Convert a nonnegative error return code to a negative one, as returned
elsewhere in the function.

A simplified version of the semantic match that finds this problem is as
follows: (http://coccinelle.lip6.fr/)

// <smpl>
(
if@p1 (\(ret < 0\|ret != 0\))
 { ... return ret; }
|
ret@p1 = 0
)
... when != ret = e1
    when != &ret
*if(...)
{
  ... when != ret = e2
      when forall
 return ret;
}
// </smpl>
Signed-off-by: NPeter Senna Tschudin <peter.senna@gmail.com>
Acked-by: NDonghwa Lee <dh09.lee@samsung.com>
Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>

Fixes the following sparse warnings:
drivers/video/exynos/exynos_mipi_dsi.c:208:22: warning:
symbol 'exynos_mipi_dsi_find_lcd_device' was not declared. Should it be static?
drivers/video/exynos/exynos_mipi_dsi.c:268:22: warning:
symbol 'exynos_mipi_dsi_bind_lcd_ddi' was not declared. Should it be static?
Signed-off-by: NSachin Kamat <sachin.kamat@linaro.org>
Acked-by: NDonghwa Lee <dh09.lee@samsung.com>
Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>

When FB_BLANK_UNLANK event occured, exynos mipi dsi regulators have to turn on.
Signed-off-by: NDonghwa Lee <dh09.lee@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>

Correct spelling typo in debug messages and comments
within drivers/video.
Signed-off-by: NMasanari Iida <standby24x7@gmail.com>
Signed-off-by: NJiri Kosina <jkosina@suse.cz>

Make sure all resources are initialized before interrupt handler is
registered. Pass full platform device name to request_irq() so it
can be distinguished which device has requested an interrupt in cases
there are multiple instances in the system.

Also enable voltage regulators regardless of they have been enabled
by bootloader or not, to make sure other drivers using same regulators
don't disable them unexpectedly.
Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: NDonghwa Lee <dh09.lee@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>

Use proper PM ops from struct dev_pm_ops rather than the deprecated ones.
Signed-off-by: NSylwester Nawrocki <s.nawrocki@samsung.com>
Signed-off-by: NDonghwa Lee <dh09.lee@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>

MIPI DSI uses 1.1v regulator, so change its supply name.
Signed-off-by: NDonghwa Lee <dh09.lee@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>

When exynos_mipi_update_cfg() is called, mipi dsi registers were become
sw reset. So, It needs to enable interrupt again.
Signed-off-by: NDonghwa Lee <dh09.lee@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>

Samsung S5PC210 and EXYNOS SoC platform has MIPI-DSI controller and
MIPI-DSI based LCD Panel could be used with it.  This patch supports
MIPI-DSI driver based Samsung SoC chip.

LCD panel driver based MIPI-DSI should be registered to MIPI-DSI driver at
machine code and LCD panel driver specific function registered to
mipi_dsim_ddi structure at lcd panel init function called system init.  In
the MIPI-DSI driver, find lcd panel driver by using registered lcd panel
name, and then initialize lcd panel driver.
Signed-off-by: NDonghwa Lee <dh09.lee@samsung.com>
Signed-off-by: NInki Dae <inki.dae@samsung.com>
Signed-off-by: NKyungmin Park <kyungmin.park@samsung.com>
Acked-by: NJingoo Han <jg1.han@samsung.com>
Cc: Richard Purdie <rpurdie@rpsys.net>
Signed-off-by: NAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: NFlorian Tobias Schandinat <FlorianSchandinat@gmx.de>