[RFC 1/8] ARM: add very initial support for Canon DIGIC chips
Jason Cooper
jason at lakedaemon.net
Mon Aug 26 09:20:18 EDT 2013
Hi Antony,
On Mon, Aug 26, 2013 at 08:57:10AM +0400, Antony Pavlov wrote:
> TODO: the clocksource driver need improvement!
>
> Signed-off-by: Antony Pavlov <antonynpavlov at gmail.com>
> ---
> arch/arm/Kconfig | 9 ++++
> arch/arm/Makefile | 1 +
> arch/arm/dts/digic4.dtsi | 24 +++++++++++
> arch/arm/mach-digic/Kconfig | 11 +++++
> arch/arm/mach-digic/Makefile | 2 +
> arch/arm/mach-digic/core.c | 24 +++++++++++
> arch/arm/mach-digic/csrc-timer.c | 67 +++++++++++++++++++++++++++++
> arch/arm/mach-digic/include/mach/debug_ll.h | 40 +++++++++++++++++
> arch/arm/mach-digic/include/mach/digic4.h | 29 +++++++++++++
> arch/arm/mach-digic/include/mach/gpio.h | 1 +
> 10 files changed, 208 insertions(+)
> create mode 100644 arch/arm/dts/digic4.dtsi
> create mode 100644 arch/arm/mach-digic/Kconfig
> create mode 100644 arch/arm/mach-digic/Makefile
> create mode 100644 arch/arm/mach-digic/core.c
> create mode 100644 arch/arm/mach-digic/csrc-timer.c
> create mode 100644 arch/arm/mach-digic/include/mach/debug_ll.h
> create mode 100644 arch/arm/mach-digic/include/mach/digic4.h
> create mode 100644 arch/arm/mach-digic/include/mach/gpio.h
>
...
> diff --git a/arch/arm/mach-digic/include/mach/debug_ll.h b/arch/arm/mach-digic/include/mach/debug_ll.h
> new file mode 100644
> index 0000000..5f4579e
> --- /dev/null
> +++ b/arch/arm/mach-digic/include/mach/debug_ll.h
> @@ -0,0 +1,40 @@
> +/*
> + * Copyright (C) 2013 Antony Pavlov <antonynpavlov at gmail.com>
> + *
> + * This file is part of barebox.
> + * See file CREDITS for list of people who contributed to this project.
> + *
> + * 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.
> + *
> + * This program is distributed in the hope that it will be useful,
> + * but WITHOUT ANY WARRANTY; without even the implied warranty of
> + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
> + * GNU General Public License for more details.
> + *
> + */
> +
> +#ifndef __MACH_DEBUG_LL_H__
> +#define __MACH_DEBUG_LL_H__
> +
> +#include <io.h>
> +#include <mach/digic4.h>
> +
> +#define DEBUG_LL_UART DIGIC4_UART
> +
> +/* Serial interface registers */
> +#define DEBUG_LL_UART_TX (DEBUG_LL_UART + 0x0)
> +#define DEBUG_LL_UART_ST (DEBUG_LL_UART + 0x14)
> + #define UART_ST_TX_RDY 2
leading whitespace, and perhaps use BIT() here.
> +
> +static inline void PUTC_LL(char ch)
> +{
> + while (!(readl(DEBUG_LL_UART_ST) & UART_ST_TX_RDY))
> + ; /* noop */
> +
> + writel(0x06, DEBUG_LL_UART_ST);
could you use a macro here for 0x06?
> + writel(ch, DEBUG_LL_UART_TX);
> +}
> +
> +#endif
thx,
Jason.
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