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Driver changes for ti-sysc for v4.17

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This series of changes enables the use device tree based sysconfig
 data for ti-sysc driver. As we already have SmartReflex data configured,
 we use that as the first driver to enable. To do that in a way where
 SmartReflex is not probed twice, we need to prepare the SmartReflex
 driver before flipping dts data on for it in the last patch of the
 series.
 
 To avoid regressions, we are checking the passed dts data against
 existing platform data since we still have it available. Then after the
 dts files are converted, we can simply drop the related platform data
 at some point in the future.
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Merge tag 'omap-for-v4.17/ti-sysc-signed' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap into next/soc

Pull "Driver changes for ti-sysc for v4.17" from Tony Lindgren:

This series of changes enables the use device tree based sysconfig
data for ti-sysc driver. As we already have SmartReflex data configured,
we use that as the first driver to enable. To do that in a way where
SmartReflex is not probed twice, we need to prepare the SmartReflex
driver before flipping dts data on for it in the last patch of the
series.

To avoid regressions, we are checking the passed dts data against
existing platform data since we still have it available. Then after the
dts files are converted, we can simply drop the related platform data
at some point in the future.

* tag 'omap-for-v4.17/ti-sysc-signed' of ssh://gitolite.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap:
  ARM: OMAP2+: Enable ti-sysc to use device tree data for smartreflex
  PM / AVS: SmartReflex: Prepare to use device tree based probing
  ARM: OMAP2+: Try to parse earlycon from parent too
  ARM: OMAP2+: Add checks for device tree based sysconfig data
  ARM: OMAP2+: Add functions to allocate module data from device tree
  bus: ti-sysc: Handle some devices in omap_device compatible way
  bus: ti-sysc: Add support for platform data callbacks
  bus: ti-sysc: Remove unnecessary debugging statements
  bus: ti-sysc: Improve handling for no-reset-on-init and no-idle-on-init
  bus: ti-sysc: Handle stdout-path for debug console
  bus: ti-sysc: Add suspend and resume handling
  bus: ti-sysc: Add fck clock alias for children with notifier_block
  ARM: OMAP2+: Prepare to pass auxdata for smartreflex
This commit is contained in:
Arnd Bergmann 2018-03-07 16:26:43 +01:00
commit 3bf5c70d06
10 changed files with 1087 additions and 57 deletions
Download patch file Download diff file Expand all files Collapse all files

50
include/linux/platform_data/ti-sysc.h
View file

@ -16,6 +16,10 @@ enum ti_sysc_module_type {
TI_SYSC_OMAP4_USB_HOST_FS,
};
struct ti_sysc_cookie {
void *data;
};
/**
* struct sysc_regbits - TI OCP_SYSCONFIG register field offsets
* @midle_shift: Offset of the midle bit
@ -41,6 +45,7 @@ struct sysc_regbits {
s8 emufree_shift;
};
#define SYSC_QUIRK_LEGACY_IDLE BIT(8)
#define SYSC_QUIRK_RESET_STATUS BIT(7)
#define SYSC_QUIRK_NO_IDLE_ON_INIT BIT(6)
#define SYSC_QUIRK_NO_RESET_ON_INIT BIT(5)
@ -83,4 +88,49 @@ struct sysc_config {
u32 quirks;
};
enum sysc_registers {
SYSC_REVISION,
SYSC_SYSCONFIG,
SYSC_SYSSTATUS,
SYSC_MAX_REGS,
};
/**
* struct ti_sysc_module_data - ti-sysc to hwmod translation data for a module
* @name: legacy "ti,hwmods" module name
* @module_pa: physical address of the interconnect target module
* @module_size: size of the interconnect target module
* @offsets: array of register offsets as listed in enum sysc_registers
* @nr_offsets: number of registers
* @cap: interconnect target module capabilities
* @cfg: interconnect target module configuration
*
* This data is enough to allocate a new struct omap_hwmod_class_sysconfig
* based on device tree data parsed by ti-sysc driver.
*/
struct ti_sysc_module_data {
const char *name;
u64 module_pa;
u32 module_size;
int *offsets;
int nr_offsets;
const struct sysc_capabilities *cap;
struct sysc_config *cfg;
};
struct device;
struct ti_sysc_platform_data {
struct of_dev_auxdata *auxdata;
int (*init_module)(struct device *dev,
const struct ti_sysc_module_data *data,
struct ti_sysc_cookie *cookie);
int (*enable_module)(struct device *dev,
const struct ti_sysc_cookie *cookie);
int (*idle_module)(struct device *dev,
const struct ti_sysc_cookie *cookie);
int (*shutdown_module)(struct device *dev,
const struct ti_sysc_cookie *cookie);
};
#endif /* __TI_SYSC_DATA_H__ */