Convert the MXS timrotv2 32-bit down counting clocksource to the
generic clocksource infrastructure.
Cc: Sascha Hauer <kernel@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Commit 47babe69 (mxs: dynamically allocate mmc device) added the ssp
setup and mmc clocks for mx23/28, but forgot to register the mmc clocks
on mx23.
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
For consistency mxs has to be repeated, one for the name space and
another one for the device name.
LAKML-Reference: 1300308028-8922-1-git-send-email-u.kleine-koenig@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
The defines for the i2c related irqs (MX23_INT_I2C_DMA and
MX23_INT_I2C_ERROR) already match the reference manual. So make the base
address consistent.
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
LAKML-Reference: 1298049507-6987-2-git-send-email-w.sang@pengutronix.de
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Current code does not set the GPIO value to zero as mentioned in the comment.
Fix it by setting the initial GPIO value to zero.
Signed-off-by: Fabio Estevam <fabio.estevam@freescale.com>
LAKML-Reference: 1301427910-31726-1-git-send-email-fabio.estevam@freescale.com
[ukleinek: squashed two patches together fixing both boards at once]
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
To be able to relocate the .bss section at run time independently from
the rest of the code, we must make sure that no GOTOFF relocations are
used with .bss symbols. This usually means that no global variables can
be marked static unless they're also const.
Let's remove the static qualifier from current offenders, or turn them
into const variables when possible. Next commit will ensure the build
fails if one of those is reintroduced due to otherwise enforced coding
standards for the kernel.
Signed-off-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Tested-by: Tony Lindgren <tony@atomide.com>
STMP378x and MX23 are the same and just relabeled. There is a
mach-stmp378x, however, it has a lot of reinvented interfaces, leaking
all sorts of mach-specific functions into the drivers. One example is
the dmaengine which does not use the linux dmaengine-API but some
privately exported symbols. This makes generic use of the drivers
impossible. mach-mxs does it better, so convert the board to mach-mxs.
After that, it is possible to delete all stmp-specific code which should
ease further ARM-consolidation.
Compile tested only due to no hardware (seems not available anymore).
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
For the lcdif clock get_rate looks as follows:
read div from HW_CLKCTRL_DIS_LCDIF.DIV
return clk_get_rate(clk->parent) / div
with clk->parent being ref_pix_clk on my system.
ref_pix_clk's rate depends on HW_CLKCTRL_FRAC1.PIXFRAC.
The set_rate function for lcdif does:
parent_rate = clk_get_rate(clk->parent);
based on that calculate frac and div such that
parent_rate * 18 / frac / div is near the requested rate.
HW_CLKCTRL_FRAC1.PIXFRAC is updated with frac
HW_CLKCTRL_DIS_LCDIF.DIV is updated with div
For this calculation to be correct parent_rate needs to be
initialized not with the clock rate of lcdif's parent (i.e. ref_pix) but
that of its grandparent (i.e. ref_pix' parent == pll0_clk).
The obvious downside of this patch is that now set_rate(lcdif) changes
its parent's rate, too. Still this is better than a wrong rate.
Acked-by: Shawn Guo <shawn.guo@freescale.com>
LAKML-Reference: 20110225084950.GA13684@S2101-09.ap.freescale.net
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This adds the mmc host driver for Freescale MXS-based SoC i.MX23/28.
The driver calls into mxs-dma via generic dmaengine api for both pio
and data transfer.
Thanks Chris Ball for the indentation patch.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Tested-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Chris Ball <cjb@laptop.org>
Most likely, the LCD panel on mx28 platform will require a pixel
clock higher than ref_xtal_clk (24 MHz), so the patch initializes
the parent of lcdif clock as ref_pix_clk.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This patch is to add pad control helper macro to make the code easy
to read. The need is being seen when adding pad definitions for
LCDIF which gets ~30 pads to define.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
changes since v2:
- use v3 and v4 for specifying the ip version instead of i.MX23/28.
This is a better namespace when future versions are added.
- rename mach/fb.h to mach/mxsfb.h
changes since v1:
- Add a LCDC_ prefix to the register names.
- use set/clear registers where appropriate
- protect call to mxsfb_disable_controller() in mxsfb_remove()
with a (host->enabled) as suggested by Lothar Wassmann
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@freescale.com>
Cc: Paul Mundt <lethal@linux-sh.org>
Cc: linux-fbdev@vger.kernel.org
Based on code created by Lothar Waßmann, Sascha Hauer, Wolfram Sang and
me.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Wolfram Sang <w.sang@pengutronix.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
It is used for example in the i2c driver which can be compiled modular.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
This patch adds dma support for Freescale MXS-based SoC i.MX23/28,
including apbh-dma and apbx-dma.
* apbh-dma and apbx-dma are supported in the driver as two mxs-dma
instances.
* apbh-dma is different between mx23 and mx28, hardware version
register is used to differentiate.
* mxs-dma supports pio function besides data transfer. The driver
uses dma_data_direction DMA_NONE to identify the pio mode, and
steals sgl and sg_len to get pio words and numbers from clients.
* mxs dmaengine has some very specific features, like sense function
and the special NAND support (nand_lock, nand_wait4ready). These
are too specific to implemented in generic dmaengine driver.
* The driver refers to imx-sdma and only a single descriptor is
statically assigned to each channel.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
This is not strictly necessary but the right thing to do.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
This fixes a small memory leak that was only hit in very unlikely error
paths.
Signed-off-by: Lothar Waßmann <LW@KARO-electronics.de>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
i.MX23 Reference Manaul starts auart index from 1 than 0. Changing
the index to start from 0 requires corresponding changes on base
address, irq, and iomux definitions, and will probably confuse people
who reads codes and hardware documents together.
This patch introduced the field 'hwid' to distinguish the driver id
and controller id. These two ids are different on mx23 while
identical on mx28.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
i.MX23 Reference Manual names auart irq differently from i.MX28.
This patch is to align the naming with mx28, so that some device
registration codes can be shared.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Commit b2878fa (ARM: mx28: update clock and device name for dual fec
support) added only the new lookups without removing the old one.
Cc: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Get rid of ## preprocessor construct where it only makes the
code harder to read.
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Acked-by: Shawn Guo <shawn.guo@freescale.com>
Acked-by: Wolfram Sang <w.sang@pengutronix.de>
This is a very initial pm support and basically does nothing.
With this pm support entry, drivers can start testing their own
pm functions.
Signed-off-by: Shawn Guo <shawn.guo@freescale.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
Russell King