[PATCH] kill include/linux/eeprom.h
This patch kills include/linux/eeprom.h . Rationale: - it was only used by one single driver - even this driver didn't do anything useful with it - most of this file are non-inline and non-static functions (sic) This removes include/linux/eeprom.h and cleans drivers/net/ns83820.c up. If you think eeprom.h should be used more extensively, please consider: - the code has to be moved from the header file to a .c file - the currently empty write function has to be implemented - ns83820.c or any other driver should actually use it Noone did any of these during the more than 3 years eeprom.h already exists... Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: John W. Linville <linville@tuxdriver.com>
This commit is contained in:
Adrian Bunk
John W. Linville
parent
8e3babcd69
commit
48888cc612
2 changed files with 2 additions and 147 deletions
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@ -110,7 +110,6 @@
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#include <linux/init.h>
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#include <linux/ip.h> /* for iph */
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#include <linux/in.h> /* for IPPROTO_... */
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#include <linux/eeprom.h>
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#include <linux/compiler.h>
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#include <linux/prefetch.h>
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#include <linux/ethtool.h>
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@ -445,7 +444,6 @@ struct ns83820 {
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u32 MEAR_cache;
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u32 IMR_cache;
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struct eeprom ee;
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unsigned linkstate;
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@ -1558,15 +1556,13 @@ static void ns83820_getmac(struct ns83820 *dev, u8 *mac)
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unsigned i;
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for (i=0; i<3; i++) {
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u32 data;
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#if 0 /* I've left this in as an example of how to use eeprom.h */
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data = eeprom_readw(&dev->ee, 0xa + 2 - i);
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#else
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/* Read from the perfect match memory: this is loaded by
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* the chip from the EEPROM via the EELOAD self test.
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*/
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writel(i*2, dev->base + RFCR);
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data = readl(dev->base + RFDR);
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#endif
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*mac++ = data;
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*mac++ = data >> 8;
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}
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@ -1851,8 +1847,6 @@ static int __devinit ns83820_init_one(struct pci_dev *pci_dev, const struct pci_
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spin_lock_init(&dev->misc_lock);
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dev->pci_dev = pci_dev;
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dev->ee.cache = &dev->MEAR_cache;
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dev->ee.lock = &dev->misc_lock;
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SET_MODULE_OWNER(ndev);
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SET_NETDEV_DEV(ndev, &pci_dev->dev);
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@ -1887,9 +1881,6 @@ static int __devinit ns83820_init_one(struct pci_dev *pci_dev, const struct pci_
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dev->IMR_cache = 0;
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setup_ee_mem_bitbanger(&dev->ee, dev->base + MEAR, 3, 2, 1, 0,
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0);
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err = request_irq(pci_dev->irq, ns83820_irq, SA_SHIRQ,
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DRV_NAME, ndev);
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if (err) {
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@ -1,136 +0,0 @@
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/* credit winbond-840.c
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*/
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#include <asm/io.h>
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struct eeprom_ops {
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void (*set_cs)(void *ee);
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void (*clear_cs)(void *ee);
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};
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#define EEPOL_EEDI 0x01
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#define EEPOL_EEDO 0x02
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#define EEPOL_EECLK 0x04
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#define EEPOL_EESEL 0x08
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struct eeprom {
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void *dev;
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struct eeprom_ops *ops;
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void __iomem * addr;
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unsigned ee_addr_bits;
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unsigned eesel;
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unsigned eeclk;
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unsigned eedo;
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unsigned eedi;
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unsigned polarity;
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unsigned ee_state;
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spinlock_t *lock;
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u32 *cache;
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};
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u8 eeprom_readb(struct eeprom *ee, unsigned address);
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void eeprom_read(struct eeprom *ee, unsigned address, u8 *bytes,
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unsigned count);
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void eeprom_writeb(struct eeprom *ee, unsigned address, u8 data);
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void eeprom_write(struct eeprom *ee, unsigned address, u8 *bytes,
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unsigned count);
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/* The EEPROM commands include the alway-set leading bit. */
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enum EEPROM_Cmds {
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EE_WriteCmd=(5 << 6), EE_ReadCmd=(6 << 6), EE_EraseCmd=(7 << 6),
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};
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void setup_ee_mem_bitbanger(struct eeprom *ee, void __iomem *memaddr, int eesel_bit, int eeclk_bit, int eedo_bit, int eedi_bit, unsigned polarity)
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{
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ee->addr = memaddr;
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ee->eesel = 1 << eesel_bit;
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ee->eeclk = 1 << eeclk_bit;
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ee->eedo = 1 << eedo_bit;
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ee->eedi = 1 << eedi_bit;
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ee->polarity = polarity;
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*ee->cache = readl(ee->addr);
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}
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/* foo. put this in a .c file */
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static inline void eeprom_update(struct eeprom *ee, u32 mask, int pol)
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{
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unsigned long flags;
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u32 data;
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spin_lock_irqsave(ee->lock, flags);
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data = *ee->cache;
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data &= ~mask;
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if (pol)
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data |= mask;
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*ee->cache = data;
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//printk("update: %08x\n", data);
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writel(data, ee->addr);
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spin_unlock_irqrestore(ee->lock, flags);
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}
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void eeprom_clk_lo(struct eeprom *ee)
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{
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int pol = !!(ee->polarity & EEPOL_EECLK);
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eeprom_update(ee, ee->eeclk, pol);
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udelay(2);
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}
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void eeprom_clk_hi(struct eeprom *ee)
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{
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int pol = !!(ee->polarity & EEPOL_EECLK);
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eeprom_update(ee, ee->eeclk, !pol);
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udelay(2);
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}
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void eeprom_send_addr(struct eeprom *ee, unsigned address)
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{
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int pol = !!(ee->polarity & EEPOL_EEDI);
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unsigned i;
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address |= 6 << 6;
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/* Shift the read command bits out. */
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for (i=0; i<11; i++) {
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eeprom_update(ee, ee->eedi, ((address >> 10) & 1) ^ pol);
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address <<= 1;
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eeprom_clk_hi(ee);
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eeprom_clk_lo(ee);
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}
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eeprom_update(ee, ee->eedi, pol);
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}
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u16 eeprom_readw(struct eeprom *ee, unsigned address)
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{
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unsigned i;
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u16 res = 0;
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eeprom_clk_lo(ee);
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eeprom_update(ee, ee->eesel, 1 ^ !!(ee->polarity & EEPOL_EESEL));
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eeprom_send_addr(ee, address);
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for (i=0; i<16; i++) {
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u32 data;
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eeprom_clk_hi(ee);
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res <<= 1;
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data = readl(ee->addr);
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//printk("eeprom_readw: %08x\n", data);
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res |= !!(data & ee->eedo) ^ !!(ee->polarity & EEPOL_EEDO);
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eeprom_clk_lo(ee);
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}
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eeprom_update(ee, ee->eesel, 0 ^ !!(ee->polarity & EEPOL_EESEL));
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return res;
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}
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void eeprom_writeb(struct eeprom *ee, unsigned address, u8 data)
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{
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}
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