video: backlight: fix the value of 'brightness_max' ...

Fixes: 87c6a88 video/backlight-pwm: fix the value of 'brightness_max'.

brightness_max should really contain the number of brightness steps, so
the number of elements in the brightness array.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/video-backlight'

Merge branch 'for-next/syscon'

Merge branch 'for-next/net'

Merge branch 'for-next/misc'

Merge branch 'for-next/imx'

Merge branch 'for-next/boot'

ARM i.MX31: add SPI support ...

The i.MX31 SPI interface was refered by freescale as spi_ver_0_4 in one
of their older vendor extended linux releases. spi_ver_0_4 differs only
in minor aspects to spi_ver_0_7 (i.MX35) which is already supported by
barebox.
Regarding barebox, the differences boil down to the location and length
of the CHIP SELECT and BIT COUNT/BURST LENGTH elements of CONREG. The
spi_ver_0_4 variant is limited to single word bursts with a maximum of
32 bits_per_word.

Add support for the i.MX31 SPI interface to the barebox spi_ver_0_7
implementation.

Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mc13xxx: make driver-provided SPI frequency overridable ...

The preset SPI frequency for mc13xxx PMIC introduced with patch 6e18b3a48ee4
("mc13xxx: Define maximum SPI clock frequency global to driver") is not
desirable or working on all boards. Provide a possibility to override
the default SPI max_speed_hz from board code.

Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mtd: spi-nor: add new variants ...

Read access tested on W25Q20BW and MX25U4035.

Signed-off-by: Alexander Kurz <akurz@blala.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

include: Move bulk of boot.h to bootm.h ...

The majority of the stuff currently in include/boot.h is about bootm
code implemented common/bootm.c. To be more consistent move it to a
new file include/bootm.h.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

nand: mrvl: use ERR_CAST() for returning error pointers ...

ERR_CAST exists to return error pointers as error pointers without
casting them explicitly to the correct pointer type.

Also this Fixes:
In function 'alloc_nand_resource':
warning: return makes pointer from integer without a cast

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: syscon: Use IOMEM instead of explicit cast ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: syscon: Don't check xzalloc return for NULL ...

Xzalloc never returns NULL, so this check does not bring any value.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: syscon: Decouple syscon interface from platform devices ...

Follow Linux Kernel change introduced in
bdb0066 and avoid device/driver model
for DT-based platforms. See the original kernel commit for the rationale.

Also make syscon_base_lookup_by_pdevname() behave the same way as its
kernel counterpart in the case whern "property" argument is NULL.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

mfd: syscon: Don't call request_iomem_region() ...

On platforms that mix dedicated IP block register space with
miscellaneous registers it is necessary to share register window between
syscon and dedicated IP block driver. Calling request_iomem_region()
implies exclusive ownership of the region, which, in the case above
could not happen.

This change also makes this driver's behaviour to that of its Linux
kernel counterpart.

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Revert "syscon: Decrease driver registration priority" ...

Fixing the i.MX6 specific issue this way breaks things on CLPS711x
target. Better fix for the problem is to follow this patch.

This reverts commit c203958.

Reported-by: Alexander Shiyan <shc_work@mail.ru>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video/backlight-pwm: properly handle the case of an empty 'brightness-levels' in the device tree. ...

In case of an empty 'brightness-levels' array in the device tree or
a non empty one but containing only zeros the value of
'pwm_backlight->scale' would remain 0 possibly causing a division by zero
in the function compute_duty_cycle().

To fix it we check the computed value in case we actually have a 'brightness-levels'
array in the device tree otherwise we implicitly assume a simple array
of the form { 0, 1, 2, ..., 100 } and set the scale to 100.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video/backlight-pwm: code readability improvement. ...

We use the local variable 'length' instead of the lengthy
'pwm_backlight->backlight.brightness_max' within pwm_backlight_parse_dt().

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video/backlight-pwm: fix the value of 'brightness_max'. ...

The field pwm_backlight->backlight.brightness_max should be the maximum
allowed brightness value for the backlight, not the max index of the
array 'pwm_backlight->levels[]'.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

video/backlight-pwm: fixed a loop index going out of range. ...

In the function pwm_backlight_parse_dt() the last iteration of the for
loop accessed memory past the end of the array 'pwm_backlight->levels[]'
because of a wrong test ( '<=' instead of '<').

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

imx_thermal: Remove leftover debug output ...

Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

net: usb: use minimum timeout when polling for new packets ...

When no new packets have arrived we want to return to the caller
as soon as possible to give other network controllers the chance
to receive packets. With the current USB bulk message timeout of
one second other network controllers do not work properly whenever
the USB network controller is active.

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Revert "mci: imx-esdhc: Remove excess function" ...

This reverts commit 8a68969.

With this patch it's no longer possible to call detect on the
physical device which is necessary for example to make environment
on MMC work. Unlike the commit message for 8a6896971d claims
mci_detect_card() is not called from mci_register().

Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>

Merge branch 'for-next/video'

Merge branch 'for-next/ubi'

Merge branch 'for-next/state'

Merge branch 'for-next/mtd'

Merge branch 'for-next/misc'

Merge branch 'for-next/mips'