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Message-ID: <CAJhJPsUmG7nRycKzbiPKMJfgN-0ZdDH3mV3k8prizunD2G0HiQ@mail.gmail.com> Date: Mon, 15 Jul 2024 14:55:55 +0800 From: Keguang Zhang <keguang.zhang@...il.com> To: Huacai Chen <chenhuacai@...nel.org> Cc: Vinod Koul <vkoul@...nel.org>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>, Conor Dooley <conor+dt@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, linux-mips@...r.kernel.org, dmaengine@...r.kernel.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, Conor Dooley <conor.dooley@...rochip.com>, Jiaxun Yang <jiaxun.yang@...goat.com> Subject: Re: [PATCH RESEND v9 0/2] Add support for Loongson1 APB DMA On Mon, Jul 15, 2024 at 2:39 PM Huacai Chen <chenhuacai@...nel.org> wrote: > > On Fri, Jul 12, 2024 at 2:23 PM Keguang Zhang <keguang.zhang@...il.com> wrote: > > > > On Fri, Jul 12, 2024 at 12:22 PM Huacai Chen <chenhuacai@...nel.org> wrote: > > > > > > Hi, Keguang, > > > > > > I accept your suggestion about the cpufreq driver naming, and now it > > > is upstream: > > > https://git.kernel.org/pub/scm/linux/kernel/git/vireshk/pm.git/commit/?h=cpufreq/arm/linux-next&id=ccf51454145bffd98e31cdbe54a4262473c609e2 > > > > > > I still hope you can accept my suggestion about the dma driver naming. > > > > > > I know you hope me rename LS2X_APB_DMA to LOONGSON2_APB_DMA, but as I > > > said before, renaming an existing Kconfig option will break config > > > files. > > > > > > See an example: > > > Commit a50a3f4b6a313dc76912bd4ad3b8b4f4b4 introduce PREEMPT_RT and > > > rename PREEMPT to PREEMPT_LL, but then commit > > > b8d3349803ba34afda429e87a837fd95a9 rename it back because of config > > > files broken. > > > > > Hi Huacai, > > I understand the breaking issue of the Kconfig option, so you can keep > > LS2X_APB_DMA. > LS2X_APB_DMA with loongson2-apb-dma.c? Even if I accept this, can you > accept LS1X_APB_DMA with loongson1-apb-dma.c? > > > You said that you've accepted my suggestion, which means you recognize > > 'loongson' as the better name for the drivers. > No, I don't think so, this is just a compromise to keep consistency. > Sorry. The naming 'Loongson1' is the real consistency that I need to maintain. Thanks! > > > Huacai > > > Moreover, Loongson1 and Loongson2 belong to different SoC series. > > To be honest, I can't see why Loongson1 APB DMA should give up this > > intuitive and comprehensible naming. > > Thanks for your review! > > > > > > Huacai > > > > > > On Thu, Jul 11, 2024 at 6:57 PM Keguang Zhang via B4 Relay > > > <devnull+keguang.zhang.gmail.com@...nel.org> wrote: > > > > > > > > Add the driver and dt-binding document for Loongson1 APB DMA. > > > > > > > > --- > > > > Changes in v9: > > > > - Fix all the errors and warnings when building with W=1 and C=1 > > > > - Link to v8: https://lore.kernel.org/r/20240607-loongson1-dma-v8-0-f9992d257250@gmail.com > > > > > > > > Changes in v8: > > > > - Change 'interrupts' property to an items list > > > > - Link to v7: https://lore.kernel.org/r/20240329-loongson1-dma-v7-0-37db58608de5@gmail.com > > > > > > > > Changes in v7: > > > > - Change the comptible to 'loongson,ls1*-apbdma' (suggested by Huacai Chen) > > > > - Update the title and description part accordingly > > > > - Rename the file to loongson,ls1b-apbdma.yaml > > > > - Add a compatible string for LS1A > > > > - Delete minItems of 'interrupts' > > > > - Change patterns of 'interrupt-names' to const > > > > - Rename the file to loongson1-apb-dma.c to keep the consistency > > > > - Update Kconfig and Makefile accordingly > > > > - Link to v6: https://lore.kernel.org/r/20240316-loongson1-dma-v6-0-90de2c3cc928@gmail.com > > > > > > > > Changes in v6: > > > > - Change the compatible to the fallback > > > > - Implement .device_prep_dma_cyclic for Loongson1 sound driver, > > > > - as well as .device_pause and .device_resume. > > > > - Set the limitation LS1X_DMA_MAX_DESC and put all descriptors > > > > - into one page to save memory > > > > - Move dma_pool_zalloc() into ls1x_dma_alloc_desc() > > > > - Drop dma_slave_config structure > > > > - Use .remove_new instead of .remove > > > > - Use KBUILD_MODNAME for the driver name > > > > - Improve the debug information > > > > - Some minor fixes > > > > > > > > Changes in v5: > > > > - Add the dt-binding document > > > > - Add DT support > > > > - Use DT information instead of platform data > > > > - Use chan_id of struct dma_chan instead of own id > > > > - Use of_dma_xlate_by_chan_id() instead of ls1x_dma_filter() > > > > - Update the author information to my official name > > > > > > > > Changes in v4: > > > > - Use dma_slave_map to find the proper channel. > > > > - Explicitly call devm_request_irq() and tasklet_kill(). > > > > - Fix namespace issue. > > > > - Some minor fixes and cleanups. > > > > > > > > Changes in v3: > > > > - Rename ls1x_dma_filter_fn to ls1x_dma_filter. > > > > > > > > Changes in v2: > > > > - Change the config from 'DMA_LOONGSON1' to 'LOONGSON1_DMA', > > > > - and rearrange it in alphabetical order in Kconfig and Makefile. > > > > - Fix comment style. > > > > > > > > --- > > > > Keguang Zhang (2): > > > > dt-bindings: dma: Add Loongson-1 APB DMA > > > > dmaengine: Loongson1: Add Loongson-1 APB DMA driver > > > > > > > > .../bindings/dma/loongson,ls1b-apbdma.yaml | 67 +++ > > > > drivers/dma/Kconfig | 9 + > > > > drivers/dma/Makefile | 1 + > > > > drivers/dma/loongson1-apb-dma.c | 665 +++++++++++++++++++++ > > > > 4 files changed, 742 insertions(+) > > > > --- > > > > base-commit: d35b2284e966c0bef3e2182a5c5ea02177dd32e4 > > > > change-id: 20231120-loongson1-dma-163afe5708b9 > > > > > > > > Best regards, > > > > -- > > > > Keguang Zhang <keguang.zhang@...il.com> > > > > > > > > > > > > > > > > > > > > -- > > Best regards, > > > > Keguang Zhang -- Best regards, Keguang Zhang
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