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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>
hifive-unleashed-5.1
Mike Rapoport 2009-12-11 16:16:31 -08:00 committed by Tony Lindgren
parent 24ed45aa07
commit 92c9f50189
1 changed files with 38 additions and 6 deletions
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44
arch/arm/mach-omap2/mux.c
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@ -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;