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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>
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24ed45aa07
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@ -35,7 +35,27 @@
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#ifdef CONFIG_OMAP_MUX
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#define OMAP_MUX_BASE_OFFSET 0x30 /* Offset from CTRL_BASE */
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#define OMAP_MUX_BASE_SZ 0x5ca
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static struct omap_mux_cfg arch_mux_cfg;
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static void __iomem *mux_base;
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static inline u16 omap_mux_read(u16 reg)
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{
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if (cpu_is_omap24xx())
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return __raw_readb(mux_base + reg);
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else
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return __raw_readw(mux_base + reg);
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}
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static inline void omap_mux_write(u16 val, u16 reg)
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{
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if (cpu_is_omap24xx())
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__raw_writeb(val, mux_base + reg);
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else
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__raw_writew(val, mux_base + reg);
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}
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/* NOTE: See mux.h for the enumeration */
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@ -581,10 +601,7 @@ static void __init_or_module omap2_cfg_debug(const struct pin_config *cfg, u16 r
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u16 orig;
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u8 warn = 0, debug = 0;
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if (cpu_is_omap24xx())
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orig = omap_ctrl_readb(cfg->mux_reg);
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else
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orig = omap_ctrl_readw(cfg->mux_reg);
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orig = omap_mux_read(cfg->mux_reg - OMAP_MUX_BASE_OFFSET);
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#ifdef CONFIG_OMAP_MUX_DEBUG
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debug = cfg->debug;
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@ -614,7 +631,7 @@ static int __init_or_module omap24xx_cfg_reg(const struct pin_config *cfg)
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if (cfg->pu_pd_val)
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reg |= OMAP2_PULL_UP;
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omap2_cfg_debug(cfg, reg);
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omap_ctrl_writeb(reg, cfg->mux_reg);
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omap_mux_write(reg, cfg->mux_reg - OMAP_MUX_BASE_OFFSET);
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spin_unlock_irqrestore(&mux_spin_lock, flags);
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return 0;
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@ -633,7 +650,7 @@ static int __init_or_module omap34xx_cfg_reg(const struct pin_config *cfg)
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spin_lock_irqsave(&mux_spin_lock, flags);
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reg |= cfg->mux_val;
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omap2_cfg_debug(cfg, reg);
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omap_ctrl_writew(reg, cfg->mux_reg);
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omap_mux_write(reg, cfg->mux_reg - OMAP_MUX_BASE_OFFSET);
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spin_unlock_irqrestore(&mux_spin_lock, flags);
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return 0;
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@ -644,6 +661,21 @@ static int __init_or_module omap34xx_cfg_reg(const struct pin_config *cfg)
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int __init omap2_mux_init(void)
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{
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u32 mux_pbase;
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if (cpu_is_omap2420())
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mux_pbase = OMAP2420_CTRL_BASE + OMAP_MUX_BASE_OFFSET;
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else if (cpu_is_omap2430())
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mux_pbase = OMAP243X_CTRL_BASE + OMAP_MUX_BASE_OFFSET;
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else if (cpu_is_omap34xx())
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mux_pbase = OMAP343X_CTRL_BASE + OMAP_MUX_BASE_OFFSET;
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mux_base = ioremap(mux_pbase, OMAP_MUX_BASE_SZ);
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if (!mux_base) {
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printk(KERN_ERR "mux: Could not ioremap\n");
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return -ENODEV;
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}
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if (cpu_is_omap24xx()) {
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arch_mux_cfg.pins = omap24xx_pins;
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arch_mux_cfg.size = OMAP24XX_PINS_SZ;
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