diff options
Diffstat (limited to 'arch/blackfin')
| -rw-r--r-- | arch/blackfin/kernel/bfin_gpio.c | 177 |
1 files changed, 107 insertions, 70 deletions
diff --git a/arch/blackfin/kernel/bfin_gpio.c b/arch/blackfin/kernel/bfin_gpio.c index b58b0de3c907..3fe0cd49e8db 100644 --- a/arch/blackfin/kernel/bfin_gpio.c +++ b/arch/blackfin/kernel/bfin_gpio.c @@ -88,6 +88,36 @@ #include <asm/portmux.h> #include <linux/irq.h> +#if ANOMALY_05000311 || ANOMALY_05000323 +enum { + AWA_data = SYSCR, + AWA_data_clear = SYSCR, + AWA_data_set = SYSCR, + AWA_toggle = SYSCR, + AWA_maska = UART_SCR, + AWA_maska_clear = UART_SCR, + AWA_maska_set = UART_SCR, + AWA_maska_toggle = UART_SCR, + AWA_maskb = UART_GCTL, + AWA_maskb_clear = UART_GCTL, + AWA_maskb_set = UART_GCTL, + AWA_maskb_toggle = UART_GCTL, + AWA_dir = SPORT1_STAT, + AWA_polar = SPORT1_STAT, + AWA_edge = SPORT1_STAT, + AWA_both = SPORT1_STAT, +#if ANOMALY_05000311 + AWA_inen = TIMER_ENABLE, +#elif ANOMALY_05000323 + AWA_inen = DMA1_1_CONFIG, +#endif +}; + /* Anomaly Workaround */ +#define AWA_DUMMY_READ(name) bfin_read16(AWA_ ## name) +#else +#define AWA_DUMMY_READ(...) do { } while (0) +#endif + #ifdef BF533_FAMILY static struct gpio_port_t *gpio_bankb[gpio_bank(MAX_BLACKFIN_GPIOS)] = { (struct gpio_port_t *) FIO_FLAG_D, @@ -332,10 +362,13 @@ inline u16 get_portmux(unsigned short portno) static void default_gpio(unsigned short gpio) { unsigned short bank, bitmask; + unsigned long flags; bank = gpio_bank(gpio); bitmask = gpio_bit(gpio); + local_irq_save(flags); + gpio_bankb[bank]->maska_clear = bitmask; gpio_bankb[bank]->maskb_clear = bitmask; SSYNC(); @@ -344,6 +377,9 @@ static void default_gpio(unsigned short gpio) gpio_bankb[bank]->polar &= ~bitmask; gpio_bankb[bank]->both &= ~bitmask; gpio_bankb[bank]->edge &= ~bitmask; + AWA_DUMMY_READ(edge); + local_irq_restore(flags); + } #else # define default_gpio(...) do { } while (0) @@ -396,6 +432,7 @@ void set_gpio_ ## name(unsigned short gpio, unsigned short arg) \ gpio_bankb[gpio_bank(gpio)]->name |= gpio_bit(gpio); \ else \ gpio_bankb[gpio_bank(gpio)]->name &= ~gpio_bit(gpio); \ + AWA_DUMMY_READ(name); \ local_irq_restore(flags); \ } \ EXPORT_SYMBOL(set_gpio_ ## name); @@ -407,6 +444,22 @@ SET_GPIO(edge) SET_GPIO(both) +#if ANOMALY_05000311 || ANOMALY_05000323 +#define SET_GPIO_SC(name) \ +void set_gpio_ ## name(unsigned short gpio, unsigned short arg) \ +{ \ + unsigned long flags; \ + BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))); \ + local_irq_save(flags); \ + if (arg) \ + gpio_bankb[gpio_bank(gpio)]->name ## _set = gpio_bit(gpio); \ + else \ + gpio_bankb[gpio_bank(gpio)]->name ## _clear = gpio_bit(gpio); \ + AWA_DUMMY_READ(name); \ + local_irq_restore(flags); \ +} \ +EXPORT_SYMBOL(set_gpio_ ## name); +#else #define SET_GPIO_SC(name) \ void set_gpio_ ## name(unsigned short gpio, unsigned short arg) \ { \ @@ -417,37 +470,20 @@ void set_gpio_ ## name(unsigned short gpio, unsigned short arg) \ gpio_bankb[gpio_bank(gpio)]->name ## _clear = gpio_bit(gpio); \ } \ EXPORT_SYMBOL(set_gpio_ ## name); +#endif SET_GPIO_SC(maska) SET_GPIO_SC(maskb) - -#if ANOMALY_05000311 -void set_gpio_data(unsigned short gpio, unsigned short arg) -{ - unsigned long flags; - BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))); - local_irq_save(flags); - if (arg) - gpio_bankb[gpio_bank(gpio)]->data_set = gpio_bit(gpio); - else - gpio_bankb[gpio_bank(gpio)]->data_clear = gpio_bit(gpio); - bfin_read_CHIPID(); - local_irq_restore(flags); -} -EXPORT_SYMBOL(set_gpio_data); -#else SET_GPIO_SC(data) -#endif - -#if ANOMALY_05000311 +#if ANOMALY_05000311 || ANOMALY_05000323 void set_gpio_toggle(unsigned short gpio) { unsigned long flags; BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))); local_irq_save(flags); gpio_bankb[gpio_bank(gpio)]->toggle = gpio_bit(gpio); - bfin_read_CHIPID(); + AWA_DUMMY_READ(toggle); local_irq_restore(flags); } #else @@ -462,13 +498,27 @@ EXPORT_SYMBOL(set_gpio_toggle); /*Set current PORT date (16-bit word)*/ +#if ANOMALY_05000311 || ANOMALY_05000323 #define SET_GPIO_P(name) \ void set_gpiop_ ## name(unsigned short gpio, unsigned short arg) \ { \ + unsigned long flags; \ + local_irq_save(flags); \ gpio_bankb[gpio_bank(gpio)]->name = arg; \ + AWA_DUMMY_READ(name); \ + local_irq_restore(flags); \ } \ EXPORT_SYMBOL(set_gpiop_ ## name); +#else +#define SET_GPIO_P(name) \ +void set_gpiop_ ## name(unsigned short gpio, unsigned short arg) \ +{ \ + gpio_bankb[gpio_bank(gpio)]->name = arg; \ +} \ +EXPORT_SYMBOL(set_gpiop_ ## name); +#endif +SET_GPIO_P(data) SET_GPIO_P(dir) SET_GPIO_P(inen) SET_GPIO_P(polar) @@ -478,31 +528,30 @@ SET_GPIO_P(maska) SET_GPIO_P(maskb) -#if ANOMALY_05000311 -void set_gpiop_data(unsigned short gpio, unsigned short arg) -{ - unsigned long flags; - local_irq_save(flags); - gpio_bankb[gpio_bank(gpio)]->data = arg; - bfin_read_CHIPID(); - local_irq_restore(flags); -} -EXPORT_SYMBOL(set_gpiop_data); -#else -SET_GPIO_P(data) -#endif - - - /* Get a specific bit */ - +#if ANOMALY_05000311 || ANOMALY_05000323 +#define GET_GPIO(name) \ +unsigned short get_gpio_ ## name(unsigned short gpio) \ +{ \ + unsigned long flags; \ + unsigned short ret; \ + local_irq_save(flags); \ + ret = 0x01 & (gpio_bankb[gpio_bank(gpio)]->name >> gpio_sub_n(gpio)); \ + AWA_DUMMY_READ(name); \ + local_irq_restore(flags); \ + return ret; \ +} \ +EXPORT_SYMBOL(get_gpio_ ## name); +#else #define GET_GPIO(name) \ unsigned short get_gpio_ ## name(unsigned short gpio) \ { \ return (0x01 & (gpio_bankb[gpio_bank(gpio)]->name >> gpio_sub_n(gpio))); \ } \ EXPORT_SYMBOL(get_gpio_ ## name); +#endif +GET_GPIO(data) GET_GPIO(dir) GET_GPIO(inen) GET_GPIO(polar) @@ -511,33 +560,31 @@ GET_GPIO(both) GET_GPIO(maska) GET_GPIO(maskb) - -#if ANOMALY_05000311 -unsigned short get_gpio_data(unsigned short gpio) -{ - unsigned long flags; - unsigned short ret; - BUG_ON(!(reserved_gpio_map[gpio_bank(gpio)] & gpio_bit(gpio))); - local_irq_save(flags); - ret = 0x01 & (gpio_bankb[gpio_bank(gpio)]->data >> gpio_sub_n(gpio)); - bfin_read_CHIPID(); - local_irq_restore(flags); - return ret; -} -EXPORT_SYMBOL(get_gpio_data); -#else -GET_GPIO(data) -#endif - /*Get current PORT date (16-bit word)*/ +#if ANOMALY_05000311 || ANOMALY_05000323 +#define GET_GPIO_P(name) \ +unsigned short get_gpiop_ ## name(unsigned short gpio) \ +{ \ + unsigned long flags; \ + unsigned short ret; \ + local_irq_save(flags); \ + ret = (gpio_bankb[gpio_bank(gpio)]->name); \ + AWA_DUMMY_READ(name); \ + local_irq_restore(flags); \ + return ret; \ +} \ +EXPORT_SYMBOL(get_gpiop_ ## name); +#else #define GET_GPIO_P(name) \ unsigned short get_gpiop_ ## name(unsigned short gpio) \ { \ return (gpio_bankb[gpio_bank(gpio)]->name);\ } \ EXPORT_SYMBOL(get_gpiop_ ## name); +#endif +GET_GPIO_P(data) GET_GPIO_P(dir) GET_GPIO_P(inen) GET_GPIO_P(polar) @@ -546,21 +593,6 @@ GET_GPIO_P(both) GET_GPIO_P(maska) GET_GPIO_P(maskb) -#if ANOMALY_05000311 -unsigned short get_gpiop_data(unsigned short gpio) -{ - unsigned long flags; - unsigned short ret; - local_irq_save(flags); - ret = gpio_bankb[gpio_bank(gpio)]->data; - bfin_read_CHIPID(); - local_irq_restore(flags); - return ret; -} -EXPORT_SYMBOL(get_gpiop_data); -#else -GET_GPIO_P(data) -#endif #ifdef CONFIG_PM /*********************************************************** @@ -684,6 +716,8 @@ u32 gpio_pm_setup(void) } } + AWA_DUMMY_READ(maskb_set); + if (sic_iwr) return sic_iwr; else @@ -715,6 +749,7 @@ void gpio_pm_restore(void) gpio_bankb[bank]->maskb = gpio_bank_saved[bank].maskb; } + AWA_DUMMY_READ(maskb); } #endif @@ -1089,6 +1124,7 @@ void gpio_direction_input(unsigned short gpio) local_irq_save(flags); gpio_bankb[gpio_bank(gpio)]->dir &= ~gpio_bit(gpio); gpio_bankb[gpio_bank(gpio)]->inen |= gpio_bit(gpio); + AWA_DUMMY_READ(inen); local_irq_restore(flags); } EXPORT_SYMBOL(gpio_direction_input); @@ -1102,6 +1138,7 @@ void gpio_direction_output(unsigned short gpio) local_irq_save(flags); gpio_bankb[gpio_bank(gpio)]->inen &= ~gpio_bit(gpio); gpio_bankb[gpio_bank(gpio)]->dir |= gpio_bit(gpio); + AWA_DUMMY_READ(dir); local_irq_restore(flags); } EXPORT_SYMBOL(gpio_direction_output); |