lwn.git/sound/soc/qcom/lpass-platform.c, branch docs-6.1

ASoC: qcom: lpass-platform: Update VMA access permissions in mmap callback

2022-06-01T10:24:10+00:00

Replace page protection permissions from noncashed to writecombine, in lpass codec DMA path mmp callabck, to support 64 bit chromeOS. Avoid SIGBUS error in userspace caused by noncached permissions in 64 bit chromeOS. Signed-off-by: Srinivasa Rao Mandadapu Link: https://lore.kernel.org/r/1653660608-27245-1-git-send-email-quic_srivasam@quicinc.com Signed-off-by: Mark Brown

ASoC: qcom: lpass-platform: Update memremap flag to MEMREMAP_WC

2022-04-19T11:04:07+00:00

Update memremap flag from MEMREMAP_WT to MEMREMAP_WC for better performance. Signed-off-by: Srinivasa Rao Mandadapu Co-developed-by: Venkata Prasad Potturu Signed-off-by: Venkata Prasad Potturu Link: https://lore.kernel.org/r/1649844596-5264-1-git-send-email-quic_srivasam@quicinc.com Signed-off-by: Mark Brown

Merge tag 'asoc-v5.18' of https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound into for-linus

2022-03-21T15:19:21+00:00

ASoC: Updates for v5.18 Quite a quiet release for ASoC, lots of work on drivers and platforms but nothing too groundbreaking but not much on the core itself: - Start of moving SoF to support multiple IPC mechanisms. - Use of NHLT ACPI table to reduce the amount of quirking required for Intel systems. - Some building blocks for use in forthcoming Intel AVS driver for legacy Intel DSP firmwares. - Support for AMD PDM, Atmel PDMC, Awinic AW8738, i.MX cards with TLV320AIC31xx, Intel machines with CS35L41 and ESSX8336, Mediatek MT8181 wideband bluetooth, nVidia Tegra234, Qualcomm SC7280, Renesas RZ/V2L, Texas Instruments TAS585M

ASoC: qcom: Fix error code in lpass_platform_copy()

2022-03-02T13:45:27+00:00

The copy_to/from_user() functions return the number of bytes remaining to be copied. This function needs to return negative error codes because snd_soc_pcm_component_copy_user() treats positive returns as success in soc_component_ret(). Fixes: 7d7209557b67 ("ASoC: qcom: Add support for codec dma driver") Signed-off-by: Dan Carpenter Link: https://lore.kernel.org/r/20220301081104.GB17375@kili Signed-off-by: Mark Brown

ASoC: qcom: lpass-platform: Update warning print to control excess logging

2022-02-25T13:45:42+00:00

Update dev_warn to dev_warn_ratelimit to control excess xrun logging in lpass platform driver. Signed-off-by: Srinivasa Rao Mandadapu Co-developed-by: Venkata Prasad Potturu Signed-off-by: Venkata Prasad Potturu Link: https://lore.kernel.org/r/1645792943-24845-1-git-send-email-quic_srivasam@quicinc.com Signed-off-by: Mark Brown

ASoC: qcom: Add support for codec dma driver

2022-02-24T20:21:45+00:00

Upadate lpass cpu and platform driver to support audio over codec dma in ADSP bypass use case. Signed-off-by: Srinivasa Rao Mandadapu Co-developed-by: Venkata Prasad Potturu Signed-off-by: Venkata Prasad Potturu Reported-by: kernel test robot Link: https://lore.kernel.org/r/1645716828-15305-7-git-send-email-quic_srivasam@quicinc.com Signed-off-by: Mark Brown

ASoC: qcom: Add helper function to get dma control and lpaif handle

2022-02-24T20:21:41+00:00

Add support function to get dma control and lpaif handle to avoid repeated code in platform driver Signed-off-by: Srinivasa Rao Mandadapu Co-developed-by: Venkata Prasad Potturu Signed-off-by: Venkata Prasad Potturu Reviewed-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/1645716828-15305-4-git-send-email-quic_srivasam@quicinc.com Signed-off-by: Mark Brown

ASoC: qcom: Move lpass_pcm_data structure to lpass header

2022-02-24T20:21:39+00:00

Declare lpass_pcm_data structure in lpass header file instead of platform source file to make common use of it by other drivers Signed-off-by: Srinivasa Rao Mandadapu Co-developed-by: Venkata Prasad Potturu Signed-off-by: Venkata Prasad Potturu Reviewed-by: Srinivas Kandagatla Link: https://lore.kernel.org/r/1645716828-15305-2-git-send-email-quic_srivasam@quicinc.com Signed-off-by: Mark Brown

ASoC: qcom: Actually clear DMA interrupt register for HDMI

2022-02-10T13:14:38+00:00

In commit da0363f7bfd3 ("ASoC: qcom: Fix for DMA interrupt clear reg overwriting") we changed regmap_write() to regmap_update_bits() so that we can avoid overwriting bits that we didn't intend to modify. Unfortunately this change breaks the case where a register is writable but not readable, which is exactly how the HDMI irq clear register is designed (grep around LPASS_HDMITX_APP_IRQCLEAR_REG to see how it's write only). That's because regmap_update_bits() tries to read the register from the hardware and if it isn't readable it looks in the regmap cache to see what was written there last time to compare against what we want to write there. Eventually, we're unable to modify this register at all because the bits that we're trying to set are already set in the cache. This is doubly bad for the irq clear register because you have to write the bit to clear an interrupt. Given the irq is level triggered, we see an interrupt storm upon plugging in an HDMI cable and starting audio playback. The irq storm is so great that performance degrades significantly, leading to CPU soft lockups. Fix it by using regmap_write_bits() so that we really do write the bits in the clear register that we want to. This brings the number of irqs handled by lpass_dma_interrupt_handler() down from ~150k/sec to ~10/sec. Fixes: da0363f7bfd3 ("ASoC: qcom: Fix for DMA interrupt clear reg overwriting") Cc: Srinivasa Rao Mandadapu Cc: Srinivas Kandagatla Signed-off-by: Stephen Boyd Link: https://lore.kernel.org/r/20220209232520.4017634-1-swboyd@chromium.org Signed-off-by: Mark Brown

ASoC: qcom: lpass: Use managed buffer allocation

2021-08-04T06:09:23+00:00

This patch simplifies the buffer pre-allocation code of qcom lpass driver with the standard managed buffer helper. It uses the newly introduced fixed-size buffer allocation helper. Cc: Srinivas Kandagatla Cc: Banajit Goswami Acked-by: Mark Brown Link: https://lore.kernel.org/r/20210802072815.13551-14-tiwai@suse.de Signed-off-by: Takashi Iwai