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path: root/sound/pci/au88x0/au88x0.h
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2006-10-05IRQ: Maintain regs pointer globally rather than passing to IRQ handlersDavid Howells
Maintain a per-CPU global "struct pt_regs *" variable which can be used instead of passing regs around manually through all ~1800 interrupt handlers in the Linux kernel. The regs pointer is used in few places, but it potentially costs both stack space and code to pass it around. On the FRV arch, removing the regs parameter from all the genirq function results in a 20% speed up of the IRQ exit path (ie: from leaving timer_interrupt() to leaving do_IRQ()). Where appropriate, an arch may override the generic storage facility and do something different with the variable. On FRV, for instance, the address is maintained in GR28 at all times inside the kernel as part of general exception handling. Having looked over the code, it appears that the parameter may be handed down through up to twenty or so layers of functions. Consider a USB character device attached to a USB hub, attached to a USB controller that posts its interrupts through a cascaded auxiliary interrupt controller. A character device driver may want to pass regs to the sysrq handler through the input layer which adds another few layers of parameter passing. I've build this code with allyesconfig for x86_64 and i386. I've runtested the main part of the code on FRV and i386, though I can't test most of the drivers. I've also done partial conversion for powerpc and MIPS - these at least compile with minimal configurations. This will affect all archs. Mostly the changes should be relatively easy. Take do_IRQ(), store the regs pointer at the beginning, saving the old one: struct pt_regs *old_regs = set_irq_regs(regs); And put the old one back at the end: set_irq_regs(old_regs); Don't pass regs through to generic_handle_irq() or __do_IRQ(). In timer_interrupt(), this sort of change will be necessary: - update_process_times(user_mode(regs)); - profile_tick(CPU_PROFILING, regs); + update_process_times(user_mode(get_irq_regs())); + profile_tick(CPU_PROFILING); I'd like to move update_process_times()'s use of get_irq_regs() into itself, except that i386, alone of the archs, uses something other than user_mode(). Some notes on the interrupt handling in the drivers: (*) input_dev() is now gone entirely. The regs pointer is no longer stored in the input_dev struct. (*) finish_unlinks() in drivers/usb/host/ohci-q.c needs checking. It does something different depending on whether it's been supplied with a regs pointer or not. (*) Various IRQ handler function pointers have been moved to type irq_handler_t. Signed-Off-By: David Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
2006-07-12[ALSA] Fix section mismatch errors in ALSA PCI driversTakashi Iwai
Fixed 'section mismatch' errors in ALSA PCI drivers: - removed invalid __devinitdata from pci id tables - fix/remove __devinit of functions called in suspend/resume Signed-off-by: Takashi Iwai <tiwai@suse.de> Signed-off-by: Jaroslav Kysela <perex@suse.cz>
2006-04-12[ALSA] au88x0 - clean up __devinit/__devexitDale Sedivec
Modules: au88x0 driver Removed all use of __devinit/__devexit and init.h from headers. Any attributes given in the prototype but not in the function definition have been moved to the definition. An exception is vortex_eq_free: I removed the __devexit attribute because vortex_eq_free is called from vortex_core_shutdown, and vortex_core_shutdown may be called from __devinit snd_vortex_create. Compile tested with allyesconfig and allmodconfig. Signed-off-by: Dale Sedivec <dale@codefu.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-03-22[ALSA] au88x0 - 64bit arch fixesTakashi Iwai
Modules: au88x0 driver Fix the driver codes to run on 64bit architectures. The patch taken from ALSA BTS bug#1047. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03[ALSA] au88x0: Remove unneeded call to pci_dma_supported()Tobias Klauser
Modules: au88x0 driver pci_dma_supported() is called right before pci_set_dma_mask() which already calls pci_dma_supported(). The attached patch removes the unneeded call to pci_dma_supported() Additionally the custom VORTEX_DMA_MASK macro is replaced by DMA_32BIT_MASK from linux/dma-mapping.h Signed-off-by: Tobias Klauser <tklauser@nuerscht.ch> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2006-01-03[ALSA] Remove xxx_t typedefs: PCI AU88x0Takashi Iwai
Modules: au88x0 driver Remove xxx_t typedefs from the PCI AU88x0 drivers. Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-11-04[ALSA] au88x0: codec access procs for multiple AC97 codecsSasha Khapyorsky
Modules: au88x0 driver This patch extends au88x0 AC97 codec access procedures to handle multiple codecs properly. Signed-off-by: Sasha Khapyorsky <sashak@smlink.com> Signed-off-by: Takashi Iwai <tiwai@suse.de>
2005-04-16Linux-2.6.12-rc2Linus Torvalds
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!