| Message ID | 20241027180903.2035820-2-csokas.bence@prolan.hu (mailing list archive) |
|---|---|
| State | New |
| Headers | show |
| Series | None | expand |
On Sun, Oct 27, 2024 at 07:08:55PM +0100, Csókás, Bence wrote: > From: Mesih Kilinc <mesihkilinc@gmail.com> > > Allwinner suniv F1C100s has a reset bit for DMA in CCU. Sun4i do not > has this bit but in order to support suniv we need to add it. So add > support for reset bit. > > Signed-off-by: Mesih Kilinc <mesihkilinc@gmail.com> > [ csokas.bence: Rebased and addressed comments ] > Signed-off-by: Csókás, Bence <csokas.bence@prolan.hu> > --- > > Notes: > Changes in v2: > * Call reset_control_deassert() unconditionally, as it supports optional resets > * Use dev_err_probe() > * Whitespace > Changes in v3: > * More dev_err_probe() You did not build v2. Then you send v3... which you also did not build. Please start at least compiling your own code. Then start testing it, but without building it cannot obviously be even tested. Best regards, Krzysztof
Hi, On 2024. 10. 27. 21:43, Krzysztof Kozlowski wrote: > You did not build v2. Then you send v3... which you also did not build. > > Please start at least compiling your own code. Then start testing it, > but without building it cannot obviously be even tested. I forgot to rebase an amend! before sending v2, which I corrected in v3. I *did* in fact build v3 (after the aforementioned correction) rebased on top of Linux 6.5, which is what I have available for my board. And I also *did* test with aplay and confirmed to have working audio. If you believe there are differences between 6.5 and master that break v3 of the patch, then please point those out as opposed to making accusations. Bence
On 28/10/2024 08:31, Csókás Bence wrote: > Hi, > > On 2024. 10. 27. 21:43, Krzysztof Kozlowski wrote: >> You did not build v2. Then you send v3... which you also did not build. >> >> Please start at least compiling your own code. Then start testing it, >> but without building it cannot obviously be even tested. > > I forgot to rebase an amend! before sending v2, which I corrected in v3. > I *did* in fact build v3 (after the aforementioned correction) rebased > on top of Linux 6.5, which is what I have available for my board. And I We cannot take patches based on v6.5. That's some close to ancient kernel nowadays. > also *did* test with aplay and confirmed to have working audio. If you > believe there are differences between 6.5 and master that break v3 of Yes, there are thousands of changes with possible impact. All your patches must be prepared on latest mainline tree. All your SoC code must be tested on *latest mainline tree*. > the patch, then please point those out as opposed to making accusations. First, your code does not build. Your code might not even apply. I do not have to point patches causing it, because your job is to work on mainline. But if you ask about patches causing issues, then I also do not have to go through 50 000 commits which could have possible impact, because you are supposed to work on mainline kernel. Best regards, Krzysztof
diff --git a/drivers/dma/sun4i-dma.c b/drivers/dma/sun4i-dma.c index d472f57a39ea..f485d6f378c0 100644 --- a/drivers/dma/sun4i-dma.c +++ b/drivers/dma/sun4i-dma.c @@ -15,6 +15,7 @@ #include <linux/of_dma.h> #include <linux/of_device.h> #include <linux/platform_device.h> +#include <linux/reset.h> #include <linux/slab.h> #include <linux/spinlock.h> @@ -159,6 +160,7 @@ struct sun4i_dma_config { u8 ddma_drq_sdram; u8 max_burst; + bool has_reset; }; struct sun4i_dma_pchan { @@ -208,6 +210,7 @@ struct sun4i_dma_dev { int irq; spinlock_t lock; const struct sun4i_dma_config *cfg; + struct reset_control *rst; }; static struct sun4i_dma_dev *to_sun4i_dma_dev(struct dma_device *dev) @@ -1215,6 +1218,16 @@ static int sun4i_dma_probe(struct platform_device *pdev) return PTR_ERR(priv->clk); } + if (priv->cfg->has_reset) { + priv->rst = devm_reset_control_get_exclusive(&pdev->dev, + NULL); + if (IS_ERR(priv->rst)) { + dev_err_probe(&pdev->dev, PTR_ERR(priv->rst), + "Failed to get reset control\n"); + return PTR_ERR(priv->rst); + } + } + platform_set_drvdata(pdev, priv); spin_lock_init(&priv->lock); @@ -1287,6 +1300,14 @@ static int sun4i_dma_probe(struct platform_device *pdev) return ret; } + /* Deassert the reset control */ + ret = reset_control_deassert(priv->rst); + if (ret) { + dev_err_probe(&pdev->dev, ret, + "Failed to deassert the reset control\n"); + goto err_clk_disable; + } + /* * Make sure the IRQs are all disabled and accounted for. The bootloader * likes to leave these dirty @@ -1356,6 +1377,7 @@ static struct sun4i_dma_config sun4i_a10_dma_cfg = { .ddma_drq_sdram = SUN4I_DDMA_DRQ_TYPE_SDRAM, .max_burst = SUN4I_MAX_BURST, + .has_reset = false, }; static const struct of_device_id sun4i_dma_match[] = {