* Adrian Hunter <adrian.hunter@xxxxxxxxx> [100116 17:31]:
> From 33beb5bc36cba739971dc8919a6929925ad3dafc Mon Sep 17 00:00:00 2001
> From: Tony Lindgren <tony@xxxxxxxxxxx>
> Date: Wed, 13 Jan 2010 10:27:17 -0800
> Subject: [PATCH] omap: Add functions for dynamic remuxing of pins
>
> Make the omap_mux_read and write available for board code,
> and rename omap_mux_set_board_signals into omap_mux_write_array.
>
> In some cases we want to change the signals dynamically,
> mostly for power management.
>
> Note that we cannot use the signal names as they are set
> __init to save memory.
I'll try to merge this as a fix since it fixes dynamic remuxing.
Adrian, can I add your Acked-by?
Regards,
Tony
> Signed-off-by: Tony Lindgren <tony@xxxxxxxxxxx>
> ---
> arch/arm/mach-omap2/mux.c | 22 +++++++++++-----------
> arch/arm/mach-omap2/mux.h | 24 ++++++++++++++++++++++++
> 2 files changed, 35 insertions(+), 11 deletions(-)
>
> diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c
> index a8febd3..50298b4 100644
> --- a/arch/arm/mach-omap2/mux.c
> +++ b/arch/arm/mach-omap2/mux.c
> @@ -51,7 +51,7 @@ struct omap_mux_entry {
> static unsigned long mux_phys;
> static void __iomem *mux_base;
>
> -static inline u16 omap_mux_read(u16 reg)
> +u16 omap_mux_read(u16 reg)
> {
> if (cpu_is_omap24xx())
> return __raw_readb(mux_base + reg);
> @@ -59,7 +59,7 @@ static inline u16 omap_mux_read(u16 reg)
> return __raw_readw(mux_base + reg);
> }
>
> -static inline void omap_mux_write(u16 val, u16 reg)
> +void omap_mux_write(u16 val, u16 reg)
> {
> if (cpu_is_omap24xx())
> __raw_writeb(val, mux_base + reg);
> @@ -67,6 +67,14 @@ static inline void omap_mux_write(u16 val, u16 reg)
> __raw_writew(val, mux_base + reg);
> }
>
> +void omap_mux_write_array(struct omap_board_mux *board_mux)
> +{
> + while (board_mux->reg_offset != OMAP_MUX_TERMINATOR) {
> + omap_mux_write(board_mux->value, board_mux->reg_offset);
> + board_mux++;
> + }
> +}
> +
> #if defined(CONFIG_ARCH_OMAP24XX) && defined(CONFIG_OMAP_MUX)
>
> static struct omap_mux_cfg arch_mux_cfg;
> @@ -833,14 +841,6 @@ static void __init omap_mux_set_cmdline_signals(void)
> kfree(options);
> }
>
> -static void __init omap_mux_set_board_signals(struct omap_board_mux *board_mux)
> -{
> - while (board_mux->reg_offset != OMAP_MUX_TERMINATOR) {
> - omap_mux_write(board_mux->value, board_mux->reg_offset);
> - board_mux++;
> - }
> -}
> -
> static int __init omap_mux_copy_names(struct omap_mux *src,
> struct omap_mux *dst)
> {
> @@ -992,7 +992,7 @@ static void omap_mux_init_package(struct omap_mux *superset,
> static void omap_mux_init_signals(struct omap_board_mux *board_mux)
> {
> omap_mux_set_cmdline_signals();
> - omap_mux_set_board_signals(board_mux);
> + omap_mux_write_array(board_mux);
> }
>
> #else
> diff --git a/arch/arm/mach-omap2/mux.h b/arch/arm/mach-omap2/mux.h
> index d8b4d5a..f8c2e7a 100644
> --- a/arch/arm/mach-omap2/mux.h
> +++ b/arch/arm/mach-omap2/mux.h
> @@ -147,6 +147,30 @@ u16 omap_mux_get_gpio(int gpio);
> void omap_mux_set_gpio(u16 val, int gpio);
>
> /**
> + * omap_mux_read() - read mux register
> + * @mux_offset: Offset of the mux register
> + *
> + */
> +u16 omap_mux_read(u16 mux_offset);
> +
> +/**
> + * omap_mux_write() - write mux register
> + * @val: New mux register value
> + * @mux_offset: Offset of the mux register
> + *
> + * This should be only needed for dynamic remuxing of non-gpio signals.
> + */
> +void omap_mux_write(u16 val, u16 mux_offset);
> +
> +/**
> + * omap_mux_write_array() - write an array of mux registers
> + * @board_mux: Array of mux registers terminated by MAP_MUX_TERMINATOR
> + *
> + * This should be only needed for dynamic remuxing of non-gpio signals.
> + */
> +void omap_mux_write_array(struct omap_board_mux *board_mux);
> +
> +/**
> * omap3_mux_init() - initialize mux system with board specific set
> * @board_mux: Board specific mux table
> * @flags: OMAP package type used for the board
> --
> 1.6.0.4
>
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