From 3e94794355724f77dc6cbb5ad956f7c72d8313a4 Mon Sep 17 00:00:00 2001 From: Magnus Damm Date: Fri, 22 Feb 2008 19:55:15 +0900 Subject: [PATCH] smc91x: introduce platform data flags V2 This patch introduces struct smc91x_platdata and modifies the driver so bus width is checked during run time using SMC_nBIT() instead of SMC_CAN_USE_nBIT. V2 keeps static configuration lean using SMC_DYNAMIC_BUS_CONFIG. Signed-off-by: Magnus Damm Acked-by: Nicolas Pitre Signed-off-by: Jeff Garzik --- drivers/net/smc91x.c | 34 +++++++++++++++++++++---- drivers/net/smc91x.h | 57 ++++++++++++++++++++++++++---------------- include/linux/smc91x.h | 13 ++++++++++ 3 files changed, 77 insertions(+), 27 deletions(-) create mode 100644 include/linux/smc91x.h diff --git a/drivers/net/smc91x.c b/drivers/net/smc91x.c index d0ef80ae018a..97bdb2a43bc8 100644 --- a/drivers/net/smc91x.c +++ b/drivers/net/smc91x.c @@ -1997,6 +1997,8 @@ err_out: static int smc_enable_device(struct platform_device *pdev) { + struct net_device *ndev = platform_get_drvdata(pdev); + struct smc_local *lp = netdev_priv(ndev); unsigned long flags; unsigned char ecor, ecsr; void __iomem *addr; @@ -2039,7 +2041,7 @@ static int smc_enable_device(struct platform_device *pdev) * Set the appropriate byte/word mode. */ ecsr = readb(addr + (ECSR << SMC_IO_SHIFT)) & ~ECSR_IOIS8; - if (!SMC_CAN_USE_16BIT) + if (!SMC_16BIT(lp)) ecsr |= ECSR_IOIS8; writeb(ecsr, addr + (ECSR << SMC_IO_SHIFT)); local_irq_restore(flags); @@ -2124,10 +2126,11 @@ static void smc_release_datacs(struct platform_device *pdev, struct net_device * */ static int smc_drv_probe(struct platform_device *pdev) { + struct smc91x_platdata *pd = pdev->dev.platform_data; + struct smc_local *lp; struct net_device *ndev; struct resource *res, *ires; unsigned int __iomem *addr; - unsigned long irq_flags = SMC_IRQ_FLAGS; int ret; res = platform_get_resource_byname(pdev, IORESOURCE_MEM, "smc91x-regs"); @@ -2152,6 +2155,27 @@ static int smc_drv_probe(struct platform_device *pdev) } SET_NETDEV_DEV(ndev, &pdev->dev); + /* get configuration from platform data, only allow use of + * bus width if both SMC_CAN_USE_xxx and SMC91X_USE_xxx are set. + */ + + lp = netdev_priv(ndev); + lp->cfg.irq_flags = SMC_IRQ_FLAGS; + +#ifdef SMC_DYNAMIC_BUS_CONFIG + if (pd) + memcpy(&lp->cfg, pd, sizeof(lp->cfg)); + else { + lp->cfg.flags = SMC91X_USE_8BIT; + lp->cfg.flags |= SMC91X_USE_16BIT; + lp->cfg.flags |= SMC91X_USE_32BIT; + } + + lp->cfg.flags &= ~(SMC_CAN_USE_8BIT ? 0 : SMC91X_USE_8BIT); + lp->cfg.flags &= ~(SMC_CAN_USE_16BIT ? 0 : SMC91X_USE_16BIT); + lp->cfg.flags &= ~(SMC_CAN_USE_32BIT ? 0 : SMC91X_USE_32BIT); +#endif + ndev->dma = (unsigned char)-1; ires = platform_get_resource(pdev, IORESOURCE_IRQ, 0); @@ -2162,7 +2186,7 @@ static int smc_drv_probe(struct platform_device *pdev) ndev->irq = ires->start; if (SMC_IRQ_FLAGS == -1) - irq_flags = ires->flags & IRQF_TRIGGER_MASK; + lp->cfg.irq_flags = ires->flags & IRQF_TRIGGER_MASK; ret = smc_request_attrib(pdev); if (ret) @@ -2170,6 +2194,7 @@ static int smc_drv_probe(struct platform_device *pdev) #if defined(CONFIG_SA1100_ASSABET) NCR_0 |= NCR_ENET_OSC_EN; #endif + platform_set_drvdata(pdev, ndev); ret = smc_enable_device(pdev); if (ret) goto out_release_attrib; @@ -2188,8 +2213,7 @@ static int smc_drv_probe(struct platform_device *pdev) } #endif - platform_set_drvdata(pdev, ndev); - ret = smc_probe(ndev, addr, irq_flags); + ret = smc_probe(ndev, addr, lp->cfg.irq_flags); if (ret != 0) goto out_iounmap; diff --git a/drivers/net/smc91x.h b/drivers/net/smc91x.h index 92ff9c42367e..e044b4de1397 100644 --- a/drivers/net/smc91x.h +++ b/drivers/net/smc91x.h @@ -34,6 +34,7 @@ #ifndef _SMC91X_H_ #define _SMC91X_H_ +#include /* * Define your architecture specific bus configuration parameters here. @@ -481,6 +482,7 @@ static inline void LPD7_SMC_outsw (unsigned char* a, int r, #define RPC_LSA_DEFAULT RPC_LED_100_10 #define RPC_LSB_DEFAULT RPC_LED_TX_RX +#define SMC_DYNAMIC_BUS_CONFIG #endif @@ -526,8 +528,19 @@ struct smc_local { #endif void __iomem *base; void __iomem *datacs; + + struct smc91x_platdata cfg; }; +#ifdef SMC_DYNAMIC_BUS_CONFIG +#define SMC_8BIT(p) (((p)->cfg.flags & SMC91X_USE_8BIT) && SMC_CAN_USE_8BIT) +#define SMC_16BIT(p) (((p)->cfg.flags & SMC91X_USE_16BIT) && SMC_CAN_USE_16BIT) +#define SMC_32BIT(p) (((p)->cfg.flags & SMC91X_USE_32BIT) && SMC_CAN_USE_32BIT) +#else +#define SMC_8BIT(p) SMC_CAN_USE_8BIT +#define SMC_16BIT(p) SMC_CAN_USE_16BIT +#define SMC_32BIT(p) SMC_CAN_USE_32BIT +#endif #ifdef SMC_USE_PXA_DMA /* @@ -1108,41 +1121,41 @@ static const char * chip_ids[ 16 ] = { * * Enforce it on any 32-bit capable setup for now. */ -#define SMC_MUST_ALIGN_WRITE SMC_CAN_USE_32BIT +#define SMC_MUST_ALIGN_WRITE(lp) SMC_32BIT(lp) #define SMC_GET_PN(lp) \ - (SMC_CAN_USE_8BIT ? (SMC_inb(ioaddr, PN_REG(lp))) \ + (SMC_8BIT(lp) ? (SMC_inb(ioaddr, PN_REG(lp))) \ : (SMC_inw(ioaddr, PN_REG(lp)) & 0xFF)) #define SMC_SET_PN(lp, x) \ do { \ - if (SMC_MUST_ALIGN_WRITE) \ + if (SMC_MUST_ALIGN_WRITE(lp)) \ SMC_outl((x)<<16, ioaddr, SMC_REG(lp, 0, 2)); \ - else if (SMC_CAN_USE_8BIT) \ + else if (SMC_8BIT(lp)) \ SMC_outb(x, ioaddr, PN_REG(lp)); \ else \ SMC_outw(x, ioaddr, PN_REG(lp)); \ } while (0) #define SMC_GET_AR(lp) \ - (SMC_CAN_USE_8BIT ? (SMC_inb(ioaddr, AR_REG(lp))) \ + (SMC_8BIT(lp) ? (SMC_inb(ioaddr, AR_REG(lp))) \ : (SMC_inw(ioaddr, PN_REG(lp)) >> 8)) #define SMC_GET_TXFIFO(lp) \ - (SMC_CAN_USE_8BIT ? (SMC_inb(ioaddr, TXFIFO_REG(lp))) \ + (SMC_8BIT(lp) ? (SMC_inb(ioaddr, TXFIFO_REG(lp))) \ : (SMC_inw(ioaddr, TXFIFO_REG(lp)) & 0xFF)) #define SMC_GET_RXFIFO(lp) \ - (SMC_CAN_USE_8BIT ? (SMC_inb(ioaddr, RXFIFO_REG(lp))) \ + (SMC_8BIT(lp) ? (SMC_inb(ioaddr, RXFIFO_REG(lp))) \ : (SMC_inw(ioaddr, TXFIFO_REG(lp)) >> 8)) #define SMC_GET_INT(lp) \ - (SMC_CAN_USE_8BIT ? (SMC_inb(ioaddr, INT_REG(lp))) \ + (SMC_8BIT(lp) ? (SMC_inb(ioaddr, INT_REG(lp))) \ : (SMC_inw(ioaddr, INT_REG(lp)) & 0xFF)) #define SMC_ACK_INT(lp, x) \ do { \ - if (SMC_CAN_USE_8BIT) \ + if (SMC_8BIT(lp)) \ SMC_outb(x, ioaddr, INT_REG(lp)); \ else { \ unsigned long __flags; \ @@ -1155,12 +1168,12 @@ static const char * chip_ids[ 16 ] = { } while (0) #define SMC_GET_INT_MASK(lp) \ - (SMC_CAN_USE_8BIT ? (SMC_inb(ioaddr, IM_REG(lp))) \ + (SMC_8BIT(lp) ? (SMC_inb(ioaddr, IM_REG(lp))) \ : (SMC_inw(ioaddr, INT_REG(lp)) >> 8)) #define SMC_SET_INT_MASK(lp, x) \ do { \ - if (SMC_CAN_USE_8BIT) \ + if (SMC_8BIT(lp)) \ SMC_outb(x, ioaddr, IM_REG(lp)); \ else \ SMC_outw((x) << 8, ioaddr, INT_REG(lp)); \ @@ -1170,7 +1183,7 @@ static const char * chip_ids[ 16 ] = { #define SMC_SELECT_BANK(lp, x) \ do { \ - if (SMC_MUST_ALIGN_WRITE) \ + if (SMC_MUST_ALIGN_WRITE(lp)) \ SMC_outl((x)<<16, ioaddr, 12<> 16; \ @@ -1290,7 +1303,7 @@ static const char * chip_ids[ 16 ] = { #define SMC_PUSH_DATA(lp, p, l) \ do { \ - if (SMC_CAN_USE_32BIT) { \ + if (SMC_32BIT(lp)) { \ void *__ptr = (p); \ int __len = (l); \ void __iomem *__ioaddr = ioaddr; \ @@ -1308,15 +1321,15 @@ static const char * chip_ids[ 16 ] = { SMC_outw(*((u16 *)__ptr), ioaddr, \ DATA_REG(lp)); \ } \ - } else if (SMC_CAN_USE_16BIT) \ + } else if (SMC_16BIT(lp)) \ SMC_outsw(ioaddr, DATA_REG(lp), p, (l) >> 1); \ - else if (SMC_CAN_USE_8BIT) \ + else if (SMC_8BIT(lp)) \ SMC_outsb(ioaddr, DATA_REG(lp), p, l); \ } while (0) #define SMC_PULL_DATA(lp, p, l) \ do { \ - if (SMC_CAN_USE_32BIT) { \ + if (SMC_32BIT(lp)) { \ void *__ptr = (p); \ int __len = (l); \ void __iomem *__ioaddr = ioaddr; \ @@ -1343,9 +1356,9 @@ static const char * chip_ids[ 16 ] = { __ioaddr = lp->datacs; \ __len += 2; \ SMC_insl(__ioaddr, DATA_REG(lp), __ptr, __len>>2); \ - } else if (SMC_CAN_USE_16BIT) \ + } else if (SMC_16BIT(lp)) \ SMC_insw(ioaddr, DATA_REG(lp), p, (l) >> 1); \ - else if (SMC_CAN_USE_8BIT) \ + else if (SMC_8BIT(lp)) \ SMC_insb(ioaddr, DATA_REG(lp), p, l); \ } while (0) diff --git a/include/linux/smc91x.h b/include/linux/smc91x.h new file mode 100644 index 000000000000..8e0556b8781c --- /dev/null +++ b/include/linux/smc91x.h @@ -0,0 +1,13 @@ +#ifndef __SMC91X_H__ +#define __SMC91X_H__ + +#define SMC91X_USE_8BIT (1 << 0) +#define SMC91X_USE_16BIT (1 << 1) +#define SMC91X_USE_32BIT (1 << 2) + +struct smc91x_platdata { + unsigned long flags; + unsigned long irq_flags; /* IRQF_... */ +}; + +#endif /* __SMC91X_H__ */ -- 2.20.1