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path: root/drivers/mtd/devices/bcm47xxsflash.c
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2016-11-07mtd: bcm47xxsflash: use uncached MMIO access for BCM53573Rafał Miłecki
BCM53573 is a new series of Broadcom's SoCs. It's based on ARM and uses this old ChipCommon-based flash access. Early tests resulted in flash corruptions that were tracked down to using cached MMIO for flash read access. Switch to ioremap_nocache conditionally to support BCM53573 and don't break performance on old MIPS devices. Signed-off-by: Rafał Miłecki <rafal@milecki.pl> Reviewed-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2016-04-04mtd: bcm47xxsflash: use ioremap_cache() instead of KSEG0ADDR()Brian Norris
Using KSEG0ADDR makes code highly MIPS dependent and not portable. Thanks to the fix a68f376 ("MIPS: io.h: Define `ioremap_cache'") we can use ioremap_cache which is generic and supported on MIPS as well now. KSEG0ADDR was translating 0x1c000000 into 0x9c000000. With ioremap_cache we use MIPS's __ioremap (and then remap_area_pages). This results in different address (e.g. 0xc0080000) but it still should be cached as expected and it was successfully tested with BCM47186B0. Other than that drivers/bcma/driver_chipcommon_sflash.c nicely setups a struct resource for access window, but we wren't using it. Use it now and drop duplicated info. Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
2015-10-13mtd: devices: bcm47xxflash: show parent device in sysfsFrans Klaver
Fix a bug where mtd parent device symlinks aren't shown in sysfs. While at it, make use of the default owner value set by mtdcore. Signed-off-by: Frans Klaver <fransklaver@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-10-20mtd: devices: drop owner assignment from platform_driversWolfram Sang
A platform_driver does not need to set an owner, it will be populated by the driver core. Signed-off-by: Wolfram Sang <wsa@the-dreams.de>
2013-08-30mtd: bcm47xxsflash: writing supportRafał Miłecki
Tested with BCM4706. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: bcm47xxsflash: implement erasing supportRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: bcm47xxsflash: convert to module_platform_driver instead of init/exitLibo Chen
convert to module_platform_driver instead of init/exit Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Signed-off-by: Libo chen <libo.chen@huawei.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-30mtd: bcm47xxsflash: convert kzalloc to avoid invalid accessLibo Chen
mtd is just member of bcm47xxsflash, so we should free bcm47xxsflash not its member. So I use devm_kazlloc instead of kazlloc to avoid it. * Changelog: convert to devm_kzalloc Signed-off-by: Libo chen <libo.chen@huawei.com> Suggested-by: Andy Shevchenko <andy.shevchenko@gmail.com> Reviewed-by: Andy Shevchenko <andy.shevchenko@gmail.com> [Brian: fixed conflicts] Signed-off-by: Brian Norris <computersforpeace@gmail.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-05mtd: bcm47xxsflash: implement polling chip statusRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-08-05mtd: bcm47xxsflash: implement ChipCommon R/W opsRafał Miłecki
They are needed for erasing/writing. Use a magic pointers and small functions to prepare code for adding other buses support in the future (like SSB). Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05mtd: bcm47xxsflash: store info about flash typeRafał Miłecki
It's going to be needed for erase and write operations, they differ between Atmel and ST flashes. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05mtd: bcm47xxsflash: keep a reference to the BCMARafał Miłecki
To implement erase and write support we need to "talk" with ChipCommon BCMA core which serial flash it attached to. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-04-05mtd: devices: add const qualifiersArtem Bityutskiy
Be a bit stricter and add few more 'const' qualifiers. Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2013-02-04mtd: bcm47xxsflash: adjust names of bus-specific functionsRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: bcm47xxsflash: register this as normal driverHauke Mehrtens
When platform_driver_probe() is used and no device is registered for this driver -ENODEV is returned and and error message is shown. Not all BCM47xx SoC have a serial flash chip controller and chip and for them an error message was shown. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: bcm47xxsflash: write number of written bytesHauke Mehrtens
The callback assumes the number of read bytes is written to retlen. Signed-off-by: Hauke Mehrtens <hauke@hauke-m.de> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2013-02-04mtd: bcm47xxsflash: add own struct for abstrating bus typeRafał Miłecki
Signed-off-by: Rafał Miłecki <zajec5@gmail.com>
2012-11-22mtd: remove use of __devexitBill Pemberton
CONFIG_HOTPLUG is going away as an option so __devexit is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-11-22mtd: remove use of __devexit_pBill Pemberton
CONFIG_HOTPLUG is going away as an option so __devexit_p is no longer needed. Signed-off-by: Bill Pemberton <wfp5p@virginia.edu> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-09-29mtd: basic (read only) driver for BCMA serial flashRafał Miłecki
This registers MTD driver for serial flash platform device. Right now it supports reading only, writing still has to be implemented. Artem: minor amendments. Signed-off-by: Rafał Miłecki <zajec5@gmail.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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