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| author | Mike Rapoport <mike@compulab.co.il> | 2009-12-12 01:16:31 +0100 |
|---|---|---|
| committer | Tony Lindgren <tony@atomide.com> | 2009-12-12 01:16:31 +0100 |
| commit | 92c9f5018997dbc5f5e91eae2400d78ada2760b0 (patch) | |
| tree | ab98e9539cd6a554be1cec164ca9528b55cf1cc4 /arch/arm/mach-omap2/mux.c | |
| parent | Merge branch 'for_2_6_33' of git://git.pwsan.com/linux-2.6 into omap-for-linus (diff) | |
| download | linux-92c9f5018997dbc5f5e91eae2400d78ada2760b0.tar.xz linux-92c9f5018997dbc5f5e91eae2400d78ada2760b0.zip | |
omap2: mux: intoduce omap_mux_{read,write}
intoduce omap_mux_{read,write}
Signed-off-by: Mike Rapoport <mike@compulab.co.il>
Signed-off-by: Tony Lindgren <tony@atomide.com>
Diffstat (limited to 'arch/arm/mach-omap2/mux.c')
| -rw-r--r-- | arch/arm/mach-omap2/mux.c | 44 |
1 files changed, 38 insertions, 6 deletions
diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c index c18a94eca641..64250c504c64 100644 --- a/arch/arm/mach-omap2/mux.c +++ b/arch/arm/mach-omap2/mux.c @@ -35,7 +35,27 @@ #ifdef CONFIG_OMAP_MUX +#define OMAP_MUX_BASE_OFFSET 0x30 /* Offset from CTRL_BASE */ +#define OMAP_MUX_BASE_SZ 0x5ca + static struct omap_mux_cfg arch_mux_cfg; +static void __iomem *mux_base; + +static inline u16 omap_mux_read(u16 reg) +{ + if (cpu_is_omap24xx()) + return __raw_readb(mux_base + reg); + else + return __raw_readw(mux_base + reg); +} + +static inline void omap_mux_write(u16 val, u16 reg) +{ + if (cpu_is_omap24xx()) + __raw_writeb(val, mux_base + reg); + else + __raw_writew(val, mux_base + reg); +} /* NOTE: See mux.h for the enumeration */ @@ -581,10 +601,7 @@ static void __init_or_module omap2_cfg_debug(const struct pin_config *cfg, u16 r u16 orig; u8 warn = 0, debug = 0; - if (cpu_is_omap24xx()) - orig = omap_ctrl_readb(cfg->mux_reg); - else - orig = omap_ctrl_readw(cfg->mux_reg); + orig = omap_mux_read(cfg->mux_reg - OMAP_MUX_BASE_OFFSET); #ifdef CONFIG_OMAP_MUX_DEBUG debug = cfg->debug; @@ -614,7 +631,7 @@ static int __init_or_module omap24xx_cfg_reg(const struct pin_config *cfg) if (cfg->pu_pd_val) reg |= OMAP2_PULL_UP; omap2_cfg_debug(cfg, reg); - omap_ctrl_writeb(reg, cfg->mux_reg); + omap_mux_write(reg, cfg->mux_reg - OMAP_MUX_BASE_OFFSET); spin_unlock_irqrestore(&mux_spin_lock, flags); return 0; @@ -633,7 +650,7 @@ static int __init_or_module omap34xx_cfg_reg(const struct pin_config *cfg) spin_lock_irqsave(&mux_spin_lock, flags); reg |= cfg->mux_val; omap2_cfg_debug(cfg, reg); - omap_ctrl_writew(reg, cfg->mux_reg); + omap_mux_write(reg, cfg->mux_reg - OMAP_MUX_BASE_OFFSET); spin_unlock_irqrestore(&mux_spin_lock, flags); return 0; @@ -644,6 +661,21 @@ static int __init_or_module omap34xx_cfg_reg(const struct pin_config *cfg) int __init omap2_mux_init(void) { + u32 mux_pbase; + + if (cpu_is_omap2420()) + mux_pbase = OMAP2420_CTRL_BASE + OMAP_MUX_BASE_OFFSET; + else if (cpu_is_omap2430()) + mux_pbase = OMAP243X_CTRL_BASE + OMAP_MUX_BASE_OFFSET; + else if (cpu_is_omap34xx()) + mux_pbase = OMAP343X_CTRL_BASE + OMAP_MUX_BASE_OFFSET; + + mux_base = ioremap(mux_pbase, OMAP_MUX_BASE_SZ); + if (!mux_base) { + printk(KERN_ERR "mux: Could not ioremap\n"); + return -ENODEV; + } + if (cpu_is_omap24xx()) { arch_mux_cfg.pins = omap24xx_pins; arch_mux_cfg.size = OMAP24XX_PINS_SZ; |