Since there are now many sta2x11-mfd platform devices, using defines
for their names looks like a better solution.
Signed-off-by: NDavide Ciminaghi <ciminaghi@gnudd.com>
Acked-by: NAlessandro Rubini <rubini@gnudd.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

A couple of predefined clocks (mux and gated) need to be
initialized with the virtual address of the clock's controlling
register and the address of a spinlock used to protect against
races.

This function exports such data for all the mfd cells.
Signed-off-by: NDavide Ciminaghi <ciminaghi@gnudd.com>
Acked-by: NAlessandro Rubini <rubini@gnudd.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

Signed-off-by: NDavide Ciminaghi <ciminaghi@gnudd.com>
Acked-by: NAlessandro Rubini <rubini@gnudd.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

A driver for the apb-soc registers is needed by the clock
infrastructure code to configure and control clocks on the sta2x11
chip.

Since some of the functions in sta2x11-mfd.c were almost identical
for the two existing platform devices, the following changes
have been performed to avoid further code duplication while
adding the apb-soc-regs driver:

* The sctl_regs and apbreg_regs fields in struct sta2x11_mfd
have been turned into just one array of pointers accessed by
device index.
* Platform probe methods have become one-liners invoking a
common probe with the device's index as second parameter.
* For loops have been inserted where the same operations
were performed for each of the two bars of a pci device.
* The apbreg_mask and sctl_mask functions were almost identical,
so they were turned into inline functions invoking a common
__sta2x11_mfd_mask() with the platform device's index as last
parameter. To do this, enum sta2x11_mfd_plat_dev has been declared in
sta2x11-mfd.h and more device types have been added to it.
Reviewed-by: NMark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: NDavide Ciminaghi <ciminaghi@gnudd.com>
Acked-by: NAlessandro Rubini <rubini@gnudd.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>

This also introduces <asm/sta2x11.h> to export a function that is in
the base sta2x11 support patches. The header will increase with other
prototypes and constants over time.
Signed-off-by: NAlessandro Rubini <rubini@gnudd.com>
Acked-by: NGiancarlo Asnaghi <giancarlo.asnaghi@st.com>
Cc: Alan Cox <alan@linux.intel.com>
Signed-off-by: NSamuel Ortiz <sameo@linux.intel.com>