- 20 Aug, 2009 13 commits
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Michael Trimarchi authored
Signed-off-by: Michael Trimarchi <trimarchimichael@yahoo.it> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Alessandro Zummo authored
- simplifies irq set freq - ioctl() was duplicating functionalities of rtc-dev core - corrected initialization sequence - use platform_driver_probe Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Cc: Angelo Castello <angelo.castello@st.com> Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Kay Sievers <kay.sievers@vrfy.org> Cc: Jamie Lenehan <lenehan@twibble.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Alessandro Zummo authored
- removed spinlock protection, it's handled by the rtc class - use platform_driver_probe - return appropriate code for rtc_read_time - style issues Signed-off-by: Alessandro Zummo <a.zummo@towertech.it> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored
-tip can't be bothered keeping interfaces stable long enough for anyone to use them without having their builds broken without notification, so just ifdef around the problematic symbols until the new interfaces become available upstream. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored
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Magnus Damm authored
Add USB gadget support for port CN26 on the Solution Engine 7724 board. The r8a66597-udc driver is hooked up as a platform device and some registers are configured to enable the USB in gadget mode. The hardware driving the USB port is the on-chip USB1 block in the sh7724 processor configured as USB gadget controller. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Magnus Damm authored
Add USB gadget support for port YC301 on the KFR2R09 board. The r8a66597-udc driver is hooked up as a platform device, clocks are enabled via I2C and some registers are configured to enable the USB in gadget mode. The hardware driving the USB port is the on-chip USB0 block in the sh7724 processor configured as USB gadget controller. This board is using external hardware to detect USB hotplug events and allows the processor to dynamically start and stop clocks. This well thought out hardware feature is unused at this point and plug and play is unfortunately unsupported. To properly support all hardware features the USB gadget stack may need some adjustment. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Magnus Damm authored
This patch improves the disable_controller() function in the r8a66597-udc driver to disable all interrupts and also clear status flags. With this patch in place the driver survives kexec. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Magnus Damm authored
This patch updates the r8a66597-udc buffer management code. Use fixed buffers for bulk and isochronous pipes, also make sure to handle the isochronous-as-bulk case. With fixed buffers there is no need to keep track of used buffers with bi_bufnum. Also, this fixes a potential buffer offset problem where the base offset incorrectly varies with the number of pipes used. The m66592 driver recently got fixed in a similar way. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Magnus Damm authored
Add support for the clock framework to the r8a66597 gadget driver. This is needed to control the clock driving the USB block. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Yoshihiro Shimoda authored
While in-tree support for the R8A66597 host side has been supported for some time, the peripheral side has so far been unsupported. This adds a new USB gadget driver which bridges the gap and finally wires up the peripheral side as well. Signed-off-by: Yoshihiro Shimoda <shimoda.yoshihiro@renesas.com> Tested-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Kuninori Morimoto authored
This adds preliminary support for the EcoVec board. Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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- 19 Aug, 2009 2 commits
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Kuninori Morimoto authored
This patch also update help comment Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Kuninori Morimoto authored
Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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- 18 Aug, 2009 6 commits
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Kuninori Morimoto authored
While most platforms implement LED banks in sets of 8/16/32, some use different configurations. This adds a LED mask to the heartbeat platform data to allow platforms to constrain the bitmap, which is otherwise derived from the register size. Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Kuninori Morimoto authored
This patch updates the FRQCRA.IFC divisor values for SH7724. Despite not being initially documented, the / 3 mode is also support for the IFC division. Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Kuninori Morimoto authored
FLLFRQ setting is needed to use correct PLL clock for kfr2409. Signed-off-by: Kuninori Morimoto <morimoto.kuninori@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Matt Fleming authored
save_regs contains an SR modification without an irqflags annotation, which resulted in a missing TRACE_IRQS_OFF in the interrupt exception path on SH-3/SH4. I've also moved the TRACE_IRQS_OFF/ON annotation when returning from the interrupt to just before we call __restore_all. This seems like the most logical place to put this because the annotation is for when we restore the SR register so we should delay the annotation until as last as possible. We were also missing a TRACE_IRQS_OFF in resume_kernel when CONFIG_PREEMPT is enabled. The end result is that this fixes up the lockdep engine debugging support with CONFIG_PREEMPT enabled on all SH-3/4 parts. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Magnus Damm authored
This patch adds "SuperH Mobile Standby Mode [SF]" to the list of cpuidle sleep modes. If the software latency requirements from cpuidle are met together with fulfilled hardware requirements then deep sleep modes can be entered. Tested on sh7722 and sh7724 with "Sleep Mode", "Sleep Mode + SF" and "Software Standby Mode + SF" together with a multimedia work load and flood ping without packet drop. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Magnus Damm authored
This patch updates the exception handling in the sleep code for SuperH Mobile. With the patch applied the sleep code always rewrites the VBR and resumes from the exception vector, re-initializes hardware and jumps straight to the original interrupt vector. Tested on sh7722 and sh7724 with "Sleep Mode", "Sleep Mode + SF" and "Software Standby Mode + SF" with CONFIG_SUSPEND. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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- 16 Aug, 2009 2 commits
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Matt Fleming authored
Also, remove the "fix" to DW_CFA_def_cfa_register where we reset the frame's cfa_offset to 0. This action is incorrect when handling DW_CFA_def_cfa_register as the DWARF spec specifically states that the previous contents of cfa_offset should be used with the new register. The reason that I thought cfa_offset should be reset to 0 was because it was being assigned a bogus value prior to executing the DW_CFA_def_cfa_register op. It turns out that the bogus cfa_offset value came from interpreting .cfi_escape pseudo-ops (those used by the GNU extensions) as CFA_DW_def_cfa ops. Signed-off-by: Matt Fleming <matt@console-pimps.org>
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Matt Fleming authored
The previous hack for calculating the return address for the first frame we unwind (dwarf_unwinder_dump) didn't always work. The problem was that it assumed once it read the rule for calculating the return address, there would be no new rules for calculating it. This isn't true because the way in which the CFA is calculated can change as you progress through a function and the return address is figured out using the CFA. Therefore, the way to calculate the return address can change. So, instead of using some offset from the beginning of dwarf_unwind_stack which is just a flakey approach, and instead of executing instructions from the FDE until the return address is setup, we now figure out the pc in dwarf_unwind_stack() just before we call dwarf_cfa_execute_insns(). Signed-off-by: Matt Fleming <matt@console-pimps.org>
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- 15 Aug, 2009 6 commits
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Paul Mundt authored
This uses the BITS export as per x86 in order to allow the same Makefile to be used. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored
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Magnus Damm authored
This patch updates the SuperH Mobile sleep assembly code with support for DBSC memory controller found in the sh7724 processor. Without this fix the memory hooked up to the sh7724 processor will never enter self-refresh mode before suspending to ram. The effect of this is that the memory contents most likeley will be lost upon resume which may or may not be what you want. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Magnus Damm authored
This patch updates the Solution Engine 7724 board code to use in-SoC KEYSC resources for the keyboard platform device. Using the in-SoC key scan controller fixes a crash-during-resume issue. Without this patch the KEYSC hardware block located in the board specific FPGA is used together with an external IRQ which is routed through the FPGA and handled by some board specific demux code. This board specific FPGA interrupt code does not implement desc->set_wake() so the enable_irq_wake() call in the sh_keysc driver will fail at suspend-to-ram time and the disable_irq_wake() will bomb out when resuming. Changing the platform data to use the in-SoC KEYSC hardware makes the se7724 board support code less special which is a good thing. Also, the board specific KEYSC pin setup code selects in-SoC pin functions already which makes the current FPGA platform device data look like a typo. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Magnus Damm authored
This patch updates the SuperH CMT driver with suspend and resume callbacks for the suspend-to-ram case. This patch stops the CMT channel at suspend time to avoid unwanted wake up events. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Magnus Damm authored
This patch updates the SuperH Mobile LCDC driver to skip over disabled channels. Without this patch suspend-to-ram operation will crash if deferred io is enabled. Signed-off-by: Magnus Damm <damm@igel.co.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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- 14 Aug, 2009 7 commits
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Matt Fleming authored
The way that the CFA is calculated can change as we progress through a function. If we see a DW_CFA_def_cfa_register op we need to reset the frame's cfa_offset value which may have been previously setup. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored
This implements EXPMASK initialization code for SH-4A parts, where it is possible to disable compat features that will go away in newer cores. Presently this includes disabling support for non-nop instructions in the rte delay slot, as well as a sleep instruction being placed in a delay slot (neither of which the kernel does any longer). As a result of this, any future offenders will have illegal slot exceptions generated for them. Associative writes for the memory-mapped cache array are still left enabled, until such a point that special cache operations for SH-4A are provided to move off of the current (and rather dated) SH-4 versions. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored
Future SH parts do not support any instruction but a nop in the rte delay slot, so make the change for all offending parts. SH-5 is excluded from this, and already has its own set of restrictions with regards to rte delay slot handling. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored
This inserts a ULONG_MAX entry at the end of the valid entries in the stack trace buffer so the default code doesn't need to scan to the end of available slots. This also makes the trace buffer termination behaviour consistent with the other architectures. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored
This flags the default unwinder as reliable, as it tends to be reliable enough for the purposes of the stacktrace buffer. We leave the unreliable cases for the unwind methods that we know to be completely broken. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored
This adopts the reliability checks from the x86 stacktrace code so known bad addresses are not recorded in the stack trace buffer. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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Paul Mundt authored
save_stack_trace_tsk() and friends can be called from atomic context (as triggered by latencytop), and subsequently hit two problematic allocation points that were using GFP_KERNEL (these were dwarf_unwind_stack() and dwarf_frame_alloc_regs()). Convert these over to GFP_ATOMIC and get latencytop working with the DWARF unwinder. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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- 13 Aug, 2009 4 commits
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Linus Torvalds authored
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Linus Torvalds authored
free_irq() can remove an irqaction while the corresponding interrupt is in progress, but free_irq() sets action->thread to NULL unconditionally, which might lead to a NULL pointer dereference in handle_IRQ_event() when the hard interrupt context tries to wake up the handler thread. Prevent this by moving the thread stop after synchronize_irq(). No need to set action->thread to NULL either as action is going to be freed anyway. This fixes a boot crash reported against preempt-rt which uses the mainline irq threads code to implement full irq threading. [ tglx: removed local irqthread variable ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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Paul Mundt authored
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Matt Fleming authored
Trying to figure out the best value for DWARF_ARCH_UNWIND_OFFSET is tricky at best. Various things can change the size (and offset from the beginning of the function) of the prologue. Notably, turning on ftrace adds calls to mcount at the beginning of functions, thereby pushing the prologue further into the function. So replace DWARF_ARCH_UNWIND_OFFSET with some code that continues to execute CFA instructions until the value of return address register is defined. This is safe to do because we know that the return address must have been pushed onto the frame before our first function call; we just can't figure out where at compile-time. Signed-off-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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