From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-we0-f169.google.com ([74.125.82.169]) by casper.infradead.org with esmtps (Exim 4.80.1 #2 (Red Hat Linux)) id 1WSMbU-0007DW-Nc for linux-mtd@lists.infradead.org; Tue, 25 Mar 2014 08:21:02 +0000 Received: by mail-we0-f169.google.com with SMTP id w62so78934wes.28 for ; Tue, 25 Mar 2014 01:20:36 -0700 (PDT) From: Lee Jones To: linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [RFC 10/47] mtd: nand: stm_nand_bch: initialise the Hamming Controller Date: Tue, 25 Mar 2014 08:19:27 +0000 Message-Id: <1395735604-26706-11-git-send-email-lee.jones@linaro.org> In-Reply-To: <1395735604-26706-1-git-send-email-lee.jones@linaro.org> References: <1395735604-26706-1-git-send-email-lee.jones@linaro.org> Cc: angus.clark@st.com, kernel@stlinux.com, lee.jones@linaro.org, linux-mtd@lists.infradead.org, pekon@ti.com, computersforpeace@gmail.com, dwmw2@infradead.org List-Id: Linux MTD discussion mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , 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 7333ad6..8ab8e7b 100644 --- a/drivers/mtd/nand/stm_nand_bch.c +++ b/drivers/mtd/nand/stm_nand_bch.c @@ -207,6 +207,41 @@ 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__); @@ -255,6 +290,7 @@ 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