From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755539AbaEAJ5d (ORCPT ); Thu, 1 May 2014 05:57:33 -0400 Received: from mail-we0-f176.google.com ([74.125.82.176]:63665 "EHLO mail-we0-f176.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755413AbaEAJ53 (ORCPT ); Thu, 1 May 2014 05:57:29 -0400 From: Lee Jones To: linux-kernel@vger.kernel.org Cc: computersforpeace@gmail.com, linux-mtd@lists.infradead.org, kernel@stlinux.com, Lee Jones Subject: [PATCH 11/47] mtd: nand: stm_nand_bch: initialise the Hamming Controller Date: Thu, 1 May 2014 10:56:18 +0100 Message-Id: <1398938214-17847-12-git-send-email-lee.jones@linaro.org> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1398938214-17847-1-git-send-email-lee.jones@linaro.org> References: <1398938214-17847-1-git-send-email-lee.jones@linaro.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Signed-off-by: Lee Jones --- drivers/mtd/nand/stm_nand_bch.c | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) diff --git a/drivers/mtd/nand/stm_nand_bch.c b/drivers/mtd/nand/stm_nand_bch.c index 19d090c..0c6aad2 100644 --- a/drivers/mtd/nand/stm_nand_bch.c +++ b/drivers/mtd/nand/stm_nand_bch.c @@ -365,6 +365,41 @@ static struct clk *nandi_clk_setup(struct nandi_controller *nandi, return clk; } +static void nandi_init_hamming(struct nandi_controller *nandi, int emi_bank) +{ + dev_dbg(nandi->dev, "%s\n", __func__); + + emiss_nandi_select(STM_NANDI_HAMMING); + + /* Reset and disable boot-mode controller */ + writel(BOOT_CFG_RESET, nandi->base + NANDHAM_BOOTBANK_CFG); + udelay(1); + writel(0x00000000, nandi->base + NANDHAM_BOOTBANK_CFG); + + /* Reset controller */ + writel(CFG_RESET, nandi->base + NANDHAM_FLEXMODE_CFG); + udelay(1); + writel(0x00000000, nandi->base + NANDHAM_FLEXMODE_CFG); + + /* Set EMI Bank */ + writel(0x1 << emi_bank, nandi->base + NANDHAM_FLEX_MUXCTRL); + + /* Enable FLEX mode */ + writel(CFG_ENABLE_FLEX, nandi->base + NANDHAM_FLEXMODE_CFG); + + /* Configure FLEX_DATA_READ/WRITE for 1-byte access */ + writel(FLEX_DATA_CFG_BEATS_1 | FLEX_DATA_CFG_CSN, + nandi->base + NANDHAM_FLEX_DATAREAD_CONFIG); + writel(FLEX_DATA_CFG_BEATS_1 | FLEX_DATA_CFG_CSN, + nandi->base + NANDHAM_FLEX_DATAREAD_CONFIG); + + /* RBn interrupt on rising edge */ + writel(NAND_EDGE_CFG_RBN_RISING, nandi->base + NANDHAM_INT_EDGE_CFG); + + /* Enable interrupts */ + nandi_enable_interrupts(nandi, NAND_INT_ENABLE); +} + static void nandi_init_bch(struct nandi_controller *nandi, int emi_bank) { dev_dbg(nandi->dev, "%s\n", __func__); @@ -413,6 +448,7 @@ static void nandi_init_controller(struct nandi_controller *nandi, int emi_bank) { nandi_init_bch(nandi, emi_bank); + nandi_init_hamming(nandi, emi_bank); } static int remap_named_resource(struct platform_device *pdev, -- 1.8.3.2