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path: root/drivers/mtd/nand/denali.h
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2017-03-24mtd: nand: denali: use int where no reason to use fixed width variableMasahiro Yamada1-4/+4
The page number is generally stored in an integer type variable. The uint16_t does not have enough width. I see no reason to use uint32_t for other members, either. Just use int. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2017-03-24mtd: nand: denali: introduce capability flagMasahiro Yamada1-0/+1
The Denali NAND controller IP has various customizable features. SoC vendors can choose desired functions when a delivery RTL is created. It means there are several variants for this IP. For example, the Intel version is equipped with 32bit DMA, whereas the IP for UniPhier SoC family with 64bit DMA. This driver was originally written for some Intel platforms with Intel specific things hard-coded. What is worse, the revision register of this IP does not work to distinguish such features. We need to do something to make the driver available for other SoCs. Let's introduce a caps member to the denali_nand_info structure to switch on/off various features. Also, add struct denali_dt_data to store the capability associated with compatible string. Boris suggested this approach in discussion [1] instead of a new DT property for every feature. [1] https://lkml.org/lkml/2016/3/29/142 Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2017-03-24mtd: nand: denali: consolidate INTR_STATUS__* and INTR_EN__* macrosMasahiro Yamada1-43/+18
The interrupts are enabled by INTR_EN register, then asserted interrupts can be observed via INTR_STATUS register. The bit fields are identical between INTR_EN and INTR_STATUS, so we can merge the bit field macros. Likewise for DATA_INTR. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2017-03-24mtd: nand: denali: fix comment of denali_nand_info::flash_memMasahiro Yamada1-2/+2
The same comment "Mapped io reg base address" for flash_reg and flash_mem probably due to the mistake of copy-paste work. Of course, the latter is not the register base address. Reword the comments using the terminology in the Denali User's Guide. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2017-03-24mtd: nand: denali: remove more unused struct membersMasahiro Yamada1-2/+0
These members are not used at all. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2017-03-24mtd: nand: denali: remove unused CONFIG option and macrosMasahiro Yamada1-99/+0
All of these macros are not used at all. CONFIG_MTD_NAND_DENALI_SCRATCH_REG_ADDR is not used for anything but defining SCRATCH_REG_ADDR. The config option should go away as well. I am removing some register macros. They are not used, and do not exist in recent IP versions. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2016-11-19mtd: nand: denali: remove unused struct member totalblks, blksperchipMasahiro Yamada1-2/+0
The denali->blksperchip is set, but not referenced any more. The denali->totalblks is used only for calculating denali->blksperchip. Both of them are unneeded. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2016-11-19mtd: nand: denali: remove detect_partition_feature()Masahiro Yamada1-9/+0
The denali->fwblks is set by detect_partition_feature(), but it is not referenced from anywhere. That means the struct member fwblks and the whole of detect_partition_feature() are unneeded. The comment block implies this function is only for Intel platforms. I found drivers/staging/spectra used to exist, but it was deleted by commit be7f39c5ecf5 ("Staging: delete spectra driver") 5 years ago. So, I guess nobody would need this function any more. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2016-11-19mtd: nand: denali: remove unused struct member denali_nand_info::idxMasahiro Yamada1-1/+0
The struct member "idx" was used as an index for debug_array long ago, but the DEBUG_DENALI feature was removed by commit 7cfffac06ca0 ("nand/denali: use dev_xx debug function to replace nand_dbg_print and some printk"). Since then, this has been only initialized, but never referenced. Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com> Reviewed-by: Marek Vasut <marek.vasut@gmail.com> Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
2015-12-19mtd: nand: denali: use the mtd instance embedded in struct nand_chipBoris BREZILLON1-1/+0
struct nand_chip now embeds an mtd device. Make use of this mtd instance. Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2015-09-29mtd: nand: denali: max_banks calculation changed in revision 5.1Graham Moore1-0/+2
Read Denali hardware revision number and use it to calculate max_banks, The encoding of max_banks changed in Denali revision 5.1. Signed-off-by: Graham Moore <grmoore@opensource.altera.com> [Brian: parentheses around macro arg] Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-09-18mtd: denali: fix include guard and license block of denali.hMasahiro Yamada1-23/+4
It looks like this header file is a concatenation of two headers. Anyway, the include guard should be renamed and placed at the correct postion and the license block in the middle should be deleted. Signed-off-by: Masahiro Yamada <yamada.m@jp.panasonic.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2014-01-12mtd: denali: kill the NAND_MAX_PAGESIZE/NAND_MAX_OOBSIZEHuang Shijie1-3/+1
This patch kills the NAND_MAX_PAGESIZE/NAND_MAX_OOBSIZE by the following way: 1.) change the @buf field of nand_buf{} from an array to a pointer. also remove the DENALI_BUF_SIZE macro. 2.) Before we call the nand_scan_ident, we allocate a temporary buffer whose size is PAGE_SIZE. 3.) After we finish the nand_scan_ident, we have already getten the page size and oob size. We will allocate the right buffer size again. Signed-off-by: Huang Shijie <shijie8@gmail.com> Reviewed-by: Josh Triplett <josh@joshtriplett.org> Signed-off-by: Brian Norris <computersforpeace@gmail.com>
2012-11-15mtd: denali: add a DT driverDinh Nguyen1-0/+1
Add a device tree version of the Denali NAND driver. Based on an original patch from Jamie Iles to add a MMIO version of this driver. Signed-off-by: Dinh Nguyen <dinguyen@altera.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2012-11-15mtd: denali: split the generic driver and PCI layerDinh Nguyen1-0/+4
The Denali controller can also be found in SoC devices attached to a simple bus. Move the PCI specific parts into denali_pci so that we can add a denali_dt that uses the same driver but for a device tree driver instead of a PCI based device. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
2011-05-25mtd: denali: detect the number of banksJamie Iles1-1/+1
Not all configurations of the Denali controller support 4 banks. The controller can support between 1 and 16 banks. Detect this from the design features register. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: denali: remove nearly-duplicated register definitionsJamie Iles1-314/+57
The controller has interrupt enable/status register pairs for each bank (along with ECC and status registers) that differ only in address offset. Rather than providing definitions for each register, make the address a macro so that it scales for devices with different numbers of banks. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2011-05-25mtd: denali: convert to generic DMA APIJamie Iles1-1/+1
Rather than using the PCI specific DMA API, convert to the generic DMA API so that we can use the Denali NAND controller on other bus types. Signed-off-by: Jamie Iles <jamie@jamieiles.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-11nand/denali: use dev_xx debug function to replace nand_dbg_print and some printkChuanxiao Dong1-18/+0
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-06mtd: denali: Add multi connected NAND supportChuanxiao Dong1-0/+1
Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-06mtd: denali: Remove set_ecc_config functionChuanxiao Dong1-0/+1
set_ecc_config function only set ECC_CORRECTION register, so move register setting to probe function. Since controller only support 15bit and 8bit ecc correction, updated nand ecc layout information. Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-06mtd: denali: Remove device_info_tag structureChuanxiao.Dong1-39/+4
Hi David, I sent 4 patches using my intel email account. If there is any problem about the format of these patches, I will resend them after I arrived at home by using my gmail account, and I will keep on using gmail account to send patches. Thanks. >From 242e3bf5e17f54b1df8cf285154a7c7a61ff62e9 Mon Sep 17 00:00:00 2001 From: Chuanxiao Dong <chuanxiao.dong@intel.com> Date: Fri, 6 Aug 2010 15:29:41 +0800 Subject: [PATCH 1/4] mtd: denali: Remove device_info_tag structure. Most of the variables in this structure are useless, so just remove this structure and relevant codes. Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-05mtd: denali: rename functions which is named by using capitalsChuanxiao Dong1-5/+0
rename these functions' name and remove additional declarations in header file Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-08-02mtd: denali.h: fixed checkpatch errorsDong, Chuanxiao1-82/+78
Fix all checkpatch.pl complaints. Artem: tweaked a little and fix tab indentations, so now this is not only about checkpatch, but also about making indentations look sane. Signed-off-by: Chuanxiao Dong <chuanxiao.dong@intel.com> Signed-off-by: Artem Bityutskiy <Artem.Bityutskiy@nokia.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2010-05-13mtd/nand: Add Intel Moorestown/Denali NAND supportJason Roberts1-0/+816
There is more work to be done on this but it is basically working now. Signed-off-by: Jason Roberts <jason.e.roberts@intel.com> Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
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