linux-kernel - Re: [PATCH v2 03/11] mfd: syscon: Add atmel-smc registers definition

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Date:	Mon, 10 Nov 2014 09:57:28 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc:	Samuel Ortiz <sameo@...ux.intel.com>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Andrew Victor <linux@...im.org.za>,
	Jean-Jacques Hiblot <jjhiblot@...phandler.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 03/11] mfd: syscon: Add atmel-smc registers definition

On Wed, 05 Nov 2014, Boris Brezillon wrote:

> Atmel AT91 SoCs have a memory range reserved for SMC (Static Memory
> Controller) configuration.
> Expose those registers so that drivers can make use of the smc syscon
> declared in at91 DTs.
> 
> Signed-off-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
> ---
>  include/linux/mfd/syscon/atmel-smc.h | 60 ++++++++++++++++++++++++++++++++++++
>  1 file changed, 60 insertions(+)
>  create mode 100644 include/linux/mfd/syscon/atmel-smc.h

Acked-by: Lee Jones <lee.jones@...aro.org>

Any idea who will take this set?

> diff --git a/include/linux/mfd/syscon/atmel-smc.h b/include/linux/mfd/syscon/atmel-smc.h
> new file mode 100644
> index 0000000..430f486
> --- /dev/null
> +++ b/include/linux/mfd/syscon/atmel-smc.h
> @@ -0,0 +1,60 @@
> +/*
> + * Atmel SMC (Static Memory Controller) register offsets and bit definitions.
> + *
> + * Copyright (C) 2014 Atmel
> + * Copyright (C) 2014 Free Electrons
> + *
> + * Author: Boris Brezillon <boris.brezillon@...e-electrons.com>
> + *
> + * This program is free software; you can redistribute it and/or modify
> + * it under the terms of the GNU General Public License version 2 as
> + * published by the Free Software Foundation.
> + */
> +
> +#ifndef _LINUX_MFD_SYSCON_ATMEL_SMC_H_
> +#define _LINUX_MFD_SYSCON_ATMEL_SMC_H_
> +
> +#include <linux/regmap.h>
> +
> +#define AT91SAM9_SMC_GENERIC_OFFSET	0x00
> +#define AT91SAM9_SMC_GENERIC_BLK_SZ	0x10
> +
> +#define SAMA5_SMC_GENERIC_OFFSET	0x600
> +#define SAMA5_SMC_GENERIC_BLK_SZ	0x14
> +
> +#define AT91SAM9_SMC_SETUP(o)		((o) + 0x00)
> +#define AT91SAM9_SMC_NWESETUP_SHFT	0
> +#define AT91SAM9_SMC_NCS_WRSETUP_SHFT	8
> +#define AT91SAM9_SMC_NRDSETUP_SHFT	16
> +#define AT91SAM9_SMC_NCS_NRDSETUP_SHFT	24
> +
> +#define AT91SAM9_SMC_PULSE(o)		((o) + 0x04)
> +
> +#define AT91SAM9_SMC_CYCLE(o)		((o) + 0x08)
> +
> +#define AT91SAM9_SMC_MODE(o)		((o) + 0x0c)
> +#define SAMA5_SMC_MODE(o)		((o) + 0x10)
> +#define AT91_SMC_READMODE		BIT(0)
> +#define AT91_SMC_WRITEMODE		BIT(1)
> +#define AT91_SMC_EXNWMODE		GENMASK(5, 4)
> +#define AT91_SMC_EXNWMODE_DISABLE	(0 << 4)
> +#define AT91_SMC_EXNWMODE_FROZEN	(2 << 4)
> +#define AT91_SMC_EXNWMODE_READY		(3 << 4)
> +#define AT91_SMC_BAT			BIT(8)
> +#define AT91_SMC_BAT_SELECT		(0 << 8)
> +#define AT91_SMC_BAT_WRITE		(1 << 8)
> +#define AT91_SMC_DBW			GENMASK(13, 12)
> +#define AT91_SMC_DBW_8			(0 << 12)
> +#define AT91_SMC_DBW_16			(1 << 12)
> +#define AT91_SMC_DBW_32			(2 << 12)
> +#define AT91_SMC_TDF			GENMASK(19, 16)
> +#define AT91_SMC_TDF_(x)		(((x) & 0xf) << 16)
> +#define AT91_SMC_TDFMODE		BIT(20)
> +#define AT91_SMC_PMEN			BIT(24)
> +#define AT91_SMC_PS			GENMASK(29, 28)
> +#define AT91_SMC_PS_4			(0 << 28)
> +#define AT91_SMC_PS_8			(1 << 28)
> +#define AT91_SMC_PS_16			(2 << 28)
> +#define AT91_SMC_PS_32			(3 << 28)
> +
> +#endif /* _LINUX_MFD_SYSCON_ATMEL_SMC_H_ */

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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