linux.git/drivers/w1/masters, branch v3.17

w1/masters: use pr_* instead of printk

2014-06-20T00:46:51+00:00

This patch replaces all calls to the "printk" function within the "masters"
subdirectory by calls to the appropriate "pr_*" function thus addressing
the following warning generated by the checkpatch script:

WARNING: Prefer [subsystem eg: netdev]_err([subsystem]dev, ...
        then dev_err(dev, ... then pr_err(...  to printk(KERN_ERR ...

Signed-off-by: Fjodor Schelichow 
Signed-off-by: Roman Sommer 
Acked-by: Evgeniy Polyakov 
Signed-off-by: Greg Kroah-Hartman

w1: mxc_w1: Optimize mxc_w1_ds2_touch_bit()

2014-06-20T00:43:34+00:00

According to the i.MX reference manual, the read/write bit operations
takes from 60 us to 120 us.
This patch optimizes mxc_w1_ds2_touch_bit() function to use proper
value for such delay. Nevertheless, a small margin for the timeout has
been added for the case if clock frequency is inaccurate.

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

w1: mxc_w1: Perform a software reset at startup

2014-06-20T00:43:34+00:00

This patch adds a software reset for 1-Wire module at driver startup.

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

w1: mxc_w1: Optimize mxc_w1_ds2_reset_bus()

2014-06-20T00:43:34+00:00

According to the i.MX reference manual, the reset procedure and
"presence" pulse takes 511 and 512 us, respectively. Measurement for
i.MX27 is about 1100 us. There is no need to wait Reset+Presence
more than this time.
This patch optimizes mxc_w1_ds2_reset_bus() function to use proper
value for delay after w1 bus reset. Nevertheless, a small margin for
the timeout has been added for the case if clock frequency is inaccurate.

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

w1: mxc_w1: Fix incorrect "presence" status

2014-06-20T00:43:34+00:00

W1 reset_bus() should return zero if slave device is present.
This patch fix this issue.

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

w1: mxc_w1: Enable driver compilation with COMPILE_TEST

2014-02-28T23:27:09+00:00

This helps increasing build testing coverage.
To do this, __raw_{read,write}b() functions was be replaced with
simple {read,write}b() variants.

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

w1: mxc_w1: Driver cleanup

2014-02-28T23:27:09+00:00

- Remove old and currently wrong address of the FSF from license
  parts of the code.
- Remove unused #include and sort remaining headers alphabetically.
- Remove unised definitions.
- Add definitions for bit-fields.
- Add missing module owner field.

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

w1: mxc_w1: Fix mxc_w1_ds2_reset_bus() return value

2014-02-28T23:27:09+00:00

This patch fix mxc_w1_ds2_reset_bus() return value.
According to i.MX reference manual, "presence status" reflected
in the bit 6 of control register.

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

w1: Remove excess dependencies on W1 for masters and slaves

2014-02-28T23:27:09+00:00

Configuration for masters and slaves is included only if W1 symbol
enabled, so no reason to check it once more.

Signed-off-by: Alexander Shiyan 
Signed-off-by: Greg Kroah-Hartman

w1-gpio: handle of_get_gpio() returning -EPROBE_DEFER better

2014-02-15T20:08:38+00:00

of_get_gpio() might return -EPROBE_DEFER meaning that the driver
providing the gpio isn't ready yet. If that happens for the first gpio
the resulting kernel output without this patch is:

	w1-gpio somename: Failed to parse DT
	platform somename: Driver w1-gpio requests probe deferral

The first message is misleading and so is suppressed with this patch.

Further if determining the gpio to switch the external pullup yields
-EPROBE_DEFER this error should be passed back to the caller instead of
just continuing without pullup.

Signed-off-by: Uwe Kleine-König 
Signed-off-by: Greg Kroah-Hartman