Donate to e Foundation | Murena handsets with /e/OS | Own a part of Murena! Learn more

Commit 743485ea authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Mark Brown
Browse files

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: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 704d2b07

drivers/spi/spi-pxa2xx-pci.c

+44 −33
Original line number Diff line number Diff line
@@ -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;