From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-pg0-x244.google.com ([2607:f8b0:400e:c05::244]) by bombadil.infradead.org with esmtps (Exim 4.85_2 #1 (Red Hat Linux)) id 1cDug0-0005Ww-GP for barebox@lists.infradead.org; Mon, 05 Dec 2016 14:55:34 +0000 Received: by mail-pg0-x244.google.com with SMTP id x23so16673219pgx.3 for ; Mon, 05 Dec 2016 06:55:13 -0800 (PST) From: Andrey Smirnov Date: Mon, 5 Dec 2016 06:54:35 -0800 Message-Id: <1480949684-18520-8-git-send-email-andrew.smirnov@gmail.com> In-Reply-To: <1480949684-18520-1-git-send-email-andrew.smirnov@gmail.com> References: <1480949684-18520-1-git-send-email-andrew.smirnov@gmail.com> List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "barebox" Errors-To: barebox-bounces+u.kleine-koenig=pengutronix.de@lists.infradead.org Subject: [PATCH 07/16] i.MX: iomuxv3: Add low-level pad code to headers To: barebox@lists.infradead.org Cc: Andrey Smirnov Add a basic low-level pad configuration function that can be used to implement early boot pin configuration code as well as shared with various iomuxv3 and vf610 drivers. Signed-off-by: Andrey Smirnov --- arch/arm/mach-imx/include/mach/iomux-v3.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) diff --git a/arch/arm/mach-imx/include/mach/iomux-v3.h b/arch/arm/mach-imx/include/mach/iomux-v3.h index b8cc9af..3bf457f 100644 --- a/arch/arm/mach-imx/include/mach/iomux-v3.h +++ b/arch/arm/mach-imx/include/mach/iomux-v3.h @@ -16,6 +16,8 @@ #ifndef __MACH_IOMUX_V3_H__ #define __MACH_IOMUX_V3_H__ +#include + /* * build IOMUX_PAD structure * @@ -104,6 +106,32 @@ typedef u64 iomux_v3_cfg_t; #define IOMUX_CONFIG_SION (0x1 << 4) +#define SHARE_MUX_CONF_REG 0x1 +#define ZERO_OFFSET_VALID 0x2 + +static inline void iomux_v3_setup_pad(void __iomem *iomux, unsigned int flags, + u32 mux_reg, u32 conf_reg, u32 input_reg, + u32 mux_val, u32 conf_val, u32 input_val) +{ + const bool mux_ok = !!mux_reg || (flags & ZERO_OFFSET_VALID); + const bool conf_ok = !!conf_reg; + const bool input_ok = !!input_reg; + + if (flags & SHARE_MUX_CONF_REG) { + mux_val |= conf_val; + } else { + if (conf_ok) + writel(conf_val, iomux + conf_reg); + } + + if (mux_ok) + writel(mux_val, iomux + mux_reg); + + if (input_ok) + writel(input_val, iomux + input_reg); +} + + /* * setups a single pad in the iomuxer */ -- 2.5.5 _______________________________________________ barebox mailing list barebox@lists.infradead.org http://lists.infradead.org/mailman/listinfo/barebox