From mboxrd@z Thu Jan 1 00:00:00 1970 From: Abhishek Sahu Subject: [PATCH 0/5] Update for removing driver specific BBM functions Date: Fri, 6 Jul 2018 13:21:54 +0530 Message-ID: <1530863519-5564-1-git-send-email-absahu@codeaurora.org> Mime-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: base64 Return-path: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-mtd" Errors-To: linux-mtd-bounces+gldm-linux-mtd-36=gmane.org@lists.infradead.org To: Boris Brezillon , Miquel Raynal Cc: linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, Marek Vasut , Abhishek Sahu , linux-mtd@lists.infradead.org, Richard Weinberger , Andy Gross , Brian Norris , David Woodhouse List-Id: linux-arm-msm@vger.kernel.org VGhpcyBwYXRjaCBzZXJpZXMgZGVhbHMgbWFpbmx5IHdpdGggcmVtb3ZpbmcgZHJpdmVyIHNwZWNp ZmljIGJhZCBibG9jawpmdW5jdGlvbnMgYW5kIHNvbWUgbWlub3IgZml4aW5nL2NsZWFudXAuCgox LiBXaGVuIGluaXRpYWwgc3VwcG9ydCBmb3IgdGhpcyBkcml2ZXIgd2FzIGFkZGVkIFsxXSwgdGhl biB0aGUKICAgcGxhbiB3YXMgdG8gcmVtb3ZlIHRoZXNlIGRyaXZlciBzcGVjaWZpYyBmdW5jdGlv bnMgd2hlbiBOQU5EIGJhc2UKICAgbGF5ZXIgaGFzIHN1cHBvcnQgZm9yIGRvaW5nIHJhdyByZWFk L3dyaXRlIGZvciBiYWQgYmxvY2sgcmVsYXRlZAogICB0aGluZ3MuIE1vdmluZyB0byByYXcgcmVh ZC93cml0ZSBzZWVtcyB0byB0YWtlIG1vcmUgdGltZSBzbyB0aGlzIHBhdGNoCiAgIHNlcmllcyBp bXBsZW1lbnRlZCBhbHRlcm5hdGUgbG9naWMgZm9yIHJlYWRpbmcvd3JpdGluZyBiYWQgYmxvY2sg d2l0aAogICBub3JtYWwgcmVhZC93cml0ZSBpdHNlbGYuIFRoaXMgYWx0ZXJuYXRlIGxvZ2ljIHJl bGllcyBvbiBzb21lCiAgIGFzc3VtcHRpb24gd2hpY2ggc2VlbXMgdG8gYmUgYmV0dGVyIHRoYW4g ZHJpdmVyIHNwZWNpZmljIGZ1bmN0aW9ucyBhbmQKICAgcHJvdmlkZSBtb3JlIGZ1bmN0aW9uYWxp dHkuIFNvbWUgZGlzY3Vzc2lvbiByZWdhcmRpbmcgaXQgaGFzIGFscmVhZHkKICAgaGFwcGVuZWQg aW4gWzJdLgoKMi4gU29tZSBwYXJ0IG9mIGNvZGUgaXMgZHVwbGljYXRlZCBpbiBldmVyeSByZWFk L3dyaXRlIGZ1bmN0aW9uCiAgIHNvIGNsZWFuIHVwIHRoZSBjb2RlIGJ5IG1ha2luZyBoZWxwZXIg ZnVuY3Rpb24uCgozLiBCb290bG9hZGVycyBkb2VzIGFjY2VzcyBwcm90ZWN0aW9uIGZvciBzb21l IG9mIHRoZSBOQU5ECiAgIHJlZ2lzdGVycyB3aGljaCBnZW5lcmF0ZXMgZmV3IHdyaXRlIGVycm9y cyBpZiBpdCBpcyBlbmFibGVkLgoKNC4gQ3JlYXRlIFJBTSBiYXNlZCBCQlQgdGFibGUuIEZsYXNo IGJhc2VkIEJCVCB0YWJsZSBjYW7igJl0IGJlCiAgIHVzZWQgc2luY2Ugb3VyIGJvb3Rsb2FkZXIg ZG9lcyBub3QgaGF2ZSBzdXBwb3J0IGZvciB0aGUgc2FtZS4KCioqVGhpcyBwYXRjaCBzZXJpZXMg aXMgcmViYXNlZCBvdmVyIGxpbnV4LW5leHQgd2l0aCBQQVRDSCBbM10KClsxXTogaHR0cDovL3Bh dGNod29yay5vemxhYnMub3JnL3BhdGNoLzUwODU2NS8KWzJdOiBodHRwczovL3BhdGNod29yay5v emxhYnMub3JnL3BhdGNoLzkyMDU2My8KWzNdOiBodHRwczovL3BhdGNod29yay5vemxhYnMub3Jn L3BhdGNoLzkzODYzMS8KCkFiaGlzaGVrIFNhaHUgKDUpOgogIG10ZDogcmF3bmFuZDogcWNvbTog cmVtb3ZlIGRyaXZlciBzcGVjaWZpYyBiYWQgYmxvY2sgY2hlY2sgZnVuY3Rpb24KICBtdGQ6IHJh d25hbmQ6IHFjb206IHJlbW92ZSBkcml2ZXIgc3BlY2lmaWMgYmxvY2tfbWFya2JhZCBmdW5jdGlv bgogIG10ZDogcmF3bmFuZDogcWNvbTogZml4IE5BTkQgcmVnaXN0ZXIgd3JpdGUgZXJyb3JzCiAg bXRkOiByYXduYW5kOiBxY29tOiB1cGRhdGUgQkJUIHJlbGF0ZWQgZmxhZ3MKICBtdGQ6IHJhd25h bmQ6IHFjb206IHJlb3JnYW5pemF0aW9uIGJ5IHJlbW92aW5nIHJlYWQvd3JpdGUgaGVscGVycwoK IGRyaXZlcnMvbXRkL25hbmQvcmF3L3Fjb21fbmFuZGMuYyB8IDQzOSArKysrKysrKysrKysrKy0t LS0tLS0tLS0tLS0tLS0tLS0tLS0tLQogMSBmaWxlIGNoYW5nZWQsIDE2MiBpbnNlcnRpb25zKCsp LCAyNzcgZGVsZXRpb25zKC0pCgotLSAKUVVBTENPTU0gSU5ESUEsIG9uIGJlaGFsZiBvZiBRdWFs Y29tbSBJbm5vdmF0aW9uIENlbnRlciwgSW5jLgppcyBhIG1lbWJlciBvZiBDb2RlIEF1cm9yYSBG b3J1bSwgaG9zdGVkIGJ5IFRoZSBMaW51eCBGb3VuZGF0aW9uCgoKX19fX19fX19fX19fX19fX19f X19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fX19fCkxpbnV4IE1URCBkaXNjdXNzaW9u IG1haWxpbmcgbGlzdApodHRwOi8vbGlzdHMuaW5mcmFkZWFkLm9yZy9tYWlsbWFuL2xpc3RpbmZv L2xpbnV4LW10ZC8K From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.codeaurora.org ([198.145.29.96]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fbLXT-000411-8x for linux-mtd@lists.infradead.org; Fri, 06 Jul 2018 07:52:24 +0000 From: Abhishek Sahu To: Boris Brezillon , Miquel Raynal Cc: David Woodhouse , Brian Norris , Marek Vasut , Richard Weinberger , linux-arm-msm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mtd@lists.infradead.org, Andy Gross , Abhishek Sahu Subject: [PATCH 0/5] Update for removing driver specific BBM functions Date: Fri, 6 Jul 2018 13:21:54 +0530 Message-Id: <1530863519-5564-1-git-send-email-absahu@codeaurora.org> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , This patch series deals mainly with removing driver specific bad block functions and some minor fixing/cleanup. 1. When initial support for this driver was added [1], then the plan was to remove these driver specific functions when NAND base layer has support for doing raw read/write for bad block related things. Moving to raw read/write seems to take more time so this patch series implemented alternate logic for reading/writing bad block with normal read/write itself. This alternate logic relies on some assumption which seems to be better than driver specific functions and provide more functionality. Some discussion regarding it has already happened in [2]. 2. Some part of code is duplicated in every read/write function so clean up the code by making helper function. 3. Bootloaders does access protection for some of the NAND registers which generates few write errors if it is enabled. 4. Create RAM based BBT table. Flash based BBT table can’t be used since our bootloader does not have support for the same. **This patch series is rebased over linux-next with PATCH [3] [1]: http://patchwork.ozlabs.org/patch/508565/ [2]: https://patchwork.ozlabs.org/patch/920563/ [3]: https://patchwork.ozlabs.org/patch/938631/ Abhishek Sahu (5): mtd: rawnand: qcom: remove driver specific bad block check function mtd: rawnand: qcom: remove driver specific block_markbad function mtd: rawnand: qcom: fix NAND register write errors mtd: rawnand: qcom: update BBT related flags mtd: rawnand: qcom: reorganization by removing read/write helpers drivers/mtd/nand/raw/qcom_nandc.c | 439 ++++++++++++++------------------------ 1 file changed, 162 insertions(+), 277 deletions(-) -- QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum, hosted by The Linux Foundation