diff options
Diffstat (limited to 'arch/arm/plat-omap/mux.c')
| -rw-r--r-- | arch/arm/plat-omap/mux.c | 65 |
1 files changed, 51 insertions, 14 deletions
diff --git a/arch/arm/plat-omap/mux.c b/arch/arm/plat-omap/mux.c index 64482040f89e..8c1c016aa689 100644 --- a/arch/arm/plat-omap/mux.c +++ b/arch/arm/plat-omap/mux.c @@ -3,7 +3,7 @@ * * Utility to set the Omap MUX and PULL_DWN registers from a table in mux.h * - * Copyright (C) 2003 Nokia Corporation + * Copyright (C) 2003 - 2005 Nokia Corporation * * Written by Tony Lindgren <tony.lindgren@nokia.com> * @@ -25,38 +25,74 @@ #include <linux/config.h> #include <linux/module.h> #include <linux/init.h> +#include <linux/kernel.h> #include <asm/system.h> #include <asm/io.h> #include <linux/spinlock.h> - -#define __MUX_C__ #include <asm/arch/mux.h> #ifdef CONFIG_OMAP_MUX +#define OMAP24XX_L4_BASE 0x48000000 +#define OMAP24XX_PULL_ENA (1 << 3) +#define OMAP24XX_PULL_UP (1 << 4) + +static struct pin_config * pin_table; +static unsigned long pin_table_sz; + +extern struct pin_config * omap730_pins; +extern struct pin_config * omap1xxx_pins; +extern struct pin_config * omap24xx_pins; + +int __init omap_mux_register(struct pin_config * pins, unsigned long size) +{ + pin_table = pins; + pin_table_sz = size; + + return 0; +} + /* * Sets the Omap MUX and PULL_DWN registers based on the table */ -int __init_or_module -omap_cfg_reg(const reg_cfg_t reg_cfg) +int __init_or_module omap_cfg_reg(const unsigned long index) { static DEFINE_SPINLOCK(mux_spin_lock); unsigned long flags; - reg_cfg_set *cfg; + struct pin_config *cfg; unsigned int reg_orig = 0, reg = 0, pu_pd_orig = 0, pu_pd = 0, pull_orig = 0, pull = 0; unsigned int mask, warn = 0; - if (cpu_is_omap7xx()) - return 0; + if (!pin_table) + BUG(); - if (reg_cfg > ARRAY_SIZE(reg_cfg_table)) { - printk(KERN_ERR "MUX: reg_cfg %d\n", reg_cfg); - return -EINVAL; + if (index >= pin_table_sz) { + printk(KERN_ERR "Invalid pin mux index: %lu (%lu)\n", + index, pin_table_sz); + dump_stack(); + return -ENODEV; } - cfg = (reg_cfg_set *)®_cfg_table[reg_cfg]; + cfg = (struct pin_config *)&pin_table[index]; + if (cpu_is_omap24xx()) { + u8 reg = 0; + + reg |= cfg->mask & 0x7; + if (cfg->pull_val) + reg |= OMAP24XX_PULL_ENA; + if(cfg->pu_pd_val) + reg |= OMAP24XX_PULL_UP; +#ifdef CONFIG_OMAP_MUX_DEBUG + printk("Muxing %s (0x%08x): 0x%02x -> 0x%02x\n", + cfg->name, OMAP24XX_L4_BASE + cfg->mux_reg, + omap_readb(OMAP24XX_L4_BASE + cfg->mux_reg), reg); +#endif + omap_writeb(reg, OMAP24XX_L4_BASE + cfg->mux_reg); + + return 0; + } /* Check the mux register in question */ if (cfg->mux_reg) { @@ -157,7 +193,8 @@ omap_cfg_reg(const reg_cfg_t reg_cfg) return 0; #endif } - EXPORT_SYMBOL(omap_cfg_reg); - +#else +#define omap_mux_init() do {} while(0) +#define omap_cfg_reg(x) do {} while(0) #endif /* CONFIG_OMAP_MUX */ |