The patch spi: pxa2xx-pci: Do a specific setup in a separate function has been applied to the spi tree at git://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted. You may get further e-mails resulting from automated or manual testing and review of the tree, please engage with people reporting problems and send followup patches addressing any issues that are reported if needed. If any updates are required or you are submitting further changes they should be sent as incremental updates against current git, existing patches will not be replaced. Please add any relevant lists and maintainers to the CCs when replying to this mail. Thanks, Mark >From 743485ea3bee852fa816a2ec6c64b3d500e39895 Mon Sep 17 00:00:00 2001 From: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Date: Mon, 4 Jul 2016 12:44:24 +0300 Subject: [PATCH] spi: pxa2xx-pci: Do a specific setup in a separate function Move LPSS specific setup to a separate function. It makes ->probe() cleaner as well as allows extend the driver for different variation of hardware in the future, e.g. for Intel Merrifield. Signed-off-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx> Signed-off-by: Mark Brown <broonie@xxxxxxxxxx> --- drivers/spi/spi-pxa2xx-pci.c | 77 +++++++++++++++++++++++++------------------- 1 file changed, 44 insertions(+), 33 deletions(-) diff --git a/drivers/spi/spi-pxa2xx-pci.c b/drivers/spi/spi-pxa2xx-pci.c index 5202de94f792..8d58598c325d 100644 --- a/drivers/spi/spi-pxa2xx-pci.c +++ b/drivers/spi/spi-pxa2xx-pci.c @@ -29,8 +29,11 @@ struct pxa_spi_info { unsigned long max_clk_rate; /* DMA channel request parameters */ + bool (*dma_filter)(struct dma_chan *chan, void *param); void *tx_param; void *rx_param; + + int (*setup)(struct pci_dev *pdev, struct pxa_spi_info *c); }; static struct dw_dma_slave byt_tx_param = { .dst_id = 0 }; @@ -57,6 +60,35 @@ static bool lpss_dma_filter(struct dma_chan *chan, void *param) return true; } +static int lpss_spi_setup(struct pci_dev *dev, struct pxa_spi_info *c) +{ + struct pci_dev *dma_dev; + + c->num_chipselect = 1; + c->max_clk_rate = 50000000; + + dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0)); + + if (c->tx_param) { + struct dw_dma_slave *slave = c->tx_param; + + slave->dma_dev = &dma_dev->dev; + slave->m_master = 0; + slave->p_master = 1; + } + + if (c->rx_param) { + struct dw_dma_slave *slave = c->rx_param; + + slave->dma_dev = &dma_dev->dev; + slave->m_master = 0; + slave->p_master = 1; + } + + c->dma_filter = lpss_dma_filter; + return 0; +} + static struct pxa_spi_info spi_info_configs[] = { [PORT_CE4100] = { .type = PXA25x_SSP, @@ -67,32 +99,28 @@ static struct pxa_spi_info spi_info_configs[] = { [PORT_BYT] = { .type = LPSS_BYT_SSP, .port_id = 0, - .num_chipselect = 1, - .max_clk_rate = 50000000, + .setup = lpss_spi_setup, .tx_param = &byt_tx_param, .rx_param = &byt_rx_param, }, [PORT_BSW0] = { .type = LPSS_BYT_SSP, .port_id = 0, - .num_chipselect = 1, - .max_clk_rate = 50000000, + .setup = lpss_spi_setup, .tx_param = &bsw0_tx_param, .rx_param = &bsw0_rx_param, }, [PORT_BSW1] = { .type = LPSS_BYT_SSP, .port_id = 1, - .num_chipselect = 1, - .max_clk_rate = 50000000, + .setup = lpss_spi_setup, .tx_param = &bsw1_tx_param, .rx_param = &bsw1_rx_param, }, [PORT_BSW2] = { .type = LPSS_BYT_SSP, .port_id = 2, - .num_chipselect = 1, - .max_clk_rate = 50000000, + .setup = lpss_spi_setup, .tx_param = &bsw2_tx_param, .rx_param = &bsw2_rx_param, }, @@ -105,8 +133,7 @@ static struct pxa_spi_info spi_info_configs[] = { [PORT_LPT] = { .type = LPSS_LPT_SSP, .port_id = 0, - .num_chipselect = 1, - .max_clk_rate = 50000000, + .setup = lpss_spi_setup, .tx_param = &lpt_tx_param, .rx_param = &lpt_rx_param, }, @@ -122,7 +149,6 @@ static int pxa2xx_spi_pci_probe(struct pci_dev *dev, struct ssp_device *ssp; struct pxa_spi_info *c; char buf[40]; - struct pci_dev *dma_dev; ret = pcim_enable_device(dev); if (ret) @@ -133,30 +159,15 @@ static int pxa2xx_spi_pci_probe(struct pci_dev *dev, return ret; c = &spi_info_configs[ent->driver_data]; - - memset(&spi_pdata, 0, sizeof(spi_pdata)); - spi_pdata.num_chipselect = (c->num_chipselect > 0) ? - c->num_chipselect : dev->devfn; - - dma_dev = pci_get_slot(dev->bus, PCI_DEVFN(PCI_SLOT(dev->devfn), 0)); - - if (c->tx_param) { - struct dw_dma_slave *slave = c->tx_param; - - slave->dma_dev = &dma_dev->dev; - slave->m_master = 0; - slave->p_master = 1; - } - - if (c->rx_param) { - struct dw_dma_slave *slave = c->rx_param; - - slave->dma_dev = &dma_dev->dev; - slave->m_master = 0; - slave->p_master = 1; + if (c->setup) { + ret = c->setup(dev, c); + if (ret) + return ret; } - spi_pdata.dma_filter = lpss_dma_filter; + memset(&spi_pdata, 0, sizeof(spi_pdata)); + spi_pdata.num_chipselect = (c->num_chipselect > 0) ? c->num_chipselect : dev->devfn; + spi_pdata.dma_filter = c->dma_filter; spi_pdata.tx_param = c->tx_param; spi_pdata.rx_param = c->rx_param; spi_pdata.enable_dma = c->rx_param && c->tx_param; -- 2.8.1 -- To unsubscribe from this list: send the line "unsubscribe linux-spi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html