Commit 3861841d authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Wolfram Sang

at24: enable ACPI device found on Galileo Gen2

There is a 24c08 chip connected to i2c bus on Intel Galileo Gen2 board. Enable
it via ACPI ID INT3499.
Signed-off-by: default avatarAndy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent 6ebe21c1
......@@ -21,6 +21,7 @@
#include <linux/bitops.h>
#include <linux/jiffies.h>
#include <linux/of.h>
#include <linux/acpi.h>
#include <linux/i2c.h>
#include <linux/platform_data/at24.h>
......@@ -131,6 +132,12 @@ static const struct i2c_device_id at24_ids[] = {
};
MODULE_DEVICE_TABLE(i2c, at24_ids);
static const struct acpi_device_id at24_acpi_ids[] = {
{ "INT3499", AT24_DEVICE_MAGIC(8192 / 8, 0) },
{ }
};
MODULE_DEVICE_TABLE(acpi, at24_acpi_ids);
/*-------------------------------------------------------------------------*/
/*
......@@ -467,21 +474,29 @@ static void at24_get_ofdata(struct i2c_client *client,
static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
{
struct at24_platform_data chip;
kernel_ulong_t magic = 0;
bool writable;
int use_smbus = 0;
int use_smbus_write = 0;
struct at24_data *at24;
int err;
unsigned i, num_addresses;
kernel_ulong_t magic;
if (client->dev.platform_data) {
chip = *(struct at24_platform_data *)client->dev.platform_data;
} else {
if (!id->driver_data)
if (id) {
magic = id->driver_data;
} else {
const struct acpi_device_id *aid;
aid = acpi_match_device(at24_acpi_ids, &client->dev);
if (aid)
magic = aid->driver_data;
}
if (!magic)
return -ENODEV;
magic = id->driver_data;
chip.byte_len = BIT(magic & AT24_BITMASK(AT24_SIZE_BYTELEN));
magic >>= AT24_SIZE_BYTELEN;
chip.flags = magic & AT24_BITMASK(AT24_SIZE_FLAGS);
......@@ -661,6 +676,7 @@ static int at24_remove(struct i2c_client *client)
static struct i2c_driver at24_driver = {
.driver = {
.name = "at24",
.acpi_match_table = ACPI_PTR(at24_acpi_ids),
},
.probe = at24_probe,
.remove = at24_remove,
......
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