IPUv3 fixes for v3.18
* tag 'ipu-fixes-3.18' of git://git.pengutronix.de/git/pza/linux:
gpu: ipu-v3: Kconfig: Remove SOC_IMX6SL from IMX_IPUV3_CORE Kconfig
gpu: ipu-v3: ipu-smfc: Do not leave DEBUG defined
gpu: ipu-v3: Return proper error on ipu_add_client_devices error path
gpu: ipu-v3: Select GENERIC_IRQ_CHIP to fix build error
Adds ipu_smfc_set_watermark() which programs a channel's SMFC FIFO
levels at which the watermark signal is set and cleared.
Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Convert the smfc object to be specific to a single smfc channel.
Add ipu_smfc_{get|put} to retrieve and release a single smfc channel
for exclusive use, and add use counter to ipu_smfc_{enable|disable}.
Signed-off-by: Steve Longerbeam <steve_longerbeam@mentor.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
Let's only define DEBUG for debugging purpose and not by default to avoid
printing debugging message unnecessarily.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
The Sensor Multi Fifo Controller (SMFC) is used as a buffer between
the two CSIs (writing simultaneously) and up to four IDMAC channels.
Signed-off-by: Philipp Zabel <p.zabel@pengutronix.de>
