diff options
Diffstat (limited to 'drivers/input/keyboard')
-rw-r--r-- | drivers/input/keyboard/corgikbd.c | 104 |
1 files changed, 70 insertions, 34 deletions
diff --git a/drivers/input/keyboard/corgikbd.c b/drivers/input/keyboard/corgikbd.c index a8551711e8d6..cd4b6e795013 100644 --- a/drivers/input/keyboard/corgikbd.c +++ b/drivers/input/keyboard/corgikbd.c @@ -16,6 +16,7 @@ #include <linux/init.h> #include <linux/input.h> #include <linux/interrupt.h> +#include <linux/jiffies.h> #include <linux/module.h> #include <linux/slab.h> #include <asm/irq.h> @@ -32,7 +33,6 @@ /* zero code, 124 scancodes + 3 hinge combinations */ #define NR_SCANCODES ( SCANCODE(KB_ROWS-1,KB_COLS-1) +1 +1 +3 ) #define SCAN_INTERVAL (HZ/10) -#define CORGIKBD_PRESSED 1 #define HINGE_SCAN_INTERVAL (HZ/4) @@ -73,25 +73,13 @@ struct corgikbd { struct input_dev input; char phys[32]; - unsigned char state[ARRAY_SIZE(corgikbd_keycode)]; spinlock_t lock; - struct timer_list timer; struct timer_list htimer; -}; -static void handle_scancode(unsigned int pressed,unsigned int scancode, struct corgikbd *corgikbd_data) -{ - if (pressed && !(corgikbd_data->state[scancode] & CORGIKBD_PRESSED)) { - corgikbd_data->state[scancode] |= CORGIKBD_PRESSED; - input_report_key(&corgikbd_data->input, corgikbd_data->keycode[scancode], 1); - if (corgikbd_data->keycode[scancode] == CORGI_KEY_OFF) - input_event(&corgikbd_data->input, EV_PWR, CORGI_KEY_OFF, 1); - } else if (!pressed && corgikbd_data->state[scancode] & CORGIKBD_PRESSED) { - corgikbd_data->state[scancode] &= ~CORGIKBD_PRESSED; - input_report_key(&corgikbd_data->input, corgikbd_data->keycode[scancode], 0); - } -} + unsigned int suspended; + unsigned long suspend_jiffies; +}; #define KB_DISCHARGE_DELAY 10 #define KB_ACTIVATE_DELAY 10 @@ -105,36 +93,36 @@ static void handle_scancode(unsigned int pressed,unsigned int scancode, struct c */ static inline void corgikbd_discharge_all(void) { - // STROBE All HiZ + /* STROBE All HiZ */ GPCR2 = CORGI_GPIO_ALL_STROBE_BIT; GPDR2 &= ~CORGI_GPIO_ALL_STROBE_BIT; } static inline void corgikbd_activate_all(void) { - // STROBE ALL -> High + /* STROBE ALL -> High */ GPSR2 = CORGI_GPIO_ALL_STROBE_BIT; GPDR2 |= CORGI_GPIO_ALL_STROBE_BIT; udelay(KB_DISCHARGE_DELAY); - // Clear any interrupts we may have triggered when altering the GPIO lines + /* Clear any interrupts we may have triggered when altering the GPIO lines */ GEDR1 = CORGI_GPIO_HIGH_SENSE_BIT; GEDR2 = CORGI_GPIO_LOW_SENSE_BIT; } static inline void corgikbd_activate_col(int col) { - // STROBE col -> High, not col -> HiZ + /* STROBE col -> High, not col -> HiZ */ GPSR2 = CORGI_GPIO_STROBE_BIT(col); GPDR2 = (GPDR2 & ~CORGI_GPIO_ALL_STROBE_BIT) | CORGI_GPIO_STROBE_BIT(col); } static inline void corgikbd_reset_col(int col) { - // STROBE col -> Low + /* STROBE col -> Low */ GPCR2 = CORGI_GPIO_STROBE_BIT(col); - // STROBE col -> out, not col -> HiZ + /* STROBE col -> out, not col -> HiZ */ GPDR2 = (GPDR2 & ~CORGI_GPIO_ALL_STROBE_BIT) | CORGI_GPIO_STROBE_BIT(col); } @@ -149,10 +137,13 @@ static inline void corgikbd_reset_col(int col) /* Scan the hardware keyboard and push any changes up through the input layer */ static void corgikbd_scankeyboard(struct corgikbd *corgikbd_data, struct pt_regs *regs) { - unsigned int row, col, rowd, scancode; + unsigned int row, col, rowd; unsigned long flags; unsigned int num_pressed; + if (corgikbd_data->suspended) + return; + spin_lock_irqsave(&corgikbd_data->lock, flags); if (regs) @@ -173,10 +164,21 @@ static void corgikbd_scankeyboard(struct corgikbd *corgikbd_data, struct pt_regs rowd = GET_ROWS_STATUS(col); for (row = 0; row < KB_ROWS; row++) { + unsigned int scancode, pressed; + scancode = SCANCODE(row, col); - handle_scancode((rowd & KB_ROWMASK(row)), scancode, corgikbd_data); - if (rowd & KB_ROWMASK(row)) + pressed = rowd & KB_ROWMASK(row); + + input_report_key(&corgikbd_data->input, corgikbd_data->keycode[scancode], pressed); + + if (pressed) num_pressed++; + + if (pressed && (corgikbd_data->keycode[scancode] == CORGI_KEY_OFF) + && time_after(jiffies, corgikbd_data->suspend_jiffies + HZ)) { + input_event(&corgikbd_data->input, EV_PWR, CORGI_KEY_OFF, 1); + corgikbd_data->suspend_jiffies=jiffies; + } } corgikbd_reset_col(col); } @@ -221,8 +223,11 @@ static void corgikbd_timer_callback(unsigned long data) * The hinge switches generate no interrupt so they need to be * monitored by a timer. * - * When we detect changes, we debounce it and then pass the three - * positions the system can take as keypresses to the input system. + * We debounce the switches and pass them to the input system. + * + * gprr == 0x00 - Keyboard with Landscape Screen + * 0x08 - No Keyboard with Portrait Screen + * 0x0c - Keyboard and Screen Closed */ #define HINGE_STABLE_COUNT 2 @@ -235,7 +240,7 @@ static void corgikbd_hinge_timer(unsigned long data) unsigned long gprr; unsigned long flags; - gprr = read_scoop_reg(SCOOP_GPRR) & (CORGI_SCP_SWA | CORGI_SCP_SWB); + gprr = read_scoop_reg(&corgiscoop_device.dev, SCOOP_GPRR) & (CORGI_SCP_SWA | CORGI_SCP_SWB); if (gprr != sharpsl_hinge_state) { hinge_count = 0; sharpsl_hinge_state = gprr; @@ -244,9 +249,8 @@ static void corgikbd_hinge_timer(unsigned long data) if (hinge_count >= HINGE_STABLE_COUNT) { spin_lock_irqsave(&corgikbd_data->lock, flags); - handle_scancode((sharpsl_hinge_state == 0x00), 125, corgikbd_data); /* Keyboard with Landscape Screen */ - handle_scancode((sharpsl_hinge_state == 0x08), 126, corgikbd_data); /* No Keyboard with Portrait Screen */ - handle_scancode((sharpsl_hinge_state == 0x0c), 127, corgikbd_data); /* Keyboard and Screen Closed */ + input_report_switch(&corgikbd_data->input, SW_0, ((sharpsl_hinge_state & CORGI_SCP_SWA) != 0)); + input_report_switch(&corgikbd_data->input, SW_1, ((sharpsl_hinge_state & CORGI_SCP_SWB) != 0)); input_sync(&corgikbd_data->input); spin_unlock_irqrestore(&corgikbd_data->lock, flags); @@ -255,19 +259,45 @@ static void corgikbd_hinge_timer(unsigned long data) mod_timer(&corgikbd_data->htimer, jiffies + HINGE_SCAN_INTERVAL); } +#ifdef CONFIG_PM +static int corgikbd_suspend(struct device *dev, pm_message_t state, uint32_t level) +{ + if (level == SUSPEND_POWER_DOWN) { + struct corgikbd *corgikbd = dev_get_drvdata(dev); + corgikbd->suspended = 1; + } + return 0; +} + +static int corgikbd_resume(struct device *dev, uint32_t level) +{ + if (level == RESUME_POWER_ON) { + struct corgikbd *corgikbd = dev_get_drvdata(dev); + + /* Upon resume, ignore the suspend key for a short while */ + corgikbd->suspend_jiffies=jiffies; + corgikbd->suspended = 0; + } + return 0; +} +#else +#define corgikbd_suspend NULL +#define corgikbd_resume NULL +#endif + static int __init corgikbd_probe(struct device *dev) { int i; struct corgikbd *corgikbd; - corgikbd = kcalloc(1, sizeof(struct corgikbd), GFP_KERNEL); + corgikbd = kzalloc(sizeof(struct corgikbd), GFP_KERNEL); if (!corgikbd) return -ENOMEM; dev_set_drvdata(dev,corgikbd); strcpy(corgikbd->phys, "corgikbd/input0"); - spin_lock_init(corgikbd->lock); + spin_lock_init(&corgikbd->lock); /* Init Keyboard rescan timer */ init_timer(&corgikbd->timer); @@ -279,6 +309,8 @@ static int __init corgikbd_probe(struct device *dev) corgikbd->htimer.function = corgikbd_hinge_timer; corgikbd->htimer.data = (unsigned long) corgikbd; + corgikbd->suspend_jiffies=jiffies; + init_input_dev(&corgikbd->input); corgikbd->input.private = corgikbd; corgikbd->input.name = "Corgi Keyboard"; @@ -288,7 +320,7 @@ static int __init corgikbd_probe(struct device *dev) corgikbd->input.id.vendor = 0x0001; corgikbd->input.id.product = 0x0001; corgikbd->input.id.version = 0x0100; - corgikbd->input.evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_PWR); + corgikbd->input.evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_PWR) | BIT(EV_SW); corgikbd->input.keycode = corgikbd->keycode; corgikbd->input.keycodesize = sizeof(unsigned char); corgikbd->input.keycodemax = ARRAY_SIZE(corgikbd_keycode); @@ -297,6 +329,8 @@ static int __init corgikbd_probe(struct device *dev) for (i = 0; i < ARRAY_SIZE(corgikbd_keycode); i++) set_bit(corgikbd->keycode[i], corgikbd->input.keybit); clear_bit(0, corgikbd->input.keybit); + set_bit(SW_0, corgikbd->input.swbit); + set_bit(SW_1, corgikbd->input.swbit); input_register_device(&corgikbd->input); mod_timer(&corgikbd->htimer, jiffies + HINGE_SCAN_INTERVAL); @@ -343,6 +377,8 @@ static struct device_driver corgikbd_driver = { .bus = &platform_bus_type, .probe = corgikbd_probe, .remove = corgikbd_remove, + .suspend = corgikbd_suspend, + .resume = corgikbd_resume, }; static int __devinit corgikbd_init(void) |