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* mtd: nand: denali: Update to Linux-5.9Sascha Hauer2020-11-101-1214/+1016
| | | | | | | The denali NAND driver is in an hopeless outdated state, it can't even check the ECC data. Throw in the denali driver from Linux-5.9. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: nand: Update to Linux-5.9Sascha Hauer2020-11-101-38/+29
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This updates the barebox NAND layer and parts of the mtd layer to Linux-5.9. This patch is huge, but the barebox NAND layer is so far away from the Linux NAND layer that a step by step update would have taken ages. Unlike Linux barebox has functions to mark a block as good. This feature has been preserved. Also barebox used to make NAND write support optional, this feature is lost during the update for the sake of better compatibility to the Linux NAND layer. This patch has been tested: - GPMI aka nand_mxs on i.MX6 - nand_imx on i.MX25 - nand_omap_gpmc on AM335x - atmel_nand on Atmel sama5d3 - nand_denali on SoCFPGA Currently untested: - nand_orion - nand_mrvl_nfc - nand_s3c24xx The nand_denali driver is tested with the update of that driver to Linux-5.9 following in the next patch. I could only test the drivers with the NAND chips found on my boards, so there's still enough room for regressions, especially given that the NAND drivers themselves are mostly not updated. With the NAND layer being up-to-date with Linux it should hopefully be easy to update drivers to their Linux counterpart as well if necessary. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: nand: denali: Drop multichip supportSascha Hauer2020-11-091-16/+8
| | | | | | | | Current multichip support doesn't fir well into the coming update to the NAND layer. Remove it for now, it will be added back when the denali NAND driver is updated to current Linux. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: nand: move function hooks to struct nand_legacySascha Hauer2020-11-091-5/+5
| | | | | | | Linux had moved the traditional nand function hooks to an extra struct nand_legacy. Do the same in barebox for compatibility. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: rename class_dev to devSascha Hauer2020-11-091-1/+1
| | | | | | | | The mtds own device is named 'dev' in the Kernel whereas it's named 'class_dev' in barebox. Rename it to 'dev' for better compatilibility to the Kernel. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: Use classdev->parentSascha Hauer2020-11-091-1/+1
| | | | | | | | | | Instead of mtd->parent we can use mtd->classdev.parent which points to the same device. With this we can remove the 'parent' member of struct mtd_info. This member exists in the Linux kernel as well, but is of type struct mtd_info, so this is done as preparation to re-add mtd->parent with the same type as in Linux. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: nand: Pass struct nand_chip aroundSascha Hauer2020-11-061-40/+40
| | | | | | | | | Traditionally Linux passed a struct mtd_info * around as context between the different functions. This has been changed to a struct nand_chip *. Do the same for barebox as well as another step towards updating the NAND layer to current Linux. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* treewide: use cpu_relax() where appropriateAhmad Fatoum2020-04-151-5/+3
| | | | | | | | Instead of doing /* cpu_relax(); */ barrier(); on upstream uses of cpu_relax(), just use the new cpu_relax() #define directly. Signed-off-by: Ahmad Fatoum <a.fatoum@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: nand: Embed struct mtd_info into struct nand_chipSascha Hauer2019-08-261-18/+22
| | | | | | | | | Similar to what is done in the Kernel. In the Kernel we have a struct nand_device embedded into struct nand_chip and the nand_device has an mtd_info embedded into it. Until we have struct nand_device we embed mtd_info directly into the nand_chip. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: nand: denali: Add variables for mtd_info and nand_chipSascha Hauer2019-08-261-51/+52
| | | | | | | | Accessing the mtd_info from the nand_chip will change in the next patch, so instead of accessing it each time when used create a variable for mtd_info to keep the next patch smaller. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* Merge branch 'for-next/mtd'Sascha Hauer2018-12-071-1/+1
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| * mtd: nand: denali: quiet down driverSteffen Trumtrar2018-11-291-1/+1
| | | | | | | | | | | | | | | | Instead of always printing the timing registers, make it a debug information only. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* | nand: denali: remove undefined GFP_DMA flagEnrico Jorns2018-11-191-1/+1
|/ | | | | | | | | | | | This was a remnant from porting kernel code to barebox. While being uncritical so far, this will now cause a compiler error since kzalloc is not a define but a static inline function. As the kzalloc() 'mode' argument was ignored before and still will be, it is safe to remove the parameter. Signed-off-by: Enrico Jorns <ejo@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* nand: denali: get rid of compile-time debug informationSteffen Trumtrar2016-09-261-12/+0
| | | | | | | | Remove dev_dbgs containing __FILE__ and __LINE__ and no other interesting debug informations. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* nand: denali: use is_timeout in while loopSteffen Trumtrar2016-09-261-16/+23
| | | | | | | | | Instead of using udelay and a countdown, use the is_timeout function. Also, move the code closer to the kernel version, i.e. check for the correct bank and clean the interrupt status. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* nand: denali: use correct interrupts in read_pageSteffen Trumtrar2016-09-261-2/+3
| | | | | | | | The interrupt mask is incorrect in case of HW error correction. The driver will time out waiting for the wrong interrupts. Signed-off-by: Steffen Trumtrar <s.trumtrar@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd: nand_denali: don't include arch headerLucas Stach2015-10-141-1/+0
| | | | | | | | It causes build failures on other arches than socfpga and the driver doesn't use anything provided by this header. Signed-off-by: Lucas Stach <l.stach@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd denali: pass col argument to READID operationEnrico Jorns2015-09-231-1/+1
| | | | | | | | | | | | | A read id operation followed by 0x00 reads the device ID while a read id operation followed by 0x20 reads the possible ONFI identifier. As the READID function did not propagate the second id parameter but had a hard-coded call for 0x90 0x00, reading the ONFI identifier was not possible and thus chips werde not detected (tested with MT29F8G08ABABAWP) Signed-off-by: Enrico Jorns <ejo@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
* mtd nand_denali: Add denali nand driverEnrico Jorns2015-09-231-0/+1559
The driver is based on the denali driver from the linux kernel Signed-off-by: Enrico Jorns <ejo@pengutronix.de> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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