From 7d7f665d5dac8d19f2fcb56baea09c59a3f861be Mon Sep 17 00:00:00 2001 From: Tony Lindgren Date: Fri, 25 Jan 2008 00:42:48 -0800 Subject: [PATCH] ARM: OMAP: Allow registering pin mux function This patch changes pin multiplexing init to allow registering custom function. The omap_cfg_reg() func will be split into omap processor specific functions in later patch. This is done to make adding omap3 pin multiplexing easier. Signed-off-by: Tony Lindgren --- arch/arm/mach-omap1/mux.c | 21 ++++++++++++++++++--- arch/arm/mach-omap2/mux.c | 21 +++++++++++++++++++-- arch/arm/plat-omap/mux.c | 30 ++++++++++++++++-------------- include/asm-arm/arch-omap/mux.h | 8 +++++++- 4 files changed, 60 insertions(+), 20 deletions(-) diff --git a/arch/arm/mach-omap1/mux.c b/arch/arm/mach-omap1/mux.c index 52c70e5fcf..d74f6798d0 100644 --- a/arch/arm/mach-omap1/mux.c +++ b/arch/arm/mach-omap1/mux.c @@ -32,6 +32,8 @@ #ifdef CONFIG_OMAP_MUX +static struct omap_mux_cfg arch_mux_cfg; + #ifdef CONFIG_ARCH_OMAP730 struct pin_config __initdata_or_module omap730_pins[] = { MUX_CFG_730("E2_730_KBR0", 12, 21, 0, 20, 1, 0) @@ -310,18 +312,31 @@ MUX_CFG("Y14_1610_CCP_DATAM", 9, 21, 6, 2, 3, 1, 2, 0, 0) }; #endif /* CONFIG_ARCH_OMAP15XX || CONFIG_ARCH_OMAP16XX */ +int __init_or_module omap1_cfg_reg(const struct pin_config *cfg) +{ + return 0; +} + int __init omap1_mux_init(void) { #ifdef CONFIG_ARCH_OMAP730 - omap_mux_register(omap730_pins, ARRAY_SIZE(omap730_pins)); + if (cpu_is_omap730()) { + arch_mux_cfg.pins = omap730_pins; + arch_mux_cfg.size = ARRAY_SIZE(omap730_pins); + arch_mux_cfg.cfg_reg = omap1_cfg_reg; + } #endif #if defined(CONFIG_ARCH_OMAP15XX) || defined(CONFIG_ARCH_OMAP16XX) - omap_mux_register(omap1xxx_pins, ARRAY_SIZE(omap1xxx_pins)); + if (cpu_is_omap15xx() || cpu_is_omap16xx()) { + arch_mux_cfg.pins = omap1xxx_pins; + arch_mux_cfg.size = ARRAY_SIZE(omap1xxx_pins); + arch_mux_cfg.cfg_reg = omap1_cfg_reg; + } #endif - return 0; + return omap_mux_register(&arch_mux_cfg); } #endif diff --git a/arch/arm/mach-omap2/mux.c b/arch/arm/mach-omap2/mux.c index 05750975d7..351baab050 100644 --- a/arch/arm/mach-omap2/mux.c +++ b/arch/arm/mach-omap2/mux.c @@ -32,6 +32,8 @@ #ifdef CONFIG_OMAP_MUX +static struct omap_mux_cfg arch_mux_cfg; + /* NOTE: See mux.h for the enumeration */ struct pin_config __initdata_or_module omap24xx_pins[] = { @@ -169,10 +171,25 @@ MUX_CFG_24XX("B13_24XX_KBC6", 0x110, 3, 0, 0, 1) }; -int __init omap2_mux_init(void) +#ifdef CONFIG_ARCH_OMAP24XX +int __init_or_module omap24xx_cfg_reg(const struct pin_config *cfg) { - omap_mux_register(omap24xx_pins, ARRAY_SIZE(omap24xx_pins)); return 0; } +#endif + +int __init omap2_mux_init(void) +{ + +#ifdef CONFIG_ARCH_OMAP24XX + if (cpu_is_omap24xx()) { + arch_mux_cfg.pins = omap24xx_pins; + arch_mux_cfg.size = ARRAY_SIZE(omap24xx_pins); + arch_mux_cfg.cfg_reg = omap24xx_cfg_reg; + } +#endif + + return omap_mux_register(&arch_mux_cfg); +} #endif diff --git a/arch/arm/plat-omap/mux.c b/arch/arm/plat-omap/mux.c index 75211f20cc..d881379111 100644 --- a/arch/arm/plat-omap/mux.c +++ b/arch/arm/plat-omap/mux.c @@ -36,17 +36,17 @@ #define OMAP24XX_PULL_ENA (1 << 3) #define OMAP24XX_PULL_UP (1 << 4) -static struct pin_config * pin_table; -static unsigned long pin_table_sz; +static struct omap_mux_cfg *mux_cfg; -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) +int __init omap_mux_register(struct omap_mux_cfg *arch_mux_cfg) { - pin_table = pins; - pin_table_sz = size; + 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; } @@ -64,17 +64,19 @@ int __init_or_module omap_cfg_reg(const unsigned long index) pull_orig = 0, pull = 0; unsigned int mask, warn = 0; - if (!pin_table) - BUG(); + if (mux_cfg == NULL) { + printk(KERN_ERR "Pin mux table not initialized\n"); + return -ENODEV; + } - if (index >= pin_table_sz) { + if (index >= mux_cfg->size) { printk(KERN_ERR "Invalid pin mux index: %lu (%lu)\n", - index, pin_table_sz); + index, mux_cfg->size); dump_stack(); return -ENODEV; } - cfg = (struct pin_config *)&pin_table[index]; + cfg = (struct pin_config *)&mux_cfg->pins[index]; if (cpu_is_omap24xx()) { u8 reg = 0; diff --git a/include/asm-arm/arch-omap/mux.h b/include/asm-arm/arch-omap/mux.h index b8fff50e6a..0edc6ce91b 100644 --- a/include/asm-arm/arch-omap/mux.h +++ b/include/asm-arm/arch-omap/mux.h @@ -559,11 +559,17 @@ enum omap24xx_index { B13_24XX_KBC6, }; +struct omap_mux_cfg { + struct pin_config *pins; + unsigned long size; + int (*cfg_reg)(const struct pin_config *cfg); +}; + #ifdef CONFIG_OMAP_MUX /* setup pin muxing in Linux */ extern int omap1_mux_init(void); extern int omap2_mux_init(void); -extern int omap_mux_register(struct pin_config * pins, unsigned long size); +extern int omap_mux_register(struct omap_mux_cfg *); extern int omap_cfg_reg(unsigned long reg_cfg); #else /* boot loader does it all (no warnings from CONFIG_OMAP_MUX_WARNINGS) */ -- 2.39.5