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Date: Mon, 02 Jun 2008 20:37:40 +0900
From: Magnus Damm <magnus.damm@...il.com>
To: netdev@...r.kernel.org
Cc: Magnus Damm <magnus.damm@...il.com>, lethal@...ux-sh.org,
akpm@...ux-foundation.org, jeff@...zik.org
Subject: [PATCH 04/05] 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@...l.co.jp>
---
drivers/net/smc911x.c | 17 +++++++++
drivers/net/smc911x.h | 81 +++++++++++++++++++++++++++++++++++++++++++++++
include/linux/smc911x.h | 12 ++++++
3 files changed, 109 insertions(+), 1 deletion(-)
--- 0004/drivers/net/smc911x.c
+++ work/drivers/net/smc911x.c 2008-06-02 18:34:05.000000000 +0900
@@ -1819,6 +1819,7 @@ static int __init smc911x_probe(struct n
int i, retval;
unsigned int val, chip_id, revision;
const char *version_string;
+ unsigned long irq_flags;
DBG(SMC_DEBUG_FUNC, "%s: --> %s\n", dev->name, __FUNCTION__);
@@ -1985,9 +1986,15 @@ static int __init smc911x_probe(struct n
lp->ctl_rfduplx = 1;
lp->ctl_rspeed = 100;
+#ifdef SMC_DYNAMIC_BUS_CONFIG
+ irq_flags = lp->cfg.irq_flags;
+#else
+ irq_flags = IRQF_SHARED | SMC_IRQ_SENSE;
+#endif
+
/* Grab the IRQ */
retval = request_irq(dev->irq, &smc911x_interrupt,
- IRQF_SHARED | SMC_IRQ_SENSE, dev->name, dev);
+ irq_flags, dev->name, dev);
if (retval)
goto err_out;
@@ -2057,6 +2064,7 @@ err_out:
*/
static int smc911x_drv_probe(struct platform_device *pdev)
{
+ struct smc91x_platdata *pd = pdev->dev.platform_data;
struct net_device *ndev;
struct resource *res;
struct smc911x_local *lp;
@@ -2090,6 +2098,13 @@ static int smc911x_drv_probe(struct plat
ndev->irq = platform_get_irq(pdev, 0);
lp = netdev_priv(ndev);
lp->netdev = ndev;
+#ifdef SMC_DYNAMIC_BUS_CONFIG
+ if (!pd) {
+ ret = -EINVAL;
+ goto release_both;
+ }
+ memcpy(&lp->cfg, pd, sizeof(lp->cfg));
+#endif
addr = ioremap(res->start, SMC911X_IO_EXTENT);
if (!addr) {
--- 0004/drivers/net/smc911x.h
+++ work/drivers/net/smc911x.h 2008-06-02 19:37:21.000000000 +0900
@@ -29,6 +29,7 @@
#ifndef _SMC911X_H_
#define _SMC911X_H_
+#include <linux/smc911x.h>
/*
* Use the DMA feature on PXA chips
*/
@@ -42,6 +43,12 @@
#define SMC_USE_16BIT 0
#define SMC_USE_32BIT 1
#define SMC_IRQ_SENSE IRQF_TRIGGER_LOW
+#else
+/*
+ * Default configuration
+ */
+
+#define SMC_DYNAMIC_BUS_CONFIG
#endif
/* store this information for the driver.. */
@@ -92,12 +99,84 @@ struct smc911x_local {
struct device *dev;
#endif
void __iomem *base;
+#ifdef SMC_DYNAMIC_BUS_CONFIG
+ struct smc911x_platdata cfg;
+#endif
};
/*
* Define the bus width specific IO macros
*/
+#ifdef SMC_DYNAMIC_BUS_CONFIG
+static inline unsigned int SMC_inl(struct smc911x_local *lp, int reg)
+{
+ void __iomem *ioaddr = lp->base + reg;
+
+ if (lp->cfg.flags & SMC911X_USE_32BIT)
+ return readl(ioaddr);
+
+ if (lp->cfg.flags & SMC911X_USE_16BIT)
+ return readw(ioaddr) | (readw(ioaddr + 2) << 16);
+
+ BUG();
+}
+
+static inline void SMC_outl(unsigned int value, struct smc911x_local *lp,
+ int reg)
+{
+ void __iomem *ioaddr = lp->base + reg;
+
+ if (lp->cfg.flags & SMC911X_USE_32BIT) {
+ writel(value, ioaddr);
+ return;
+ }
+
+ if (lp->cfg.flags & SMC911X_USE_16BIT) {
+ writew(value & 0xffff, ioaddr);
+ writew(value >> 16, ioaddr + 2);
+ return;
+ }
+
+ BUG();
+}
+
+static inline void SMC_insl(struct smc911x_local *lp, int reg,
+ void *addr, unsigned int count)
+{
+ void __iomem *ioaddr = lp->base + reg;
+
+ if (lp->cfg.flags & SMC911X_USE_32BIT) {
+ readsl(ioaddr, addr, count);
+ return;
+ }
+
+ if (lp->cfg.flags & SMC911X_USE_16BIT) {
+ readsw(ioaddr, addr, count * 2);
+ return;
+ }
+
+ BUG();
+}
+
+static inline void SMC_outsl(struct smc911x_local *lp, int reg,
+ void *addr, unsigned int count)
+{
+ void __iomem *ioaddr = lp->base + reg;
+
+ if (lp->cfg.flags & SMC911X_USE_32BIT) {
+ writesl(ioaddr, addr, count);
+ return;
+ }
+
+ if (lp->cfg.flags & SMC911X_USE_16BIT) {
+ writesw(ioaddr, addr, count * 2);
+ return;
+ }
+
+ BUG();
+}
+#else
#if SMC_USE_16BIT
#define SMC_inl(lp, r) (readw((lp)->base + (r)) & 0xFFFF) + (readw((lp)->base + (r) + 2) << 16))
#define SMC_outl(v, lp, r) \
@@ -115,6 +194,8 @@ struct smc911x_local {
#define SMC_outsl(lp, r, p, l) writesl((int*)((lp)->base + (r)), p, l)
#endif /* SMC_USE_16BIT */
+#endif /* SMC_DYNAMIC_BUS_CONFIG */
+
#ifdef SMC_USE_PXA_DMA
#define SMC_USE_DMA
--- /dev/null
+++ work/include/linux/smc911x.h 2008-06-02 18:34:05.000000000 +0900
@@ -0,0 +1,12 @@
+#ifndef __SMC911X_H__
+#define __SMC911X_H__
+
+#define SMC911X_USE_16BIT (1 << 0)
+#define SMC911X_USE_32BIT (1 << 1)
+
+struct smc911x_platdata {
+ unsigned long flags;
+ unsigned long irq_flags; /* IRQF_... */
+};
+
+#endif /* __SMC911X_H__ */
--
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