From 3a14c66d43d018baed96ceb74f9ab548878c09b8 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko Date: Wed, 27 Apr 2016 14:15:40 +0300 Subject: [PATCH] dmaengine: dw: pass platform data via struct dw_dma_chip We pass struct dw_dma_chip to dw_dma_probe() anyway, thus we may use it to pass a platform data as well. While here, constify the source of the platform data. Acked-by: Viresh Kumar Signed-off-by: Andy Shevchenko Signed-off-by: Vinod Koul --- drivers/ata/sata_dwc_460ex.c | 2 +- drivers/dma/dw/core.c | 9 +++++---- drivers/dma/dw/pci.c | 5 +++-- drivers/dma/dw/platform.c | 5 +++-- include/linux/dma/dw.h | 5 ++++- sound/soc/intel/common/sst-firmware.c | 2 +- 6 files changed, 17 insertions(+), 11 deletions(-) diff --git a/drivers/ata/sata_dwc_460ex.c b/drivers/ata/sata_dwc_460ex.c index 80bdcabc293f..2cb6f7e04b5c 100644 --- a/drivers/ata/sata_dwc_460ex.c +++ b/drivers/ata/sata_dwc_460ex.c @@ -1248,7 +1248,7 @@ static int sata_dwc_probe(struct platform_device *ofdev) hsdev->dma->dev = &ofdev->dev; /* Initialize AHB DMAC */ - err = dw_dma_probe(hsdev->dma, NULL); + err = dw_dma_probe(hsdev->dma); if (err) goto error_dma_iomap; diff --git a/drivers/dma/dw/core.c b/drivers/dma/dw/core.c index 30843a17b438..edf053f73a49 100644 --- a/drivers/dma/dw/core.c +++ b/drivers/dma/dw/core.c @@ -1439,8 +1439,9 @@ EXPORT_SYMBOL(dw_dma_cyclic_free); /*----------------------------------------------------------------------*/ -int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata) +int dw_dma_probe(struct dw_dma_chip *chip) { + struct dw_dma_platform_data *pdata; struct dw_dma *dw; bool autocfg = false; unsigned int dw_params; @@ -1460,7 +1461,7 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata) pm_runtime_get_sync(chip->dev); - if (!pdata) { + if (!chip->pdata) { dw_params = dma_readl(dw, DW_PARAMS); dev_dbg(chip->dev, "DW_PARAMS: 0x%08x\n", dw_params); @@ -1487,11 +1488,11 @@ int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata) pdata->is_memcpy = true; pdata->chan_allocation_order = CHAN_ALLOCATION_ASCENDING; pdata->chan_priority = CHAN_PRIORITY_ASCENDING; - } else if (pdata->nr_channels > DW_DMA_MAX_NR_CHANNELS) { + } else if (chip->pdata->nr_channels > DW_DMA_MAX_NR_CHANNELS) { err = -EINVAL; goto err_pdata; } else { - memcpy(dw->pdata, pdata, sizeof(*dw->pdata)); + memcpy(dw->pdata, chip->pdata, sizeof(*dw->pdata)); /* Reassign the platform data pointer */ pdata = dw->pdata; diff --git a/drivers/dma/dw/pci.c b/drivers/dma/dw/pci.c index 358f9689a3f5..0ae6c3b1d34e 100644 --- a/drivers/dma/dw/pci.c +++ b/drivers/dma/dw/pci.c @@ -17,8 +17,8 @@ static int dw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid) { + const struct dw_dma_platform_data *pdata = (void *)pid->driver_data; struct dw_dma_chip *chip; - struct dw_dma_platform_data *pdata = (void *)pid->driver_data; int ret; ret = pcim_enable_device(pdev); @@ -49,8 +49,9 @@ static int dw_pci_probe(struct pci_dev *pdev, const struct pci_device_id *pid) chip->dev = &pdev->dev; chip->regs = pcim_iomap_table(pdev)[0]; chip->irq = pdev->irq; + chip->pdata = pdata; - ret = dw_dma_probe(chip, pdata); + ret = dw_dma_probe(chip); if (ret) return ret; diff --git a/drivers/dma/dw/platform.c b/drivers/dma/dw/platform.c index 0a49011633b9..5bda0eb9f393 100644 --- a/drivers/dma/dw/platform.c +++ b/drivers/dma/dw/platform.c @@ -161,7 +161,7 @@ static int dw_probe(struct platform_device *pdev) struct dw_dma_chip *chip; struct device *dev = &pdev->dev; struct resource *mem; - struct dw_dma_platform_data *pdata; + const struct dw_dma_platform_data *pdata; int err; chip = devm_kzalloc(dev, sizeof(*chip), GFP_KERNEL); @@ -186,6 +186,7 @@ static int dw_probe(struct platform_device *pdev) pdata = dw_dma_parse_dt(pdev); chip->dev = dev; + chip->pdata = pdata; chip->clk = devm_clk_get(chip->dev, "hclk"); if (IS_ERR(chip->clk)) @@ -196,7 +197,7 @@ static int dw_probe(struct platform_device *pdev) pm_runtime_enable(&pdev->dev); - err = dw_dma_probe(chip, pdata); + err = dw_dma_probe(chip); if (err) goto err_dw_dma_probe; diff --git a/include/linux/dma/dw.h b/include/linux/dma/dw.h index 71456442ebe3..f2e538aaddad 100644 --- a/include/linux/dma/dw.h +++ b/include/linux/dma/dw.h @@ -27,6 +27,7 @@ struct dw_dma; * @regs: memory mapped I/O space * @clk: hclk clock * @dw: struct dw_dma that is filed by dw_dma_probe() + * @pdata: pointer to platform data */ struct dw_dma_chip { struct device *dev; @@ -34,10 +35,12 @@ struct dw_dma_chip { void __iomem *regs; struct clk *clk; struct dw_dma *dw; + + const struct dw_dma_platform_data *pdata; }; /* Export to the platform drivers */ -int dw_dma_probe(struct dw_dma_chip *chip, struct dw_dma_platform_data *pdata); +int dw_dma_probe(struct dw_dma_chip *chip); int dw_dma_remove(struct dw_dma_chip *chip); /* DMA API extensions */ diff --git a/sound/soc/intel/common/sst-firmware.c b/sound/soc/intel/common/sst-firmware.c index ef4881e7753a..25993527370b 100644 --- a/sound/soc/intel/common/sst-firmware.c +++ b/sound/soc/intel/common/sst-firmware.c @@ -203,7 +203,7 @@ static struct dw_dma_chip *dw_probe(struct device *dev, struct resource *mem, chip->dev = dev; - err = dw_dma_probe(chip, NULL); + err = dw_dma_probe(chip); if (err) return ERR_PTR(err); -- 2.20.1