summaryrefslogtreecommitdiff
path: root/packages/linux/linux-2.6.26/boc01/006-081105-at24c32.patch
diff options
context:
space:
mode:
Diffstat (limited to 'packages/linux/linux-2.6.26/boc01/006-081105-at24c32.patch')
-rw-r--r--packages/linux/linux-2.6.26/boc01/006-081105-at24c32.patch284
1 files changed, 0 insertions, 284 deletions
diff --git a/packages/linux/linux-2.6.26/boc01/006-081105-at24c32.patch b/packages/linux/linux-2.6.26/boc01/006-081105-at24c32.patch
deleted file mode 100644
index 1cd70feb4a..0000000000
--- a/packages/linux/linux-2.6.26/boc01/006-081105-at24c32.patch
+++ /dev/null
@@ -1,284 +0,0 @@
-diff -Nru linux-2.6.26-officiel/drivers/i2c/chips/at24c32.c /home/guilig/workspace/kernel-goobie-2.6.26/src/drivers/i2c/chips/at24c32.c
---- linux-2.6.26-officiel/drivers/i2c/chips/at24c32.c 1970-01-01 01:00:00.000000000 +0100
-+++ /home/guilig/workspace/kernel-goobie-2.6.26/src/drivers/i2c/chips/at24c32.c 2008-11-06 10:45:30.000000000 +0100
-@@ -0,0 +1,268 @@
-+/*
-+ * at24c32.c - Based on eeprom.c
-+ *
-+ * Copyright (C) 2007, CenoSYS (www.cenosys.com).
-+ * Guillaume Ligneul
-+ * Guillaume.ligneul@gmail.com
-+ *
-+ * Code is based on eeprom.c
-+ *
-+ * This software program is licensed subject to the GNU General Public License
-+ * (GPL).Version 2,June 1991, available at http://www.fsf.org/copyleft/gpl.html
-+ */
-+
-+#include <linux/kernel.h>
-+#include <linux/init.h>
-+#include <linux/module.h>
-+#include <linux/slab.h>
-+#include <linux/jiffies.h>
-+#include <linux/i2c.h>
-+#include <linux/mutex.h>
-+
-+/* Addresses to scan */
-+static const unsigned short normal_i2c[] = { 0x50, 0x51, 0x52, 0x53, 0x54,
-+ 0x55, 0x56, I2C_CLIENT_END };
-+
-+/* Insmod parameters */
-+I2C_CLIENT_INSMOD_1(eeprom);
-+
-+
-+/* Size of EEPROM in bytes */
-+#define EEPROM_SIZE 32768
-+
-+/* possible types of eeprom devices */
-+enum eeprom_nature {
-+ UNKNOWN,
-+ VAIO,
-+};
-+
-+/* Each client has this additional data */
-+struct eeprom_data {
-+ struct i2c_client client;
-+ struct mutex update_lock;
-+ u8 valid; /* bitfield, bit!=0 if slice is valid */
-+ unsigned long last_updated[8]; /* In jiffies, 8 slices */
-+ u8 data[EEPROM_SIZE]; /* Register values */
-+ enum eeprom_nature nature;
-+};
-+
-+
-+static int eeprom_attach_adapter(struct i2c_adapter *adapter);
-+static int eeprom_detect(struct i2c_adapter *adapter, int address, int kind);
-+static int eeprom_detach_client(struct i2c_client *client);
-+
-+/* This is the driver that will be inserted */
-+static struct i2c_driver eeprom_driver = {
-+ .driver = {
-+ .name = "eeprom",
-+ },
-+ .attach_adapter = eeprom_attach_adapter,
-+ .detach_client = eeprom_detach_client,
-+};
-+
-+static ssize_t eeprom_write(struct kobject *kobj, struct bin_attribute *bin_attr,
-+ char *buf, loff_t off, size_t count)
-+{
-+ struct i2c_client *client = kobj_to_i2c_client(kobj);
-+ struct eeprom_data *data = i2c_get_clientdata(client);
-+ int ret;
-+ u8 i2c_buf[256];
-+
-+ if (off >= 32)
-+ return -ENOSPC;
-+
-+ if (off + count > 32)
-+ count = 32 - off;
-+
-+ mutex_unlock(&data->update_lock);
-+
-+ struct i2c_msg msgs[1] = {
-+ {
-+ .addr = client->addr,
-+ .flags = 0,
-+ .len = count+2,
-+ .buf = i2c_buf,
-+ },
-+ };
-+
-+ i2c_buf[0] = 0;
-+ i2c_buf[1] = off;
-+
-+
-+ memcpy(&i2c_buf[2], &buf[0], count );
-+
-+
-+ ret = i2c_transfer(client->adapter, msgs, 1);
-+
-+ if(ret<0)
-+ {
-+ mutex_unlock(&data->update_lock);
-+ return -EIO;
-+ }
-+
-+ mutex_unlock(&data->update_lock);
-+ return count;
-+}
-+
-+int
-+i2c_read(struct i2c_client *client, u8 reg, u8 buf[],
-+ unsigned len)
-+{
-+ int ret;
-+ u8 dt_addr[2];
-+
-+ struct i2c_msg msgs[2] = {
-+ {
-+ .addr = client->addr,
-+ .flags = 0,
-+ .len = 2,
-+ .buf = dt_addr,
-+ },
-+ {
-+ .addr = client->addr,
-+ .flags = I2C_M_RD,
-+ .len = len ,
-+ .buf = buf ,
-+ },
-+ };
-+
-+ dt_addr[0] = 0;
-+ dt_addr[1] = reg;
-+
-+ ret = i2c_transfer(client->adapter, msgs, 2);
-+ if ( ret < 0) {
-+ dev_err(&client->dev, "read error\n");
-+ return -EIO;
-+ }
-+ return ret;
-+}
-+
-+static ssize_t eeprom_read(struct kobject *kobj, struct bin_attribute *bin_attr,
-+ char *buf, loff_t off, size_t count)
-+{
-+ struct i2c_client *client = to_i2c_client(container_of(kobj, struct device, kobj));
-+ struct eeprom_data *data = i2c_get_clientdata(client);
-+ int rc;
-+
-+ mutex_lock(&data->update_lock);
-+
-+ if (off >= EEPROM_SIZE)
-+ return 0;
-+
-+ if (off + count > EEPROM_SIZE)
-+ count = EEPROM_SIZE - off;
-+
-+ rc = i2c_read(client,off,buf,count);
-+ if (rc < 0){
-+ mutex_unlock(&data->update_lock);
-+ return -EIO;
-+ }
-+
-+ mutex_unlock(&data->update_lock);
-+ return count;
-+}
-+
-+static struct bin_attribute eeprom_attr = {
-+ .attr = {
-+ .name = "eeprom",
-+ .mode = S_IRUGO,
-+ },
-+ .size = EEPROM_SIZE,
-+ .read = eeprom_read,
-+ .write = eeprom_write,
-+
-+};
-+
-+static int eeprom_attach_adapter(struct i2c_adapter *adapter)
-+{
-+ return i2c_probe(adapter, &addr_data, eeprom_detect);
-+}
-+
-+/* This function is called by i2c_probe */
-+static int eeprom_detect(struct i2c_adapter *adapter, int address, int kind)
-+{
-+ struct i2c_client *new_client;
-+ struct eeprom_data *data;
-+ int err = 0;
-+
-+ /* There are three ways we can read the EEPROM data:
-+ (1) I2C block reads (faster, but unsupported by most adapters)
-+ (2) Consecutive byte reads (100% overhead)
-+ (3) Regular byte data reads (200% overhead)
-+ The third method is not implemented by this driver because all
-+ known adapters support at least the second. */
-+ if (!i2c_check_functionality(adapter, I2C_FUNC_SMBUS_READ_BYTE_DATA
-+ | I2C_FUNC_SMBUS_BYTE))
-+ goto exit;
-+
-+ if (!(data = kzalloc(sizeof(struct eeprom_data), GFP_KERNEL))) {
-+ err = -ENOMEM;
-+ goto exit;
-+ }
-+
-+ new_client = &data->client;
-+ memset(data->data, 0xff, EEPROM_SIZE);
-+ i2c_set_clientdata(new_client, data);
-+ new_client->addr = address;
-+ new_client->adapter = adapter;
-+ new_client->driver = &eeprom_driver;
-+ new_client->flags = 0;
-+
-+ /* Fill in the remaining client fields */
-+ strlcpy(new_client->name, "eeprom", I2C_NAME_SIZE);
-+ data->valid = 0;
-+ mutex_init(&data->update_lock);
-+ data->nature = 0x00;
-+
-+ /* Tell the I2C layer a new client has arrived */
-+ if ((err = i2c_attach_client(new_client)))
-+ goto exit_kfree;
-+
-+ /* create the sysfs eeprom file */
-+ err = sysfs_create_bin_file(&new_client->dev.kobj, &eeprom_attr);
-+ if (err)
-+ goto exit_detach;
-+
-+ return 0;
-+
-+exit_detach:
-+ i2c_detach_client(new_client);
-+exit_kfree:
-+ kfree(data);
-+exit:
-+ return err;
-+}
-+
-+static int eeprom_detach_client(struct i2c_client *client)
-+{
-+ int err;
-+
-+ sysfs_remove_bin_file(&client->dev.kobj, &eeprom_attr);
-+
-+ err = i2c_detach_client(client);
-+ if (err)
-+ return err;
-+
-+ kfree(i2c_get_clientdata(client));
-+
-+ return 0;
-+}
-+
-+static int __init eeprom_init(void)
-+{
-+ return i2c_add_driver(&eeprom_driver);
-+
-+}
-+
-+static void __exit eeprom_exit(void)
-+{
-+ i2c_del_driver(&eeprom_driver);
-+}
-+
-+
-+MODULE_AUTHOR("Guillaume Ligneul guillaume.ligneul@gmail.com");
-+MODULE_DESCRIPTION("I2C EEPROM driver for AT24C32");
-+MODULE_LICENSE("GPL");
-+
-+module_init(eeprom_init);
-+module_exit(eeprom_exit);
-diff -Nru linux-2.6.26-officiel/drivers/i2c/chips/Makefile /home/guilig/workspace/kernel-goobie-2.6.26/src/drivers/i2c/chips/Makefile
---- linux-2.6.26-officiel/drivers/i2c/chips/Makefile 2008-11-06 11:12:07.000000000 +0100
-+++ /home/guilig/workspace/kernel-goobie-2.6.26/src/drivers/i2c/chips/Makefile 2008-11-06 11:18:20.000000000 +0100
-@@ -9,7 +9,7 @@
- # * I/O expander drivers go to drivers/gpio
- #
-
--
-+obj-$(CONFIG_AT24C32) += at24c32.o
- obj-$(CONFIG_ISL12024EEPROM) += isl12024-eeprom.o
- obj-$(CONFIG_DS1682) += ds1682.o
- obj-$(CONFIG_SENSORS_EEPROM) += eeprom.o
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-20 00:02:45 +0000