[i2c] [PATCH] i2c: Deprecate legacy RTC drivers

[Jean Delvare]

We have a new RTC subsystem with better drivers.

Legacy driver status:
* ds1337: The DS1337 and DS1339 are now supported by the rtc-ds1307
  driver, so it looks to me like we could even delete the ds1337
  driver right away.
* ds1374: No support in the RTC subsystem as far as I can see. If
  DS1374 support is still needed, this driver needs to be ported to
  the RTC subsystem.
* m41t00: The M41T00 itself appears to be supported by the rtc-ds1307
  driver, however the old driver also supports the M41T81 and M41T85,
  while the new driver seemingly doesn't. So I guess the rtc-ds1307
  driver needs to be extended before we can remove the m41t00 driver.

Signed-off-by: Jean Delvare <khali at linux-fr.org>
Cc: Alessandro Zummo <a.zummo at towertech.it>
Cc: Mark A. Greer <mgreer at mvista.com>
Cc: James Chapman <jchapman at katalix.com>
Cc: Randy Vinson <rvinson at mvista.com>
---
 Documentation/feature-removal-schedule.txt |    7 +++++++
 drivers/i2c/chips/Kconfig                  |   14 +++++++++++---
 2 files changed, 18 insertions(+), 3 deletions(-)

--- linux-2.6.21-git.orig/drivers/i2c/chips/Kconfig	2007-05-11 09:00:44.000000000 +0200
+++ linux-2.6.21-git/drivers/i2c/chips/Kconfig	2007-05-11 09:15:54.000000000 +0200
@@ -5,7 +5,7 @@
 menu "Miscellaneous I2C Chip support"
 
 config SENSORS_DS1337
-	tristate "Dallas Semiconductor DS1337 and DS1339 Real Time Clock"
+	tristate "Dallas DS1337 and DS1339 Real Time Clock (DEPRECATED)"
 	depends on EXPERIMENTAL
 	help
 	  If you say yes here you get support for Dallas Semiconductor
@@ -14,8 +14,11 @@ config SENSORS_DS1337
 	  This driver can also be built as a module.  If so, the module
 	  will be called ds1337.
 
+	  This driver is deprecated and will be dropped soon. Use
+	  rtc-ds1307 instead.
+
 config SENSORS_DS1374
-	tristate "Maxim/Dallas Semiconductor DS1374 Real Time Clock"
+	tristate "Dallas DS1374 Real Time Clock (DEPRECATED)"
 	depends on EXPERIMENTAL
 	help
 	  If you say yes here you get support for Dallas Semiconductor
@@ -24,6 +27,8 @@ config SENSORS_DS1374
 	  This driver can also be built as a module.  If so, the module
 	  will be called ds1374.
 
+	  This driver is deprecated and will be dropped soon.
+
 config SENSORS_EEPROM
 	tristate "EEPROM reader"
 	depends on EXPERIMENTAL
@@ -101,7 +106,7 @@ config TPS65010
 	  will be called tps65010.
 
 config SENSORS_M41T00
-	tristate "ST M41T00 RTC chip"
+	tristate "ST M41T00 RTC chip (DEPRECATED)"
 	depends on PPC32
 	help
 	  If you say yes here you get support for the ST M41T00 RTC chip.
@@ -109,6 +114,9 @@ config SENSORS_M41T00
 	  This driver can also be built as a module.  If so, the module
 	  will be called m41t00.
 
+	  This driver is deprecated and will be dropped soon. Use
+	  rtc-ds1307 instead.
+
 config SENSORS_MAX6875
 	tristate "Maxim MAX6875 Power supply supervisor"
 	depends on EXPERIMENTAL
--- linux-2.6.21-git.orig/Documentation/feature-removal-schedule.txt	2007-05-11 09:08:14.000000000 +0200
+++ linux-2.6.21-git/Documentation/feature-removal-schedule.txt	2007-05-11 09:17:34.000000000 +0200
@@ -343,3 +343,10 @@ Why:	Broken. It depends on i2c-algo-8xx 
 Who:	Jean Delvare <khali at linux-fr.org>
 
 ---------------------------
+
+What:	legacy RTC drivers (under drivers/i2c/chips)
+When:	November 2007
+Why:	Obsolete. We have a RTC subsystem with better drivers.
+Who:	Jean Delvare <khali at linux-fr.org>
+
+---------------------------


-- 
Jean Delvare