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git://projects.qi-hardware.com/openwrt-xburst.git
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[adm5120] add support for GPIO IRQs
git-svn-id: svn://svn.openwrt.org/openwrt/trunk@9700 3c298f89-4303-0410-b956-a3cf2f4a3e73
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@ -83,6 +83,8 @@ static int __init adm5120_board_setup(void)
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memcpy(&adm5120_board_name, board->name, ADM5120_BOARD_NAMELEN);
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adm5120_gpio_init();
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adm5120_board_reset = board->board_reset;
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if (board->eth_num_ports > 0)
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adm5120_eth_num_ports = board->eth_num_ports;
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@ -37,7 +37,7 @@
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#include <adm5120_defs.h>
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#include <adm5120_info.h>
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#include <adm5120_switch.h>
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#include <adm5120_irq.h>
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#define GPIO_READ(r) readl((r))
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#define GPIO_WRITE(v, r) writel((v), (r))
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@ -46,6 +46,7 @@
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struct adm5120_gpio_line {
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u32 flags;
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const char *label;
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int irq;
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};
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#define GPIO_FLAG_VALID 0x01
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@ -71,36 +72,25 @@ static struct led_desc led_table[15] = {
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LED_DESC(4, 0), LED_DESC(4, 1), LED_DESC(4, 2)
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};
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static struct adm5120_gpio_line adm5120_gpio_map[ADM5120_GPIO_COUNT] = {
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[ADM5120_GPIO_PIN0] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_PIN1] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_PIN2] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_PIN3] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_PIN4] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_PIN5] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_PIN6] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_PIN7] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P0L0] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P0L1] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P0L2] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P1L0] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P1L1] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P1L2] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P2L0] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P2L1] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P2L2] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P3L0] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P3L1] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P3L2] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P4L0] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P4L1] = {.flags = GPIO_FLAG_VALID},
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[ADM5120_GPIO_P4L2] = {.flags = GPIO_FLAG_VALID}
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};
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static struct adm5120_gpio_line adm5120_gpio_map[ADM5120_GPIO_COUNT];
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#define gpio_is_invalid(g) ((g) > ADM5120_GPIO_MAX || \
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((adm5120_gpio_map[(g)].flags & GPIO_FLAG_VALID) == 0))
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/*-------------------------------------------------------------------------*/
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#define gpio_is_used(g) ((adm5120_gpio_map[(g)].flags & GPIO_FLAG_USED) != 0)
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static inline int gpio_is_invalid(unsigned gpio)
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{
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if ((gpio > ADM5120_GPIO_MAX) ||
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(adm5120_gpio_map[gpio].flags & GPIO_FLAG_VALID) == 0);
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return 0;
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return 1;
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}
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static inline int gpio_is_used(unsigned gpio)
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{
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return ((adm5120_gpio_map[gpio].flags & GPIO_FLAG_USED) != 0);
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}
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/*-------------------------------------------------------------------------*/
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/*
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* Helpers for GPIO lines in GPIO_CONF0 register
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@ -247,6 +237,8 @@ static inline int leds_get_value(unsigned led)
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return 1;
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}
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/*-------------------------------------------------------------------------*/
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/*
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* Main GPIO support routines
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*/
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@ -325,29 +317,74 @@ EXPORT_SYMBOL(adm5120_gpio_free);
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int adm5120_gpio_to_irq(unsigned gpio)
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{
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/* FIXME: not yet implemented */
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return -EINVAL;
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if (gpio > ADM5120_GPIO_MAX)
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return -EINVAL;
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return adm5120_gpio_map[gpio].irq;
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}
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EXPORT_SYMBOL(adm5120_gpio_to_irq);
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int adm5120_irq_to_gpio(unsigned irq)
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{
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/* FIXME: not yet implemented */
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int i;
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for (i = 0; i < ADM5120_GPIO_COUNT; i++)
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if (adm5120_gpio_map[i].irq == irq)
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return i;
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return -EINVAL;
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}
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EXPORT_SYMBOL(adm5120_irq_to_gpio);
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static int __init adm5120_gpio_init(void)
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/*-------------------------------------------------------------------------*/
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void __init adm5120_gpio_csx0_enable(void)
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{
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u32 t;
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t = SW_READ_REG(GPIO_CONF2);
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t |= GPIO_CONF2_CSX0;
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SW_WRITE_REG(GPIO_CONF2, t);
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adm5120_gpio_map[ADM5120_GPIO_PIN1].flags &= ~GPIO_FLAG_VALID;
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adm5120_gpio_map[ADM5120_GPIO_PIN2].irq = ADM5120_IRQ_GPIO2;
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}
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void __init adm5120_gpio_csx1_enable(void)
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{
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u32 t;
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t = SW_READ_REG(GPIO_CONF2);
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t |= GPIO_CONF2_CSX1;
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SW_WRITE_REG(GPIO_CONF2, t);
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adm5120_gpio_map[ADM5120_GPIO_PIN3].flags &= ~GPIO_FLAG_VALID;
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if (adm5120_package_bga())
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adm5120_gpio_map[ADM5120_GPIO_PIN4].irq = ADM5120_IRQ_GPIO4;
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}
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void __init adm5120_gpio_ew_enable(void)
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{
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u32 t;
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t = SW_READ_REG(GPIO_CONF2);
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t |= GPIO_CONF2_EW;
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SW_WRITE_REG(GPIO_CONF2, t);
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}
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void __init adm5120_gpio_init(void)
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{
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int i;
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SW_WRITE_REG(GPIO_CONF2, 0);
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for (i = 0; i < ADM5120_GPIO_COUNT; i++)
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adm5120_gpio_map[i].flags = GPIO_FLAG_VALID;
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if (adm5120_package_pqfp()) {
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/* GPIO pins 4-7 are unavailable in ADM5120P */
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for (i = ADM5120_GPIO_PIN4; i <= ADM5120_GPIO_PIN7; i++)
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adm5120_gpio_map[i].flags &= ~GPIO_FLAG_VALID;
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adm5120_gpio_map[ADM5120_GPIO_PIN4].flags &= ~GPIO_FLAG_VALID;
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adm5120_gpio_map[ADM5120_GPIO_PIN5].flags &= ~GPIO_FLAG_VALID;
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adm5120_gpio_map[ADM5120_GPIO_PIN6].flags &= ~GPIO_FLAG_VALID;
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adm5120_gpio_map[ADM5120_GPIO_PIN7].flags &= ~GPIO_FLAG_VALID;
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}
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return 0;
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}
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pure_initcall(adm5120_gpio_init);
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@ -76,7 +76,7 @@ static void adm5120_intc_irq_mask(unsigned int irq)
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static int adm5120_intc_irq_set_type(unsigned int irq, unsigned int flow_type)
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{
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/* TODO: not yet tested */
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#if 1
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unsigned int sense;
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unsigned long mode;
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int err = 0;
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@ -114,13 +114,13 @@ static int adm5120_intc_irq_set_type(unsigned int irq, unsigned int flow_type)
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mode &= (1 << (irq-ADM5120_INTC_IRQ_BASE));
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INTC_WRITE(INTC_REG_INT_MODE, mode);
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/* fallthrogh */
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/* fallthrough */
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default:
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irq_desc[irq].status &= ~IRQ_TYPE_SENSE_MASK;
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irq_desc[irq].status |= sense;
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break;
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}
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#endif
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return 0;
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}
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@ -161,10 +161,13 @@ static void __init adm5120_intc_irq_init(int base)
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/* disable all interrupts */
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INTC_WRITE(INTC_REG_IRQ_DISABLE, INTC_INT_ALL);
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/* setup all interrupts to generate IRQ instead of FIQ */
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INTC_WRITE(INTC_REG_INT_MODE, 0);
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/* set active level for all external interrupts to HIGH */
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INTC_WRITE(INTC_REG_INT_LEVEL, 0);
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/* disable usage of the TEST_SOURCE register */
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INTC_WRITE(INTC_REG_IRQ_SOURCE_SELECT, 0);
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@ -68,6 +68,11 @@ extern void adm5120_halt(void);
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extern void (*adm5120_board_reset)(void);
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extern void adm5120_gpio_init(void) __init;
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extern void adm5120_gpio_csx0_enable(void) __init;
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extern void adm5120_gpio_csx1_enable(void) __init;
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extern void adm5120_gpio_ew_enable(void) __init;
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static inline int adm5120_package_pqfp(void)
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{
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return (adm5120_package == ADM5120_PACKAGE_PQFP);
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@ -247,6 +247,11 @@
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#define GPIO_CONF0_OE_MASK (0xFF << GPIO_CONF0_OE_SHIFT)
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#define GPIO_CONF0_OV_MASK (0xFF << GPIO_CONF0_OV_SHIFT)
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/* GPIO_CONF2 register bits */
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#define GPIO_CONF2_CSX0 BIT(4) /* enable CSX0:INTX0 on GPIO 1:2 */
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#define GPIO_CONF2_CSX1 BIT(5) /* enable CSX1:INTX1 on GPIO 3:4 */
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#define GPIO_CONF2_EW BIT(6) /* enable wait state pin for CSX0/1 */
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/* INT_STATUS/INT_MASK register bits */
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#define SWITCH_INT_SHD BIT(0) /* Send High Done */
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#define SWITCH_INT_SLD BIT(1) /* Send Low Done */
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