This patch kills include/linux/eeprom.h .
Rationale:
- it's only used by one single driver
- most of this file are non-inline and non-static functions (sic)
This patch moves all required contents of this file into ns83820.c and
removes include/linux/eeprom.h (and makes setup_ee_mem_bitbanger
static).
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
- even ns83820.c used only one of the 7 functions in eeprom.h
Noone did any of these during the more than 3 years eeprom.h already
exists...
Signed-off-by: Adrian Bunk <bunk@xxxxxxxxx>
---
This patch was already sent on:
- 17 Feb 2005
drivers/net/ns83820.c | 49 +++++++++++++-
include/linux/eeprom.h | 136 -----------------------------------------
2 files changed, 44 insertions(+), 141 deletions(-)
--- linux-2.6.11-rc3-mm2-full/include/linux/eeprom.h 2004-12-24 22:33:49.000000000 +0100
+++ /dev/null 2004-11-25 03:16:25.000000000 +0100
@@ -1,136 +0,0 @@
-/* credit winbond-840.c
- */
-#include <asm/io.h>
-struct eeprom_ops {
- void (*set_cs)(void *ee);
- void (*clear_cs)(void *ee);
-};
-
-#define EEPOL_EEDI 0x01
-#define EEPOL_EEDO 0x02
-#define EEPOL_EECLK 0x04
-#define EEPOL_EESEL 0x08
-
-struct eeprom {
- void *dev;
- struct eeprom_ops *ops;
-
- void __iomem * addr;
-
- unsigned ee_addr_bits;
-
- unsigned eesel;
- unsigned eeclk;
- unsigned eedo;
- unsigned eedi;
- unsigned polarity;
- unsigned ee_state;
-
- spinlock_t *lock;
- u32 *cache;
-};
-
-
-u8 eeprom_readb(struct eeprom *ee, unsigned address);
-void eeprom_read(struct eeprom *ee, unsigned address, u8 *bytes,
- unsigned count);
-void eeprom_writeb(struct eeprom *ee, unsigned address, u8 data);
-void eeprom_write(struct eeprom *ee, unsigned address, u8 *bytes,
- unsigned count);
-
-/* The EEPROM commands include the alway-set leading bit. */
-enum EEPROM_Cmds {
- EE_WriteCmd=(5 << 6), EE_ReadCmd=(6 << 6), EE_EraseCmd=(7 << 6),
-};
-
-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)
-{
- ee->addr = memaddr;
- ee->eesel = 1 << eesel_bit;
- ee->eeclk = 1 << eeclk_bit;
- ee->eedo = 1 << eedo_bit;
- ee->eedi = 1 << eedi_bit;
-
- ee->polarity = polarity;
-
- *ee->cache = readl(ee->addr);
-}
-
-/* foo. put this in a .c file */
-static inline void eeprom_update(struct eeprom *ee, u32 mask, int pol)
-{
- unsigned long flags;
- u32 data;
-
- spin_lock_irqsave(ee->lock, flags);
- data = *ee->cache;
-
- data &= ~mask;
- if (pol)
- data |= mask;
-
- *ee->cache = data;
-//printk("update: %08x\n", data);
- writel(data, ee->addr);
- spin_unlock_irqrestore(ee->lock, flags);
-}
-
-void eeprom_clk_lo(struct eeprom *ee)
-{
- int pol = !!(ee->polarity & EEPOL_EECLK);
-
- eeprom_update(ee, ee->eeclk, pol);
- udelay(2);
-}
-
-void eeprom_clk_hi(struct eeprom *ee)
-{
- int pol = !!(ee->polarity & EEPOL_EECLK);
-
- eeprom_update(ee, ee->eeclk, !pol);
- udelay(2);
-}
-
-void eeprom_send_addr(struct eeprom *ee, unsigned address)
-{
- int pol = !!(ee->polarity & EEPOL_EEDI);
- unsigned i;
- address |= 6 << 6;
-
- /* Shift the read command bits out. */
- for (i=0; i<11; i++) {
- eeprom_update(ee, ee->eedi, ((address >> 10) & 1) ^ pol);
- address <<= 1;
- eeprom_clk_hi(ee);
- eeprom_clk_lo(ee);
- }
- eeprom_update(ee, ee->eedi, pol);
-}
-
-u16 eeprom_readw(struct eeprom *ee, unsigned address)
-{
- unsigned i;
- u16 res = 0;
-
- eeprom_clk_lo(ee);
- eeprom_update(ee, ee->eesel, 1 ^ !!(ee->polarity & EEPOL_EESEL));
- eeprom_send_addr(ee, address);
-
- for (i=0; i<16; i++) {
- u32 data;
- eeprom_clk_hi(ee);
- res <<= 1;
- data = readl(ee->addr);
-//printk("eeprom_readw: %08x\n", data);
- res |= !!(data & ee->eedo) ^ !!(ee->polarity & EEPOL_EEDO);
- eeprom_clk_lo(ee);
- }
- eeprom_update(ee, ee->eesel, 0 ^ !!(ee->polarity & EEPOL_EESEL));
-
- return res;
-}
-
-
-void eeprom_writeb(struct eeprom *ee, unsigned address, u8 data)
-{
-}
--- linux-2.6.11-rc3-mm2-full/drivers/net/ns83820.c.old 2005-02-16 17:52:43.000000000 +0100
+++ linux-2.6.11-rc3-mm2-full/drivers/net/ns83820.c 2005-02-16 18:05:26.000000000 +0100
@@ -107,7 +107,6 @@
#include <linux/init.h>
#include <linux/ip.h> /* for iph */
#include <linux/in.h> /* for IPPROTO_... */
-#include <linux/eeprom.h>
#include <linux/compiler.h>
#include <linux/prefetch.h>
#include <linux/ethtool.h>
@@ -422,6 +421,35 @@
#define DESC_SIZE 8 /* Should be cache line sized */
+struct eeprom_ops {
+ void (*set_cs)(void *ee);
+ void (*clear_cs)(void *ee);
+};
+
+#define EEPOL_EEDI 0x01
+#define EEPOL_EEDO 0x02
+#define EEPOL_EECLK 0x04
+#define EEPOL_EESEL 0x08
+
+struct eeprom {
+ void *dev;
+ struct eeprom_ops *ops;
+
+ void __iomem * addr;
+
+ unsigned ee_addr_bits;
+
+ unsigned eesel;
+ unsigned eeclk;
+ unsigned eedo;
+ unsigned eedi;
+ unsigned polarity;
+ unsigned ee_state;
+
+ spinlock_t *lock;
+ u32 *cache;
+};
+
struct rx_info {
spinlock_t lock;
int up;
@@ -481,6 +509,21 @@
struct timer_list tx_watchdog;
};
+static 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)
+{
+ ee->addr = memaddr;
+ ee->eesel = 1 << eesel_bit;
+ ee->eeclk = 1 << eeclk_bit;
+ ee->eedo = 1 << eedo_bit;
+ ee->eedi = 1 << eedi_bit;
+
+ ee->polarity = polarity;
+
+ *ee->cache = readl(ee->addr);
+}
+
static inline struct ns83820 *PRIV(struct net_device *dev)
{
return netdev_priv(dev);
@@ -1568,15 +1611,11 @@
unsigned i;
for (i=0; i<3; i++) {
u32 data;
-#if 0 /* I've left this in as an example of how to use eeprom.h */
- data = eeprom_readw(&dev->ee, 0xa + 2 - i);
-#else
/* Read from the perfect match memory: this is loaded by
* the chip from the EEPROM via the EELOAD self test.
*/
writel(i*2, dev->base + RFCR);
data = readl(dev->base + RFDR);
-#endif
*mac++ = data;
*mac++ = data >> 8;
}
-
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