switch ixp4xx and ubicom32 to 2.6.30, get rid of 2.6.28 files

[openwrt/svn-archive/archive.git] / target / linux / generic-2.6 / patches-2.6.28 / 450-i2c_at24_add_kernel_interface_read_write.patch

diff --git a/target/linux/generic-2.6/patches-2.6.28/450-i2c_at24_add_kernel_interface_read_write.patch b/target/linux/generic-2.6/patches-2.6.28/450-i2c_at24_add_kernel_interface_read_write.patch
deleted file mode 100644 (file)
index e360db0..0000000
--- a/target/linux/generic-2.6/patches-2.6.28/450-i2c_at24_add_kernel_interface_read_write.patch
+++ /dev/null
@@ -1,134 +0,0 @@
-Subject: [PATCH 2/3] I2C: at24: add kernel interface for reading/writing EEPROM
-Date: Monday 25 August 2008
-From: Kevin Hilman <khilman@deeprootsystems.com>
-To: davinci-linux-open-source@linux.davincidsp.com
-
-This patch adds an interface by which other kernel code can read/write
-detected EEPROM.
-
-The platform code registers a 'setup' callback with the
-at24_platform_data.  When the at24 driver detects an EEPROM, it fills
-out the read and write functions of at24_iface and calls the setup
-callback.  The platform code can then use the read/write functions in
-the at24_iface struct for reading and writing the EEPROM.
-
-Original idea, review and updates by David Brownell <david-b@pacbell.net>
-
-Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com>
----
- drivers/i2c/chips/at24.c |   42 +++++++++++++++++++++++++++++++++++-------
- include/linux/i2c/at24.h |   10 ++++++++++
- 2 files changed, 45 insertions(+), 7 deletions(-)
-
---- a/drivers/i2c/chips/at24.c
-+++ b/drivers/i2c/chips/at24.c
-@@ -53,6 +53,7 @@
- 
- struct at24_data {
-       struct at24_platform_data chip;
-+      struct at24_iface iface;
-       bool use_smbus;
- 
-       /*
-@@ -264,13 +265,6 @@ static ssize_t at24_bin_read(struct kobj
- 
- 
- /*
-- * REVISIT: export at24_bin{read,write}() to let other kernel code use
-- * eeprom data. For example, it might hold a board's Ethernet address, or
-- * board-specific calibration data generated on the manufacturing floor.
-- */
--
--
--/*
-  * Note that if the hardware write-protect pin is pulled high, the whole
-  * chip is normally write protected. But there are plenty of product
-  * variants here, including OTP fuses and partial chip protect.
-@@ -386,6 +380,30 @@ static ssize_t at24_bin_write(struct kob
- 
- /*-------------------------------------------------------------------------*/
- 
-+/*
-+ * This lets other kernel code access the eeprom data. For example, it
-+ * might hold a board's Ethernet address, or board-specific calibration
-+ * data generated on the manufacturing floor.
-+ */
-+
-+static ssize_t at24_iface_read(struct at24_iface *iface, char *buf,
-+                            off_t offset, size_t count)
-+{
-+      struct at24_data *at24 = container_of(iface, struct at24_data, iface);
-+
-+      return at24_eeprom_read(at24, buf, offset, count);
-+}
-+
-+static ssize_t at24_iface_write(struct at24_iface *iface, char *buf,
-+                             off_t offset, size_t count)
-+{
-+      struct at24_data *at24 = container_of(iface, struct at24_data, iface);
-+
-+      return at24_eeprom_write(at24, buf, offset, count);
-+}
-+
-+/*-------------------------------------------------------------------------*/
-+
- static int at24_probe(struct i2c_client *client, const struct i2c_device_id *id)
- {
-       struct at24_platform_data chip;
-@@ -413,6 +431,9 @@ static int at24_probe(struct i2c_client 
-                * is recommended anyhow.
-                */
-               chip.page_size = 1;
-+
-+              chip.setup = NULL;
-+              chip.context = NULL;
-       }
- 
-       if (!is_power_of_2(chip.byte_len))
-@@ -449,6 +470,9 @@ static int at24_probe(struct i2c_client 
-               goto err_out;
-       }
- 
-+      at24->iface.read = at24_iface_read;
-+      at24->iface.write = at24_iface_write;
-+
-       mutex_init(&at24->lock);
-       at24->use_smbus = use_smbus;
-       at24->chip = chip;
-@@ -520,6 +544,10 @@ static int at24_probe(struct i2c_client 
-               at24->write_max,
-               use_smbus ? ", use_smbus" : "");
- 
-+      /* export data to kernel code */
-+      if (chip.setup)
-+              chip.setup(&at24->iface, chip.context);
-+
-       return 0;
- 
- err_clients:
---- a/include/linux/i2c/at24.h
-+++ b/include/linux/i2c/at24.h
-@@ -15,6 +15,13 @@
-  * is bigger than what the chip actually supports!
-  */
- 
-+struct at24_iface {
-+      ssize_t (*read)(struct at24_iface *, char *buf, off_t offset,
-+                      size_t count);
-+      ssize_t (*write)(struct at24_iface *, char *buf, off_t offset,
-+                       size_t count);
-+};
-+
- struct at24_platform_data {
-       u32             byte_len;               /* size (sum of all addr) */
-       u16             page_size;              /* for writes */
-@@ -23,6 +30,9 @@ struct at24_platform_data {
- #define AT24_FLAG_READONLY    0x40    /* sysfs-entry will be read-only */
- #define AT24_FLAG_IRUGO               0x20    /* sysfs-entry will be world-readable */
- #define AT24_FLAG_TAKE8ADDR   0x10    /* take always 8 addresses (24c00) */
-+
-+      int             (*setup)(struct at24_iface *, void *context);
-+      void            *context;
- };
- 
- #endif /* _LINUX_AT24_H */