deprecate obsolete pca9539 driver

Use drivers/gpio/pca9539.c instead.

Signed-off-by: eric miao <eric.miao@marvell.com>
Acked-by: Ben Gardner <bgardner@wabtec.com>
Acked-by: Jean Delvare <khali@linux-fr.org>
Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Cc: Sam Ravnborg <sam@ravnborg.org>
Cc: Haavard Skinnemoen <hskinnemoen@atmel.com>
Cc: Philipp Zabel <philipp.zabel@gmail.com>
Cc: Russell King <rmk@arm.linux.org.uk>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

2 files changed, 8 insertions, 2 deletions

diff --git a/Documentation/i2c/chips/pca9539 b/Documentation/i2c/chips/pca9539
index c4fce6a13537..1d81c530c4a5 100644
--- a/Documentation/i2c/chips/pca9539
+++ b/Documentation/i2c/chips/pca9539
@@ -1,6 +1,9 @@
 Kernel driver pca9539
 =====================
 
+NOTE: this driver is deprecated and will be dropped soon, use
+drivers/gpio/pca9539.c instead.
+
 Supported chips:
   * Philips PCA9539
     Prefix: 'pca9539'
diff --git a/drivers/i2c/chips/Kconfig b/drivers/i2c/chips/Kconfig
index bd7082c2443d..b21593f93586 100644
--- a/drivers/i2c/chips/Kconfig
+++ b/drivers/i2c/chips/Kconfig
@@ -54,8 +54,8 @@ config PCF8575
           hardware.  If unsure, say N.
 
 config SENSORS_PCA9539
-        tristate "Philips PCA9539 16-bit I/O port"
-        depends on EXPERIMENTAL
+        tristate "Philips PCA9539 16-bit I/O port (DEPRECATED)"
+        depends on EXPERIMENTAL && GPIO_PCA9539 = "n"
         help
           If you say yes here you get support for the Philips PCA9539
           16-bit I/O port.
@@ -63,6 +63,9 @@ config SENSORS_PCA9539
           This driver can also be built as a module.  If so, the module
           will be called pca9539.
 
+          This driver is deprecated and will be dropped soon. Use
+          drivers/gpio/pca9539.c instead.
+
 config SENSORS_PCF8591
         tristate "Philips PCF8591"
         depends on EXPERIMENTAL