smc911x: introduce platform data flags
This patch adds a new header file for platform data information together with code that adds run time bus width and irq flag support. Signed-off-by: Magnus Damm <damm@igel.co.jp> Cc: Jeff Garzik <jeff@garzik.org> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Jeff Garzik <jgarzik@redhat.com>
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699559f84b
Коммит
12c03f59c3
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@ -1819,6 +1819,7 @@ static int __init smc911x_probe(struct net_device *dev)
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int i, retval;
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unsigned int val, chip_id, revision;
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const char *version_string;
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unsigned long irq_flags;
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DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__);
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@ -1985,9 +1986,15 @@ static int __init smc911x_probe(struct net_device *dev)
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lp->ctl_rfduplx = 1;
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lp->ctl_rspeed = 100;
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#ifdef SMC_DYNAMIC_BUS_CONFIG
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irq_flags = lp->cfg.irq_flags;
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#else
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irq_flags = IRQF_SHARED | SMC_IRQ_SENSE;
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#endif
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/* Grab the IRQ */
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retval = request_irq(dev->irq, &smc911x_interrupt,
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IRQF_SHARED | SMC_IRQ_SENSE, dev->name, dev);
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irq_flags, dev->name, dev);
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if (retval)
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goto err_out;
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@ -2057,6 +2064,7 @@ err_out:
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*/
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static int smc911x_drv_probe(struct platform_device *pdev)
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{
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struct smc91x_platdata *pd = pdev->dev.platform_data;
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struct net_device *ndev;
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struct resource *res;
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struct smc911x_local *lp;
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@ -2090,6 +2098,13 @@ static int smc911x_drv_probe(struct platform_device *pdev)
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ndev->irq = platform_get_irq(pdev, 0);
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lp = netdev_priv(ndev);
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lp->netdev = ndev;
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#ifdef SMC_DYNAMIC_BUS_CONFIG
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if (!pd) {
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ret = -EINVAL;
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goto release_both;
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}
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memcpy(&lp->cfg, pd, sizeof(lp->cfg));
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#endif
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addr = ioremap(res->start, SMC911X_IO_EXTENT);
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if (!addr) {
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@ -29,6 +29,7 @@
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#ifndef _SMC911X_H_
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#define _SMC911X_H_
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#include <linux/smc911x.h>
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/*
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* Use the DMA feature on PXA chips
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*/
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@ -42,6 +43,12 @@
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#define SMC_USE_16BIT 0
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#define SMC_USE_32BIT 1
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#define SMC_IRQ_SENSE IRQF_TRIGGER_LOW
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#else
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/*
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* Default configuration
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*/
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#define SMC_DYNAMIC_BUS_CONFIG
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#endif
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/* store this information for the driver.. */
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@ -92,12 +99,84 @@ struct smc911x_local {
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struct device *dev;
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#endif
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void __iomem *base;
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#ifdef SMC_DYNAMIC_BUS_CONFIG
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struct smc911x_platdata cfg;
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#endif
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};
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/*
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* Define the bus width specific IO macros
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*/
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#ifdef SMC_DYNAMIC_BUS_CONFIG
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static inline unsigned int SMC_inl(struct smc911x_local *lp, int reg)
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{
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void __iomem *ioaddr = lp->base + reg;
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if (lp->cfg.flags & SMC911X_USE_32BIT)
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return readl(ioaddr);
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if (lp->cfg.flags & SMC911X_USE_16BIT)
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return readw(ioaddr) | (readw(ioaddr + 2) << 16);
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BUG();
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}
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static inline void SMC_outl(unsigned int value, struct smc911x_local *lp,
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int reg)
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{
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void __iomem *ioaddr = lp->base + reg;
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if (lp->cfg.flags & SMC911X_USE_32BIT) {
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writel(value, ioaddr);
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return;
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}
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if (lp->cfg.flags & SMC911X_USE_16BIT) {
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writew(value & 0xffff, ioaddr);
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writew(value >> 16, ioaddr + 2);
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return;
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}
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BUG();
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}
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static inline void SMC_insl(struct smc911x_local *lp, int reg,
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void *addr, unsigned int count)
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{
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void __iomem *ioaddr = lp->base + reg;
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if (lp->cfg.flags & SMC911X_USE_32BIT) {
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readsl(ioaddr, addr, count);
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return;
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}
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if (lp->cfg.flags & SMC911X_USE_16BIT) {
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readsw(ioaddr, addr, count * 2);
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return;
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}
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BUG();
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}
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static inline void SMC_outsl(struct smc911x_local *lp, int reg,
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void *addr, unsigned int count)
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{
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void __iomem *ioaddr = lp->base + reg;
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if (lp->cfg.flags & SMC911X_USE_32BIT) {
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writesl(ioaddr, addr, count);
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return;
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}
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if (lp->cfg.flags & SMC911X_USE_16BIT) {
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writesw(ioaddr, addr, count * 2);
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return;
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}
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BUG();
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}
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#else
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#if SMC_USE_16BIT
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#define SMC_inl(lp, r) ((readw((lp)->base + (r)) & 0xFFFF) + (readw((lp)->base + (r) + 2) << 16))
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#define SMC_outl(v, lp, r) \
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@ -115,6 +194,8 @@ struct smc911x_local {
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#define SMC_outsl(lp, r, p, l) writesl((int*)((lp)->base + (r)), p, l)
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#endif /* SMC_USE_16BIT */
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#endif /* SMC_DYNAMIC_BUS_CONFIG */
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#ifdef SMC_USE_PXA_DMA
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#define SMC_USE_DMA
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@ -0,0 +1,12 @@
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#ifndef __SMC911X_H__
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#define __SMC911X_H__
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#define SMC911X_USE_16BIT (1 << 0)
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#define SMC911X_USE_32BIT (1 << 1)
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struct smc911x_platdata {
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unsigned long flags;
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unsigned long irq_flags; /* IRQF_... */
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};
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#endif /* __SMC911X_H__ */
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