sound/xen/xen_snd_front_evtchnl.c index 3e21369c8216..26d1b3987887 100644 --- a/sound/xen/xen_snd_front_evtchnl.c +++ b/sound/xen/xen_snd_front_evtchnl.c @@ -143,12 +143,12 @@ void xen_snd_front_evtchnl_flush(struct xen_snd_front_evtchnl *channel) static void evtchnl_free(struct xen_snd_front_info *front_info, struct xen_snd_front_evtchnl *channel) { - unsigned long page = 0; + void *page = NULL; if (channel->type == EVTCHNL_TYPE_REQ) - page = (unsigned long)channel->u.req.ring.sring; + page = channel->u.req.ring.sring; else if (channel->type == EVTCHNL_TYPE_EVT) - page = (unsigned long)channel->u.evt.page; + page = channel->u.evt.page; if (!page) return; @@ -167,10 +167,7 @@ static void evtchnl_free(struct xen_snd_front_info *front_info, xenbus_free_evtchn(front_info->xb_dev, channel->port); /* End access and free the page. */ - if (channel->gref != INVALID_GRANT_REF) - gnttab_end_foreign_access(channel->gref, page); - else - free_page(page); + xenbus_teardown_ring(&page, 1, &channel->gref); memset(channel, 0, sizeof(*channel)); } @@ -196,8 +193,7 @@ static int evtchnl_alloc(struct xen_snd_front_info *front_info, int index, enum xen_snd_front_evtchnl_type type) { struct xenbus_device *xb_dev = front_info->xb_dev; - unsigned long page; - grant_ref_t gref; + void *page; irq_handler_t handler; char *handler_name = NULL; int ret; @@ -207,12 +203,9 @@ static int evtchnl_alloc(struct xen_snd_front_info *front_info, int index, channel->index = index; channel->front_info = front_info; channel->state = EVTCHNL_STATE_DISCONNECTED; - channel->gref = INVALID_GRANT_REF; - page = get_zeroed_page(GFP_KERNEL); - if (!page) { - ret = -ENOMEM; + ret = xenbus_setup_ring(xb_dev, GFP_KERNEL, &page, 1, &channel->gref); + if (ret) goto fail; - } handler_name = kasprintf(GFP_KERNEL, "%s-%s", XENSND_DRIVER_NAME, type == EVTCHNL_TYPE_REQ ? @@ -226,33 +219,18 @@ static int evtchnl_alloc(struct xen_snd_front_info *front_info, int index, mutex_init(&channel->ring_io_lock); if (type == EVTCHNL_TYPE_REQ) { - struct xen_sndif_sring *sring = (struct xen_sndif_sring *)page; + struct xen_sndif_sring *sring = page; init_completion(&channel->u.req.completion); mutex_init(&channel->u.req.req_io_lock); - SHARED_RING_INIT(sring); - FRONT_RING_INIT(&channel->u.req.ring, sring, XEN_PAGE_SIZE); - - ret = xenbus_grant_ring(xb_dev, sring, 1, &gref); - if (ret < 0) { - channel->u.req.ring.sring = NULL; - goto fail; - } + XEN_FRONT_RING_INIT(&channel->u.req.ring, sring, XEN_PAGE_SIZE); handler = evtchnl_interrupt_req; } else { - ret = gnttab_grant_foreign_access(xb_dev->otherend_id, - virt_to_gfn((void *)page), 0); - if (ret < 0) - goto fail; - - channel->u.evt.page = (struct xensnd_event_page *)page; - gref = ret; + channel->u.evt.page = page; handler = evtchnl_interrupt_evt; } - channel->gref = gref; - ret = xenbus_alloc_evtchn(xb_dev, &channel->port); if (ret < 0) goto fail; @@ -279,8 +257,6 @@ static int evtchnl_alloc(struct xen_snd_front_info *front_info, int index, return 0; fail: - if (page) - free_page(page); kfree(handler_name); dev_err(&xb_dev->dev, "Failed to allocate ring: %d\n", ret); return ret; -- 2.35.3

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[PATCH v3 08/21] xen/sound: switch xen_snd_front to use INVALID_GRANT_REF
by Juergen Gross 05 May '22

05 May '22

Instead of using a private macro for an invalid grant reference use the common one. Signed-off-by: Juergen Gross <jgross(a)suse.com> --- sound/xen/xen_snd_front_evtchnl.c | 4 ++-- sound/xen/xen_snd_front_evtchnl.h | 9 --------- 2 files changed, 2 insertions(+), 11 deletions(-) diff --git a/sound/xen/xen_snd_front_evtchnl.c b/sound/xen/xen_snd_front_evtchnl.c index ecbc294fc59a..3e21369c8216 100644 --- a/sound/xen/xen_snd_front_evtchnl.c +++ b/sound/xen/xen_snd_front_evtchnl.c @@ -167,7 +167,7 @@ static void evtchnl_free(struct xen_snd_front_info *front_info, xenbus_free_evtchn(front_info->xb_dev, channel->port); /* End access and free the page. */ - if (channel->gref != GRANT_INVALID_REF) + if (channel->gref != INVALID_GRANT_REF) gnttab_end_foreign_access(channel->gref, page); else free_page(page); @@ -207,7 +207,7 @@ static int evtchnl_alloc(struct xen_snd_front_info *front_info, int index, channel->index = index; channel->front_info = front_info; channel->state = EVTCHNL_STATE_DISCONNECTED; - channel->gref = GRANT_INVALID_REF; + channel->gref = INVALID_GRANT_REF; page = get_zeroed_page(GFP_KERNEL); if (!page) { ret = -ENOMEM; diff --git a/sound/xen/xen_snd_front_evtchnl.h b/sound/xen/xen_snd_front_evtchnl.h index cbe51fd1ec15..3675fba70564 100644 --- a/sound/xen/xen_snd_front_evtchnl.h +++ b/sound/xen/xen_snd_front_evtchnl.h @@ -15,15 +15,6 @@ struct xen_snd_front_info; -#ifndef GRANT_INVALID_REF -/* - * FIXME: usage of grant reference 0 as invalid grant reference: - * grant reference 0 is valid, but never exposed to a PV driver, - * because of the fact it is already in use/reserved by the PV console. - */ -#define GRANT_INVALID_REF 0 -#endif - /* Timeout in ms to wait for backend to respond. */ #define VSND_WAIT_BACK_MS 3000 -- 2.35.3

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