From 225dfda1d676b70acf1e696ace68c23297926ce0 Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 25 Jan 2008 00:42:48 -0800 Subject: [PATCH] ARM: OMAP: Split omap_cfg_reg() into omap processor specific functions Use omap processor specific function depending on system type. Based on an earlier patch by Klaus Pedersen . Signed-off-by: Tony Lindgren --- arch/arm/mach-omap1/mux.c | 103 +++++++++++++++++++++++++++ arch/arm/mach-omap2/mux.c | 31 +++++++++ arch/arm/plat-omap/mux.c | 142 ++------------------------------------ 3 files changed, 139 insertions(+), 137 deletions(-) diff --git a/arch/arm/mach-omap1/mux.c b/arch/arm/mach-omap1/mux.c index d74f6798d081..cf3bdc00cfdb 100644 --- a/arch/arm/mach-omap1/mux.c +++ b/arch/arm/mach-omap1/mux.c @@ -314,7 +314,110 @@ MUX_CFG("Y14_1610_CCP_DATAM", 9, 21, 6, 2, 3, 1, 2, 0, 0) int __init_or_module omap1_cfg_reg(const struct pin_config *cfg) { + static DEFINE_SPINLOCK(mux_spin_lock); + unsigned long flags; + unsigned int reg_orig = 0, reg = 0, pu_pd_orig = 0, pu_pd = 0, + pull_orig = 0, pull = 0; + unsigned int mask, warn = 0; + + /* Check the mux register in question */ + if (cfg->mux_reg) { + unsigned tmp1, tmp2; + + spin_lock_irqsave(&mux_spin_lock, flags); + reg_orig = omap_readl(cfg->mux_reg); + + /* The mux registers always seem to be 3 bits long */ + mask = (0x7 << cfg->mask_offset); + tmp1 = reg_orig & mask; + reg = reg_orig & ~mask; + + tmp2 = (cfg->mask << cfg->mask_offset); + reg |= tmp2; + + if (tmp1 != tmp2) + warn = 1; + + omap_writel(reg, cfg->mux_reg); + spin_unlock_irqrestore(&mux_spin_lock, flags); + } + + /* Check for pull up or pull down selection on 1610 */ + if (!cpu_is_omap15xx()) { + if (cfg->pu_pd_reg && cfg->pull_val) { + spin_lock_irqsave(&mux_spin_lock, flags); + pu_pd_orig = omap_readl(cfg->pu_pd_reg); + mask = 1 << cfg->pull_bit; + + if (cfg->pu_pd_val) { + if (!(pu_pd_orig & mask)) + warn = 1; + /* Use pull up */ + pu_pd = pu_pd_orig | mask; + } else { + if (pu_pd_orig & mask) + warn = 1; + /* Use pull down */ + pu_pd = pu_pd_orig & ~mask; + } + omap_writel(pu_pd, cfg->pu_pd_reg); + spin_unlock_irqrestore(&mux_spin_lock, flags); + } + } + + /* Check for an associated pull down register */ + if (cfg->pull_reg) { + spin_lock_irqsave(&mux_spin_lock, flags); + pull_orig = omap_readl(cfg->pull_reg); + mask = 1 << cfg->pull_bit; + + if (cfg->pull_val) { + if (pull_orig & mask) + warn = 1; + /* Low bit = pull enabled */ + pull = pull_orig & ~mask; + } else { + if (!(pull_orig & mask)) + warn = 1; + /* High bit = pull disabled */ + pull = pull_orig | mask; + } + + omap_writel(pull, cfg->pull_reg); + spin_unlock_irqrestore(&mux_spin_lock, flags); + } + + if (warn) { +#ifdef CONFIG_OMAP_MUX_WARNINGS + printk(KERN_WARNING "MUX: initialized %s\n", cfg->name); +#endif + } + +#ifdef CONFIG_OMAP_MUX_DEBUG + if (cfg->debug || warn) { + printk("MUX: Setting register %s\n", cfg->name); + printk(" %s (0x%08x) = 0x%08x -> 0x%08x\n", + cfg->mux_reg_name, cfg->mux_reg, reg_orig, reg); + + if (!cpu_is_omap15xx()) { + if (cfg->pu_pd_reg && cfg->pull_val) { + printk(" %s (0x%08x) = 0x%08x -> 0x%08x\n", + cfg->pu_pd_name, cfg->pu_pd_reg, + pu_pd_orig, pu_pd); + } + } + + if (cfg->pull_reg) + printk(" %s (0x%08x) = 0x%08x -> 0x%08x\n", + cfg->pull_name, cfg->pull_reg, pull_orig, pull); + } +#endif + +#ifdef CONFIG_OMAP_MUX_ERRORS + return warn ? -ETXTBSY : 0; +#else return 0; +#endif } int __init omap1_mux_init(void) diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c index 351baab0503a..71cff46a8b71 100644 --- a/arch/arm/mach-omap2/mux.c +++ b/arch/arm/mach-omap2/mux.c @@ -172,8 +172,39 @@ MUX_CFG_24XX("B13_24XX_KBC6", 0x110, 3, 0, 0, 1) }; #ifdef CONFIG_ARCH_OMAP24XX + +#define OMAP24XX_L4_BASE 0x48000000 +#define OMAP24XX_PULL_ENA (1 << 3) +#define OMAP24XX_PULL_UP (1 << 4) + +/* REVISIT: Convert this code to use ctrl_{read,write}_reg */ int __init_or_module omap24xx_cfg_reg(const struct pin_config *cfg) { + u8 reg = 0; + unsigned int warn = 0; + + reg |= cfg->mask & 0x7; + if (cfg->pull_val) + reg |= OMAP24XX_PULL_ENA; + if(cfg->pu_pd_val) + reg |= OMAP24XX_PULL_UP; +#if defined(CONFIG_OMAP_MUX_DEBUG) || defined(CONFIG_OMAP_MUX_WARNINGS) + { + u8 orig = omap_readb(OMAP24XX_L4_BASE + cfg->mux_reg); + u8 debug = 0; + +#ifdef CONFIG_OMAP_MUX_DEBUG + debug = cfg->debug; +#endif + warn = (orig != reg); + if (debug || warn) + printk("MUX: setup %s (0x%08x): 0x%02x -> 0x%02x\n", + cfg->name, OMAP24XX_L4_BASE + cfg->mux_reg, + orig, reg); + } +#endif + omap_writeb(reg, OMAP24XX_L4_BASE + cfg->mux_reg); + return 0; } #endif diff --git a/arch/arm/plat-omap/mux.c b/arch/arm/plat-omap/mux.c index d881379111e1..4de18b9ffb16 100644 --- a/arch/arm/plat-omap/mux.c +++ b/arch/arm/plat-omap/mux.c @@ -32,10 +32,6 @@ #ifdef CONFIG_OMAP_MUX -#define OMAP24XX_L4_BASE 0x48000000 -#define OMAP24XX_PULL_ENA (1 << 3) -#define OMAP24XX_PULL_UP (1 << 4) - static struct omap_mux_cfg *mux_cfg; int __init omap_mux_register(struct omap_mux_cfg *arch_mux_cfg) @@ -56,13 +52,7 @@ int __init omap_mux_register(struct omap_mux_cfg *arch_mux_cfg) */ int __init_or_module omap_cfg_reg(const unsigned long index) { - static DEFINE_SPINLOCK(mux_spin_lock); - - unsigned long flags; - 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; + struct pin_config *reg; if (mux_cfg == NULL) { printk(KERN_ERR "Pin mux table not initialized\n"); @@ -76,134 +66,12 @@ int __init_or_module omap_cfg_reg(const unsigned long index) return -ENODEV; } - cfg = (struct pin_config *)&mux_cfg->pins[index]; - if (cpu_is_omap24xx()) { - u8 reg = 0; + reg = (struct pin_config *)&mux_cfg->pins[index]; - reg |= cfg->mask & 0x7; - if (cfg->pull_val) - reg |= OMAP24XX_PULL_ENA; - if(cfg->pu_pd_val) - reg |= OMAP24XX_PULL_UP; -#if defined(CONFIG_OMAP_MUX_DEBUG) || defined(CONFIG_OMAP_MUX_WARNINGS) - { - u8 orig = omap_readb(OMAP24XX_L4_BASE + cfg->mux_reg); - u8 debug = 0; + if (!mux_cfg->cfg_reg) + return -ENODEV; -#ifdef CONFIG_OMAP_MUX_DEBUG - debug = cfg->debug; -#endif - warn = (orig != reg); - if (debug || warn) - printk("MUX: setup %s (0x%08x): 0x%02x -> 0x%02x\n", - cfg->name, - OMAP24XX_L4_BASE + cfg->mux_reg, - orig, reg); - } -#endif - omap_writeb(reg, OMAP24XX_L4_BASE + cfg->mux_reg); - - return 0; - } - - /* Check the mux register in question */ - if (cfg->mux_reg) { - unsigned tmp1, tmp2; - - spin_lock_irqsave(&mux_spin_lock, flags); - reg_orig = omap_readl(cfg->mux_reg); - - /* The mux registers always seem to be 3 bits long */ - mask = (0x7 << cfg->mask_offset); - tmp1 = reg_orig & mask; - reg = reg_orig & ~mask; - - tmp2 = (cfg->mask << cfg->mask_offset); - reg |= tmp2; - - if (tmp1 != tmp2) - warn = 1; - - omap_writel(reg, cfg->mux_reg); - spin_unlock_irqrestore(&mux_spin_lock, flags); - } - - /* Check for pull up or pull down selection on 1610 */ - if (!cpu_is_omap15xx()) { - if (cfg->pu_pd_reg && cfg->pull_val) { - spin_lock_irqsave(&mux_spin_lock, flags); - pu_pd_orig = omap_readl(cfg->pu_pd_reg); - mask = 1 << cfg->pull_bit; - - if (cfg->pu_pd_val) { - if (!(pu_pd_orig & mask)) - warn = 1; - /* Use pull up */ - pu_pd = pu_pd_orig | mask; - } else { - if (pu_pd_orig & mask) - warn = 1; - /* Use pull down */ - pu_pd = pu_pd_orig & ~mask; - } - omap_writel(pu_pd, cfg->pu_pd_reg); - spin_unlock_irqrestore(&mux_spin_lock, flags); - } - } - - /* Check for an associated pull down register */ - if (cfg->pull_reg) { - spin_lock_irqsave(&mux_spin_lock, flags); - pull_orig = omap_readl(cfg->pull_reg); - mask = 1 << cfg->pull_bit; - - if (cfg->pull_val) { - if (pull_orig & mask) - warn = 1; - /* Low bit = pull enabled */ - pull = pull_orig & ~mask; - } else { - if (!(pull_orig & mask)) - warn = 1; - /* High bit = pull disabled */ - pull = pull_orig | mask; - } - - omap_writel(pull, cfg->pull_reg); - spin_unlock_irqrestore(&mux_spin_lock, flags); - } - - if (warn) { -#ifdef CONFIG_OMAP_MUX_WARNINGS - printk(KERN_WARNING "MUX: initialized %s\n", cfg->name); -#endif - } - -#ifdef CONFIG_OMAP_MUX_DEBUG - if (cfg->debug || warn) { - printk("MUX: Setting register %s\n", cfg->name); - printk(" %s (0x%08x) = 0x%08x -> 0x%08x\n", - cfg->mux_reg_name, cfg->mux_reg, reg_orig, reg); - - if (!cpu_is_omap15xx()) { - if (cfg->pu_pd_reg && cfg->pull_val) { - printk(" %s (0x%08x) = 0x%08x -> 0x%08x\n", - cfg->pu_pd_name, cfg->pu_pd_reg, - pu_pd_orig, pu_pd); - } - } - - if (cfg->pull_reg) - printk(" %s (0x%08x) = 0x%08x -> 0x%08x\n", - cfg->pull_name, cfg->pull_reg, pull_orig, pull); - } -#endif - -#ifdef CONFIG_OMAP_MUX_ERRORS - return warn ? -ETXTBSY : 0; -#else - return 0; -#endif + return mux_cfg->cfg_reg(reg); } EXPORT_SYMBOL(omap_cfg_reg); #else