diff options
Diffstat (limited to 'arch/arm/mach-omap1/mux.c')
| -rw-r--r-- | arch/arm/mach-omap1/mux.c | 76 |
1 files changed, 71 insertions, 5 deletions
diff --git a/arch/arm/mach-omap1/mux.c b/arch/arm/mach-omap1/mux.c index 07212cc621a..667ce5027f6 100644 --- a/arch/arm/mach-omap1/mux.c +++ b/arch/arm/mach-omap1/mux.c @@ -27,9 +27,9 @@ #include <linux/io.h> #include <linux/spinlock.h> -#include <asm/system.h> +#include <mach/hardware.h> -#include <plat/mux.h> +#include <mach/mux.h> #ifdef CONFIG_OMAP_MUX @@ -62,6 +62,18 @@ MUX_CFG_7XX("MMC_7XX_DAT0", 2, 17, 0, 16, 1, 0) /* I2C interface */ MUX_CFG_7XX("I2C_7XX_SCL", 5, 1, 0, 0, 1, 0) MUX_CFG_7XX("I2C_7XX_SDA", 5, 5, 0, 0, 1, 0) + +/* SPI pins */ +MUX_CFG_7XX("SPI_7XX_1", 6, 5, 4, 4, 1, 0) +MUX_CFG_7XX("SPI_7XX_2", 6, 9, 4, 8, 1, 0) +MUX_CFG_7XX("SPI_7XX_3", 6, 13, 4, 12, 1, 0) +MUX_CFG_7XX("SPI_7XX_4", 6, 17, 4, 16, 1, 0) +MUX_CFG_7XX("SPI_7XX_5", 8, 25, 0, 24, 0, 0) +MUX_CFG_7XX("SPI_7XX_6", 9, 5, 0, 4, 0, 0) + +/* UART pins */ +MUX_CFG_7XX("UART_7XX_1", 3, 21, 0, 20, 0, 0) +MUX_CFG_7XX("UART_7XX_2", 8, 1, 6, 0, 0, 0) }; #define OMAP7XX_PINS_SZ ARRAY_SIZE(omap7xx_pins) #else @@ -331,7 +343,7 @@ MUX_CFG("Y14_1610_CCP_DATAM", 9, 21, 6, 2, 3, 1, 2, 0, 0) #define OMAP1XXX_PINS_SZ 0 #endif /* CONFIG_ARCH_OMAP15XX || CONFIG_ARCH_OMAP16XX */ -int __init_or_module omap1_cfg_reg(const struct pin_config *cfg) +static int __init_or_module omap1_cfg_reg(const struct pin_config *cfg) { static DEFINE_SPINLOCK(mux_spin_lock); unsigned long flags; @@ -432,13 +444,63 @@ int __init_or_module omap1_cfg_reg(const struct pin_config *cfg) } #endif -#ifdef CONFIG_OMAP_MUX_ERRORS +#ifdef CONFIG_OMAP_MUX_WARNINGS return warn ? -ETXTBSY : 0; #else return 0; #endif } +static struct omap_mux_cfg *mux_cfg; + +int __init omap_mux_register(struct omap_mux_cfg *arch_mux_cfg) +{ + if (!arch_mux_cfg || !arch_mux_cfg->pins || arch_mux_cfg->size == 0 + || !arch_mux_cfg->cfg_reg) { + printk(KERN_ERR "Invalid pin table\n"); + return -EINVAL; + } + + mux_cfg = arch_mux_cfg; + + return 0; +} + +/* + * Sets the Omap MUX and PULL_DWN registers based on the table + */ +int __init_or_module omap_cfg_reg(const unsigned long index) +{ + struct pin_config *reg; + + if (!cpu_class_is_omap1()) { + printk(KERN_ERR "mux: Broken omap_cfg_reg(%lu) entry\n", + index); + WARN_ON(1); + return -EINVAL; + } + + if (mux_cfg == NULL) { + printk(KERN_ERR "Pin mux table not initialized\n"); + return -ENODEV; + } + + if (index >= mux_cfg->size) { + printk(KERN_ERR "Invalid pin mux index: %lu (%lu)\n", + index, mux_cfg->size); + dump_stack(); + return -ENODEV; + } + + reg = &mux_cfg->pins[index]; + + if (!mux_cfg->cfg_reg) + return -ENODEV; + + return mux_cfg->cfg_reg(reg); +} +EXPORT_SYMBOL(omap_cfg_reg); + int __init omap1_mux_init(void) { if (cpu_is_omap7xx()) { @@ -456,4 +518,8 @@ int __init omap1_mux_init(void) return omap_mux_register(&arch_mux_cfg); } -#endif +#else +#define omap_mux_init() do {} while(0) +#define omap_cfg_reg(x) do {} while(0) +#endif /* CONFIG_OMAP_MUX */ + |