diff options
Diffstat (limited to 'arch/blackfin/kernel/bfin_gpio.c')
-rw-r--r-- | arch/blackfin/kernel/bfin_gpio.c | 159 |
1 files changed, 17 insertions, 142 deletions
diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c index ed978f1c5cb9..a017359c1826 100644 --- a/arch/blackfin/kernel/bfin_gpio.c +++ b/arch/blackfin/kernel/bfin_gpio.c @@ -11,11 +11,8 @@ #include <linux/err.h> #include <linux/proc_fs.h> #include <linux/seq_file.h> -#include <asm/blackfin.h> -#include <asm/gpio.h> -#include <asm/portmux.h> +#include <linux/gpio.h> #include <linux/irq.h> -#include <asm/irq_handler.h> #if ANOMALY_05000311 || ANOMALY_05000323 enum { @@ -58,19 +55,6 @@ static struct gpio_port_t * const gpio_array[] = { (struct gpio_port_t *) FIO0_FLAG_D, (struct gpio_port_t *) FIO1_FLAG_D, (struct gpio_port_t *) FIO2_FLAG_D, -#elif defined(CONFIG_BF54x) || defined(CONFIG_BF60x) - (struct gpio_port_t *)PORTA_FER, - (struct gpio_port_t *)PORTB_FER, - (struct gpio_port_t *)PORTC_FER, - (struct gpio_port_t *)PORTD_FER, - (struct gpio_port_t *)PORTE_FER, - (struct gpio_port_t *)PORTF_FER, - (struct gpio_port_t *)PORTG_FER, -# if defined(CONFIG_BF54x) - (struct gpio_port_t *)PORTH_FER, - (struct gpio_port_t *)PORTI_FER, - (struct gpio_port_t *)PORTJ_FER, -# endif #else # error no gpio arrays defined #endif @@ -169,12 +153,6 @@ DECLARE_RESERVED_MAP(gpio_irq, GPIO_BANK_NUM); inline int check_gpio(unsigned gpio) { -#if defined(CONFIG_BF54x) - if (gpio == GPIO_PB15 || gpio == GPIO_PC14 || gpio == GPIO_PC15 - || gpio == GPIO_PH14 || gpio == GPIO_PH15 - || gpio == GPIO_PJ14 || gpio == GPIO_PJ15) - return -EINVAL; -#endif if (gpio >= MAX_BLACKFIN_GPIOS) return -EINVAL; return 0; @@ -212,12 +190,6 @@ static void port_setup(unsigned gpio, unsigned short usage) else *port_fer[gpio_bank(gpio)] |= gpio_bit(gpio); SSYNC(); -#elif defined(CONFIG_BF54x) || defined(CONFIG_BF60x) - if (usage == GPIO_USAGE) - gpio_array[gpio_bank(gpio)]->port_fer &= ~gpio_bit(gpio); - else - gpio_array[gpio_bank(gpio)]->port_fer |= gpio_bit(gpio); - SSYNC(); #endif } @@ -255,7 +227,7 @@ static int portmux_group_check(unsigned short per) u16 ident = P_IDENT(per); u16 function = P_FUNCT2MUX(per); s8 offset = port_mux[ident]; - u16 m, pmux, pfunc; + u16 m, pmux, pfunc, mask; if (offset < 0) return 0; @@ -270,10 +242,12 @@ static int portmux_group_check(unsigned short per) continue; if (offset == 1) - pfunc = (pmux >> offset) & 3; + mask = 3; else - pfunc = (pmux >> offset) & 1; - if (pfunc != function) { + mask = 1; + + pfunc = (pmux >> offset) & mask; + if (pfunc != (function & mask)) { pr_err("pin group conflict! request pin %d func %d conflict with pin %d func %d\n", ident, function, m, pfunc); return -EINVAL; @@ -288,43 +262,21 @@ static void portmux_setup(unsigned short per) u16 ident = P_IDENT(per); u16 function = P_FUNCT2MUX(per); s8 offset = port_mux[ident]; - u16 pmux; + u16 pmux, mask; if (offset == -1) return; pmux = bfin_read_PORT_MUX(); - if (offset != 1) - pmux &= ~(1 << offset); + if (offset == 1) + mask = 3; else - pmux &= ~(3 << 1); - pmux |= (function << offset); - bfin_write_PORT_MUX(pmux); -} -#elif defined(CONFIG_BF54x) || defined(CONFIG_BF60x) -inline void portmux_setup(unsigned short per) -{ - u16 ident = P_IDENT(per); - u16 function = P_FUNCT2MUX(per); - u32 pmux; + mask = 1; - pmux = gpio_array[gpio_bank(ident)]->port_mux; + pmux &= ~(mask << offset); + pmux |= ((function & mask) << offset); - pmux &= ~(0x3 << (2 * gpio_sub_n(ident))); - pmux |= (function & 0x3) << (2 * gpio_sub_n(ident)); - - gpio_array[gpio_bank(ident)]->port_mux = pmux; -} - -inline u16 get_portmux(unsigned short per) -{ - u16 ident = P_IDENT(per); - u32 pmux = gpio_array[gpio_bank(ident)]->port_mux; - return (pmux >> (2 * gpio_sub_n(ident)) & 0x3); -} -static int portmux_group_check(unsigned short per) -{ - return 0; + bfin_write_PORT_MUX(pmux); } #elif defined(CONFIG_BF52x) || defined(CONFIG_BF51x) static int portmux_group_check(unsigned short per) @@ -379,7 +331,6 @@ static int portmux_group_check(unsigned short per) } #endif -#if !(defined(CONFIG_BF54x) || defined(CONFIG_BF60x)) /*********************************************************** * * FUNCTIONS: Blackfin General Purpose Ports Access Functions @@ -572,7 +523,7 @@ static const unsigned int sic_iwr_irqs[] = { ************************************************************* * MODIFICATION HISTORY : **************************************************************/ -int gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl) +int bfin_gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl) { unsigned long flags; @@ -591,7 +542,7 @@ int gpio_pm_wakeup_ctrl(unsigned gpio, unsigned ctrl) return 0; } -int bfin_pm_standby_ctrl(unsigned ctrl) +int bfin_gpio_pm_standby_ctrl(unsigned ctrl) { u16 bank, mask, i; @@ -682,53 +633,6 @@ void bfin_gpio_pm_hibernate_restore(void) #endif -#else /* CONFIG_BF54x || CONFIG_BF60x */ -#ifdef CONFIG_PM - -int bfin_pm_standby_ctrl(unsigned ctrl) -{ - return 0; -} - -void bfin_gpio_pm_hibernate_suspend(void) -{ - int i, bank; - - for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) { - bank = gpio_bank(i); - - gpio_bank_saved[bank].fer = gpio_array[bank]->port_fer; - gpio_bank_saved[bank].mux = gpio_array[bank]->port_mux; - gpio_bank_saved[bank].data = gpio_array[bank]->data; - gpio_bank_saved[bank].inen = gpio_array[bank]->inen; - gpio_bank_saved[bank].dir = gpio_array[bank]->dir_set; - } -} - -void bfin_gpio_pm_hibernate_restore(void) -{ - int i, bank; - - for (i = 0; i < MAX_BLACKFIN_GPIOS; i += GPIO_BANKSIZE) { - bank = gpio_bank(i); - - gpio_array[bank]->port_mux = gpio_bank_saved[bank].mux; - gpio_array[bank]->port_fer = gpio_bank_saved[bank].fer; - gpio_array[bank]->inen = gpio_bank_saved[bank].inen; - gpio_array[bank]->data_set = gpio_bank_saved[bank].data - & gpio_bank_saved[bank].dir; - gpio_array[bank]->dir_set = gpio_bank_saved[bank].dir; - } -} -#endif - -unsigned short get_gpio_dir(unsigned gpio) -{ - return (0x01 & (gpio_array[gpio_bank(gpio)]->dir_clear >> gpio_sub_n(gpio))); -} -EXPORT_SYMBOL(get_gpio_dir); - -#endif /* CONFIG_BF54x || CONFIG_BF60x */ /*********************************************************** * @@ -785,11 +689,7 @@ int peripheral_request(unsigned short per, const char *label) * be requested and used by several drivers */ -#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x) - if (!((per & P_MAYSHARE) && get_portmux(per) == P_FUNCT2MUX(per))) { -#else if (!(per & P_MAYSHARE)) { -#endif /* * Allow that the identical pin function can * be requested from the same driver twice @@ -938,12 +838,9 @@ int bfin_gpio_request(unsigned gpio, const char *label) if (unlikely(is_reserved(gpio_irq, gpio, 1))) { printk(KERN_NOTICE "bfin-gpio: GPIO %d is already reserved as gpio-irq!" " (Documentation/blackfin/bfin-gpio-notes.txt)\n", gpio); - } -#if !(defined(CONFIG_BF54x) || defined(CONFIG_BF60x)) - else { /* Reset POLAR setting when acquiring a gpio for the first time */ + } else { /* Reset POLAR setting when acquiring a gpio for the first time */ set_gpio_polar(gpio, 0); } -#endif reserve(gpio, gpio); set_label(gpio, label); @@ -1112,11 +1009,7 @@ void bfin_gpio_irq_free(unsigned gpio) static inline void __bfin_gpio_direction_input(unsigned gpio) { -#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x) - gpio_array[gpio_bank(gpio)]->dir_clear = gpio_bit(gpio); -#else gpio_array[gpio_bank(gpio)]->dir &= ~gpio_bit(gpio); -#endif gpio_array[gpio_bank(gpio)]->inen |= gpio_bit(gpio); } @@ -1140,17 +1033,7 @@ EXPORT_SYMBOL(bfin_gpio_direction_input); void bfin_gpio_irq_prepare(unsigned gpio) { -#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x) - unsigned long flags; -#endif - port_setup(gpio, GPIO_USAGE); - -#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x) - flags = hard_local_irq_save(); - __bfin_gpio_direction_input(gpio); - hard_local_irq_restore(flags); -#endif } void bfin_gpio_set_value(unsigned gpio, int arg) @@ -1175,11 +1058,7 @@ int bfin_gpio_direction_output(unsigned gpio, int value) gpio_array[gpio_bank(gpio)]->inen &= ~gpio_bit(gpio); gpio_set_value(gpio, value); -#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x) - gpio_array[gpio_bank(gpio)]->dir_set = gpio_bit(gpio); -#else gpio_array[gpio_bank(gpio)]->dir |= gpio_bit(gpio); -#endif AWA_DUMMY_READ(dir); hard_local_irq_restore(flags); @@ -1190,9 +1069,6 @@ EXPORT_SYMBOL(bfin_gpio_direction_output); int bfin_gpio_get_value(unsigned gpio) { -#if defined(CONFIG_BF54x) || defined(CONFIG_BF60x) - return (1 & (gpio_array[gpio_bank(gpio)]->data >> gpio_sub_n(gpio))); -#else unsigned long flags; if (unlikely(get_gpio_edge(gpio))) { @@ -1205,7 +1081,6 @@ int bfin_gpio_get_value(unsigned gpio) return ret; } else return get_gpio_data(gpio); -#endif } EXPORT_SYMBOL(bfin_gpio_get_value); |