[ARM] Remove EEPROM slave emulation from i2c-pxa driver.

The i2c-pxa driver should not contain EEPROM slave-mode emulation;
this is something the platform should provide where required.  Remove
it.

Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

1 files changed, 1 insertions, 130 deletions

diff --git a/drivers/i2c/busses/i2c-pxa.c b/drivers/i2c/busses/i2c-pxa.c
index c95a6c154165..c3b1567c852a 100644
--- a/drivers/i2c/busses/i2c-pxa.c
+++ b/drivers/i2c/busses/i2c-pxa.c
@@ -358,133 +358,6 @@ static void i2c_pxa_reset(struct pxa_i2c *i2c)
 
 #ifdef CONFIG_I2C_PXA_SLAVE
 /*
- * I2C EEPROM emulation.
- */
-static struct i2c_eeprom_emu eeprom = {
-        .size = I2C_EEPROM_EMU_SIZE,
-        .watch = LIST_HEAD_INIT(eeprom.watch),
-};
-
-struct i2c_eeprom_emu *i2c_pxa_get_eeprom(void)
-{
-        return &eeprom;
-}
-
-int i2c_eeprom_emu_addwatcher(struct i2c_eeprom_emu *emu, void *data,
-                              unsigned int addr, unsigned int size,
-                              struct i2c_eeprom_emu_watcher *watcher)
-{
-        struct i2c_eeprom_emu_watch *watch;
-        unsigned long flags;
-
-        if (addr + size > emu->size)
-                return -EINVAL;
-
-        watch = kmalloc(sizeof(struct i2c_eeprom_emu_watch), GFP_KERNEL);
-        if (watch) {
-                watch->start = addr;
-                watch->end = addr + size - 1;
-                watch->ops = watcher;
-                watch->data = data;
-
-                local_irq_save(flags);
-                list_add(&watch->node, &emu->watch);
-                local_irq_restore(flags);
-        }
-
-        return watch ? 0 : -ENOMEM;
-}
-
-void i2c_eeprom_emu_delwatcher(struct i2c_eeprom_emu *emu, void *data,
-                               struct i2c_eeprom_emu_watcher *watcher)
-{
-        struct i2c_eeprom_emu_watch *watch, *n;
-        unsigned long flags;
-
-        list_for_each_entry_safe(watch, n, &emu->watch, node) {
-                if (watch->ops == watcher && watch->data == data) {
-                        local_irq_save(flags);
-                        list_del(&watch->node);
-                        local_irq_restore(flags);
-                        kfree(watch);
-                }
-        }
-}
-
-static void i2c_eeprom_emu_event(void *ptr, i2c_slave_event_t event)
-{
-        struct i2c_eeprom_emu *emu = ptr;
-
-        eedbg(3, "i2c_eeprom_emu_event: %d\n", event);
-
-        switch (event) {
-        case I2C_SLAVE_EVENT_START_WRITE:
-                emu->seen_start = 1;
-                eedbg(2, "i2c_eeprom: write initiated\n");
-                break;
-
-        case I2C_SLAVE_EVENT_START_READ:
-                emu->seen_start = 0;
-                eedbg(2, "i2c_eeprom: read initiated\n");
-                break;
-
-        case I2C_SLAVE_EVENT_STOP:
-                emu->seen_start = 0;
-                eedbg(2, "i2c_eeprom: received stop\n");
-                break;
-
-        default:
-                eedbg(0, "i2c_eeprom: unhandled event\n");
-                break;
-        }
-}
-
-static int i2c_eeprom_emu_read(void *ptr)
-{
-        struct i2c_eeprom_emu *emu = ptr;
-        int ret;
-
-        ret = emu->bytes[emu->ptr];
-        emu->ptr = (emu->ptr + 1) % emu->size;
-
-        return ret;
-}
-
-static void i2c_eeprom_emu_write(void *ptr, unsigned int val)
-{
-        struct i2c_eeprom_emu *emu = ptr;
-        struct i2c_eeprom_emu_watch *watch;
-
-        if (emu->seen_start != 0) {
-                eedbg(2, "i2c_eeprom_emu_write: setting ptr %02x\n", val);
-                emu->ptr = val;
-                emu->seen_start = 0;
-                return;
-        }
-
-        emu->bytes[emu->ptr] = val;
-
-        eedbg(1, "i2c_eeprom_emu_write: ptr=0x%02x, val=0x%02x\n",
-              emu->ptr, val);
-
-        list_for_each_entry(watch, &emu->watch, node) {
-                if (!watch->ops || !watch->ops->write)
-                        continue;
-                if (watch->start <= emu->ptr && watch->end >= emu->ptr)
-                        watch->ops->write(watch->data, emu->ptr, val);
-        }
-
-        emu->ptr = (emu->ptr + 1) % emu->size;
-}
-
-struct i2c_slave_client eeprom_client = {
-        .data   = &eeprom,
-        .event  = i2c_eeprom_emu_event,
-        .read   = i2c_eeprom_emu_read,
-        .write  = i2c_eeprom_emu_write
-};
-
-/*
  * PXA I2C Slave mode
  */
 
@@ -963,11 +836,9 @@ static int i2c_pxa_probe(struct platform_device *dev)
         i2c->slave_addr = I2C_PXA_SLAVE_ADDR;
 
 #ifdef CONFIG_I2C_PXA_SLAVE
-        i2c->slave = &eeprom_client;
         if (plat) {
                 i2c->slave_addr = plat->slave_addr;
-                if (plat->slave)
-                        i2c->slave = plat->slave;
+                i2c->slave = plat->slave;
         }
 #endif