The patch titled
rtc: add m41t62 support to rtc-m41t80 driver
has been added to the -mm tree. Its filename is
rtc-add-m41t62-support-to-rtc-m41t80-driver.patch
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------------------------------------------------------
Subject: rtc: add m41t62 support to rtc-m41t80 driver
From: Daniel Glockner <dg@xxxxxxxxx>
Compared to the other supported chips, the m41t62 uses a different
register to set the square wave frequency.
Signed-off-by: Daniel Glockner <dg@xxxxxxxxx>
Cc: Chris Zankel <chris@xxxxxxxxxx>
Cc: David Brownell <david-b@xxxxxxxxxxx>
Cc: Alessandro Zummo <a.zummo@xxxxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
drivers/rtc/Kconfig | 4 ++--
drivers/rtc/rtc-m41t80.c | 18 +++++++++++++-----
2 files changed, 15 insertions(+), 7 deletions(-)
diff -puN drivers/rtc/Kconfig~rtc-add-m41t62-support-to-rtc-m41t80-driver drivers/rtc/Kconfig
--- a/drivers/rtc/Kconfig~rtc-add-m41t62-support-to-rtc-m41t80-driver
+++ a/drivers/rtc/Kconfig
@@ -237,11 +237,11 @@ config RTC_DRV_PCF8583
will be called rtc-pcf8583.
config RTC_DRV_M41T80
- tristate "ST M41T65/M41T80/81/82/83/84/85/87"
+ tristate "ST M41T62/65/M41T80/81/82/83/84/85/87"
help
If you say Y here you will get support for the ST M41T60
and M41T80 RTC chips series. Currently, the following chips are
- supported: M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
+ supported: M41T62, M41T65, M41T80, M41T81, M41T82, M41T83, M41ST84,
M41ST85, and M41ST87.
This driver can also be built as a module. If so, the module
diff -puN drivers/rtc/rtc-m41t80.c~rtc-add-m41t62-support-to-rtc-m41t80-driver drivers/rtc/rtc-m41t80.c
--- a/drivers/rtc/rtc-m41t80.c~rtc-add-m41t62-support-to-rtc-m41t80-driver
+++ a/drivers/rtc/rtc-m41t80.c
@@ -64,10 +64,12 @@
#define M41T80_FEATURE_BL (1 << 1) /* Battery low indicator */
#define M41T80_FEATURE_SQ (1 << 2) /* Squarewave feature */
#define M41T80_FEATURE_WD (1 << 3) /* Extra watchdog resolution */
+#define M41T80_FEATURE_SQ_ALT (1 << 4) /* RSx bits are in reg 4 */
#define DRV_VERSION "0.05"
static const struct i2c_device_id m41t80_id[] = {
+ { "m41t62", M41T80_FEATURE_SQ | M41T80_FEATURE_SQ_ALT },
{ "m41t65", M41T80_FEATURE_HT | M41T80_FEATURE_WD },
{ "m41t80", M41T80_FEATURE_SQ },
{ "m41t81", M41T80_FEATURE_HT | M41T80_FEATURE_SQ},
@@ -393,12 +395,15 @@ static ssize_t m41t80_sysfs_show_sqwfreq
{
struct i2c_client *client = to_i2c_client(dev);
struct m41t80_data *clientdata = i2c_get_clientdata(client);
- int val;
+ int val, reg_sqw;
if (!(clientdata->features & M41T80_FEATURE_SQ))
return -EINVAL;
- val = i2c_smbus_read_byte_data(client, M41T80_REG_SQW);
+ reg_sqw = M41T80_REG_SQW;
+ if (clientdata->features & M41T80_FEATURE_SQ_ALT)
+ reg_sqw = M41T80_REG_WDAY;
+ val = i2c_smbus_read_byte_data(client, reg_sqw);
if (val < 0)
return -EIO;
val = (val >> 4) & 0xf;
@@ -419,7 +424,7 @@ static ssize_t m41t80_sysfs_set_sqwfreq(
{
struct i2c_client *client = to_i2c_client(dev);
struct m41t80_data *clientdata = i2c_get_clientdata(client);
- int almon, sqw;
+ int almon, sqw, reg_sqw;
int val = simple_strtoul(buf, NULL, 0);
if (!(clientdata->features & M41T80_FEATURE_SQ))
@@ -440,13 +445,16 @@ static ssize_t m41t80_sysfs_set_sqwfreq(
almon = i2c_smbus_read_byte_data(client, M41T80_REG_ALARM_MON);
if (almon < 0)
return -EIO;
- sqw = i2c_smbus_read_byte_data(client, M41T80_REG_SQW);
+ reg_sqw = M41T80_REG_SQW;
+ if (clientdata->features & M41T80_FEATURE_SQ_ALT)
+ reg_sqw = M41T80_REG_WDAY;
+ sqw = i2c_smbus_read_byte_data(client, reg_sqw);
if (sqw < 0)
return -EIO;
sqw = (sqw & 0x0f) | (val << 4);
if (i2c_smbus_write_byte_data(client, M41T80_REG_ALARM_MON,
almon & ~M41T80_ALMON_SQWE) < 0 ||
- i2c_smbus_write_byte_data(client, M41T80_REG_SQW, sqw) < 0)
+ i2c_smbus_write_byte_data(client, reg_sqw, sqw) < 0)
return -EIO;
if (val && i2c_smbus_write_byte_data(client, M41T80_REG_ALARM_MON,
almon | M41T80_ALMON_SQWE) < 0)
_
Patches currently in -mm which might be from dg@xxxxxxxxx are
origin.patch
linux-next.patch
xtensa-make-startup-code-discardable.patch
xtensa-nommu-support.patch
xtensa-variant-specific-code.patch
xtensa-variant-irq-set-callbacks.patch
xtensa-s6000-variant-core-definitions.patch
xtensa-s6000-variant.patch
xtensa-s6000-gpio-driver.patch
xtensa-let-platform-override-kerneloffset.patch
xtensa-platform-stretch-s6105-eval-board.patch
xtensa-cache-inquiry-and-unaligned-cache-handling-functions.patch
xtensa-s6000-dma-engine-support.patch
xtensa-allow-platform-and-variant-to-initialize-own-irq-chips.patch
xtensa-support-s6000-gpio-irqs-and-alternate-function-selection.patch
s6gmac-xtensa-s6000-on-chip-ethernet-driver.patch
xtensa-s6105-specific-configuration-for-s6gmac.patch
xtensa-enable-s6gmac-in-s6105_defconfig.patch
rtc-add-m41t62-support-to-rtc-m41t80-driver.patch
xtensa-add-m41t62-rtc-to-s6105-platform.patch
xtensa-enable-m41t80-driver-in-s6105_defconfig.patch
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