X-Git-Url: http://cvs.zerfleddert.de/cgi-bin/gitweb.cgi/ms2-fixes/blobdiff_plain/60fe4255a1179811f8c49a65a1f34a15d978e17b..126529c5b9a099c6ce08f3557e6aa3f57a4e75dc:/debounce.c diff --git a/debounce.c b/debounce.c index f06cf22..b69e1bc 100644 --- a/debounce.c +++ b/debounce.c @@ -5,17 +5,57 @@ #include #include #include +#include +#include +#include #define PREFIX "debounce: " +#define PADCONF_PULL_UP ( OMAP343X_PADCONF_OFF_WAKEUP_ENABLED | \ + OMAP343X_PADCONF_INPUT_ENABLED | \ + OMAP343X_PADCONF_PULL_UP | \ + OMAP343X_PADCONF_PUD_ENABLED | \ + OMAP343X_PADCONF_MUXMODE4 ) + +#define PADCONF_PULL_DOWN ( OMAP343X_PADCONF_OFF_WAKEUP_ENABLED | \ + OMAP343X_PADCONF_INPUT_ENABLED | \ + OMAP343X_PADCONF_PULL_DOWN | \ + OMAP343X_PADCONF_PUD_ENABLED | \ + OMAP343X_PADCONF_MUXMODE4 ) + +#define OMAP_CTRL_REGADDR(reg) (OMAP2_L4_IO_ADDRESS(OMAP343X_CTRL_BASE) + (reg)) + static unsigned old_flags = 0; static ktime_t old_debounce_delay; static ktime_t old_settle_time; static ktime_t old_poll_time; +static int (*old_sw_fixup)(int index); static struct gpio_event_matrix_info *gpio_evmi = NULL; static int hw_debounce = 0; static int hw_debounce_time = 0; +struct gpio_event { + struct gpio_event_input_devs *input_devs; + const struct gpio_event_platform_data *info; + struct early_suspend early_suspend; + void *state[0]; +}; + +struct gpio_kp { + struct gpio_event_input_devs *input_devs; + struct gpio_event_matrix_info *keypad_info; + struct hrtimer timer; + struct wake_lock wake_lock; + int current_output; + unsigned int use_irq:1; + unsigned int key_state_changed:1; + unsigned int last_key_state_changed:1; + unsigned int some_keys_pressed:2; + unsigned long keys_pressed[0]; +}; + +static struct gpio_kp *gpio_kp_state = NULL; + static int find_ms2_dev(struct device *dev, void *data) { if (!strncmp((char*)data, dev_name(dev), strlen((char*)data))) { @@ -335,6 +375,7 @@ static ssize_t show_active_high_flag(struct device *dev, struct device_attribute static ssize_t store_active_high_flag(struct device *dev, struct device_attribute *attr, const char *buf, size_t count) { unsigned flag; + int i; if (!gpio_evmi) return -ENODEV; @@ -343,8 +384,14 @@ static ssize_t store_active_high_flag(struct device *dev, struct device_attribut if (flag) { gpio_evmi->flags |= GPIOKPF_ACTIVE_HIGH; + for (i = 0x7a; i <= 0x88; i += 2) { + __raw_writew(PADCONF_PULL_DOWN, OMAP_CTRL_REGADDR(i)); + } } else { gpio_evmi->flags &= ~GPIOKPF_ACTIVE_HIGH; + for (i = 0x7a; i <= 0x88; i += 2) { + __raw_writew(PADCONF_PULL_UP, OMAP_CTRL_REGADDR(i)); + } } set_irq_types(); @@ -469,6 +516,24 @@ static DEVICE_ATTR(drive_inactive_flag, (S_IRUGO | S_IWUGO), show_drive_inactive static DEVICE_ATTR(hw_debounce, (S_IRUGO | S_IWUGO), show_hw_debounce, store_hw_debounce); static DEVICE_ATTR(hw_debounce_time, (S_IRUGO | S_IWUGO), show_hw_debounce_time, store_hw_debounce_time); +#if 0 +static int debounce_fixup(int index) +{ + int ret; + + printk(KERN_INFO PREFIX "key_state_changed: %d, last_key_state_changed: %d, some_keys_pressed: %d\n", + gpio_kp_state->key_state_changed, + gpio_kp_state->last_key_state_changed, + gpio_kp_state->some_keys_pressed); + + ret = old_sw_fixup(index); + if (!ret) + printk(KERN_INFO PREFIX "Index 0x%x ignored!\n", index); + + return ret; +} +#endif + static void debounce_release(struct device *dev) { } @@ -481,16 +546,23 @@ static struct device debounce_device = { static int __init debounce_init(void) { struct device *event_dev = NULL; + struct platform_device *pdev = NULL; struct gpio_event_platform_data *gpio_epd; struct gpio_event_info *gpio_ei; + struct gpio_event *gpio_e; int err = 0; + int i; printk(KERN_INFO PREFIX "Searching for " GPIO_EVENT_DEV_NAME "...\n"); event_dev = device_find_child(&platform_bus, GPIO_EVENT_DEV_NAME, find_ms2_dev); if (event_dev == NULL) return -ENODEV; - + + pdev = container_of(event_dev, struct platform_device, dev); + if (pdev == NULL) + return -ENODEV; + gpio_epd = (struct gpio_event_platform_data*)event_dev->platform_data; printk(KERN_INFO PREFIX "And there is a %s connected...\n", gpio_epd->name); if (strcmp(gpio_epd->name, "sholes-keypad")) @@ -499,6 +571,29 @@ static int __init debounce_init(void) gpio_ei = (struct gpio_event_info*)gpio_epd->info[0]; gpio_evmi = container_of(gpio_ei, struct gpio_event_matrix_info, info); + gpio_e = platform_get_drvdata(pdev); + printk(KERN_INFO PREFIX "Number of states: %d\n", gpio_e->info->info_count); + + /* Search for correct gpio_event state */ + for (i = 0; i < gpio_e->info->info_count; i++) { + if (gpio_e->info->info[i]->func == gpio_ei->func) { + printk(KERN_INFO PREFIX "Keypad state: %d\n", i); + gpio_kp_state = gpio_e->state[i]; + } + } + + if (!gpio_kp_state) { + printk(KERN_ERR PREFIX "Can't determine correct keypad state!\n"); + return -ENODEV; + } + + printk(KERN_INFO PREFIX "kp_use_irq: %d\n", gpio_kp_state->use_irq); +#if 0 + gpio_kp_state->use_irq=0; + hrtimer_start(&(gpio_kp_state->timer), gpio_evmi->poll_time, HRTIMER_MODE_REL); + printk(KERN_INFO PREFIX "kp_use_irq: %d\n", gpio_kp_state->use_irq); +#endif + err = device_register(&debounce_device); if (err) { return err; @@ -528,14 +623,20 @@ static int __init debounce_init(void) old_settle_time = gpio_evmi->settle_time; old_poll_time = gpio_evmi->poll_time; old_flags = gpio_evmi->flags; + old_sw_fixup = gpio_evmi->sw_fixup; - printk(KERN_INFO PREFIX "flags: 0x%x\n", gpio_evmi->flags); +#if 0 + printk(KERN_INFO PREFIX "Registering fixup handler\n"); + gpio_evmi->sw_fixup = debounce_fixup; +#endif return 0; } static void __exit debounce_exit(void) { + int i; + if (gpio_evmi) { if (gpio_evmi->debounce_delay.tv.nsec != old_debounce_delay.tv.nsec) { printk(KERN_INFO PREFIX "Restoring debounce_delay\n"); @@ -546,10 +647,24 @@ static void __exit debounce_exit(void) printk(KERN_INFO PREFIX "Restoring flags\n"); gpio_evmi->flags = old_flags; printk(KERN_INFO PREFIX "flags: 0x%x\n", gpio_evmi->flags); + if (gpio_evmi->flags & GPIOKPF_ACTIVE_HIGH) { + for (i = 0x7a; i <= 0x88; i += 2) { + __raw_writew(PADCONF_PULL_DOWN, OMAP_CTRL_REGADDR(i)); + } + } else { + for (i = 0x7a; i <= 0x88; i += 2) { + __raw_writew(PADCONF_PULL_UP, OMAP_CTRL_REGADDR(i)); + } + } set_irq_types(); } gpio_evmi->settle_time = old_settle_time; gpio_evmi->poll_time = old_poll_time; + + if (gpio_evmi->sw_fixup != old_sw_fixup) { + printk(KERN_INFO PREFIX "Restoring fixup handler\n"); + gpio_evmi->sw_fixup = old_sw_fixup; + } } hw_debounce_set(0, 0); device_remove_file(&debounce_device, &dev_attr_debounce_delay);