As LoCoMo is switching to new device model, adapt keyboard driver to support new locomo core driver.
Signed-off-by: Dmitry Eremin-Solenikov <[email protected]> --- drivers/input/keyboard/Kconfig | 2 +- drivers/input/keyboard/locomokbd.c | 252 ++++++++++++++++++------------------- 2 files changed, 121 insertions(+), 133 deletions(-) diff --git a/drivers/input/keyboard/Kconfig b/drivers/input/keyboard/Kconfig index 106fbac..9a20487 100644 --- a/drivers/input/keyboard/Kconfig +++ b/drivers/input/keyboard/Kconfig @@ -337,7 +337,7 @@ config KEYBOARD_LM8333 config KEYBOARD_LOCOMO tristate "LoCoMo Keyboard Support" - depends on SHARP_LOCOMO + depends on MFD_LOCOMO help Say Y here if you are running Linux on a Sharp Zaurus Collie or Poodle based PDA diff --git a/drivers/input/keyboard/locomokbd.c b/drivers/input/keyboard/locomokbd.c index c94d610..9742c79 100644 --- a/drivers/input/keyboard/locomokbd.c +++ b/drivers/input/keyboard/locomokbd.c @@ -23,28 +23,25 @@ * */ -#include <linux/slab.h> -#include <linux/module.h> +#include <linux/delay.h> #include <linux/init.h> #include <linux/input.h> -#include <linux/delay.h> -#include <linux/device.h> #include <linux/interrupt.h> -#include <linux/ioport.h> - -#include <asm/hardware/locomo.h> -#include <asm/irq.h> - -MODULE_AUTHOR("John Lenz <[email protected]>"); -MODULE_DESCRIPTION("LoCoMo keyboard driver"); -MODULE_LICENSE("GPL"); - -#define LOCOMOKBD_NUMKEYS 128 +#include <linux/module.h> +#include <linux/platform_device.h> +#include <linux/regmap.h> +#include <linux/slab.h> +#include <linux/mfd/locomo.h> #define KEY_ACTIVITY KEY_F16 #define KEY_CONTACT KEY_F18 #define KEY_CENTER KEY_F15 +#define KB_ROWS 16 +#define KB_COLS 8 +#define LOCOMOKBD_NUMKEYS (KB_ROWS * KB_COLS) +#define SCANCODE(c, r) (((c)<<4) + (r) + 1) + static const unsigned char locomokbd_keycode[LOCOMOKBD_NUMKEYS] = { 0, KEY_ESC, KEY_ACTIVITY, 0, 0, 0, 0, 0, 0, 0, /* 0 - 9 */ @@ -62,20 +59,14 @@ locomokbd_keycode[LOCOMOKBD_NUMKEYS] = { KEY_M, KEY_SPACE, KEY_V, KEY_APOSTROPHE, KEY_SLASH, 0, 0, 0 /* 120 - 128 */ }; -#define KB_ROWS 16 -#define KB_COLS 8 -#define KB_ROWMASK(r) (1 << (r)) -#define SCANCODE(c,r) ( ((c)<<4) + (r) + 1 ) - #define KB_DELAY 8 -#define SCAN_INTERVAL (HZ/10) struct locomokbd { unsigned char keycode[LOCOMOKBD_NUMKEYS]; struct input_dev *input; - char phys[32]; - unsigned long base; + struct regmap *regmap; + int irq; spinlock_t lock; struct timer_list timer; @@ -84,37 +75,33 @@ struct locomokbd { }; /* helper functions for reading the keyboard matrix */ -static inline void locomokbd_charge_all(unsigned long membase) +static void locomokbd_charge_all(struct locomokbd *locomokbd) { - locomo_writel(0x00FF, membase + LOCOMO_KSC); + regmap_write(locomokbd->regmap, LOCOMO_KSC, 0x00ff); } -static inline void locomokbd_activate_all(unsigned long membase) +static void locomokbd_activate_all(struct locomokbd *locomokbd) { - unsigned long r; - - locomo_writel(0, membase + LOCOMO_KSC); - r = locomo_readl(membase + LOCOMO_KIC); - r &= 0xFEFF; - locomo_writel(r, membase + LOCOMO_KIC); + regmap_write(locomokbd->regmap, LOCOMO_KSC, 0); + regmap_update_bits(locomokbd->regmap, LOCOMO_KIC, 0x100, 0); } -static inline void locomokbd_activate_col(unsigned long membase, int col) +static void locomokbd_activate_col(struct locomokbd *locomokbd, int col) { unsigned short nset; unsigned short nbset; - nset = 0xFF & ~(1 << col); + nset = 0xFF & ~BIT(col); nbset = (nset << 8) + nset; - locomo_writel(nbset, membase + LOCOMO_KSC); + regmap_write(locomokbd->regmap, LOCOMO_KSC, nbset); } -static inline void locomokbd_reset_col(unsigned long membase, int col) +static void locomokbd_reset_col(struct locomokbd *locomokbd, int col) { unsigned short nbset; - nbset = ((0xFF & ~(1 << col)) << 8) + 0xFF; - locomo_writel(nbset, membase + LOCOMO_KSC); + nbset = ((0xFF & ~BIT(col)) << 8) + 0xFF; + regmap_write(locomokbd->regmap, LOCOMO_KSC, nbset); } /* @@ -129,24 +116,25 @@ static void locomokbd_scankeyboard(struct locomokbd *locomokbd) unsigned int row, col, rowd; unsigned long flags; unsigned int num_pressed; - unsigned long membase = locomokbd->base; + bool esc_pressed = false; spin_lock_irqsave(&locomokbd->lock, flags); - locomokbd_charge_all(membase); + locomokbd_charge_all(locomokbd); num_pressed = 0; for (col = 0; col < KB_COLS; col++) { - - locomokbd_activate_col(membase, col); + udelay(KB_DELAY); + locomokbd_activate_col(locomokbd, col); udelay(KB_DELAY); - rowd = ~locomo_readl(membase + LOCOMO_KIB); + regmap_read(locomokbd->regmap, LOCOMO_KIB, &rowd); + rowd = ~rowd; for (row = 0; row < KB_ROWS; row++) { unsigned int scancode, pressed, key; scancode = SCANCODE(col, row); - pressed = rowd & KB_ROWMASK(row); + pressed = rowd & BIT(row); key = locomokbd->keycode[scancode]; input_report_key(locomokbd->input, key, pressed); @@ -158,30 +146,32 @@ static void locomokbd_scankeyboard(struct locomokbd *locomokbd) /* The "Cancel/ESC" key is labeled "On/Off" on * Collie and Poodle and should suspend the device * if it was pressed for more than a second. */ - if (unlikely(key == KEY_ESC)) { - if (!time_after(jiffies, - locomokbd->suspend_jiffies + HZ)) - continue; - if (locomokbd->count_cancel++ - != (HZ/SCAN_INTERVAL + 1)) - continue; - input_event(locomokbd->input, EV_PWR, - KEY_SUSPEND, 1); - locomokbd->suspend_jiffies = jiffies; - } else - locomokbd->count_cancel = 0; + if (unlikely(key == KEY_ESC)) + esc_pressed = true; } - locomokbd_reset_col(membase, col); + locomokbd_reset_col(locomokbd, col); } - locomokbd_activate_all(membase); + locomokbd_activate_all(locomokbd); input_sync(locomokbd->input); /* if any keys are pressed, enable the timer */ if (num_pressed) - mod_timer(&locomokbd->timer, jiffies + SCAN_INTERVAL); + mod_timer(&locomokbd->timer, jiffies + msecs_to_jiffies(100)); else + regmap_update_bits(locomokbd->regmap, LOCOMO_KIC, 0x10, 0x10); + + + if (esc_pressed && time_after(jiffies, + locomokbd->suspend_jiffies + msecs_to_jiffies(1000))) { + if (locomokbd->count_cancel++ > 20) { + input_event(locomokbd->input, EV_PWR, + KEY_SUSPEND, 1); + locomokbd->suspend_jiffies = jiffies; + } + } else { locomokbd->count_cancel = 0; + } spin_unlock_irqrestore(&locomokbd->lock, flags); } @@ -192,18 +182,17 @@ static void locomokbd_scankeyboard(struct locomokbd *locomokbd) static irqreturn_t locomokbd_interrupt(int irq, void *dev_id) { struct locomokbd *locomokbd = dev_id; - u16 r; + unsigned int r; - r = locomo_readl(locomokbd->base + LOCOMO_KIC); + regmap_read(locomokbd->regmap, LOCOMO_KIC, &r); if ((r & 0x0001) == 0) return IRQ_HANDLED; - locomo_writel(r & ~0x0100, locomokbd->base + LOCOMO_KIC); /* Ack */ + /* Mask and Ack */ + regmap_write(locomokbd->regmap, LOCOMO_KIC, r & ~0x110); - /** wait chattering delay **/ - udelay(100); + mod_timer(&locomokbd->timer, jiffies + msecs_to_jiffies(1)); - locomokbd_scankeyboard(locomokbd); return IRQ_HANDLED; } @@ -220,47 +209,39 @@ static void locomokbd_timer_callback(unsigned long data) static int locomokbd_open(struct input_dev *dev) { struct locomokbd *locomokbd = input_get_drvdata(dev); - u16 r; - - r = locomo_readl(locomokbd->base + LOCOMO_KIC) | 0x0010; - locomo_writel(r, locomokbd->base + LOCOMO_KIC); - return 0; + + return regmap_update_bits(locomokbd->regmap, LOCOMO_KIC, 0x10, 0x10); } static void locomokbd_close(struct input_dev *dev) { struct locomokbd *locomokbd = input_get_drvdata(dev); - u16 r; - - r = locomo_readl(locomokbd->base + LOCOMO_KIC) & ~0x0010; - locomo_writel(r, locomokbd->base + LOCOMO_KIC); + + regmap_update_bits(locomokbd->regmap, LOCOMO_KIC, 0x10, 0x0); + + del_timer_sync(&locomokbd->timer); } -static int locomokbd_probe(struct locomo_dev *dev) +static int locomokbd_probe(struct platform_device *dev) { struct locomokbd *locomokbd; struct input_dev *input_dev; int i, err; - locomokbd = kzalloc(sizeof(struct locomokbd), GFP_KERNEL); - input_dev = input_allocate_device(); - if (!locomokbd || !input_dev) { - err = -ENOMEM; - goto err_free_mem; - } + locomokbd = devm_kzalloc(&dev->dev, sizeof(struct locomokbd), + GFP_KERNEL); + if (!locomokbd) + return -ENOMEM; - /* try and claim memory region */ - if (!request_mem_region((unsigned long) dev->mapbase, - dev->length, - LOCOMO_DRIVER_NAME(dev))) { - err = -EBUSY; - printk(KERN_ERR "locomokbd: Can't acquire access to io memory for keyboard\n"); - goto err_free_mem; - } + locomokbd->regmap = dev_get_regmap(dev->dev.parent, NULL); + if (!locomokbd->regmap) + return -EINVAL; - locomo_set_drvdata(dev, locomokbd); + locomokbd->irq = platform_get_irq(dev, 0); + if (locomokbd->irq < 0) + return -ENXIO; - locomokbd->base = (unsigned long) dev->mapbase; + platform_set_drvdata(dev, locomokbd); spin_lock_init(&locomokbd->lock); @@ -270,11 +251,13 @@ static int locomokbd_probe(struct locomo_dev *dev) locomokbd->suspend_jiffies = jiffies; - locomokbd->input = input_dev; - strcpy(locomokbd->phys, "locomokbd/input0"); + input_dev = devm_input_allocate_device(&dev->dev); + if (!input_dev) + return -ENOMEM; + locomokbd->input = input_dev; input_dev->name = "LoCoMo keyboard"; - input_dev->phys = locomokbd->phys; + input_dev->phys = "locomokbd/input0"; input_dev->id.bustype = BUS_HOST; input_dev->id.vendor = 0x0001; input_dev->id.product = 0x0001; @@ -291,72 +274,77 @@ static int locomokbd_probe(struct locomo_dev *dev) input_set_drvdata(input_dev, locomokbd); - memcpy(locomokbd->keycode, locomokbd_keycode, sizeof(locomokbd->keycode)); + memcpy(locomokbd->keycode, + locomokbd_keycode, + sizeof(locomokbd->keycode)); + for (i = 0; i < LOCOMOKBD_NUMKEYS; i++) - set_bit(locomokbd->keycode[i], input_dev->keybit); - clear_bit(0, input_dev->keybit); + input_set_capability(input_dev, EV_KEY, locomokbd->keycode[i]); + input_set_capability(input_dev, EV_PWR, KEY_SUSPEND); + __set_bit(EV_REP, input_dev->evbit); + + regmap_write(locomokbd->regmap, LOCOMO_KCMD, 1); + regmap_write(locomokbd->regmap, LOCOMO_KSC, 0x0); + regmap_write(locomokbd->regmap, LOCOMO_KIC, 0x0); /* attempt to get the interrupt */ - err = request_irq(dev->irq[0], locomokbd_interrupt, 0, "locomokbd", locomokbd); + err = devm_request_irq(&dev->dev, locomokbd->irq, locomokbd_interrupt, + 0, "locomokbd", locomokbd); if (err) { - printk(KERN_ERR "locomokbd: Can't get irq for keyboard\n"); - goto err_release_region; + dev_err(&dev->dev, "Could not get keyboard IRQ\n"); + return err; } err = input_register_device(locomokbd->input); if (err) - goto err_free_irq; + return err; return 0; - err_free_irq: - free_irq(dev->irq[0], locomokbd); - err_release_region: - release_mem_region((unsigned long) dev->mapbase, dev->length); - locomo_set_drvdata(dev, NULL); - err_free_mem: - input_free_device(input_dev); - kfree(locomokbd); - return err; } -static int locomokbd_remove(struct locomo_dev *dev) +static int __maybe_unused locomokbd_suspend(struct device *dev) { - struct locomokbd *locomokbd = locomo_get_drvdata(dev); + struct locomokbd *locomokbd = dev_get_drvdata(dev); - free_irq(dev->irq[0], locomokbd); + regmap_update_bits(locomokbd->regmap, LOCOMO_KIC, 0x10, 0x0); del_timer_sync(&locomokbd->timer); - input_unregister_device(locomokbd->input); - locomo_set_drvdata(dev, NULL); + return 0; +} + +static int __maybe_unused locomokbd_resume(struct device *dev) +{ + struct locomokbd *locomokbd = dev_get_drvdata(dev); - release_mem_region((unsigned long) dev->mapbase, dev->length); + regmap_write(locomokbd->regmap, LOCOMO_KCMD, 1); + regmap_write(locomokbd->regmap, LOCOMO_KSC, 0); + regmap_write(locomokbd->regmap, LOCOMO_KIC, 0x0); - kfree(locomokbd); + /* Rescan keyboard only if we are open by somebody */ + mutex_lock(&locomokbd->input->mutex); + if (locomokbd->input->users) + locomokbd_scankeyboard(locomokbd); + mutex_unlock(&locomokbd->input->mutex); return 0; } -static struct locomo_driver keyboard_driver = { - .drv = { - .name = "locomokbd" +static SIMPLE_DEV_PM_OPS(locomo_kbd_pm, locomokbd_suspend, locomokbd_resume); + +static struct platform_driver locomokbd_driver = { + .driver = { + .name = "locomo-kbd", + .pm = &locomo_kbd_pm, }, - .devid = LOCOMO_DEVID_KEYBOARD, .probe = locomokbd_probe, - .remove = locomokbd_remove, }; -static int __init locomokbd_init(void) -{ - return locomo_driver_register(&keyboard_driver); -} +module_platform_driver(locomokbd_driver); -static void __exit locomokbd_exit(void) -{ - locomo_driver_unregister(&keyboard_driver); -} - -module_init(locomokbd_init); -module_exit(locomokbd_exit); +MODULE_AUTHOR("John Lenz <[email protected]>"); +MODULE_DESCRIPTION("LoCoMo keyboard driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:locomo-kbd"); -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-input" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
