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r: 190714
b: refs/heads/master
c: 8f649c3
h: refs/heads/master
v: v3
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Trond Myklebust authored and Trond Myklebust committed May 1, 2010
1 parent 4d504ca commit c8ef04a
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Showing 205 changed files with 1,216 additions and 2,251 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: 4a2253313653bcc4126287818b676f95ac26dc09
refs/heads/master: 8f649c376254755f2261a693b3d48d09126218dc
49 changes: 33 additions & 16 deletions trunk/Documentation/DocBook/libata.tmpl
Original file line number Diff line number Diff line change
Expand Up @@ -107,6 +107,10 @@ void (*dev_config) (struct ata_port *, struct ata_device *);
issue of SET FEATURES - XFER MODE, and prior to operation.
</para>
<para>
Called by ata_device_add() after ata_dev_identify() determines
a device is present.
</para>
<para>
This entry may be specified as NULL in ata_port_operations.
</para>

Expand Down Expand Up @@ -150,8 +154,8 @@ unsigned int (*mode_filter) (struct ata_port *, struct ata_device *, unsigned in

<sect2><title>Taskfile read/write</title>
<programlisting>
void (*sff_tf_load) (struct ata_port *ap, struct ata_taskfile *tf);
void (*sff_tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
void (*tf_load) (struct ata_port *ap, struct ata_taskfile *tf);
void (*tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
</programlisting>

<para>
Expand All @@ -160,35 +164,36 @@ void (*sff_tf_read) (struct ata_port *ap, struct ata_taskfile *tf);
hardware registers / DMA buffers, to obtain the current set of
taskfile register values.
Most drivers for taskfile-based hardware (PIO or MMIO) use
ata_sff_tf_load() and ata_sff_tf_read() for these hooks.
ata_tf_load() and ata_tf_read() for these hooks.
</para>

</sect2>

<sect2><title>PIO data read/write</title>
<programlisting>
void (*sff_data_xfer) (struct ata_device *, unsigned char *, unsigned int, int);
void (*data_xfer) (struct ata_device *, unsigned char *, unsigned int, int);
</programlisting>

<para>
All bmdma-style drivers must implement this hook. This is the low-level
operation that actually copies the data bytes during a PIO data
transfer.
Typically the driver will choose one of ata_sff_data_xfer_noirq(),
ata_sff_data_xfer(), or ata_sff_data_xfer32().
Typically the driver
will choose one of ata_pio_data_xfer_noirq(), ata_pio_data_xfer(), or
ata_mmio_data_xfer().
</para>

</sect2>

<sect2><title>ATA command execute</title>
<programlisting>
void (*sff_exec_command)(struct ata_port *ap, struct ata_taskfile *tf);
void (*exec_command)(struct ata_port *ap, struct ata_taskfile *tf);
</programlisting>

<para>
causes an ATA command, previously loaded with
->tf_load(), to be initiated in hardware.
Most drivers for taskfile-based hardware use ata_sff_exec_command()
Most drivers for taskfile-based hardware use ata_exec_command()
for this hook.
</para>

Expand All @@ -213,23 +218,29 @@ command.

<sect2><title>Read specific ATA shadow registers</title>
<programlisting>
u8 (*sff_check_status)(struct ata_port *ap);
u8 (*sff_check_altstatus)(struct ata_port *ap);
u8 (*check_status)(struct ata_port *ap);
u8 (*check_altstatus)(struct ata_port *ap);
</programlisting>

<para>
Reads the Status/AltStatus ATA shadow register from
hardware. On some hardware, reading the Status register has
the side effect of clearing the interrupt condition.
Most drivers for taskfile-based hardware use
ata_sff_check_status() for this hook.
ata_check_status() for this hook.
</para>
<para>
Note that because this is called from ata_device_add(), at
least a dummy function that clears device interrupts must be
provided for all drivers, even if the controller doesn't
actually have a taskfile status register.
</para>

</sect2>

<sect2><title>Select ATA device on bus</title>
<programlisting>
void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
void (*dev_select)(struct ata_port *ap, unsigned int device);
</programlisting>

<para>
Expand All @@ -240,7 +251,9 @@ void (*sff_dev_select)(struct ata_port *ap, unsigned int device);
</para>
<para>
Most drivers for taskfile-based hardware use
ata_sff_dev_select() for this hook.
ata_std_dev_select() for this hook. Controllers which do not
support second drives on a port (such as SATA contollers) will
use ata_noop_dev_select().
</para>

</sect2>
Expand Down Expand Up @@ -428,13 +441,13 @@ void (*irq_clear) (struct ata_port *);
to struct ata_host_set.
</para>
<para>
Most legacy IDE drivers use ata_sff_interrupt() for the
Most legacy IDE drivers use ata_interrupt() for the
irq_handler hook, which scans all ports in the host_set,
determines which queued command was active (if any), and calls
ata_sff_host_intr(ap,qc).
ata_host_intr(ap,qc).
</para>
<para>
Most legacy IDE drivers use ata_sff_irq_clear() for the
Most legacy IDE drivers use ata_bmdma_irq_clear() for the
irq_clear() hook, which simply clears the interrupt and error
flags in the DMA status register.
</para>
Expand Down Expand Up @@ -483,6 +496,10 @@ void (*host_stop) (struct ata_host_set *host_set);
data from port at this time.
</para>
<para>
Many drivers use ata_port_stop() as this hook, which frees the
PRD table.
</para>
<para>
->host_stop() is called after all ->port_stop() calls
have completed. The hook must finalize hardware shutdown, release DMA
and other resources, etc.
Expand Down
23 changes: 0 additions & 23 deletions trunk/Documentation/feature-removal-schedule.txt
Original file line number Diff line number Diff line change
Expand Up @@ -589,26 +589,3 @@ Why: Useful in 2003, implementation is a hack.
Generally invoked by accident today.
Seen as doing more harm than good.
Who: Len Brown <len.brown@intel.com>

----------------------------

What: video4linux /dev/vtx teletext API support
When: 2.6.35
Files: drivers/media/video/saa5246a.c drivers/media/video/saa5249.c
include/linux/videotext.h
Why: The vtx device nodes have been superseded by vbi device nodes
for many years. No applications exist that use the vtx support.
Of the two i2c drivers that actually support this API the saa5249
has been impossible to use for a year now and no known hardware
that supports this device exists. The saa5246a is theoretically
supported by the old mxb boards, but it never actually worked.

In summary: there is no hardware that can use this API and there
are no applications actually implementing this API.

The vtx support still reserves minors 192-223 and we would really
like to reuse those for upcoming new functionality. In the unlikely
event that new hardware appears that wants to use the functionality
provided by the vtx API, then that functionality should be build
around the sliced VBI API instead.
Who: Hans Verkuil <hverkuil@xs4all.nl>
5 changes: 0 additions & 5 deletions trunk/Documentation/i2c/writing-clients
Original file line number Diff line number Diff line change
Expand Up @@ -74,11 +74,6 @@ structure at all. You should use this to keep device-specific data.
/* retrieve the value */
void *i2c_get_clientdata(const struct i2c_client *client);

Note that starting with kernel 2.6.34, you don't have to set the `data' field
to NULL in remove() or if probe() failed anymore. The i2c-core does this
automatically on these occasions. Those are also the only times the core will
touch this field.


Accessing the client
====================
Expand Down
8 changes: 4 additions & 4 deletions trunk/Documentation/input/elantech.txt
Original file line number Diff line number Diff line change
Expand Up @@ -333,14 +333,14 @@ byte 0:
byte 1:

bit 7 6 5 4 3 2 1 0
. . . . . x10 x9 x8
x15 x14 x13 x12 x11 x10 x9 x8

byte 2:

bit 7 6 5 4 3 2 1 0
x7 x6 x5 x4 x4 x2 x1 x0

x10..x0 = absolute x value (horizontal)
x15..x0 = absolute x value (horizontal)

byte 3:

Expand All @@ -350,14 +350,14 @@ byte 3:
byte 4:

bit 7 6 5 4 3 2 1 0
. . . . . . y9 y8
y15 y14 y13 y12 y11 y10 y8 y8

byte 5:

bit 7 6 5 4 3 2 1 0
y7 y6 y5 y4 y3 y2 y1 y0

y9..y0 = absolute y value (vertical)
y15..y0 = absolute y value (vertical)


4.2.2 Two finger touch
Expand Down
10 changes: 8 additions & 2 deletions trunk/arch/arm/boot/compressed/head.S
Original file line number Diff line number Diff line change
Expand Up @@ -685,8 +685,8 @@ proc_types:
W(b) __armv4_mmu_cache_off
W(b) __armv4_mmu_cache_flush

.word 0x56056900
.word 0xffffff00 @ PXA9xx
.word 0x56056930
.word 0xff0ffff0 @ PXA935
W(b) __armv4_mmu_cache_on
W(b) __armv4_mmu_cache_off
W(b) __armv4_mmu_cache_flush
Expand All @@ -697,6 +697,12 @@ proc_types:
W(b) __armv4_mmu_cache_off
W(b) __armv5tej_mmu_cache_flush

.word 0x56056930
.word 0xff0ffff0 @ PXA935
W(b) __armv4_mmu_cache_on
W(b) __armv4_mmu_cache_off
W(b) __armv4_mmu_cache_flush

.word 0x56050000 @ Feroceon
.word 0xff0f0000
W(b) __armv4_mmu_cache_on
Expand Down
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