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Commit 40d8edc9 authored by Andy Shevchenko's avatar Andy Shevchenko Committed by Wolfram Sang
Browse files

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 918fe70c

drivers/misc/eeprom/at24.c

+19 −3
Original line number Diff line number Diff line
@@ -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,