- 14 4月, 2010 2 次提交
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由 Linus Walleij 提交于
This introduce the field f_max into the mmci_platform_data, making it possible to pass in a desired block clocking frequency from a board configuration. This is often more desirable than using a module parameter. We keep the module parameter as a fallback as well as the default frequency specified for this parameter if a parameter is not provided. This also adds some kerneldoc style documentation to the platform data struct in mmci.h. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Linus Walleij 提交于
This adds support for an 8bit wide bus to the card (data lines MCIDAT0 through 7 exist) on the ST Micro version and alters the U300 platform to support this. Also add some ST_ prefix to the ST-specific registers. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 22 2月, 2010 1 次提交
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由 Linus Walleij 提交于
This removes the custom DBG macro in favor of the in-kernel dev_dbg() macro. Probably a leftover from a time when dev_dbg() didn't yet exist. Also remove a printk() in favor of dev_err(). Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 28 1月, 2010 1 次提交
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由 Linus Walleij 提交于
In the U300 some hardware bug makes the status flag not come up signalling a successful write (or anything else, like an error, for that matter) on write requests. This little quirk makes the writes work on U300. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 24 11月, 2009 1 次提交
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由 Linus Walleij 提交于
This fixes a leftover instance of using the 0x80 numeral instead of the new AMBA_VENDOR_ST enum in the MMCI/PL180 driver. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Acked-by: NJean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 01 10月, 2009 1 次提交
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由 Linus Walleij 提交于
The #ifdefs in the MMCI driver were erroneous and just masking a bug in the U300 generic GPIO implementation. This removes the ifdefs and fixes the U300 generic GPIO instead. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 23 9月, 2009 2 次提交
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由 Linus Walleij 提交于
This enables the use of a regulator to power the MMCI/PL180 PrimeCell. The OCR mask is calculated and voltage is set using the new MMC core functions for discovering voltage ranges in regulators. The platform translate_vdd function which basically controls the 4 lines out of the PL180 is disabled if you use a regulator instead. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Linus Walleij 提交于
This moves the mmci platform data definition struct away from arch/arm/include/asm/mach/mmc.h into the more proper place among the other primecells in include/linux/amba/mmci.h and at the same time renames it to "mmci.h", and also the struct in this file confusingly named mmc_platform_data has been renamed mmci_platform_data for clarity. Cc: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 16 9月, 2009 2 次提交
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由 Linus Walleij 提交于
This makes it possible to pass down the host controller capabilities for the MMCI driver using the platform data. It also provides the capabilties for the U300 implementation as an example, and makes sure the 4bit wide mode is set if this is requested by the ios() now that we can actually set that capability for a platform. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Linus Walleij 提交于
This breaks out the clock divider set-up code from the mmci_set_ios() code and surrounds the two register writes with a host lock so we don't get collisions if (in future code) two code paths want to change the clock divider at the same time as can be the case if we get something like pre/post- clock frequency change notifications soonish. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 12 9月, 2009 1 次提交
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由 Linus Walleij 提交于
This moves the primecell vendor enum definition inside vic.c out to linux/amba/bus.h where it belongs and replace any occurances of specific vendor ID:s with the respective enums instead. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 02 9月, 2009 1 次提交
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由 Linus Walleij 提交于
The recent addition of optional gpiolib support to check if a card was inserted or write protected was really not optional. It needs this ifdef to become optional so that U300 compiles, for example. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 09 7月, 2009 2 次提交
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由 Russell King 提交于
Use gpiolib where available (and when valid GPIOs are provided) for write protect/card detect status reporting. We fall back to the old 'status' method where gpiolib support is not available. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Rather than open coding the accessors for decoding peripheral IDs, use the macros already provided. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk> Acked-by: NLinus Walleij <linus.walleij@stericsson.com>
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- 11 6月, 2009 1 次提交
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由 Linus Walleij 提交于
I found the PrimeCell/AMBA Bus drivers distrusting the resource passed in as part of the struct amba_device abstraction. This patch removes all hard coded resource sizes found in the PrimeCell drivers and move the responsibility of this definition back to the platform/board device definition, which already exist and appear to be correct for all in-tree users of these drivers. We do this using the resource_size() inline function which was also replicated in the only driver using the resource size, so that has been changed too. The KMI_SIZE was left in kmi.h in case someone likes it. Test-compiled against Versatile and Integrator defconfigs, seems to work but I don't posess these boards and cannot test them. Signed-off-by: NLinus Walleij <linus.walleij@stericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 21 5月, 2009 1 次提交
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由 Alessandro Rubini 提交于
The second argument of the probe method points to the amba_id structure, so it's better passed with the correct type. None of the current in-tree drivers uses the pointer, so they have only been checked for a clean compile. Change suggested by Russell King. Signed-off-by: NAlessandro Rubini <rubini@unipv.it> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 04 5月, 2009 1 次提交
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由 Rabin Vincent 提交于
If MMC debugging is enabled, the mmci driver oopses because the DBG macro uses host->mmc before it is set. Set it earlier. Signed-off-by: NRabin Vincent <rabin@rab.in> Signed-off-by: NPierre Ossman <pierre@ossman.eu>
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- 13 3月, 2009 1 次提交
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由 Linus Walleij 提交于
This adds __devinit and __devexit macros to the module probe and remove functions in MMCI. Now includes the __devexit_p() thing too. Signed-off-by: NLinus Walleij <linus.walleij@ericsson.com> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 03 2月, 2009 1 次提交
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由 Linus Walleij 提交于
This patch adds support for the ST Microelectronics version of the PL180 PrimeCell. They use designer ID 0x80 and have a few alterations/bugfixes related to open drain and HW flow control. They also add some SDIO registers, I am unsure if these are in ST HW only or if this is things also added in later ARM revisions, but they are included in the mmci.h file for completeness. Signed-off-by: NLinus Walleij <linus.walleij@ericsson.com> Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>
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- 01 12月, 2008 1 次提交
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由 Russell King 提交于
Where devices only have one consumer, passing a consumer clock ID has no real benefit, and it only encourages wrong implementations of the clk API. Remove it. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 28 10月, 2008 1 次提交
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由 Linus Walleij 提交于
Fix fastpath issues Since mmci_request() can be called from a non-interrupt context, and does, during kernel init, causing a host of debug messages during boot if you enable spinlock debugging, we need to use the spinlock calls that save IRQ flags and restore them. Signed-off-by: NLinus Walleij <triad@df.lth.se> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 15 7月, 2008 1 次提交
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由 Pierre Ossman 提交于
Relax requirements on host controllers and only require that they do not report a transfer count than is larger than the actual one (i.e. a lower value is okay). This is how many other parts of the kernel behaves so upper layers should already be prepared to handle that scenario. This gives us a performance boost on MMC cards. Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>
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- 04 5月, 2008 1 次提交
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由 Linus Walleij 提交于
This fixes some two minor clk issues. The first is a comparison where a byte will probably wrap around to 0 instead of being saturated to 255, shouldn't be triggered very often but need fixing. The second is an attempt by the driver to adjust MCLK down to the maximum frequency according to the spec, so we don't accidentally overclock the PL18x block. None of the mach-{versatile|integrator|lh7a40x} that use it in-tree seem to have a problem with this (all are well below 100MHz, typically 33MHz), but some day there will be a problem. This is not applied on top of the earlier mmci patch for race condition but rather a clean 2.6.25, but I guess it applies without major protests anyway. Signed-off-by: NLinus Walleij <triad@df.lth.se> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 29 4月, 2008 1 次提交
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由 Linus Walleij 提交于
Updated version of 4446/1. This also drops the suggested comparison of host_remain for == 0, since that doesn't make sense (still works for us, too). We have verified that this patch solve race problems on atleast 2 archs at high frequencies. (Verbatim copy of old patch text below.) The patch below fixes a race condition in the ARM MMCI PL18x driver. If new data arrives in the FIFO while existing data is being read then we get a second iteration of the loop in mmci_pio_read. However host->size is not updated until after mmci_pio_read returns, so we get count = number of new bytes PLUS number of bytes already copied in the first iteration. This results in a FIFO underrun as we try and read mode data than is available. The fix is to compensating for data read on previous iterations when calculating the amount of data in the FIFO. Signed-off-by: NLinus Walleij <triad@df.lth.se> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 24 10月, 2007 1 次提交
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由 Jens Axboe 提交于
Do a full scan of the directory to try and be a bit more proactive, instead of waiting for things to break. Signed-off-by: NJens Axboe <jens.axboe@oracle.com>
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- 12 10月, 2007 1 次提交
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由 Nicolas Pitre 提交于
Using weight32() to determine if a value is a power of 2 is a rather heavi weight solution. The classic idiom is (x & (x - 1)) == 0, but the kernel already provide a is_power_of_2 function for it. Signed-off-by: NNicolas Pitre <nico@cam.org> Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>
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- 23 9月, 2007 2 次提交
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由 Pierre Ossman 提交于
Remove the BYTEBLOCK capability and let the broken hosts fail the requests with -EINVAL instead. Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>
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由 Pierre Ossman 提交于
Convert the MMC layer to use standard error codes and not its own, incompatible values. Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>
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- 26 7月, 2007 1 次提交
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由 Pierre Ossman 提交于
Make sure all headers in the files reflect their true position in the tree. Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>
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- 01 5月, 2007 2 次提交
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由 Pierre Ossman 提交于
Clean up the drivers/mmc directory by moving card and host drivers into subdirectories. Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>
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由 Pierre Ossman 提交于
All host drivers were #include:ing mmc/protocol.h just to get access to the OCR bit defines. Move these to host.h instead. Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>
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- 05 2月, 2007 2 次提交
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由 Pierre Ossman 提交于
Many controllers have an upper limit on the number of blocks that can be transferred in one request. Allow the host drivers to specify this and make sure we avoid hitting this limit. Also change the max_sectors field to avoid confusion. This makes it map less directly to the block layer limits, but as they didn't apply directly on MMC cards anyway, this isn't a great loss. Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>
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由 Pierre Ossman 提交于
Most controllers have an upper limit on the block size. Allow the host drivers to specify this and make sure we avoid hitting this limit. Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>
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- 09 1月, 2007 1 次提交
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由 Russell King 提交于
The MMCI driver might end up aborting the initial command and leaving the data part of the command sequence still in place. Avoid this problem by ensuring that any data sequence is properly cleared out when a command completes. Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 02 12月, 2006 1 次提交
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由 David Brownell 提交于
Now that mmc_host_ops can be constified, update the various drivers to constify those method tables and shrink the writable data segment. Signed-off-by: NDavid Brownell <dbrownell@users.sourceforge.net> Signed-off-by: NPierre Ossman <drzeus@drzeus.cx>
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- 05 10月, 2006 1 次提交
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由 David Howells 提交于
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: NDavid Howells <dhowells@redhat.com> (cherry picked from 1b16e7ac850969f38b375e511e3fa2f474a33867 commit)
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- 16 9月, 2006 2 次提交
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由 Russell King 提交于
Add a capability flag for drivers to set when they can perform multi- block transfers to cards _and_ correctly report the number of bytes transferred should an error occur. The last point is very important - if a driver reports more bytes than were actually accepted by the card and an error occurs, there is the possibility for data loss. Pierre Ossman provided the patch for wbsd and sdhci. Signed-off-by: NPierre Ossman <drzeus@drzeus.cx> Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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由 Russell King 提交于
Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>
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- 03 7月, 2006 1 次提交
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由 Thomas Gleixner 提交于
Signed-off-by: NThomas Gleixner <tglx@linutronix.de> Cc: Ingo Molnar <mingo@elte.hu> Cc: "David S. Miller" <davem@davemloft.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: NAndrew Morton <akpm@osdl.org> Signed-off-by: NLinus Torvalds <torvalds@osdl.org>
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- 01 7月, 2006 1 次提交
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由 Jörn Engel 提交于
Signed-off-by: NJörn Engel <joern@wohnheim.fh-wedel.de> Signed-off-by: NAdrian Bunk <bunk@stusta.de>
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